Multi-layer carrier film composed of plastic

US10800945B2 · kind B2 · utility

Assignee

• LOPAREX GERMANY GMBH & CO. KG · DE

Inventors

• Felix Grimm · Königsee, DE
• Jürgen Panhans · Erlangen, DE

Key dates

• Filing date: Feb 28, 2018
• Grant date: Oct 13, 2020
• Expiry date: Nov 12, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09J2453/006
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A multi-layer plastic film as a carrier film for a glue layer, comprising a layer sequence of (a) an outer layer (a) based on a mixture of α) 3-15 wt % of an extrudable glue and β) 85-97 wt % of at least one C2-C8 olefin-alkyl acrylate copolymer, C2-C8 olefin-methacrylic acid copolymer and/or C2-C8 alkyl methacrylate copolymer, wherein the mixture of α) and β) must be compatible with each other, (b) a layer (b) of at least one polyolefin or one olefin copolymer, (c) a layer (c) of at least one polyolefin or one olefin copolymer, and optionally typical auxiliary substances, as a second outer layer, and composites of said carrier film and an adhesive layer.