Jig for orientation-blow molding piece

Details Jig for orientation-blow molding piece Jig for orientation-blow molding piece

1980-06-17

1982-02-16

Silbaugh, Jan H.

Plastic article or earthenware shaping or treating: apparatus

Means applying electrical or wave energy directly to work

Radiated energy

219354, 219388, 264 25, 264 26, 264532, 264535, 4251748R, 425526, B29C 1707, F29B 906

Patent

active

043157254

ABSTRACT:
A jig used for a blow-molding machine for fabricating a bottle-shaped container of biaxially oriented plastic, which comprises advantageously a core shaft elevationally movably inserted in a mandrel and having a blow-molding air passage for longitudinally orienting the piece, and a heat insulating layer provided on the outer periphery of the core shaft for heating the piece upon irradiation of heat rays such as far infrared rays to thereby externally heat the piece and also internally heat the piece. Thus, the piece is uniformly heated in or immediately before the blow-molding of the piece so as to improve the molding accuracy of the piece into a bottle-shaped container in the blow molding mold.

REFERENCES:
patent: 4233010 (1980-11-01), Sadaosuzuki

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