Wolff Walsrode Ag

Bayer Aktiengesellscaft

Ulrich Reiners

Anton Krallmann

Neele Neelen

Rainer Brandt

Ingo Schinkel

Jurgen Bohner

Eberhard Albinus

Michael Hennig-Cardinal Von Widdern

Gunter Weber

Siegfried Thurm

Dirk Schultze

Nicole Hargarter

Sebastian Meyer-Stork

Manfred Kowitz

Helmut Kuhlenkamp

Hermann Hendrickson-Benkhoff

Dietrich Stockmeier

The invention relates to a multi-layer, coextruded, biaxially oriented tubular sausage casing with improved oxygen barrier properties especially for wrapping sausages, which are heat treated after filling.

Multi-layer, coextruded, biaxially oriented tubular sausage casing with

The invention relates to a coextruded, biaxially stretched, tubular film, with at least two adjacent layers made from aliphatic polyamide, for wrapping goods packaged in liquid or paste form, especially foodstuffs, which are subjected to heat-treatment during and/or after being wrapped, such as for example, various types of German sausage, cheese, butter, etc.

Multi-layered plastic casing with two adjacent layers made from

The present invention relates to an oriented, particularly a biaxially oriented, sealable, metallisable multilayer film, characterised in that it is built up as follows:

Multilayer oriented heat-sealable polypropylene film

A single-layered, plastic and elastic thermoplastic hot-melt adhesive film which does not have a separating layer, wherein it can be wound on and off a reel without the use of a supplementary separating material, is essentially free of antiblocking agents and/or lubricants and that the maximum of its thermoanalytically determined main melting peak is below 90.degree. C. and which is essentially formed from at least two olefin copolymers with polar comonomers A and B, wherein ethylene is preferably used as an olefinic monomer, and whose essential comonomers contain oxygen atoms and the essential oxygen-containing comonomers in the olefin copolymers A and B are not identical, wherein the total proportion of oxygen-containing comonomer in the total weight of polymer resin forming the film is between 18 wt. % and 40 wt. % and the proportion of oxygen-containing comonomers in copolymer A is at least 60 wt. % of the total weight of oxygen-containing comonomers and copolymers A and B are mutually degraded under a sufficient shearing force for copolymer B to be present as a finely distributed second phase in copolymer A.

Single-layered hot-melt film adhesive which can be wound on a reel

The present invention relates to a stretched, multilayer, transparent film which is reflection-reduced on at least one side, consists predominantly of polypropylene and is very suitable as window film for envelopes.

Reflection-reduced, bondable stretched film as window film for envelopes

At least monoaxially stretched polypropylene film containing an antiblocking agent, wherein the antiblocking agent has a cuboid and/or cubic, preferably cubic, geometry with bevelled, i.e. chamfered, edges and is X-ray amorphous.

Transparent, stretched polypropylene film

The invention relates to the lacquering of polar film substrates with a coating system consisting of several components, the single application of material resulting in a multilayer structure of the lacquer coat. The coating system is preferably aqueous and free from organohalogen and results in an improved barrier action of the films against water vapor.

Multilayer lacquering of polar film substrates by a single application

The invention relates to a white-opaque biaxially orientated multilayer film with good heat-sealing properties and with a paper-like appearance on at least one side, comprising an opaque core and at least one outer layer made of:

Paper-like white-opaque heat-sealable polypropylene film

The invention relates to oriented, sealable polypropylene film combining an improved water vapor barrier effect with a considerably reduced coefficient of friction for packaging purposes, characterized in that they are free from polydimethyl siloxane and have the following structure: A B C B A where a) C is the core layer consisting of polypropylene and a hydrocarbon resin, which has a molecular weight of up to about 2000 g/mol and a softening point above 130.degree. C., and 0.05 to 0.5% by weight erucic acid amide, b) the B's are two jacket layers of highly isotactic polypropylene (isotacticity &gt;94%) free from hydrocarbon resin, the ratio between the thickness of the jacket layer and the thickness of the base layer being between 0.01 and 0.1, c) the A's are two surface layers of a heat-sealable polyolefin copolymer or terpolymer, these surface layers containing at least one antiblocking agent, an antistatic agent and, as lubricant, 0.05 to 0.5% by weight erucic acid amide.

Multilayer, stretched heat-sealable polypropylene film combining good

The invention relates to sealable polypropylene films having an improved water vapor barrier effect through the following layer structure:

Multilayer, stretched heat-sealable polypropylene film

The invention relates to an oriented sealable polypropylene film combining an improved water vapor barrier effect with considerably reduced global migration for packaging purposes and having the following layer structure:

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.

Growing community of inventors

Neuenkirchen, Germany

Ulrich Reiners