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First of all, to understand the material of the net bag is made of what material, (the general plastic bag is PP and PE raw materials produced). Made of PE raw materials made of the net bag feel more silky, and PP raw materials made of the net bag feel more blunt; PE bag can be stretched and pp net bag is not stretched; we buy plastic bags Time must be clear that their purchase of the net bag is used to install something. So that you can avoid buying the wrong net bag.
A few days ago I just and a plastic net bag wholesalers chat found in, Mesh Bag because do not understand the simple identification of plastic bags of good or bad, Mesh Bag eat a dumb loss. How to avoid us later do not eat Yaba Kui it? The following by Baofengda plastic products to provide you with identification of poor quality plastic bags of the five methods:
Method one: look at the color of the net bag is dull;
Method two: look at the mesh bag mesh size is similar;
Method three: look at the size of mesh bag mesh is uniform;
Method 4: see the thickness of the net bag network cable is the same;
Method 5: pull a pull to see the expansion of the performance of the bag is good;
PP plastic mesh bag is a semi-crystalline material. It is harder than PE and has a higher melting point. Since the homopolymer PP temperature is higher than 0C is very brittle, so many commercial PP material is added 1 ~ 4% ethylene random copolymer or higher ratio of ethylene content of the claw-type copolymer. Copolymer PP material has a low thermal distortion temperature (100C), low transparency, Mesh Bag low gloss, low rigidity, but has a stronger impact strength. The strength of PP increases with the increase of ethylene content. PP Vicat softening temperature of 150C. Due to the high degree of crystallinity, the surface stiffness and scratch resistance of this material is very good. PP materials have excellent resistance to moisture, acid and alkali corrosion resistance, anti-solubility. However, it has no resistance to aromatic hydrocarbons (such as benzene) solvents, Mesh Bag chlorinated hydrocarbons (carbon tetrachloride) solvents and the like. So we know the pp raw materials of these physical and chemical properties after we store pp plastic bags should pay attention to what matters?
1. Store in a cool, ventilated place.
2. Keep away from fire and heat.
3. should be stored separately from the oxidant, remember to mix together to store.
4. Storage places should be equipped with the corresponding variety and quantity of fire equipment.
5. Storage area should be equipped with appropriate materials to contain leaks.