Inner laminated woven bag for food packaging

Abstract

The composite bag of the present invention generally comprises a multi-layered, inner laminated woven bag for bulk packaging of food products, particularly rice and grain products. The composite bag of the present invention generally comprises a top outer layer made of a polymer film and further comprising an anti-skid coating on one surface and reverse printed matter on its opposing surface; a middle layer comprising a polymer woven layer; a base inner-barrier layer comprising a polymer film that forms the interior liner of the composite bag; and a plurality of holes formed by the top outer layer, the middle layer, and the base inner-barrier layer. The layers of the present invention can be adhesively laminated to each other.

Claims

1. A composite food packaging bag comprising a front side being generally rectangular and planar and a back side being generally rectangular and planar, the front side disposed opposite the back side, wherein the front side is connected to the back side along two parallel side edges; the two parallel side edges each including a gusset; the gusset including a front folded portion connected to the front side, and a rear folded portion connected to the rear side, the gusset also including a plurality of air holes arranged in a single line parallel to the side edges and penetrating the front side, the front folded portion, the rear folded portion and the rear side, wherein the plurality of air holes have a diameter of between 0.01 and 0.1 inches; the composite food packaging bag including a first end edge and a second end edge, the composite food packaging bag being open along a second end edge to define an opening between the front side and the back side to an interior portion of the composite food packaging bag, the front side, the rear side and the gusset each including: a base inner-barrier layer, said base inner-barrier layer including a continuous polymeric film layer; a middle layer including a polymer woven layer comprising plastic resin strips forming a woven structure, the inner barrier layer being bonded completely coextensively to the woven structure; and a top outer layer laminated to said middle layer, said top outer layer including a polymer film, wherein the bag is configured to lay flat prior to being filled with a food product and wherein the base inner-barrier layer of the front side faces the base inner-barrier layer of the front folded portion in the gusset.

2. The composite food packaging bag of claim 1, wherein each of said plurality of air holes being defined by a peripheral edge that is defined by said base inner-barrier layer, said middle layer, and said top outer layer.

3. The composite food packaging bag of claim 1, wherein said top outer layer further includes a first outer surface, said first outer surface further comprising an anti-skid coating or lamination.

4. The composite food packaging bag of claim 1, wherein the top outer layer includes reverse printed matter.

5. The composite food packaging bag of claim 4, wherein the reverse printed matter is disposed between the top outer layer and the middle layer.

6. The composite food packaging bag of claim 1, wherein the base layer is constructed of a food safe material.

7. The composite food packaging bag of claim 1, wherein said plurality of air holes are defined by a peripheral edge defined by said gusseted base inner-barrier layer, said gusseted middle layer, and said gusseted top outer layer.

8. The composite food packaging bag of claim 1, wherein said middle layer further includes film-forming plastic resin strips woven together to form a net-like structure.

9. A composite food packaging bag comprising: a front side and a back side, the front side and the back side together defining an interior volume, side edges including gussets connecting the front side to the back side, the gussets including a front folded portion connected to the front side, and a rear folded portion connected to the rear side, the gussets also including a plurality of air holes arranged in a single line parallel to the side edges and disposed through the front side, the front folded portion, the rear folded portion and the rear side, wherein the plurality of air holes have a diameter of between 0.01 and 0.1 inches; the front side, the back side and the side edges including gussets comprising: a base layer including a polymer film; an intermediate layer including a polymer woven layer comprising plastic resin strips forming a woven structure, the base layer being bonded completely coextensively with the woven structure; a top layer disposed outwardly with respect to the intermediate layer and including a top polymer film, the composite food packaging bag having an outer surface and an inner surface, wherein the base layer substantially defines an internal surface of the composite food packaging bag and the top layer substantially defines an external surface of the composite food packaging bag, wherein the base layer of the front side faces the base layer of the front folded portion and wherein the base layer of the back side faces the base layer of the back folded portion.

10. The composite food packaging bag of claim 9, wherein at least one of the front and back sides defines a plurality of holes therethrough, each hole having a peripheral edge defined by the base layer, the intermediate layer, and the top layer.

11. The composite food packaging bag of claim 10, wherein each of the plurality of holes is disposed adjacent to one of the gusseted edges.

12. The composite food packaging bag of claim 10, wherein the top outer layer includes reverse printed matter, and wherein the reverse printed matter is disposed between the top outer layer and the middle layer.

13. The composite food packaging bag of claim 9, wherein the top layer includes an anti-skid coating or lamination provided along the outer surface of the polymer film.

Description

DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 depicts a perspective view of the multi-layer composite structure of the present invention.

(2) FIG. 2 depicts a cross section of the multi-layer composite structure of the present invention.

(3) FIG. 3 depicts a perspective view of the present invention with a plurality of breathing holes or air holes formed in the gusseted edges of the composite bag. The number of breathing holes or air holes can be added or reduced depending on the characteristics and needs of the inner contents.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

(4) As depicted in FIG. 1, the composite bag 100 of the present invention generally comprises a base inner-barrier layer 101, preferably comprised of a polymer film; a middle layer 102, preferably comprised of a polymer woven layer; and a top outer layer 103, preferably comprised of a polymer film. As further depicted in FIG. 1, preferably, a plurality of air holes 104 is formed through the base inner-barrier layer 101, the middle layer 102, and the top outer layer 103 to help the contents of the bag retain a desired equilibrium relative humidity with the atmosphere as well as control the internal oxygen level of the bag.

(5) As depicted in FIG. 2, the top outer layer 203 of the composite bag of the present invention preferably comprises an anti-skid coating or lamination on its first outer surface 205, and reverse printed matter on its second inner surface 206. As used herein, the term printed matter may include graphics, product information, logos and the like. The middle layer 202 is then laminated to the second inner surface 206 of the the top outer layer 203 to provide a composite, wherein the printed matter is sandwiched between the the top outer layer 203 and the middle layer 202. As further depicted by FIG. 2, the base inner-barrier layer 201 is laminated to the middle layer 202 so that the base inner-barrier layer 201 forms the interior liner of the composite bag and therefore comes into contact with and protects the contents of the bag.

(6) In preferred embodiments of the present invention, the base inner-barrier layer 201, middle layer 202, and top outer layer 203 can be adhesively laminated to one another. In another embodiment of the present invention, the middle layer 202 is preferably a polymer woven layer comprised of suitable film-forming plastic resin strips interlaced or weaved together to form a net-like structure.

(7) As depicted in FIG. 3, once the middle layer 202 is laminated with the base inner-barrier layer 201 and top outer layer 203, the edges of the composite structure can be gusseted.

(8) As further depicted in FIG. 3, the composite bag of the present invention preferably comprises a plurality of air holes 301 punched through the plurality of composite layers as described above. The number of breathing holes or air holes can be added or reduced depending on the characteristics and needs of the inner contents. As further depicted in FIG. 3, the gusseted edges 302 of the resulting composite bag are then punched with one or more breathing holes or air holes which are preferably between 0.01 inches to 0.1 inches in diameter.

(9) The foregoing description of possible embodiments consistent with the present invention does not represent a comprehensive list of all such implementations or all variations of the implementations described. The description of only some implementation should not be construed as an intent to exclude other implementations. For example, one of ordinary skill in the art will understand how to implement the invention in many other ways, using equivalents and alternatives that do not depart from the scope of the invention. Moreover, unless indicated to the contrary in the preceding description, none of the components described in the implementations are essential to the invention.