Pre-expanded plastic beads for controlling thermal shrinkage...

Details Pre-expanded plastic beads for controlling thermal shrinkage... Pre-expanded plastic beads for controlling thermal shrinkage...

B - Operations, Transporting

22

D

22/162, 117/46.2

B22D 7/02 (2006.01) B22C 7/02 (2006.01) C08J 9/224 (2006.01)

Patent

CA 1309902

ABSTRACT OF THE DISCLOSURE Thermal shrinkage and decomposition rate of molded expandable resins of appropriate density are successfully controlled by adding proper amount of water-soluble silicate and or polysilicate during pre-expansion operation of the expandable resins.

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