Shanghai Daoqin Plastics Co., Ltd.

automotive industrial development for plastics processing technology 提出 越 越 high requirements, automotive plastics use amount is amount 一 国家 automotive production technology water 平 标志之一. 近30 more year 以, automotive plastics use amount in increase, 平均每辆 automotive use amount from 20世纪70 year 代初 50～60kg already development to currently 150kg, but also also in increase in. currently, in and other 发达国家 in, in plastics use amount automotive weight 10％ above, inner and external decoration in, large surface parts plastics use already to saturated and degree, has separation parts plastics 化. plastics products in, 1m above product already non 常普遍, separation plastics product long degree already to 2m above. due to new material cost and processing technology 不断进步, inner outer parts achieve full plastics already non 常接近. currently, plastics in automotive in application positive in toward structural parts and semi structural parts direction expand 展, from make long glass fiber reinforced material (LFT) in automotive parts in 越 越广泛 application, for/regarding product is non combined 适 一 type material. long glass fiber reinforced material use in field/area, tool has light amount, energy saving, environmental protection and other advantages, 例如, 马自达6 type automotive front block and 车门模 block already using/adopting long glass fiber reinforced polypropylene (PP) material. 据不完 full 估计, full market year long glass fiber reinforced thermoplastic property plastics output/production volume has 12.6 10,000 tons. research 发现, is make glass fiber in plastics in very good to high strength function, must make glass fiber long degree large its long degree. fiber long degree small 于此临界 long degree fiber reinforcement material to 一定 载荷时, fiber has can can by 拔出, fiber strong/high degree can to separation 发挥. long degree large small and specific plastics product types has very large 关系, has material 标明, glass fiber reinforced polypropylene (PP) 而言, its glass fiber (GF) long degree is 3.1mm, is for/regarding chemical modified PP材 material, glass fiber (GF) long degree can to 0.9mm. is in glass fiber reinforced polypropylene (PP) in glass fiber long degree 却远远 low 于临界 long degree, formed material bad main/primary is fiber by 拨出而无 method meet/satisfy strong/high degree requirements. glass fiber reinforcement thermoplastic property plastics manufacturing process in, fiber in extrusion machine in and resin mixing/compounding 时遭受 screw and machine between force function, fiber to loss 伤. is this defect, development long glass fiber reinforcement thermoplastic property plastics （LFT）. LFT products in glass fiber long degree relatively long, generally can to 3～5mm, but also fiber long degree distribution uniform, can has improve/increase products force property can, especially is impact strong/high degree and products resistant heat stabilized property, 因而受 to 越 越 more 关注. currently LFT存 in types type type processing manufacturing methods, types is processing formed LFT母 material, rear in 经 injection molding parts molding processing methods; types is method in mixed technology, in production upper mixed glass fiber, plastics and additives rear molding is products, pelletizing in step/link. LFT母 material method LFT粒 material 早期曾 use cable method, powder 末浸渍 method and other made 备. 近十余 year using/adopting types new process: make glass fiber coarse through 特殊模头, meanwhile toward 模头供入 thermoplastic property plastics, in in coarse by strong/high made dispersion 开, to melt resin 浸渍, make fiber by resin cover/cap, cooling rear formed relatively long material 粒(10~25mm). due to fiber full by resin 包围, in injection molding parts molding fiber to screw loss degree reduce, in most products in maintain relatively long long degree. outer development long glass fiber reinforced polypropylene (PP) injection molding parts molding technology in, for/regarding raw materials requirements relatively high, need using/adopting types ultra- low melt viscosity polypropylene (PP) resin （ resin melt flow index is 300g/10min）, make in its in glass fiber in processing process in to relatively small force. meanwhile is ensure products strong/high degree, need add types high crystallization structure polypropylene (PP) resin. LFT material in type glass fiber content is 40%, 一 “ ultra- concentrated degree ” material in glass fiber content 甚至达 to 75%~80%. LFT in mixed technology in mixed molding technology, is will Raw Materials mixed process melt products molding process （ extrusion or injection molding parts ） in, make plastics composite/compounding material mixed and molding in strip/profile production upper 连续不间断完 formed technology. its as principle is: in production upper 游设置一台连续供 material equipment, can is more separation 体积计 amount material or heavy amount material plant/unit, will plastics and various additives, material and other ratio/proportion add tool has mixed combined function extrusion machine in. extrusion machine formed below/following function: 1, melt plastics will its and additives and other separation mixed combined; 2, strong/high force and melt, to force degree; 3, screw 旋转自动 will glass fiber coarse from in 拉出, belt/tape material in, glass fiber (GF) by 剪切折断, by plastics melt 浸渍并 in function lower dispersion melt in. glass fiber (GF) dispersion uniform rear, material material can 直接进入 lower 游, lower can is extrusion molding, can is injection molding parts molding to products. LFT in mixed molding advantages main/primary has 两: is cost low. in mixed technology production large structure parts ratio long glass fiber sheet/slice thermoplastic property plastics (GMT) compression molding parts cost low 20%~50%. outer has USA GE plastics company production is Aedel polypropylene (PP) GMT is 1.3美元/磅, in mixed LFT cost low 于1美元/磅. is products property can excellent. due to improve/increase ensure products in fiber long degree, make products strong/high degree, rigid degree to improve/increase, another also has molding cycle short, products has waste material, recycling and other advantages, outer positive in 逐步推广 application. Germany Krauss-Maffei company and add large Husky company development in mixed injection molding parts machine achieve product series 化, Krauss-Maffei company product already used for manufacturing 克莱斯勒（DaimlerChrysler） automotive table/sheet 盘 通 gas 道. Krauss-Maffei company already in full 球售出30 more injection molding parts mixed machine, its in 约1/3 by USA injection molding parts processing 厂购入, main/primary used for automotive and packaging applications. 