Apparatus for molding hollow objects of thermoplastic resins

Details Apparatus for molding hollow objects of thermoplastic resins Apparatus for molding hollow objects of thermoplastic resins

1978-08-03

1980-06-10

Camby, John J.

Heating

Work chamber having heating means

Having means by which work is progressed or moved mechanically

219388, 219411, 432 11, F27D 300, F27B 914

Patent

active

042070635

ABSTRACT:
A method for making plastic containers comprises the steps of heating an axially subdivided area of a tubular parison to a temperature higher than that of the remaining axially subdivided portion prior to forming the container in a mold. Apparatus for accomplishing such heating includes a furnace provided with an endless conveyor and an auxiliary heater along a certain portion of the path of the conveyor.

REFERENCES:
patent: 2539135 (1951-01-01), Hess
patent: 3249741 (1966-05-01), Mills
patent: 3715109 (1973-02-01), Gilbert

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