Shanghai Daoqin Plastics Co., Ltd.

丁苯 transparent impact resistant resin, also 称K-Resin(K- resin). is styrene, butadiene is mono 体, 以烷基锂 is agent, using/adopting anionic solvent liquid polymerization technology combined formed types copolymer, its key features is has high transparency property and good impact resistant property, density small, color force strong/high, processing properties excellent, property, used for manufacturing, made 鞋, toys manufacturing, food container and packaging, medical devices, day high products, electrical appliances table/sheet and and other material (如GPPS, SAN, SMA, PP, HIPS and other)掺 mixed modified and other field/area. and other transparent polymer versus comparison, K- resin copolymer features is density low, from 经济角 degree upper more has force. K- resin rate ratio non styrene type transparent resin high 20%～30%, combined USA food product tube/pipe FDA 21 CFR 177 1640 strip/profile and Europe EEC 指引90/128/EEC strip/profile 款 规定, can used as food packaging. resin is separation crystallization polymer, flow property good, processing product surface light slip, gloss good, transparent degree high, can using/adopting processing methods processing, injection, extrusion, film and 流延, in blow molding, hot molding and other processing methods, and can in large separation general purpose equipment upper processing, need equipment and injection molding parts mold. resin in production process in already remove volatile content, generally wet, remove non in wet ring in and processing, processing front generally need drying. volatile content high, products transparent degree reduce, generate bubbles, in 40～65℃ hot dry 2h left right, dry temperature degree can high, 否则丁苯 resin can can in 一起. processing in use long ratio small, pressure shrink ratio low to in and other screw, injection molding parts molding screw long ratio small 于26, film generally is 24, film is 28, pressure shrink ratio generally is 2.3～2.8, screw has strong/high mixed 段, reduce for polymer and in screw time. meanwhile, using/adopting 流线形 melt runner, runner most good light, decrease small melt flow direction 改变, melt long 期滞留 in runner in, remove long material for product 污染. internal most good 镀铬抛 light 处理; calendering and other 辊筒应镀铬抛 light 无斑点. is obtain most good transparent degree and gloss, injection molding parts mold 应该抛 light, gas good, semi large 一, 也应该避免 device thick degree 突然变化, is thick 突然变化往往会 generate force in, 而导致 different shrinkage rate make products warpage, products appearance can can for 称, thick degree uniform. injection molding parts molding resin generally selection screw injection molding parts molding machine type, injection machine use 自锁式 nozzle, material material in machine 筒留太 long time. material material in machine inner external add hot and screw function melt 塑化, can through adjustment screw speed and back pressure improvement quality, high temperature degree (>250℃)会 reduce resin property can and appearance poor 化, resin for injection speed degree 敏感. products 缺口敏感, loss more in 缺口处, 但缺口无锐角, shrinkage rate is 0.1％一0.8％, material use amount most high ultra- 50％. resin features is use property good, 经 反复回 use, its physical properties, optical property can and property can has small 变化. sheet/slice extrusion pure resin or PS and resin blending material can through extrusion molding made formed sheet/slice 材, production sheet/slice transparent degree high, tough property good, strong/high degree large, easy molding processing, already 广泛 应 used for food product, 医药, textile product, day use product and fast and other industry. 开停车时, machine inner material material need dry 净, resin long in machine inner or workshop 歇均会导致晶点 generate, but also 晶点会 in machine inner 继续生 long, is anti phenomenon 发生, in 开停车时 need use 100％ PS-GP进行置换, machine 筒, heavy 时应进行人工清理. sheet/plate sheet/slice extrusion use mono screw extrusion, material temperature degree in 180℃ left right. amount in 230℃ left right. using/adopting can adjustment thick degree 衣架式 runner and machine 头; pressure light machine has temperature degree control device, ratio need sheet/slice thick degree more 0.05mm, lower and target/goal thick degree 一样. upper light and machine 头 距离应尽 can can 靠近, generally is 50～100mm. upper light temperature degree for sheet/slice transparent degree effect/influence obvious, adjustment temperature degree make sheet/slice in upper; speed degree need and pressure light basic 同步, ratio pressure light fast can achieve grade speed. upper lower 辊 间隙也应 can adjustment, 卷取辊无 grade speed must and 牵引辊同步, make sheet/slice maintain 一定 张 force, temperature degree low 于丁苯 