using two component spray foam

Rigid foam polyurethane spray foam and composite -site prefabricated both methods. Spray foam spray when using two components in the confluence , immediately reacted polyurethane foam , this method can be used for a lot of foam . Not suitable foam case of composite panels can be prefabricated , the gap between the plates can be filled with foam foam gun , the effect is also very good. Biaxial stretching refers to a specific heat, the PVC sheets in two directions perpendicular to each other at 100 % elongation , the PVC sheet molecular chain has been re- ordered arrangement ,Concrete mixing plants molecular cohesion increasing significantly improved the plate a variety of physical and mechanical properties. In the stretch before the first UV layer co-extruded with PVC layer , precast concrete plant oriented process, which ensures UV protection layer uniform, dense coverage of the surface of the plate , but also fully integrated with PVC layer . This process overcomes the ordinary polyvinyl chloride sheet strength and durability in areas of weakness , became high quality materials.