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US 10,583,029 B2Granted
Biodegradable odor barrier film
AssigneeHollister Incorporated
InventorMoh-Ching Oliver Chang
Life of this patent
Estimating the term…
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.
Claims8
A biodegradable odor barrier film for ostomy, continence and bowel management applications, comprising:
- a barrier layer comprising polyglycolic acid (PGA) in a greater than about 90 percent by weight (% wt.), wherein the barrier layer has a first side and a second side and a biodegradability that meets the requirements of ASTM D6400, EN13432 or ISO14855;
- a first outer layer 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 comprise at least 70% wt. of an aliphatic-aromatic copolyester based on terephthalic acid, adipic acid, and 1,4-butanediol, wherein the aliphatic-aromatic copolyester is biodegradable to terephthalic acid, adipic acid, and 1,4-butanediol and meets the requirements of ASTM D6400, EN13432;
- 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 more elements
A biodegradable odor barrier film for ostomy, continence and bowel management applications, comprising:
- a barrier layer formed from a blend comprising about 90% wt. to about 99.9% wt. of PGA and a polymeric chain extender, wherein the barrier layer has a first side and a second side and a biodegradability that meets the requirements of ASTM D6400, EN13432 or ISO14855;
- a first outer layer 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 comprise at least 70% wt. of an aliphatic-aromatic copolyester based on terephthalic acid, adipic acid, and 1,4-butanediol, wherein the aliphatic-aromatic copolyester is biodegradable to terephthalic acid, adipic acid, and 1,4-butanediol and meets the requirements of ASTM D6400, EN13432;
- 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 more elements
Dependencies are inferred from the claim text.