How to distinguish good and bad pvc coated tarpaulin?

The method for identifying the quality of pvc tarpaulin is believed to be well-known to many friends who work in transportation and freight yards, such as PVC coated plastic cloth and PVC waterproof tarpaulin, because this is a necessary covering equipment in the industry. Due to its ability to block wind and rain, as well as its durability, wear resistance, and environmental friendliness, canvas is widely used by logistics companies, storage terminals, factories, breeding farms, and most enterprises to cover goods. In recent years, PVC coated fabric has been widely used for car awnings, ship covers, freight yard covers, train covers, construction site covers, crop covers, machine covers, camping tents, and more, with a wide range of applications.
PVC plastic coating is an excellent product of tarpaulin, which has excellent mildew resistance, obvious waterproof property, more waterproof than other canvas, good low softness, high strength, strong tension, corrosion resistance, aging resistance, relatively light and other characteristics; Addition method: heat sealing machine, sewing machine. To determine whether a PVC coated fabric is good or bad, the main points to focus on are:
1. Appearance. Excellent PVC coating with good color and brightness; One side is flat and smooth, and there are some granular objects on the other side, indicating that the resin composition is added appropriately and the temperature is appropriate; No pinholes, high resin density, good aging resistance and long service life.
2. Tension. According to the different processes, canvas is carefully proportioned and well proportioned in terms of material ratio, which reduces the damage to the fabric and improves the tensile strength; The warp and weft density of yarn is high, and the tension is good.
3. Waterproof performance. The waterproof performance is good, the adhesive is good, and the canvas will not have pinholes, indicating that the production materials are very good. In terms of material addition, there are many resin components, high density, and good waterproof performance.
4. Hand feel. It feels very soft to the touch, although it feels average in thickness, it actually meets the requirements. However, due to the high resin composition and good processing techniques, it feels very soft to the touch and does not feel rough.
5. Production process. PVC coated fabric is produced using a vertical machine, which is mechanically produced by pulling the fabric straight into the raw material box and pulling it out. The adhesive material on the tarpaulin is high purity PVC material, and then both sides are straightened and scraped with a knife. After scraping with a knife, it is dried by a dryer, cut edges, divide circles, and packaged. There are two types of dryers, one is using electric heating and the other is using a boiler. Vertical machines have high requirements for raw materials and must have a certain degree of purity. PVC canvas produced by vertical machines is often slightly more expensive, and the purity of canvas products is also high.
6. Environmental performance. PVC plastic coating takes polyester filament as the base cloth, and the exterior is PVC double-sided coating. With excellent environmental protection resins selected, the surface is smooth and clean, and the color is bright. It has the properties of waterproof, fire prevention, corrosion prevention, mold resistance, cold resistance, high temperature resistance, UV resistance, aging resistance, etc.
By mastering these various aspects, you will basically have a certain selection perspective, and you can judge the quality at a glance.