Title:
RELEASE SHEET AND BACKING SHEET LAMINATE INCLUDING SAME
Document Type and Number:
WIPO Patent Application WO/2015/034006
Kind Code:
A1
Abstract:
The present invention provides a release sheet which is capable of imparting stiffness to a backing sheet laminate and improving the handling characteristics of the backing sheet laminate, and which prevents the formation of a depression in the surface of the backing sheet by the rolling-up initiation end of the backing sheet laminate when the backing sheet laminate is rolled up. This release sheet is peelably disposed on a pressure-sensitive adhesive layer laminated onto a backing sheet which is to be interposed between an object to be polished and a platen. This release sheet is characterized by comprising: a sheet body which comprises a polyester resin film having a thickness of 10-60 µm and a paper base laminated to the polyester resin film; and release agent layers laminated on both surfaces of the sheet body. The release sheet is further characterized by having a rectangular shape and having a width of 2.4 m or greater and an overall thickness of 190 µm or less.
Inventors:
SAKAI KENJI (JP)
MATSUI RIE (JP)
MATSUI RIE (JP)
Application Number:
PCT/JP2014/073346
Publication Date:
March 12, 2015
Filing Date:
September 04, 2014
Export Citation:
Assignee:
SEKISUI CHEMICAL CO LTD (JP)
International Classes:
B32B27/00; B24B37/30; B32B27/10; B32B27/36; C09J7/21; H01L21/304
Domestic Patent References:
| WO2010150326A1 | 2010-12-29 |
Foreign References:
| JP2008098356A | 2008-04-24 | |||
| JP2009209320A | 2009-09-17 |
Attorney, Agent or Firm:
YAMAMOTO, TAKUYA (JP)
Takuya Yamamoto (JP)
Takuya Yamamoto (JP)
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