US20100154613A1 - Label that is Removable or Having a Removable Section - Google Patents

Abstract

A perforating apparatus for perforating a sheet. The apparatus includes a plurality of perforating assemblies. Each perforating assembly includes a perforating wheel, which is operatively coupled to a pneumatic cylinder, and a plurality of air hoses, wherein each pneumatic cylinder of each perforating assembly is operatively coupled to, and in flow communication with one air hose of the plurality of air hoses. Further each pneumatic cylinder is associated with an air muffler. And the apparatus includes a secondary roller that includes a peripheral wrap around the outer surface thereof.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS
• This application claims the benefit of the filing date of U.S. Patent Application Ser. No. 61/139,283, entitled “Label that is Removable or Having a Removable Section,” filed on Dec. 19, 2008, the disclosure of which is incorporated by reference herein in its entirety.
FIELD OF THE INVENTION
• The present invention relates generally to labels that are associated with various articles, and relates more specifically to a label that is removable from the article with which it is associated, or has a section that is removable from the article with which the label is associated.
BACKGROUND
• This section is intended to introduce the reader to various aspects of art that may be related to various aspects of the present invention, which are described and/or claimed below. This discussion is believed to be helpful in providing the reader with background information to facilitate a better understanding of various aspects of the present invention. Accordingly, it should be understood that these statements are to be read in this light, and not as admissions of prior art.
• Articles, such as containers, are prevalent in a wide variety of shapes and sizes for holding many different kinds of materials such as cosmetics, cleaning supplies, foodstuffs, beverages, light duty liquids, heavy duty liquids, etc. Such articles may be fabricated from plastic (e.g., polypropylene, polyethylene, and polyesters), glass, paperboard, cardboard, or other materials.
• Regardless of the material, such articles are often provided with a label thereon, having text, logos, graphics, decorations, and/or other indicia that provide a consumer with information about the article and its contents. For example, this label information may include the trade name of the product, the producer of the product, ingredients, price, and/or other such information. In some instances, the label is associated with a surface of the article by means of an adhesive or the like. For example, one such type of label is a pressure-sensitive label. As is known to those skilled in the art, a pressure-sensitive label generally includes a substrate having indicia providing label information printed on one side thereof, and a pressure-sensitive adhesive applied on the opposite side thereof. The pressure-sensitive adhesive forms a bond between the label and an article when pressure is applied in order to adhere the label to the article.
• The label information described above is generally situated on the label such that it is visible to a consumer when the label is associated with an article. However, in addition to the label information described above, certain labels may also include other information (in the form of text, logos, graphics, decorations, and/or other indicia), which may not be visible to the consumer when the label, or a section thereof, is associated with the article. Game-type information is an example of this sort of information. Game-type information may be included on the back side of the label (i.e., the nonvisible side). Another exemplary type of information that may be printed on the back side of a label includes coupon-type information. In order to be viewed, the label, or a section thereof, may be removed from the article, thereby exposing the game-type, coupon-type, or other type of information. Thus, it is desirable that the label, or a section of the label, be removable. This allows any game-type information to be revealed and any winning game piece (i.e., removable section or removable label) to be redeemed. It also allows for any coupon to be removed and retained by the retailer, or saved by the consumer for later use.
• Labels that are removable from an article, or have removable sections, are known. However, these labels exhibit several drawbacks. For example, these known labels often include two substrates (with the first substrate affixed to an article, and a second substrate—the removable substrate—overlying and affixed to the first substrate). More specifically, in these labels, the second substrate may have indicia on its back side, and the back side is adhered to the first substrate. The back side of the first substrate is then affixed to an article to be labeled through the use of adhesives. The first substrate is applied to the article with greater force of adhesion (i.e., a stronger bond) than the force of adhesion of the second substrate to the first substrate. Thus, the second substrate can be removed from the first substrate while the first substrate remains adhered to the article. However, the use of two substrates increases the bulk of the label. This results in increases in materials used, with attendant increases in cost to prepare and ship the labels. Further, multiple adhesives of differing strengths must be used, further increasing the materials and cost, and increasing the time, calculation, and design that must go into the label. Further, the use of a first adhesive to bond the second substrate to the first substrate results in a second substrate that may not be easily removable from the first substrate, and may tear, thereby damaging the indicia.
• As another drawback, prior labels having indicia printed on the back side of the second substrate have had difficulty in retaining the ink of that indicia on the back side of the second substrate during removal. For example, the adhesive of these labels can split during removal, leaving adhesive on both surfaces (i.e., first and second substrates). Moreover, the bond of the adhesive may become greater on aging than the strength of the substrate, resulting in tearing of the substrate on attempting to peel the label or a section thereof. This results in tearing of one or both of the substrates, and often results in the transfer of indicia from one surface to another, which removes indicia from one substrate and adheres it, in an unwanted fashion, to the other substrate. This destroys the usefulness of any game piece or coupon or other information.
• Further, the very use of an adhesive on the removable label or removable section thereof (whether in a flood application or patterned application) can increase the difficulty in removing the label or removable section thereof from a secondary substrate, or article. This also can result in tearing or destruction of any coupon or game piece.
• Further, even when a section of a label is designed to be removable (such as by including a release layer), the adhesives used for the remainder of a label (such as the standard adhesives used on labels for beer bottles), create a strong enough bond that the removable section also becomes bonded, thereby destroying its function. For example, some labels having a removable section may include a release coating over at least the removable section. However, before that label is placed onto an article or other substrate, the back side of the label is exposed to a roller, which floodcoats an adhesive onto the back side of the label, and thus over any release coating. In these labels, it is hoped that the release coating will continue to allow removal of the section, even in view of the presence of the adhesive. However, the adhesives are generally stronger than the release coating and create a bond between the article and the removable section, even in the presence of a release coating. This results in a removable section exhibiting the same drawbacks described above (e.g., a section that cannot be removed, that tears, that doesn't retain ink, etc.).
• Further still, any label including a removable section may include perforations to define the removable section, and facilitate removal of the section from the remainder of the substrate. In general, perforations are made by methods well known to those of ordinary skill in the art. For example, in one general method, an infeed roller directs a web of labels into a perforation apparatus, and a draw roller, disposed generally “downstream” from the infeed roller, pulls the web of labels through the perforation apparatus. Positioned between the infeed and draw rollers are one or more perforating wheels. The outer circumferential surface of each perforating wheel is provided with a plurality of “knives.” Proximal to the perforating wheel or wheels is a secondary roller. A roller gap is thus formed between the perforating wheels and the secondary roller. The web of labels is stretched taut over the secondary roller and passes through this roller gap. The “knives” of the perforating wheels puncture or indent the web of labels as it passes, and the desired depth of the perforations can be controlled by controlling the pressure of the perforating wheel against the web of labels and secondary roller. For example, such pressure may be set using air pressure provided by a pneumatic cylinder.
