Biodegradable odor barrier film

Patent metadata

Field	Value
Publication number	US-2016058605-A1
Application number	US-201414785804-A
Country	US
Kind code	A1
Filing date	Apr 10, 2014
Priority date	May 17, 2013
Publication date	Mar 3, 2016
Grant date	—

Abstract

A biodegradable odor barrier film for ostomy, continence and bowel management applications includes a barrier layer comprising at least about 90% wt. polyglycolic acid. The biodegradable odor barrier film provides excellent mechanical and odor barrier properties desired in ostomy, continence and bowel management applications.

First claim

1 . A biodegradable odor barrier film for ostomy, continence and bowel management applications, comprising:
a barrier layer comprising a biodegradable resin, the barrier layer having a biodegradability that meets the requirements of ASTM D6400, EN13432 or ISO14855; and the biodegradable odor barrier film having a dimethyl disulfide (DMDS) breakthrough time greater than about 200 minutes when tested according to the modified Test Operations Procedure (TOP) 8-2-501.

2 . The film of claim 1 , wherein the barrier layer comprises polyglycolic acid (PGA) in a concentration greater than about 90 percent by weight (% wt.).

3 . The film of claim 1 , wherein the barrier layer is formed from a blend comprising about 90% wt. to about 99.9% wt. of PGA and a polymeric chain extender.

4 . The film of claim 1 , wherein the barrier layer is formed of about 100% wt. PGA.

5 . The film claim 1 , wherein the barrier layer has a first side and a second side, wherein a first outer layer is disposed on the first side and a second outer layer is disposed on the second side, such that the barrier layer is sandwiched between the first and second outer layers, wherein the first and second outer layers are biodegradable, and the film has a biodegradability that meets the requirements of ASTM D6400, EN13432 or ISO14855.

6 . The film of claim 5 , wherein the first and second outer layers include a biodegradable material selected from the group consisting of starch, starch blends, polyvinyl alcohol, ethylene-vinyl alcohol copolymer, cellulose derivatives, soy protein, polycaprolactone, polylactic acid, copolyester, polyhydroxyalkanoates, and polybutylene succinate.

7 . The film of claim 5 , wherein the first and second outer layers comprise at least 70% wt. of a copolyester based on terephthalic acid, adipic acid, and 1,4-butanediol.

8 . The film of claim 6 , wherein the first and second outer layers further comprises an antiblock agent, a slip agent, and/or a blowing agent.

9 . The film of claim 5 , further comprising first and second tie layers disposed between the barrier layer and the first and second outer layers, respectively, the tie layers formed from a maleated polyolefin or an epoxidized polyolefin, wherein each tie layer contacting a respective side of the barrier layer.

10 . The film of claim 5 , wherein a thickness of the barrier layer makes up about 3% to 20% of a total thickness of the film.

11 . The film of claim 5 , wherein a total thickness of the film is between about 10 μm and about 1,000 μm, and a thickness of the barrier layer is between about 0.5 μm and about 50 μm.

12 . A bowel management tube formed of the film of claim 1 , wherein the film has a total thickness between about 500 μm and 1,000 μm, and the barrier layer has a thickness between about 2 μm and about 50 μm.

13 . An ostomy pouch comprising:
a first side wall and a second side wall, wherein the first and second side walls are formed from a biodegradable odor barrier film having a biodegradability that meets the requirements of ASTM D6400, EN13432 or ISO14855, and a dimethyl disulfide (DMDS) breakthrough time greater than about 1440 minutes when tested according to the modified Test Operations Procedure (TOP) 8-2-501; and a stoma-receiving opening on the first side wall.

14 . The ostomy pouch of claim 13 , wherein the biodegradable odor barrier film includes a barrier layer comprising polyglycolic acid (PGA) in a concentration greater than about 90 percent by weight (% wt.).

15 . The ostomy pouch of claim 14 , wherein the barrier layer is formed from a blend comprising about 90% wt. to about 99% wt. of PGA and a polymeric chain extender.

16 . The ostomy pouch of claim 13 , wherein the barrier layer has a first side and a second side, wherein a first outer layer is disposed on the first side and a second outer layer is disposed on the second side, such that the barrier layer is sandwiched between the first and second outer layers, wherein the first and second outer layers are biodegradable, and the film has a biodegradability that meets the requirements of ASTM D6400, EN13432 or ISO14855.

17 . The ostomy pouch of claim 16 , wherein the first and second outer layers comprise at least 70% wt. of a copolyester based on terephthalic acid, adipic acid, and 1,4-butanediol.

18 . The ostomy pouch of claim 17 , wherein the first and second outer layers further comprises an antiblock agent, a slip agent, and/or a blowing agent.

19 . The ostomy pouch of claim 13 , further including at least one nonwoven layer attached on one or both of the first and second side walls, wherein the nonwoven layer is formed from a biodegradable material.

Assignees

• Hollister Inc

Inventors

• Chang Moh-Ching Oliver

Classifications

• B32B27/20

  using fillers, pigments, thixotroping agents · CPC title

• B32B27/306

  comprising vinyl acetate or vinyl alcohol (co)polymers · CPC title

• B32B2250/40

  Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA · CPC title

• B32B3/06

  for securing layers together; for attaching the product to another member, e.g. to a support {, or to another product, e.g. groove/tongue, interlocking} · CPC title

• B32B27/32

  comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)} · CPC title