Vacuum glass and preparation method thereof

A vacuum glass and glass technology, applied in glass manufacturing equipment, glass production, glass molding, etc., can solve the problems of slow cooling speed, inability to pump air, unfavorable environmental protection, etc., to enhance adhesion and adhesion strength, and improve productivity and pass rate, the effect of promoting industrial production

Pending Publication Date: 2013-03-06
戴长虹
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The most critical technology for preparing vacuum glass is edge sealing. The existing vacuum glass edge sealing process is to form a staggered or inner chamfer at the peripheral welding of the upper and lower two pieces of glass, and place the low melting point glass powder on the staggered or inner chamfer. Heating to melt the low-melting-point glass powder, and using the capillary action of the liquid at high temperature to make the molten low-melting-point glass powder enter the gap between the upper and lower glasses, so as to realize the welding of the upper and lower glasses; the main disadvantage is that the sealing edge is uneven Irregularity, poor sealing reliability, unable to extract air from the welding place, a special air extraction port must be set up, welding and air extraction cannot be completed in one step, first welding and then air extraction, resulting in large stress on the edge of the glass, and the vacuum glass is easily damaged. Can only be done in one piece, low production efficiency, high cost, etc.
Patents CN201206116Y and CN201553684U disclose a vacuum glass edge sealing structure, which uses a ring groove around the glass and places low-melting glass powder in the ring groove, which solves the problem of uneven sealing edges of vacuum glass and poor sealing reliability. Advanced problems, but did not solve other problems of the existing vacuum glass edge sealing process
In the patent application 2012100754353, the applicant of the present invention overcomes the main shortcomings in the existing vacuum g

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  • Vacuum glass and preparation method thereof
  • Vacuum glass and preparation method thereof
  • Vacuum glass and preparation method thereof

Examples

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preparation example Construction

[0056] The upper and lower glasses are prepared from flat glass, and the preparation method further includes: preparing the flat glass into a convex glass by using a mold in a bending furnace through the gravity of the glass itself or an external pressure.

[0057] The preparation method further comprises:

[0058] The first step is to cut two pieces of flat glass of the required size according to the shape and size of the convex vacuum glass to be produced, and perform edge grinding, chamfering, making edge grooves (lower glass), cleaning, and printing edge strips Frame (upper glass) and drying process;

[0059] In the second step, put the processed two pieces of flat glass into the forming mold, put them into the hot bending furnace, raise the temperature to the softening temperature of the glass, rely on the gravity of the glass itself or the external pressure to make the glass downward to form a convex surface, and then put it into the furnace. When the temperature is low...

Embodiment 1

[0236] Embodiment 1: see figure 1 , The vacuum glass is composed of an upper convex glass and a lower convex glass. The periphery of the two pieces of glass is welded together by low-temperature glass solder, and the middle is a vacuum layer. The production method is as follows: First, cut two pieces of flat glass of the required size according to the shape and size of the vacuum glass to be produced, open edge sealing grooves at the peripheral welding place of the lower glass, and perform edge grinding, chamfering, cleaning and drying, and then The peripheral welding of the upper glass is prepared by mechanical spraying technology; secondly, put the two pieces of glass into the mold, put them in the hot bending furnace, heat up to the softening temperature of the glass at 550-750°C, and rely on the gravity of the glass itself to make the glass Form a convex surface downwards, and lower it to room temperature with the furnace; apply low-temperature glass solder evenly in the e...

Embodiment 2

[0239] Example 2: see figure 1 , The vacuum glass is composed of upper glass and lower glass. The two pieces of glass are tempered glass or semi-tempered glass, one of which is low-emissivity glass. The production method is as follows: First, cut a piece of the required size according to the shape and size of the vacuum glass to be produced. Flat glass and a piece of low-emissivity glass, choose low-emissivity glass as the lower glass, set up edge sealing grooves at the peripheral welding of the lower glass, grind the edges, chamfer, clean and dry the two pieces of glass, and place the upper glass at the peripheral welding Use screen printing technology to print the edge banding frame; secondly, put the two pieces of glass into two forming molds respectively. Between the lower molds, and can apply pressure to close the upper and lower molds, heat the forming mold with glass to the temperature of glass softening 650-700°C, rely on the pressure applied to the forming mold to mak...

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Abstract

The invention provides vacuum glass which comprises upper glass and lower glass, wherein the upper glass and the lower glass are convex glass or flat glass, an edge banding frame is arranged at the periphery of the upper glass, an edge groove is formed in the periphery of the lower glass, and the peripheries of the upper glass and the lower glass are welded together through a low-temperature solder material in a vacuum edge sealing furnace, and a closed vacuum layer is formed between the upper glass and the lower glass. The preparation method is simple; and the prepared vacuum glass and tempered vacuum glass can overcome the defects in the prior art, the gas tightness of the vacuum glass can be effectively ensured, and the strength and the heat insulation and sound insulation properties of the vacuum glass can be enhanced.

Description

technical field [0001] The invention relates to the technical field of glass deep processing, in particular to a vacuum glass and a manufacturing method thereof. Background technique [0002] The existing vacuum glass is generally composed of two pieces of flat glass. The glass is sealed with low-temperature glass solder around the glass, and there is a tiny support in the middle. A thin vacuum layer with a thickness of 0.1-0.2mm is formed between the two pieces of glass through the air extraction hole. Since there is no heat and sound transmission of gas, and the inner surface of the glass can have a transparent low-heat radiation film, the vacuum glass has good heat insulation and sound insulation effects, and is the best energy-saving glass. [0003] The most critical technology for preparing vacuum glass is edge sealing. The existing vacuum glass edge sealing process is to form a staggered or inner chamfer at the peripheral welding of the upper and lower two pieces of gl...

Claims

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Application Information

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IPC IPC(8): C03B23/24
CPCY02P40/57
Inventor 戴长虹
Owner 戴长虹
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