Agricultural biodegradable polyester cover film

This film contains not less than 20 parts of aromatic-fatty copolyester and 10-50 parts of inorganic filler, and has a blow molding ratio of not less than 2.0 with injection molding. For example, blow molding of polybutylene adipate-butylene terephthalate containing 10% by mass of calcium carbonate at a blowing ratio of 2.0 can produce a film having good moldability and water repellency.

Source: Polyester Industry