• However, there are drawbacks to these perforating apparatus that result in inconsistent perforations of poor quality. For example, the position of the perforating wheels relative to the secondary roller may be mechanically adjusted, but it is difficult to ensure that the pressure of the perforating wheels is constant during operation of the apparatus. Generally, a single air source provides the air for the pressure that is used for all of the perforating wheels in a perforating apparatus. Due to blockages that may arise within the system, the pressure may not be constant for each perforating wheel. Further, the wheels, pneumatic cylinders, or attachment of those two components may be different (due to different age, for example). Thus, the single air source may result in differing pressures in different perforating wheels. This leads to inconsistent perforations across a particular web of labels.
• Further, during operation of a perforating apparatus, the pressure within the pneumatic cylinder itself may not be held constant. For example, variances in the operation of the apparatus may cause the pressure to fluctuate (i.e., increase or decrease) relative to the desired set pressure. All of the above can cause inconsistencies in perforations along each single line of perforations.
• Further, in the perforating apparatus, the outer surface of the secondary roller is hard, as the rollers are generally made of a hard substance, such as steel. As described above, during a perforating operation, the web of labels moves against this hard surface as the “knives” of the perforating wheels puncture the labels. However, the hard surface of the secondary roller does not provide any “give,” such that the knives may be stopped by the hard surface from puncturing the labels to the desired depth.
• Any difference in pressure between the perforating wheels or within the pneumatic cylinder alters the depth, consistency, and quality of the perforations formed in the labels. This leads to labels with areas that are prematurely separated from the remainder of the label, labels that do not have a removable section at all (when they should), or labels with poorly functioning perforations (such that any attempted removal may tear the label where not intended).
SUMMARY
• Certain exemplary aspects of the invention are set forth below. It should be understood that these aspects are presented merely to provide the reader with a brief summary of certain forms the invention might take and that these aspects are not intended to limit the scope of the invention. Indeed, the invention may encompass a variety of aspects that may not be explicitly set forth below.
• The various exemplary aspects of the present invention, described below, overcome the drawbacks in present removable labels, and labels having a removable section, described in the Background. For example, one aspect provides a label that includes a single substrate that is removable from the article with which it is associated, or includes a removable section thereof, thereby eliminating excess layers, adhesives, etc., and lowering costs of the label.
• Another aspect of the present invention provides a removable label, or a label including a removable section, which does not result tearing, splitting, or damage to the removed portion or transfer of any indicia from the back side of the substrate to any other surface. In one particular embodiment, the label includes a substrate having a front side and a back side, and an ink disposed on the back side of the substrate, wherein the formulation of the ink includes components chosen from nitrocellulose resin, maleic resin, rosin ester resin, phosphate plasticizer, and mixtures thereof. The ink also includes various pigments (depending on the particular colors desired). The ink is thus formulated with an amount of resin (and thus a ratio of resin to pigment), which differs from prior inks and is superior in its ability to remain with the substrate during removal of the substrate, or a section thereof, from an article.
• A further aspect of the present invention provides a removable label, or a label including a removable section, including a substrate having a front side and a back side (wherein the substrate is adapted to receive ink on the front side and the back side), with a first abhesive layer disposed proximal to the back side, and a second abhesive layer disposed adjacent to the first abhesive layer. By use of the first and/or second abhesive layers, the label or section thereof can be easily removed from an article (as opposed to prior labels, which used some adhesives between substrates, resulting in tearing and unwanted transfer of ink).
• A further aspect of the present invention provides a label having at least one set of perforations to provide a removable section of the label. In this aspect, each perforation of the set of perforations exhibits substantially consistent features (e.g., size, shape, depth, etc.) as compared to the other perforations of the set of perforations. Further, this aspect of the present invention provides a label having a plurality of sets of perforations wherein each perforation of the plurality of sets of perforations exhibit substantially consistent features (e.g., size, shape, depth, etc.) as compared to the other perforations of all the plurality of sets of perforations.
• A further aspect of the present invention provides an apparatus for providing consistent perforations within a set of perforations, and consistent sets of perforations, one to another. The apparatus does so, for example, by providing individualized air sources for each of a plurality of pneumatic cylinders, by providing at least one breather vent to reduce and eliminate fluctuations in pressure within a pneumatic cylinder, and by providing a secondary roller including a peripheral surface, or substance thereon that allows for travel of the knives of a perforating wheel beyond its outer surface.
BRIEF DESCRIPTION OF THE FIGURES
• Various features and advantages of the aspects of the present invention will become better understood when the following detailed description is read with reference to the accompanying figures in which like characters represent like parts throughout the figures, wherein:
• FIG. 1 is a perspective view of an exemplary embodiment of a label having a removable section associated with an outer surface of an article in accordance with aspects of the present invention.
• FIG. 2 is a top view of the exemplary embodiment of the label ofFIG. 1.
• FIG. 3 is a bottom view of the exemplary embodiment of the label ofFIG. 1.
• FIG. 4 is a cross-sectional view of the exemplary embodiment of the label ofFIG. 1, taken along line4-4 ofFIG. 1.
• FIG. 5 is a perspective view of the exemplary embodiment of the label ofFIG. 1, depicting the removable section of the label being removed from the article with which it is associated.
• FIG. 6 is a cross-sectional view of the exemplary embodiment of the label ofFIG. 1, taken along line6-6 ofFIG. 5.
• FIG. 7 is a cross-sectional view of an alternate exemplary embodiment of a label having a removable section associated with an outer surface of an article, in accordance with aspects of the present invention.
• FIG. 8 is a schematic depicting an exemplary method of preparing labels in accordance with aspects of the present invention.
• FIG. 9 is a schematic of a gravure cylinder used in an exemplary method of preparing labels in accordance with aspects of the present invention.
• FIG. 10 is a perspective view of a perforating apparatus used to perforate labels in accordance with the aspects of the present invention.
• FIG. 11 is a front view of the perforating apparatus ofFIG. 10.
• FIG. 12 is a partial cross-sectional view depicting an exemplary perforation assembly in conjunction with rollers of the perforating apparatus, in accordance with aspects of the present invention.
• FIG. 13 is a partial cutaway view of the perforation assembly depicted inFIG. 12.
• FIG. 14 is a schematic depicting an exemplary apparatus for application of labels to articles in accordance with aspects of the present invention.
DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS
• One or more embodiments of the present invention will be described below. In an effort to provide a concise description of these embodiments, not all features of an actual implementation may be described in the specification. It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another. Moreover, it should be appreciated that such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure.
• The various exemplary aspects of the present invention, described below, overcome the drawbacks in present removable labels, and labels having a removable section, described in the Background. For example, one aspect provides a label that includes a single substrate that is removable from the article with which it is associated, or includes a removable section thereof, thereby eliminating excess layers, adhesives, etc., and lowering costs of the label.
• Another aspect of the present invention provides a removable label, or a label including a removable section, which does not result tearing, splitting, or damage to the removed portion or transfer of any indicia from the back side of the substrate to any other surface. In one particular embodiment, the label includes a substrate having a front side and a back side, and an ink disposed on the back side of the substrate, wherein the formulation of the ink includes components chosen from nitrocellulose resin, maleic resin, rosin ester resin, phosphate plasticizer, and mixtures thereof. The ink also includes various pigments (depending on the particular colors desired). The ink is thus formulated with an amount of resin (and thus a ratio of resin to pigment), which differs from prior inks and is superior in its ability to remain with the substrate during removal of the substrate, or a section thereof, from an article.
• A further aspect of the present invention provides a removable label, or a label including a removable section, including a substrate having a front side and a back side (wherein the substrate is adapted to receive ink on the front side and the back side), with a first abhesive layer disposed proximal to the back side, and a second abhesive layer disposed adjacent to the first abhesive layer. By use of the first and/or second abhesive layers, the label or section thereof can be easily removed from an article (as opposed to prior labels, which used some adhesives between substrates, resulting in tearing and unwanted transfer of ink).
