Generally, the drying technology of building coated board is earth kiln, which is used to dry the wood, so as to reduce the cost. Then, when the Kang is burned at one time, some materials have been dried, but some have not. Therefore, it is necessary to dry them once, using steam drying.
Thirdly, before finishing, it is necessary to carry out secondary microwave drying to evenly evaporate the water from the inside to the outside, so that the wood will not crack, deform and damage the internal stress of the wood due to the sharp cold and heat.
The building membrane board has a polyester coating that is as smooth as a mirror, so its surface is hard and smooth, strong and durable, and it can be demoulded without any release agent. At the same time, its wear resistance is stronger, which is dozens of times that of ordinary phenolic impregnated paper coated board.
Therefore, the surface is crack resistant, weather resistant, non layering and smooth, which can make a smooth concrete surface and reduce the construction cost.
