Coextruded multilayer sheet and tough sleeve label made...

Details Coextruded multilayer sheet and tough sleeve label made... Coextruded multilayer sheet and tough sleeve label made...

B - Operations, Transporting

32

B

18/647

B32B 5/18 (2006.01) B29C 61/06 (2006.01) B65D 23/08 (2006.01)

Patent

CA 1240816

ABSTRACT A coextruded multilayer heat shrunk plastic sleeve label having a tough skin layer and a brittle polystyrene foam layer, the skin layer being extruded from a blend of low density polyethylene, a block copolymer of butadiene and styrene as a compatibility agent and optionally, small amounts of polystyrene. The amount of the block copolymer used is sufficient to provide limited adhesion between the skin and foam layers to maximize the toughness of the total label structure. The sleeve label can be sealed by ultrasonic, hot air and heat sealing.

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