• A further aspect of the present invention provides a label having at least one set of perforations to provide a removable section of the label. In this aspect, each perforation of the set of perforations exhibits substantially consistent features (e.g., size, shape, depth, etc.) as compared to the other perforations of the set of perforations. Further, this aspect of the present invention provides a label having a plurality of sets of perforations wherein each perforation of the plurality of sets of perforations exhibit substantially consistent features (e.g., size, shape, depth, etc.) as compared to the other perforations of all the plurality of sets of perforations.
• A further aspect of the present invention provides a label including a substrate having a front side and a back side (wherein the substrate is adapted to receive ink on the front side and the back side), including a removable section defined by at least one set of perforations, with at least one abhesive layer disposed proximal to the back side of the substrate and substantially in register with the removable section. This aspect may further provide a second abhesive layer disposed adjacent to the first abhesive layer and substantially in register with the removable section.
• A further aspect of the present invention provides an apparatus for providing consistent perforations within a set of perforations, and consistent sets of perforations, one to another. The apparatus does so, for example, by providing individualized air sources for each of a plurality of pneumatic cylinders, by providing at least one breather vent to reduce and eliminate fluctuations in pressure within a pneumatic cylinder, and by providing a secondary roller including a peripheral surface, or substance thereon that allows for travel of the knives of a perforating wheel beyond its outer surface.
• There are several varieties of labels (e.g., pressure sensitive, shrink sleeve, heat transfer, in-mold, etc.). The description below and the Figures describe and show a pressure sensitive label. However, those of ordinary skill in the art will recognize that the present invention is not necessarily limited to pressure sensitive labels, but may include other label types.
• As can be seen from the Figures, the label includes a plurality of layers. And certain of those layers may be common to the various embodiments described herein. Referring particularly toFIGS. 1-7, thelabel10 includes asubstrate12 having afront side14 and aback side16, afirst ink layer18 disposed on or proximal to thefront side14 of thesubstrate12, asecond ink layer20 disposed on or proximal to theback side16 of thesubstrate12, and a firstabhesive layer22 disposed on or proximal to thesecond ink layer20. Disposed “on,” as used herein, means that there is direct contact between the various layers (such as thesubstrate12 and thefirst ink layer18 or second ink layer20). Disposed “proximal to,” as used herein, means that although a particular layer may be positioned relative to a particular surface (e.g., that thefirst ink layer18 is positioned near thefront side14 of the substrate12), it is not necessary that there be any direct contact between the layer and the surface (e.g., thefirst ink layer18 and thefront side14 of the substrate12), although there may be. For example, another layer, or layers, may be disposed between thefirst ink layer18 and thefront side14 of thesubstrate12 such that thefirst ink layer18 would then be disposed “proximal to” thefront side14 of thesubstrate12.
• Further, various embodiments of thelabel10 of the present invention may include additional layers to those referenced above. These include aprotective layer24 disposed on or proximal to the first ink layer18 (on a side of thefirst ink layer18 that is opposite the substrate12), and a second abhesive layer26 (see particularlyFIG. 7) disposed on or proximal to the first abhesive layer22 (on a side of the firstabhesive layer22 that is opposite the second ink layer20).
• Thelabel10 may be adapted to be removed from anarticle28 with which it is associated. As used herein, “associated with” means that thelabel10 is adhered to, affixed to, joined, connected, merged, fastened, secured, or otherwise cooperative with thearticle28. Alternatively, thelabel10 may include aremovable section30, which is adapted to be removed from thearticle28 with which thelabel10 is associated, while leaving a remainder section orsections32 of thelabel10 with thearticle28. Such aremovable section30 may be defined by, and/or its removal may be facilitated by, at least one set ofperforations34, as will be described in greater detail below.
• Turning now to the various layers of thelabel10 which may be present in various embodiments: In general, thelabel10 includes asingle substrate12 having afront side14 and aback side16. Thefront side14 is the side that is visible when thelabel10 is associated with anarticle28, and theback side16 may not be visible when thelabel10 is associated with anarticle28. Theback side16 of thesubstrate12 is generally opposite thefront side14. As is known to those skilled in the art, acoating36 suitable for printing high quality graphics may be applied (or have been applied) to a side of the substrate, such that thefront side14 exhibits thiscoating36. Such substrates are known in the art as “coated-one-side” or “C1S” substrates.Such coatings36 are usually applied in two steps. First, a base coat is applied, and then a top coat is applied over the base coat. Compositionally,coatings36 useful for printing high quality graphics generally include a fluidized blend of minerals such as coating clay, calcium carbonate, and/or titanium dioxide with a suitable binder such as starch, polyvinyl alcohol, polystyrene, or the like.
• Further, thesubstrate12 may be chosen from a full wet strength paper and a full wet strength metalized paper. As is known to those of ordinary skill in the art, the ability of paper products to maintain a substantial proportion of their original strength after being completely saturated with aqueous solution is known as wet strength. Sometimes the criterion for defining a wet strength grade of paper is that the ratio of wet to dry tensile or burst strength is at least 10% or 15%. The primary means of increasing the wet strength of paper consists of reactive, polymeric chemicals. Most prominent among wet strength additives is the family of polyamidoamine-epichlorohydrin resins.
• Thus, thesubstrate12 of thelabel10 may be a single ply C1S substrate. In particular embodiments, the singleply C1S substrate12 may be coated-one-side paper (such as a clay coated paper) or a one-side metalized paper. Afirst indicia38 may be printed on the coated (e.g., clay coated or metalized) side of the C1S substrate12 (i.e., thefront side14 of the substrate12), and asecond indicia40 may be printed on the uncoated side of the C1S substrate12 (i.e., theback side16 of the substrate12).
• Thefirst indicia38 may be formed from one or more inks that make up thefirst ink layer18. Thefirst ink layer18 may be disposed on or proximal to thefront side14 of thesubstrate12. In one particular embodiment, thefirst ink layer18 may be printed on thefront side14 of thesubstrate12. The ink of thefirst ink layer18 may be printed in the form ofindicia38 such as text, graphics, and/or other decorations, and may be used to provide label information, for example. As is known to those of ordinary skill in the art, the ink (or inks) of thefirst ink layer18 is a liquid containing various pigments and/or dyes that is applied to a surface (such as thefront side14 of the substrate12) to produce indicia (i.e., text, images, graphics, designs, etc.). In general, the ink or inks may include solvents, pigments, dyes, resins, lubricants, solubilizers, surfactants, particulate matter, fluorescers, and other materials (though it is not necessary that all of these materials be present in all inks). Two general types of inks are pigmented inks and dye-based inks. Certain embodiments of the label include a pigmented ink or inks. Further, as is known to those of ordinary skill in the art, pigmented inks contain further agents that ensure adhesion of the pigment to the surface, which prevent the ink from being removed by mechanical abrasion. These agents are typically referred to as resins in solvent-based inks.
• Asecond ink layer20 may be disposed on or proximal to theback side16 of thesubstrate12. In one particular embodiment, thesecond ink layer20 may be printed on theback side16 of thesubstrate12. The ink of thesecond ink layer20 may be printed in the form ofindicia40, such as text, graphics, and/or other decorations, to provide label information, such as for a coupon or game piece, for example. And so, generally, thesecond ink layer20 will be printed on theback side16 of thesubstrate12 at a location that is designed to be removable from thelabel10, leaving the remainder section or sections32 (in embodiments that include aremovable section30 of the label10). However, those of ordinary skill in the art will recognize that thesecond ink layer20 is not limited to being disposed on or proximal to only theremovable section30 of the label. Thus, once thelabel10, orremovable section30 thereof, is removed, the second ink layer20 (and the second indicia40) can be viewed.
• In one aspect of the present invention, the ink or inks of thesecond ink layer20 are disposed on or proximal to theback side16 of the substrate12 (or aremovable section30 thereof) and are formulated to transfer along with the removable label, orremovable section30 of the substrate12 (e.g., of metalized paper). Such substrates are commonly used for labels, and are well known to those of ordinary skill in the art. This eliminates the above-described problem with prior inks not transferring completely or effectively with a removable label or removable section thereof, (such as when a second substrate is separated from a first substrate).
