Probably the tarpaulin is defined as a relatively thick fabric of cotton or linen fabric. Tarpaulin was originally named for the sails, the general use of plain weave, a small amount of twill weave, yarn were used multiple strands of thread, such as textiles and.
Usually in a tarpaulin material generally divided into coarse and fine tarpaulin tarpaulin two categories.
1, coarse cloth, also known as tarpaulin, fabric fast folding, has a good waterproof performance, automobile transportation and open-air warehouse for cover and field tents;
2 and a fine tarpaulin yarn for making labor protection clothing and supplies, the dyeing also available for shoes, travel bag, backpack, etc. fabric.
In addition, there are rubber tarpaulin, fire prevention, radiation shielding tarpaulin, tarpaulin for paper making machine.
Tarpaulin with rain, heat, cold and other role, waterproof and breathable performance is good, side of the anti condensation water; acid and alkali resistant, anti - mildew, anti - corrosion; good weather resistant performance, flame retardant,; high strength, wear-resistant, long life is tarpaulin has the advantages.
Now on the market by the sale of tarpaulin which features?
1, permeability: tarpaulin must consider the permeability, especially military tent cloth, ventilation of the influence factor of batt on base organization, density, materials, waterproof finishing agent type, resin adhesion amounts etc.. With the increase of the amount of resin adhesion, air permeability decreased tarpaulin. Of course, this is related to the finishing agent used. General with a breathable most of the tents of the short rape dimension of paraffin wax or acrylonitrile resin finishing of cotton, polyvinyl alcohol, paint, such as Kevlar fabric products.
2, tensile strength: tarpaulin when in use to withstand all kinds of tension, such as fixed tension to be subjected to tension: to use by the wind and rain, province and other additional force role. Despite these forces. It still requires that they maintain the original shape, not easy to deformation, which requires tarpaulin has higher tensile strength, and should not be too much latitude to tensile strength difference. Especially as a large inflatable tent building with tensile strength is very important. Generally the bottom cloth with high tenacity polyester, polyvinyl alcohol isometric fiber fabric by vinyl chloride resin, chlorine, sulfur acid polyethylene resin waterproof finishing. Was. The strength of the product is mainly determined by the strength of the fiber material and the density of the fabric.
3, elongation of leather and dimensional stability: as a roof tent and large tent is often used under tension. Fabric elongation shoulds not be too big, the dimensional stability is determined by the creep property of materials.
4, tear strength: tarpaulin damaged mainly by tear caused by, so the tearing strength is an important index of tarpaulin. Tear strength is related to the tarpaulin is for flying objects rupture or due to some reason in the formation of holes in the extended to the surrounding, the formation of large structure, crack. So, when the tension is large. Both the awning cloth has high tensile strength, but also requires high tear strength.
5, water resistance, water resistance is an important characteristic of tarpaulin, sorting through the impregnation, the vinyl chloride tree fat is filled in the gap of fabric weave, forming a coating film. If the unit area of resin adhesion more than a certain degree or above, water resistance is not a problem. If the film is thinner, by bending, soft or surface wear, the film is easy to rupture, it may cause mud.
6, flame retardant: from the mountain use safety, good flame retardancy requirements tarpaulin. Flame retardant can be obtained through the use of flame retardant fiber and flame retardant fabric. Also by adding flame retardant to the coating agent. There is a direct relationship between the amount of flame retardant and the effect of flame retardant.