Apparatus and method for the manufacture of molded packings

Details Apparatus and method for the manufacture of molded packings Apparatus and method for the manufacture of molded packings

1983-04-01

1985-12-17

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By gas forming or expanding

264 401, 264338, 425 89, 425142, 425150, 425817R, B29D 2704

Patent

active

045591920

ABSTRACT:
Open molds for forming molded packings are moved sequentially to a series of work stations. The work stations include a preparation station for preparing the molds with a separator sheet or other release agent and a clamping station for covering the molds to contain foam material within the molds during cure. The foam material is dispensed into the molds as the molds are moved from the preparation station to the clamping station. The molds may be inverted as they are moved from the clamping station to an ejection station such that removal of the molded packings is facilitated by gravity. The sequence and duration of the various operations are controlled to provide automatic manufacture of the molded packings. A unique system for delivering a thin sheet to a molding machine or to other types of sheet processing machines is also disclosed.

REFERENCES:
patent: 3813463 (1974-05-01), Conger
patent: 4150074 (1979-04-01), Tilgner
patent: 4191722 (1980-03-01), Gould
patent: 4215730 (1980-08-01), Oswald
patent: 4325688 (1982-04-01), Kumasaka et al.
patent: 4352651 (1982-10-01), Kumasaka et al.
Aldfer, Sterling, "One-Shot" Polyurethane Production, in Rubber Age, Apr. 1963, pp. 89-93.

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