Patent Publication Number: US-11027888-B2

Title: Easy open plastic bags

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation of U.S. patent application Ser. No. 13/682,289 filed on Nov. 20, 2012, which is incorporated herein by reference in its entirety, and which is a continuation-in-part of U.S. patent application Ser. No. 13/372,211, filed on Feb. 13, 2012, which is incorporated herein by reference in its entirety. 
    
    
     BACKGROUND 
     Field of the Disclosure 
     The present disclosure relates to plastic bags with improved opening features. 
     Description of the Related Art 
     Conventional plastic bags of a wide variety of size and shape are used in various situations. Bulk materials, such as flour, sugar, rice, seed, animal feed, chemicals, powdered materials or the like, for example, typically have been packaged in woven plastic bags in the past. Pet food, bird seed and other products sold in retail stores typically have not been packaged in conventional woven plastic bags. Among other reasons for this, woven plastic bags were considered too rudimentary to be printed with high end graphics suitable for consumer type of packaging. In addition, the high speed requirements in the filling and packaging operations limited the use of the woven bags in these applications. 
     Laminated woven sacks (LWS) were developed using a woven polypropylene structure laminated to a bi-oriented polypropylene film (BOPP) that can be reverse printed with high end graphics suitable for consumer type of packaging. The LWS provides a stronger, more attractive bag than the more conventional multiwall bags used for that purpose over the last 20 years. Due to their tough strong structure, conventional LWS bags are typically sewn shut on both ends. These LWS recently met with success and have been successfully substituted for the conventional multiwall paper bags used in the pet food industry for many years. 
     One major drawback of the sewn LWS has been the closing of the bags at high speed filling lines, such as those for filling such bags with pet food. Experience has shown that sewing production lines are typically slower than the filling of the multiwall pinch bottom bags. Additionally, the sewn bags do not provide an aesthetically pleasing and useful clean display on the ends of the bags, thus making it difficult for consumers to identify or find a desired brand quickly when the bags are displayed on the shelves at the point of sale, such as when they are stacked on top of one another. In addition, the sewn ends required puncturing the plastic bags and thus result in a bag that is not sealed, leading to somewhat reduced shelf-life and possible infestation of the contents of the bag. Thus, there is a need for pinch laminated woven sacks that overcome these drawbacks in the filling and closing operations while allowing an attractive graphic display of the bags&#39; ends at the retail outlet and also providing a strong, durable bag which remains sealed. 
     One major disadvantage of the newly developed pinch bottom laminated woven sack, however, is that it does not include an easy open feature that allows the consumer or purchaser to quickly and easily open the bag without the use of scissors or knives. There is a need for such a pinch bottom laminated woven sack which is easy to open without the use of scissors, knives or other such instruments, and also does not require the use of excessive force. 
     Woven plastic bags have been used and are conventional for certain applications. An example of a conventional woven plastic bag is provided in U.S. Pat. No. 4,373,979 (“the &#39;979 patent”), issued on Feb. 15, 1983. The &#39;979 patent describes the use of woven strips of highly longitudinally-oriented, high-density polyethylene or polypropylene in a bag construction in which the bag is formed from a seamed tube made of the woven plastic material. The seamed tube has gussets on either side and, when a portion is cut from the rest of the tube, a bag having two open, unsealed ends is provided. The &#39;979 patent describes the use of ultrasonic spot welds to seal portions of a bag made of such woven plastic strips, as opposed to sewing the seams of a bag or using a hot melt adhesive to seal the gusset forming pleat. The &#39;979 patent is hereby incorporated by reference herein. The &#39;979 patent purports to be an improvement for sealing a plastic bag. As noted in the &#39;979 patent, sewing one end tends to take longer, thus adding time to the manufacturing process. In addition, the sewn ends in a conventional bag tend to be a weak portion of the bag, and a likely location for rips, tearing, and subsequent loss of contents during storing, shipping and handling. In addition, such bags may not provide sufficient protection from infestation from vermin and/or insects. 
     Another example of plastic bags is disclosed in U.S. Patent Application Publication Number US 2010/0029455 A1 (“the &#39;455 publication”), published on Feb. 4, 2010, which describes production of web sections from a flexible web material that is provided with tear-off lines produced by laser beam processing at the distance of the length of the web sections to be formed. The tear-off lines weaken the flexible web material, but do not result in complete separation of the web sections from the web material, which occurs upon tearing the flexible web material. The &#39;455 publication is incorporated by reference herein. 
     More recently, some types of plastic bags have provided improvements in sealing the ends of the bags. For example, in U.S. Pat. No. 6,800,051 B2 (“the &#39;051 patent”), issued on Oct. 5, 2004, a process for sealing side fold sacks made of plastic film is described. According to the &#39;051 patent, a web of plastic tubular film is cut to provide a staggered detachment along a perforation so that one wall (e.g., the front wall) projects beyond the opposing wall (e.g., the back wall). The projecting portion of the first wall is then folded over and sealed to the opposing wall by means of a plastic adhesive such as a polyurethane adhesive or hot melt. The &#39;051 patent is hereby incorporated by reference herein. However, such bags involve plastic films, not woven plastic materials, and therefore are unable to handle the weight loads of conventional bulk bags made of paper and other materials. Such bags are useful for only certain lightweight contents, such as bread. 
     There are a variety of conventional ways of providing for reusable openings in bags. For example, U.S. Pat. No. 6,478,465 B1 (“the &#39;465 patent”), issued Nov. 12, 2002, describes a peelable opening in a multiwall, pinched bottom open mouth bag construction. The &#39;465 patent also describes the use of an adhesive layer that can be used so that the bag opening is reclosable. The &#39;465 patent is hereby incorporated by reference herein. 
     In other types of conventional plastic bags, such as those used in retail and grocery stores, the use of weakened portion provided by one or more perforations in the plastic bag wall is known. A number of approaches have been taken in connection with such bags, including those shown in U.S. Pat. No. 5,188,235 (the &#39;235 patent), issued Feb. 23, 1993, as well as in U.S. Published Patent Application No. 2005/0087542 A1 (the &#39;542 application), published Apr. 28, 2005, U.S. Pat. No. 5,979,655 (the &#39;655 patent), issued Nov. 9, 1999, and U.S. Published Patent Application No. 2006/0072856 (the &#39;856 application), issued Apr. 6, 2006. However, none of these bags are woven bags, let alone bags with multiple layers. The &#39;235 patent, the &#39;655 patent, the &#39;542 application, and the &#39;856 application are hereby incorporated by reference. 
     Typically woven and non-woven bags are sealed with a single or double fold at each end with tape over the single or double fold, stitching at both ends, or a zipper at one end and a single or double fold at the other end. However, opening woven and certain non-woven bags has proven difficult, due to the strength of the bag. Therefore, what is needed are woven and non-woven bags that are easier to open, that do not add much to the cost or time to manufacture, and are not susceptible to inadvertent tearing, punctures, breaking, or the like. 
     SUMMARY 
     The present disclosure provides woven and non-woven plastic bags comprising an easy open feature, which makes the presently disclosed woven and non-woven plastic bags easier to open than conventional woven and non-woven plastic bags. 
     The present disclosure provides a bag comprising a front wall, a back wall, an interior surface, an exterior surface, a top end, a bottom end, a first layer and a second layer, each of the front wall and back wall having an interior surface, an exterior surface, a top end and a bottom end, wherein the first layer comprises a polymer and the second layer comprises a polymer attached to the first layer, and wherein the bag comprises an easy open feature located on the front wall of the bag, the back wall of the bag, or a combination thereof. The first layer can comprise a woven polymer, including, but not limited to, polypropylene, high density polyethylene, low density polyethylene, polyester, or any combination thereof. The second layer can comprise a polymeric film, including, but not limited to, polypropylene, polyethylene, polyethylene terephthalate, polyamide, or any combination thereof, or paper or coated paper portion suitable for having high quality print graphics thereon, or a combination of a polymeric film and a paper portion suitable for having high quality print graphics thereon. The second layer can alternatively comprise an oriented polymeric film, including, but not limited to, 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. The first layer and second layer can be laminated together. Thus in certain aspects the first layer can consist or consist essentially of a woven polymer and the second layer can consist or consist essentially of a film. 
