1、 As for the external account, several materials are mainly selected for the tarpaulins on the market:
（1）, nylon: the scientific name is polyamide fiber. There are mainly two kinds of nylon 66 and nylon 6, which are named nylon in China, namely nylon 66 and nylon 6. Nylon has strong tension, beautiful and smooth color, not easy to fade, soft texture and excellent strength. It is a canvas cotton tent. It is not easy to mold and will not be eaten by insects. Its hygroscopicity is small. It will not soften in case of freezing. It is a widely used data now.
（2）, canvas: canvas tent factory. It has strong water resistance and good heat insulation effect. It is not hot when the sun shines, but its texture is hard and bulky, simple mildew and fading. Its economic benefit is not as good as nylon, and it has been phased out.
（3）, compare it with the canvas tent factory.
（4）, silk puff: it is a fabric blended with nylon and natural fiber (Japan Ayon), so it will have the characteristics of nylon and natural fiber in the future. The cloth surface is smooth and has good air permeability, but its durability and strength are not as good as pure nylon. See your talent. It is often used in cold climates. For example, in cold climates, the one who closes the account door must also be able to emit the water vapor in the account, so as not to be too stuffy or too humid.
2、 As for the tarpaulin part, many people are considerate that the truck tent is not waterproof, windproof and good-looking, and the internal tent is also very important for a tent. Cotton nylon fabric with excellent air permeability is usually used. From the perspective of application, the performance of nylon silk is better than that of cotton cloth. When camping in the wild, the tent is easy to absorb moisture, and the cotton cloth is easy to mildew due to poor exposure to the sun. Nylon silk is easy to dry and not easy to mold.
3、 The primary function of the tarpaulin is waterproof and moisture-proof. Dust proof. The choice of the base material determines the level of the account. High grade accounts usually use polyethylene (PE) as the base material, but also use polyvinyl chloride (PVC) for low cost. Double coated PE. Although it is waterproof. Moisture proof function, but easy to wear and leak. Winter is the bane of PVC primer. The cold weather will make it hard, brittle, and easy to crease or crack. The Oxford cloth coated with polyurethane (PU) is used as the base material: whether it is consolidation or cold resistance. The water resistance is still much higher than that of PE and pvc.pu coating, which can not only overcome the shortcomings of PVC, but also is very waterproof.