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
1996-04-29
1998-09-29
Aftergut, Karen
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
264236, 264254, 264255, 264316, 264336, 264337, 264347, 425811, 425DIG124, B29C 3502, B29C 3912, B29C 7102
Patent
active
058142606
ABSTRACT:
A method of casting-masking-molding a thermoplastic resin product, includes the steps of placing a molding sheet 1 on an upper surface of a heated table plate 4, the molding sheet including a molding die 2, and a mask 3 including a plurality of mask constituting pieces 3a, 3b, 3c, ... which are fitted into the molding die and capable of being separated from one another, filling the molding die 2 of the molding sheet 1 in order by pouring a thermoplastic resin liquid 6a of a desired color into a portion of the mask 3 from which one of the mask consisting pieces is taken out, then to solidify the poured thermoplastic resin liquid, and repeating in a required number of times the steps of pouring a thermoplastic resin liquid 6b of the same color as the desired color or another color different therefrom into another portion of the mask from which another of the mask constituting pieces is taken out, then to solidify the poured thermoplastic resin liquid, and further heating the molded resin body 6 placed on the table plate 4, which is separated from the molding sheet 1 and placed on the table plate 4, and gelatinizing the molded resin body, thereafter to cool the molded resin body.
REFERENCES:
patent: 1597373 (1926-08-01), Grimm
patent: 3492391 (1970-01-01), Van Atten
patent: 4882173 (1989-11-01), La Roche et al.
patent: 5368791 (1994-11-01), Uchida et al.
patent: 5376321 (1994-12-01), Uchida et al.
patent: 5445772 (1995-08-01), Uchida et al.
patent: 5576031 (1996-11-01), Uchida et al.
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