US20070221714A1 - Filled and sealed bag having an easy pour spout and method of making same - Google Patents

Abstract

An article of commerce comprising a bag containing a quantity of particulates. The bag includes a sidewall encircling a longitudinal axis and extending along the axis between a bottom closed end and a top closed end. The opposite sides of the sidewall are brought together to form the bottom closed and the top closed end. Both of the bottom and top closed ends extend acutely with respect to the axis such that the bag is parallelogram-shaped in a plane containing the axis and the bottom closed end and the top closed end.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS
• This application claims the benefit of U.S. Provisional Patent Application Ser. No. 60/783,141 for a FILLED AND SEALED BAG HAVING EASY POUR SPOUT AND METHOD OF MAKING SAME, filed on Mar. 16, 2006, which is hereby incorporated by reference in its entirety.
BACKGROUND OF THE INVENTION
• 1. Field of the Invention
• This invention relates to the packaging for particulate material such as ready-to-eat (“RTE”) cereal. More specifically, this invention is particularly useful in the form of a bag-in-a-box with a re-closable bag.
• 2. Description of Related Art
• The use of a bag and or of a cartons with liner bag for particulate products like RTE cereal is well known. Such cartons are usually formed from a blank of paperboard or similar material comprising sidewalls with top and bottom flaps. The liner is a plastic or coated paper bag which holds the particulate product. The liner can be filled and sealed before or after being placed inside the open carton. The flaps of the carton are then folded and sealed.
• Gaining access to the contents of such cartons involves breaking the seal between the top flaps of the carton and pulling open the sealed liner bag. As will be appreciated by anyone who has opened this type of bag, they do not always open neatly and many times can tear in ways that make resealing difficult. Difficult and incomplete sealing can lead to a loss of freshness of the product. RTE cereal. For example, the particulate has a low moisture content and readily absorbs moisture from the air, leading to a loss of crispness.
• Once opened, and as the contents are depleted, the liner bag and its contents slide and shift positions in the carton which can cause the opened portion of the liner to become misaligned with the box opening thereby hindering dispensing of product from the carton. This also causes product to drop between the carton and the liner.
SUMMARY OF THE INVENTION
• In summary, the invention is an article of commerce comprising a bag containing a quantity of particulates. The bag includes a sidewall encircling a longitudinal axis and extending along the axis between a bottom closed end and a top closed end. The opposite sides of the sidewall are brought together to form the bottom closed and the top closed end. Both of the bottom and top closed ends extend acutely with respect to the axis such that the bag is parallelogram-shaped in a plane containing the axis and the bottom closed end and the top closed end.
BRIEF DESCRIPTION OF THE DRAWINGS
• Advantages of the present invention will be readily appreciated as the same becomes better understood by reference to the following detailed description and the accompanying drawings that set forth an exemplary embodiment wherein:
• FIG. 1 is an exploded view of the exemplary embodiment of the invention;
• FIG. 2 is a top view of the exemplary embodiment of the invention;
• FIG. 3 is a perspective view of a bag according to the exemplary embodiment of the invention partially opened at a top end;
• FIG. 4 is a side view of the bag shown inFIG. 3 re-closed;
• FIG. 5 is a front view of the re-closed bag shown inFIG. 4;
• FIG. 6 is a schematic view of the bag showing dual seal zones; and
• FIG. 7 is a schematic view of a production line for making the bag.
DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENT
• The present invention provides a unique solution to the opening and closing problems encountered with traditional bags and particularly traditional bags in boxes. This unique solution is obtained at little or even no additional cost in equipment, material or labor.
• Referring now to the figures of the application, the exemplary embodiment of the invention includes abag10 containing a quantity ofparticulates12. A portion of thebag10 is cut-away inFIG. 1 to reveal the particles. In the exemplary embodiment of the invention, the particles are RTE cereal pieces. But in alternative embodiments of the invention, the particles can encompass large bulk packaged pieces as well as very small bulk packaged pieces. Examples of smaller fill materials include, but are not limited to, the following: agricultural products like seeds, rice, grains, vegetables, fruits; chemical products like fine chemicals, pharmaceuticals, raw chemicals, fertilizers; plastics like plastic resin pellets, plastic parts, rejected plastic parts, machined plastic parts; cereals and cereal products such as wheat; a variety of machined parts of all sorts; wood products like wood chips, landscaping material, peat moss, dirt, sand, gravel, rocks and cement. The present invention also finds utilization in bulk packaging of larger fill material including, but not limited to: prepared foods; partially processed foods like frozen fish, frozen chicken, other frozen meats and meat products; manufactured items like textiles, clothing, footwear; toys like plastic toys, plastic half parts, metallic parts, soft toys, stuffed animals, and other toys and toy products. All of these types of materials and similar bulk packaged materials are intended to be encompassed in the present specification and claims by this phrase.
• Thebag10 can be made of paper or plastic. Thebag10 can be made from any material now known or subsequently developed that is operable to contain particles.
• Thebag10 includes asidewall14 encircling alongitudinal axis16 and extending along theaxis16. Thesidewall14 can be continuous or can include seam, such as shown when comparingFIGS. 2 and 6.FIG. 6 shows aseam36. Thebag10 extends between a bottom closedend18 and a top closedend20.Opposite sides26,28 of thesidewall14 are brought together to form the bottom and top closedends18,20. Both of the bottom and top closedends18,20 extend acutely with respect to theaxis16 such that thebag10 is parallelogram-shaped in a plane containing the axis and the bottom closedend18 and the top closedend20. This plane is shown inFIG. 1, revealing the twoacute angles22 and24.
• The top closedend20 of theexemplary bag10 can be opened by separating theopposite sides26,28 of thesidewall14.FIG. 3 shows thebag10 partially opened. Thebag10 can be opened without tearing thesidewall14. As a result, thebag10 is re-closable.FIGS. 4 and 5 show two view of thebag10 in a re-closed condition.
• The structure of theexemplary bag10 results in a pour spout being defined when thetop end20 is opened. Theexemplary bag10 is also structured to enhance the control over which thetop end20 is opened. Specifically, the exemplarytop end20 is defined by dual seal zones. In other words, thetop end20 is variably sealed. As best shown schematically inFIG. 6, the top closedend20 extends transverse to the axis16 (shown inFIG. 1) between afirst end30 disposed relatively closer to the bottom closedend18 and asecond end32 disposed relatively further from the bottom closedend18. A first adhesive34 disposed between theopposite sides26,28 along a first portion of the topclosed end20. Asecond adhesive38 disposed between theopposite sides26,28 along a second portion of the topclosed end20. Thefirst adhesive34 defines a greater adhesiveness that the second adhesive38 such that the first portion requires a greater force to open than the second portion. In other words, an amount of separating force required to open the topclosed seal20 is different at the first and second ends30,32. Specifically, in the exemplary embodiment of the invention, the amount of separating force required to open the topclosed seal20 is greater at thesecond end32 than at thefirst end30.
• A bag according to the present invention can also be used with or without a box or carton. The exemplary article of commerce also includes acarton40 having asidewall42 andbottom wall44. Thesidewall42 can continuous or be formed with a seam. Thesidewall42 can be formed as a single piece (with or without a seam) or formed from a plurality of discrete pieces. Thesidewall42 encircles theaxis16 and extends along theaxis16 between atop end46 and abottom end48. Thebottom wall44 closes thebottom end48 to cooperate with thesidewall42 to define a substantially enclosed cavity. Thebag10 is disposed in the cavity. Thecarton40 is further defined as being substantially rectangular in a plane containing theaxis16 and the bottom closedend18 and the topclosed end20. Thecarton40 can be formed from plastic or paperboard. Thecarton40 can include integral closing structures or features, such as flaps, or can be engaged by a separate lid or cover.
• Indicia may be included on the pouring spout or carton to provide instructions for opening.
• FIG. 7 schematically shows a production line50 for forming theexemplary bag10. In an exemplary method for making thebag10, aweb52 of folded material is drawn off of aroll54 in a first direction represented byarrow56 along the production line50. A sealingbar58 is disposed along the production line50 at anacute angle60 to thefirst direction56. A cuttingbar62 is also disposed along the production line50 at anacute angle64 to thefirst direction56. The cuttingbar62 can be a dual purpose device, cutting and sealing theweb52 to form thebag10. Likewise, thebar58 can be a dual purpose device. Thebars58,62 are space from one another along the production line50. The production line50 is flexible in that, if rectangular bags are desired, thebars58,62 can be rotated to be perpendicular to thedirection56.
• While the invention has been described with reference to an exemplary embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed as the best mode contemplated for carrying out this invention, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims (10)

