US2278673A - Adhesive coated sheet material - Google Patents

Description

M. SAVADA ET AL ADHESIVE COATED V SHEET MATERIAL.

Filed March 1B, 1940 April 7, 1942.

Gttorneg Patented Apr. 7, 1942 ort-FICE ADHESIVE COATED SHEET MATERIAL Martin Savada and William Horowitz, New York, N. Y.

Application March 13, 1940, Serial No. 323,700 1 claim. (01454-43) This invention relates generally to sheet material, such as fabric, paper, etc., coated on one surface thereof with a pressure-sensitive adhesive and provided with a backing or protective layer whereby when the fabric is wound in a roll the outer or right side thereof is maintained out of contact with the adhesive. When the fabric or other sheet material is to be used, the same is unwound from the roll and the backing is removed thereby to expose the adhesive on the back of said material to permit attachment of said adhes ive coated sheet material.

While the invention is in general applicable to fabrics, paper or other sheet material of any width, said invention is particularly advantageous in its application to ribbons, tapes, bindings, ornamental strips, labels and other narrow fabrics for which there are numerous uses. Accordingly, the invention will be described and illustrated in its application to narrow strips or webs of fabric, paper or other sheet material.

Heretofore various materials have been utilized as the backing or protective layer for fabrics or other sheet material coated with pressure-sensitive adhesive. Among the materials which have been utilized for such protective layers or backings are glazed paper or glassine, Holland cloth, netting, etc. These materials are objectionable. Thus, for example, in the case oi' glazed paper and Holland cloth, these materials, because of the Moreover when the sheet material to be protected is paper, the backing layer, in many instances, tears the bers of the paper which adhere to the backing layer when the latter is stripped from the paper.

To obviate the disadvantages and objections to the use of backing materials such as glazed paper, glassine or Holland cloth having a continuous surface, it has been proposed to utilize woven materials such as cloth netting but such materials, while alleviating to some extent the diiculties encountered in the use of such materials as glazed paper or Holland cloth are nevertheless highly objectionable. More particularly, such netting when attached to the adhesive coated fabric results, in the case of cloth, in the unravelling of the threads of the backing which adhere to the adhesive of the adhesive coated face material, and the more closely woven the backing is, the greater is the tendency to adhere to the adhesive coated material. When applied 15.0 paper or other .non-woven face materials, the netting while sometimes less objectionable than glazed paper or Holland cloth is nevertheless unsatisfactory.

The above mentioned objections and disadvantages are eliminated in accordance with the pr'esent invention by providing the adhesive coated face material with a backing or protective layer of netting which is bias cut and applied to the adhesive coated surface of the face material so that the warp and weft threads of the backing are arranged obliquely with respect to the longitudinal extent of the adhesive coated material. In this way are eliminated, not only the disadvantages of the netting as heretofore applied but it is also unnecessary to use such other backing materials as glazed paper or Holland cloth.

i Among the advantages derived from the use of bias cut netting as the backing material for the pressure-sensitive adhesive coated fabric are that a more open netting can be used than was possible with a netting cut on the straight of the goods since the ravelling of the threads of the netting is eliminated as will clearly appear in the more detailed description of the invention. The pre-V vention of ravelling is a very important advantage in itself besides enabling the use of a more open netthan is possible when the netting is cut on the straight of the goods. Adhesion of the backing to the adhesive coated material in a straight line is eliminated when the netting is applied to the adhesive coated material in accordance with the present invention. This is an important advantage more particularly in reference to the use of the backing on adhesive coated paper. By adhesion in a straight line is meant the more or less continuous separation or tearing away of the bres or of a brous layer of the paper and the adhesive coating thereon when the protective layer is stripped from such material. When this occurs, the face material is ingeneral impaired or destroyed and, more specifically, its adhesive surface is at least partially removed.

