Minute shape molding method and apparatus thereof

Details Minute shape molding method and apparatus thereof Minute shape molding method and apparatus thereof

2008-11-05

2010-10-26

Del Sole, Joseph S (Department: 1791)

Plastic and nonmetallic article shaping or treating: processes

With step of cleaning, polishing, or preconditioning...

C264S328700, C264S328110, C264S328160, C264SDIG065, C425S547000, C425S548000, C425S574000, C425S575000, C425S576000, C425S590000

Reexamination Certificate

active

07820084

ABSTRACT:
A method of molding a minute shape, in which at least one of a pair of dies is provided with an uneven section of a minute shape on a molding surface thereof, clamping of the pair of dies is stopped immediately before the dies are completely clamped, a resin is injected into a cavity, and thereafter the dies are completely clamped to thereby transcribe the shape of the uneven section onto the resin includes preparing a plurality of transcription dies each provided with the uneven section on a molding surface thereof, heating one of the transcription dies which is not used to mold a product by a heating unit, and exchanging the transcription dies with each other, at a point in time at which molding is completed, to thereby mold the product continuously.

REFERENCES:
patent: 3671621 (1972-06-01), Fukuoka et al.
patent: 3830613 (1974-08-01), Aoki
patent: 3906066 (1975-09-01), Barrie
patent: 5750068 (1998-05-01), Gouda et al.
patent: 5855935 (1999-01-01), Brent et al.
patent: 6495091 (2002-12-01), Manson et al.
patent: 7198480 (2007-04-01), Imai
patent: 2007/0284074 (2007-12-01), Morooka et al.
patent: 05-008267 (1993-01-01), None
patent: 05329901 (1993-12-01), None
English translation of JP 05329901, retrieved from JPO database Jan. 26, 2010.
English language translation of JP-05-008267.

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