Polystyrene beads

Details Polystyrene beads Polystyrene beads

B - Operations, Transporting

29

B

B29B 9/12 (2006.01) B29C 44/34 (2006.01) C04B 16/08 (2006.01) C08J 3/12 (2006.01)

Patent

CA 2254417

Substantially cylindrical unexpanded polystyrene beads with a diameter on the order of 1 mm and a length on the order of 3 mm are expanded into substantially cylindrical expanded polystyrene beads with a diameter between about 2 and 5 mm, and a length between about 4 and 10 mm. These expanded beads are well suited for use as a substitute for concrete aggregate to make lightweight concrete and concrete construction boards.

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