     In general the easy open feature comprises a weakened area. The weakened area can comprise a cut having a first end and a second end, wherein the cut penetrates through at least a portion of the front wall of the bag, the back wall of the bag, or a combination thereof. In certain aspects the cut can comprise a line or an open shape, including, but not limited to, a carat, a semi-circle, an open square, or an open rectangle. The weakened area can further comprise a plurality of perforations extending from the first end or the second end of the cut, wherein the plurality of perforations penetrate through at least a portion of the front wall of the bag, the back wall of the bag, or a combination thereof. In various aspects the plurality of perforations extends about 5%, about 10%, about 15%, about 20%, about 25%, about 30%, about 35%, about 40%, about 45%, about 50%, about 55%, about 60%, about 65%, about 70%, about 75%, about 80%, about 85%, about 90%, about 95% or about 99% of a distance across the front wall of the bag, the back wall of the bag, or a combination thereof. In certain embodiments the plurality of perforations extends from the first end of the cut to the second end of the cut. The plurality of perforations can extend around one or more walls of the bag, or can alternatively extend to form a shape, including, but not limited to, a circle, a triangle, a square or a rectangle. The shape can be comprised on a single wall of the bag, or can extend over contiguous walls of the bag. Further, a plurality of perforations can extend from the first end of the cut and a plurality of perforations can extend from the second end of the cut. The plurality of perforations can extend from the first end of the cut and the second end of the cut about 5%, about 10%, about 15%, about 20%, about 25%, about 30%, about 35%, about 40%, about 45%, about 50%, about 55%, about 60%, about 65%, about 70%, about 75%, about 80%, about 85%, about 90%, about 95% or about 99% of a distance across the front wall of the bag, the back wall of the bag, or a combination thereof, or can extend to form a shape, including, but not limited to, a circle, a triangle, a square or a rectangle. Once again, the shape can be comprised on a single wall of the bag, or can extend over contiguous walls of the bag. 
     The weakened area can also comprise a first cut having a first end and a second end and a second cut having a first end and a second end. In particular embodiments the first cut and the second cut intersect, for example comprising an “X” shape, or the first cut and the second cut comprise parallel lines. The weakened area can additionally comprise a third cut, and the first cut, the second cut and the third cut are connected, for example wherein the first cut, the second cut and the third cut comprise an “H” shape (or a sideways “H” shape when viewing the bag with the top end of the bag up). The weakened area can further comprise a plurality of perforations extending from the first end and the second end of the first cut, and a plurality of perforations extending from the first end and the second end of the second cut, wherein the plurality of perforations penetrate through at least a portion of the front wall of the bag, the back wall of the bag, or a combination thereof. The plurality of perforations extending from the first end and the second end of the first cut and the plurality of perforations extending from the first end and the second end of the second cut can comprise parallel lines or lines that intersect. In various embodiments the plurality of perforations can extending from the first end and the second end of the first cut and the first end and the second end of the second cut about 5%, about 10%, about 15%, about 20%, about 25%, about 30%, about 35%, about 40%, about 45%, about 50%, about 55%, about 60%, about 65%, about 70%, about 75%, about 80%, about 85%, about 90%, about 95% or about 99% of a distance across the front wall of the bag, the back wall of the bag, or a combination thereof. 
     The weakened area can alternatively comprise a plurality of perforations that penetrate through at least a portion of the front wall of the bag, the back wall of the bag, or a combination thereof. The plurality of perforations can form a line that extends about 5%, about 10%, about 15%, about 20%, about 25%, about 30%, about 35%, about 40%, about 45%, about 50%, about 55%, about 60%, about 65%, about 70%, about 75%, about 80%, about 85%, about 90%, about 95% or about 99% of a distance across the front wall of the bag, the back wall of the bag, or a combination thereof. The plurality of perforations can also form a shape, including, but not limited to, a circle, an oval, a triangle, a square or a rectangle. In other aspects, the plurality of perforations forms a first line and a second line, which can be about parallel and extend about 5%, about 10%, about 15%, about 20%, about 25%, about 30%, about 35%, about 40%, about 45%, about 50%, about 55%, about 60%, about 65%, about 70%, about 75%, about 80%, about 85%, about 90%, about 95% or about 99% of a distance across the front wall of the bag, the back wall of the bag, or a combination thereof. Furthermore, the weakened area can comprise a deformation in least a portion of the front wall of the bag, the back wall of the bag, or a combination thereof. For example, the weakened area can comprise a scoring mark. 
     The easy open feature can be comprised within the first layer or the second layer of the bag, or within the first layer and the second layer of the bag. The bag can further comprise an adhesive pull tab covering at least a portion of the easy open feature or the entire easy open feature. The adhesive pull tab can comprise a piece of tape, and can also comprise printing, for example directions for opening the easy open feature or a promotional coupon. 
     In certain embodiments the bottom end of the bag is sealed using conventional means. For example, at least a portion of a single fold of the bottom end of the front wall and the rear wall of the bag can be sealed to the outer surface of the front wall or rear wall of the bag, using an adhesive sealing, heat sealing, adhesive lamination, extrusion lamination, stitching, ultrasonic energy, pressure, tape, or any combination thereof. Alternatively at least a portion of a double fold of the bottom end of the front wall and the rear wall of the bag can be sealed to the outer surface of the front wall or rear wall of the bag. However, in certain aspects at least a portion of the bottom end of the rear wall, or the entire bottom end of the rear wall, projects further than the bottom end of the front wall. Thus, the portion of the bottom end of the rear wall that projects further than the bottom end of the front wall can be sealed to the outer surface of the bottom end of the front wall. Additionally, the top end of the bag can be sealed using conventional means. For example, at least a portion of a single fold of the top end of the front wall and the rear wall of the bag can be sealed to the outer surface of the front wall or rear wall of the bag, using an adhesive sealing, heat sealing, adhesive lamination, extrusion lamination, stitching, ultrasonic energy, pressure, tape, or any combination thereof. Alternatively at least a portion of a double fold of the top end of the front wall and the rear wall of the bag can be sealed to the outer surface of the front wall or the rear wall of the bag. However, in certain aspects at least a portion of the top end of the rear wall, or the entire top end of the rear wall, projects further than the top end of the front wall. Thus, the portion of the top end of the rear wall that projects further than the top end of the front wall can be sealed to the outer surface of the bottom end of the front wall. The top end and/or the bottom end of the bag can also comprise stitching there through. 
     In certain embodiments 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. The first side wall and/or the second side wall can comprise gussets. In certain aspects 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. In an exemplary way to seal the bottom end of such bags, 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 can be sealed to the outer surface of the bottom end of the front wall. In additional aspects at least a portion of the top end of the front wall projects further than the top end of the first side wall, the top end of the second side wall and the top end of the rear wall. In these aspects the portion of the top end of the bag that projects further than the top end of the first side wall, the top end of the second side wall and the top end of the rear wall can be sealed to the outer surface of the top end of the rear wall. 
     Alternatively a portion of the bottom end of the rear wall can project further than the bottom end of the first side wall and the bottom end of the second side wall, and a portion of the bottom end of the first side wall and the bottom end of the second side wall can project further than the bottom end of the front wall. In an exemplary way to seal the bottom end of such bags, 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 projects further than the bottom end of the front wall can be sealed to the outer surface of the bottom end of the front wall. In further aspects at least a portion of the top end of the front wall projects further that 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. In these aspects the portion of the front wall that projects further than the top end of the first side wall and the top end of the second side wall, and the portion of the top end of the first side wall and the top end of the second side wall that projects further than the top end of the rear wall can be sealed to the outer surface of the top end of the rear wall. In particular embodiments the top end and the bottom end of the bag are sealed, as set forth above, and the bag comprises at least ten pounds by weight of a bulk item. In certain aspects such sealed bags can comprise six printable surfaces. 
     Additionally the bag can further comprise a third layer comprising a polymer positioned between the first layer and the second layer. The third layer can comprise a woven polymer, including, but not limited to, polypropylene, high density polyethylene, low density polyethylene, polyester, or any combination thereof. The third layer can alternatively comprise a polymeric film, including, but not limited to, polypropylene, polyethylene, polyethylene terephthalate, polyamide, or any combination thereof. The third layer can further comprises an oriented polymeric film, including, but not limited to, 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. 
     The present disclosure additionally provides 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, a first layer and a second layer, the front wall, back wall, first side wall and second side wall having an interior surface, an exterior surface, a top end and a bottom end, wherein the first layer comprises a polymer and the second layer comprises a polymer attached to the first layer, and wherein the bag comprises an easy open feature located on the front wall of the bag, the back wall of the bag, the first side wall of the bag, the second side wall of the bag, or any combination thereof. The easy open feature can be located on the front wall, the back wall, the first side wall, the second side wall, or any combination thereof. 
     The present disclosure also provides a bag comprising a front wall, a back wall, an interior surface, an exterior surface, a top end, a bottom end and a first layer, each of the front wall and back wall having an interior surface, an exterior surface, a top end and a bottom end, wherein the first layer comprises a woven polymer, and wherein the bag comprises an easy open feature located on the front wall of the bag, the back wall of the bag, or a combination thereof. The first layer can comprise polypropylene, high density polyethylene, low density polyethylene, polyester, or any combination thereof. The bag can further comprise a second layer, which can comprise a polymeric film. 
     The present disclosure further provides a method of making an easy open feature in a woven polymer bag, comprising creating a weakened area in the woven polymer bag. The step of creating a weakened area can further comprise making a cut, a plurality of perforations, or scoring a line in a portion of the bag surface. 
