Shanghai Daoqin Plastics Co., Ltd.

         polypropylene (PP) and polyethylene (PE) difference is what?

         polyethylene (PE)  PE

        未 color 时呈乳 white semi transparent, wax 状; use products has slip 腻 感觉, tough;稍 can long. generally low density polyethylene (PE) relatively soft, transparent degree relatively good; high density polyethylene (PE) relatively hard.

         Common products: bag, water tube/pipe, 油桶, material bottle (钙奶 bottle), day commonly used product and other.

         polypropylene (PP)  PP

        未 color white semi transparent, wax 状; ratio polyethylene (PE) light. transparent degree relatively polyethylene (PE) good, ratio polyethylene (PE) rigid hard.

         Common products: 盆, 桶, furniture, film, woven bag, bottle cover/cap, automotive 保险杠 and other.

         polystyrene (PS) PS

         in color transparent. products or 敲打, has metal 似 清脆声, gloss and transparent very good, similar 于玻璃, property easy fracture, use 手指甲 can in products surface 划出痕迹. modified polystyrene (PS) is transparent.

         Common products: tool, 杯子, food container, home appliances outer housing/shell, electrical parts and other.

         polyvinyl chloride (PVC) PVC

         natural color is micro color semi transparent 状, has gloss. transparent degree polyethylene (PE), poly 苯烯, polystyrene (PS), additives use amount different, separation is soft, hard polyvinyl chloride (PVC), soft products tough, viscous, hard products hardness high low density polyethylene (PE), low polypropylene (PP), in 屈折处会出现 whitening phenomenon.

         Common products: sheet/plate 材, pipe/tube, shoe sole, toys, 门窗, electrical outer 皮, tool and other.

         polyethylene terephthalate (PET)  PET

         transparent degree very good, strong/high degree and tough property excellent polystyrene (PS) and polyvinyl chloride (PVC), easy 破碎.

         Common products: is bottle type products can 乐, water bottle and other.

         polyethylene (PE) waste material

         polyethylene (PE) is plastics in output/production volume most large, applications thermoplastic property plastics, it is ethylene polymerization formed, is separation crystallization material, can use generally thermoplastic property plastics molding methods processing. polyethylene (PE) can separation is high density polyethylene (PE), low density polyethylene (PE) and type low density polyethylene (PE) large type.

         high density polyethylene (PE) density generally high 于0.94g/,而 low density polyethylene (PE) and type low density polyethylene (PE) density in 0.91～0.94g/cm between. waste polyethylene (PE) film main/primary has 两方面:

        1. film production in generate material, product and other. this waste material 清洁, product types 明确, can powder pressure shrink rear 直接送入 extrusion machine pelletizing, recycling process relatively simple.

        2. chemical industrial, electrical industrial, food and product industrial and other waste film. this waste film already by 污染, has already color has 商标, has also has 砂子, or and other 杂质.

         polyethylene (PE) due to easy, molding 方便, therefore its products application scope very 广, use most more also is packaging products, in 60% above. high density polyethylene (PE) main/primary used for packaging use film and bottle type, in container upper; low density polyethylene (PE) most main/primary applications is packaging use film and use film;线 type low density polyethylene (PE) main/primary used for film, film parts, pipe/tube and electrical cable upper.

         polyvinyl chloride (PVC) waste material

         polyvinyl chloride (PVC) history upper is use amount most large plastics, in certain field/area upper by polyethylene (PE), PET 代替, still in a large amount of use, its consumption amount 仅次于 polyethylene (PE) and polypropylene (PP).

         polyvinyl chloride (PVC) products 形式十 separation 丰富, can separation is hard polyvinyl chloride (PVC), soft polyvinyl chloride (PVC), polyvinyl chloride (PVC) large type. hard polyvinyl chloride (PVC) main/primary used for pipe/tube, type 材, sheet/slice and other extrusion product, and tube/pipe 接头, electrical parts and other injection molding parts and extrusion type bottle type product, it 们约占 polyvinyl chloride (PVC) 65% above consumption. soft polyvinyl chloride (PVC) main/primary used for calendering sheet/slice, automotive inner product, bag, film, label, electrical cable, medical grade products and other. polyvinyl chloride (PVC) 糊约占 polyvinyl chloride (PVC) products 10%, main/primary use product has slush molding products and other.

         polymethyl methacrylate (PMMA) waste material

         polymethyl methacrylate (PMMA) (PMMA)俗称 has machine 玻璃. PMMA tool has other plastics has features can: good transparent degree (接近于玻璃); tough property, chemical resistance, weather resistance very good. already a large amount of used for automotive, medical devices, inner 游泳池 and other 方, automotive and other related industrial development, PMMA use amount 也越 越 large. PMMA product main/primary has type: or extrusion method made sheet/slice 材; already has modifier, material and other additives product; paint and coating material.

