The present invention relates to a chlorine-free multilayer film material comprising a) a gas-barrier layer (1) comprising a non-chlorine containing organic polymer which is substantially impermeable to oxygen gas; b) two tie layers (2) each contacting one side of said barrier layer; c) an inner surface layer (3); d) an outer surface layer (4); and e) two intermediate layers (5) positioned between said surface layers (3,4) and said tie layers (2), said barrier layers (5) comprising an ethylene-propylene copolymer having a flexural modulus of less than 200 MPa and preferably less than 150 MPa. a process for the manufacture of this film material and its use for the manufacture of bags and pouches for ostomy/urostomy use.
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.
A multilayer heat-sealable chlorine-free film of relatively low modulus, high interlaminar strength, and low noise upon flexing is provided. The film includes an odor barrier layer and at least one directly adjoining heat-sealable skin layer. The barrier layer is composed of either an aliphatic or partially aromatic polyamide resin, or a blend thereof, blended with an ionomer resin consisting essentially of a partially neutralized ethylene-methacrylic acid copolymer, and the heat-sealable skin layer or layers bonded directly to the barrier layer are composed of copolymers of ethylene and an ester-containing comonomer. High resistance to delamination of the barrier layer and skin layer(s) is achieved without tie layers therebetween. Pouches formed of such multilayer chlorine-free films are also disclosed.
A multilayer heat-sealable chlorine-free odor barrier film having relatively low modulus, high interlaminar strength, and low noise upon flexing is provided. The film comprises an odor barrier layer of an amorphous polyamide resin blended with an anhydride-modified olefinic polymer or copolymer. The film also includes at least one heat-sealable skin layer, preferably two such skin layers on opposite sides of said odor barrier layer, composed of an ethylene polymer or copolymer. Pouches formed of such multilayer films are also disclosed.
Disclosed are multi-layer thermoformable film constructions. At least one layer of the multi-layer construction is a polymer blend of: (a) 40 95% by weight of an ethylene-acrylic acid or methacrylic acid copolymer or of an ethylene-acrylic acid or methacrylic acid-alkyl acrylate or alkyl methacrylate copolymer with 30 70% of the acid groups of the acrylic acid or methacrylic acid of either copolymer neutralized with metal ions, and (b) 5 60% by weight of a metallocene catalyzed linear polyethylene.
There is provided a nurser liner having a closure member for selectively sealing the liner. The nurser liner limits the transmission of oxygen and/or UV rays into the inner volume of the liner.