     The present disclosure provides bags comprising a front wall, a back wall, an interior surface, an exterior surface, a top end, a bottom end, a first layer and a second layer, each of the front wall and back wall having an interior surface, an exterior surface, a top end and a bottom end, wherein the first layer comprises a woven polymer and the second layer comprises a film attached to the first layer, and wherein the bag comprises an easy open feature comprising a cover with a first weakened area, the easy open feature located over a second weakened area on the front wall of the bag, the back wall of the bag, or a combination thereof. In certain embodiments the first layer comprises polypropylene, high density polyethylene, low density polyethylene, polyester, or any combination thereof. In other embodiments at least a portion of the second layer comprises a printed area thereon. In further embodiments the second layer comprises polypropylene, polyethylene, polyethylene terephthalate, polyamide, or any combination thereof or paper. In yet further embodiments 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, coated paper or any combination thereof. In additional embodiments the bags further comprise a third layer between said first layer and said second layer. In particular embodiments the third layer is an adhesive. In yet other embodiments the first layer and second layer are laminated together. In still other embodiments the first layer, second layer and third layer are laminated together. 
     In certain embodiments the easy open feature comprises a cover having a first surface and a second surface and an adhesive on at least a portion of the first surface, the second surface, or both. In some embodiments the first and/or second weakened area comprises a cut having a first end and a second end, wherein the cut penetrates through at least a portion of the bag or cover. In particular embodiments the cut comprises a carat, a semi-circle, an open square, or an open rectangle. In further embodiments the first and/or second weakened area further comprises a second cut having a first end and a second end. In other embodiments the first cut and the second cut intersect. In yet other embodiments the first cut and the second cut comprise an “X” shape. In yet further embodiments the first cut and the second cut comprise parallel lines. In still further embodiments the first and/or second weakened area further comprises a third cut. In some embodiments the first cut, the second cut and the third cut comprises an “H” shape. In some embodiments the bags further comprise a plurality of perforations extending from the first end and/or the second end of the cut, wherein the plurality of perforations penetrate through at least a portion of the bag or cover. In certain embodiments the plurality of perforations extends about 5%, about 10%, about 15%, about 20%, about 25%, about 30%, about 35%, about 40%, about 45%, about 50%, about 55%, about 60%, about 65%, about 70%, about 75%, about 80%, about 85%, about 90%, about 95% or about 99% of a distance across the bag or cover. 
     In further embodiments the first and/or second weakened area comprises a plurality of perforations that penetrate through at least a portion of the bag or cover. In particular embodiments the plurality of perforations forms a line. In some embodiments the plurality of perforations extends about 5%, about 10%, about 15%, about 20%, about 25%, about 30%, about 35%, about 40%, about 45%, about 50%, about 55%, about 60%, about 65%, about 70%, about 75%, about 80%, about 85%, about 90%, about 95% or about 99% of a distance across the bag or cover. In other embodiments the plurality of perforations defines a shape. In yet other embodiments the plurality of perforations defines a first line and a second line. 
     In certain other embodiments the first and/or second weakened area comprises a deformation in least a portion of the bag or cover. In further embodiments the first or second weakened area further comprises a scoring mark. In other embodiments the first weakened area comprises a cut having a first end and a second end or a plurality of perforations, wherein the cut or plurality of perforations penetrates through at least a portion of the cover, or a deformation in least a portion of the cover, and the second weakened area comprises a cut having a first end and a second end or a plurality of perforations, wherein the cut or plurality of perforations penetrates through at least a portion of the bag, or a deformation in least a portion of the bag. 
     In additional embodiments the cover comprises a polymer, a film, an adhesive, a paper, or any combination thereof. In certain embodiments the bags further comprise a second cover covering at least a portion of the weakened area of the cover. In particular embodiments the second cover covers the entire weakened area of the cover. In further embodiments the second cover comprises a polymer, a film, an adhesive, a paper, or any combination thereof. In other embodiments the cover and the second cover comprise the same material, width, color, transparency or strength as the second cover, while in yet other embodiments the cover and the second cover comprise a different material, width, color, transparency or strength as the second cover. In some embodiments the second cover comprises a piece of tape. In additional embodiments the second cover comprises printing, such as when the second cover comprises a coupon. 
     In certain embodiments 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. In other embodiments 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. In further embodiments 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. In additional embodiments at least a portion of the bottom end of the rear wall projects further than the bottom end of the front wall. In such embodiments the portion of the bottom end of the rear wall that projects further than the bottom end of the front wall can be sealed to the outer surface of the bottom end of the front wall. 
     In additional embodiments the bags further comprise 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. In further embodiments 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. In yet further embodiments 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. In other embodiments 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. In still other embodiments 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. 
     In particular embodiments the top end and the bottom end of the bag are sealed, and the bag comprises at least ten pounds by weight of a filling material. In further embodiments the bags further comprise a fourth layer comprising a polymer between the first layer and the second layer. In certain embodiments the fourth layer comprises a woven polymer, including, but not limited to, polypropylene, high density polyethylene, low density polyethylene, polyester, or any combination thereof. In other embodiments the fourth layer comprises a polymeric film, including, but not limited to, polypropylene, polyethylene, polyethylene terephthalate, polyamide, or any combination thereof. In additional embodiments 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. In certain other embodiments 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. In yet other embodiments 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 the top end or the bottom end of the bag. 
     The present disclosure further provides methods of making a woven polymer bag with an easy open feature, comprising attaching a cover with a first weakened area over a second weakened area of the woven polymer bag. In certain embodiments the first and/or second weakened area is a cut, a plurality of perforations, or a scoring line. The present disclosure additionally provides bags comprising a front wall, a back wall, a first side wall, a second side wall, an interior surface, an exterior surface, a first end, a second end, a first layer and a second layer, the front wall, back wall, first side wall and second side wall having an interior surface, an exterior surface, a first end and a second end, wherein the first layer comprises a woven polymer and the second layer comprises a film laminated to the first layer, wherein the first end of the front wall projects further than the first end of the first side wall and the first end of the second side wall, and the first end of the first side wall and the first end of the second side wall projects further than the first end of the back wall, wherein the bag comprises printing on the front wall, the first side wall, the back wall, the second side wall, the first end, the second end, or any combination thereof, and wherein the bag comprises an easy open feature comprising a cover comprising a first weakened area located over a second weakened area on the front wall of the bag, the back wall of the bag, the first side wall of the bag, the second side wall of the bag, or any combination thereof, and a second cover located over the first weakened area of the cover. 
     The present disclosure also provides bags comprising a front wall, a back wall, a first side wall, a second side wall, an interior surface, an exterior surface, a first end, a second end, a first layer and a second layer, the front wall, back wall, first side wall and second side wall having an interior surface, an exterior surface, a first end and a second end, wherein the first layer comprises a woven polymer and the second layer comprises a film laminated to the first layer, wherein the first end of the front wall projects further than the first end of the first side wall and the first end of the second side wall, and the first end of the first side wall and the first end of the second side wall projects further than the first end of the back wall, wherein the bag comprises printing on the front wall, the first side wall, the back wall, the second side wall, the first end, the second end, or any combination thereof, and wherein the bag comprises a weakened area on the front wall of the bag, the back wall of the bag, the first side wall of the bag, the second side wall of the bag, or any combination thereof, and a cover located over the weakened area of the bag. 
     The present disclosure provides a woven plastic bag that is stronger than bags made of plastic films, and yet easier to open than conventional woven bags. 
     The present disclosure also provides a woven plastic bag that includes an easy open feature and still provides strength and durability, reducing the potential for tearing, damage, infestation, and loss of contents. 
     The present disclosure still further provides a woven bag that can be manufactured more quickly and therefore is less costly than conventional bags, and that has an easy open feature that makes opening the woven bag easier than opening conventional woven bags. 
     The present disclosure also provides a woven polymeric bag that provides an attractive high end graphic display on at least one end of the bags when are displayed or presented at the point of sale. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  shows a bag with an easy open feature comprising a square cut through the bag located near the top end of the bag according to one embodiment of the present disclosure. 
         FIG. 2  shows a bag with an easy open feature comprising a carat cut through the bag located near the bottom end of the bag according to one embodiment of the present disclosure. 
         FIG. 3  shows a bag with an easy open feature comprising a semi-circular cut through the bag located near the top end of the bag according to one embodiment of the present disclosure. 
         FIG. 4  shows a pull tab comprising a promotional coupon according to one embodiment of the present disclosure. 
         FIG. 5  shows a bag with an easy open feature comprising a square cut through the bag located near the bottom end of the bag according to one embodiment of the present disclosure. 
         FIG. 6  shows a pinch cut bag with an easy open feature comprising a square cut through the bag located near the bottom end of the bag according to one embodiment of the present disclosure. 
         FIG. 7  shows a pinch cut bag with an easy open feature comprising a square cut through the bag located near the top end of the bag according to one embodiment of the present disclosure. 
         FIG. 8  shows an outline of a pinch cut bag with an easy open feature comprising a square cut through the bag located near the bottom end of the front panel of the bag according to one embodiment of the present disclosure. 
         FIG. 9  shows an outline of a pinch cut bag with an easy open feature comprising a square cut through the bag located near the top end of the front panel of the bag according to one embodiment of the present disclosure. 
         FIG. 10  shows an outline of a pinch cut bag with an easy open feature comprising a carat cut through the bag located near the top end of a side panel of the bag and extending through the side panel according to one embodiment of the present disclosure. 
