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FAQ

What are the criteria for the classification of plastic materials at injection molding and extrusion?
In comparison, the lower melt flow rate is applicable to the extrusion grade, and the higher is applicable to the injection molding grade. As to what is low and what is high, there is a difference between the different plastic varieties.
What are the raw materials for producing plastic bowls and cups?
PP, the Chinese name is polypropylene. It is a fine kind of resin developed after nylon. It is a kind of linear polymer with high density, no side chain and high crystallinity. It has excellent comprehensive properties. Not colored, white, translucent, waxy, lighter than polyethylene. Transparency is also better than polyethylene, more rigid than polyethylene.
PE plastic bellows raw material formula (PE and PP ratio, as well as other filling)?
PP and PE plastic corrugated pipe in the role of the following two: 1, PP material can reduce the production of pipe, HDPE than PP pipe grade market sales price higher, the production of HDPE pipeline adding appropriate amount of PP, for the reduction of raw materials
What plastic material is used for plastic hose?
PVC: the main ingredients of PVC, bright color, corrosion resistant, durable, due to an increase in the manufacturing process of plasticizer, anti aging agent and other toxic and auxiliary materials to enhance its heat resistance, toughness, ductility, so their products generally do not store food and drug. If there is special physical property requirements, you can also increase the amount of modifier. It must not add a plasticizer has good tensile and compressive strength, but its flexibility is better than other plastic pipe, excellent corrosion resistance, the cheapest price in all kinds of plastic pipe, but low temperature brittle adhesive, rubber ring socket flange connection, threaded connection for residential living, industrial and mining industry and agriculture for drainage, irrigation, gas supply, exhaust pipe, wire pipe, rain water pipe, industrial anti-corrosion pipe etc.. The heat resistant property is outstanding, the thermal deformation temperature is 100 DEG C, the chemical resistance is excellent, and the connecting flange screw thread is connected with the hot water pipe
What does MFI mean in PC material?
The measurement of MI is usually based on the standard method of ASTM D1238. It is the principle of the plastic or resin into the metal sleeve of a fixed inner diameter, and heating the plastic or resin after melting, and then give some load on the piston, the piston on the weight of the molten plastic has been squeezed out from a small hole in the charge, and calculate the weight and squeezed out of plastic. This measuring method, because of the same material, the sleeve barrel inner diameter, load, and temperature are fixed, so in addition to test MI, can also be used for the determination of density, viscosity, and melt shear rate, shear stress... etc.
What do you mean by grade 1, class two or class three in plastic?
Three grade material refers to the raw material has been used two times or more times, the processing of particles, and its elasticity, toughness and other aspects are not very good.
What raw material produces the plastic to the human body not to harm, to the environment does not have the pollution?
Starch plastics containing starch in more than 90%, add other components also can be completely degraded, there are Japan Sumitomo Business Corporation, American Wamer-Lamber company, Italy Ferrizz company claims of success starchier in 90% to 100% of full starch plastics, in (January ~ 1) completely biodegradable without leaving any trace, no pollution, can be used in the manufacture of various containers, bottles, films and garbage bags etc. all starch plastics production principle is that the starch molecular allostent anddisorderly change formed with thermoplastic starch resin, also known as the thermoplastic starch plastics. The molding process can be used in traditional plastic processing equipment. With starch as the potential advantages of development of bio degradable plastics raw materials: starch has biodegradability completely in various environments; plastic in the degradation of starch molecules or after ashing, the formation of two oxygen Carbon gas, without soil or air poison; take appropriate technology to make starch thermoplastic after mechanical properties can reach for manufacturing plastic material; starch is a renewable resource, inexhaustible, pioneering starch utilization is conducive to rural economic development. That is, starch plastics production in China of vast the majority of starch filled plastics, is added in a certain proportion of polymer materials in non biodegradable starch, resulting in the collapse of material physical property through biodegradation of starch, prompted a large number of end groups that exposed to oxidative degradation, but the rest of the "collapse" after the PE, PVC and so on are not always possible degradation the residue in soil, of course, days and months multiplying will cause pollution, so the foreign ownership for such products will be eliminated.
How many kinds of plastic do you have?
A. reinforced plastic:Plastic material can be divided into granular (such as calcium plastic reinforced plastic), fiber (such as glass fiber or glass cloth reinforced plastic), sheet (such as mica reinforced plastic) three. According to the material can be divided into cloth reinforced plastic (such as rags or reinforced asbestos reinforced plastics), inorganic mineral filled plastics (such as quartz or mica filled plastics), fiber reinforced plastics (such as carbon fiber reinforced plastics) three