Plastic article or earthenware shaping or treating: apparatus – Preform reshaping or resizing means: or vulcanizing means... – Including both heating and cooling means
Patent
1989-04-20
1991-03-05
Hoag, Willard E.
Plastic article or earthenware shaping or treating: apparatus
Preform reshaping or resizing means: or vulcanizing means...
Including both heating and cooling means
425388, B29C 4916, B29C 4928, B29C 4964
Patent
active
049973606
ABSTRACT:
An apparatus for manufacturing a heat-shrinkable tube has a die formed with a center bore through which a resin tube passes and a plurality of radial holes extending from the bore to the outer periphery of the die. The die is contained in a tank filled with a cooling fluid so that the die will be immersed in the cooling fluid. The interior of the tank is kept under reduced pressure. At the inlet side of the die, a pre-cooling unit is provided which supplies a cooling fluid to the outer periphery of a resin tube which have been heated to a temperature above its softening point beforehand. The tube is expanded at least by the suction force applied thereto while passing through the die kept under reduced pressure. The cooling fluid in the tank and that supplied from the pre-cooling unit serve to reduce the friction between the tube and the inner periphery of the die, thus preventing the tube from expanding lengthwise. A jacket may be provided around the die to supply the cooling fluid.
REFERENCES:
patent: 3187383 (1965-06-01), Bacchus et al.
patent: 3248463 (1966-04-01), Wiley et al.
patent: 3327030 (1967-06-01), Reifenhauser
patent: 3370112 (1968-02-01), Wray
patent: 3539670 (1970-11-01), Hall
patent: 3541189 (1970-11-01), Yoshikawa et al.
patent: 3546745 (1970-12-01), Ball
patent: 3717426 (1973-02-01), Tucking et al.
patent: 3812230 (1974-05-01), Takahashi
patent: 3821349 (1974-06-01), Mozer
patent: 4029452 (1977-06-01), Schippers et al.
patent: 4530650 (1985-07-01), Milani
patent: 4543051 (1985-09-01), Maillefer
patent: 4575326 (1986-03-01), French
patent: 4740146 (1988-04-01), Angelbeck
Horioka Tatsuya
Okamoto Tatsuo
Hoag Willard E.
Sumitomo Electric Industries Ltd.
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