Shanghai Daoqin Plastics Co., Ltd.

早 in 20世纪70 year 代, polyolefin （HDPE, PP）药 use plastics bottle in outer already to application. 20世纪80 year in 期, inner force made 药 injection molding parts processing and Shanghai large 明玻璃 injection molding parts processing rate from outer 引进 “注-吹”流 water production used for production product packaging plastics container, from 而推动 polyolefin （HDPE, PP）药 use plastics bottle in production and use. for use plastics container molding process, can selection raw materials and GMP specification and process process/workflow and other issues introduction. ◆ 江苏维达 machine has company 刁诗民药 use plastics bottle commonly used production process 1, in extrusion blow molding （Extrusion-Blow molding） in extrusion blow molding is utilizing extrusion machine extrusion tube/pipe, rear use 剪刀（人工） or plant/unit （自动） will its formed small rear to injection molding parts mold inner made molding. its advantages is: equipment simple, investment small, cost price low; disadvantages is: bottle 口不平, property can 差. in addition, in extrusion blow molding process suitable plastics raw materials is PE, commonly used is LDPE, its retardant property can low 于HDPE and PP, shelf life short. 2, method “注-吹”（Two steps injection-Blow molding）二步 method “注-吹”实际 upper is injection, blow molding separation 别由两台 machine 进行操 as, 俗称“二步 method ”. specific 而言, 第一步 is 由一台普通 injection molding parts machine injection molding parts molding tube/pipe 坯, 此时, tube/pipe bottle separation （ bottle 口, 螺纹） already molding; 第二步 is 由人工 will tube/pipe in 蜂窝状 add hot device or 自动循 ring add hot belt/tape upper, add hot temperature rear, again will its to bottle machine inner use pressure shrink gas made molding. this type of methods advantages is: equipment comparison simple, investment comparison less; bottle 口整齐, property can good; product product types development speed degree fast, injection molding parts mold use comparison low. its disadvantages is: injection tube/pipe and blow molding separation 步进行, make products easy by 污染, difficult ensure product through 菌检; product property 差, 不太适应 large amount production. 3, method “注-吹”（One step injection-Blow molding）一步 method “注-吹” is injection and blow molding in 同一台 machine upper formed. according to different machine types, usually separation is 三工位 and 二工位“注-吹”. 三工位“注-吹” made bottle machine 三 工位以120°角 formed and other 边三角形 distribution, its in, 第一工位 is injection molding parts molding 工位, 第二工位 is blow molding 工位, 第三工位 is bottle 工位. this 三 工位 can meanwhile 运行, not only large large improve/increase production efficiency, but also can and belt/tape 连接, 自动计数 packaging, true positive achieve use plastics bottle production full process “无人手接触”, from ensure product 洁净卫生. 二工位“注-吹” made bottle machine 两 工位 can upper lower or front rear 排列, 第一工位 is injection molding parts molding 工位, 第二工位 is blow molding 工位. due to less specialized bottle and cooling 工位, therefore difficult achieve full 自动计数 packaging （ generally is dispersion 装人工计数）. 同三工位 made bottle machine versus ratio, its production efficiency relatively low, production cycle relatively long. method “注-吹” process advantages is: 自动化程 degree high, machine production capacity large; bottle 口 平整 degree high, property good. selection HDPE/PP as is raw materials 时, bottle 子 壁 thick comparison uniform, retardant property can excellent 良, make product 保质储存期 long. its disadvantages is: equipment investment relatively large, injection molding parts mold complex, system requirements relatively high, therefore, combined small product types, small amount production. is, for/regarding large amount production 而言, can to high quality low cost product, 经济效益 relatively good. currently, inner standards 化 药 use packaging injection molding parts processing basic upper is using/adopting method “注-吹” process equipment, 并以三工位 equipment is 主. upper 著名 “注-吹” molding equipment manufacturing injection molding parts processing main/primary has USA Wheaton company and Jomar company, Germany Battenfeld company and Bekum company, Japan ASB company and solid company and Italy Uniloy Milacron company, this company currently production machine type using/adopting method 三工位 methods, its in, USA product using/adopting screw structure, Germany and Italy product using/adopting screw structure. in inner, 江苏维达 machine has company 自1989 year 开始, 首家研 made “三工位”一步 method “注-吹” molding machine, 并于1991 year will product toward