Recovery of polyester from scrap by high shear conditions

Details Recovery of polyester from scrap by high shear conditions Recovery of polyester from scrap by high shear conditions

B - Operations, Transporting

29

B

18/1211, 18/764

B29B 17/00 (2006.01) C08J 11/04 (2006.01) C08J 11/06 (2006.01)

Patent

CA 1278668

TITLE Recovery of Polyester From Scrap By High Shear Conditions Abstract of the Disclosure A method for the recovery of plasitic material such as polyester from scrap material such as photographic film having a polyester base and at least one layer of a macromolecular organic polymer. The process includes mixing small pieces of the scrap material in a solution having a scrap solids concentration level of at least 25 percent by volume. The mixture is subjected to conditions of high shear to remove and comminute the polymer layer to particles of a maximum size particle dimension substantially smaller than the minimum size in the longest dimension of the scrap pieces. The polymer particles are then separated from the remaining pure polyester.

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