Method and apparatus for producing a foam from a molten...

Details Method and apparatus for producing a foam from a molten... Method and apparatus for producing a foam from a molten...

B - Operations, Transporting

29

C

18/677

B29C 67/20 (2006.01) B29B 7/74 (2006.01)

Patent

CA 1262022

Abstract of the Disclosure A method and apparatus for creating molten thermoplastic material foam by separately pressurizing the molten thermoplastic material and a gas and by delivering that material and gas sequentially to a premixing chamber, through a sintered metal insert and a post mixing chamber, to a discharge orifice of a spray nozzle. The apparatus for practicing this method comprises a nozzle assembly, including a nozzle adaptor and a nozzle, the adaptor of which has flow passages for delivering the pressurized gas and molten material to a premixing cavity and subsequently to and through a sintered metal insert contained within the nozzle.

520095

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