Process for making objects from mineral fillers bonded with a th

Details Process for making objects from mineral fillers bonded with a th Process for making objects from mineral fillers bonded with a th

1978-10-31

1980-10-14

Smith, Edward J.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

264250, 264255, 264257, B29D 302, B29D 900

Patent

active

042281130

ABSTRACT:
Three-dimensional shaped objects are made by moulding a material, a moulding material consisting of mineral fillers and a thermosetting resin with a hardener being first evenly distributed outside the mould, the assembly (sheet) that has been prepared in this way and is still pliable being transferred to the mould and subsequently subjected to pressure at an elevated temperature, with the wall of the mould being provided, at the elevated temperature, with a layer of powdery, thermosetting resin with catalyst, which resin is made to melt and polymerize, after which the pretreated moulding material is installed in the mould and subjected to pressure. While the resin is melting, a fiber layer can be applied to it.

REFERENCES:
patent: Re28068 (1974-07-01), Lemelson
patent: 3784664 (1974-01-01), Nicklin
patent: 4123488 (1978-10-01), Lawson

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