Polymeric bags with easy access features attached to the bags without adhesives
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B65D-033/00
B65D-033/16
B65D-030/00
B32B-005/02
B32B-027/12
B32B-027/32
B65D-033/25
출원번호
US-0051965
(2013-10-11)
등록번호
US-9731868
(2017-08-15)
발명자
/ 주소
Bazbaz, Jacobo
출원인 / 주소
Polytex Fibers Corporation
대리인 / 주소
Vinson & Elkins LLP
인용정보
피인용 횟수 :
0인용 특허 :
65
초록▼
A woven laminated plastic bag having an easy access or re-sealable feature and methods for making the same are provided. In certain aspects the easy access or re-sealable feature is attached to the bag without the use of an adhesive. In various aspects the bag can be fabricated from woven polypropyl
A woven laminated plastic bag having an easy access or re-sealable feature and methods for making the same are provided. In certain aspects the easy access or re-sealable feature is attached to the bag without the use of an adhesive. In various aspects the bag can be fabricated from woven polypropylene and/or polyethylene layer which can be laminated with a film layer, can form a pinch bottom bag, and can have one or both sides include graphics and/or printing. The bag in one embodiment can also provide a top end and/or a bottom end either or both of which provide one or more discrete areas which may each contain discrete graphics and/or printing.
대표청구항▼
1. A bag comprising a front wall, a back wall, an interior surface, an exterior surface, a top end, a bottom end, each of the front wall and back wall having an interior surface, an exterior surface, a top end and a bottom end, and each of the front wall and the back wall comprising a laminate, wher
1. A bag comprising a front wall, a back wall, an interior surface, an exterior surface, a top end, a bottom end, each of the front wall and back wall having an interior surface, an exterior surface, a top end and a bottom end, and each of the front wall and the back wall comprising a laminate, wherein the laminate comprises a first layer, second layer, and a third layer, wherein the first layer comprises woven polymer strips comprising oriented polypropylene, the second layer comprises a polymer film comprising oriented polypropylene, and the third layer comprises a polymer film comprising polypropylene, with the second layer laminated to the first layer by the third layer, and wherein the bag comprises an easy open feature located at or near either the top end or bottom end of the bag, and wherein at least a portion of the exterior surfaces of the top or bottom end of the front wall and the back wall comprises polypropylene and wherein at least a portion of the easy open feature comprises polyproylene, and wherein at least the portion of the easy open feature which comprises polypropylene and at least the portion of the exterior surfaces of the front wall and the back wall of the bag which comprises polypropylene form a seal which comprises a fused portion of the exterior surfaces, the easy open feature, or both. 2. The bag according to claim 1 wherein said seal extends the width of the bag. 3. The bag according to claim 2, wherein the easy open feature comprises a re-sealable feature having a sliding guide member. 4. The bag according to claim 1, wherein the first layer further comprises high density polyethylene, low density polyethylene, polyester, or any combination thereof. 5. The bag according to claim 1, wherein at least a portion of the second layer comprises a printed area thereon. 6. The bag according to claim 1, wherein the second layer further comprises polyethylene, polyethylene terephthalate, polyamide, or any combination thereof or paper. 7. The bag according to claim 1, wherein the second layer further comprises biaxially-oriented polypropylene, oriented polyethylene, biaxially-oriented polyethylene, oriented polyethylene terephthalate, biaxially-oriented polyethylene terephthalate, oriented polyamide, biaxially-oriented polyamide, coated paper or any combination thereof. 8. The bag according to claim 1, wherein at least a portion of a single fold of the bottom end of the front wall and the rear wall of the bag is sealed to the outer surface of the front wall of the bag. 9. The bag according to claim 8, wherein the bottom end of the bag is sealed using an adhesive sealing, heat sealing, adhesive lamination, extrusion lamination, stitching, ultrasonic energy, pressure, tape, or any combination thereof. 10. The bag according to claim 1, wherein at least a portion of a double fold of the bottom end of the front wall and the rear wall of the bag is sealed to the outer surface of the front wall of the bag. 11. The bag according to claim 1, wherein at least a portion of the bottom end of the rear wall projects further than the bottom end of the front wall. 12. The bag according to claim 11, wherein the portion of the bottom end of the rear wall that projects further than the bottom end of the front wall is sealed to the outer surface of the bottom end of the front wall. 13. The bag according to claim 1, wherein the bag further comprises a first side wall having an interior surface, an exterior surface, a top end and a bottom end, and a second side wall having an interior surface, an exterior surface, a top end and a bottom end, wherein the first side wall and the second side wall further comprise gussets. 14. The bag according to claim 13, wherein at least a portion of the bottom end of the rear wall projects further than the bottom end of the first side wall, the bottom end of the second side wall, and the bottom end of the front wall. 15. The bag according to claim 14, wherein the portion of the bottom end of the rear wall that projects further than the bottom end of the first side wall, the bottom end of the second side wall, and the bottom end of the front wall is sealed to the outer surface of the bottom end of the front wall. 16. The bag according to claim 13, wherein at least a portion of the bottom end of the rear wall projects further than the bottom end of the first side wall and the bottom end of the second side wall, and the bottom end of the first side wall and the bottom end of the second side wall project further than the bottom end of the front wall, and wherein the portion of the bottom end of the rear wall that projects further than the bottom end of the first side wall and the bottom end of the second side wall, and the portion of the bottom end of the first side wall and the bottom end of the second side wall that project further than the bottom end of the front wall are sealed to the outer surface of the bottom end of the front wall. 17. The bag according to claim 16, wherein at least a portion of the top end of the front wall projects further than the top end of the first side wall and the top end of the second side wall, and the top end of the first side wall and the top end of the second side wall project further than the top end of the rear wall. 18. The bag according to claim 1, wherein the top end and the bottom end of the bag are sealed, and wherein the bag comprises at least ten pounds by weight of a filling material. 