Low radiation glass capable of being post-treated and its production process

Abstract

The low radiation glass capable of being post-treated is prepared through cleaning glass substrate, drying and coating film, and features that the vacuum magnetically controlled sputtered film on the glass substrate includes Si3N4 film, ZnSnOx film, NiCrOx film, Ag film, NiCrOx film, ZnSnO film and Si3N4 film successively coated. The coated glass has low radiation, stable optical performance, different colors, capacity of being toughened and / or bent at high temperature up to 700 deg.c, and capacity of being cut and treated in other modes.

Description

technical field [0001] The invention relates to low-emissivity glass, in particular to low-emission glass capable of subsequent processing and a manufacturing method thereof. Background technique [0002] Low-emissivity glass (also known as LOW-E glass) is a film system product composed of multiple layers of metal or other compounds coated on the surface of the glass. Due to the low emissivity of the silver layer, the low emissivity glass has a high transmittance to visible light, a high reflectivity to infrared rays, and good heat insulation performance. [0003] The film layer structure of ordinary low-emissivity glass produced by vacuum magnetron sputtering is generally: glass / base dielectric composite layer / barrier layer (1) / Ag layer / barrier layer (2) / upper dielectric composite layer. [0004] The dielectric combination layer is generally a metal or non-metal oxide or nitride, such as TiO 2 , ZnSnOx, SnO 2 , ZnO, SiO 2 、 Ta 2 o 5 、BiO 2 、Al 2 o 3 , ZnAl 2 o 4 ...

AI Technical Summary

Problems solved by technology

These phenomena are the appearance of the damaged silver layer, and cannot be mass-produced

[0007] In traditional low-e glass processing, glass can only be tempered first and then coated. Traditional low-e energy-saving glass cannot be extended to automobile glass, nor can it be extended to residential buildings on a large scale. This is because:

[0008] 1. Unable to achieve curved glass coating

[0009] Bending toughened and hot-bent glass is widely used in modern buildings and automobile windshields. Traditional off-line low-e coated glass cannot be subjected to subsequent thermal processing such as bent toughening and hot bending.

None of the existing domestic architectural coated glass production lines can coat bent tempered and hot bent glass substrates.

[0010] 2. Coating operation efficiency is low

These patches are included in the production order again to arrange production, and the patch cycle is long

[0014] 3. Glass transportation costs are high

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