Hollow glass with edge sealed by PUR glue and manufacturing method thereof

Abstract

The invention belongs to the technical field of production of hollow glass, and discloses hollow glass with the edge sealed by PUR glue and a manufacturing method thereof. The hollow glass with the edge sealed by the PUR glue comprises glass, spacing bars, a bonding seal between the glass and the spacing bars and a bonding seal on the periphery of the glass, wherein the bonding seal between the glass and the spacing bars and the bonding seal on the periphery of the glass adopt PUR glue, and the bonding force and the sealing performance are improved by utilizing the chemical reaction between the PUR glue and water adsorbed on the surfaces of the glass and the spacing bars, so that the service life of the hollow glass is prolonged; small-specification hollow glass with a large glue proportion is used, moisture in the hollow cavity is absorbed by utilizing a moisture absorption effect generated by a wet reaction curing mechanism of the PUR glue, and no molecular sieve is arranged in the spacing bars; and large-specification hollow glass with a small glue proportion is used, molecular sieves are arranged in spacing bars, and preferably, the molecular sieves with a slow absorption function are adopted. The method is simple in technological process, high in mechanization and automation degree, short in production period, high in production efficiency and good in product quality.

Description

technical field [0001] The invention belongs to the technical field of hollow glass production, in particular to a hollow glass edge-sealed with PUR glue and a manufacturing method thereof. Background technique [0002] At present, hollow glass is a kind of building energy-saving product with good heat insulation and sound insulation performance. Fog or condensation often occurs, and serious water retention occurs, which greatly affects the thermal insulation performance and visual effect of the insulating glass, and greatly shortens its service life. The occurrence of this phenomenon is related to the production and assembly of insulating glass. There is a very close relationship between craftsmanship and the technical proficiency of workers. The main reason for the unstable quality of the existing insulating glass is that the production and assembly process is backward, the degree of mechanization and automation is low, and the responsibility and operation level of the wo...

AI Technical Summary

Problems solved by technology

[0009] (1) During use, especially in a low-temperature and cold environment, fogging or condensation often occurs in the hollow layer of the insulating glass, and serious water retention occurs, which greatly affects the insulation of the insulating glass. Thermal insulation performance and visual effect greatly shorten its service life

[0010] (2) The main reason for the unstable quality of the existing insulating glass is that the production and assembly process is backward, the degree of mechanization and automation is low, and the responsibility and operation level of the workers are restricted, etc.

[0011] (3) The main disadvantages of the existing insulating glass edge seals are: firstly, although the sealing performance of butyl rubber is good, it does not fully seal the hollow layer; structural adhesive can fully seal the hollow layer, but the sealing performance is poor Second, the curing time of the structural adhesive is too long, which not only seriously affects the production efficiency, but also has an adverse effect on the product quality

[0012] (4) Molecular sieves must be added as desiccant in the spacer frames of the existing hollow glass. In the environment with high humidity, especially in high temperature and high humidity in summer, the molecular sieves will absorb a large amount of moisture in the outside air, thereby greatly improving its lifespan. shortened, thus affecting the service life of insulating glass

[0013] (5) The hygroscopicity of PUR glue and the hygroscopicity of molecular sieve are contradictory and difficult to reconcile; when the amount of molecular sieve is large and the water in the hollow cavity is small, the reaction of PUR glue is not complete, which affects the adhesion, sealing and mechanical strength of PUR glue; molecular sieve When the dosage is small and there is a lot of moisture in the hollow cavity, although the PUR glue can react completely, the moisture in the hollow cavity cannot be removed, which affects the service life of the insulating glass

[0014] (6) The viscosity of PUR glue is small after heating and melting, and the glue layer should not be too thick when applied. However, the bending radius of the corner of the existing spacer frame is too large, and there is a large gap with the glass, so the PUR glue cannot be filled.

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