Articles that include a polymer foam and method for...

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C - Chemistry, Metallurgy

08

J

C08J 9/32 (2006.01) B29C 44/18 (2006.01) B29C 44/50 (2006.01) B29C 47/50 (2006.01) B29C 70/66 (2006.01) C09J 5/08 (2006.01) B29C 47/00 (2006.01) C08L 33/00 (2006.01)

Patent

CA 2339005

Polymer foam articles having a substantially smooth surface prepared by melt- mixing a polymer composition and a plurality of microspheres, at least one of which is an expandable polymeric microsphere, under process conditions, including temperature and shear rate, selected to form an expandable extrudable composition; and extruding the composition through a die.

Articles en mousse polymère comportant une surface relativement lisse. Pour préparer ces articles, on mélange à l'état fondu une composition polymère et une pluralité de microsphères dont une au moins est une microsphère polymère expansible, dans des conditions opératoires, comprenant la température et la vitesse de cisaillement, sélectionnées pour former une composition extrudable expansible ; puis on extrude la composition dans une filière.

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