Unlock instant, AI-driven research and patent intelligence for your innovation.

Door glass for vehicles

A technology for door glass and vehicles, which is applied to vehicle parts, windshields, glass/slag layered products, etc. It can solve the problems of color change at the end of the door glass, poor appearance of the end of the glass, and dazzling appearance of the end, etc., to achieve Excellent heat insulation, good appearance, and the effect of suppressing appearance defects

Active Publication Date: 2020-12-04
ASAHI GLASS CO LTD
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, especially when the door glass is moved up and down, the color tone of the edge of the door glass changes, causing a problem that it looks harsh.
On the other hand, when the outer periphery of the film is arranged to be close to the outer periphery of the glass plate in plan view in order to improve the appearance, the infrared reflective film is thermally shrunk by heating during manufacture, and with this, there is adhesion. The layer shrinks toward the center of the main surface, and the appearance of the glass end is poor.
[0008] However, as described above, in Patent Document 1 or Patent Document 2, the deterioration of the appearance caused by the infrared reflective film in the main surface of the laminated glass is suppressed, but the end portion that occurs when it is used for the door glass of a vehicle The problem of glare, or the appearance caused by the shrinkage of the adhesive layer is not solved

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Door glass for vehicles
  • Door glass for vehicles
  • Door glass for vehicles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0137] Hereinafter, the present invention will be described in more detail through examples. In addition, this invention is not limited to the Example demonstrated below. First, nine kinds of infrared reflective films A to I were produced by the following methods. The infrared reflective films A to H are constituted of laminates obtained by laminating two types of resin layers having different refractive indices, and are infrared reflective films having different thermal contraction rates. The infrared reflective film I is an infrared reflective film obtained by laminating two types of inorganic acid compound layers having different refractive indices on a PET film.

[0138] (Manufacture of Infrared Reflective Films A to H)

[0139] Resin A and resin B were used as two types of thermoplastic resins having different refractive indices. As the resin A, PET (crystalline polyester, melting point: 255° C.) having an intrinsic viscosity of IV=0.65 and a refractive index of 1.66 w...

example 1～14

[0144] its for and figure 2 The laminated glasses shown have the same laminated structure, w1=w2, and in each example, laminated glasses with different w1 (w2) were produced and evaluated as follows. Examples 1 to 8 are examples, and examples 9 to 14 are comparative examples.

[0145] (manufacture of laminated glass)

[0146] As the first glass plate, a heat ray-absorbing green glass (manufactured by Asahi Glass Co., Ltd.: NHI (common name)) with an outer peripheral dimension of 500 mm in length, 950 mm in width, and a plate thickness of 2 mm when the glass plate is viewed from the front was prepared. As the second glass plate, A transparent glass (manufactured by Asahi Glass Co., Ltd.: FL (common name)) having outer peripheral dimensions of 500 mm in length, 950 mm in width and 2 mm in thickness when viewed from the front was prepared.

[0147] The first adhesive layer uses a PVB film with a thickness of 0.76mm (made by Eastman Chemical Company: product number QL51), and t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
lengthaaaaaaaaaa
Login to View More

Abstract

Disclosed is a door glass for vehicles comprising a laminated glass obtained by layering a first glass plate, a first adhesive layer, an infrared reflection film, a second adhesive layer, and a secondglass plate in this order. The infrared reflection film includes a layered product obtained by layering 100 or more resin layers having different refractive indexes. The infrared reflection film hasa heat shrinkage ratio of more than 0.6% but less than 1.2% in a direction in which the heat shrinkage ratio is maximum and in a direction perpendicular to that direction (the heat shrinkage ratio isthe reduction ratio of the lengths in a predetermined direction of the infrared reflection film before and after having been maintained at 150 DEG C for 30 minutes). The outer perimeter of the infrared reflection film is located within the range of up to 10 mm inward from the outer perimeter of the laminated glass as viewed from the front, in a region in which the laminated glass can be viewed from the front when the laminated glass is attached to a vehicle.

Description

technical field [0001] The present invention relates to a vehicle door glass, and more particularly to a vehicle door glass made of laminated glass using an infrared reflective film. Background technique [0002] Conventionally, in order to reduce the air-conditioning load of a vehicle and improve occupant comfort, a door glass for a vehicle using a laminated glass provided with heat insulation is known. Among them, a laminated glass in which an infrared reflection film is arranged between two glass plates via an adhesive layer has been proposed. [0003] This laminated glass can be manufactured, for example, by stacking a glass plate, an adhesive layer, an infrared reflective film, an adhesive layer, and a glass plate in this order, and then heating and pressing the whole to integrate it. In the manufacture of such a laminated glass, due to uneven pressing due to uneven thickness of the adhesive layer, or differences in thermal shrinkage rates between the film and the adhe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C03C27/12B32B17/10B60J1/00
CPCB32B17/10036B32B2605/08B32B2307/416B32B2250/05B32B2250/42B32B27/08B32B27/36B32B17/10853B32B17/10871B32B17/10761B32B17/10293B32B2307/30B60J3/007B32B17/10183G02B5/282B32B17/10005B32B2367/00B32B17/10165B32B17/10779B32B2605/006B60J1/08
Inventor 中村辽太青木时彦
Owner ASAHI GLASS CO LTD