Plastic and nonmetallic article shaping or treating: processes – Carbonizing to form article – Agglomeration or accretion
Patent
1986-01-06
1988-03-15
Nozick, Bernard
Plastic and nonmetallic article shaping or treating: processes
Carbonizing to form article
Agglomeration or accretion
4251748R, 249 78, H05B 100
Patent
active
047312068
ABSTRACT:
The invention relates to a process and a device for the production of shaped bodies of plastic material, in particular polyurethane foam, in molds introduced into an inductor.
A process of this type comprises the improvement that for the production of shaped bodies of plastic material, in particular of polyurethane foam or of fibers, non-woven fabrics or the like impregnated or wetted with synthetic resins, latex or the like, of the reactive starting materials introduced into the molds, a frequency of 1 to 30 kHz preferably 5 to 12 kHz, is adjusted and that molds are used in which the individual mold parts are mutually electrically insulated in order to prevent a current flow in the mold around the shaped body and that optionally reinforcements or coating pieces of a material optionally identical to the material of the mold are formed on or applied to the outsides of metallic mold walls for the distribution of the current flow.
REFERENCES:
patent: 2560783 (1951-07-01), Scott
patent: 4555373 (1985-11-01), Bloemkolk
Naue & Naue Gesellschaft m.b.H. & Co.
Nozick Bernard
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