Fluid handling – Systems – Closed circulating system
Patent
1976-02-09
1977-11-01
Cline, William R.
Fluid handling
Systems
Closed circulating system
137116, B29B 504
Patent
active
040561224
ABSTRACT:
A system is disclosed for a plural component plastics reaction injection molding machine which provides continuous supply and recycling of each of a plurality of liquid components between a mixing head and separate supply tanks for the respective liquid components. The system is designed to use a portion of the respective recycle conduits of the several components as supply conduits to the head, in parallel with the normal supply conduit to the head, during periods of reaction injection taking place in the mixing head, whereby to permit the employment of smaller diameter conduits in the aforesaid portions of the system without reducing the capacity of the molding system. Further economy is achieved by design of the aforesaid portions of the conduit systems to dispose either the supply or recycle conduit concentrically within the other.
REFERENCES:
patent: 2679207 (1954-05-01), Mategorin
patent: 3784169 (1974-01-01), Bockmann et al.
patent: 3788337 (1974-01-01), Breer
patent: 3924651 (1975-12-01), Hippel et al.
Moser Kurt
Schlieckmann Alfred
Cline William R.
The Upjohn Company
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