Multi-layer particles for rotational molding

Details Multi-layer particles for rotational molding Multi-layer particles for rotational molding

C - Chemistry, Metallurgy

08

J

C08J 3/12 (2006.01) B29B 9/12 (2006.01) B29C 41/04 (2006.01) B29C 44/02 (2006.01) C08J 9/228 (2006.01)

Patent

CA 2181388

Multi-layered, core and shell particles are used to rotationally mold articles. The core and shell materials may be thermoplastic polymers, the difference between the core and the shell will be at leat 0.5 melt index units, optionally, the core and shell may also differ by at least about 1 ~CTm. The core and shell particles produce a rotationally molded article with generally an outer layer (of the molded article) that fuses more easily, and an inner layer that may provide superior toughness.

Particules multicouches comportant un noyau et une enveloppe, utilisées pour fabriquer des articles par rotomoulage. Le noyau et l'enveloppe peuvent être constitués de polymères thermoplastiques. La différence d'indice de fusion entre le noyau et l'enveloppe est d'au moins 0,5 unités d'indice de fusion, la différence de T¿f? entre le noyau et l'enveloppe étant éventuellement d'au moins 1 ~C. Les particules dont se composent le noyau et l'enveloppe servent à fabriquer par rotomoulage un article comportant généralement une couche extérieure qui fond plus facilement et une couche intérieure, plus dure.

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