Injection molding method for making a switch

Details Injection molding method for making a switch Injection molding method for making a switch

1983-12-12

1985-02-19

Hoag, Willard E.

Metal working

Method of mechanical manufacture

Electrical device making

29458, 29522, 264135, 264320, 264334, B29C 1700, H01H 1100, B29F 110

Patent

active

044996624

ABSTRACT:
For providing a molded body in the form of a predetermined pattern projecting from a surface of a substrate, such as, a flexible metal sheet, the substrate surface is first coated with a thermoplastic film and then applied against a mold plate which has a cavity in the form of the predetermined pattern opening toward the thermoplastic film, whereupon, a resin, such as, polyethylene, is injected into the cavity to form on the substrate an injection molded body having the predetermined pattern and which is bonded to the substrate through the thermoplastic film in consequence of the heat and pressure incidental to the injection molding process.

REFERENCES:
patent: 3176057 (1965-03-01), Peters et al.
patent: 3246066 (1966-04-01), Gits
patent: 3839129 (1974-10-01), Neumann
patent: 3969175 (1976-07-01), Posner
patent: 4016235 (1977-04-01), Ferro
patent: 4073854 (1978-02-01), Burry
patent: 4110393 (1978-08-01), Trame
patent: 4205036 (1980-05-01), Trame
patent: 4368168 (1983-01-01), Slepcevic
patent: 4395817 (1983-08-01), Asada et al.

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