resin heat deflection temperature (HDT), product wide degree ratio most large wide degree small 10―25mm. blow molding film and film resin film tool has rigid 挺, transparent, property, gas property and can printing property and other features, combined new food packaging, generally using/adopting mono screw extrusion film blowing machine, 如PE-HD upper method film equipment. type blow molding conditions is: material temperature degree ultra- 180℃. amount ultra- 230℃, pressure in 0.14～0.42, ratio 3/1. generally use pure resin as mono or composite/compounding film inner in 层, 开停车置换 material remove PS-GP outer also can use PE-HD, in machine and machine between add 装40―200目 滤网, remove pellets. machine generally using/adopting 直角式 in material machine or machine 头, blow molding machine 头 口模缝隙 wide degree mono extrusion is 0.8―1.0mm, more 层共挤则 is 1.0―1.5mm. cooling using/adopting small 喷风口 or 无喷风 mono ring can, ring generally high machine 头30～100mm 位置, ring inner ratio inner large 150―300mm, ring cold 风吹出角 most good is 40 degree －60 degree, 霜白线 and machine 头 距离应 in 1～4 film tube/pipe between, is 15 degree 一40 degree, can 调 人字 sheet/plate 也应延伸 to 此处, in 霜白线 upper 方70～150cm处 and film tube/pipe 接触, maintain film tube/pipe stability, decrease/reduce film 褶皱, if sheet/plate adjustment to this low, 则应调 high 霜白线. film tube/pipe can can short, film maintain in 40～60℃ scope/range, decrease/reduce equipment key/critical is machine 头口模, ring, sheet/plate and film in 心线垂直 formed 一线, can ensure film 无褶皱, most good using/adopting 自动旋转 夹 film and sheet/plate. due to has butadiene structure causes, extrusion film combined property can especially good, is using/adopting resin production mono film or more 层共挤 film inner 层, must use agent, improvement film property can, anti film between combined. film extrusion temperature degree can high extrusion film, machine temperature degree scope/range is 190～215℃, machine temperature degree is 200～220℃. in generate 鱼眼 情况 lower, can improve/increase temperature degree, make transparent degree improve/increase, meanwhile reduce melt pressure, decrease/reduce material material time. machine using/adopting thick degree can 调 衣架式 machine 头, wide 0.30～1.0mm, has phenomenon, attention/notes reduce wide degree, extrusion speed degree and machine and cooling 辊间 空隙. use 风刀 丁苯 resin film in cold upper, 不适宜 use cold 辊, cold temperature degree control in 50～80℃ between. and cold 辊 空隙应 small 于10cm. resin film impact strong/high degree 会随 吹胀 ratio and ratio increase reinforcement, film shrinkage force low, in shrinkage packaging rear generate deformation phenomenon or “狗耳” issues, use packaging various pressure product. resin film can using/adopting hot technology 封口, can in relatively low temperature degree conditions lower combined, combined time relatively short. hot strong/high degree 取决于封 combined surface temperature degree, pressure and combined time. in blow molding resin can using/adopting in blow molding production transparent also tool has high impact strong/high degree, various dimensions and product, small bottle, medical grade plant/unit and high 身 陈列 show/display bottle and other. type processing conditions is: processing temperature degree and film processing temperature degree versus 似, gas and pressure in 0.25～0.60, injection molding parts mold temperature degree 16℃～40℃. resin generally selection in molding equipment, can using/adopting 汇流式 machine and dispersion machine 头, 坯直径 in extrusion has different degree 膨胀, rate is －15％～＋5％. resin most large ratio is 3: 1, injection molding parts mold gas 效果差会 in type and positive in type between 空囊裹入空 gas, make type can and injection molding parts mold 紧密 贴 combined, products cooling non-uniform, surface deformation. meanwhile, injection molding parts mold cooling non-uniform can can products separation 残留应 force and shrinkage degree 不一, products warpage deformation. resin shrinkage rate low, shrinkage rate small 于1.5％, for/regarding large parts products, in bottle and 截坯口处截面 thick need cooling balanced products shrinkage rate, for/regarding thick products must shrinkage factors. hot molding resin tool has excellent melt strong/high degree, can deep 拉, shallow 拉, thick and thin products, can using/adopting PS-GP processing equipment hot molding, products temperature degree scope/range is 135～150℃, amount reduce mold temperature degree, products warpage, shrinkage rate is 0.5％一0.8％. injection molding parts mold high degree light, in design 时应 掉倒伐角 or add large 斜角, can toward gas system 注入空 gas 以释放 products and injection molding parts mold between true 空, large ejection gas pressure make products or deformation.