Leak-proofing gussets on multi-wall paper and woven polypropylene packages or bags
Reclosable gusseted packages or bags have improved resistance to leaking or spilling through the gussets by way of glue or adhesive applied in the gussets in the areas proximate to the reclosable zipper of the bag. This can be done by applying a glue smear to the interior and exterior of the gusset walls; applying glue dots between the exterior facing walls of the gussets; or by applying the glue smear between the exterior facing walls of the gussets.
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1. Field of the Invention
The present invention relates to improving the leak-proof or spill-resistant quality of gussets in reclosable packages, particularly those made with multi-wall paper or woven polypropylene.
2. Description of the Prior Art
In the prior art of reclosable packages or bags, it is well known to use gussets between the front and rear walls to increase the capacity of the package or bag with only a small increase in the packaging material, such as multi-wall paper or polypropylene.
However, the use of gussets can increase the tendency for the contents of the reclosable package or bag to leak from the gusset area proximate to the intersection of the package or bag walls and the zipper. More specifically, the contents can travel up the center of the package or bag, between the zipper profiles and out the gusset.
OBJECTS AND SUMMARY OF THE INVENTIONIt is therefore an object of the present invention to eliminate or reduce the leakage of contents of a gusseted reclosable package or bag through the gussets proximate to the intersection of the zipper profiles and the package or bag walls.
This and other objects are attained by applying glue or adhesive to the walls of the package or bag within the gusset proximate to the zipper assembly, typically within the gusseted area which is between the zipper flanges.
Further objects and advantages of the invention will become apparent from the following description and claims, and from the accompanying drawings, wherein:
Referring now to the drawings in detail wherein like numerals indicate like elements throughout the several views, one sees that
As shown by the circuitous path indicated by the arrow in
As shown in
In a first alternative embodiment of the present invention, shown in
In a second alternative embodiment of the present invention, shown in
The resulting package or bag 100 has reduced leakage and can be filled, transported and used in the same way as similar packages or bags.
Thus the several aforementioned objects and advantages are most effectively attained. Although preferred embodiments of the invention have been disclosed and described in detail herein, it should be understood that this invention is in no sense limited thereby and its scope is to be determined by that of the appended claims.
Claims
1. A reclosable package or bag comprising:
- a first wall and a second wall;
- a first gusset formed between a first edge of the first wall and a first edge of the second wall;
- a second gusset formed between a second edge of the first wall and a second edge of the second wall;
- a mouth formed between a top edge of the first sheet and a top edge of the second sheet;
- a reclosable zipper secured to the first and second walls proximate the mouth; and
- glue or adhesive applied to the first gusset and to the second gusset to minimize leakage through the first and second gussets.
2. The reclosable package or bag of claim 1 wherein the glue or adhesive is applied to the first gusset and the second gusset in at least an area proximate to the reclosable zipper.
3. The reclosable package or bag of claim 2 wherein the first gusset and the second gusset each include a first gusset wall and a second gusset wall.
4. The reclosable package or bag of claim 3 wherein each first gusset wall and respective second gusset wall form an inwardly pointing V-shape.
5. The reclosable package or bag of claim 4 wherein the first gusset walls and the second gusset walls are formed of a same material as the first wall and the second wall.
6. The reclosable package or bag of claim 5 wherein the first gusset walls and the second gusset walls are formed integrally with the first wall and the second wall.
7. The reclosable package or bag of claim 4 wherein the glue or adhesive is applied onto an interior and an exterior of a portion of the first and second gusset walls.
8. The reclosable package or bag of claim 4 wherein the glue or adhesive is applied onto an exterior of a portion of the first and second gusset walls and interior of the first and second gusset walls is substantially free of the glue or adhesive.
9. The reclosable package or bag of claim 8 wherein the glue or adhesive is applied as a series of dots.
10. The reclosable package or bag of claim 1 wherein the reclosable zipper includes a first profile attached to the first wall, a second profile attached to the second wall, and a slider to interlock the first and second profiles when moved in a first direction and to separate the first and second profiles when moved in a second direction.
11. A reclosable package or bag comprising:
- a wall structure with a top mouth and a closed bottom;
- at least one gusset formed in the wall structure;
- a reclosable zipper secured to the wall structure proximate the mouth; and
- glue or adhesive applied to the at least one gusset to minimize leakage through the first and second gussets.
12. The reclosable package or bag of claim 11 wherein the glue or adhesive is applied to the at least one gusset in at least an area proximate to the reclosable zipper.
13. The reclosable package or bag of claim 12 wherein the at least one gusset includes a first gusset wall and a second gusset wall.
14. The reclosable package or bag of claim 13 wherein the first gusset wall and the second gusset wall form an inwardly pointing V-shape.
15. The reclosable package or bag of claim 14 wherein the first gusset wall and the second gusset wall are formed of a same material as the wall structure.
16. The reclosable package or bag of claim 15 wherein the first gusset wall and the second gusset wall are formed integrally with the wall structure.
17. The reclosable package or bag of claim 14 wherein the glue or adhesive is applied onto an interior and an exterior of a portion of the first and second gusset walls.
18. The reclosable package or bag of claim 14 wherein the glue or adhesive is applied onto an exterior of a portion of the first and second gusset walls and interior of the first and second gusset walls is substantially free of the glue or adhesive.
19. The reclosable package or bag of claim 18 wherein the glue or adhesive is applied as a series of dots.
20. The reclosable package or bag of claim 11 wherein the reclosable zipper includes a first profile and a second profile attached to the wall structure, and a slider to interlock the first and second profiles when moved in a first direction and to separate the first and second profiles when moved in a second direction.
Type: Application
Filed: May 7, 2007
Publication Date: Nov 13, 2008
Applicant:
Inventors: Charles Greco (Bardonia, NY), Rusty Koenigkramer (Nanuet, NY)
Application Number: 11/801,062