Another advantage of the present invention is that the use of bias cut backing net or the like results in displacement of the individual threads of the backing when-the latter is removed from the material under tension thereby loosening the Athreads of the backing from the adhesive coated material. In other words, when the net backing is cut on the bias and applied to the face material as stated above, in the event that a strong pull is necessary to separate the backing from the adhesive vcoated face material, the threads of the backing are pulled and displaced with respect to each other in the warpand in the weft of the backing and thus are treed more easily from the face material.

When the bias cut netting is applied in accordance with the present invention to narrow fabrics of cloth or other. woven material. ravelling of said cloth is reduced to a minimum, as the threads of the backing do not extend parallel to the threads of the adhesive coated material but on the contrary are transversely or obliquely arranged and the backing has open edges whereby the adhesion of the backing at the side edges of the face fabric is substantially prevented. Inasmuch as the use of bias cut netting as the backing for the adhesive coated material reduces the adhesion between the backing and the adhesive cbated material, thus facilitating the separation of the backing from such material to which it is applied, the present invention permits of the use on the face material of an adhesive which is stronger than would otherwise be possible and on that account it is possible, in accordance with the present invention, to provide a fabric with a coating of an adhesive of greater adhesive properties than was feasible heretofore for such uses where a strong bond between the face material and the article to which it is applied is desired.

The above and other features and advantages of the invention will be more fully understood from the following description considered with reference to the accompanying drawing.

In the drawing:

Fig. 1 is a plan view of adhesive coated narrow fabric, such as woven cloth, ribbon, tape, etc.. provided with a protective layer or backing in accordance with the present invention, part of the adhesive coated cloth being detached from the backing and turned back for the purposes of illustration;

Fig. 2 is a sectional view on the line 2-2 of Fig. 1;

Fig. 3 is a view similar to Fig. 1, illustrating the application of the invention to non-woven sheet material such as, for example, paper;

Fig. 4 is a sectional view on the line 4--4 of Fig. 2;

Fig. 5 is a plan view of a label strip provided with a backing in accordance with the present invention;

Fig. 6 is a view similar to Fig. 5 showing one of the labels detached from the backing;

Fig. 7 is a sectional view on the line '|I of Fig. l;

Fig. 8 is a plan view of a label detached from the backing strip.

Referring now to the drawing in detail, and first to the application of the invention illustrated in Figs. 1 and 2, the sheet material I comprises a face strip or web of fabric such as woven cloth, for example a length of ribbon having on one surface thereof a coating I4 of pressure-sensitive adhesive. Said adhesive is of a well known type which is non-drying and which is capable of adhering with sufllcient tenacity to most surfaces, resisting displacement from the material or object to which it is applied but -which can ordinarily be removed by a stripping force applied at an angle to the surface to which the material is applied. As adhesives of this character are well known further description thereof is unnecessary. The backing layer I8 comprises a thin open mesh netting which is cut on the bias and which is applied to the adheslve coated surface of cloth layer I2 in such manner that the warp and weft threads of said netting are transversely and preferably obliquely arranged with respect to the longitudinal extent of the cloth.

In the drawing. the threads of the net of layer Il are for illustrative Purposes shown substantially thicker than in the actual net material, and it will be understood that in this connection that the thickness of the threads of the netting can be the same as that of netting as heretofore used for backings. However, in accordance with the present invention, the netting can have a more open weave than was heretofore practical. The netting of backing Il is preferably coated with glue or sizing to hold the threads in woven relation. As indicated more or less conventionally at I8 in Fig. 1, the cloth I2 is cut on the straight and the backing layer Il of netting is cut on the bias and the warp and weft threads thereof are obliquely arranged in respect to the warp and weft threads of the cloth comprising the fabric strip I2.

