초록 ▼

A multilayer heat-sealable chlorine-free film of relatively low modulus, high interlaminar strength, and low noise upon flexing is provided. The film comprises an odor barrier layer of polyester resin and at least one heat-sealable skin layer, preferably two such skin layers on opposite sides of sai

A multilayer heat-sealable chlorine-free film of relatively low modulus, high interlaminar strength, and low noise upon flexing is provided. The film comprises an odor barrier layer of polyester resin and at least one heat-sealable skin layer, preferably two such skin layers on opposite sides of said odor barrier layer, composed of a homopolymer of ethylene or a copolymer of ethylene and an alpha-olefin or an ester-containing monomer. In a preferred embodiment, the odor barrier layer is formed of polyethylene terephthalate and adhesive tie layers are interposed between the odor barrier layer and the skin layers, resulting in a multilayer film of five layers. Pouches formed of such multilayer films are also disclosed.

대표청구항 ▼

[ What is claimed is:] [6.]6. An ostomy pouch having two side walls each being formed of a multilayer chlorine-free film having an odor barrier layer coextruded with two heat-sealable skin layers on opposite sides of said odor barrier layer; said skin layers of said walls facing each other and being

[ What is claimed is:] [6.]6. An ostomy pouch having two side walls each being formed of a multilayer chlorine-free film having an odor barrier layer coextruded with two heat-sealable skin layers on opposite sides of said odor barrier layer; said skin layers of said walls facing each other and being heat sealed together along peripheral edge portions of said pouch; said odor barrier layers of said walls being composed of coextrudable polyethylene terephthalate resin and said skin layers comprising an ethylene polymer or copolymer with an alpha-olefin or ester-containing monomer; each of said walls having no more than five layers in total and including a coextruded intermediate adhesive tie layer of anhydride-modified ethylene acrylate copolymer between said odor barrier layer and each of said skin layers.