PVC is widely used in building materials industry, has the following two aspects are essential:
A, PVC has unique properties: waterproof, fire-resistant, anti-static, easy molding.
B, PVC also has a low input and high output characteristics.
PVC foam board production process is very strict
PVC foam board of production technology is not special complex, General of line General by rolling machine, and press, and back James machine and cutting machine composition, main is by rolling machine of direct dynamic mixing, roll axis rotating and high temperature rolling production out thickness only for 0.3 mm to 0.7mm of film, production of while and by press in film of positive printing Shang suit, by back James machine in film of back attached a layer back James. Back coating is an essential part of this layer cannot be ignored. Back coating made of special material composition, is a high affinity agent, it is because of this layer back coating, PVC film to hold in and key board or other plates fused together, no crack in ten years, or even 15 years. Common veneer coating in the biggest problem is the film shedding problems cannot be resolved. Car battery as is the entire production process under high temperature (roll the internal temperature reaches 220 degrees), which makes PVC film with high light resistance and fire resistance, guarantee the high quality of PVC film. Of course, this very high demands on production machines, typically a production line production equipment cost of about 39 million mark, equivalent to about $ 160 million. But on the other hand, production of PVC membrane process is fairly simple, machine production is also very large, full, PVC is actually a low-input, high-output products.
PVC with extraordinary performance
PVC film is different from normal paste film is that: normal paste the membrane is at room temperature with glue stick directly on the surface of the plate, so after a year or two, foil is easy to fall off. And application of PVC membrane is special-purpose vacuum membrane pressing machine at 110 degrees under high temperature and pressure to the plate surface, therefore not easy to fall off.
