Method of molding a synthetic resin layered lens for a vehicle h

Details Method of molding a synthetic resin layered lens for a vehicle h Method of molding a synthetic resin layered lens for a vehicle h

1995-05-16

1998-05-26

Vargot, Mathieu D.

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Composite or multiple layer

264 21, 264247, 264255, 2642973, 2643288, 362 61, 425808, B29D 1100

Patent

active

057560137

ABSTRACT:
A synthetic resin layered lens for a vehicle lighting device in which an upper lens layer is disposed on a lower lens layer thereby forming a layered lens of integral construction. The lower lens layer is molded in a state that the surface of the lower lens layer where it contacts the upper lens layer, faces the injection gate. The gate scar of the lower layer is thus hidden by the upper layer.

REFERENCES:
patent: 4714535 (1987-12-01), Coombes, Jr. et al.
patent: 4885121 (1989-12-01), Patel
patent: 5275764 (1994-01-01), Hettinga
patent: 5413743 (1995-05-01), Prophet
Zweifarben-Spritzgieben, Facherfahrener Konner erlautert, wie man's macht, Arburg Maschinenfabrik Hehl & Sohne, pp. 1-6.

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