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
1977-07-06
1978-10-31
Hoag, W.E.
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
264267, 264313, 264318, 264328, 264334, B29D 900, B29F 100
Patent
active
041234944
ABSTRACT:
The present invention relates to a method and apparatus for reinforcing an object or article essentially comprising a hot-shaped shell, and more particularly to reinforcing a hot-shaped thermoplastic resin sheet with a resin/glass fibre laminate.
According to the invention there is provided a method for reinforcing an article or object which essentially comprises a hot-shaped shell, comprising supporting a surface of the shell on an elastically deformable pad intimately matable therewith, placing a mould part having a working surface of shape complementary to the other surface of the shell so that a free space is formed between the mould part and the shell, injecting a reinforcing resin into the free space and then demoulding the thus-reinforced shell.
According to the invention there is also provided an apparatus for carrying out the method, comprising an elastically deformable pad adapted to support (and intimately matable with) a surface of a hot-shaped shell, a mould part complementary to the shape of the other surface of the shell, and means for injecting resin under pressure into the free space formed between the mould part and the shell when in assembled position.
REFERENCES:
patent: 2714226 (1955-08-01), Axelrad
patent: 3158906 (1964-12-01), Boyer
patent: 3218377 (1965-11-01), Gremigni
patent: 3294887 (1966-12-01), Altermatt
patent: 3309450 (1967-03-01), Rodgers
patent: 3520961 (1970-07-01), Suda et al.
patent: 3618179 (1971-11-01), Anderson et al.
patent: 3654062 (1972-04-01), Loew
Morton, Rubber Technology, Van Nostrand, N.Y. (1974), pp. 225 & 226.
Evrard Paul
Terroy Michel-Claude
Altulor
Hoag W.E.
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