Biodegradable polymer films and sheets

A biodegradable polymer blend comprising: at least one rigid biodegradable synthetic polymer having a glass transition temperature above about 10°C; and at least one glass having a temperature below about 0°C The transition temperature soft biodegradable polymer, wherein the polymer blend is suitable for molding into at least one of an extruded sheet and a blown film.

The present invention discloses a biodegradable polymer blend made from at least one "hard" biopolymer and at least one "soft" polymer suitable for use as a laminate overlay or wrap. And other packaging materials. "Hard" biopolymers tend to be more brittle and more rigid, and typically have a glass transition temperature above about 10°C. "Soft" biopolymers tend to be softer and more flexible, and typically have a glass transition temperature below about 0°C. Although hard and soft polymers each have specific intrinsic advantages, it has been found that specific blends of hard and soft polymers have superior synergistic properties than hard or soft polymers per se. Biodegradable polymers include polyesters, polyesteramides, and thermoplastically processable starches. The polymer blend may optionally contain inorganic fillers. Films and sheets made from this polymer blend can be textured to enhance their rich feel. Wraps are usually manufactured to have good "deadfold" properties, so as to maintain the package site and do not bounce back to the "unwrapped" and planar form. When laminated films are evaluated in terms of water vapor permeability coefficient (WVPC), they generally have good water vapor barrier properties.

Stretch Wrapping Machine is mainly designed for the latter-stage packaing solution for industries like: food & beverage, logistics, paper, building material, chemical, and logistic, etc. Divided by the structure and function, the machines can be designed into: Turntable stretch wrapper, rotary arm stretch wrapper, horizontal stretch wrapper, ring stretch wrapper, reel wrapper, as well as non-turntable wrapper, baggage wrapper, etc.)

Wrapping Machine

Film Wrapping Machine,Stretch Wrapping Machine,Wrapping Machine,Automatic Wrapping Machine

Shandong Sinolion Machinery Corp. Ltd , http://www.sinolion.cc