Polystyrene bead expansion process

Details Polystyrene bead expansion process Polystyrene bead expansion process

B - Operations, Transporting

29

C

18/655

B29C 71/04 (2006.01) C08J 9/24 (2006.01)

Patent

CA 1281868

ABSTRACT OF THE DISCLOSURE Polystyrene beads or beads of other thermoplastic material are expanded to a consolidated foam structure in a hollow cavity of a marine float or other structure by providing the beads with a uniform coating of a saturated brine solution or other aqueous solution of water-soluble salt and exposing the solution to microwave energy to boil the solution and thereby heat the beads to cause expansion and fusion to a foam structure.

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