Low moisture barrier film
View Patent ↗The present invention relates to a flat, multilayered, low moisture, barrier, laminated thermoplastic film with an absorptive food contact layer coated with a flavoring and/or coloring agent, which can be formed on automatic stuffing machinery into a sealed tube in a continuous manner for use as a food casing. This film has an absorptive food contact layer, an oxygen barrier layer, and a polyethylene outer layer. The coloring and/or flavoring agent on the absorptive layer is released onto the surface of encased foodstuff during cooking and processing.
1. A multilayered film, comprising:
a first outer absorbent layer, comprising:
absorptive material selected from the group consisting of; polyethylene terephthalate (PET) paper; cellulose and polyester blend paper; papers made from noncellulosic materials; and pressed, matted, or felted fibrous papers; and
a solution absorbed within the absorptive material, the solution comprising a peeling aid and a selection from the group consisting of a coloring solution, a flavoring solution, and a coloring and flavoring solution;
a second inner thermoplastic layer comprising an oxygen barrier; and
a third outer thermoplastic layer comprising a moisture barrier and abuse resistant layer,
the Kinetic Coefficient of Friction of the third outer thermoplastic layer to metal being a maximum of 0.425,
the Kinetic Coefficient of Friction of the first outer absorbent layer to metal being a maximum of 0.400,
the Kinetic Coefficient of Friction of the first outer absorbent layer to the third outer thermoplastic layer being a maximum of 0.425,
the multilayered film being a flat film, and
the multilayered film being a dry film with a finished moisture level from 2.0 wt. % to 5.0 wt. % of the multilayered film.
2. The multilayered film of claim 1 , wherein the absorptive material of the first outer absorbent layer comprises the cellulose and polyester blend paper or the polyethylene terephthalate (PET) paper.
3. The multilayered film of claim 1 , wherein the second inner thermoplastic layer comprises a thermoplastic selected from the group consisting of ethylene vinyl alcohol, polyvinylidene chloride, nylon 6, nylon 6/12 copolymer, and nylon 6/66 copolymer.
4. The multilayered film of claim 3 , wherein the second inner thermoplastic layer comprises the nylon 6.
5. The multilayered film of claim 1 , wherein the third outer thermoplastic layer comprises a thermoplastic selected from the group consisting of polyethylene, low density polyethylene, linear low density polyethylene, and blends of low density polyethylene and linear low density polyethylene.
6. The multilayered film of claim 5 , wherein the third outer thermoplastic layer comprises the low density polyethylene.
7. The multilayered film of claim 5 , wherein the third outer thermoplastic layer comprises the linear low density polyethylene.
8. The multilayered film of claim 5 , wherein the third outer thermoplastic layer comprises a blend of the low density polyethylene and the linear low density polyethylene.
9. The multilayered film of claim 1 , wherein the group consisting of the coloring solution, the flavoring solution, and the coloring and flavoring solution consists of liquid smoke solution, caramel solution, and a blend of liquid smoke and caramel solutions.
10. The multilayered film of claim 9 , wherein the solution comprises the peeling aid, liquid smoke, and water, the solution having a pH of from about 4 to about 14.
11. The multilayered film of claim 9 , wherein the solution comprises the peeling aid, caramel, and water, the solution having a pH of from about 2 to about 10.
12. A multilayered film, comprising:
a first outer absorbent layer comprising:
absorptive material selected from the group consisting of polyethylene terephthalate (PET) paper; cellulose and polyester blend paper; papers made from noncellulosic materials; and pressed, matted, or felted fibrous papers; and
a solution absorbed within the absorptive material, the solution comprising a peeling aid and a selection from the group consisting of a coloring solution, a flavoring solution, and a coloring and flavoring solution;
a second inner adhesive layer;
a third inner thermoplastic layer comprising an oxygen barrier;
a fourth inner adhesive layer; and
a fifth outer thermoplastic comprising a moisture barrier and abuse-resistant layer;
the Kinetic Coefficient of Friction of the fifth outer thermoplastic layer to metal being a maximum of 0.425,
the Kinetic Coefficient of Friction of the first outer absorbent layer to metal being a maximum of 0.400,
the Kinetic Coefficient of Friction of the first outer absorbent layer to the fifth outer thermoplastic layer being a maximum of 0.425,
the multilayered film being a flat film, and
the multilayered film being a dry film with a finished moisture level from 2.0 wt. % to 5.0 wt. % of the multilayered film.
13. The multilayered film of claim 12 , wherein the first outer absorbent layer comprises:
the cellulose and polyester blend paper; or
the polyethylene terephthalate (PET) paper.
14. The multilayered film of claim 12 , wherein the third inner thermoplastic layer comprises a thermoplastic selected from the group consisting of ethylene vinyl alcohol, polyvinylidene chloride, nylon 6, nylon 6/12 copolymer, and nylon 6/66 copolymer.
15. The multilayered film of claim 14 , wherein the third inner thermoplastic layer comprises the nylon 6.
16. The multilayered film of claim 12 , wherein the fifth outer thermoplastic layer comprises a thermoplastic selected from the group consisting of polyethylene, low density polyethylene, linear low density polyethylene, and blends of low density polyethylene and linear low density polyethylene.
17. The multilayered film of claim 16 , wherein the fifth outer thermoplastic layer comprises the low density polyethylene.
18. The multilayered film of claim 16 , wherein the fifth outer thermoplastic layer comprises the linear low density polyethylene.
19. The multilayered film of claim 16 , wherein the fifth outer thermoplastic layer comprises a blend of the low density polyethylene and the linear low density polyethylene.
20. The multilayered film of claim 12 , wherein an adhesive of the second inner adhesive layer is the same as an adhesive of the fourth inner adhesive layer.
21. The multilayered film of claim 12 , wherein an adhesive of the second inner adhesive layer is different than an adhesive of the fourth inner adhesive layer.
22. The multilayered film of claim 12 , wherein an adhesive of the second inner adhesive layer and of the fourth adhesive layer is a polyurethane-based adhesive.
23. The multilayered film of claim 12 , wherein the group consisting of the coloring solution, the flavoring solution, and the coloring and flavoring solution consists of liquid smoke solution, caramel solution, and a blend of liquid smoke and caramel solutions.
24. The multilayered film of claim 23 , wherein the solution comprises the peeling aid, liquid smoke, and water, the solution having a pH of from about 4 to about 14.
25. The multilayered film of claim 23 , wherein the solution comprises the peeling aid, caramel, and water, the solution having a pH of from about 2 to about 10.
26. The multilayered film of claim 12 , wherein the peeling aid is selected from the group consisting of waxes.