Method for producing foam plastics and device for effecting...

Details Method for producing foam plastics and device for effecting... Method for producing foam plastics and device for effecting...

B - Operations, Transporting

01

J

18/677

B01J 8/00 (2006.01) B01F 5/00 (2006.01) C08J 9/00 (2006.01) B29D 27/00 (1980.01)

Patent

CA 1123564

METHOD FOR PRODUCING FOAM PLASTICS AND DEVICE FOR EFFECTING SAME ABSTRACT OF THE DISCLOSURE The present invention relates to a method for producing foam plastics and a device for effecting same. The method re- sides 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 communicat- ing through two closely adjacent coaxially arranged pipes forming an annulus, the outer pipe being provided with dia- metrically opposite connections for letting into the annulus the catalyst and compressed air. Said method and device pro- vide for continuous mixing of the components and simultaneous introduction of the catalyst and compressed air into the foam, which considerably improves the homogeneity degree of the foam plastic structure.

291383

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