Plastic woven bags are often used to carry supplies, its common characteristics are as follows:
1. Light weight. This is a very important feature, according to professional testing, the density of plastic woven fabric is about 0.9-0.98 grams/cubic centimeter, the commonly used woven bag material is polypropylene, assuming that the plastic woven bag does not increase the filler, then its density is equivalent to the density of polypropylene. The density of polypropylene is 0.9-0.91 g/cm ³.
2. High cracking strength. Plastic woven bag material is a material with high flexible cracking strength, which is related to its molecular structure, crystallization degree, drafting orientation, etc., and also related to the variety of additives, if the specific strength is used to measure plastic woven bags, it is higher than or close to metal materials
3. Good wear resistance. The conflict coefficient between pure polypropylene plastic woven fabrics is small, only about 0.12, similar to nylon, to some extent, the conflict between plastic woven fabrics and its items has a lubricating effect.
4. Good chemical resistance. Plastic woven bags have excellent corrosion resistance, and in the general environment, woven bags can be stored for a long time. When the temperature rises, carbon tetrachloride, xylene, turpentine, etc., it can swell, fuming nitric acid, fuming sulfuric acid, halogen elements and other strong oxides will oxidize it, and it has good corrosion resistance to strong alkali and general acids.
5. Good electrical insulation. Pure polypropylene fabric is an excellent electrical insulator. Because it does not absorb moisture and is not affected by moisture in the air, the breakdown voltage is also high, and the dielectric constant is 2.2-2.6, although the insulation of the plastic woven fabric is good, this does not mean that it can be used as an insulating material, in fact, the woven bag is not completely insulated.
6. Environmental resistance. At room temperature, the root of the plastic woven bag is not subject to water corrosion, according to the measurement data flash, its water absorption rate within 24 hours is less than 0.01%, and water penetration is also very low. However, at low temperatures, the woven bag is simply cracked because it becomes brittle, so we should pay attention to room temperature when storing the woven bag, but it will not become mildew.
