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Patent Searching and Data


Title:
INTERMEDIATE FILM FOR LAMINATED GLASSES, AND LAMINATED GLASS
Document Type and Number:
WIPO Patent Application WO/2018/181687
Kind Code:
A1
Abstract:
Provided is an intermediate film for laminated glasses, whereby it becomes considerably possible to prevent the formation of a double image in a laminated glass. The intermediate film for laminated glasses according to the present invention has an image corresponding region which has one end and the other end having a larger thickness than that of the one end and corresponds to a display region in a head-up display. When a position that is 2 cm away from the end of the one end side toward the other end in the display corresponding region is defined as a start point, a position that is 2 cm away from the end of the other end side toward the one side in the display corresponding region is defined as an end point, points are selected at 2 mm intervals between the start point and the end point, and a first partial wedge angle in each of 40-mm first partial regions which are centered at the points, respectively, and are located along a direction connecting the one end to the other end is calculated, the absolute value of the difference between the largest value among all of the values of the first partial wedge angles and the smallest value among all of the values of the first partial wedge angles is 0.4 mrad or less, and the wedge angle of the intermediate film as a whole is 0.1 mrad or more.

Inventors:
OOTA YUUSUKE (JP)
TSUNODA RYUTA (JP)
Application Number:
PCT/JP2018/013181
Publication Date:
October 04, 2018
Filing Date:
March 29, 2018
Export Citation:
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Assignee:
SEKISUI CHEMICAL CO LTD (JP)
International Classes:
C03C27/12; B32B17/10; B32B27/22; B32B27/30; B60J1/02
Domestic Patent References:
WO2016091435A12016-06-16
Foreign References:
JP2016216357A2016-12-22
JP2009035444A2009-02-19
JP2017502124A2017-01-19
JPH04502525A1992-05-07
Other References:
See also references of EP 3604252A4
Attorney, Agent or Firm:
MIYAZAKI & METSUGI (JP)
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