Wolff Walsrode Ag

Wolff Walsrode Aktiengessellschaft

Ingo Schinkel

Ulrich Reiners

Jurgen Bohner

Anton Krallmann

Heinrich Rosenthal

Thomas Blum

Gunter Eger

Siegfried Thurm

Rudi Klein

Manfred Kowitz

Wolfgang Bair

J/u/ Rgen B/o/ Hner

This invention relates to matt, multilayered propylene films to which their matt appearance is imparted by a one-sided, coextruded layer of a polymer mixture.

Matt biaxially stretched polypropylene film and a process for producing

The invention relates to matt-effect multilayer polypropylene films which acquire their matt appearance from at least one-sided, coextruded layer of a polymer mixture.

Matt-effect, biaxially stretched polypropylene film and a process for

The bonding properties of polyolefin films in composites are improved by a treatment with a low pressure plasma.

Process for the treatment of polyolefin films

Improved heat-laminatable multi-layer film containing a polypropylene base layer, a heat-laminatable layer containing an ethylene/vinyl acetate copolymer and an ethylene/ethyl acrylate or ethylene/acrylic acid copolymer, one layer of the film being a gas barrier layer.

Heat-laminatable, gas-barrier multi-layer films

An improved heat-laminatable, high-glass and high-slip, at least monoaxially stretched multilayer film comprises at least one base layer I consisting essentially of polypropylene, an outer layer II which is thin by comparison with layer I and which consists essentially of polypropylene and an addition of an anti-blocking additive and a heat-activatable, heat-laminatable layer III containing an ethylene/vinyl acetate copolymer A and an ethylene/ethyl acrylate copolymer B1 and/or an ethylene/acrylic acid copolymer B2, the base layer I containing no anti-blocking additives.

Heat-laminatable, high-gloss multilayer films

Multilayered films with a special sealing layer which is applied only to one side have improved properties, in particular improved transparency.

Sealable multilayered films with improved transparency

The new polypropylene film contains a polymer based on polyisobutyl methacrylate and polymethyl methacrylate as antiblocking agent.

Stretched polypropylene films having good surface slip

Process for the production of surface-finished, at least monoaxially stretched, thermoplastic films which are characterized in that the surface coating is imparted by means of slot doctoring systems before at least one stretching stage, and the subsequent stretching is carried out without contact with the surface.

Process for imparting a surface coating to films

Heat-sealable, at least monoaxially orientated multi-layer film of a base layer of a polypropylene and at least one heat-sealable layer of

Heat-sealable multi-layer films of polyolefins

Heat-sealable composite films, stretched at least uniaxially, comprising a base layer, of a propylene polymer, which is provided on at least one of its surfaces with an adhesion promoter layer and a heat-sealable layer of a thermoplastic polyurethane elastomer.

Heat-sealable, stretched composite flims

Multiple-layer films, particularly wrapping films, having a high sealing strength at a low sealing temperature flavorable optical properties and machine compatibility based on a film of propylene polymers and at least one linear ethylene copolymer of low density as the heat sealing layer.

Sealable multilayer polyolefin films

Heat sealable, composite film comprising a polypropylene film, at least one adhesion layer, at least one gas-barrier layer and at least one heat-sealing layer of a linear statistical ethylene copolymer of low density.

Heat sealable multilayer films with low permeability to gas and their

Heatsealable opaque multilayer films, particularly wrapping films, having a high sealing strength, at low sealing temperature, favorable optical properties and machine compatibility based on a film of a propylene polymer and a linear statistical ethylene copolymer of low density as the heat sealing layer.

Opaque, heat sealable multilayer polyolefin films

A composite film comprising a polypropylene basis film being laminated at least on one surface with a layer combination of a heat sealable layer with an additive combination, an adhesion promotion layer, a gas-barrier layer, and an adhesion promotion layer and optionally a further heat sealable layer.

Sealable multilayer films

A sealable multilayer film for packaging comprising a polypropylene film and at least one sealing layer of an ethylene homo- or copolymer wherein the sealing layer contains an additive combination of a long-chain amine, a thermoplastic polymer incompatible with the sealing polymer and a polydialkyl siloxane.

Growing community of inventors

Walsrode, Germany

Ingo Schinkel