Cellulosic article containing an olefinic oxide polymer and method of manufacture

• US 5,358,765 A
• Filed: 10/25/1994
• Issued: 10/25/1994
• Est. Priority Date: 03/04/1992
• Status: Expired due to Fees

• Current Assignee: Viskase Corporation (Viskase Companies Incorporated)
• Original Assignee: Viskase Corporation (Viskase Companies Incorporated)
• Inventors: Markulin, John
• Primary Examiner(s): Robinson, Ellis P.
• Assistant Examiner(s): DYE, RENA
• Application Number:
  US08/015,751
• Time in Patent Office: Days
• Field of Search: 428/34.8, 426/105, 426/90, 426/92, 426/127, 426/129, 138/118.1, 264/190, 264/191, 264/192, 264/193, 264/194
• US Class Current: 428/34.8
• CPC Class Codes: A22C 13/0013 Chemical composition of synthetic sausage casings
• CPC Class Codes: A22C 2013/0096 cellulosic
• CPC Class Codes: Y10T 428/1324 Flexible food casing [e.g., sausage type, etc.]

Abstract

A tubular cellulosic casing comprising cellulose or a cellulose derivative which has incorporated therewith a polyethylene oxide composition having a molecular weight of at least 70,000 and a method of manufacturing the same.

Claims

1. A cellulosic tubular food casing containing an olefinic oxide polymer uniformly dispersed through the tube wall in admixture with the cellulose and in sufficient quantity so that the olefinic oxide polymer-to-cellulose weight ratio is at least about 1:

200, and wherein said olefinic oxide polymer has an average molecular weight of at least about 70,000.

2. An article according to claim 1 wherein said olefinic oxide polymer is a homopolymer.

3. An article according to claim 1 wherein the weight ratio of olefinic oxide polymer to cellulose is less than about 1:

9.

4. An article according to claim 1 wherein the tube does not contain fiber reinforcement.

5. An article according to claim 1 wherein the tube contains fiber reinforcement.

6. An article according to claim 1 wherein the article is shirred.

7. An article according to claim 1 wherein the article contains no polyhydric alcohol softening agent.

8. An article according to claim 1 wherein the article is a multilayer film.

9. An article according to claim 2 wherein said homopolymer is poly(ethylene oxide).

10. An article according to claim 9 wherein said article contains no more than about 5 weight % polyhydric alcohol softening agent on a bone dry basis.

11. An article according to claim 9 wherein said poly(ethylene oxide) has an average molecular weight of about 100,000.

12. An article according to claim 3 wherein the weight ratio of olefinic oxide polymer to cellulose is between about 1:

20 and 1;

100.

13. An article according to claim 8 wherein the interior surface layer of the tube contains said olefin oxide polymer and at least one other layer is free of olefin oxide polymer.

14. A casing according to claim 1 wherein said casing contains less than 5% by weight of polyol.

15. A casing according to claim 1 wherein said casing has liquid smoke incorporated therein.

16. A casing as defined in claim 1 wherein said casing tube wall thickness is between 0.7 to 2.0 mils.

17. A casing according to claim 1 wherein said casing has a circumference of at least 4.4 cm.

18. A casing according to claim 1 wherein said casing has a circumference of at least 10.4 cm.

19. A casing according to claim 1 wherein said casing has a circumference of between about 4.9 and 9.7 cm.

20. A casing according to claim 1 wherein said casing has a circumference of between about 10.4 and 54.9 cm.

21. A casing according to claim 1 wherein said tubular casing comprises a tube having an interior surface coated with a transferable edible colorant.

22. A casing according to claim 6 wherein said tubular casing comprises a tube having an interior surface coated with a peeling aid composition in an amount effective to promote peeling, wherein said peeling aid composition comprises a release agent and an anti-pleat lock agent.

23. A casing according to claim 22 wherein said peeling aid composition further comprises a surfactant.

24. A casing according to claim 22 wherein said release agent comprises a salt of carboxymethylcellulose.

25. A casing according to claim 22 wherein said peeling composition comprises a water soluble cellulose ether, a phospholipid and a polyol.

26. A casing according to claim 22, wherein said release agent is selected from the group consisting of water-soluble cellulose or their salts, dextrin, casein, alginates, lecithin, chitosan, a phospholipid, or mixtures thereof.

27. A casing according to claim 26, wherein said anti-pleat lock agent comprises an oil or phospholipid.

28. An article, as defined in claim 1, wherein said molecular weight is at least 90,000.

29. An article, as defined in claim 1, wherein said molecular weight is between about 100,000 and 4,000,000.

30. An article, as defined in claim 1, wherein said molecular weight is between 90,000 and 200,000.

31. An article, as defined in claim 1, wherein said molecular weight is less than 1,000,000.

32. A nonreinforced tubular cellulosic food casing in shirred form and without a polyhydric alcohol softening agent but containing poly(ethylene oxide) of greater than about 70,000 molecular weight and being uniformly dispersed through the tube wall in admixture with the cellulose and in sufficient quantity so that the poly(ethylene oxide)-to-cellulosic weight ratio is between about 0.5:

95 and 5;

95.

33. An article according to claim 32 wherein said article comprises a film having a moisture content less than about 35% by weight bone dry gauge, and a film thickness less than 23 microns.

34. An article according to claim 32 wherein said article comprises a shirred film of at least 190 feet.

35. An article according to claim 32 wherein said article comprises a shirred film of at least 210 feet.

36. An article according to claim 32 wherein said article comprises a shirred film of at least 230 feet.