         FIG. 11  shows an outline of a pinch cut bag with an easy open feature comprising a carat cut through the bag located near the top end of a side panel of the bag and extending across the entire length of the bag according to one embodiment of the present disclosure. 
         FIG. 12  shows an outline of a pinch cut bag with an easy open feature comprising a carat cut through the bag located near the top end of a side panel of the bag and extending across the side panel and the front panel of the bag according to one embodiment of the present disclosure. 
         FIG. 13  shows an outline of a pinch cut bag with an easy open feature comprising a bidirectional square cut through the bag located near the top end of the front panel of the bag and extending into both side panels according to one embodiment of the present disclosure. 
         FIG. 14  shows a back side view of a pinch cut bag according to one embodiment of the present disclosure. 
         FIG. 15  shows a front side view of a printed pinch cut bag with an easy open feature comprising a square cut through the bag located near the top end of the bag according to one embodiment of the present disclosure. 
         FIG. 16  shows a cross-sectional view of a top end or bottom end portion of a pinch cut bag according to one embodiment of the present disclosure. 
         FIG. 17  shows an isometric view of a pinch cut bag according to one embodiment of the present disclosure. 
         FIG. 18  shows a flush cut bag with an easy open feature comprising a cover located near the bottom end of the bag with an “H” cut through the cover according to one embodiment of the present disclosure. 
         FIG. 19  shows a bag with an easy open feature comprising a cover located near the bottom end of the bag with a carat cut through the cover according to one embodiment of the present disclosure. 
         FIG. 20  shows a flush cut bag with an easy open feature comprising a first cover located near the bottom end of the bag with an “H” cut through the first cover and a second cover over the “H” cut in the first cover according to one embodiment of the present disclosure. 
         FIG. 21  shows a bag with an easy open feature comprising a first cover located near the bottom end of the bag with a carat cut through the first cover and a second cover over the carat cut through the first cover according to one embodiment of the present disclosure. 
         FIG. 22  shows a pinch cut bag with an easy open feature comprising a cover located near the bottom end of the bag having a full cut in the shape of a triangle or carat through the cover according to one embodiment of the present disclosure. 
         FIG. 23  shows a bag with an easy open feature comprising a cover located near the bottom end of the bag having an “H” cut through the cover according to one embodiment of the present disclosure. 
         FIG. 24  shows a pinch cut bag with an easy open feature comprising first cover located near the bottom end of the bag having a full cut in the shape of a triangle or carat through the first cover and a second cover over the full cut according to one embodiment of the present disclosure. 
         FIG. 25  shows a bag with an easy open feature comprising a first cover located near the bottom end of the bag having an “H” cut through the first cover and a second cover over the “H” cut according to one embodiment of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     Referring first to  FIG. 1 , the front side view of an embodiment of a bag  1   a  is shown. Bag  1   a  has a front wall  10 , a back wall  11 , a first side wall  12 , a second side wall  13 , a top end  14 , and a bottom end  15 . It will be apparent, however, that the orientation of the bag ends  14  and  15  is unimportant and the “top” and “bottom” references are useful but may change depending on the orientation one views the bag. As shown in  FIG. 1  the top end  14  is considered a “flush cut” because the top ends of the front wall  10  and the back wall  11  are cut so that the top ends of the front wall  10  and the back wall  11  are essentially “flush” with one another; they have substantially the same length. Additionally, as shown in  FIG. 1  the bottom end  15  is considered a “pinch cut” because the bottom end of the front wall  10  is longer than the bottom end of the back wall  11 . Bag  1   a  also comprises an easy open feature  20  near the top end  14  of the bag  1   a , which in this embodiment comprises a full cut  21  in a rectangular shape having a first end  21   a  and a second end  21   b  through the front wall  10  of bag  1   a , a first row of perforations  22  extending from the first end  21   a  of the cut  21 , a second row of perforations  23  extending from the second end  21   b  of the cut  21 , an optional third row of perforations  24  connecting the end of the first row of perforations  22  and the second row of perforations  23 , a cover  25  over the cut  21  and the rows of perforations  22 ,  23  and  24 , and a pull tab  26  attached to the cover  25 . Although in this embodiment the easy open feature  20  is located near the top end  14  of the bag  1   a  and the pull tab is located close to the second side wall  13 , the skilled artisan will realize that the easy open feature  20  could also be in the opposite orientation, with the pull tab located closer to the first side wall  12 , reside in either orientation near the bottom end  15  of the front wall  10  of bag  1   a , or reside in either orientation near the top end  14  or bottom end  15  on the back wall  11  of the bag  1   a . The full cut  21  can be formed by punching, cutting, or through the use of a laser, or by any other technique known to those skilled in the art. The easy open feature  20  (in this embodiment the cut  21  and/or first  22  or second  23  row of perforations) provides a portion of bag  1   a  that is weakened. This weakened portion can be opened with less force than required to open or tear other portions of the bag  1   a.    
     Bag  1   a  can be opened by pulling the pull tab  26 , which removes the cover  25  and the portion of bag  1   a  defined by the cut  21  and the first, second, and third row of perforations  22 ,  23 , and  24 , respectively. Although not shown in this embodiment, it will be understood that the full cut  21  can be larger or smaller, and can extend to a greater or lesser extent, and the first and second rows of perforations  22  and  23 , respectfully, can extend any distance from the first end and second end, respectively, of the cut toward the opposite side wall of the bag, for example 50%, 75%, 90% or about 100% of the distance from the ends of the cut to the opposite side of the bag. In addition, although not shown in this embodiment, the cover  25  can cover less than the full extent of the first and second rows of perforations, whatever distance the rows of perforations extend across the front wall of the bag, and in certain embodiments covers only the full cut portion of the easy open feature  20 . The cover can comprise a polymer, a film, an adhesive, paper, or any combination thereof. Although not shown in  FIG. 1 , the cut  21  and the first, second, and third row of perforations  22 ,  23 , and  24  can comprise a first cover and a second cover, or a plurality of covers. Additionally, the pull tab  26  can comprise black and white and/or color printing (not shown), for example a coupon (not shown), and can also be used to reclose the bag. 
     Referring to  FIG. 2 , the front side view of another embodiment of a bag  1   b  is shown. Bag  1   b  also has a front wall  10 , a back wall  11 , a first side wall  12 , a second side wall  13 , a flush cut top end  14 , and a pinch cut bottom end  15 . Bag  1   b  also comprises an easy open feature  20 , which in this embodiment is near the bottom end  15  of the bag  1   b  and comprises a full cut  21  in a triangular or carat shape having a first end  21   a  and a second end  21   b  through the front wall  10  of bag  1   b , a first row of perforations  22  extending from the first end  21   a  of the cut  21 , a second row of perforations  23  extending from the second end  21   b  of the cut  21 , an optional third row of perforations  24  connecting the end of the first row of perforations  22  and the second row of perforations  23 , a cover  25  over the cut and the rows of perforations, and a pull tab  26  attached to the cover  25 . 
     Referring to  FIG. 3 , the front side view of yet another embodiment of a bag  1   c  is shown. Bag  1   c  also has a front wall  10 , a back wall  11 , a first side wall  12 , a second side wall  13 , a flush cut top end  14 , and a pinch cut bottom end  15 . Bag  1   c  also comprises an easy open feature  20 , which in this embodiment is near the top end  14  of the bag  1   c  and comprises a full cut  21  in a semi-circular shape having a first end  21   a  and a second end  21   b  through the front wall  10  of bag  1   c , a first row of perforations  22  extending from the first end  21   a  of the cut  21 , a second row of perforations  23  extending from the second end  21   b  of the cut  21 , an optional third row of perforations  24  connecting the end of the first row of perforations  22  and the second row of perforations  23 , a cover  25  over the cut and the rows of perforations, and a pull tab  26  attached to the cover  25 . 
     Referring to  FIG. 4 , an alternate embodiment of a cover  25  and pull tab  26  is shown, where the cover  25  is over the full cut  21  in a semi-circular shape having a first end  21   a  and a second end  21   b , but does not cover the full extent of the first row of perforations  22  and the second row of perforations  23 , and does not cover the third row of perforations  24 . In this embodiment, the pull tab  26  includes instructions to open the bag, but can also comprise black and white and/or color printing (not shown), for example a promotional coupon (not shown). 
     Referring to  FIG. 5 , the front side view of still another embodiment of a bag  1   d  is shown. Bag  1   d  also has a front wall  10 , a back wall  11 , a first side wall  12 , a second side wall  13 , a flush cut top end  14 , and a pinch cut bottom end  15 . Bag  1   d  also comprises an easy open feature  20 , which in this embodiment is near the bottom end  15  of the bag  1   d  and comprises a full cut  21  in a rectangular shape having a first end  21   a  and a second end  21   b  through the front wall  10  of bag  1   d , a first row of perforations  22  extending from the first end  21   a  of the cut  21 , a second row of perforations  23  extending from the second end  21   b  of the cut  21 , an optional third row of perforations  24  connecting the end of the first row of perforations  22  and the second row of perforations  23 , a cover  25  over the cut and the rows of perforations, and a pull tab  26  attached to the cover  25 . 
