Apparatus for manufacturing plastic articles

Details Apparatus for manufacturing plastic articles Apparatus for manufacturing plastic articles

1995-11-22

1998-10-20

Davis, Robert

Static molds

Including means within surface to confine heat exchange medium

Mold part of particular material

425526, 425548, 425552, B29C 3302, B29C 4573

Patent

active

058242376

ABSTRACT:
A method and apparatus for producing a plastic article. The plastic is introduced into a mold that can be tempered and that has at least one hollow chamber, the contour of which corresponds to the outer contour of the article. During manufacture, the mold is heated up and removal of the article is effected with a cooled mold. To shorten the cycling time, the inner region of the mold that adjoins the hollow chamber is cooled and heated at least partially independently of the outer region that is remote from the hollow chamber, while the outer region is held at a temperature that is higher than the temperature during removal.

REFERENCES:
patent: 4338068 (1982-07-01), Suh et al.
patent: 5041247 (1991-08-01), Kim
patent: 5190715 (1993-03-01), Yamada et al.
patent: 5234637 (1993-08-01), Reymann et al.
patent: 5376317 (1994-12-01), Maus et al.

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