In the production of insulating glass (also known as double glazing or double-pane glass), the following processes and controls are used to enhance the performance of the glass:
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Glass Cleaning: Ensuring the glass surface is free from oil and sweat to strengthen the adhesive bond between the sealant and the glass, which is crucial for the sealing effectiveness.
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Molecular Sieve Filling: Using vacuum filling methods to ensure the molecular sieve is evenly distributed inside the insulating glass to maintain the dryness of the air gap.
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Butyl Sealant Application: Applying a first layer of sealant with an extremely low water vapor transmission rate to enhance the air tightness of the insulating glass.
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Glass Assembly: Joining the two panes of glass with the applied sealant to form the basic structure of the insulating glass.
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Second Sealant Application: Applying a second layer of sealant, either polysulfide or silicone, to improve durability and UV resistance.
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Production Environment Control: Maintaining the appropriate production environment temperature to reduce moisture diffusion through polymers and choosing sealants with low permeability coefficients.
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Process Time Reduction: Minimizing the exposure time of the desiccant to the atmosphere to maintain its high adsorption capacity.
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Selection of Aluminum Profiles and Desiccants: Choosing aluminum profiles with small gas channels and desiccants with high and lasting adsorption rates.
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Inert Gas Filling: Filling the space between the glass panes with inert gases such as argon and krypton to enhance thermal insulation performance.
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Dew Point Control: Ensuring the dew point of the insulating glass's air gap is below -40 degrees Celsius to prevent condensation.
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Use of High-Quality Raw Materials: Selecting glass types that meet standards, such as float glass, laminated glass, tempered glass, and sealants and gaskets that satisfy performance requirements.
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Thermal Treatment: Heating the glass to a specific temperature and using multiple sets of rollers to gradually press the glass to the required thickness, ensuring uniformity.
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Sealing Process: Applying a specific sealing procedure that includes pressing, cornering, and pinching to ensure the sealing integrity of the insulating glass.
Through these processes and controls, the thermal insulation, sound insulation, durability, and overall performance of insulating glass can be effectively improved to meet the requirements for energy efficiency and aesthetics in construction.
