Plastic and nonmetallic article shaping or treating: processes – Optical article shaping or treating – Utilizing plasma – electric – electromagnetic – particulate – or...
Patent
1989-09-27
1991-12-10
Lowe, James
Plastic and nonmetallic article shaping or treating: processes
Optical article shaping or treating
Utilizing plasma, electric, electromagnetic, particulate, or...
264 14, 264 17, 264 25, 264 22, 264219, 264220, 264225, B29D 1100, B29C 3338, B29C 3342
Patent
active
050715976
ABSTRACT:
A technique for forming a mold to replicate large numbers of plastic articles, such as by injection or blow molding, wherein the mold contains a hologram or other microstructure for transfer to an outside surface of the molded article. The mold is made by electrodepositing a metal on a model of the article to be molded. Before this deposition, the hologram or other microstructure is formed on a surface area of the model by any one of several techniques. The result is a unitary mold piece in the shape of the article and having the hologram or other microstructure integrally formed on its inside surface.
REFERENCES:
patent: 3565978 (1971-02-01), Folger et al.
patent: 4044939 (1977-08-01), Horst et al.
patent: 4737096 (1988-04-01), Poorten
Legierse et al., "Electroformed Molds for Optical Readout Discs", Plating and Surface Finishing, Dec. 1984, pp. 21-25.
Baeyens, "Electroformed Molds and Dies", Plating, May 1966, pp. 591-597.
D'Amato Salvatore F.
Mallik Donald W.
American Bank Note Holographics, Inc.
Lowe James
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