Heat-laminatable, high-gloss multilayer films

US5126197A · kind A · utility

Assignee

• Wolff Walsrode AG · DE

Inventors

• Ingo Schinkel · Walsrode, DE
• Ulrich Reiners · Neuenkirchen, DE

Key dates

• Filing date: Oct 22, 1990
• Grant date: Jun 30, 1992
• Expiry date: Oct 22, 2010

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/3192
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

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.