Mixing device for mixing together multi-component plastics mater

Details Mixing device for mixing together multi-component plastics mater Mixing device for mixing together multi-component plastics mater

1976-06-30

1977-10-11

Tayman, Jr., James H.

Chemistry: physical processes

Physical processes

Crystallization

251325, 1376254, 239112, 239117, 260 25BC, 366179, 261 82, C08J 930

Patent

active

040532836

ABSTRACT:
A mixing device for mixing together multi-component plastics materials, for example polyurethane, comprises a mixing chamber into which supply ducts for the components lead and in which a piston is reciprocable between a retracted position in which the supply ducts are in communication with the mixing chamber and a forward position in which the supply ducts are shut off from the mixing chamber. The piston is provided with an axial bore through it connected to a supply of air under pressure to enable air to be supplied into the mixing chamber together with the components for producing plastic foam such as foamed polyurethane.

REFERENCES:
patent: 3799199 (1974-03-01), Rumpff
patent: 3870078 (1975-03-01), Art, Jr. et al.
patent: 3960506 (1976-06-01), Schmitzer

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