Ordinarily, narrow fabrics composed of cloth strips such as the strip I2 are produced from wider fabrics by slitting the same with the result that the edges of the narrow fabrics are non-selvedge edges. While the adhesive coating holds the warp threads of the cut cloth strips or webs, tending to prevent ravelllng thereof, such ravelling frequently occurs when fabric cut on the straight of the goods'is used as the backing or protective layer. When, however, in accordance with the present invention, the fabric of the backing layer is cut on the bias and applied substantially as herein described, the removal of the backing layer from the face fabric strip I2 is greatly facilitated and at the same time ravelling of the edges of the face layer is obviated. Furthermore in accordance with the present invention the tendency of the threads of the fabric of the backing layer to adhere to the adhesive coated surface of the face layer is eliminated as said backing layer is non-ravelling since the warp as well as the weft threads of said backing layer extend transversely of the fabric.

In Figs. 3 and 4, the material IDA embodying the invention comprises a face strip I2a composed of non-woven continuous sheet material such as paper, Cellophane, etc., the adhesive coated surface of said face material being indicated at Ila. The backing layer I8 composed of bias cut netting as described above in reference to material III is applied to the face material I2a so that the warp and weft threads of said backing layer extend obliquely to the longitudinal direction of the face material I2a. On this account the backing layer I6 can be readily stripped from the face strip I2a without danger of the fibres or a layer of the adhesive coated surface of said face strip adhering to the backing layer.

In Figs. 5 to 8 the invention is illustrated as applied to a label or tag strip IIIB. As here shown, said strip comprises a face layer of paper or other material suitable for forming labels, tags or other adhesive coated tickets.V As here shown, the labels L provided in edge to edge relation as parts of a continuous facing strip I2b of paper or other suitable sheet material are mounted on the backing strip I i. Said face strip I2b is provided with transversely extending lines ofscoring 20 to facilitate the detachment of the labels or tags individually from the strip. As shown in Fig. 'I the strip I2b is provided with a coating Mb of pressure-sensitive adhesive corresponding to the surface coating I4 and Ila of pressure-sensitive adhesive provided on the face strips I2 `and Ila o1' the materials illustrated in Figs. 1 and 3, respectively. As shown in Fig. 6 one or more labels can be readily detached from the backing or mounting strip I6, a. detached label free from the backing strip being shown in Fig. 8.

From the above, it will be apparent that the adhesive coated strip material, whether of cloth, paper or other sheet material, is provided with a backing or protective layer which is associated with the face strip or web in such manner as to result in the elimination of the objections to the prior art material. It will be understood that the bias cut fabric can be laminated with wide face fabrics and thereafter the narrow ware described above can be produced by slitting the laminated material along transversely spaced longitudinally extending lines. It will be observed that the adhesive coated material pro vided with the backing or protective strip can be provided in any desired length and wound in, a roll on a spool or in any other way. The adhesive coated sheet material has a wide variety of uses such as for example for striping, packaging, dress and other costume trimming, shelf edgings, wall decorations as coverings for Venetian blind tapes, etc., and numerous other uses.

While we have shown and described the preferred embodiment of the invention and the application of the latter to narrow fabrics or narrow ware comprising various sheet materials, it

will be understood that the principle of the nvention may be embodied otherwise than as here shown and that the invention may be applied to various adhesive coated materials other than those herein specically mentioned. Accordingly, we do not wish to be limited to the invention as herein shown or described, except as may be required by the scope of the appended claim, and it will be understood further that the enumerated uses are by no means exhaustive of the uses to which the adhesive coated materials of the present invention can be put.

Having thus described our invention, what We claim and desire to secure by Letters Patent is:

A length of sheet material comprising a face strip or web of brous material having a surface thereof coated with a. pressure-sensitive adhesive, and a backing strip or web of woven sheet material removably attached to said face strip on said pressure-sensitive coated surface thereof in direct surface to surface contact therewith, said backing strip strip or web having cut side edges and comprising a layer of bias cut open mesh woven fabric all of the threads of which are arranged obliquely to the longitudinal extent of said strip of face fabric, said backing and face strips being substantially coextensive in length and width.

MARTIN SAVADA. WILLIAM HOROWITZ.

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