How to distinguish the true and false skinning building materials of PVC skinning foam boardHow to distinguish the true and false skinning building materials of PVC skinning foam board
With its unique performance and beautiful appearance, PVC skinning board is widely used in major industries. I believe many customers are more interested in how to distinguish its true and false.
PVC crust foam board has excellent corrosion resistance, insulation, and has a certain mechanical strength; after secondary processing can be made into sulfuric acid (hydrochloric acid) tank (barrel box); empty needle rack for medicine, chemical rack ; Public toilet water tank; all kinds of special-shaped products, containers such as template, decorative board, exhaust pipe, equipment lining of processed products. It is an ideal material for chemical industry, building materials, decoration and other industries.
PVC crust foam board is also called PVC crust sheet. Its chemical composition is polyvinyl chloride. It is widely used in passenger car, train car roof, box core layer, interior decoration board, building exterior wall board, interior decoration. Boards, offices, residences, building partitions in public places, commercial decorative racks, clean room boards, ceiling boards, screen printing, computer lettering, advertising signs, exhibition boards, sign boards, photo album boards and other industries, and chemical corrosion Engineering, thermoformed parts, plates for cold storage, special cold-preservation projects, environmentally-friendly plates, sports equipment, breeding materials, seaside moisture-proof facilities, water-resistant materials, art materials, and various portable partitions instead of glass ceilings.
True skinning uses the Seluka process to form a dense and hard skinning layer on both sides of the board, which can increase the hardness and nail holding power of the board. These physical properties are very important for furniture or house decoration.
Celuka method (Celuka) is also called controllable foaming method. It is currently widely used and invented by French gine kulmann company. It is one of the first patented extrusion foaming molding methods.
The principle of the Seluka method is that the outer skin of the melt is compressed and cooled in the styling device directly connected to the die, and the core die in the cavity ensures that there is space inside when the extrudate leaves the die. These spaces It is filled by the free foaming of the melt in the mold. The cooling strength, the size of the core mold, and the extrusion speed can affect the density of the foamed core layer and the thickness of the outer layer crust. The complex shapes produced by this method have the characteristics of low density, high hardness and smooth surface.
To identify whether the PVC board has (true) skinning, it is actually very simple! Use your thumb nail to press firmly on the surface of the PVC board, and then carefully check whether there are deep dents, if there are, it is obviously fake, it is best No need to. In addition, there is a core layer in the middle of the real skinned foam board, and the core layer in the middle of the real skinned foam board is clearly visible.