1. Canvas: Canvas is a thicker cotton fabric or linen fabric, usually divided into two categories: thick canvas and fine canvas. Coarse canvas is also called tarpaulin. The fabric is strong and resistant to folding and has good waterproof performance. It is used for automobile transportation and open-air warehouse cover and tents in the field. 2. PE cloth: The raw material of PE tarpaulin generally refers to colored striped cloth, which is coated with PE film on both sides of PE woven cloth, or polypropylene woven cloth. This kind of tarpaulin has poor waterproof performance, and it is generally difficult to guarantee the waterproof performance after one use. The disadvantage is that it is easy to wear, and the advantage is that it is light in weight, clean and pollution-free. 3. PVC tarpaulin: it is a polyester filament base fabric and double-sided coated with PVC paste resin. Because it is a dipping process, one-time molding, there is a PVC slurry in the gap of the cloth, so the waterproof performance is good. Rainproof articles such as cloth, storage yard, etc. are all made of PVC tarpaulin. PVC material has good rain resistance, PVC has good durability, and the anti-aging resistance of pvc tarpaulin is much better than that of PP and PE tarpaulin. Application and device form: According to the purpose of tarpaulin, tarpaulin is mainly used for transportation and covering on trucks and cars. Transportation: Although the tarp is not the main accessory of the car, as an important accessory, if it can be used correctly, it can save money, and it is directly related to the quality of the transported goods. There are generally four forms of tarpaulin installations: square, arc, triangle and flat. 1. Square shape: Generally, truck manufacturers use this form, and its advantage is that the volume of the carriage is large and flat. The disadvantage is that the drainage conditions are poor, and the top is easy to form a groove or concave shape and water accumulates. If the quality of the tarp is poor, water will easily penetrate into the carriage, causing the material to become damp and deteriorate. At the same time, due to the accumulation of water, the corrosion of the tarp will be accelerated, and the corners and corners produced by the square shape will easily scratch the tarp when driving in mountainous areas. 2. Arc shape: It absorbs the advantages of triangles and squares, overcomes and avoids the shortcomings of triangles and squares to a certain extent, and because the current domestic transportation environment is greatly improved, the current domestic trucks generally use this type of shape. 3. Triangle: Generally, only the transportation companies in the plateau and mountainous areas use it. The advantages are good drainage conditions, no accumulation of water, and it is not easy to touch the mountain and scratch the tarpaulin. The disadvantage is that the volume is small, it is not easy to transport light foam goods, and the tarpaulin is easy to contact with the substance. For example, the tarp can easily cause the substance to deteriorate. 4. Flat-laying: Since the truck itself is not equipped with tarpaulin rails, it is mostly a slatted carriage. During transportation, it is necessary to cover the goods and spread the tarp directly on the truck carriage to prevent the goods from being spilled and protected from wind and rain.