19. The bag according to claim 1, wherein the third layer further comprises high density polyethylene, low density polyethylene, polyester, or any combination thereof. 20. The bag according to claim 1, wherein the third layer further comprises polyethylene, polyethylene terephthalate, polyamide, or any combination thereof. 21. The bag according to claim 1 wherein the bag comprises a pinch cut bag and wherein at least portions of the exterior surfaces of each of the front wall and the back wall comprise a plurality of discrete areas further comprising printing thereon. 22. The bag according to claim 1 wherein a portion of the front wall and a portion of the back wall combine to form a discrete portion of the bag located at or near either the top end or the bottom end, wherein the discrete portion of the bag comprises printing thereon. 23. The bag according to claim 22 wherein at least a portion of the front wall or the back wall projects beyond a corresponding portion of the other, thereby defining a pinch bottom bag at least the top end or the bottom end of the bag. 24. A bag comprising a front wall, a back wall, an interior surface, an exterior surface, a top end, a bottom end, each of the front wall and back wall having an interior surface, an exterior surface, a top end and a bottom end, and each of the front wall and back wall having a first layer, a second layer, and a third layer, wherein the first layer comprises woven polymer strips comprising polypropylene, the second layer comprises an oriented polymer film comprising polypropylene, and the third layer comprises a film comprising polypropylene, with the second layer attached to the first layer by the third layer, and wherein the bag comprises an easy access feature comprising a resealable feature located at or near either the top end or bottom end of the bag, wherein at least a portion of the exterior surfaces of the top or bottom end of the front wall and the back wall comprise polypropylene and wherein at least a portion of the easy access feature comprises polypropylene, and wherein the portion of the easy access feature which comprises polypropylene is sealed to the portion of the exterior surfaces of the top or bottom end of the front wall and the back wall of the bag without the use of an adhesive. 25. A bag comprising a front wall, a back wall, a first side wall, a second side wall, an interior surface, an exterior surface, a top end, a bottom end, the front wall, back wall, first side wall and second side wall each having an interior surface, an exterior surface, a top end and a bottom end, and comprising a laminate consisting essentially of a first layer, a second layer, a third layer, wherein the first layer comprises woven polymer strips comprising polypropylene, the second layer comprises a polymer film comprising polypropylene, and third layer comprises a film comprising polypropylene, wherein the second layer is laminated to the first layer by the third layer, and wherein the bag comprises an easy access feature comprising a resealable feature having a sliding guide member and at least two opposing flaps, wherein the easy access feature is located at the top end or bottom end of the bag, and wherein the easy access feature comprises polypropylene and at least a portion of a first of the opposing flaps is sealed to a portion of the exterior surface of the second layer of the front wall of the bag, and at least a portion of a second of the opposing flaps is sealed to a portion of the exterior surface of the second layer of the back wall of the bag, without the use of an adhesive. 26. A bag comprising a front wall, a back wall, an interior surface, an exterior surface, a first end, a second end, each of the front wall and back wall having an interior surface, an exterior surface, a top end and a bottom end, and each of the front wall and the back wall comprise a laminate, wherein the laminate comprises a first layer, a second layer, and a third layer, wherein the first layer comprises woven polymer strips comprising oriented polyethylene, the second layer comprises a polymer film comprising oriented polyethylene, and the third layer comprises a polymer film comprising polyethylene, with the second layer laminated to the first layer by the third layer, and wherein the bag comprises an easy open feature located at or near the first end of the bag, and wherein at least a portion of the exterior surfaces of the first end of the front wall and the back wall comprises polyethylene and wherein at least a portion of the easy open feature comprises polyethylene, and wherein at least the portion of the easy open feature which comprises polyethylene and at least the portion of the exterior surfaces of the front wall and the back wall of the bag which comprises polyethylene form a seal which comprises a fused portion of the exterior surfaces, the easy open feature, or both. 27. The bag according to claim 26 wherein the easy open feature comprises a re-sealable feature having a sliding guide member. 28. The bag according to claim 26 wherein said seal extends the width of the bag. 29. A bag comprising a front wall, a back wall, an interior surface, an exterior surface, a first end, a second end, each of the front wall and back wall having an interior surface, an exterior surface, a first end and a second end, and each of the front wall and back wall having at least a first layer and a second layer, wherein the first layer comprises woven polymer strips consisting essentially of polyethylene and the second layer comprises an oriented polymer film consisting essentially of polyethylene, wherein the second layer is attached to the first layer, and wherein the bag comprises an easy access feature comprising a resealable feature located at the first end of the bag, wherein at least a portion of the exterior surfaces of the first end of the front wall and the back wall consist essentially of polyethylene and wherein at least a portion of the easy access feature consists essentially of polyethylene, and wherein the portion of the easy access feature which consists essentially of polyethylene forms a seal with the portion of the exterior surfaces of the first end of the front wall and the back wall of the bag without the use of an adhesive. 30. The bag according to claim 29 wherein the easy open feature comprises a re-sealable feature having a sliding guide member. 31. The bag according to claim 29 wherein said seal extends the width of the bag.
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