图1 in mixed injection molding parts molding equipment in inner, machine has company and 华南理工 large polymer new type molding 装备国家 engineering research in combined as, development inner in mixed injection molding parts molding equipment （图1）, equipment clamping force 650吨, injection amount 3000克. new equipment using/adopting melt material 缸, more melt and 柱塞式 injection for material material process/workflow has control, will 连续 配 mixed process and cycle type injection process formed is 一体. remove outer, also using/adopting tool has independent Knowledge patent technology: is mixed system using/adopting 华南理工 large 学发明 平行三 screw mixing/compounding extrusion technology. this type of new technology using/adopting mixed equipment is has screw in material in 呈“一字形”排列 三 screw extrusion machine, 如图2 示, screw toward 旋转, has 两 啮 combined 剪切区. this system structure 紧凑, for material material property strong/high, 塑化, mixed combined and dispersion property can high toward di screw, more large large excellent 于传统 injection molding parts machine mono screw, is has improve/increase plastics processing in material and additives mixing/compounding, dispersion 效果,不但适 combined processing glass fiber reinforcement polymer material system, meanwhile combined processing hot property material 如天然木 fiber polymer composite/compounding material, machine powder filling polymer, powder plastics and other. in mixed injection molding parts molding equipment currently can assembly is 75mm, 65mm, 50mm, 35mm and other different 直径 三 screw extrusion machine, can force can according to production products weight large small and production efficiency separation adjustment. 图2 “一字形”排列 and other long and other di screw 俯视图另一 technology is injection system using/adopting injection molding parts molding technology, this technology is through in injection screw or upper add toward 振动, will machine 械振动场引入 polymer injection, holding pressure and cooling process types new type injection molding parts molding technology. in injection processing conditions lower, composite/compounding material flow property improve/increase, this reduce injection and holding pressure pressure or reduce injection temperature degree, from decrease small flow for glass fiber 剪切, improve/increase products in glass fiber long degree, increase products density, most improve/increase products force property can. application this patent technology in mixed injection molding parts molding equipment through time for PP＋ glass fiber (GF), PP＋麻纤 and other multiple material material system mold trial 运行, and 传统 配 mixed pelletizing ＋ injection molding parts molding process versus ratio, molding 同样一 材 material is PP add 30％ glass fiber (GF) products, can consumption reduce 45%, molding cycle shrink short 20%, products property can to improve/increase. in mixed injection molding parts molding technology energy saving main/primary below/following several 方面: （1） using/adopting screw extrusion machine, mixed process material material extrusion mono consumption ratio using/adopting di screw low 15%; （2） using/adopting in mixed method molding, decrease/reduce one-time cooling and add hot process, less one-time injection molding parts machine process, versus ratio injection molding parts molding less 节省 20% can consumption; （3）动态 injection molding parts molding technology 引入, reduce material table/sheet degree, decrease low injection process 10% can consumption. molding cycle shrink short main/primary is due to efficiency improve/increase and due to injection temperature degree reduce belt/tape cooling time shrink short. screw extrusion machine mixed combined mixing/compounding large large high 于传统 injection machine in mono screw 塑化效果, can obtain more good melt quality and more high efficiency, 此台样 machine screw 直径50mm, most high speed 300rpm, most large extrusion amount can to 250kg. this can large large shrink short injection molding parts machine 塑化计 amount time. mixed system in material material separation and mixed combined make rear injection process temperature degree can reduce, decrease/reduce injection cooling time; again add upper injection technology application, make material material table/sheet degree decline, and holding pressure time versus shrink short, or can 进一步 reduce injection temperature degree. comprehensive upper factors, injection molding parts molding cycle shrink short, production efficiency improve/increase. remove upper significantly advantages outer, its it in mixed injection molding parts molding equipment 一样, new equipment tool lower advantages: reduce raw materials and production cost in mixed injection molding parts molding equipment can in equipment upper 一步完 formed material mixed and molding, plastics, filler and additives can separation procurement, versus comparison use from material supply 商处购买 can very large separation cost, especially is for/regarding certain use specialized material, more can cost advantages. in mixed process made glass fiber reinforcement thermoplastic property plastics, its manufacturing cost obvious low using/adopting glass fiber (GF) material