Refrigerant cooled plastic molding

Details Refrigerant cooled plastic molding Refrigerant cooled plastic molding

B - Operations, Transporting

29

C

18/1196

B29C 35/04 (2006.01) B29C 35/00 (2006.01) B29C 35/16 (2006.01)

Patent

CA 1252975

ABSTRACT OF THE DISCLOSURE A method and apparatus are disclosed for cooling a mold of the type having one or more cooling fluid passage- ways formed therein in a plastic molding machine. Liquid phase refrigerant is supplied to a molding machine and feed flows through the cooling passageways. The feed flow is adjusted to obtain a boiling liquid phase and vapor phase refrigerant mixture throughout each of the cooling fluid passageways. The boiling action acts to greatly increase the heat transfer coefficient and substantially reduces the required cooling cycle.

503791

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