Polypropylene (PP plastic) is the second development after another fine nylon resin varieties that it is a high density, no side chain, must be of high crystalline linear polymer with excellent overall performance. Translucent white when not colored, waxy; lighter than polyethylene. Transparency is also good over polyethylene, rigid than polyethylene.
1 crystal material, moisture absorption, prone to melt fracture, long-term contact with hot metal and easily decomposed.
(2) liquidity is good, but a large contraction of the range and shrinkage, prone to shrinkage. Dented, deformed.
3 cooling speed, pouring and cooling system, cooling system should be slow, and pay attention to control the molding temperature expected lower direction of the direction of apparent temperature low temperature is particularly evident when high-pressure, mold temperature is below 50 degrees, the plastic is not smooth, easy to produce poor welding, traces of 90 degrees prone to warpage
4 plastic wall thickness to be uniform to avoid the lack of plastic, sharp corners to prevent stress concentration.
Easy to break down under certain conditions
Common products: pots, barrels, furniture, film, woven bags, caps, bumpers, etc.
Also includes a small amount of polypropylene and ethylene propylene copolymer included. PP pellets for the character, cylindrical-shaped particles that smooth, particle size in any direction for the 2mm ~ 5mm, odorless non-toxic, no mechanical impurities. This product is of high purity Plastic extrusion machinery main raw material, ethylene as comonomer, the use of highly active catalyst in 62 ℃ ~ 80 ℃ and less than 4.0MPa pressure response to the production of polypropylene powder by gas, after drying, mixing, extrusion, granulation, screening, are into polypropylene particles. Density of 0.90 g/cm3 ~ 0.91g/cm3, GE Plastics is the lightest one. Polypropylene resin has excellent mechanical properties and heat resistance, temperature range -30 ℃ ~ 140 ℃. Also has excellent electrical insulation properties and chemical stability, almost non-absorbent, and the vast majority of chemical exposure does not play a role. This product is corrosion resistant, tensile strength of 30MPa, strength, rigidity and transparency better than polyethylene; drawback is poor low-temperature impact resistance, easier to aging, but can be modified, respectively, and by adding antioxidants to be overcome. And fuming sulfuric acid, fuming nitric acid, chromic acid solution, halogen, benzene, carbon tetrachloride, chloroform and other contact with corrosion. Can be used as engineering plastics for manufacturing television sets, radios shell, electrical insulation, anti-corrosion pipes, plates, tanks, etc., but also for the production of flat yarn, fibers, packaging films.
Monthly Archives: June 2011
Production process of plastic granules
Recycled plastic granules are mainly based on the use of different raw materials and processing out of the plastic particles to distinguish between the characteristics of levels, generally divided into one, two, three materials.
A material:
Refers to the raw materials used for scrap without landing, or as the next corner material, some outlet material, plastic materials such as head, the quality is good, is not used in the processing of new materials process, the remaining little corner, or low quality raw materials. To these particles out of the wool processing, transparency is better, its quality can be compared with the new material, it is a material or a super material.
Two materials:
Is the raw material has been used once, but except for high grain, high use of imported grain in the large majority of imports large film industry if it is without wind and sun, so the quality is very good, processing particles out of the transparency is good, then it should according to the brightness and the particle surface is rough to judge.
Three materials:
Is the raw material has been used twice or more times, processing out of the particles, their elasticity, toughness and other aspects are not very good.
Plastic Crusher – plastic pellet production process
1, polystyrene foam insulation brick particles
2, lightweight foam mixed soil particles and production methods
3, production of poured plastic ball filled with granules of the way the bow
4, the plastic particles preheater
5, for continuous crystal plastic particles method and apparatus
6, waste plastic particles floc CA manufacturing methods and special drawing machine
7, low-dust granules of plastic additives
8, used to make plastics, paint and building materials colored inorganic pigment particles and their production methods
9, the material or soil particles deposited in landfills in the start position above the surface, or other devices 10 on the plastic film, plastic granules fused filter
11, the tool used for cutting plastic film method of making particles
12, auxiliary plastic processing granular preparation method
13, plastic tube with a seat cushion particles
14, inner plastic tube with a seat cushion particles
15, laminated with foam filler particles of clothing for
16, waste plastic particles flotation device
17, particles of plastic desiccant drying system
18, preparation of colored plastic or colored polymer particles approach
19, for the production of soluble plastic colorant particles preparation method
20, spherical particles prepared by the plastic melt
21, based on the lactam in the production of colored pigments and colored particles of plastic or polymer application
22, colored plastic or polymer production method of colored particles
23, cylindrical plastic compound additive particles, production process and its application
24, waste plastic particles and thermal decomposition method of manufacturing methods
25, colored plastics or polymeric dye particles prepared
26, azo dyes, their preparation and their production of colored plastic or colored polymer particles and hydrophobic fiber materials dyed or printed application
27, pyridone dyes and their preparation methods, colored in colored plastic or polymer particles prepared by the use of 28, pyridone dyes, their preparation methods and in the preparation of colored plastic or polymer uses 29 pigment particles to form foam particles with a thermoplastic resin container coating compositions
30, for plastic materials, particle adsorption dryer
31, particles of plastic processing method of preparation of antioxidant
32, inorganic filler particles with a plastic material production of new technologies
33, sterilization of plastic granules and processing methods
34, the use of plastic granules manufactured high porosity porous aluminum through-hole method and device
35, the use of nanoparticles to form thermoplastic foam to control the foam morphology methods
36, spherical particles prepared by the plastic melt
37, embedded micro-particle markers in plastic packaging
38, for particles of plastic castings rotary tool
39, the plastic conductive particles and their preparation methods
40, plastic particle material filled container and method of unloading and air transport
41, plastic particles have adhesion tendency, especially in the crystallization of PET and PU particles method and device
42, a long-fiber reinforced plastic particles rolling plant
43, particles of waste plastic recycling machine
Plastic pipe of its superior performance, health, environmental protection, low power consumption
Plastic pipe as an important component of chemical building materials, with its superior performance, health, environmental protection, low power consumption for the majority of users and other widely accepted, mainly UPVC pipes, UPVC pipe, aluminum plastic composite pipe, polyethylene (PE) These types of water pipes
China Plastic Crusher high-tech composite made of chemical building materials, chemical building materials is the second of steel, wood, cement, after the fourth largest category of emerging new contemporary building materials. In recent years, has made considerable progress in chemical building materials rapid development of new environmentally friendly plastic pipe, especially the widespread use, setting off a revolution in sound alternative to traditional building materials. Plastic pipe for a water loss, energy, materials, ecological protection, completion of the advantages of convenience, now widely used in building water supply and drainage, urban water supply and drainage and gas pipes and other fields, into a new century, the main force of urban construction pipeline.
Plastics and traditional materials with different, faster pace of technological progress, continuous emergence of new technologies, new materials, new technology makes plastic pipe relative advantages of traditional materials more and more prominent. Plastic pipe with traditional metal pipes and cement pipes, compared with a light weight, typically only the metal tube 1/6-1/10, better corrosion resistance, impact resistance and tensile strength than the inner surface of plastic pipe Smooth multi-cast iron pipe, the friction coefficient is small, fluid resistance, can reduce water consumption more than 5%, integrated energy is good, the right 75% reduction in manufacturing energy consumption, easy to transport, easy installation, long service life of 30-50 years . Polyethylene pipe past 10 years has developed very rapidly in the world, developed countries in the field of water supply areas and application of polyethylene pipe gas accounts for the absolute advantage.