Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Organic polymerization
Patent
1976-11-18
1978-09-19
Tayman, Jr., James H.
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Organic polymerization
239586, 366 76, B01F 1502, B01F 510
Patent
active
041150660
ABSTRACT:
A high pressure mixing head is disclosed for combining a plurality of reactive fluid polymeric components to form a mixture thereof for molding purposes. The mixing head incorporates an expulsion plunger operating in a mixing chamber into which the several components are admitted through individual inlet openings which are covered and uncovered by reciprocation of the plunger. The mixing head further incorporates inlet valves and valve chambers located respectively upstream of the several inlet openings and so arranged that the inlet valves prevent admission of the individual components into the mixing chamber, irrespective of the plunger position, unless a predetermined pressure of the respective components is attained. Each valve chamber is connected to component feed and return lines forming part of the respective component circulating systems so that component flow at relatively low pressure takes place at all times between mixing/molding periods of operation. The component circulating systems each incorporate bypass and return line shut-off means so that, on closing the shut-off means and thus preventing return flow of the respective components, their pressures at the mixing head are increased to the predetermined level operation of the aforesaid inlet valves.
REFERENCES:
patent: 2885268 (1959-05-01), Breer et al.
patent: 3788337 (1974-01-01), Breer
patent: 3960506 (1976-06-01), Schmitzer
patent: 3964731 (1976-06-01), Ernst
Tayman, Jr. James H.
The Upjohn Company
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