Shanghai Daoqin Plastics Co., Ltd.

plastics in active in 无处不 in, need 知道, usually use plastics is types pure material 质, it is many material made formed. its in polymer/macromolecule polymer (or combined formed resin) is plastics main/primary formed separation, in addition, is plastics property can, also need in polymer in add various 辅助材 material, filler, increase agent, lubricant, stabilizer, color agent and other, can formed is property can good plastics. plastics processing is combined formed resin development development 起, it and plastics machine development versus promote. less plastics processing technology, 系借鉴于橡胶, metal and processing. plastics processing history can to 19世纪90 year 代, 赛璐珞诞生之 rear, its easy 燃, can use pressure method made formed block material, again machine processing formed sheet/slice 材, sheet/slice can use hot molding method processing. 进入80 year 代, plastics processing toward high 效, high speed, high degree, energy saving, large type or ultra- small, ultra- thin and other direction development, machine technology this field/area, plastics processing technology improve/increase to new water 平. for/regarding plastics processing related Knowledge, large is need understanding more more 呢? lower 面贤集网 small is large introduction plastics processing process, plastics processing precautions, plastics processing industry in use plastics equipment important property.



plastics processing process
1, extrusion
extrusion material material through extrusion machine material and screw function, thermoplastic 化, by screw toward front 推送, through machine made formed various products or semi products types processing methods.


2, blow molding
blow molding in blow molding, is types development speed plastics processing methods. thermoplastic property resin extrusion or injection molding to tube/pipe plastics type 坯, hot （ or add hot to soft 化状态）, for mold opening in, rear in type inner pressure shrink gas, make plastics type 坯吹胀而紧贴 in mold inner upper, cooling demolding, to various in products.


3, thermoforming
thermoforming types plastics processing process, main/primary principle is will plastics hard sheet/slice add hot soft rear, using/adopting true 空吸附于 mold surface, cooling rear molding, used for 各行各业 一 types technology process.


4, pressure molding
模 pressure molding also pressure made molding or pressure shrink molding, is will powder 状, or fiber plastics molding temperature degree lower mold type in, rear add pressure make its molding solid as 业. pressure molding can used for hot solid property plastics, thermoplastic property plastics and 橡胶材 material.


5, calendering molding
calendering molding will melt thermoplastic property plastics through above 平行异 toward 旋转辊筒间隙, make melt to 辊筒挤 calendering 展, tensile formed is tool has specifications dimensions and combined quality requirements sheet/slice products, most rear 经自然 cooling molding methods. calendering molding process used for plastics film or sheet/slice production.


6, foaming molding
foaming molding is in foaming material （PVC, PE and PS and other ） in add 入适当 foaming agent, make plastics generate micro structure process. has hot solid property and thermoplastic property plastics can made formed foam plastics, foaming molding already formed is plastics processing in important field/area.


7, micro foaming technology
缠绕 molding process is will resin liquid fiber （ or belt/tape, 预浸纱） according to 一定规律缠绕 to upper, rear solid 化, demolding, obtain products.


8, lamination molding
lamination molding is in add hot, add pressure lower more same or different material combined overall molding processing methods. used for plastics processing, used for processing.


9, molding
浇注 molding is plastics processing types methods. 早期 浇铸 is in at atmospheric pressure will liquid mono or poly material polymer mold inner, polymerization solid molding formed and mold inner 腔形状 same products. 60 year 代出现 nylon mono 体浇铸见 polyamide (PA) molding technology development, 传统 浇铸 concept has 改变, polymer solvent liquid, dispersion polyvinyl chloride (PVC) and melt can used for molding.


10, 滴塑
滴塑 is utilizing thermoplastic property polymer/macromolecule material tool has can features, in conditions lower tool has property, normal temperature lower also can solid features, use methods and 专门 工 tool 喷墨, in its 黏流状态 lower requirements formed design 形态, rear in normal temperature lower solid molding.


11, pressure shrink method
pressure shrink method main/primary used for hot solid property plastics products production. molding add hot make its 熔化, add pressure 冲模, again add hot crosslinked solid 化, demolding rear products.


