Device for producing foam plastics

Details Device for producing foam plastics Device for producing foam plastics

1977-12-12

1980-04-22

Scovronek, Joseph

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Organic polymerization

366165, 366178, 366182, 422134, 422135, 521188, 521917, B01J 800, B01F 500, B29D 2700, C08J 900

Patent

active

041995473

ABSTRACT:
The present invention relates to a method for producing foam plastics and a device for effecting same. The method resides in foaming with continuous and proportioned injection of all components successively in two stages, mixing water, resin and a foaming agent under pressure with compressed air to obtain homogenized foam with a foam coefficient of 15 to 20, with subsequent injection thereinto of a curing catalyst together with compressed air. The device for carrying out the proposed method comprises proportioners the inlets whereof are connected to tanks each being intended for a respective component, as well as curing and foaming chambers communicating through two closely adjacent coaxially arranged pipes forming an annulus, the outer pipe being provided with diametrically oposite connections for letting into the annulus the catalyst and compressed air. Said method and device provide for continuous mixing of the components and simultaneous introduction of the catalyst and compressed air into the foam, which considerably improves the degree of homogeneity of foam plastic structure.

REFERENCES:
patent: 2761882 (1956-09-01), Hulse et al.
patent: 2764565 (1956-09-01), Hoppe et al.
patent: 3043670 (1962-07-01), Vieli
patent: 3072462 (1963-01-01), Anderson
patent: 3238021 (1966-03-01), Webber et al.
patent: 3256067 (1966-06-01), Shriver et al.
patent: 3424439 (1969-01-01), Baker
patent: 3486862 (1969-12-01), Unterstenhoefer
patent: 3856269 (1974-12-01), Fothergill et al.

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