Mobil Oil Corporation

Milton L Weiner

Thomas W Higgins

Peter Breidt, Jr

A Michael Nahmias

The present invention relates to heat sealable laminar thermoplastic films which may be heat sealed over a wide range of temperatures. The resultant heat seals exhibit a high heat seal strength. Such laminar structures comprise at least two layers of thermoplastic film, one of the layers being an oriented base layer and the other layer a heat sealable skin layer. Preferably the base layer is an alpha olefin such as polypropylene or copolymers thereof and the skin layer is preferably a linear, low-density polyethylene copolymer, comprising ethylene which has been copolymerized with another alpha olefin in the presence of a stereospecific catalyst.

Oriented polypropylene with linear low density poly-ethylene copolymer

A process for enhancing the degree of bloom of a polymer film structure containing a surface-modifying agent and the film structure resulting therefrom.

Highly stereoregular films of improved surface characteristics and

A flexible film laminate and retortable pouch therefrom comprising a first layer of heat-sealable polyolefin film; a syndiotactic poly-1,2-butadiene adhesive be bonding said first layer to a second layer of polyacrylonitrile homopolymer film; said laminate having been subjected to conditions sufficient to effect the generation of free radicals in the system to an extent resulting in greater bond strength between layers than in the absence of said conditions.

Flexible film laminate and retortable food pouch therefrom

Multiple layer, heat sealable films are described comprising a substrate layer of polypropylene homopolymers or copolymers, or blends thereof with compatible polyolefins, and at least one heat sealable surface layer of a blend of a copolymer of ethylene and a higher olefin, and a copolymer of propylene and a higher olefin. The films are prepared by extrusion coating or coextrusion and can be oriented.

Heat sealable packaging film comprising propylene polymer substrate and

Multiple-layer, heat-sealable films are described comprising a substrate layer of polypropylene homopolymer or copolymer, or blends thereof with compatible polyolefins; and at least one heat-sealable surface layer of a blend poly(1-butene), and a copolymer of ethylene or propylene and a higher olefin. The films are prepared by extrusion coating or coextrusion and can be oriented.

Multiple-layer, heat sealable films are described comprising a substrate layer of polypropylene homopolymer or copolymer, or blends thereof with compatible polyolefin, and a copolymer of ethylene and a higher olefin, and a copolymer of propylene and a higher olefin. The films are prepared by extrusion coating or coextrusion and can be oriented.

Multiple-layer, heat-sealable films are described comprising a substrate layer of polypropylene homopolymer or copolymer, or blends thereof with compatible polyolefins; and at least one heat-sealable surface layer of an interpolymer of propylene and two different higher alpha-olefins; a copolymer of butene-1 and a higher alpha-olefin or an interpolymer of ethylene, propylene and a higher olefin. The films are prepared by extrusion coating or coextrusion and can be oriented.

Multiple-layer, heat-sealable films comprising a substrate layer of polypropylene homopolymer or polypropylene copolymer, or blends thereof with compatible polyolefins; and at least one heat-sealable surface layer of a blend comprising a copolymer of ethylene and a higher olefin, and a different copolymer of higher olefins. The films are prepared by extrusion coating or coextrusion and can be oriented.

Multiple-layer, heat-sealable films are described comprising a substrate layer of polypropylene homopolymer or copolymer, or blends thereof with compatible polyolefins; and at least one heat-sealable surface layer of a blend of a copolymer of ethylene and a higher olefin, and a copolymer of propylene and a higher olefin. The films are prepared by extrusion coating or coextrusion and can be oriented.

Growing community of inventors

Rochester, NY, United States of America

Milton L Weiner