     Referring to  FIG. 6 , the front side view of one embodiment of a “pinch cut” bag  100   a  is shown. As shown in  FIG. 6 , the bag  100   a  has a pinch cut first or top end  105  and a pinch cut second or bottom end  110 . Once again, it will be apparent, however, that the orientation of the bag ends  105  and  110  is unimportant and the “top” and “bottom” references are useful but may change depending on the orientation one views the bag. The bag  100   a  has a front wall or surface  108  with top end  116 , a rear wall or surface  106 , and two side walls  102  and  103 . Those skilled in the art will appreciate that conventional techniques can be used to provide side gussets in the bag  100   a  for each of sides  102  and  103  during this forming process. The first end  105  of bag  100   a  has portions  112   a  and  112   b  of the rear wall or surface  108  of the bag that extend further from the body of the bag  100   a  than do portions  114   a  and  114   b  of the material of bag  100   a  forming the side gussets for sides  102  and  103 . In addition, the portions  114   a  and  114   b  of the side gussets extend further from the body of the bag  100   a  than the top end  116  of the front wall  108  of the bag  100   a . As shown in  FIG. 6 , the front wall  108  of the bag  100   a  has an end portion  116  at the first end  105  of the bag that does not extend as far from the body of the bag  100   a  as the end portions  114   a  and  114   b  of the side gussets or the end portions  112   a  and  112   b  of the rear wall of the first end  105  of the bag  100   a . Bag  100   a  also comprises an easy open feature  120  near the top end  105  of the bag  100   a , which in this embodiment comprises a full cut  121  in a rectangular shape having a first end  121   a  and a second end  121   b  through the front wall  108  of bag  100   a , a first row of perforations  122  extending from the first end  121   a  of the cut  121 , a second row of perforations  123  extending from the second end  121   b  of the cut  121 , an optional third row of perforations  124  connecting the end of the first row of perforations  122  and the second row of perforations  123 , a cover  125  over the cut and the rows of perforations, and a pull tab  126  attached to the cover  125 . 
     Referring to  FIG. 7 , the front side view of another embodiment of a “pinch cut” bag  100   b  is shown. As shown in  FIG. 7 , the bag  100   b  has a pinch cut first or top end  105  and a pinch cut second or bottom end  110 . The bag  100   b  has a front wall or surface  108  with top end  116 , a rear wall or surface  106 , and two side walls  102  and  103 . The first end  105  of bag  100   b  has portions  112   a  and  112   b  of the rear wall or surface  108  of the bag that extend further from the body of the bag  100   b  than do portions  114   a  and  114   b  of the material of bag  100  forming the side gussets for sides  102  and  103 . In addition, the portions  114   a  and  114   b  of the side gussets extend further from the body of the bag  100   b  than the top end  116  of the front wall  108  of the bag  100   b . As shown in  FIG. 7 , the front wall  108  of the bag  100   b  has an end portion  116  at the first end  105  of the bag that does not extend as far from the body of the bag  100   b  as the end portions  114   a  and  114   b  of the side gussets or the end portions  112   a  and  112   b  of the rear wall of the first end  105  of the bag  100   b . Bag  100   b  also comprises an easy open feature  120 , which in this embodiment is near the bottom end  110  of the bag  100   b  and comprises a full cut  121  in a rectangular shape having a first end  121   a  and a second end  121   b  through the front wall  108  of bag  100   b , a first row of perforations  122  extending from the first end  121   a  of the cut  121 , a second row of perforations  123  extending from the second end  121   b  of the cut  121 , an optional third row of perforations  124  connecting the end of the first row of perforations  122  and the second row of perforations  123 , a cover  125  over the cut and the rows of perforations, and a pull tab  126  attached to the cover  125 . 
     Referring to  FIG. 8 , a planar view of an embodiment of a substantially flat sheet of material from which a “pinch cut” bag  100   c  is to be formed is shown. Shown on the sheet are front wall  108 , rear wall  106 , first side  102  having gusset portion  114   a , second side  103  having gusset portion  114   b , seam  104 , top end  105  and bottom end  110 . Also shown is easy open feature  120 , which in this embodiment is near the bottom end  110  of the front wall  108  of the bag  100   c  and comprises a full cut  121  in a rectangular shape having a first end  121   a  and a second end  121   b  through the front wall  108  of bag  100   c , a first row of perforations  122  extending from the first end  121   a  of the cut  121  across the front wall  108  of bag  100   a , a second row of perforations  123  extending from the second end  121   b  of the cut  121  across the front wall  108  of bag  100   c , an optional third row of perforations  124  connecting the end of the first row of perforations  122  and the second row of perforations  123 , a cover  125  over the cut  121  and the rows of perforations, and a pull tab  126  attached to the cover  125 . 
     Referring to  FIG. 9 , a planar view of another embodiment of a substantially flat sheet of material from which a “pinch cut” bag  100   d  is to be formed is shown. Shown on the sheet are front wall  108 , rear wall  106 , first side  102  having gusset portion  114   a , second side  103  having gusset portion  114   b , seam  104 , top end  105  and bottom end  110 . Also shown is easy open feature  120 , which in this embodiment is near the top end  105  of the front wall  108  of the bag  100   d  and comprises a full cut  121  in a rectangular shape having a first end  121   a  and a second end  121   b  through the front wall  108  of bag  100   d , a first row of perforations  122  extending from the first end  121   a  of the cut  121  across the front wall  108  of bag  100   d , a second row of perforations  123  extending from the second end  121   b  of the cut  121  across the front wall  108  of bag  100   d , an optional third row of perforations  124  connecting the end of the first row of perforations  122  and the second row of perforations  123 , a cover  125  over the cut  121  and the rows of perforations, and a pull tab  126  attached to the cover  125 . 
     Referring to  FIG. 10 , a planar view of another embodiment of a substantially flat sheet of material from which a “pinch cut’ bag  100   e  is to be formed is shown. Shown on the sheet are front wall  108 , rear wall  106 , first side  102  having gusset portion  114   a , second side  103  having gusset portion  114   b , seam  104 , top end  105  and bottom end  110 . Also shown is easy open feature  120 , which in this embodiment is near the top end  105  of the second side  103  of the bag  100   e  and comprises a full cut  121  in a carat shape having a first end  121   a  and a second end  121   b  through the second side  103  of bag  100   e , a first row of perforations  122  extending from the first end  121   a  of the cut  121  across the second side  103  of bag  100   e , a second row of perforations  123  extending from the second end  121   b  of the cut  121  across the second side  103  of bag  100   e , an optional third row of perforations  124  connecting the end of the first row of perforations  122  and the second row of perforations  123 , and a cover  127  over the cut  121  and a small portion of the first row of perforations  122  and second row of perforations  123 . 
     Referring to  FIG. 11 , a planar view of another embodiment of a substantially flat sheet of material from which a “pinch cut” bag  100   f  is to be formed is shown. Shown on the sheet are front wall  108 , rear wall  106 , first side  102  having gusset portion  114   a , second side  103  having gusset portion  114   b , seam  104 , top end  105  and bottom end  110 . Also shown is easy open feature  120 , which in this embodiment is near the top end  105  of the second side  103  of the bag  100   f  and comprises a full cut  121  in a carat shape having a first end  121   a  and a second end  121   b  through the second side  103  of bag  100   f , a first row of perforations  122  extending from the first end  121   a  of the cut  121  across the second side  103 , front wall  108 , first side  102  and rear wall  104  of bag  100   f , a second row of perforations  123  extending from the second end  121   b  of the cut  121  across the second side  103 , front wall  108 , first side  102  and rear wall  104  of bag  100   f , an optional third row of perforations  124  connecting the end of the first row of perforations  122  and the second row of perforations  123 , and a cover  127  over the cut  121  and a small portion of the first row of perforations  122  and second row of perforations  123 . 
     Referring to  FIG. 12 , a planar view of another embodiment of a substantially flat sheet of material from which a “pinch cut” bag  100   g  is to be formed is shown. Shown on the sheet are front wall  108 , rear wall  106 , first side  102  having gusset portion  114   a , second side  103  having gusset portion  114   b , seam  104 , top end  105  and bottom end  110 . Also shown is easy open feature  120 , which in this embodiment is near the top end  105  of the second side  103  of the bag  100   g  and comprises a full cut  121  in a carat shape having a first end  121   a  and a second end  121   b  through the second side  103  of bag  100   g , a first row of perforations  122  extending from the first end  121   a  of the cut  121  across the second side  103 , front wall  108  and into the first side  102  of bag  100   g , a second row of perforations  123  extending from the second end  121   b  of the cut  121  across the second side  103 , front wall  108  and into the first side  102  of bag  100   g , an optional third row of perforations  124  connecting the end of the first row of perforations  122  and the second row of perforations  123 , and a cover  127  over the cut  121  and a small portion of the first row of perforations  122  and second row of perforations  123 . 
