Title:
プラスチック押出ダイスの加熱方法、プラスチック押出ダイスおよび押出機
Document Type and Number:
Japanese Patent JP3582065
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To enhance a heating efficiency around a nozzle. SOLUTION: A solenoid coil C is arranged around a nozzle P of a die 10. Around the coil C, for example, a magnetic permeable sheet F made of iron is arranged. Consequently, a magnetic flux generated by the coil C induces an eddy current around the nozzle P and thereby, the surroundings of the nozzle P are heated to prevent the die from being clogged. On the other hand, the magnetic flux generated by the coil C penetrates the magnetic permeable sheet F having a low magnetic resistance on the opposite side to the nozzle P, hence there is no substantial energy consumption. As a result, the heating efficiency around the nozzle P is increased.
Inventors:
Yutaka Mizutani
Tetsuo Makita
Hideo Kubo
Tetsuo Makita
Hideo Kubo
Application Number:
JP2001255524A
Publication Date:
October 27, 2004
Filing Date:
August 27, 2001
Export Citation:
Assignee:
Japan Steel Works, Ltd.
International Classes:
B29B9/06; B29C48/30; B29C48/92; (IPC1-7): B29C47/12; B29B9/06; B29C47/92
Domestic Patent References:
| JP2969437B2 | ||||
| JP53071285A | ||||
| JP7001554A | ||||
| JP64087213A |
Attorney, Agent or Firm:
Ari Chika Genshiro