12, resin 传递模塑
resin 传递模塑 is will resin to combined mold in lubricating reinforcement material solid process methods. technology can use material, hot pressure 罐, has reduce equipment cost, molding cost. technology in recent years development very fast, in machine industrial, automotive industrial, industrial and other field/area application day 广, research development 出RFI, VARTM, SCRIMP, SPRINT and other multiple separation 支, meet/satisfy different field/area application demand.


13, pressure
挤 pressure is use or for in in material add pressure, make generate property flow, from obtain versus mold type or 凹凸模形状 made parts types pressure processing methods. pressure 时, material generate toward pressure force, make is property relatively low material, can by pressure formed 形.


14, hot molding
hot molding is types will thermoplastic property plastics sheet/slice processing formed various products relatively plastics processing methods. will thermoplastic property plastics sheet/slice processing formed various products types relatively plastics processing methods. sheet/slice in frame upper add hot to soft 化状态, in outer force function lower, make its mold type 面, and type versus 仿 形状. cooling type rear, 经修整即 formed products.


15, molding
手糊 molding also 称手工裱糊 molding, molding, in coating good demolding agent mold upper, using/adopting as 业, 即一边铺设 reinforcement material, coating resin to plastics products thick degree is 止, rear through solid and demolding plastics products this formed process.


16, light fast speed molding
激 light fast speed molding （LaserRapidPrototyping: LRP） is will CAD, CAM, CNC, light, precision 伺服驱动 and new material and other technology formed types full new manufacturing technology. and manufacturing methods versus ratio tool has: type made property, property high; manufacturing process and manufacturing type 几何形状无关; processing cycle short, cost low, generally manufacturing use reduce 50%, processing cycle shrink short 70% above; high degree technology formed, achieve design manufacturing 一体化.


17, melt molding method
熔 melt molding method (FDM, Fused Deposition Modeling), this type of process is through will filament material thermoplastic property plastics, wax or metal filament from add hot nozzle extrusion, according to parts 每一层 预定轨迹, solid speed rate melt 沉积.


18, CNC
CNC machine control machine is types has control system 自动化 machine 床. control system can 够逻辑 处理 tool has control or other 符号指令规定 程序, will its 译码, from make machine as processing parts.
19, 3D printing
3D printing （3DP)即 fast speed molding technology types, it is types 以数字模 type parts is 基础, use powder metal or plastics and other can bonding material, through printing methods material technology. 3D printing usually is using/adopting technology material printing machine achieve. in mold manufacturing, industrial design and other field/area by used for manufacturing type, rear used for product manufacturing, already has use this type of technology printing formed parts.


3D printing in many different technology. it different in can use material methods, different 层构建创建部 parts. 3D printing commonly used material has nylon glass fiber (GF), poly acid, ABS resin, resistant use property nylon material, 石膏材 material, aluminum material, titanium alloy, 不锈钢, 镀银, 镀金, type material.


plastics processing precautions
1, plastics processing shrinkage issues is plastics processing in most Common issues 之一, for surface quality requirements high plastics products, shrinkage more is issues. therefore plastics processing process 不断完善, most large degree decrease/reduce plastics processing shrinkage issues, improve/increase product quality in 必行.
2, in plastics processing injection molding plastics parts relatively thick 位置, 如筋肋 or 突起处形 formed shrinkage need ratio 邻近位置 more heavy, this is due to relatively thick cooling speed degree need ratio 周围区域 slow more. cooling speed degree different 导致连接面处形 formed 凹陷, is 人们 熟悉 shrinkage 痕. this type of defect heavy made plastics product design and molding, especially is large type thick products electrical machine machine housing/shell and device outer housing/shell and other. upper, for/regarding day use electrical appliances this type requirements product upper must remove shrinkage 痕, for/regarding toys and other surface quality requirements high product has plastics processing shrinkage 痕 存 in.
3, formed plastics processing shrinkage causes can can has or more, processing methods, parts 几何形状, material selection and mold design and other. its in 几何形状 and material selection usually Raw Materials supply 商决定, 且不太容 easy 改变. is mold manufacturing 商方面 also has very more about/regarding mold design factors can can effect/influence to plastics processing shrinkage step/link. cooling runner design, gate type type, gate dimensions can can generate multiple 效果. 例如, small gate tube/pipe gate ratio gate cooling fast more. gate 处 早 cooling decrease/reduce type inner filling time, from increase shrinkage generate rate. for/regarding molding 工人, adjustment processing conditions is solution plastics processing shrinkage issues types methods. filling pressure and time significantly effect/influence shrinkage. parts filling rear, more 余 材 material filling to type in 补偿材 material shrinkage. filling stage/phase short will 会导致 shrinkage add 剧, most generate relatively more or relatively large shrinkage 痕. this type of solution plastics processing shrinkage methods 本身也许并不 can will shrinkage decrease/reduce to water 平, is molding can adjustment filling conditions improvement shrinkage 痕.