1. An article of commerce comprising:

a bag containing a quantity of particulates, wherein said bag includes a sidewall encircling a longitudinal axis and extending along said axis between a bottom closed end wherein opposite sides of said sidewall are brought together and a top closed end wherein opposite sides of said sidewall are brought together, and wherein both of said bottom and top closed ends extend acutely with respect to said axis such that said bag is parallelogram-shaped in a plane containing said axis and said bottom closed end and said top closed end.

2. The article of commerce ofclaim 1 said top closed end is operable to open by separating said opposite sides of said sidewall apart without tearing said sidewall such that said bag is re-closable.

3. The article of commerce ofclaim 1 further comprising:

a first adhesive disposed between said opposite sides along a first portion of said top closed end; and

a second adhesive disposed between said opposite sides along a second portion of said top closed end, wherein said first adhesive defines a greater adhesiveness that said second adhesive such that said first portion requires a greater force to open than said second portion.

4. The article of commerce ofclaim 1 wherein:

said top closed end is further defined extending transverse to said axis between a first end disposed relatively closer to said bottom closed end and a second end disposed relatively further from said bottom closed end; and

said top closed end is further defined as variably sealed such that an amount of separating force required to open said top closed seal is different at said first and second ends.

5. The article of commerce ofclaim 4 wherein the amount of separating force required to open said top closed seal is greater at said first end than at said second end.

6. The article of commerce ofclaim 1 further comprising:

a carton having a sidewall and bottom wall wherein said sidewall encircles said axis and extends along said axis between a top end and a bottom end and wherein said bottom wall closes said bottom end to cooperate with said sidewall to define a substantially enclosed cavity, said bag being disposed in said cavity.

7. The article of commerce ofclaim 6 wherein said carton is further defined as being substantially rectangular in a plane containing said axis and said bottom closed end and said top closed end.

8. The article of commerce ofclaim 6 wherein said carton is further defined as being formed of one of plastic and paperboard.

9. A method for making said bag ofclaim 1 comprising the steps of:

drawing a web of folded material off of a roll in a first direction along a production line;

disposing a sealing bar along the production line at an acute angle to the first direction; and

disposing a cutting bar along the production line at an acute angle to the first direction.

10. The method ofclaim 9 further comprising the step of:

spacing the sealing bar and the cutting bar from one another along the production line.

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