How Glass Factories Manufacture Double Pane Glass
In modern building materials production, double pane glass, also known as Insulated glass, its production process is inseparable from the refined control and professional technology of glass factories. It is not a simple splicing of two pieces of glass, but a multi-link precision process. Each step directly determines the quality of double pane glass and its subsequent use effect. As the core place for professional production of Insulated glass, glass factories always follow standardized processes to ensure that each piece of double pane glass meets industry standards, laying a solid foundation for the excellent performance of double pane windows.
The first step in manufacturing double pane glass is the strict selection of raw glass by glass factories. Usually, float glass with a flat surface and high transparency is selected as the basic raw material to lay a good foundation for subsequent production. After selection, glass factories will cut the glass according to actual needs, accurately controlling the dimensional error within millimeters to avoid affecting the lamination process. The cut glass needs to be edge-ground to remove burrs, which not only ensures use safety but also improves sealing performance. Subsequently, glass factories clean and dry the glass with professional equipment and deionized water, and enter the next step within 1 hour to prevent secondary pollution, which is the key to ensuring the sealing performance of Insulated glass.
Spacer processing and desiccant filling are important links in the production of double pane glass. Glass factories use aluminum alloy or flexible warm-edge materials to make spacers, which are cut and bent according to size to ensure close fit with the edge of the glass. The bent spacers will be filled with desiccant to absorb moisture in the hollow layer and prevent double pane glass from fogging and dew formation. Glass factories strictly control the filling amount and seal immediately after filling to avoid desiccant failure. Sealing and lamination is the core process. Glass factories first apply butyl rubber on both sides of the spacer, then laminate and flatten the two pieces of glass with the spacer, and then apply polysulfide rubber or silicone rubber for secondary sealing. Some glass factories also fill inert gas to improve thermal insulation performance.
After production, glass factories conduct strict inspections on each piece of double pane glass, checking for sealing, size, surface flatness and other issues. Unqualified products are reworked or scrapped to ensure compliance with Insulated glass standards. After passing the inspection, glass factories package double pane glass with buffer materials to avoid damage during transportation and deliver it to downstream manufacturers for the production of double pane windows. Throughout the process, glass factories control every detail with professional technology to achieve the high-quality performance ofdouble pane glass.
