Biodegradable polymer blends suitable for laminate coatings, wraps and other packaging materials manufactured from at least one "hard" biopolymer and at least one "soft" biopolymer. "Hard" biopolymers tend to be more brittle and rigid and typically have a glass transition temperature greater than about...http://www.google.com/patents/US6573340?utm_source=gb-gplus-sharePatent US6573340 - Biodegradable polymer films and sheets suitable for use as laminate coatings as well as wraps and other packaging materials
