Method and apparatus for calibrating a reaction injection moldin

Details Method and apparatus for calibrating a reaction injection moldin Method and apparatus for calibrating a reaction injection moldin

1976-02-09

1978-01-24

Tollberg, Stanley H.

Dispensing

Plural sources, compartment, containers and/or spaced jacket

Interconnected discharge volume varying means

73 3, B67D 560, G01F 2500

Patent

active

040699480

ABSTRACT:
A method and apparatus are disclosed for calibrating the individual amounts of each of several different reactive components separately recirculated in a closed loop system wherein separate portions of such components are periodically withdrawn from the system and intermixed in a mixing head of a reaction injection molding machine for delivery in homogeneously mixed condition to a closed mold under pressure. Calibrating means is provided to enable accurate monitoring and correction of the relative proportions of the reactive components delivered to the chamber of the mixing head, under actual operating pressure conditions prevailing during an actual injection molding operation, without substantially interrupting the molding process or requiring any dismantling of the apparatus to gain access to the individual component streams.

REFERENCES:
patent: 3216622 (1965-11-01), Drostholm
patent: 3306495 (1967-02-01), Wabers

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