Method of rotational molding a thermosetting article with a ther

Details Method of rotational molding a thermosetting article with a ther Method of rotational molding a thermosetting article with a ther

1975-07-28

1976-11-02

Hoag, Willard E.

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

Utilizing centrifugal force

264126, 264259, 264261, 264262, 264271, 264310, B29C 508, B29D 300, B29D 2308

Patent

active

039897877

ABSTRACT:
Method of making a molded article comprising a hollow body of a crosslinked polymer rotationally molded around a section of at least one piece of non-crosslinked conduit, which conduits protrude from said hollow body, made by attaching said conduits of non-crosslinked material at the desired location to the mold with said section being located inside a heated section of the mold so that the crosslinkable polymer during a rotational molding process is fused and crosslinked inside of the mold and around and in tight welding-type connection with said section, whereas the remainder of the piece or pieces of uncrosslinked polymer are heat-insulated, thus avoiding deformation or collapsing of these pieces.

REFERENCES:
patent: 3081493 (1963-03-01), Beyer-Olsen et al.
patent: 3312765 (1967-04-01), Scott
patent: 3542912 (1970-11-01), Rielly
patent: 3660552 (1972-05-01), Hinz et al.

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