• To accomplish this complete transfer, the ink or inks applied to theback side16 of thesubstrate12 as thesecond ink layer20 is of a formulation that provides greater adhesion to the substrate12 (e.g., a one-side metalized paper). The formulation of the ink of thesecond ink layer20 includes, in one embodiment, a nitrocellulose resin, a maleic resin, a rosin ester resin, a phosphate plasticizer, and pigments. The pigments provide the color for the ink, and the remaining components (i.e., resins and plasticizer) provide the vehicle for the pigments. The pigments that are added to the formulation of the ink of thesecond ink layer20 of the present invention may be chosen based on the particular color or colors desired. In one particular embodiment, pigments may include black pigment (commercially available from Flint Group, of Lebanon, Ohio), rubine red pigment, and HR yellow pigment (rubine red and HR yellow are commercially available from INX International of West Chicago, Ill.). For example, a particular black ink available from Flint Group, of Lebanon Ohio, is TMK40200, which has a formulation of 1-5% phosphate plasticizer, 4-8% rosin ester resin, and 15-20% N/C black chip. As will be recognized by those of ordinary skill in the art, this ink is merely exemplary of inks that may be used in the various aspects of the present invention. The ink, as described above, is of a formulation that provides greater adhesion to theback side16 of thesubstrate12, thereby preventing removal, transfer, etc. of thesecond ink layer20 from theback side16 of thesubstrate12. This is accomplished by formulating the resin content and amount. One particular embodiment of an ink may include a formulation of nitrocellulose resin, maleic resin, rosin ester resin, and a phosphate plasticizer, to form a vehicle for the pigments of the ink, wherein this vehicle comprises 73% of the ink composition. The components of the vehicle are commercially available from Flint Group, of Lebanon, Ohio. For example, a particular vehicle available from Flint Group, of Lebanon Ohio, is TMW-96341, which has a formulation of 10-15% nitrocellulose, 1-5% phosphate plasticizer, and 20-30% maleic resin. As will be recognized by those of ordinary skill in the art, this vehicle is merely exemplary of vehicles that may be used in the various aspects of the present invention. The remaining portion of the ink may include a pigment or pigments selected for various desired color or colors. In one particular embodiment, the ink composition includes 3% rubine red pigment, 22% HR yellow pigment, and 2% black pigment. While the pigments of this particular embodiment are described as black, rubine red, and HR yellow, it will be recognized by those of ordinary skill in the art that these pigments may be used in any combination, and any other pigments of any other combination or alone may be used, based on the desired colors to be used for various indicia (text, graphics, logos, decorations, etc.). The particular pigments recited above are not necessary.
• As described above, the ink or inks of thesecond ink layer20 are formulated to completely transfer with thelabel10, or aremovable section30 thereof, once thelabel10, orremovable section30, is removed from thearticle28. As described in the Background, many inks cannot completely transfer. Also, as pigmented inks remain on the surface to which they are applied (as opposed to dye-based inks), they are more susceptible to mechanical abrasion due to the removal process (and thus separation from theback side16 of the substrate12). Thus, the vehicle of the ink, and particularly the resin components thereof, are formulated (and increased in content) to provide greater adhesion of the ink (and thus complete transfer) while still allowing for high quality of indicia.
• The ink that is applied as thesecond ink layer20 to theback side16 of thesubstrate12 may also be applied as thefirst ink layer18 on thefront side14 of thesubstrate12. Alternatively, other inks may be applied as the first ink layer18 (as the ink of thefirst ink layer18 may not be subjected to the same mechanical abrasion during the removal process). The ink of thefirst ink layer18 thus may include a conventional polyamide inks, or other standard inks. The first and second ink layers18,20 may be disposed on or proximal to thesubstrate12 in a conventional manner by depositing, by gravure printing, or the like, the ink composition or compositions onto one or more desired areas. For example, the labels may be printed both offset and rotogravure on paper, metalized paper, and metalized film.
• Although in this embodiment, thelabel10 is described as having afirst ink layer18, a C1S substrate12 (e.g., metalized paper), and asecond ink layer20, those of ordinary skill in the art will recognize that there does not necessarily need to be afirst ink layer18 disposed on the coated (e.g., metalized)front side14 of thesubstrate12. In other words, labels including indicia only in the form of an ink layer on theback side16 of thesubstrate12 are also contemplated.
• At least one layer of an abhesive (referred to herein as the “first abhesive layer”22) may be disposed on or proximal to the second ink layer20 (on the side of thesecond ink layer20 that is opposite theback side16 of the substrate12). In one particular embodiment, the firstabhesive layer22 may be disposed on thesecond ink layer20. As is known to those of ordinary skill in the art, abhesive compositions are used for coating various materials in order to decrease the tendency of those materials to adhere to other surfaces. Abhesive coating compositions are used, for example, to coat paper, films, or sheets, which are used as backing for pressure-sensitive labels (i.e., carrier sheets from which labels are removed prior to application to an article).
• In the present aspect of the invention, the firstabhesive layer22 is used to prevent thelabel10, orremovable section30 thereof, from adhering to thearticle28. Thus, in embodiments including aremovable section30, the firstabhesive layer22 may be printed generally in substantial registry with theremovable section30 of thesubstrate12. However, in alternate embodiments, the abhesive may be printed over theentire label10. Further, the firstabhesive layer22 may be flood coated or may be applied in a pattern (i.e., other than a flood coating).
• In one particular embodiment, the abhesive of the firstabhesive layer22 includes a polyamide resin, polyether modified dimethylpolysiloxane, polyethylene wax, and paraffin wax. One such abhesive is Abseal™, commercially available from Flint Group, of Lebanon, Ohio. For example, a particular abhesive formulation available from Flint Group, of Lebanon Ohio, is TMW95387, which has a formulation of 30-40% polyamide resin, 0.5-1% PE wax, 1-5% parrifin wax, and 0.5-1% polyether modified dimethylpolysiloxane. As will be recognized by those of ordinary skill in the art, this abhesive is merely exemplary of abhesives that may be used in the various aspects of the present invention. As described above, many prior labels having removable sections exhibit difficulty in removing the removable section from a secondary substrate. Even prior use of certain abhesives has proven unsuccessful, because, as described above, certain applications (such as the standard adhesives used on beer bottles) provide a bond of such strength that the removable section becomes bonded, even in the presence of an abhesive. This is because once a label with an abhesive on a back side of a removable section is prepared, the back side of the entire label will be flood coated, or pattern coated, with an adhesive prior to application. Thus, this adhesive, which bonds the entire label to another surface, also overlies the abhesive coated removable section of the label. Prior abhesives have not exhibited the feature of being able to break free from those adhesives to allow the removable section to be removed. However, the abhesive includes components (polyamide resin, polyether modified dimethylpolysiloxane, polyethylene wax, paraffin wax) that allows the label, or a removable section thereof, to break free from any bond provided by adhesives (including the very strong adhesives used, for example, with beer bottles). The abhesive may also be of an amount that facilitates removal of the label, or a removable section thereof. The firstabhesive layer22, in one embodiment, may be present in an amount in a range of 1.25-1.75 lbs./ream.
• As described above, the firstabhesive layer22 may be printed generally in substantial registry with theremovable section30 of thesubstrate12. Such aremovable section30 may be defined by at least one set ofperforations34 transecting thesubstrate12. Thus, in one embodiment (for example, as shown inFIG. 3), theremovable section30 may be defined by first andsecond perforation lines52,54 transecting thesubstrate12. However, by being in “substantial registry,” it is not mandatory that the abhesive cover only the removable section30 (i.e., defined by the boundary of any at least one set of perforations34). Rather (and referring particularly toFIG. 3), the firstabhesive layer22 may be printed in substantial registry by overlapping any at least one set ofperforations34, such that some amount of abhesive may be coated onto any remainder section orsections32 of thelabel10. However, as will be recognized by those of ordinary skill in the art, an adhesive will also be applied to theremainder sections32 of thelabel10, and this adhesive will be in an amount to retain theremainder sections32 with thearticle28 during and after removal of theremovable section30. One particular embodiment includes a first perforation line separating the label into removable section that comprises approximately 65% of the label, and a remainder section that comprises approximately 35% of the label.
