Process of products uv-stabilized polyester materials

Details Process of products uv-stabilized polyester materials Process of products uv-stabilized polyester materials

B - Operations, Transporting

29

B

18/1211

B29B 9/16 (2006.01) C08J 3/20 (2006.01) C08K 5/00 (2006.01)

Patent

CA 1212216

ABSTRACT Polyesters are combined with UV-stabilizing substances in order to produce an end product, such as a film, sheet, ribbon or filament, by mixing polyester granules and the UV-stabilizing substance in powdered form at an elevated temperature such that at least the exterior surface of the polyester granules is soft, thereby to cause the powdered UV-stabilizing substance to adhere to the individual polymer granules, the granules with the powder adhering thereto are then dried, and they are then passed through an extrude or otherwise formed into an end product.

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