methods made 备 材 material （ table/sheet 1）. for/regarding tool has material formulation R&D can force injection molding parts processing 商, can development material formulation, manufacturing certain property can products can has 自己独特 product property, make product more add 丰富. table/sheet 1 两 types glass fiber reinforcement thermoplastic property plastics manufacturing cost comparison in mixed molding equipment processing process in, material from add hot to molding 仅仅进行 one-time add hot 历程, versus ratio 传统配 mixed pelletizing ＋ injection molding parts molding process less one-time add hot, and cooling process need can consumption, 常规认 is injection molding parts machine in process can consumption injection molding parts cycle can consumption 30％－40％, can new technology belt/tape cost reduce overlook. glass fiber reinforcement thermoplastic property material injection process in, due to glass fiber (GF) hardness large, for/regarding injection machine screw and material abrasion loss versus heavy, remove screw and material abrasion loss rear formed products property can decline outer, more screw and material add large production injection molding parts processing very large separation cost. in in mixed injection molding parts molding equipment in, glass fiber (GF) for/regarding screw and material abrasion loss main/primary glass fiber (GF) rigid rigid add screw mixed system rear mixed process, mixed formed rear material material for injection machine material and abrasion loss degree versus for relatively small. screw mixed system screw and material is 积木组 combined 式, can separation more to abrasion loss and material 筒, more strip/profile screw and material 筒, this reduce production injection molding parts processing production and cost. suitable scope/range in mixed injection molding parts molding technology can combined more separation blending material material system injection molding parts molding or for material material mixed combined quality requirements high injection molding parts molding, plastics and plastics blending plastics alloy, machine material filling plastics, fiber reinforcement plastics, difficult dispersion color powder is new material mixed and other and other. but also, for/regarding 客户 讲, use this technology, formulation rise grade more or is selection more 经济 材 material will non simple, can speed meet/satisfy market need. in mixed molding equipment 配备 三 screw extrusion machine processing parameters and injection machine processing parameters can mono adjustment, in 同一台 equipment upper can through screw speed, material speed degree adjustment processing conditions, to different property can requirements products. injection molding parts molding process using/adopting 柱塞式 injection process, mixed good melt material material through material 缸进入 to injection machine material in, injection amount 不会像传统 injection molding parts machine that to screw has long degree made, need injection long degree and 直径就 can meet/satisfy large scope/range injection amount. products property can excellent in mixed injection molding parts molding technology processing process in, reinforcement fiber through screw belt/tape to uniform mixed combined good polymer melt in, need and solid plastics pellets scratch and pressure process, decrease/reduce glass fiber (GF) in solid 体输送 and melt process in loss 伤折断, make mixed process versus comparison relatively temperature and, ensure products in most large glass fiber (GF) long degree. through will molding products rear 放入马弗炉燃烧, will plastics separation 烧掉, can products in glass fiber long degree to 5mm above （图3）. therefore molding products strong/high degree, rigid degree to large large improve/increase, long glass fiber (GF) reinforcement function can to separation 发挥. this type of versus for temperature and mixed combined dispersion process especially combined hot property fiber material. from plastics degree 说, versus ratio 传统 先 pelletizing again injection molding parts process, in mixed injection molding parts molding technology in plastics one-time add hot process, not only can decrease/reduce hot 敏感材 material thermal degradation 危险, but also for/regarding maintain plastics property can is has 利. another, in mixed injection molding parts molding equipment in mixed system ——平行同 toward screw extrusion machine in as in is stability 运转, is material material in equipment in time is basic 一致, this for/regarding 塑化, mixed combined and dispersion quality property especially key/critical. this full 克服 普通 injection molding parts machine in due to screw and has long degree 变化而引起 material material and mixing/compounding quality this defect, make products material property improve/increase, warpage deformation rate decrease small. 图3 in mixed injection molding parts molding products in glass fiber (GF) long degree （图 in mono is 0.1英寸） application outlook/prospects vast in mixed injection molding parts molding technology is new generation in mixed technology, remove in industrial in application, also can in home appliances, electronics, 造船, packaging, and other industry in use, application outlook/prospects separation vast. very has outlook/prospects typical applications is plastics ＋天然麻 fiber this category of environmental protection type material molding. utilizing new technology, fiber again need formed pellets 状, can will add to mixed system in and plastics mixed combined, and molding products in fiber mixed combined dispersion relatively injection molding parts machine has obvious improvement （图4）. for/regarding day development and other environmental protection type material application, 例如木塑 sheet/plate, furniture, pallet and other product production, in mixed injection molding parts molding technology will performance 出独特 advantages. 图4 in mixed injection equipment molding PP＋25％麻 fiber products