Device and process for the production of a reaction mixture from

Details Device and process for the production of a reaction mixture from Device and process for the production of a reaction mixture from

1993-10-27

1994-09-13

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Organic polymerization

422105, 422112, 422110, 137 1, 13762565, 366159, C08F 200, G05B 100, G05D 1600, F17D 100

Patent

active

053466730

ABSTRACT:
In the production of a reaction mixture which forms plastic material, in particular foamed plastic material, from at least two flowable reaction components, the inlet members or other switch-over members which must be switched over in a precise fashion, and controlled by a sliding valve comprising a slide which is assigned a restoring spring which operates in opposition to a moving electromagnet, and a holding electromagnet. First, the holding electromagnet is fully activated whereupon the moving electromagnet is activated. Following the build-up of force of the moving electromagnet, the holding electromagnet is switched off so that the inlet member or other switch-over member opens abruptly.

REFERENCES:
patent: 3778337 (1974-01-01), Breer
patent: 4396037 (1983-08-01), Wilcox
patent: 4422475 (1983-12-01), Aspinwall
patent: 4836248 (1989-06-01), Steigmaier
patent: 4889153 (1989-12-01), Zepernick et al.
patent: 4904451 (1990-02-01), Proska et al.

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