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US 11,406,741 B2Granted
Odor barrier film
AssigneeHollister Incorporated
InventorsMoh-Ching Oliver Chang, George J. Cisko
Life of this patent
Estimating the term…
Abstract
A multilayer film for ostomy and bowel management applications includes a barrier layer comprising at least about 90% wt. nylon 6/69. The multilayer film provides excellent mechanical and odor barrier properties, and softness and quietness desired in ostomy and bowel management applications.
Claims16
A multi-layer, chlorine-free film for ostomy and bowel management applications, comprising:
- a barrier layer having first and second sides, the barrier layer comprising a low melt polyamide resin having a melting temperature between about 125° C. and about 135° C. present in a concentration of about 90 percent to about 100 percent by weight (% wt.) of the barrier layer, the barrier layer being substantially impermeable to malodor causing compounds;
- and
- first and second outer layers, each outer layer formed from an ethylene vinyl acetate or ethylene methyl acrylate copolymer and blends thereof, or polypropylene-based resins and blends thereof, wherein each outer layer is arranged on a respective side of the barrier layer.
An ostomy pouch formed of a multilayer film, the multilayer film comprising:
- a barrier layer having first and second sides, the barrier layer comprising a low melt polyamide resin having a melting temperature between about 125° C. and about 135° C. present in a concentration of about 90 percent to about 100 percent by weight (% wt.) of the barrier layer, the barrier layer being substantially impermeable to malodor causing compounds;
- first and second tie layers, the tie layers being 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;
- and
- first and second outer layers, each outer layer comprising an ethylene vinyl acetate or ethylene methyl acrylate copolymer and blends thereof, and polypropylene-based resins and blends thereof, wherein each tie layer is arranged between the barrier layer and a respective outer layer.
1 more element
Dependencies are inferred from the claim text.