plastics processing industry in use plastics equipment important property
一, material system provide excellent raw materials
1, material system use processing equipment main/primary drying, 输送, amount, mixed combined equipment.
drying equipment used for easy wet material molding processing production front material 预处理, 如ABS, polyoxymethylene (POM) (POM), polycarbonate (PC) (PC), nylon (PA), has machine 玻璃(PMMA) in polyolefin type plastics certain processing process in, is ensure product quality need for its high degree drying, in random copolymer polypropylene (PP) PP-R pipe/tube production and pipe fittings injection molding and crosslinked polyethylene (PE) use polyethylene (PE) raw materials will material material drying to 需 含 water amount. in production processing in according to product for Raw Materials water amount requirements, also need separation use different drying methods and drying equipment. for/regarding filler and PVC and other material use 烘箱式 drying device; for/regarding hot property strong/high plastics using/adopting 旋转式 di true drying device; property drying use 直接式 material drying machine.
2, for/regarding material system, powder material using/adopting elastic tube/pipe 式输送 system and 罗茨鼓风 machine 式 风送 system, pellets upper material using/adopting true upper material device. in material equipment more suitable for 规模化, 自动化 production process. equipment using/adopting machine in control, various raw materials ratio/proportion through amount plant/unit amount rear mixed combined device. material 斗均装 has material 位传感 device, according to material material how much can 自动打开 or 关闭输送 pipeline upper material 桶. in material system key/critical technology is electronics 秤 准确计 amount, can will material material ratio/proportion 准确进 material.
二, temperature degree control ensure product quality
1, plastics processing process in add hot equipment main/primary used for extrusion, injection molding, calendering and other production equipment machine mold and calendering temperature degree add hot control device, currently generally using/adopting thermally conductive electrical add hot methods complex add hot methods
2, mold temperature cooling device main applications injection molding mold temperature degree cooling. generally in mold design in has cooling water 通道. cold machine separation has cold and water cold 式, cold light 便, hot can force low, water cold hot amount large, hot good, by using/adopting.
三, recycling utilizing reduce production cost
plastics processing in waste material ratio/proportion is production amount 5%～20% left right, can recycling utilizing waste material in 一定程 degree upper enterprise 生存命脉. plastics processing enterprise for 此越 越 heavy 视. currently application relatively more plastics powder machine, separation is suitable for hard product, small product powder equipment; used for soft plastics foam plastics recycling pelletizing powder equipment; used for pipe/tube, type relatively long products 直接破碎 pelletizing powder machine; used for waste filament recycling machine. in plastics recycling equipment upper, in positive low 噪音, easy as, material 斗连续 tube/pipe 式输送出 material development direction.

upper is 贤集网 small is large introduction plastics processing process, plastics processing precautions, plastics processing industry in use plastics equipment important property. China as is full most large plastics production and 消费国, Raw Materials price effect/influence to industry overall development, due to inner Raw Materials production capacity supply has 限, versus 当一部 separation Imported demand 缺口. waste plastics recycling utilizing, can understanding Raw Materials supply and demand 矛盾. inner currently waste plastics recycling versus for rear, can meet/satisfy market demand, outer waste plastics price low 廉, can processing formed recycled pellets, in inner has relatively large market demand. 随 我国经济社会 development water 平 不断 improve/increase, “洋 waste ”污染 ring 境, loss 害健康, Imported waste material 弊端也逐渐暴露出, 引起 国家 related 部门 关注. China plastics processing industrial 协会副理事 long 马占峰认 is, China 经济转 type, inner environmental protection issues and “禁 waste 令” 出台, formed Raw Materials supply short 缺, price rise. due to production cost upper rise, plastics products price 涨幅不 large, enterprise profit reduce, to plastics processing industry development belt/tape effect/influence.