• Thelabel10 may further include a protective layer24 (such as a varnish) disposed on thefront side14 of thesubstrate12. Any suchprotective layer24 may operate as a protective surface and to improve processing. For example, wax can provide optical clarity. Further, the protective layer can result in better and more consistent die-cutting of the labels once formed. In one particular embodiment, the protective layer may be an overprint varnish including an acrylic emulsion resin, an acrylic solution resin, polyether modified dimethylpolysiloxane, a surfactant, and polyethylene wax. Such an overprint varnish is commercially available from Flint Group, of Lebanon, Ohio. This protective layer can make the label more slick and lubricious, thereby allowing it to more through the die-cutting operation better than prior labels, and labels without such a protective layer. For example, a particular protective layer available from Flint Group, of Lebanon Ohio, is TTW-233116, which has a formulation of 40-50% acrylic polymer, 10-17% PE wax, 8-13% acrylic solution resin, 1-3% surfactant, and 0.5-1% polyether modified dimethylpolysiloxane. As will be recognized by those of ordinary skill in the art, this formulation is merely exemplary of a formulation for protective layers that may be used in the various aspects of the present invention.
• As described above, thelabel10 may include afirst layer22 of an abhesive disposed on or proximal to thesecond ink layer20. Still further, thelabel10 may include a secondabhesive layer26 disposed on or proximal to thefirst layer22 of abhesive (on the side of the firstabhesive layer22 that is opposite the second ink layer20). The secondabhesive layer26 may be applied in the same manner, and may include the same composition as the firstabhesive layer22. Alternatively, the secondabhesive layer26 may be disposed in a different manner, different location(s), etc. than the firstabhesive layer22, and may be of a different composition than the firstabhesive layer22. The secondabhesive layer26 may be present in an amount in a range of 1.25-1.75 lbs./ream. In embodiments including more than one abhesive layer, the layers may or may not be printed over the same amount of thelabel10 or with the same pattern. In one particular embodiment, the abhesive of the secondabhesive layer26 includes a polyamide resin, polyether modified dimethylpolysiloxane, polyethylene wax, and paraffin wax. Such an abhesive is Abseal™, commercially available from Flint Group, of Lebanon, Ohio.
• The printing of various layers onto the substrate12 (e.g.,first ink layer18,protective layer24,second ink layer20, first layer ofabhesive22, and second layer of abhesive26) may be accomplished in one pass through a press56 (as is shown inFIG. 8). Referring now toFIG. 8, asubstrate12, as described above, can be seen progressing through thepress56 to apply various layers of the label. In particular, thesubstrate12 first passes through first andsecond gravure cylinders42,44, which apply the first and second ink layers18,20 to thesubstrate12. A third gravure cylinder46 then applies theprotective layer24 over thefirst ink layer18. Fourth andfifth gravure cylinders48,50 apply the first and secondabhesive layers22,26 over thesecond ink layer20. While the schematic depicted inFIG. 8 shows the various layers being applied to the substrate via gravure cylinders, it will be recognized by those of ordinary skill in the art that this is merely one exemplary method of applying layers to a substrate to form a label, and other standard methods known to those skilled in the art may be used. Further, while the illustrated embodiment depicts all layers as being applied during one pass through apress56, this is not necessary. For example, the abhesive (either the first orsecond layer22,26, or just the second layer26) can be printed on a second pass through thepress56. The end result is a plurality oflabels10 including printed indicia on both sides of thesubstrate12.
• As described above as an example, and referring now toFIG. 9, the various layers can be applied using agravure cylinder58. While, as described above, the particular use of gravure cylinders is not necessary, and other methods of application may be used, the following is a description of how a gravure cylinder may be used to apply the firstabhesive layer22. Gravure printing units are known to those skilled in the art. Gravure printing units include a rotary press that includes atray62, which is filled with the abhesive. A gravure cylinder58 (theouter surface64 of which has gravure cells (not shown) for taking up the abhesive), is mounted so that it can rotate at least partially within thetray62 in such a way that, as it is rotating, while thepress56 is running, it dips into the abhesive so that the gravure cells are filled with the abhesive. Substantially perpendicularly above thegravure cylinder58, animpression roller68 is mounted rotatably for rotating opposite to the direction of the rotation of thegravure cylinder58. Theimpression roller68, together with thegravure cylinder58, forms aroller gap70 therebetween, through which thesubstrate12 and ink layers18,20, which are to be printed with abhesive, is passed during the operation of thepress56 in order to take up abhesive from the gravure cells on theouter surface64 of thegravure cylinder58.
• For carrying out the process, excess abhesive on thegravure cylinder58 may be stripped from theouter surface64 thereof with the help of a doctor blade (not shown) or other stripping device, which engages theouter surface64, thereby leaving abhesive in the etched gravure cells. Afterwards, in theroller gap70, the abhesive is drawn from the gravure cells of theouter surface64 by means of theimpression roller68 exerting an elastic counterpressure and is taken up by thesubstrate12.
• Referring back toFIGS. 1-7, thelabel10, in one embodiment, further includes at least one set ofperforations34. As is known to those of ordinary skill in the art, “perforation” refers to the puncturing of a material with a harder (usually sharp) object to create an aperture or indentation. And, in particular, perforation refers to the practice of creating a long series of holes or indentations so that paper can be torn more easily along this “perforation line.” As used herein, a “perforation” will generally refer to a single aperture or indentation that is created in a label. And, as used herein, a “set of perforations” will generally refer to a plurality of apertures or indentations that are grouped together, such as in a perforation line (although it will be recognized by those of ordinary skill in the art that such a set of perforations need not be linear, but rather must merely be grouped to facilitate a tearing along the perforations of the set of perforations).
• The at least one set ofperforations34 may define, or partially define, theremovable section30 of thelabel10. And, the at least one set ofperforations34 may facilitate removal of theremovable section30 from the remainder of the label10 (i.e., from the remainder section or sections32). The at least one set ofperforations34 may form a single perforation line transecting thesubstrate12, such that aremovable section30 is defined on one side of the single perforation line, while the remainder of thelabel10 on the opposite side of thesingle perforation line34 remains associated with the article28 (such as by adhesion thereto). Alternatively, a plurality of sets ofperforations34 may transect thesubstrate12, for example. Thus, in such an alternative embodiment, thelabel10 may include a first set of perforations forming afirst perforation line52 transecting thesubstrate12, and a second set of perforations forming asecond perforation line54 transecting thesubstrate12, the first andsecond perforation lines52,54 not being collinear. In this alternative embodiment, theremovable section30 may be defined in the region between the first andsecond perforation lines52,54, while the portions of thelabel10 not between the first andsecond perforation lines52,54 (i.e., remainder sections32) remain associated with thearticle28 following removal of theremovable section30. (Those skilled in the art will recognize that there may be more than one removable section, such as by having the two sections of the label not between the first andsecond perforation lines52,54 being removable, while the portion of thelabel10 between the first and second perforation lines remains with thearticle28.) In yet a further alternative embodiment, at least a third perforation line (not shown) may be made perpendicular to the first perforation line or first and second perforation lines. And still further, a fourth perforation line (not shown) may be made perpendicular to the first perforation line or first and second perforation lines, and not collinear with the third perforation line. As a consequence, thelabel10, in this alternate embodiment, is provided with a substantially quadrilateral perforated area that is removable. Those skilled in the art will recognize that the above embodiments are merely exemplary, and one of ordinary skill in the art may configure the number and shape of sets of perforations in any manner to produce a desired removable section or sections.
