Production method of prefoamed synthetic resin particles

Details Production method of prefoamed synthetic resin particles Production method of prefoamed synthetic resin particles

C - Chemistry, Metallurgy

08

J

403/80

C08J 9/22 (2006.01) C08J 9/228 (2006.01)

Patent

CA 2030754

Prefoamed synthetic resin particles are produced by dispersing foamable resin particles in a dispersing medium within a closed vessel, said foamable resin par- ticles containing a water-soluble inorganic substance and a blowing agent therein, and then releasing the foamable resin particles and the medium into an atmo- sphere of a pressure lower than that inside the vessel, whereby the thus-released foamable resin particles are allowed to undergo foaming.

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