Hoechst Aktiengesellschaft

Hoecht Ag

Hoechst Trespaphan Gmbh

Adolf Wilhelm

Ursula Murschall

Thomas Dries

Herbert Peiffer

Dieter Scheidecker

Gunter Schloegl

Michael Schreck

Detlef E Schuhmann

Harald Lohmann

Wolfgang Meyer

Klaus Thoeren

Rudolf Mauer

Brigitte Kusch

Detlef E Schumann

Detlef E Schulhmann

Lothar Hoppenstein

A multilayer polyolefin film comprising of at least three coextruded layers comprising an opaque base layer, an intermediate layer, and an outer peelable surface layer composed of two incompatible polyolefins, wherein the intermediate layer contains at least 80% by weight of a polyolefin having a lower melting point or lower glass transition temperature than the polyolefin forming the base layer.

Peelable, heat-sealable, multilayered polyolefin film, process for the

A coextruded, biaxially orientated film comprising a base layer, which comprises a polypropylene or a polypropylene mixture, and at least one top layer comprising olefinic polymers. The top layer comprises a combination of inorganic and/or organic particles and tertiary aliphatic amine of the formula I ##STR1## in which R.sup.1 essentially is an at least partially unsaturated alkyl radical having at least 18 carbon atoms or an essentially completely saturated alkyl radical having 8 to 26 carbon atoms and

Biaxially orientated polpropylene multilayer film, process for its

This invention provides a polyolefinic multilayer film which has a base layer containing polypropylene and at least one outer layer. The outer layer contains at least 50% by weight of a propylene/butylene resin composition. The propylene/butylene resin composition has a low degree of crystallinity and is modified by a surface treatment, e.g. corona treatment. The surface treatment raises the minimum heat-sealing temperature to the range of 85.degree. to 110.degree. C. and unexpectedly reduces the film's tendency to block. The resulting multilayer film is useful in packaging.

Low temperature heat sealable biaxially oriented polypropylene films

Heat-sealable, white-opaque, biaxially oriented, multilayer polypropylene film, process for the production thereof, and the use thereof. The invention relates to a heat-sealable, white-opaque, biaxially oriented, multilayer polypropylene film comprising a core layer and at least one interlayer arranged there.

Heat-sealable, white-opaque, biaxially oriented, multi-layer

The invention relates to a peelable, oriented, opaque, multilayer polyolefin film comprising at least one opaque layer and a peelable top layer. All layers of the film are essentially vacuole-free. The opaque layer contains pigments having a mean particle diameter of from 0.01 to 1 .mu.m.

Peelable, heat-sealable, multilayer polyolefinic film, process for the

The invention relates to an opaque, matte, multilayer polypropylene film. It includes at least one base layer comprising polypropylene or a polypropylene mixture and fillers, and at least one outer layer which contains a mixture or a blend of two components I and II. Component I essentially contains a propylene homopolymer or a copolymer of an .alpha.-olefin having 2 to 10 carbon atoms or a terpolymer of an .alpha.-olefin having 2 to 10 carbon atoms or a mixture of two or more of said homopolymers, copolymers and terpolymers or a blend of two or more of said homopolymers, copolymers and terpolymers. Component II essentially contains an HDPE having an MFI (50 N/190.degree. C.) of from greater than 1 to 50 g/10 min, measured in accordance with DIN 53 735, or a blend of two components A and B. Blend component A is essentially an HDPE having an MFI (50 N/190.degree. C.) of from greater than 1 to 50 g/10 min, measured in accordance with DIN 53 735. Blend component B is essentially a propylene homopolymer or a copolymer of an .alpha.-olefin having 2 to 10 carbon atoms or a terpolymer of an .alpha.-olefin having 2 to 10 carbon atoms or a mixture of two or more of said homopolymers, copolymers and terpolymers or a blend of two or more of said homopolymers, copolymers and terpolymers. The invention also relates to a process for the production of the multilayer polypropylene film and to the use of the film.

Opaque, matte, biaxially oriented, multilayer polypopylene film, process

Biaxially orientated polypropylene multilayer film, process for its

The invention relates to a multilayer polypropylene film which comprises a base layer K, an interlayer Z and an outer layer D in the structure KZD. The base layer includes propylene polymer or a propylene polymer mixture and filler. The interlayer includes a propylene polymer or a propylene polymer mixture and pigment. The outer layer is heat-sealable and contains a combination of inorganic and/or organic particles and a tertiary aliphatic amine of the formula I: ##STR1## in which R.sup.1 is essentially an alkyl radical having at least 18 carbon atoms or an essentially fully saturated alkyl radical having 8 to 26 carbon atoms, and

Heat-sealable, opaque, biaxially oriented, multilayer polypropylene

The invention relates to an opaque, matte, multilayer polypropylene film having at least one matte surface which includes at least one base layer and at least one interlayer, and an outer layer applied to this interlayer. The base layer includes polypropylene and fillers. The interlayer includes a mixture or blend of two components I or II. Component I is a propylene homopolymer or a copolymer of .alpha.-olefins having 2 to 10 carbon atoms, or a terpolymer of .alpha.-olefins having 2 to 10 carbon atoms or a mixture or blend of said polymers. Component II is an HDPE or a blend of HDPE and a propylene homopolymer or a copolymer of .alpha.-olefins having 2 to 10 carbon atoms or a terpolymer having 2 to 10 carbon atoms. The outer layer essentially includes a propylene homopolymer or a copolymer of .alpha.-olefins having 2 to 10 carbon atoms or a terpolymer of .alpha.-olefins having 2 to 10 carbon atoms or a mixture or blend of said polymers.

Growing community of inventors

Wiesbaden, Germany

Adolf Wilhelm