Method of molding a cassette half with window insert

Details Method of molding a cassette half with window insert Method of molding a cassette half with window insert

1977-06-08

1978-09-26

Hoag, Willard E.

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

Punching article from sheet material

264157, 264271, 264328, B29C 500, B29D 300, B29F 100

Patent

active

041170695

ABSTRACT:
A half-section of a cassette casing having an embedded transparent wafer serving as a viewing window. The cassette casing section is formed by shearing the wafer from an elongated strip of transparent material, disposing and supporting the wafer within a cavity, and forcing a plasticized material into the cavity where it solidifies. The cavity is defined in an injection mold comprising a pair of relatively movable cavity plate assemblies with which are associated means for shearing and supporting the wafer.

REFERENCES:
patent: 2690021 (1954-09-01), Langan
patent: 3166795 (1965-01-01), Joffe
patent: 3493458 (1970-02-01), Santangelo
patent: 3909088 (1975-09-01), Dennehey et al.
patent: 3934842 (1976-01-01), Posso
patent: 3998324 (1976-12-01), Roccaforte

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