Inside out molding of high aspect ratio containers

Details Inside out molding of high aspect ratio containers Inside out molding of high aspect ratio containers

1991-08-23

1992-06-30

Simmons, David A.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Plural sequential shaping or molding steps on same workpiece

220 6, 220339, 249 52, 2643281, 264339, B29C 4500

Patent

active

051260930

ABSTRACT:
High aspect ratio boxes and sleeves are molded inside out by molding the outer surfaces of box covers and bottoms and sleeve sides in closely spaced parallel relationship, with side walls extending outward. Backs are joined to the covers and the bottoms by living hinges. The inside out molding process and apparatus reduce effective mold areas and mold forces, providing capacities to mold more boxes at a time in existing press facilities.

REFERENCES:
patent: 3688384 (1972-09-01), Mizushima et al.
patent: 3907193 (1975-09-01), Heller
patent: 4428481 (1984-01-01), Basili

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