How to pack glass products at the lowest cost

Pearl cotton is not polystyrene, is "polyethylene". Also called EPE. EPE EPE also known as pearl cotton. Polyethylene foam cotton is non-crosslinked closed-cell structure, is a new environmentally friendly packaging materials. It consists of low-density polyethylene resin by physical foaming to produce countless independent air bubbles. Overcome the ordinary styrofoam fragile, deformation, poor responsiveness shortcomings. It has many advantages such as waterproof and moisture-proof, shockproof, sound insulation, heat preservation, good plasticity, strong toughness, recycling, environmental protection, strong resistance to collision, etc. It also has very good chemical resistance. It is an ideal substitute for traditional packaging materials. Widely used in electronic and electrical appliances, instruments, computers, audio, medical equipment, industrial control chassis, lighting, handicrafts, glass, ceramics, home appliances, spraying, furniture, alcohol and gift packaging, hardware, toys, fruits and vegetables, shoes, the inner packaging, daily necessities, and other products packaging. After adding anti-static agent and flame retardant, it shows its excellent performance. EPE pearl cotton is also used in a large number of handbags and bags of elastic lining, industrial production of sound insulation, heat insulation materials, agricultural thermal insulation materials, aquaculture, aquaculture floatation equipment, protective pads for sporting goods, water operations life-saving equipment, families, hotels, flooring decoration, liner and so on. Its tubes are used in a large number of air conditioners, strollers, children's toys, home furnishings and other industries. EPE and all kinds of fabric bonded products are good interior decoration materials for all kinds of vehicles and rooms. EPE and aluminum foil or aluminized film composite products have excellent anti-infrared ultraviolet ability, is some chemical equipment, cold storage and camping equipment car sunshade substitute. /view/686111.htm Chemical Properties: Polyethylene Polyethylene is the simplest polymer structure, but also the most widely used polymer materials. It is formed by linking repeating -CH2- units. Polyethylene is produced by the addition polymerization of ethylene (CH2=CH2). The properties of polyethylene depend on how it is polymerized. High-density polyethylene (HDPE) is produced by Ziegler-Natta polymerization under moderate pressure (15-30 atm), catalyzed by organic compounds. Polyethylene molecules polymerized under these conditions are linear and have long molecular chains with molecular weights in the hundreds of thousands. If polymerized under high pressure (100-300MPa), high temperature (190-210°C), and peroxide-catalyzed free radical polymerization, low-density polyethylene (LDPE) is produced, which has a branched structure. Polymerization pressure: high pressure, medium pressure, low pressure; Polymerization implementation methods: slurry method, solution method, gas phase method; Product density: high density, medium density, low density, linear low density; Product molecular weight: low molecular weight, ordinary molecular weight, ultra-high molecular weight. Polyethylene characteristics Polyethylene odorless, non-toxic, feel like wax, has excellent low temperature resistance (the lowest temperature can be up to -70 ~ -100 ℃), good chemical stability, can withstand most of the acid and alkali erosion (not resistant to oxidizing properties of the acid), insoluble in general solvents at room temperature, water absorption is small, excellent electrical insulation properties; but polyethylene for the environmental stress (chemical and mechanical effects) is very sensitive to the heat resistance. However, polyethylene is very sensitive to environmental stress (chemical and mechanical effects) and has poor heat resistance. The properties of polyethylene vary from species to species, depending mainly on the molecular structure and density. ** polymer: ethylene - propylene *** polymer (plastic), EVA, ethylene - butylene *** polymer, ethylene - other olefins (such as octene POE, cyclic olefins) *** polymer, ethylene - unsaturated ester *** polymer (EAA, EMAA, EEA, EMA, EMMA, EMAH) molecular weight of the molecular weight of up to 3,000,000-6,000,000,000 linear polyethylene It is called ultra-high molecular weight polyethylene (UHMWPE). UHMWPE is so strong that it can be used to make bulletproof vests. Main methods: Liquid-phase method (also divided into solution method and slurry method) and gas-phase method (the type of phase of the material in the reactor). In China, we mainly use the slurry method with Ziegler catalyst. Conditions and process description: purity of more than 99% of ethylene in the presence of catalyst titanium tetrachloride and monochlorodiethylaluminum, in the pressure of 0.1-0.5MPa and temperature of 65-75 ℃ gasoline polymerization to get the slurry of HDPE. The residual catalyst is destroyed by alcoholysis, neutralized, washed, and gasoline and unpolymerized ethylene are recovered, and the product is obtained by drying and granulation. Chemical name: Polyethylene English name: Polyethylene (PE for short) Specific gravity: 0.94-0.96 g/cm3 Molding shrinkage: 1.5-3.6% Molding temperature: 140-220 ℃ Features: corrosion resistance, excellent electrical insulation (especially high-frequency insulation), can be chlorinated, chemically crosslinked, irradiation cross-linking modification, can be reinforced with glass fiber. Low-pressure polyethylene has high melting point, rigidity, hardness and strength, low water absorption, good electrical properties and radiation resistance; high-pressure polyethylene has good flexibility, elongation, impact strength and permeability; ultra-high molecular weight polyethylene has high impact strength, fatigue resistance and wear resistance. Low-pressure polyethylene is suitable for making corrosion-resistant parts and insulating parts; high-pressure polyethylene is suitable for making thin

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