Insulating glass Ji insulation, noise, lighting and other fine features in one, is an effective energy-saving modern architecture means that it not only simplifies the air conditioning, ventilation and structural design of thermal facilities, reducing the cost of building decoration, but also increased the building efficient interior space. With the 90's glass curtain wall in China is rising rapidly, accelerating the development of hollow glass industry. Insulating glass in the expanding range of applications, in addition to the glass curtain wall, car, traffic, airplanes, etc. are widely used, but has been poured into the new building and the homes of ordinary people, people of the insulating glass quality requirements have become more sophisticated. Long life sealed insulating glass is not only good economic efficiency, but also has strong market competitiveness. Therefore, high quality and reliable production of insulating glass has become the pursuit of insulating glass manufacturers and research priorities. At present, the insulating glass production process is not to make perfect. To master and implement the right insulating glass production process is quality assurance and premise.
Butyl sealant, insulating glass coating is the first step in making is the key link, which determines the quality of insulating glass products, integrated performance (compliance with national standards for insulating glass five indicators). Butyl rubber, polyisobutylene with a small amount of composition-drying sealant, insulating glass in making the phenomenon does not appear dry, glue to machinery for assembly line use, to maintain a permanent coating quit after the viscous layer, also has excellent heat resistance, water resistance, will not flow under the sun and rain, and maintain a gas-tight insulating glass, and the second sealant together constitute an excellent anti-moisture system.
To ensure the appearance and quality of the insulating glass of butyl sealant used in the following technical requirements:
1, must choose the right guaranteed butyl seal Polystyrene;
2, a good initial tack and adhesion with the glass;
3, good sealing performance;

4, the coating shall be uniform, coating cross section to be consistent;
A theoretical study and practical problems of analysis
Here in the use of butyl sealant is easy to problems and solutions or suggestions:
A phenomenon: every article in the aluminum coating of butyl tape with edges, irregular.
Cause: The two-nozzle exit may have impurities or nozzle mouth is not smooth.
Solutions or suggestions: Check the nozzle exit of the two if there are impurities or smooth plastic nozzle mouth.
Two phenomena: a film strip with the first post-butyl sealant appears a gap (white line).
Reasons: first sealant coating is not the correct way.
Solutions or suggestions: the first sealant coating should be coated in one direction and press the appropriate force to prevent the air wrapped into the plastic, to reduce the insulating glass sealing performance.
3 phenomenon: do not go well out of heating, easy to break plastic (break).
Cause: The key is to use butyl sealant extrusion, the temperature in the extrusion process control is very important, whether it is appropriate temperature control, direct impact on butyl sealant flow in the whole process of the state, affecting the inner product quality and appearance, should pay special attention to temperature. Temperature is too high will cause excessive melting sealant, no strength or even impossible molding (flow phenomenon); temperature is too low, the flow of plastic is bad, squeeze glue machine, impact the construction schedule, which is the main reason for not smooth out . Another reason may be that the manufacture of butyl sealant mixture in the bubbles, resulting in broken plastic extrusion process.
Solutions or suggestions: the temperature of the selected generally to the extrusion temperature range of manufacturers to provide appropriate, extruder temperature, usually set at 110-130 ℃ cylinder between the head of the 112-132 ℃ room. In order to produce a certain pressure on the host, so that even melt extrusion, and called for the cylinder head temperature is higher than the temperature. Temperature has some lag, adjustments should be noted that heating and cooling should be gradual, coating before the start of the exhaust should be suitable to reduce the internal air bubbles and voids, to prevent extrusion plastic bubble breakage.
4 phenomenon: temperature control suitable for extrusion, but the separated pieces of aluminum adhesive butyl sealing adhesive connection is bad or poor.
Reasons: ⑴ dirty aluminum gutter or conveyor belt has oil and dust.
⑵ belt transmission too fast, too late to separate a coating of aluminum.
⑶ aluminum bulkhead deflection, plastic wrap or adhesive through the nozzle at the difficult position is not correct.
⑷ own tack sealant poor.
Solutions or suggestions:
⑴ aluminum gutter cleaning and editing and transfer belt, adjust the speed of conveyor belts
⑵ adjusted in proportion to the gap between the two nozzle.
When coated aluminum frame ⑶ should be vertically separated to prevent the glue or adhesive through the nozzle at the difficult position caused by incorrect aluminum gutter phenomenon is not glue.
⑷ butyl sealant is flexible both have sticky elastomers, suitable temperature and pressure by adsorption on clean aluminum extrusion, the melting of the butyl rubber is glued to the surface diffusion, gradually wet the adherend porous surface and surface-depth, this is a physical process, in the process of butyl rubber and is stuck (aluminum) line of contact between the surface only, and only until after lamination and is stuck between the surface contact. Therefore, the proper construction of pressure and temperature were conducive to this process. It is worth noting, rubber adsorption on the aluminum production will take some time (3 ~ 5MIN) in order to play the best adhesion.
Second Notice
1, open the original packaging, check for obvious particles and debris.
2, the coating speed not too fast, not to prevent the deposition head.
3, the coating can not lift the head or pressure roller, pressure of time is too short to re-adjust the pressure of wheel time.
4, coating placed over the aluminum frame time interval is not easy for too long, otherwise the effect of adhesive seal.
5, the conveyor belts such as the deviation should be promptly corrected, such as transmission with glue too much should be promptly removed, if necessary, apply a small amount of paraffin to anti-sticking tape.
6, the first sealant coating as much as possible in a short time after the lamination, to avoid environmental impact of temperature on adhesion, after the second roll has not yet painted the insulating glass sealant should be placed within a short time to heel , but not crash, avoid unnecessary dislocation.
7, dual-channel system to do before the insulating glass, must be double sealed plastic compatibility tests necessary to prevent the two sealant compatibility.