Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface
Patent
1992-10-16
1995-01-03
Vargot, Mathieu D.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Shaping against forming surface
264326, 425 35, 425 44, B29C 3504
Patent
active
053784251
ABSTRACT:
A method for vulcanizing a tire wherein firstly heating medium is blown toward a tire internal surface from a supply opening arranged at a position above an equator of the tire in a mold and secondary pressurizing medium is blown toward the tire internal surface from the supply opening, and an apparatus used therefor. By virtue of the method and the apparatus, in vulcanization, abnormal cooling at a lower bead of a tire is prevented and consequently a large temperature difference inside the tire is prevented, so that uniform vulcanization can be carried out to provide products having high quality. Further, prevention of the temperature difference makes it possible to shorten a time period required for vulcanization, to improve productivity, and to reduce energy loss.
REFERENCES:
patent: 3329748 (1967-07-01), Hugger
patent: 4222721 (1980-09-01), Gado
Ijiri Masaaki
Kubota Akinori
Kubota Yoshiya
Okatmoto Shoji
Soeda Koji
Sumitomo Rubber Industries Ltd.
Vargot Mathieu D.
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