Production Process of PVC Permeable Membrane

Release time:

Aug 18,2023

The production process of PVC film is unpacking, inspection, sieving, formula-mixing → granulation → extrusion of thick film → air cooling → hot water bath boiling water heating → horizontal inflation of shaping cylinder → bubble quenching by film clamping roller → winding into heat shrinkable film. The production process of PVC is not complicated. The common production line is generally composed of a roller press, a printing machine, a back coating machine and a cutting machine. The film with a thickness of only 0.3mm to 0.7mm is mainly produced through the direct stirring of the roller press, the rotation of the roller and the high-temperature rolling. At the same time of production, the front surface of the film is printed with color by the printing machine, and a layer of back coating is attached to the back surface on the back surface of the film. Don't underestimate this layer of back coating, it is an important guarantee of PVC film performance. 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 fused with the medium-dense plate or other plates, and the glue will not be opened for ten or even fifteen years. The bigger problem of ordinary sticking mask is that it can not solve the problem of film shedding. Since the entire production process is carried out at high temperatures (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 membrane. The main component of PVC is polyvinyl chloride, which is slightly yellow translucent and shiny. Transparency is better than polyethylene and polypropylene, and worse than polystyrene. With the different dosage of additives, it is divided into soft and hard polyvinyl chloride. Soft products are soft and tough, and feel sticky. The hardness of hard products is higher than that of low density polyethylene, but lower than that of polypropylene. Whitening phenomenon will appear at the bend. Common products: plates, pipes, soles, toys, doors and windows, wire skins, stationery, etc. It is a polymer material that uses a chlorine atom to replace a hydrogen atom in polyethylene.

The production process of PVC is not complicated. The common production line is generally composed of a roller press, a printing machine, a back coating machine and a cutting machine. The film with a thickness of only 0.3mm to 0.7mm is mainly produced through the direct stirring of the roller press, the rotation of the roller and the high-temperature rolling. At the same time of production, the front surface of the film is printed with color by the printing machine, and a layer of back coating is attached to the back surface on the back surface of the film. Don't underestimate this layer of back coating, it is an important guarantee of PVC film performance. 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 fused with the medium-dense plate or other plates, and the glue will not be opened for ten or even fifteen years. The bigger problem of ordinary sticking mask is that it can not solve the problem of film shedding. Since the entire production process is carried out at high temperatures (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 membrane.

The main component of PVC is polyvinyl chloride, which is slightly yellow translucent and shiny. Transparency is better than polyethylene and polypropylene, and worse than polystyrene. With the different dosage of additives, it is divided into soft and hard polyvinyl chloride. Soft products are soft and tough, and feel sticky. The hardness of hard products is higher than that of low density polyethylene, but lower than that of polypropylene. Whitening phenomenon will appear at the bend. Common products: plates, pipes, soles, toys, doors and windows, wire skins, stationery, etc. It is a polymer material that uses a chlorine atom to replace a hydrogen atom in polyethylene.

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