Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Patent
1979-12-13
1981-06-30
Lowe, James B
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
To produce composite, plural part or multilayered article
264244, 264254, 264278, 425111, 425112, 425129S, B29D 302, B32B 1508
Patent
active
042762545
ABSTRACT:
The process and mold are specially adapted to produce safety footwear for professional use and in particular for persons working on building sites, these articles being obtained by injection molding. The process comprises previously coating the metal sole with adhesive on both sides and fixing it on the mold slab corresponding to the first injection at a distance from the last so as to form between the mold cavity of the slab and the last a gap corresponding to the thickness of the insole produced by the first injection. Thereafter, the slab is removed and there is brought in front of the visible face of the metal sole the second slab for injecting the outsole which will cover the face of the metal sole.
REFERENCES:
patent: 3009204 (1961-11-01), Bingham, Jr. et al.
patent: 3109701 (1963-11-01), Jacquet
patent: 3305895 (1967-02-01), Ludwig
patent: 3327412 (1967-06-01), Wilmanns et al.
patent: 3446887 (1969-05-01), Ludwig
patent: 3510912 (1970-05-01), Lane
patent: 3577503 (1971-05-01), Innocenti
patent: 3671621 (1972-06-01), Fukuoka
patent: 3682579 (1972-08-01), Hujik
patent: 4120477 (1978-10-01), Justamante
Lowe James B
Petock Michael F.
Plastic Auvergne
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