Apparatus for mixing reactive synthetic-resin components

Details Apparatus for mixing reactive synthetic-resin components Apparatus for mixing reactive synthetic-resin components

1992-06-24

1994-01-11

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

Means feeding fluent stock from plural sources to common...

2643284, 2643286, 26432819, 425544, 425557, 425558, 425561, B29C 4502

Patent

active

052775674

ABSTRACT:
A mixing head for a mold can receive two or more reactive synthetic resin components in a mixing chamber in which a mixing-chamber piston is displaceable to drive the residues into a first calming chamber communicating with the outlet of the mixing chamber. The first calming chamber also has a piston or plunger which can be advanced to drive the residues into a second calming chamber connected to the outlet of the first calming chamber. The second calming chamber has a second piston displacing the mixture into the mold cavity. Because the pistons of the first and second calming chambers can be retracted as the mixture flows through these chambers, a highly effective calming effect can be obtained for the turbulent mixture of the mixing chamber without throttling.

REFERENCES:
patent: 4668460 (1987-05-01), Ongena
patent: 4721391 (1988-01-01), Bauer
patent: 4898714 (1990-02-01), Urban et al.

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