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Patent Searching and Data


Title:
LAMINATED GLASS
Document Type and Number:
WIPO Patent Application WO/2017/221930
Kind Code:
A1
Abstract:
A laminated glass for an automobile front windshield is provided which has high sound insulating properties and which does not substantially distort vision through the laminated glass and impair visibility of the driver. This laminated glass for an automobile front windshield is provided with a pair of glass plates facing one another, and an interlayer which is held between the pair of glass plates, is formed by alternately laminating skin layers with a glass transition point of greater than or equal to 15°C and core layers with a glass transition temperature of less than 15°C, and comprises two or more of said core layers. In a test region A defined by JIS R3212 (1998), the maximum value of the roughness measured at multiple prescribed points by a prescribed method is less than or equal to 3 μm.

Inventors:
NAKAMURA ATSUSHI (JP)
Application Number:
JP2017/022693
Publication Date:
December 28, 2017
Filing Date:
June 20, 2017
Export Citation:
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Assignee:
ASAHI GLASS CO LTD (JP)
International Classes:
C03C27/12; B32B17/10; B60J1/00
Domestic Patent References:
WO2013031884A12013-03-07
WO2016052672A12016-04-07
WO2017099166A12017-06-15
Foreign References:
JPH05330864A1993-12-14
JP2015151308A2015-08-24
JPH0940444A1997-02-10
JPH10338556A1998-12-22
Other References:
See also references of EP 3476811A4
Attorney, Agent or Firm:
SAKURA PATENT OFFICE, p. c. (JP)
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