Transparent antiblocking film

US5972519A · kind A · utility

Assignee

• BASF SE

Inventors

• Norbert Niessner · Friedelsheim, DE
• Konrad Knoll · Mannheim, DE

Key dates

• Filing date: Jan 13, 1998
• Grant date: Oct 26, 1999
• Expiry date: Jan 13, 2018

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31917
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A film in roll form, in particular for food packaging as substitute for a film made from polyvinyl chloride, comprises from 15 to 99.6% by weight of an elastomeric styrene-butadiene block copolymer, from 15 to 99.6% of a thermoplastic polymer, from 0.1 to 10% of an antifogging agent, from 0.1 to 5% of a primary antioxidant, from 0.1 to 5% of a secondary antioxidant and from 0.1 to 50% of other auxiliaries, and shrinks perpendicularly to the direction of take-off by not more than 3% during a storage period of three months.