The Important Reasons Why PVC Is Widely Used In The Building Materials Industry
Common PVC products: plates, pipes, shoe soles, toys, doors and windows, wire sheaths, stationery, etc. It is a polymer material that uses a chlorine atom to replace a hydrogen atom in polyethylene.
So why can it be widely used in the building materials industry?
One is the unique properties of PVC (rainproof, fire-resistant, anti-static, easy to form), and the other is the characteristics of low input and high output of PVC. So, why does PVC have the above two advantages? Let us find the answer from its production process.
The production process of PVC is not complicated. The ordinary production line is generally composed of a rolling machine, a printing machine, a back coater and a cutting machine. Films of 0.3 mm to 0.7 mm are produced at the same time and are printed on the front side of the film by a printing machine, and a back coat is attached to the back side of the film by a back coater. But don't underestimate this layer of back coating, it is an important guarantee for the high-quality performance of PVC film. The back coating is composed of special materials and is a high-energy affinity agent. It is precisely because of this back coating that the PVC film can be tightly integrated with the MDF or other boards, and it will not be glued for ten or even fifteen years. The biggest problem of ordinary veneer is that it cannot solve the problem of film falling off. Since the whole production process is carried out at high temperature (the temperature in the rolling machine reaches 220 degrees), this makes the PVC film have high light resistance and fire resistance, ensuring the high quality of the PVC film. Of course, this requires very high production machines. Usually, the cost of production equipment for a production line is about 39 million marks, equivalent to about 160 million yuan. On the other hand, the production process of PVC film is quite simple, and the output of the machine is also large. Therefore, from a comprehensive perspective, PVC is actually a low-input, high-yield product.
