Starch filled coextruded degradable polyethylene film

Details Starch filled coextruded degradable polyethylene film Starch filled coextruded degradable polyethylene film

B - Operations, Transporting

32

B

B32B 27/18 (2006.01) B29C 47/06 (2006.01) B32B 9/02 (2006.01) B32B 33/00 (2006.01) B32B 31/30 (1990.01)

Patent

CA 2049190

ABSTRACT A starch filled, coextruded degradable polyethylene film includes a starch filled inner layer positioned between two outer layers that contain a prodegradant. The outer layers of the film, which contain no starch, enable the film to retain desirable physical properties similar to conventional polyethylene film. The prodegradant causes the outer layers of the film to degrade under appropriate conditions exposing the starch filled inner layer. The starch in the inner layer then serves as a source of nutrients for microorganisms which consume starch, leaving a porous structure that is vulnerable to oxidation, hydrolysis, direct enzyme action or combinations of these processes. GW04: JORED\33864

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