Title:
MAIN ROLLER FOR WIRE SAW
Document Type and Number:
WIPO Patent Application WO/2011/122144
Kind Code:
A1
Abstract:
The disclosed main roller for a wire saw has wire grooves with increased rigidity, improves cutting precision, and can improve the yield of a product. As well as maintaining the rigidity of the partitions and a high level of yield, even when thinning a product, the main roller inhibits early wear of the wire grooves, greatly extending the life of the main roller. At least the outer layer of the main roller comprises a urethane resin, and a plurality of wire grooves are circumferentially formed on the outer peripheral surface thereof. The urethane resin is a cured product of a composition comprising 1,5 naphthalene diisocyanate [A], a polyester polyol [B], and a hardening agent [C] having a lower molecular weight than the molecular weight of the polyester polyol [B]. Compenent [C] is characterised by containing a diol (C1) and a triol (C2).
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Inventors:
SEIYAMA JUNJI (JP)
YANAGIMOTO MASATO (JP)
NAGASE TAKAYUKI (JP)
YANAGIMOTO MASATO (JP)
NAGASE TAKAYUKI (JP)
Application Number:
PCT/JP2011/053288
Publication Date:
October 06, 2011
Filing Date:
February 16, 2011
Export Citation:
Assignee:
BANDO CHEMICAL IND (JP)
SEIYAMA JUNJI (JP)
YANAGIMOTO MASATO (JP)
NAGASE TAKAYUKI (JP)
SEIYAMA JUNJI (JP)
YANAGIMOTO MASATO (JP)
NAGASE TAKAYUKI (JP)
International Classes:
B24B27/06; B28D5/04; H01L21/304
Domestic Patent References:
| WO2009131106A1 | 2009-10-29 |
Foreign References:
| JP2006051567A | 2006-02-23 | |||
| JP2009241224A | 2009-10-22 | |||
| JP2006075969A | 2006-03-23 |
Attorney, Agent or Firm:
AMANO KAZUNORI (JP)
Kazuki Amano (JP)
Kazuki Amano (JP)
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Claims: