The basic production process of insulating glass consists of glass cleaning, molecular sieve irrigation, butyl sealant coating, lamination, second sealant coating and other links. Each link is related to the choice of materials and the proficiency of the operator, as well as the quality of the processing.

1. Glass cleaning

Cleaning glass is the first link in the production of insulating glass, and it is also one of the most important links to ensure the sealing of insulating glass. If the oil and sweat on the glass can not be thoroughly cleaned off, the adhesive force of the sealant on the glass will be greatly weakened, thus reducing the sealing effect of the insulating glass. It should be emphasized that the conditions considered in the selection of desiccant, sealant and spacer are based on the premise of glass cleaning, and the sealing of insulating glass is to a considerable extent based on whether the glass cleaning is clean, and the cleaning of glass is the main measure of appearance quality. However, in practice, people often pay insufficient attention to cleaning glass and must be corrected.

2, the choice of desiccant

There are three main functions of desiccant: adsorption of water sealed in the air; Adsorption of volatile organic solvents and adsorption of water vapor entering the air layer during the life of the insulating glass. The purpose is to maintain the insulating glass has a qualified initial dew point, therefore, the conditions for selecting the appropriate desiccant must simultaneously meet the three functions that the desiccant should have. If the desiccant has poor adsorption capacity and can not effectively adsorb the water entering the air layer through diffusion, it will lead to the accumulation of water in the air layer, the water pressure increases, and the dew point of the insulating glass rises, then the possibility of atomization is very high. In addition, when selecting the desiccant, their respective properties must be considered comprehensively. The selection of the desiccant is directly related to the kind of insulating glass glue selected. It must be considered in combination

The edge seal failure of the insulating glass means that the window loses its due function, not only the design energy-saving performance of the window can not reach, but also consumers can not see through the fog of the air layer, affecting the perspective of the insulating glass, and reduce the heat insulation effect, long-term fog will make the inner surface of the glass mildew or alkali, resulting in day shift, seriously affecting the appearance quality of the insulating glass. It can be seen that the selection of high-quality insulating glass sealant is the first and key to prevent the atomization of insulating glass. The selected insulating glass sealant should meet the requirements of national or industry standards, and the first and second sealant of double insulating glass should be suitable, and cannot be miscible or react, otherwise tourists can lead to glass surface pollution and even aging.

3, double insulating glass coating - film - glue

The composite sheet is the middle of the double insulating glass, and the coating of butyl glue before the sheet determines the comprehensive quality of the insulating glass. Therefore, the production process should be strictly controlled, to eliminate the phenomenon of leakage, broken glue and the negligence of sealing, there is never a hidden danger of air leakage, the first pipe of good sealing, the second sealant after the tablet is applied, according to the manufacturer's provisions of a reasonable ratio to make the two components fully mixed, accurate glue, to avoid the phenomenon of under-glue and more glue, Successfully completed the last process of double insulating glass production. If there is a gap between the two sealant, it will cause air leakage, and attention should be paid to the application of too thin second sealant, after the installation and use of a period of time, by the environmental temperature changes, the role of the sun rapid wind pressure, the sealant will form cracks (even if a very small crack exists), water and gas may slowly enter the rubber layer, forming atomization, losing its sealing, losing the sealing effect.

The double-channel insulating glass made needs a parking period of about a week, so that the double-channel insulating glass sealant has sufficient time for chemical bonding to achieve the best sealing state. If the parking period is too short, the sealant does not have enough time to bond, after handling, vibration, sun exposure, especially rain, the sealing effect of the sealant will be greatly reduced, and the atomization phenomenon will occur in a short period of time.

4. Assembly of insulating glass

When assembling insulating glass, if the insulating glass sealant is in contact with other sealing materials (especially the curtain wall weatherproof sealant), and these sealing materials contain plasticizing components that can dissolve butyl sealant, these plasticizing components will migrate to the surface of the insulating glass first sealant through the second seal of the insulating glass. Then dissolve the first sealant and produce thinning, flowing and other phenomena. Therefore, when assembling insulating glass, it is necessary to do the corresponding compatibility test, choose the matching sealing material that is soluble with the insulating glass sealant, and it is best to choose the sealing material of the same manufacturer to reduce the occurrence of such phenomenon.