Woven plastic bags with angled and/or radial cuts
A woven plastic bag having features that further prevent leakage of contents out of the bag, or infestation of organisms into the contents of the bag is provided. In various aspects the bag can be fabricated from a woven polymer layer and a film layer, can form a pinch bottom bag, and can have one or both sides include graphics and/or printing. The bag can also provide a top end and/or a bottom end either or both of which provide a discrete area which may contain discrete graphics and/or printing. The bag can have an end with a step cut configuration, wherein the step cut configuration includes one or more angled and/or radial cuts between separations.
1. A bag comprising:
a front wall comprising a first end and a second end and a first side and a second side;
a back wall comprising a first end and a second end and a first side and a second side; and
a first side wall and a second side wall, wherein the first side wall comprises a first front side wall and a first back side wall that connect the first side of the front wall to the first side of the back wall and the second side wall comprises a second front side wall and a second back side wall that connect the second side of the front wall to the second side of the back wall, and wherein the first side wall and the second side wall each comprise a first end, a second end, a front side wall portion and a back side wall portion;
wherein each of the front wall, the back wall, the first side wall, and the second side wall comprise (i) a first layer comprising a woven polymer and (ii) a second layer comprising a polymer film;
wherein the first end of the bag comprises a step cut configuration formed from the first end of each of the first front side wall and the second front side wall extending farther than the first end of the front wall, the first end of each of the first back side wall and the second back side wall extending farther than the first end of each of the first front side wall and the second front side wall, and the first end of the back wall extending farther than the first end of each of the first back side wall and the second back side wall, the step cut configuration having a plurality of connections, each connection of the plurality of connections being formed to extend between and to connect one of a first edge of the back wall, the first back side wall, the first front side wall, and the front wall with a respective second edge of the back wall, the second back side wall, the second front side wall, and the front wall;
wherein the plurality of connections define a plurality of curved connections and an angled connection therebetween or a plurality of angled connections and a curved connection therebetween; and
wherein each angled connection is linear and between 15° and 75° with respect to the first end of the front wall.
2. The bag according to claim 1 , wherein a shape of each angled connection is different than a shape of each curved connection.
3. The bag according to claim 1 , wherein the first layer and the second layer each comprise polyethylene or polypropylene.
4. The bag according to claim 1 , wherein each angled connection is between 30° and 60° with respect to the first end of the front wall.
5. The bag according to claim 1 , wherein the second end of the bag comprises a second step cut configuration formed from the second end of the front wall extending farther than the second end of each of the first front side wall and the second front side wall, the second end of each of the first front side wall and the second front side wall extending farther than the second end of each of the first back side wall and the second back side wall, and the second end of each of the first back side wall and the second back side wall extending farther than the second end of the back wall, the second step cut configuration having a plurality of second connections, each connection of the plurality of connections being formed to extend between and to connect one of a third edge of the back wall, the first back side wall, the first front side wall, and the front wall with a respective fourth edge of the portions of the back wall, the second back side wall, the second front side wall, and the front wall; and
wherein the plurality of second connections define a plurality of curved connections and an angled connection therebetween or a plurality of angled connections and a curved connection therebetween.
6. The bag according to claim 1 , wherein each curved connection comprises a portion of an elliptical, parabolic, or hyperbolic curve.
7. A bag comprising:
a front wall, a back wall, a first side wall, and a second side wall, each comprising a first layer comprising a woven polymer and a second layer comprising a polymer film, and each further comprising a first end and a second end;
wherein each of the first side wall and the second side wall further comprise a gusset having a fold line extending from the second end to the first end dividing the first side wall into a first front side wall and a first back side wall and dividing the second side wall into a second front side wall and a second back side wall; and
wherein the first end of the front wall, the back wall, and the first side wall define a step cut configuration, wherein the step cut configuration is formed from an extended portion of the back wall proximal the first back side wall extending farther than an extended portion of the first back side wall, the extended portion of the back wall comprising a first edge and a second edge; the extended portion of the first back side wall extending farther than an extended portion of the first front side wall, the extended portion of the first back side wall comprising a first edge and a second edge; and the extended portion of the first front side wall extending farther than a first edge of the front wall proximal the first front side wall, the extended portion of the first front side wall comprising a first edge and a second edge;
wherein a first curved connection defines a first curve extending from the first edge of the back wall to the second edge of the back wall, a first angular connection defines a first angle extending from the second edge of the back wall to the first edge of the first back side wall, a second curved connection defines a second curve extending from the first edge of the first back side wall to the second edge of the first back side wall, a second angular connection defines a second angle extending from the second edge of the first back side wall to the first edge of the first front side wall, a third curved connection defines a third curve extending from the first edge of the first front side wall to the second edge of the first front side wall, a third angular connection defines a third angle extending from the second edge of the first front side wall to the first edge of the front wall; and
wherein each of the first angle, the second angle, and the third angle defines an angle between 15° and 75° with respect to the first end of the front wall.
