Intermediate film for laminated glasses, and laminated glass
US11685143B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2018 |
| Grant date | Jun 27, 2023 |
| Priority date | — |
| Expiry date | Jul 11, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60K35/415
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Provided is an interlayer film for laminated glass with which double images in laminated glass can be significantly suppressed. An interlayer film for laminated glass according to the present invention has one end, and the other end having a larger thickness than the one end, and has a region for display corresponding to a display region of a head-up display, and when points are selected at 2 mm intervals while taking a position of 2 cm from an end part of the one end side toward the other end of the region for display as a start point, and a position of 2 cm from an end part of the other end side toward the one end of the region for display as an end point, and first partial wedge angles are calculated in respective first partial regions of 40 mm in the direction connecting the one end and the other end centered at respective selected points, an absolute value of difference between the maximum value among all the first partial wedge angle values and the minimum value among all the first partial wedge angle values is 0.4 mrad or less, and the interlayer film as a whole has a wedge angle of 0.1 mrad or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.