     Referring to  FIG. 13 , a planar view of another embodiment of a substantially flat sheet of material from which a “pinch cut” bag  100   h  is to be formed is shown. Shown on the sheet are front wall  108 , rear wall  106 , first side  102  having gusset portion  114   a , second side  103  having gusset portion  114   b , seam  104 , top end  105  and bottom end  110 . Also shown is easy open feature  120 , which in this embodiment is near the top end  105  of the front wall  108  of the bag  100   h  and comprises a bidirectional full cut  121  in a square shape having a first end  121   a , a second end  121   b , a third end  121   c  and a fourth end  121   d  through the front wall  108  of bag  100   h , a first row of perforations  122  extending from the first end  121   a  of the cut  121  across the front wall  108  and into the first side  102  of bag  100   h , a second row of perforations  123  extending from the second end  121   b  of the cut  121  across the front wall  108  and into the first side  102  of bag  100   h , an optional third row of perforations  124  connecting the end of the first row of perforations  122  and the second row of perforations  123 , a fourth row of perforations  122   a  extending from the third end  121   c  of the cut  121  across the front wall  108  and into the second side  103  of bag  100   h , a fifth row of perforations  123   a  extending from the fourth end  121   d  of the cut  121  across the front wall  108  and into the second side  103  of bag  100   h , an optional sixth row of perforations  124   a  connecting the end of the fourth row of perforations  122   a  and the fifth row of perforations  123   a , and a cover  127  over the cut  121  and a small portion of the first row of perforations  122 , second row of perforations  123 , fourth row of perforations  122   a  and fifth row of perforations  123   a.    
     Referring to  FIG. 14 , the back side view of yet another embodiment of a “pinch cut” bag  100   j  is shown. As shown in  FIG. 14 , the bag  100   j  has a first end  105  and a second end  110 . It is useful to think of first and second ends  105  and  110  as the top and bottom ends of the bag  100   j , respectively. The bag  100   j  has a front wall or surface  108 , a rear wall or surface  106 , and two side walls  102  and  103 . The bag  100   j  also has a seam  104  on the back side, or rear wall or surface. The seam  104  is made when the bag  100  is formed using conventional methods known to those skilled in the art. Using such conventional methods, a material from which a bag  100   j  is to be formed (such materials are discussed in detail below) is provided in a substantially flat sheet (see  FIG. 8  through  FIG. 13 ). The sheet is then directed and formed so that a portion of one side of the sheet is disposed on top of the other side of the sheet, such as in forming a tube. The overlapping portion is then secured and sealed together, forming the seam  104 . Those skilled in the art will appreciate that conventional techniques can be used to provide side gussets in the bag  100   j  for each of sides  102  and  103  during this forming process. 
     The bottom (as shown in  FIG. 14 ) of the first end  105  of bag  100   j  has portions  112   a  and  112   b  of the front wall  108  or surface of the bag that extend further from the body of the bag  100   j  than do portions  114   a  and  114   b  of the material of bag  100   j  forming the side gussets for sides  102  and  103 . In addition, the portions  114   a  and  114   b  of the side gussets extend further from the body of the bag  100   j  than the top end  117  of the rear wall  106  of the bag  100   j . As shown in  FIG. 14 , the rear wall of the bag  100   j  has a top end  117  that does not extend as far from the body of the bag  100   j  as the end portions  114   a  and  114   b  of the side gussets or the end portions  112   a  and  112   b  of the front wall  108  of the bag  100   j.    
     Now referring to  FIG. 15 , a top side view of a “pinch cut” bag  100   k  is provided. For ease of reference, the same numerals are used in the FIGURES to denote the same features of bag  100   k . As shown in  FIG. 15 , the bag  100   k  comprises multiple layers of materials  220 ,  222  and  224 . The first layer  220  is preferably a woven polymeric material, such as polypropylene, polyester, high-density polyethylene, or polyethylene. The woven plastic layer  220  can be made of woven strips of plastic made of film to provide great strength from relatively lightweight materials, and can also be stretched to provide greater strength. For example, cross-laminated, woven plastic film strips, like XF films, are useful and are commercially available from Valeron. Similarly, a biaxially oriented polypropylene plastic material is commercially available from the AmTopp Division of Inteplast Group, Ltd. Those skilled in the art will appreciate that other materials, including various blends of polypropylene and polyethylene can be used without departing from the scope of the disclosure. 
     Still referring to  FIG. 15 , the layer  222  is a coating or a lamination, preferably a polypropylene film. Layer  224  is preferably an oriented polypropylene film with reverse printing. The layer  224  can comprise reverse printing of various labels, advertising, warnings, and other information as may be desired, such as the cover  130  shown in  FIG. 15 . Although not shown, those skilled in the art will appreciated that the top side, back side, and sides  102  and  103  of the bag  100  may all contain such pictures, patterns, or information as may be desired. Those skilled in the art will appreciate that the reverse printing of layer  224  can be achieved with conventional techniques, and with various conventional plastic films. An advantage of printing the bottom portion of the front and/or back panels is the provision of information that remains visible when the bag is on a display shelf in a store. 
     Still referring to  FIG. 15 , the bottom side (as shown in  FIG. 15 ) of the bag  100   k  extends outward from the body of the bag  100   k  at the second end  110  of the bag  100   k . As shown in  FIG. 15 , the top side of the bag  100   k  has an end portion  140  extending along the width of the bag  100   k . The side gussets of the sides  102  and  103  of the bag  100   k  each have portions  142   a  and  142   b  which extend further towards the second end  110  of the bag  100   k  than the end portion  140  of the top side of bag  100   k . In addition, the bottom side of the bag  100   k  has an end portion  110  that extends further from the end portions  142   a  and  142   b  of the side gussets. The end portion  110  of the bag  100   k  includes portions  144   a  and  144   b . As shown in  FIG. 15 , the second end portion of the bottom side of the bag  100   k  extends along the entire width of the bag  100   k . Also shown is seam  104 . 
     Still referring to  FIG. 15 , the exposed end portions  144   a  and  144   b  of the bottom side of the bag  100   k  can be coated with a durable adhesive. The adhesive can be applied to selective surface areas, such as portions  144   a  and  144   b , or can be applied in a line extending across the bottom side of the bag  100   k  along the second end portion  110 , including portions  144   a  and  144   b . After the adhesive is applied, preferably the sides  102  and  103  of the bag  100 , together with the bottom side of the bag  100   k  are folded so that at least a portion of the interior surface of the bottom side of the bag  100   k  extends over the top surface of the top side of the bag  100   k . Preferably, the portions  142   a  and  142   b  of the side gussets will be folded over and attached to the top surface of the top side of the bag  100   k , as well as portions  144   a  and  144   b  of the second end  110  of the bottom side of the bag  100   k . The coating then seals the second end  110  of the bag  100   k  together. The first end  105  of the bag  100   k  can be sealed in a similar fashion if desired. Alternatively, the first end  105  or second end  110  of the bag  100   k  can be sealed using a hot melt technique or any other technique well-known to those skilled in the art. 
     Referring now to  FIG. 16 , a detailed cross-sectional view of an end portion of the bag  100  is provided. As shown in  FIG. 16 , at least a portion of the front side  130  of bag  100  is now covered by the lowest edge portion  110  of the back side of bag  100 , the extending portions  142   a ,  142   b  of side  102  of the bag  100 , as well as a portion of the front side  130  of bag  100  including end portion  140 . Once these portions are folded over, heat and pressure can be applied as appropriate to obtain and ensure that the bottom end  110  of bag  100  is durably sealed, such as with a conventional heat sealable adhesive. 
     Once the bag  100  is sealed at one end, it can be filled with the desired materials. It has been found that a bag  100  with a height of 41 inches and a width of 28 inches can durably hold at least about fifty (50) pounds of material without showing undue stress, tearing, breakage or the like. It is believed that any bulk material can be contained by bag  100 , and the contents can weigh up to 100 pounds or so without undue risk of tearing or damage to bag  100 . Once the bag  100  is filled, the second end typically needs to be sealed. The second end of the bag  100  can be sealed in a similar manner as that described above for the bottom end  110 . Alternatively, the bag  100  can have its second end sealed by conventional means such as sewing. Still another approach is to seal the second end in a manner like that described for the bottom end  110  of the bag  100 , and then stitching one of the two ends (not shown). Although not shown, those skilled in the art will understand and appreciate that a second end of bag  100  can be sealed with conventional techniques once bag  100  has been filled with the selected amount of the desired material. 
