PVC arch extruded foam board is a practical raw material, because its key component is polyethylene, so it is also known as polyvinyl chloride foam board, whether in the roof of the car box or the interior decoration of some buildings we can see the existence of the product, the product has moisture insulation and heat preservation, sound insulation and noise reduction, high temperature and other advantages, so how do we select a trustworthy PVC arch extruded foam board according to the examination of its characteristics?
A, PVC arch extruded foam board surface inspection
In the PVC arch extruded foam board surface to carry out checks, to touch its surface first, to see its tactile light flatness, mechanical equipment grain fine level, in addition to also see its board surface color has a grayish, PVC arch extruded foam board surface of all the normal color for the creamy white and surface without stains, no small pits, no pinhole and holes, and not easy to have gaps.
Second, the side inspection of PVC arch extruded foam board
In addition to the inspection of the PVC arch extruded foam board board surface, but also to carry out checks on its side, in the inspection of the side of the product need to look at the flatness of its wound and its porosity of the fine relative density, in the inspection of the board side of the whole process to ensure that the side of no pinhole, no thick holes, no significant fall powder, in addition to the need to see whether its cut material chemical fibers fall down and chipped edge condition, if the whole process of inspection in the If the above problems occur during the whole process of inspection, it will cause great inconvenience to the production and processing of finished products afterwards.
Third, PVC arch extrusion foam board thickness, net weight and density detection
In addition to the appearance of the product to carry out checks, but also to its thickness, net weight and relative density to carry out checks, in its thickness to carry out checks to carry out the vernier calipers to carry out cubic meters and close to the board surface, there can not be gaps, the thickness of the board to the upper and lower in proportion, thin thickness error can not be too large, need to manipulate within the effective range; in the net weight and relative density of the board to carry out checks to keep in mind the net weight and relative When checking the net weight and relative density of the plates, we should keep in mind the formula calculation of the optimal algorithm of net weight and relative density to ensure accurate information of the precise measurement data.