Non Autoclave Laminating
A new non-autoclave laminating technology has been developed by Gyrotron Technology Inc
. for producing laminated glass and solar panels without the use of an autoclave. This technology provides continuous production of any kind of laminated glass products. It can also be used to encapsulate different kinds of solar modules, including those with backsheets and flexible ones. This technology is suitable for clear, coated, mirrored or colored glass in an annealed or tempered state and also for laminating products sensitive to pressure and temperature as well as those with decorative and functional inserts.The main principle of the developed non-autoclave glass laminating technology is the exclusive heating of an adhesive film in a low-pressure environment via shortwave infrared radiation. At the beginning of the process this radiation penetrates through the glass and heats the film to a higher temperature than the surrounding glass sheets. As a result, the air, moisture, and gases that would otherwise be trapped are completely pumped out while the film is not sticking to the glass. The continuous heating leads to increasing temperatures of the glass sheets and the film then sticks to the glass completely. A very high quality laminating result is provided because there are no gases or steam surrounding the film. The sandwich lies freely on the conveyor without being subjected to pressure. Because all thermoplastic or thermoset adhesive films absorb short wave radiation better than glass any standard, commercially-available adhesive films such as PVB, EVA, TPU, etc are applicable for this technology.
The new non autoclave laminating technology is free from the problems of the exiting laminating technology that involves extended heating under high temperatures and high pressure (4MPa-20MPa). The main problem currently encountered is that the air that gets trapped between the film and glass surfaces. This air must be removed in order to prevent the laminate from bubbling which, again, would require long extensive heating and high pressure. The bubbling is an objectionable visible defect that, in most cases, is absolutely unacceptable. Bubbling within the laminate may effectively reduce its strength in that particular area and cause de-lamination. The existing technology requires intensive labor and maintenance, as well considerable capital expenditure to set up the necessary costly apparatus, such as autoclaves.
The new non-autoclave laminating technology offers substantial financial benefits, including reductions in capital, labor, energy, and floor space costs. Any size and variation of glass thickness can be laminated by using this technology. It is very productive and efficient and the laminating cycle can be very short, less than one minute. The new non-autoclave laminating technology provides uninterrupted lamination process and therefore it requires almost 50% less energy compared to common laminating lines with autoclaves.
Both large and small companies can benefit by using the new non autoclave laminating technology. A new glass laminating equipment called GLS has been developed by Gyrotron Technology Inc. based on this technology. It is fully automated and easy to operate. GLS requires minimal maintenance and no special knowledge or experience. It is the best option for bringing your laminating business in-house. The average return time on investment is less than one year.
For more information about the new non-autoclave laminating technology and glass laminating equipment please visit www.gyrotrontech.com.
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