Slip-cased core-forming mandrel

Details Slip-cased core-forming mandrel Slip-cased core-forming mandrel

1978-01-30

1980-01-01

McQude, John

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

With mold element formation or removal

425 64, 425 89, 425107, 425364R, 425460, B28B 2106

Patent

active

041816960

ABSTRACT:
In forming settable mix into hollow-cored articles, cantilevered hollow core-forming mandrels are disposed in a mold station, each mandrel being wrapped in a flexible, non-porous casing formed as an endless loop slip-case which encloses the exterior and interior mandrel walls. Movement of the mix moves the casing along the longitudinal mandrel axis rotating it around the exterior and interior mandrel walls, thereby preventing the accretions of settable material on the mandrel.

REFERENCES:
patent: 231537 (1880-08-01), Codding
patent: 857586 (1907-06-01), Boyle
patent: 2209726 (1940-07-01), Fleming
patent: 2618832 (1952-11-01), Zschokke

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