     Referring now to  FIG. 17 , an isometric view of bag  1700  is provided. As shown in  FIG. 17 , the bag  1700  includes a front panel  1701 , a first side panel with gussets  1709 , a second side panel with gussets (not visible in  FIG. 17 ), a top end  1703 , and a bottom end  1705 . The bag  1700  is a pinch cut bag like those described previously, with both a pinch cut top end  1703  and a pinch cut bottom end  1705 . The bag  1700  preferably has a weakened area (not shown in  FIG. 17 ) or other easy open feature on at least one surface (not shown in  FIG. 17 ). As shown in  FIG. 17 , the bag  1700  has been filled and sealed and contains one or more materials. Although the contents of the bag  1700  may be food, animal food, other bulk items, the contents may also contain liquids or mixtures. Those skilled in the art will appreciate that the bag  1700 , once formed in accordance with the present disclosure, may be filled and then either the top end  1703  or the bottom end  1705  or both may be sealed as described previously. As shown in  FIG. 17 , the bag  1700 , once filled, presents a bottom panel  1707  on the bottom end  1705  thereof and a top panel on the top end thereof (not visible in  FIG. 17 ). The bag  1700  may be stacked on top of similar or different bags, such as at a grocery store, pet store, or other display location, such that panel  1707  is easily visible to a consumer. As shown in  FIG. 17  the front panel  1701 , the first side panel  1709  and the bottom panel  1707  includes printing (and can also include graphics), and it will be appreciated by the skilled artisan that the top panel, the rear panel, and the second side panel of bag  1700 , which are not visible in  FIG. 17 , can also include graphics and/or printing. Thus bag  1700  has six discrete areas for printing and/or graphics, each formed by a discrete surface area of the bag  1700 . Additionally, the printing and/or graphics can extend across more than one panel, or any combination of the six panels (not shown). The panel  1707  may include graphics and/or printing so that a consumer is able to quickly, readily and easily identify the brand of the contents in the bag, such as the brand name for the pet food therein if the bag  1700  contains pet food. Alternatively, or in addition, the printing or graphics on the panel  1707  may contain information such as price, composition, expiration date, and the like. In another embodiment, the panel  1707  may contain printing or graphics that provide a coupon or other price discount or other offer, either on the contents of the bag  1700  or some other product. 
     Referring to  FIG. 18 , the front side view of an embodiment of a “flush cut” bag  1001   a  is shown. Bag  1001   a  has a front wall  1010 , a back wall  1011 , a first side wall  1012 , a second side wall  1013 , a top end  1014 , and a bottom end  1015 . It will be apparent, however, that the orientation of the bag ends  14  and  15  is unimportant and the “top” and “bottom” references are useful but may change depending on the orientation one views the bag. Bag  1001   a  is considered a “flush cut” bag because the front wall  1010  and the back wall  1011  are cut so that the ends of the front wall  1010  and the back wall  1011  are essentially “flush” with one another; they have substantially the same length. Bag  1001   a  also comprises an easy open feature  1030  comprising a cover  1019  proximal to the sealed single fold  1016  (in other embodiments this could be a double fold) at the bottom end  1015  of the bag  1001   a . In this embodiment the cover  1019  comprises a first cut  1031  through the cover  1019  having a first end  1031   a  and a second end  1031   b , a second cut  1032  through the cover  1019  having a first end  1032   a  and a second end  1032   b , and a third cut  1033  through the cover  1019  extending from the first cut  1031  to the second cut  1032 . This particular orientation of cuts is also referred to as an “H” cut. Although in this embodiment the “H” cut is located near the center of the cover  1019 , the skilled artisan will realize that the “H” cut could be in any location along the cover, for example closer to the first side wall  1012  or the second side wall  1013 . The “H” cut can be formed by punching, cutting, or through the use of a laser, or by any other technique known to those skilled in the art. The “H” cut provides a portion of the cover  1019  that is weakened. This weakened portion can be opened with less force than required to open or tear other portions of the cover  1019 . 
     Bag  1001   a  can be opened by pulling the portion of the cover  1019  on either (or both) end of the third cut  1033 , which exposes a weakened area, for example a cut, a series of perforations, or a scoring line, on the front wall  1010  of the bag  1001   a  proximal to the single  1016  (or double) fold at the bottom end  1015  of the bag  1001   a . This weakened portion can be opened with less force than required to open or tear other portions of the bag  1001   a , including, but not limited to, the sealed single  1016  (or double) fold. Although not shown in this embodiment, it will be understood that the first cut  1031  and/or second cut  1032  can be larger or smaller, and can extend any distance from the first ends  1031   a  and  1032   a  and second ends  1031   b  and  1032   b , respectively, of the first  1031  and second  1032  cut toward the opposite side walls of the bag, for example covering 50%, 75%, 90% or about 100% of the distance from the third cut to the opposite sides of the bag. 
     Referring to  FIG. 19 , a front side view of another embodiment of a bag  1001   b  is shown. Bag  1001   b  also has a front wall  1010 , a back wall  1011 , a first side wall  1012 , a second side wall  1013 , a flush cut top end  1014 , and a pinch cut bottom end  1015 . Bag  1001   b  also comprises an easy open feature  1020  comprising a cover  1019 , which in this embodiment is near the bottom end  1015  of the bag  1001   b  and comprises a full cut  1021  in a triangular or carat shape having a first end  1021   a  and a second end  1021   b  through the cover  1019 . Bag  1001   b  can be opened by pulling the full cut  1021  across the cover  1019 , exposing a weakened area, for example a cut, a series of perforations, or a scoring line, on the front wall  1010  of the bag  1001   b . The weakened area of the bag  1001   b  can be opened with less force than required to open or tear other portions of the bag  1001   b.    
     Referring to  FIG. 20 , a front side view of another embodiment of a flush cut bag  1001   c  is shown. Bag  1001   c  also has a front wall  1010 , a back wall  1011 , a first side wall  1012 , a second side wall  1013 , a top end  1014 , and a bottom end  1015 . Bag  1001   c  also comprises an easy open feature  1030  comprising a first cover  1019  that covers a weakened portion of the bag  1001   c  proximal to the sealed single fold  1016  (in other embodiments this could be a double fold) at the bottom end  1015  of the bag  1001   a . In this embodiment the first cover  1019  comprises a first cut  1031  through the first cover  1019  having a first end  1031   a  and a second end  1031   b , a second cut  1032  through the first cover  1019  having a first end  1032   a  and a second end  1032   b , and a third cut  1033  through the first cover  1019  extending from the first cut  1031  to the second cut  1032 . Once again, this particular orientation of cuts is also referred to as an “H” cut. In this embodiment the “H” cut is covered by a second cover  1035  having a pull tab  1036 . Bag  1001   c  can be opened by pulling the pull tab  1036 , thus removing the second cover  1035  from the “H” cut, and then pulling the portion of the first cover  1019  on either (or both) end of the third cut  1033 , which exposes a weakened area, for example a cut, a series of perforations, or a scoring line, on the front wall  1010  of the bag  1001   c  near the sealed single  1016  (or double) fold at the bottom end  1015  of the bag  1001   c . This weakened area can be opened with less force than required to open or tear other portions of the bag  1001   c , including, but not limited to, the sealed single  1016  (or double) fold. 
     Referring to  FIG. 21 , a front side view of another embodiment of a bag  1001   d  is shown. Bag  1001   d  also has a front wall  1010 , a back wall  1011 , a first side wall  1012 , a second side wall  1013 , a flush cut top end  1014 , and a pinch cut bottom end  1015 . Bag  1001   d  also comprises an easy open feature  1020  comprising a first cover  1019 , which in this embodiment is near the bottom end  1015  of the bag  1001   d  and comprises a full cut  1021  in a triangular or carat shape having a first end  1021   a  and a second end  1021   b  through the first cover  1019 . In this embodiment the full cut  1021  is covered by a second cover  1025  having a pull tab  1026 . Bag  1001   d  can be opened by pulling the pull tab  1026 , thus removing the second cover  1025  from the full cut  1021 , and then pulling the full cut  1021  across the first cover  1019 , exposing a weakened area, for example a cut, a series of perforations, or a scoring line, on the front wall  1010  of the bag  1001   d . The weakened area of the bag  1001   d  can be opened with less force than required to open or tear other portions of the bag  1001   d.    
     Referring to  FIG. 22 , the front side view of one embodiment of a “pinch cut” bag  1100   a  is shown. As shown in  FIG. 22 , the bag  1100   a  has a first or top end  1105  and a second or bottom end  1110 . Once again, it will be apparent, however, that the orientation of the bag ends  1105  and  1110  is unimportant and the “top” and “bottom” references are useful but may change depending on the orientation one views the bag. In the embodiment shown in  FIG. 22  both of the ends of the bag  1100   a  have a “pinch cut.” The bag  1100   a  has a front wall or surface  1108  with top end  1116 , a rear wall or surface  1106 , and two side walls  1102  and  1103 . Those skilled in the art will appreciate that conventional techniques can be used to provide side gussets in the bag  1100   a  for each of sides  1102  and  1103  during this forming process. The first end  1105  of bag  1100   a  has portions  1112   a  and  1112   b  of the rear wall or surface  1108  of the bag that extend further from the body of the bag  1100   a  than do portions  1114   a  and  1114   b  of the material of bag  1100   a  forming the side gussets for sides  1102  and  1103 . In addition, the portions  1114   a  and  1114   b  of the side gussets extend further from the body of the bag  1100   a  than the top end  1116  of the front wall  1108  of the bag  1100   a . As shown in  FIG. 22 , the front wall  1108  of the bag  1100   a  has an end portion  1116  at the first end  1105  of the bag that does not extend as far from the body of the bag  1100   a  as the end portions  1114   a  and  1114   b  of the side gussets or the end portions  1112   a  and  1112   b  of the rear wall of the first end  1105  of the bag  1100   a . Bag  1100   a  also comprises an easy open feature  1120  comprising a cover  1019  near the bottom end  1110  of the bag  1100   a . In this embodiment the cover  1019  comprises a full cut  1121  in a rectangular shape having a first end  1121   a  and a second end  1121   b  through the cover  1019 . Bag  1100   a  can be opened by pulling the full cut  1121  across the cover  1019 , exposing a weakened area, for example a cut, a series of perforations, or a scoring line, on the front wall  1108  of the bag  1100   a . The weakened area on the front wall  1108  of the bag  1100   a  can be opened with less force than required to open or tear other portions of the bag  1100   a.    