8. The bag according to claim 7 , wherein each of the first angle, the second angle, and the third angle defines an angle between 30° and 60° with respect to the first end of the front wall.
9. The bag according to claim 7 , wherein each of the first curve, the second curve, and the third curve comprises a portion of an elliptical, parabolic, or hyperbolic curve.
10. The bag according to claim 7 , wherein the bag comprises an easy open or easy access feature.
11. The bag according to claim 7 , wherein said first layer comprises polypropylene, high density polyethylene, low density polyethylene, polyester, or any combination thereof.
12. The bag according to claim 11 , wherein the second layer comprises oriented polypropylene, biaxially-oriented polypropylene, oriented polyethylene, biaxially-oriented polyethylene, oriented polyethylene terephthalate, biaxially-oriented polyethylene terephthalate, oriented polyamide, biaxially-oriented polyamide, or any combination thereof.
13. The bag according to claim 7 , wherein the first layer and the second layer comprise polyethylene.
14. The bag according to claim 7 , wherein the first layer and the second layer comprise polypropylene.
15. A bag comprising:
a front wall comprising a first end, a second end, a first edge, and a second edge adjacent to the first edge;
a back wall comprising a first end and a second end; and
a first side wall and a second side wall on opposite sides of the front wall and back wall and connecting the front wall to the back wall, forming a bag with a first end and a second end, each of the first side wall and the second side wall comprising a gusset with a central fold line extending from the first end to the second end of the respective side walls and dividing the first side wall into a first front side wall and a first back side wall and dividing the second side wall into a second front side wall and a second back side wall, and each of the first front side wall, the first back side wall, the second front side wall, and the second back side wall comprising a first edge and a second edge adjacent to the first edge;
wherein each of the front wall, back wall, first side wall and second side wall comprise (i) a first layer comprising a woven polymer and (ii) a second layer laminated to the first layer, said second layer comprising a polymer film; and
wherein at least the first end of the bag comprises a step cut configuration comprising a portion of the front wall proximal the first front side wall extending farther than the first front side wall, a portion of the first front side wall extending farther than the first back side wall, and a portion of the first back side wall extending farther than a portion of the back wall proximal the first back side wall;
wherein the step cut configuration further comprises a plurality of connections, wherein one of the plurality of connections is arranged to connect and extend entirely between each of the first edge and the second edge of the front wall, the portion of the front wall proximal the first front side wall and the first front side wall, the first edge and the second edge of the first front side wall, the portion of the first front side wall and the first back side wall, the first edge and the second edge of the first back side wall, and the portion of the first back side wall and the portion of the back wall proximal the first back side wall;
wherein the plurality of connections define an alternation of curved connections and angled connections; and
wherein each of the angled connections is linear defines an angle of between 15° and 75° with respect to the first end of the front wall.
16. The bag according to claim 15 , wherein a connection of the plurality of connections arranged between the first front side wall and the first back side wall defines one of the angled connections.
17. The bag according to claim 15 , wherein all of the connections of the plurality of connections of the step cut configuration alternate between the angled connections and the curved connections.
18. The bag according to claim 15 , wherein:
the front wall further comprises a third edge adjacent to the first edge;
the first end of the bag further comprises a second step cut configuration comprising a portion of the front wall proximal the second front side wall extending farther than the second front side wall, a portion of the second front side wall extending farther than the second back side wall, and a portion of the second back side wall extending farther than a portion of the back wall proximal the second back side wall;
wherein the second step cut configuration further comprises a second plurality of connections, wherein one of the second plurality of connections is arranged to connect and extend entirely between each of the first edge and the third edge of the front wall, the portion of the front wall proximal the second front side wall and the second front side wall, the first edge and the second edge of the second front side wall, the portion of the second front side wall and the second back side wall, the first edge and the second edge of the second back side wall, and the portion of the second back side wall and the portion of the back wall proximal the second back side wall; and
wherein the second plurality of connections define an alternation of curved connections and angled connections.
19. The bag according to claim 15 , wherein each of the angled connections defines an angle between 30° and 60° with respect to the first end of the front wall.
20. The bag according to claim 15 , wherein each of the curved connections defines an elliptical, parabolic, or hyperbolic curve.
21. The bag according to claim 15 , wherein the first layer and the second layer comprise polyethylene.
22. The bag according to claim 15 , wherein the first layer and the second layer comprise polypropylene.