• As described above with reference toFIG. 8, the labels are printed on a press (possibly in one pass) with thefirst ink layer18 and protective layer24 (e.g., overprint varnish) being disposed on thefront side14 of the substrate12 (such as bygravure cylinders58—or other methods known to those skilled in the art), and with thesecond ink layer20, firstabhesive layer22, and/or secondabhesive layer26 being disposed on theback side16 of the substrate12 (again, such as bygravure cylinders50—or other methods known to those skilled in the art). After printing of these layers (e.g.,first ink layer18,protective layer24,second ink layer20, firstabhesive layer22, and/or second abhesive layer26), and referring now toFIGS. 10-13, thelabels10 may be perforated on a perforatingapparatus72. This perforatingapparatus72 may be in-line with thepress56, such that after the various layers are printed onto thesubstrate12 to form thelabels10, thelabels10 are then perforated before they exit thepress56. Alternatively, the perforatingapparatus72 may be associated with a separate apparatus from thepress56. For example, the perforating apparatus may be associated with a slitter/rewinder74 (see particularlyFIG. 10). Finally, the perforatingapparatus72 may not be associated with, positioned on, or attached to the press or any other apparatus, but may be a separate stand-alone perforating apparatus. In the illustrated embodiment ofFIG. 10, thelabels10 are shown as being perforated on a slitter/rewinder74. However, this is merely exemplary, and the present invention is not limited to perforations being formed in a perforatingapparatus72 associated with a slitter/rewinder74.
• As is known to those of ordinary skill in the art, a slitter/rewinder74 includes straight or circular blades (not shown), to cut material into narrow strips. Thus, in the present invention, a web of labels10 (e.g., asheet 30 inches wide that will be cut into many narrower strips of labels) is run through the slitter/rewinder74. The cutting blades (not shown) of the slitter/rewinder74 are set to a width that is desired for thelabels10. Once the web oflabels10 is fed through the slitter/rewinder74 and slit into narrower strips, rollers (not shown) on the exit side of the slitter/rewinder74 rewind the cut material. In the illustrated embodiment, the perforatingapparatus72 is a separate apparatus that can be associated with (e.g., positioned relative to, such as by being placed onto, for example) the slitter/rewinder74 in order to adapt the slitter/rewinder for perforating a web oflabels10.
• Perforations, in and of themselves, are known and are made in ways known to those of ordinary skill in the art. For example, in one general and exemplary method, an infeed roller directs a web of labels into a perforation apparatus, and a draw roller disposed generally “downstream” from the infeed roller pulls the web of labels through the perforation apparatus. Positioned between the infeed and draw rollers are one or more perforating wheels76 (the number of wheels can be altered depending on the number of perforation lines desired). The outercircumferential surface78 of each perforatingwheel76 is provided with a plurality of “knives”80, which serve to puncture the web oflabels10 as it passes, thereby providing the desired perforations. In other words, theouter circumference78 of the perforatingwheels76 defines a series ofprotrusions80 that are capable of puncturing or indenting the web oflabels10. Each of the protrusions are separated by aportion82 of theouter circumference78 of thewheel76 that does not include any protrusion, such that anysubstrate12 is not punctured or indented by thenon-protrusion portion82 of theouter circumference78 of the perforatingwheels76. Proximal to the perforatingwheels76 is asecondary roller83. The web oflabels10 is stretched taut over thesecondary roller83 and passes between the perforatingwheels76 and thesecondary roller83. The “knives”80 of the perforatingwheels76 puncture thelabels10 as the web passes between the perforatingwheels76 andsecondary roller83.
• During the perforation oflabels10, the penetration depth of theknives80 may be adjusted, so that it is possible to make the desired perforation. In particular, when implementing types of perforation in which the perforatingknives80 are only intended to partly penetrate (i.e., indent) thelabels10, it is especially important to adjust the penetration depth of theknives80 of the perforatingwheels76 into thelabels10. The very minute tolerances involved become clear when one considers that the thickness of thelabels10 may be as little as 0.06 mm and thinner.
• Referring toFIGS. 10-13, the position of the perforatingwheels76 relative to thesecondary roller83 may be mechanically adjusted using setscrews86, and air pressure is used to set the depth to which the perforating wheel(s) will cut (for example, as provided by a pneumatic cylinder88). Prior perforating apparatus also used perforating assemblies including a perforating wheel or plurality of perforating wheels that were each associated with a pneumatic cylinder for controlling the pressure applied to the perforating wheels when making perforations. However, in those prior apparatus, and as described in the Background, a single air hose provided the air for the pressure of all of the pneumatic cylinders. As described above, this resulted in drawbacks that the pressure may not be constant for each perforating wheel within the apparatus, due to differences in age between the various cylinders, differences in tolerances due to manufacturing, different amount of build-up or blockages amongst the cylinders, etc. Further, such a configuration requires that only one pressure can be set for all perforating assemblies associated with a single perforating apparatus.
• However, the perforatingapparatus72 of one aspect of the present invention includes components that allow for the pressure delivered to each of thepneumatic cylinders88 of the perforatingassemblies84 to remain constant at the set desired level. To that end, and referring now toFIGS. 10-13, there are shown therein components of a perforatingapparatus72 according to the present invention. In particular, the perforatingapparatus72 is shown, in the exemplary illustrated embodiment, as an apparatus that can be placed onto a standard slitter/rewinder. The perforating apparatus includes aframe90 for supporting other components of the apparatus; aflow valve panel92 extending between first andsecond sides94,96 of theframe90; a plurality offlow control valves98 positioned on theflow valve panel92; a plurality ofair hoses100 having first and second ends102,104, with each of the first ends102 associated with one of the plurality offlow control valves98; a plurality ofair mufflers106, wherein each one of the plurality ofair mufflers106 is attached to a second end104 of one of the plurality ofair hoses100; a plurality ofpneumatic cylinders88, wherein eachpneumatic cylinder88 is operatively connected to one of the plurality ofair mufflers106; a plurality of perforatingwheels76, wherein each perforatingwheel76 is operatively connected to one of the plurality ofpneumatic cylinders88; at least oneidler roller110, and asecondary roller83.
• The slitter/rewinder74 includes an infeed roller (not shown) disposed proximal to a first end thereof, and a draw roller (not shown) disposed proximal to a second end thereof. The perforatingapparatus72 of the illustrated embodiment is positioned relative to the slitter/rewinder74 such that it is operatively disposed along the path of travel of any web oflabels10 between the infeed roller and draw roller. As is shown in the Figures, the web oflabels10 proceeds around afirst idler roller110, around thesecondary roller83, and around asecond idler roller112. Before the web of labels encounters thefirst idler roller110, it encounters the infeed roller of the slitter/rewinder. After the web of labels encounters thesecond idler roller112, it encounters the draw roller of the slitter/rewinder74. The draw roller of the slitter/rewinder is connected to a drive motor (not shown) such that the web of labels is pulled through the slitter/rewinder74 and perforatingapparatus72.
• As is described above, the apparatus includes a plurality of perforating wheels. Theperforator wheels74 each are formed with a plurality of spaced perforatingknives80 around the outer circumferential surface of each of the perforating wheels. Theknives80 are provided with relatively sharp cutting edges. Theknives80 are adapted to be pressed against thelabel10. As a result, each perforating wheel is adapted to form a set of perforations in thelabel10 as it passes between theperforator wheel76 andsecondary roller83. As shown in the figures, the perforatingwheels76 of the illustrated embodiment will form longitudinal perforation lines. However, those of ordinary skill in the art will recognize that perforations lines of other directions (e.g. latitudinal), or sets of perforations of shapes other than lines, may be formed. In particular, theperforation wheels76 are attached toholders114 that may be adjusted such that theknives80 of the perforatingwheels76 will perforate to a set depth.
• More specifically, by means of aperforating wheel76, which is rotatably mounted on aholder114, a set ofperforations34 is made in the web oflabels10 that is moving between the perforatingwheel76 and thesecondary roller83. Thus, one perforating wheel will make one set of perforations in a label. As can be seen in the illustrated embodiment of the figures, the perforatingapparatus72 includes a plurality of perforatingwheels76. Thus, a plurality of sets ofperforations34 can be made across a web oflabels10. As is known to those of ordinary skill in the art, a web oflabels10 will include many rows oflabels10 across the web. And since each of the perforatingwheels76 is individually positionable relative to the web oflabels10, the number of sets ofperforations34 perlabel10 can be controlled. Thus, eachlabel10 may have one set of perforations34 (such as a perforation line52) transecting the label, or each label may have multiple sets of perforations34 (such as two ormore perforation lines52,54 transecting each label.
