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The manufacturing process of fireproof board is made up of high-grade imported decorative paper and imported kraft paper through impregnation, drying, high temperature and high pressure processing steps. First, the high-grade imported decorative paper and imported kraft paper are respectively impregnated with trimeric hydrogen ammonia resin and benzene. In the resin reaction tank, the impregnation is dried for a period of time, and then cut into the required size, and then the impregnated decorative paper is stacked with a plurality of kraft papers (depending on the thickness of the fireproof board), and the pressure is placed. Under the machine, at a high temperature of 300 degrees Fahrenheit (about 150 degrees Celsius), the pressure of 1430 pounds per square inch is applied, and the pressure is continuously balanced for one hour, and then it is made by trimming, sanding, quality inspection and other steps.
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Ningbo Ifilter Purification Equipment CO.,Ltd. , https://www.aifilterparts.com