PP market depression, may be related to the market woven bag loose season, low demand, low turnover. Of course, with the reduction of crude oil price and the unstable mentality of some markets, the PP market price is slightly lower, but the overall price has little change and little influence. PP market trading up space is limited, if there is no special case, the market will maintain a long-term stable state. Plastic woven bags have the characteristics of light weight, good electrical insulation, good corrosion resistance and easy processing. Plastic woven bag has the general characteristics of PP and its own characteristics. As follows:

　1, qualitative light

　PP is generally light, with a density of about 0.0-9 PP woven bags. 98 grams per cubic centimeter. The commonly used plastic woven fabric, if not packed, equals the density of the plastic. The density of plastics used in plastic weaving is 0.0-9. 91 grams per cubic centimeter. Knitting is usually lighter than water.

　2. High fracture strength

　The plastic woven fabric in plastics is a flexible material with high fracture strength. This kind of material and its molecular structure, crystallinity, drawing orientation, etc. are also related to the type of additive. If the strength is measured (strength/share), the plastic woven fabric is higher than or close to the metal material.

　3. Good chemical resistance

　Plastic woven fabric for inorganic and organic compounds has good corrosion resistance, under 110 ℃, long time free from solvent, grease, etc. It has strong chemical stability. When the temperature rises, carbon tetrachloride, xylene, turpentine and other soluble. Fuming nitric acid, fuming sulfuric acid, halogens, and other strong oxides oxidize it.

　4. Good wear resistance

　The friction coefficient between pure plastic woven cloth is very small, only 0. 12, similar to nylon, to a certain extent, the friction between plastic woven cloth and its goods, with lubricity.

　5. Good electrical insulation

　Pure plastic woven fabric is an excellent electrical insulator. Because it does not absorb water and is not affected by water in the air, the breakdown voltage is also high, with a dielectric constant of 2.2-2. 6. Its high volume resistance and good insulation of plastic fabric does not mean that it is used as insulation material.

　6. Environmental resistance

　At room temperature, plastic woven fabrics are almost impermeable to moisture and have a water absorption rate of less than 0 in 24 hours. At 01%, water and gas permeability is very low, becoming brittle and brittle at low temperatures. Plastic woven fabrics do not mould.

　7. Poor anti-aging ability

　The anti-aging ability of plastic woven bag is poor, especially PP woven bag is lower than polyethylene woven bag. Its aging problem is mainly heat and itching aging, photodegradation. The poor anti-aging ability of plastic woven fabric is one of the main defects, which affects the service life and application field of woven bags.