     Referring to  FIG. 23 , the front side view of another embodiment of a bag  1100   b  is shown. As shown in  FIG. 23 , the bag  1100   b  has a pinch cut first or top end  1105  and a flush cut second or bottom end  1110 . The bag  1100   b  has a front wall or surface  1108  with top end  1116 , a rear wall or surface  1106 , and two side walls  1102  and  1103 . The first end  1105  of bag  1100   b  has portions  1112   a  and  1112   b  of the rear wall or surface  1108  of the bag that extend further from the body of the bag  1100   b  than do portions  1114   a  and  1114   b  of the material of bag  1100   b  forming the side gussets for sides  1102  and  1103 . In addition, the portions  1114   a  and  1114   b  of the side gussets extend further from the body of the bag  1100   b  than the top end  1116  of the front wall  1108  of the bag  1100   b . As shown in  FIG. 23 , the front wall  1108  of the bag  1100   b  has an end portion  1116  at the first end  1105  of the bag that does not extend as far from the body of the bag  1100   b  as the end portions  1114   a  and  1114   b  of the side gussets or the end portions  1112   a  and  1112   b  of the rear wall of the first end  1105  of the bag  1100   b . In addition, the bottom end  1110  of bag  1100   b  is sealed using a single fold  1109  (in other embodiments this can be a double fold). Bag  1100   b  also comprises an easy open feature  1130  comprising a cover  1019 , proximal to the sealed single  1016  (or double) fold at the bottom end  1110  of the bag  1100   b . The cover  1019  comprises a first cut  1031  through the cover  1019  having a first end  1031   a  and a second end  1031   b , a second cut  1032  through the cover  1019  having a first end  1032   a  and a second end  1032   b , and a third cut  1033  through the cover  1019  extending from the first cut  1031  to the second cut  1032 . Once again, this particular orientation of cuts is also referred to as an “H” cut. Bag  1100   b  can be opened by pulling the portion of the cover  1019  on either (or both) end of the third cut  1033 , which exposes a weakened area, for example a cut, a series of perforations, or a scoring line, on the front wall  1108  of the bag  1100   b . The weakened area on the front wall  1108  of the bag  1100   b  can be opened with less force than required to open or tear other portions of the bag  1100   b , including, but not limited to, the sealed single  1109  (or double) fold. 
     Referring to  FIG. 24 , the front side view of one embodiment of a “pinch cut” bag  1100   c  is shown. As shown in  FIG. 24 , the bag  1100   c  has a first or top end  1105  and a second or bottom end  1110 . Once again, it will be apparent, however, that the orientation of the bag ends  1105  and  1110  is unimportant and the “top” and “bottom” references are useful but may change depending on the orientation one views the bag. In the embodiment shown in  FIG. 24  both of the ends of the bag  1100   c  have a “pinch cut.” The bag  1100   c  has a front wall or surface  1108  with top end  1116 , a rear wall or surface  1106 , and two side walls  1102  and  1103 . Those skilled in the art will appreciate that conventional techniques can be used to provide side gussets in the bag  1100   c  for each of sides  1102  and  1103  during this forming process. The first end  1105  of bag  1100   c  has portions  1112   a  and  1112   b  of the rear wall or surface  1108  of the bag that extend further from the body of the bag  1100   c  than do portions  1114   a  and  1114   b  of the material of bag  1100   c  forming the side gussets for sides  1102  and  1103 . In addition, the portions  1114   a  and  1114   b  of the side gussets extend further from the body of the bag  1100   c  than the top end  1116  of the front wall  1108  of the bag  1100   c . As shown in  FIG. 24 , the front wall  1108  of the bag  1100   c  has an end portion  1116  at the first end  1105  of the bag that does not extend as far from the body of the bag  1100   c  as the end portions  1114   a  and  1114   b  of the side gussets or the end portions  1112   a  and  1112   b  of the rear wall of the first end  1105  of the bag  1100   c . Bag  1100   c  also comprises an easy open feature  1120  comprising a first cover  1019  near the bottom end  1110  of the bag  1100   c . In this embodiment the first cover  1019  comprises a full cut  1121  in a rectangular shape having a first end  1121   a  and a second end  1121   b  through the first cover  1019 , and a second cover  1125  having a pull tab  1126  covering the full cut  1121  in the first cover  1019 . Bag  1100   c  can be opened by pulling the pull tab  1126 , thus removing the second cover  1125  from the full cut  1121 , and then pulling the full cut  1121  across the first cover  1019 , exposing a weakened area, for example a cut, a series of perforations, or a scoring line, on the front wall  1108  of the bag  1100   c . The weakened area on the front wall  1108  of the bag  1100   c  can be opened with less force than required to open or tear other portions of the bag  1100   c.    
     Referring to  FIG. 25 , the front side view of another embodiment of a bag  1100   d  is shown. As shown in  FIG. 25 , the bag  1100   d  has a pinch cut first or top end  1105  and a flush cut second or bottom end  1110 . The bag  1100   d  has a front wall or surface  1108  with top end  1116 , a rear wall or surface  1106 , and two side walls  1102  and  1103 . The first end  1105  of bag  1100   d  has portions  1112   a  and  1112   b  of the rear wall or surface  1108  of the bag that extend further from the body of the bag  1100   d  than do portions  1114   a  and  1114   b  of the material of bag  1100   d  forming the side gussets for sides  1102  and  1103 . In addition, the portions  1114   a  and  1114   b  of the side gussets extend further from the body of the bag  1100   d  than the top end  1116  of the front wall  1108  of the bag  1100   d . As shown in  FIG. 25 , the front wall  1108  of the bag  1100   d  has an end portion  1116  at the first end  1105  of the bag that does not extend as far from the body of the bag  1100   d  as the end portions  1114   a  and  1114   b  of the side gussets or the end portions  1112   a  and  1112   b  of the rear wall of the first end  1105  of the bag  1100   d . In addition, the bottom end  1110  of bag  1100   d  is sealed using a single fold  1109  (in other embodiments this can be a double fold). Bag  1100   d  also comprises an easy open feature  1130  comprising a first cover  1019 , which in this embodiment is proximal to the sealed single  1016  (or double) fold at the bottom end  1110  of the bag  1100   b . The first cover  1019  comprises a first cut  1031  through the first cover  1019  having a first end  1031   a  and a second end  1031   b , a second cut  1032  through the first cover  1019  having a first end  1032   a  and a second end  1032   b , and a third cut  1033  through the first cover  1019  extending from the first cut  1031  to the second cut  1032 . Once again, this particular orientation of cuts is also referred to as an “H” cut. Bag  1100   d  also has a second cover  1135  having a pull tab  1136  that covers the “H” cut. Bag  1100   d  can be opened by pulling the pull tab  1136  thus removing the second cover  1135  from the “H” cut, and pulling the portion of the first cover  1019  on either (or both) end of the third cut  1033 , which exposes weakened area, for example a cut, a series of perforations, or a scoring line, on the front wall  1108  of the bag  1100   c . The weakened area on the front wall  1108  of the bag  1100   c  can be opened with less force than required to open or tear other portions of the bag  1100   c , including, but not limited to, the sealed single  1109  (or double) fold. 
     Those skilled in the art will understand and appreciate that the bag according to the disclosure may vary in size, dimensions, and shape without departing from the scope of the disclosure, and that the foregoing description of the preferred embodiments is not intended to limit the scope of the disclosure as defined by the claims. For example, those skilled in the art will understand and appreciate that the foregoing bag  1  or bag  100  can have sealed and sewn ends in a tubular bag with side gussets as shown, or a block bottom and top, or a combination thereof, although not shown. Those skilled in the art will also appreciate that a weakened portion or area can be provided in a number of ways that may vary from those expressly described and shown, such as by stressing portions of the bag wall with or without deforming, perforating, or cutting same, as well as varying the size, number, depth, and/or pattern of perforations, cuts, and/or deformations in a bag wall. Similarly, those skilled in the art will understand that the bag  1  may be provided with a re-usable opening (not shown) or a corner portion adapted to allow a person to easily pour the contents of the bag  1  out (not shown), or a combination of these two features. Such features are conventional with prior art bags. Similarly, those skilled in the art will appreciate that terms such as “front” and “rear,” and “top” and “bottom,” are useful in describing a bag, but essentially depend on a bag&#39;s orientation when such terms are used, and are therefore not limiting as to a bag&#39;s orientation.