What is the difference between the raw material production process of PVC suction hose and PU suction hose
PVC suction hose, Pu suction hose is usually used for suction occasions, especially suitable for abrasive solids, household vacuum cleaners, woodworking vacuum hoses, woodworking equipment vacuum hoses, industrial discharge equipment , Dust and smoke emission, dryer, medical equipment, drying and other vacuum cleaner hoses. Such as dust powder, fiber, woodworking vacuum hose, debris and granular matter. Gaseous and liquid media, industrial dust removal and suction, industrial vacuum cleaners, paper or accumulated fiber suction. Both PVC and PU are polyvinyl chloride (a type of plastic), but the manufacturing processes of these two products are different.
In the manufacturing process of PVC, the plastic particles must be melted and stirred into a paste, uniformly coated on the T/C knitted fabric base according to the specified thickness, and then entered into the foaming furnace for foaming, so that it has It can be adapted to produce a variety of different products and different requirements of softness, and surface treatment (dying, embossing, polishing, matting, polishing, etc., mainly according to specific product requirements) at the same time as baking.
PU is more complicated in manufacturing process than PVC leather. Since the base fabric of PU is a canvas PU material with good tensile strength, it can be coated on top of the base fabric, and the base fabric can also be included in the middle. Make it impossible to observe the existence of the underclothing from outside. The physical properties of PU are better than those of PVC. It is resistant to tortuosity, softness, tensile strength, and air permeability (PVC does not). The pattern of PVC is formed by hot pressing with steel pattern rollers; the pattern of PU is pressed on the surface of semi-finished leather with a patterned paper first, and then the paper leather is separated after cooling down for surface treatment. The price of PU is more than double that of PVC leather, and the price of some special requirements of PU is 2-3 times higher than that of PVC leather. Generally, the pattern paper required by PU can only be used for 4 to 5 times, and it will be scrapped; the pattern roller has a long service life, so the cost of PU is higher than that of PVC leather.
The difference between PU and PVC is relatively easy. From the corners, the PU base fabric is much thicker than PVC, and the feel is different. PU has a softer feel; PVC has a harder feel; it can also be burned with fire. , The taste of PU is much lighter than that of PVC.