Method of making a vehicle window

Details Method of making a vehicle window Method of making a vehicle window

1997-04-29

1998-11-03

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

With printing or coating of workpiece

Applying indicia or design

264265, 264267, B29C 4514, B29C 4516

Patent

active

058303979

ABSTRACT:
A vehicle window including a relatively thin sheet of clear plastic material having opposed surfaces, an electrically operable defrosting grid adhered to one surface of the relatively thin sheet, and a relatively thick substrate layer of clear plastic material having opposed surfaces curved into a vehicle window configuration. The relatively thick substrate layer is adhered to the one surface of the relatively thin sheet and the electrically operable defrosting grid adhered thereto while in contact therewith in a molten state under heat and pressure within a cavity defined by two generally parallel curved die surfaces of cooperating injection molding dies so that upon solidification the surfaces of the relatively thin sheet are retained in a curved configuration in generally parallel coextensive relation to corresponding curved surfaces of the relatively thick substrate layer and a method of making the window wherein the electrically operable defrosting grid is formed by silk screening onto one surface of the relatively thin sheet while in a substantially planar condition a curable electrically conductive ink in the form of a defrosting grid and then curing the curable electrically conductive ink on the one surface of said relatively thin sheet so that the defrosting grid is stably adhered thereto.

REFERENCES:
patent: 3414417 (1968-12-01), Miller et al.
patent: 3898427 (1975-08-01), Levin et al.
patent: 4128448 (1978-12-01), Bitterice et al.
patent: 4361751 (1982-11-01), Criss et al.
patent: 4732725 (1988-03-01), Moncheaux et al.
patent: 4917927 (1990-04-01), Sakaitani et al.
patent: 5419088 (1995-05-01), Raymond et al.

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