Glass, glass forming method and glass forming apparatus

By setting infrared reflective film layers on both sides of the glass and controlling the difference in wind pressure intensity of the air-cooling device, the problem of uneven compressive stress on the surface of coated skylight products was solved, thereby achieving an overall improvement in the strength of the glass and uniformity of surface strength.

CN117326790BActive Publication Date: 2026-07-14FUYAO GLASS IND GROUP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
FUYAO GLASS IND GROUP CO LTD
Filing Date
2023-10-07
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

The surface compressive stress of existing mass-produced coated skylight products cannot meet customer requirements, mainly due to uneven mechanical stress caused by uneven cooling rates between the glass surface coating and the internal glass, which affects the overall strength of the glass.

Method used

By setting infrared reflective film layers on both sides of the glass and controlling the difference in wind pressure intensity during air cooling, the compressive stress on both surfaces is greater than or equal to 30 MPa. The cooling rate of the glass is balanced by using heating, bending and shaping and air cooling methods, and by using air cooling devices and air grids to control the difference in cooling rate.

Benefits of technology

This achieves an overall increase in the strength of the glass, meets customer needs, ensures uniform compressive stress on both surfaces of the glass after cooling, and improves the surface strength and overall performance of the glass.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application provides glass, a glass forming method and a glass forming device. The glass comprises a first surface and a second surface arranged oppositely, and the first surface is provided with an infrared reflection film layer. The glass forming method comprises the following steps: heating the glass; bending and forming the glass; and blowing and cooling the glass to obtain glass with surface compressive stress of the first surface and the second surface greater than or equal to 30 MPa, wherein the air pressure intensity of blowing the first surface side of the glass is less than the air pressure intensity of blowing the second surface side of the glass. The glass forming method provided by the application can obtain glass with surface compressive stress of the first surface and the second surface greater than or equal to 30 MPa.
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