IP Library Granted Patent US 7,273,629
Granted Patent B2
US 7,273,629 · App. 09/992,271 · Granted Sep 25, 2007

Meat package with reduced leaker rates

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Quick Facts
Patent No.
US 7,273,629
App. No.
09/992,271
Granted
Sep 25, 2007
Kind
B2
Abstract

A packaged product has a food product having an added liquid thereon, and a packaging article at least partially surrounding the food product. The packaging article having a seal layer comprising a member selected from the group consisting of a slip agent and a surfactant. The slip agent or surfactant causes contamination from the added liquid to bead up or wet out, respectively, thereby permitting heat sealing through the contamination with a lower leaker rate than would otherwise be the case.

Claims (28)

1. A packaged product comprising:

(A) a meat product having an added liquid thereon, the added liquid comprising brine;

(B) a packaging article surrounding the meat product and the added liquid, with atmosphere having been evacuated from between the meat product and the packaging article, the packaging article having a seal layer comprising a slip agent, and wherein the packaging article is made from an end-seal bag or a side-seal bag; said slip agent being present in an amount sufficient to provide the ability to heat seal through contamination of said heat seal layer caused by said added liquid, and sufficient to reduce leaker rates compared to the leaker rate of a packaging article having heat seal layers that do not comprise the slip agent.

2. The packaged product according to claim 1 , wherein the seal layer comprises the slip agent in an amount of from about 300 to 6000 ppm.

3. The packaged product according to claim 1 , wherein the seal layer comprises the slip agent in an amount of from about 600 to 4500 ppm.

4. The packaged product according to claim 1 , wherein the seal layer comprises the slip agent in an amount of from about 1200 to 3000 ppm.

5. The packaged product according to claim 1 , wherein the slip agent comprises a fatty amide.

6. The packaged product according to claim 5 , wherein the slip agent comprises a primary fatty amide.

7. The packaged product according to claim 1 , wherein the seal layer contains a heterogeneous ethylene/alpha-olefin copolymer having a density of from about 0.85 to 0.95 g/cc.

8. The packaged product according to claim 7 , wherein the heterogeneous ethylene/alpha-olefin copolymer has a melt index of from about 0.1 g/10 min to about 10 g/10 min.

9. The packaged product according to claim 1 , wherein the seal layer contains a homogeneous ethylene/alpha-olefin copolymer having a density of from about 0.85 to 0.95 g/cc.

10. The packaged product according to claim 9 , wherein the homogeneous ethylene/alpha-olefin copolymer has a melt index of from about 0.1 g/10 min to about 10 g/10 min.

11. The packaged product according to claim 1 , wherein the seal layer is free of antiblock particulates on the surface thereof.

12. The packaged product according to claim 1 , wherein the packaging article comprises a film having a total free shrink of from 10 to about 150 percent at 185° F.

13. The packaged product according to claim 1 , wherein the packaging article comprises a film having a total free shrink of less than 10 percent at 185° F.

14. The packaged product according to claim 1 , wherein the packaging article comprises a film having the seal layer, the film having a thickness of from about 0.1 to 20 mils.

15. The packaged product according to claim 1 , wherein the packaging article comprises a sheet having the seal layer, the sheet having a thickness of from about 5 to 600 mils.

16. The packaged product according to claim 15 , wherein the sheet is a rigid non-foam sheet having a thickness of from about 10 to 60 mils.

17. The packaged product according to claim 15 , wherein the sheet is a foam sheet having a thickness of from about 50 to 400 mils.

18. The packaged product according to claim 1 , wherein the meat comprises at least one member selected from the group consisting of pork and beef.

19. The packaged product according to claim 1 , wherein the added liquid is present in an amount of from about 1 percent to 50 percent, based on the weight of the product.

20. The packaged product according to claim 1 , wherein the seal layer comprises at least one member selected from the group consisting of polyolefin, polyamide, polyester, polyvinyl chloride, and ionomer.

21. The packaged product according to claim 1 , wherein product comprises brine-injected fresh meat, and the packaging article comprises a film which has been shrunk against the fresh meat.

22. The packaged product according to claim 1 , wherein the seal layer comprises a fatty amide slip agent comprising at least one member selected from the group consisting of primary fatty acid, secondary fatty amide, tertiary fatty amide, and fatty bisamide.

23. The packaged product according to claim 22 , wherein the fatty amide slip agent comprises at least one member selected from the group consisting of erucamide, behenamide, oleamide, lauramide, stearamide, N,N′-ethylene bis-stearamide.

24. The packaged product according to claim 22 , wherein the seal layer further comprises an antiblocking agent.

25. The packaged product according to claim 24 , wherein the antiblocking agent comprises at least one member selected from the group consisting of corn starch, potato starch, and tapioca starch.

26. The packaged product according to claim 1 , wherein the seal layer comprises at least one slip agent selected from the group consisting of fatty amide, fatty acid, fatty acid metal salt, fluorinated fatty acid, fluorinated fatty alcohol, fatty ester, petroleum wax, vegetable wax, animal wax, cellulose derivative, polysaccharide, silicone, fluorocarbon, fluoropolymer, and polyolefin wax.

Assignments (3)
SECURITY INTEREST Recorded Oct 31, 2025
From: SEALED AIR CORPORATION
To: BANK OF AMERICA, N.A., AS AGENT
Reel/Frame 072752/0143 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 22, 2003
From: MUDAR, KIMBERLY ANN; WOFFORD, GEORGE DEAN
To: CRYOVAC, INC.
Reel/Frame 014510/0066 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 16, 2001
From: MUDAR, KIMBERLY ANN; WOFFORD, GEORGE DEAN
To: SEALED AIR CORPORATION
Reel/Frame 012330/0347 →