Patent ID: 11896516
Assignee: HOLLISTER INCORPORATED
Field: Medical technology (Instruments)
Classification: CPC A  Y | IPC A

Claim 0:
1. An asymmetric multilayer film for an ostomy pouch consisting essentially of a seal layer/inner layer/tie layer/barrier layer/outer layer construction;
wherein the seal layer is formed from a blend comprising ethylene vinyl acetate copolymer (EVA) and ethylene-propylene copolymer (EP copolymer), the inner layer is formed from a blend comprising EP copolymer and polypropylene/ethylene-propylene rubber (PP-EP rubber), the tie layer is formed from a maleated ethylene methyl acrylate copolymer (EMA-MAH), the barrier layer is formed from a blend comprising an amorphous polyamide and a functionalized rubber compound, and the outer layer is formed from EMA-MAH; and
wherein a combined thickness of the seal layer, the inner layer, and the tie layer is at least two times greater than a thickness of the outer layer.