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Title:
UNDERWATER CUTTING PELLETIZER, KNIFE USED FOR THE SAME PELLETIZER, AND UNDERWATER CUTTING PELLETIZATION METHOD USING THE SAME KNIFE
Document Type and Number:
WIPO Patent Application WO/1998/039147
Kind Code:
A1
Abstract:
A knife used for an underwater cutting pelletizer adapted to pelletize a molten resin, which is forced out from a die into a water chamber, by cutting the molten resin with a cutter having the knife rotated in a die-opposed state, the knife of the cutter being provided on the side thereof which is opposite to the die-facing side thereof with a mountain-shaped guide surface for guiding a water current in the direction in which the water current is drawn toward the die. More concretely, let B� and D� equal a transition angle from a front surface to an upper surface of the knife and a transition angle from the upper surface to a rear surface thereof respectively. The knife surface is set so as to satisfy the expression 150�$m(F)(B+D)/2$m(F)180�. Let A and C equal to a maximum distance between a cutter surface and an inner surface and a maximum thickness of the knife respectively. The maximum thickness of the knife is set so as to satisfy the expression C$m(F)1.2A.

Inventors:
KASAI SHIGEHIRO (JP)
TAKAHASHI KATSUNORI (JP)
TANAKA TATSUYA (JP)
KURODA YOSHINORI (JP)
KASHIWA MASAHIKO (JP)
Application Number:
PCT/JP1998/000856
Publication Date:
September 11, 1998
Filing Date:
March 02, 1998
Export Citation:
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Assignee:
KOBE STEEL LTD (JP)
KASAI SHIGEHIRO (JP)
TAKAHASHI KATSUNORI (JP)
TANAKA TATSUYA (JP)
KURODA YOSHINORI (JP)
KASHIWA MASAHIKO (JP)
International Classes:
B29B9/06; B26D1/00; (IPC1-7): B29B9/06
Foreign References:
JPH0957745A1997-03-04
JPS6073811A1985-04-26
JPS61105114U1986-07-04
JPH03261512A1991-11-21
JPH0740112U1995-07-18
Other References:
See also references of EP 0914915A4
Attorney, Agent or Firm:
Yasuda, Toshio (1013 Mikuriy, Higashi-Osaka-shi Osaka, JP)
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