• As described above, each perforatingwheel76 is associated with apneumatic cylinder88 that allows for a particular pressure (e.g., air pressure) to be supplied, such that theknives80 of the perforatingwheel76 can contact and perforate the web oflabels10 at a particular desired pressure. As is known to those of ordinary skill in the art,pneumatic cylinders88 are mechanical devices which produce force, often in combination with movement, and are powered by compressed gas (e.g., air). The pneumatic cylinders impart a force by converting the potential energy of compressed gas into kinetic energy due to the pressure gradient established by the compressed gas being at a greater pressure than the atmospheric pressure. The air in thecylinder88 thus expands, and this air expansion forces apiston116 to move in a desired direction. As is known to those of ordinary skill in the art,pneumatic cylinders88 may be adjusted so as to control the amount of extension and/or retraction of thepiston116 once actuated. Thepiston116 is operatively coupled to the perforating wheel76 (whether directly, or indirectly via a holder114) such that thewheel76 may be moved as a result of movement of thepiston116.
• More specifically, and referring now toFIG. 13, a portion of the perforatingapparatus72 that includes anassembly84 ofpneumatic cylinder88 and perforatingwheel76 is shown in cross-section. The assembly also includes aholder114, which serves to hold theperforating wheel76, and setscrews86, which are used to mechanically position the perforatingwheel76 at a desired location relative to any web oflabels10 to be passed through the perforatingapparatus72. Theholder114 has anaxle118 to which theperforating wheel76 can be fastened in a rotatable manner. Theholder114 is operatively connected to a piston of the pneumatic cylinder, such that it may be cooperatively moved along with thepiston116 during movement of thepiston116. For rectilinear guidance of movement, guide bushes (not shown) may be provided to prevent a rotation of theholder114 about the axis of thepiston116. Thepiston116 and consequently theperforating wheel76 are moved downward by pressure, in particular, air pressure, being admitted to anair space122 within thepneumatic cylinder88, while thepiston116 is fixed in position. The resulting pressure is transmitted to thepiston116, and, as a result, thepiston116 is moved downward, thereby cooperatively moving the perforatingwheel76 downward.
• As described above, each wheel of the plurality of perforatingwheels76 is operatively connected to one of thepneumatic cylinders88 of the plurality ofpneumatic cylinders88. And, each of thepneumatic cylinders88 is, in turn, operatively connected to oneair hose100 of the plurality ofair hoses100. Thus, eachassembly84 ofpneumatic cylinder88,holder114, and perforatingwheel76, has air individually supplied by itsown air hose100. As a result, certain of the drawbacks of prior perforating apparatus, described in the Background, are eliminated. First, thepresent perforating apparatus72 allows for consistent perforation pressures (and thus consistent perforations) across each label. For example, if a label is designed to include first andsecond perforation lines52,54 running parallel and non-collinear to one another, each of the twoperforating assemblies84 making those two perforatinglines52,54 can be individually set to make sure each is being made with the same amount of pressure being applied. Second, the prior apparatus only allowed for one pressure to be set at any one time for all the perforating assemblies in the apparatus, whereas, due to the individual air supplies for each perforatingassembly84, each perforatingassembly84 can be individually adjusted, and so different pressures may be applied by the multiple perforatingwheels76, if so desired.
• Further, during operation of a perforatingapparatus72, the pressure within thepneumatic cylinder88 itself may not be held constant. Variances in the operation of the apparatus may cause the pressure to fluctuate (i.e., increase or decrease relative to the desired set pressure). This can cause inconsistencies in perforations along each single line of perforations. However, the perforating apparatus of the present invention includes a plurality ofair mufflers106, each air muffler having afirst end124, asecond end126, and abreather vent member128. In the illustrated embodiment, each one of the plurality ofair mufflers106 is attached at itsfirst end124 to a second end104 of one of the plurality ofair hoses100, and thesecond end126 of each of the plurality ofair mufflers106 is attached to apneumatic cylinder88. Thus, as air travels from an air source (not shown), through theair hose100, and into thepneumatic cylinder88, it passes through theair muffler106, which is disposed between theair hose100 andpneumatic cylinder88.
• In the illustrated embodiment, theair muffler106 is of a T-shape. The air muffler includes afirst passageway130 for the air which is defined by the T-pipe, and proceeds along a longitudinal axis from the air hose to the pneumatic cylinder. A branchedportion132 of the T-pipe, that defines asecond passageway134, lies perpendicular to the first passageway130 (and is in fluid communication therewith). An end of thesecond passageway134 opposite from the intersection of the first andsecond passageways132,134 includes abreather vent128. In one embodiment, thebreather vent128 is a porous bronze element having a filtration rating of 40 microns. Such T-pipes and breather vents are commercially available from the McMaster-Carr Supply Company, of Elmhurst, Illinois. The T-pipe can be selected with fittings to match the size of the pneumatic cylinders and air hoses, and the breather vents can be selected to match the fittings of the T-pipe, as known to those of ordinary skill in the art. Additionally, aseparate substance136 may be placed inside thesecond passageway134 and proximal to the porous element. For example, a cotton-type substance may be present as part of the breather vent. Theair muffler106 assists in keeping the desired pressure within the pneumatic cylinder constant. For example, should pressures fluctuate by rising in the pneumatic cylinder88 (above the desired set pressure), thebreather vent128 allows for escape of air to reduce the pressure and maintain it at its set level.
• Further, in the perforating apparatus, the outer surface of thesecondary roller83 is hard, as the rollers are generally made of a hard substance, such as steel. As described above, during a perforating operation, the web oflabels10 moves against this hard surface as the “knives”80 of the perforatingwheels76 puncture thelabels10. However, the hard surface of thesecondary roller83 does not provide any “give,” such that theknives80 may be stopped by the hard surface from puncturing thelabels10 to the desired depth. However, as can be seen in the illustrated embodiment ofFIG. 12, thesecondary roller83 of the perforatingapparatus72 of this aspect of the present invention includes aperipheral wrap138 about its outer circumference140. Thiswrap138 is made of a material that does not have the hardness of steel, and displays some “give,” such that theknives88 of the perforatingwheels76 are not limited in their degree of travel by theperipheral wrap138. In other words, theknives80 of theperipheral wheels76, in an exemplary embodiment, puncture through the web oflabels10, and at least the outer ends of theknives80 enters into theperipheral wrap138. For example, the material may be a polymer film. Further, this polymer film may, for example, be chosen from olefin film, cellophane film, and polyethylene terephthalate (PET) film. The film may have a pressure sensitive adhesive on one side that allows the film to adhere to thesecondary roller83. Thus, in one embodiment, the material may be Scotch tape, commercially available from 3M, of St. Paul, Minn. While the above describes use of polymer films such as olefin film, cellophane film, and PET film, it will be recognized by those of ordinary skill in the art that the material is not limited to these films, but may include any other materials that would suffice to allow the knives of the perforating wheels to enter into the peripheral wrap. Further, the thickness of theperipheral wrap138 about thesecondary roller83 can be of any thickness that suffices to support the necessary degree of travel of theknives80 of the perforatingwheels76.
• Following preparation, thelabels10 may be die-cut for a particular use, or application to aparticular article28. After die-cutting, thelabel10 is applied to anarticle28. This may be done, for example, on a cold glue, cut-and-stack labeling machine. Referring toFIG. 14, bundles oflabels10 are put in amagazine142 with theback side16 of thelabel10 exposed. Awheel143 turns a number ofpalettes144. Thesepalettes144 are steel or rubber and are in the shape of thelabel10. Thispalette144 comes in contact with aroller146 containing theglue148. Thisglue148 is sheared onto thepalette144 in a controlled thickness. The glue-containingpalette144 then comes in contact with theback16 of thelabel10, causing thelabel10 to be pulled onto thepalette144. Theback side16 of thelabel10 is affixed to the object to be labeled through the use of an adhesive148. Die-cut labels can use conventional wet labeling glue, such as but not limited to, Henkel BL300 for brewery applications, Aqueous adhesives or Hot Melt adhesives from Fuller, Findley, or National Starch and Chemical for wraparound labels, Morton International Aqueous 37P295 or Solvent 33P5 type Gel Lacquer heat activated adhesives or pressure sensitive adhesives such as Nacor 4990 from National Starch and Chemical Company. Thepalette144 with the glue-containinglabel10 turns toward a “gripper wheel”150.Fingers152 on thegripper wheel150 pull the glue-containinglabel10 from thepalette144 and place it on thearticle28. Thelabel10 is then smoothed onto thearticle28 with various brushes and rollers154.
• As various changes could be made in the above-described aspects and exemplary embodiments without departing from the scope of the invention, it is intended that all matter contained in the above description shall be interpreted as illustrative and not in a limiting sense

