Insert on extended deck and process of molding

Details Insert on extended deck and process of molding Insert on extended deck and process of molding

1992-02-26

1994-08-16

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

With step of making mold or mold shaping, per se

264275, 4251291, B29C 4514, B29C 4533

Patent

active

053385012

ABSTRACT:
A method of molding and a mold for making bathtubs are disclosed. The mold includes a mold receptor and a deck insert attached to the mold receptor face. The preferred deck insert has at least one projection designed to reduce the cross-sectional area of a portion of a void between the shell's deck and the deck forming face of the insert. Preferably, the distance from the outer edge of the shell's deck to the outer edge of the projection is about 16% of the length of the deck of the sanitary fixture. The mold receptor receives a shell which has a finish side and a non-finish side. The shell is placed in the mold receptor leaving a void between the non-finish side of the shell and the deck insert of the receptor. The insert is attached to the mold receptor to reduce the cross-sectional area of a portion of the space between the shell deck and mold receptor. A male mold engages the finish side of uhe shell, sealably retaining the shell to the mold receptor. A polymeric material is introduced into the void between the receptor and the shell. The polymeric material fills the void and coats the shell. The molded bathtub is then removed from the mold receptor after the male mold has been removed. The non-finish side is coated with a polymeric material and has an area of reduced thickness in the polymeric material coating the deck.

REFERENCES:
patent: 3419457 (1968-12-01), Bleasdale
patent: 4664982 (1987-05-01), Genovese et al.
patent: 5049443 (1991-09-01), Kuszaj et al.
patent: 5129804 (1992-07-01), Perantoni et al.

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