         polystyrene (PS) waste material polystyrene (PS) is styrene homopolymer, is types thermoplastic property general purpose plastics, output/production volume 仅次于 polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC). polystyrene (PS) application scope very 广. can large separation is below/following 四方面:

         general purpose polystyrene (PS): product a large amount of day use products and home appliances, machine, medical and other transparent products upper.

         high impact resistance polystyrene (PS): large large improve/increase its impact strong/high degree and fracture elongation, product used for electrical parts, home appliances outer housing/shell, food container and other.

         extrusion foaming polystyrene (PS) sheet/slice and its hot molding products: thick sheet/plate main/primary used for as hot, 隔音, anti material. hot molding products a large amount of used for food packaging and fast food container.

         can property polystyrene (PS) foam products: product used for electrical appliances anti packaging, construction, cold and other industry hot material.

         front type polystyrene (PS) products use lifespan long, waste thick can use recycling methods recycling, for ring pressure relatively small. rear type polystyrene (PS) products more belongs to one-time property packaging, large, consumption amount large, 如不处理而直接 waste 弃, for ring formed large pressure. 人们常说 “ white 污染” in very large separation inner is foam polystyrene (PS).

         polyethylene terephthalate (PET) waste material

         polyethylene terephthalate (PET) (PET) is for for 苯二甲 acid or 二甲基 for terephthalic acid and ethylene glycol ester polycondensation material, is types type thermoplastic property plastics. PET usually is types crystallization type plastics, in bottle, film product in, is its high degree transparent, can use process conditions make formed is type plastics.

        PET due to property can excellent 良, cost low, applications non 常广. according to its products 形式, can separation is type: polyester fiber, film, engineering injection molding parts, bottle type. PET bottle due to light 不碎, can consumption low and other advantages, substitute/replace 一 传统 packaging materials, a large amount of application in food, material, product and other field/area, especially is material bottle, PET already for advantages. material bottle is one-time property use, therefore waste amount large.

        PET bottle recycling technology in outer already to versus high water 平, USA, Germany and other recycling rate already 达80% above. not only 如此, is recycling, this also made 订 一 方 property regulations, for PET bottle waste 弃, 收集, use, design manufacturing strong/high made property 规定.

         waste plastics simple classification

         plastics, especially is thermoplastic property plastics, in combined formed, molding processing, and and other step/link generate waste material or waste products, is “ plastics waste material ”, its in large more generate 于消费 use process in, but also packaging materials, film and one-time property product waste amount most large.

         waste plastics generate:

        1. resin production in generate waste material;

        2. molding processing process in generate waste material;

        3.配 mixed and recycled processing process in generate waste material;

        4.二次 processing in generate waste material;

        5. industrial rear plastics waste material;

         this category of waste waste material 源广, use complex, must 经 处理才 can recycling again use. this category of waste material 包括:

        1) chemical industrial in use bag, and other;

        2) textile industrial in container, waste fiber filament and other;

        3) home appliances industry in packaging materials, foam anti and other;

        4) construction industry in building materials, pipe/tube and other;

        5)灌装 industrial in shrinkage film, tensile film and other;

        6) food processing in turnover box, and other;

        7)农业 in film, large film, bag and other;

        8)渔业 in 鱼网, and other;

        9)报 waste upper lower 保险杠, 燃油箱, battery and other.

        生 active rear waste plastics

         polypropylene (PP) propylene polymer 英文名称polypropylene shrink 写PP homopolymer types mono polymerization formed polymer is homopolymer. polypropylene (PP) PP未 color white semi transparent, wax 状; ratio polyethylene (PE) light. transparent degree relatively polyethylene (PE) good, ratio polyethylene (PE) rigid hard.

         Common products: 盆, 桶, furniture, film, woven bag, bottle cover/cap, automotive 保险杠 and other.

         polyethylene (PE) is ethylene most important lower product, polyethylene (PE) PE未 color 时呈乳 white semi transparent, wax 状; use products has slip 腻 感觉, tough;稍 can long. generally low density polyethylene (PE) relatively soft, transparent degree relatively good; high density polyethylene (PE) relatively hard. polyethylene (PE) (PE)占 world polyolefin amount 70%, thermoplastic property general purpose plastics amount 44%, world ethylene output/production volume 52%.

         polyethylene (PE) basic separation is large type, high pressure low density polyethylene (PE) (LDPE), high density polyethylene (PE) (HDPE) and type low density polyethylene (PE) (LLDPE). film is its main/primary processing product, its is sheet/slice and coating, bottle, 罐, and other in container and its it various injection molding and blow molding products, pipe/tube and electrical 线, cable insulation and sleeve/set and other. main/primary used for packaging, and and other 部门. and world its it versus ratio, used for film LDPE and LLDPE amount relatively more. is world upper film output/production volume most large 国家, this is 由我国农业 large features 决定.