Claims (17)

1. A perforating apparatus comprising:

a plurality of perforating assemblies, each perforating assembly of the plurality of perforating assemblies including a perforating wheel operatively coupled to a pneumatic cylinder; and

a plurality of air hoses, wherein each pneumatic cylinder of each perforating assembly is operatively coupled to, and in flow communication with one air hose of said plurality of air hoses.

2. The perforating apparatus ofclaim 1, further comprising a frame, and wherein said plurality of perforating assemblies is supported by said frame.

3. The perforating apparatus ofclaim 2, further comprising a plurality of valves, wherein each air hose of said plurality of air hoses is associated with one valve of said plurality of valves.

4. The perforating apparatus ofclaim 1, further comprising a plurality of air mufflers, wherein at least one air muffler of said plurality of air mufflers is operatively coupled to a perforating assembly of said plurality of perforating assemblies.

5. The perforating apparatus ofclaim 4, wherein each air muffler is in flow communication with one air hose of said plurality of air hoses and one pneumatic cylinder of said plurality of perforating assemblies.

6. The perforating apparatus ofclaim 5, wherein each air muffler includes a first end and a second end and a flow path between said first end and said second end, and wherein said first end is operatively coupled to said air hose and said second end is operatively coupled to said pneumatic cylinder.

7. The perforating apparatus ofclaim 6, wherein each air muffler of said plurality of air mufflers further comprises a breather vent positioned along said flow path.

8. The perforating apparatus ofclaim 7, wherein said breather vent is a porous element.

9. A perforating assembly comprising:

a perforating wheel operatively coupled to a pneumatic cylinder; and

an air muffler operatively coupled to and in flow communication with said pneumatic cylinder.

10. The perforating assembly ofclaim 9, wherein said air muffler is further operative coupled to an air hose.

11. The perforating assembly ofclaim 10, wherein said air muffler includes a first end and a second end and a flow path between said first end and said second end, and wherein said first end is operatively coupled to said air hose and said second end is operatively coupled to said pneumatic cylinder.

12. The perforating assembly ofclaim 11, wherein said air muffler further comprises a breather vent positioned along said flow path.

13. The perforating assembly ofclaim 12, wherein said breather vent is a porous element.

14. The perforating assembly ofclaim 13, further comprising a fibrous element positioned proximal to said porous element and along said flow path.

15. A perforating apparatus comprising:

a perforating wheel having a plurality of protrusions disposed about the outer circumference of said perforating wheel;

a roller; and

a wrap disposed around the outer circumference of said roller;

wherein the perforating wheel is positioned in relation to said roller such that a sheet is capable of passing between said perforating wheel and said roller, and the protrusions of said perforating wheel are adapted to perforate said sheet, and the path of travel of said protrusions is not limited by said wrap.

16. The perforating apparatus ofclaim 15, wherein said wrap comprises a polymer film.

17. The perforating apparatus ofclaim 16, wherein said polymer film is chosen from olefin film, cellophane film, and PET film.

Images