(A) the basic performance requirements of tarpaulin
From the various uses of tarpaulins, the general requirements that should be met are:
      (1) light weight, easy to fold, easy handling;
      (2) high strength, wear resistance, long service life;
      (3) waterproof performance and breathable performance, the side of the anti-condensing water;
      (4) acid and alkali, mildew, anti-corrosion;
      (5) good weather resistance, flame retardant, fire;
      (6) no wicking effect, there will be no wetting phenomenon.
 
      In short, as a temporary building tents on the general requirements of the tarp is: "three anti" function. Waterproof, fire (flame retardant), mildew.

(B) the main performance indicators
In the specific product design or use, to consider the following performance indicators tarpaulin.
    1, breathability: tarpaulin must consider its permeability, especially the military tents cloth, air permeability of the factors such as the end of cloth tissue, density, materials, waterproof finishing agent type, resin adhesion and so on. With the increase in resin adhesion, the permeability of the tarpaulin decreased.

    2, the tensile strength: tarpaulins in the use of all the tension to bear, such as the tension when the tension to be tension; use the process to be wind, rain, the province and other additional force role. Despite these external forces, they are still required to maintain the original shape, not easily deformed, which requires the tarpaulin has a high tensile strength, and should not have too much latitude and longitude to the tensile strength difference. Especially as inflatable building with a large tent tension strength is extremely important. Generally its base fabric with high-strength polyester, vinylon and other long fiber fabric by the vinyl chloride resin, chlorosulfonylated polyethylene resin waterproof finishing. The strength of the product is mainly determined by the strength of the fibrous material and the density of the fabric.
The same time as the above-
     3, elongated skin and dimensional stability: as the roof canopy and large tents, is often used under tension. Fabric elongation should not be too large, the dimensional stability of the material is determined by the creep characteristics.
The same time as the above-
     4, tear strength: tarpaulins mainly caused by tearing, tear strength is an important indicator of tarpaulin. Tear strength is related to whether the tarpaulin will rupture due to the effect of flying objects or for some reason after the formation of holes to the surrounding expansion, the formation of large structures crack. So when the tension is big. Both require a high tensile strength of the canopy cloth, but also requires it to have a high tear strength.
The same time as the above-
     5, water resistance: water resistance is an important feature of the tarpaulin, through the impregnation finishing, the vinyl chloride filled with fabric in the gap between the fabric to form a coating. If the amount of resin adhesion per unit area over a certain degree, water resistance is not a problem. If the coating is thin, by bending, soft rub or surface wear, the coating is easy to break, it may cause muddy water.
     6, flame retardant: from the use of the safety of the mountain, the tarpaulin has a good flame retardant. Flame retardancy can be obtained by selecting flame retardant fibers and flame retardant base cloth, or by adding flame retardant to the coating agent. The addition of flame retardants has a direct relationship with the flame retardant effect.
     In addition, in addition to the above several performance requirements, but also requires excellent cold resistance, heat resistance, canopy cloth, creep resistance, anti-fatigue, wear resistance and bending resistance and so on. Therefore, Ampang hope that every customer needs on the tents, be sure to clear their own use needs, must be polished in the purchase of eyes, shop around, choose to provide high-quality tarpaulins manufacturers.