Method of heating thermoplastic bottle or preform and method of

Details Method of heating thermoplastic bottle or preform and method of Method of heating thermoplastic bottle or preform and method of

1990-11-02

1993-01-19

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

219 1053, 219 1077, 264 25, H05B 610

Patent

active

051808935

ABSTRACT:
This invention relates to a heating method for forming a thermoplastic bottle in which a heating member is inserted into the interior from a preform made of a thermoplastic material or the bottle and the preform or plastic bottle is heated by the heating member and a heating device located externally so as to thereby heat the same simultaneously internally and externally thereof, the temperature of the respective heating member being controlled respectively. Radiant heat energy distribution is variable along the longitudinal direction of the heating member so as to carry out the heating process in conformity with the bottle to be formed so as to manufacture the plastic bottle with high quality. A metal to be melted within a predetermined temperature range is enclosed in the heating member and the predetermined temperature of the heating member is maintained for a long period of time by the utilization of the latent heat of the metal so as to manufacture the plastic bottle with high quality under precise temperature setting conditions. The heating means is also utilized for the heating of a mouth portion of the plastic bottle so as to obtain a suitable crystallization of the mouth portion.

REFERENCES:
patent: 3539693 (1970-11-01), Elischer
patent: 4315725 (1982-02-01), Yoshino
patent: 4377347 (1983-03-01), Hanmyo et al.
patent: 4407651 (1983-10-01), Beck et al.
patent: 4481639 (1984-11-01), Archenholtz et al.
patent: 4579080 (1986-04-01), Martin et al.
patent: 4857687 (1989-08-01), Andersson et al.
patent: 5032700 (1991-07-01), Sugiyama et al.

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