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should be higher than that of pure polyethylene plastic about 1/3. Carrying a ton of pure plastic pallet 1.2m * 1.2m only 2Okg, while wood pallets to 3Okg above, foamed plastic products compared with traditional wood, density can be reduced 2O% ~ 45%, closer to wood. Usually the cost of resin to account for material costs 8O ~ 9O, foamed technology can save nearly 2 times the cost. Second, rigidity and poor impact resistance. In order to increase the rigidity necessary to increase the cross-sectional area of the profile cross-sectional shape or profile change to solve.pvc coating chain link fence Improve impact resistance is required to improve the interface with the polyolefin flour affinity and compatibility. Third, low productivity, production was lower than the general single lOOkg / h, formed a certain scale extrusion production line will increase, the need to increase fixed assets. So in recent years, micro-foamed WPC as a replacement for plastic processing developed rapidly. Micro-foam extrusion need to go through three stages, namely the production phase of the cell nuclei bubble growth stage and fixed foam molding stage. To obtain good foam plastics,advertising pvc forming board the number of multi-cell, small diameter, evenly distributed, the outer crust good effect, and smooth profile, select high-foaming agent is a key determinant of quality profiles. For Wood / PVC-foam composites, machining process due to the heat-sensitive polymer polyvinyl chloride belongs, requires processing temperature range is very narrow, high temperature can cause thermal decomposition of the polymer,cherry kitchen cabinets Switzerland