Patent ID: 9301869
Filing Date: 2016-04-05
CPC Classification: A61F,A61L,B32B,Y10S,Y10T

Claim Text:
1. A multi-layer, chlorine-free film for use in an ostomy bag or pouch, comprising: a barrier layer having first and second sides, the barrier layer formed from a blend comprising a non-chlorine containing amorphous polyamide resin present in a concentration of about 75 percent to about 95 percent by weight of the barrier layer and a maleic anhydride modified olefin or an epoxy modified olefin, present in a concentration of about 5 percent to about 25 percent by weight of the barrier layer, the barrier layer being substantially impermeable to malodor causing compounds; first and second tie layers, the tie layers comprising a maleic anhydride grafted resin, the resin being one or more of an ethylene-based copolymer, a propylene-based copolymer, an ethylene-octene polymer and a styrene block copolymer, each tie layer contacting a side of the barrier layer, wherein the amount of maleic anhydride is between 0.030% and 0.080% by weight of the tie layer; first and second inner layers, the inner layers comprising one of an ethylene propylene copolymer based resin, an ethylene-octene based resin, and ethylene vinyl acetate, each inner layer contacting a respective tie layer; and first and second outer layers, each outer layer comprising an ethylene vinyl acetate, ethylene methyl acrylate copolymer, or polypropylene-based resins, the outer layers contacting a respective inner layer.