Infiana Germany Gmbh & Co. Kg

Loparex Germany Gmbh & Co. Kg

Huhtamaki Flexible Packaging Germany Gmbh & Co. Kg

Christian Hermann

Michael Schuhmann

Roland Kelm

Sven Bernhard

Matthias Mauser

Ingrid Sebald

Soheila Salehi-Schneider

Peter Wieland

Matthias SCHRÄGLE

Eddy Daelmans

The present invention relates to a multilayer film comprising a layer (a) and a layer (c), in each case based on at least one propylene copolymer in an amount of at least 15% by weight, at least one propylene polymer in an amount of at least 40% by weight, in each case based on the total weight of the layer (a)/(c), at least one multi-ply inner layer (b) based on at least one homo- and/or copolyamide comprising isophoronediamine units as a polyamide component, adhesion promoter layers (d) and (e), wherein the thickness of the multi-ply layer (b) is at least 40% of the total thickness of the multilayer film, preferably at least 45% or at least 50%.

Multilayer film having high tear strength

A precursor composite material () is provided, having a layer sequence () comprising an adhesive layer (), a carrier layer () on the adhesive layer (), a release layer () on the carrier layer () and a parting layer () on the release layer (), wherein the layer sequence () is arranged in such a way that the side of the adhesive layer () facing away from the layer sequence () is arranged at least in sub-regions on the side of the parting layer () facing away from the layer sequence (). Further provided are a composite material, a method for producing the precursor composite material, a method for producing the composite material and a use of the precursor composite material and of the composite material.

Precursor composite material, method for producing a precursor composite material, method for producing a composite material and use of a precursor composite material and of a composite material

A composite of I a prepreg made of a solid mixture of a reactive plastic resin and a reinforcing means in the form of a tissue or a fiber and II a removable release film comprising a multilayer structure of a) a release layer of at least one thermoplastic homo- or copolymer of &#x3b1;,&#x3b2; unsaturated olefins and at least one wax-like compound as a release additive, b) optionally an adhesion promoting layer, c) a layer of at least one thermoplastic polyamide homo- or copolymer, d) optionally an adhesion promoting layer, e) a release layer of at least one thermoplastic homo- or copolymer of &#x3b1;,&#x3b2; unsaturated olefins having a release coating based on a cured polysiloxane, f) a laminate adhesive layer, and g) a release layer of at least one thermoplastic polyester and a wax-like compound as a release additive.

Prepregs

Growing community of inventors

Eggolsheim, Germany

Christian Hermann