Printable polypropylene film having anti-fog properties

US7052774B2 · kind B2 · utility

Assignee

• Trespaphan GmbH · DE

Inventors

• Susanne Holzer · Ottweiler, DE
• Gerhard Wieners · Frankfurt am Main, DE

Key dates

• Filing date: Mar 13, 2002
• Grant date: May 30, 2006
• Expiry date: Mar 13, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31938
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The invention relates to a biaxially oriented polypropylene multilayer film, which comprises at least one base layer (B), an intermediate layer (I) and a top layer (I), and which contains anti-fog additives. The anti-fog additive is only added to the intermediate layer (I) in a quantity ranging from 0.5 to 8 wt. % with regard to the weight of the intermediate layer, and the film contains a maximum of 0.5 to <1 wt. % of anti-fog additives with regard to the total weight of the film. The film is suited for packaging moist goods.