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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/2018/168904
Kind Code:
A1
Abstract:
Provided is an intermediate film for laminated glasses, which makes it possible to reduce the change in a partial wedge angle during the production of a laminated glass and also makes it possible to prevent the formation of a double image in the laminated glass. The intermediate film for laminated glasses according to the present invention has one end and the other end that has a higher thickness than that of the one end, wherein the thickness of the intermediate film does not increase uniformly as observed in the direction from the one end toward the other end and, when the intermediate film for laminated glasses is used as an intermediate film before compression bonding, the film is subjected to a given process to produce an intermediate film after compression bonding, and a partial wedge angle is measured in each of the intermediate film before compression bonding and the intermediate film after compression bonding, the average of the percentages of change in the partial wedge angle which is determined in accordance with formula (X) is 10% or less. Formula (X): Percentage of change in partial wedge angle (%) = |((partial wedge angle of intermediate film after compression bonding)-(partial wedge angle of intermediate film before compression bonding))/(partial wedge angle of intermediate film before compression bonding)|×100

Inventors:
NISHINO HIROMITSU (JP)
KIDO KOJI (JP)
OOTA YUUSUKE (JP)
Application Number:
PCT/JP2018/009895
Publication Date:
September 20, 2018
Filing Date:
March 14, 2018
Export Citation:
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Assignee:
SEKISUI CHEMICAL CO LTD (JP)
International Classes:
C03C27/12; B32B17/10; B32B27/30; B60J1/02
Domestic Patent References:
WO2016052422A12016-04-07
WO2016094239A12016-06-16
WO2017126468A12017-07-27
Foreign References:
JP2011505330A2011-02-24
JP2004536009A2004-12-02
JP2017105665A2017-06-15
JPH04502525A1992-05-07
Other References:
See also references of EP 3597613A4
Attorney, Agent or Firm:
MIYAZAKI & METSUGI (JP)
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