market. currently, its production 规模达 to year 100 strip/profile production 线, belt/tape China product packaging container （ especially is solid material sheet/slice agent, packaging ） production technology improve/increase. use plastics bottle commonly used plastics raw materials 1, polyolefin combined made as use plastics container polyolefin type plastics raw materials 包括: polyethylene (PE) （PE）, polypropylene (PP) （PP）, polyvinyl chloride (PVC) （PVC）, polystyrene (PS) （PS）. its in, polyethylene (PE) also 包括: high density polyethylene (PE) （HDPE）, in density polyethylene (PE) （MDPE）, low density polyethylene (PE) （LDPE）, property low density polyethylene (PE) （LLDPE）; polystyrene (PS) high impact resistance polystyrene (PS) （GPPS-HIPS）. 2, polyester polyester type plastics raw materials main/primary has: poly for 本二甲 acid ethylene glycol ester （PET）, polycarbonate (PC) （PC）, poly for 萘二甲 acid butanediol ester （PEN）. commonly used plastics raw materials density property can table/sheet 1. from table/sheet 1 can 看出: ● solid material packaging selection HDPE and PP, this 2 types material tool has excellent resistant water gas property can, can has anti material 因吸潮而变质. is, for/regarding easy oxidation 变质 药 material, use HDPE and PP材 material. HDPE and PP材 material usually is using/adopting method “注-吹” process; ● LDPE retardant oxygen property can 极差, combined used as use plastics bottle raw materials, more can 灌装贮存期 relatively long material; ● PET for water and oxygen gas tool has excellent retardant property, appearance transparent, is liquid material （糖浆, liquid type ） 理想 raw materials, generally using/adopting “注-拉-吹” process. table/sheet 1 commonly used plastics raw materials density property can comparison types type density light property hardness water gas rate oxygen rate LDPE 0.91～0.92 semi transparent soft property 20 40000HDPE 0.94～0.96 semi transparent （ low 于LDPE） in and other 10 600PVC（ food grade ） 1.35～1.45 relatively transparent hard property 40 150PP 0.90～0.91 semi transparent （接近 transparent ） hard property 11 860PET 1.4 transparent hard property 27 60PC 1.2 transparent hard property 80 200注: water gas rate mono 位g/m2 24h MPa（0.025mm）JIS-Z-0208 methods; oxygen gas rate mono 位cm3.m/m2 Mpa 24h 20℃ 65%RH（0.025mm） pressure method 3, color agent and processing additives bottle color agent usually selection oxidation titanium TiO2（锐 titanium type or 金红石 type ）, TiO2 content ≥98%Wt, add amount is 1.0%～1.5%Wt. commonly used processing additives has lubricant hard acid zinc and polyethylene wax, it is white powder 末, add amount is 0.1%～1%Wt. in recent years, is meet/satisfy GMP and grade requirements, generally will TiO2, hard acid zinc, polyethylene wax and LDPE（ high M•I） mixed combined in made formed concentrated shrink masterbatch, can large large decrease/reduce production process in powder 尘污染. type TiO2 masterbatch formulation is: TiO2（特 grade ）60%, hard acid zinc 8%, polyethylene wax 10%, LDPE22%. GMP specification and process process/workflow 规划 药 use plastics bottle production injection molding parts processing not only selection property can can 靠 “注-吹” molding machine and precision “注-吹” injection molding parts mold, also for versus GMP specification and process process/workflow system design 规划, main/primary inner 容包括: 1, in 央空调 system （GMP standards injection molding parts processing 房, grade 进化, GB/T16292-16294-1996） main/primary indicators: degree grade, grade 滤（ coarse, in, high ）, 顶送侧回 methods. gas 次数≥15次/h, temperature degree T=26℃～28℃. 2, cold water system: temperature degree T=5℃～15℃, pressure P≥0.2MPa, amount Q≥额定 value. 3, cooling water system: temperature degree T≤28℃, pressure P≥0.2MPa, amount Q≥额定 value, using/adopting cooling ring system. 4, pressure shrink gas system: 配置稳 pressure 罐, cold drying device and 自动排 water 阀, pressure P≥1.0MPa, amount Q≥标定 value, pressure shrink gas temperature degree can from 65℃ left right adjustment to 20℃ below/following, improve/increase production efficiency;二 grade 滤（40µ, 5µ）, can ensure product degree. 5, injection molding parts mold temperature device ● water mold temperature machine: as temperature degree Tmax≥120℃, P≥0.4MPa, micro device or PID control. ● 油介质 mold temperature machine: as temperature degree Tmax=30℃～300℃, P≥0.2MPa, PID or one-time control table/sheet. usually, production use plastics bottle selection water mold temperature machine more is 适宜, can ensure bottle quality, anti 止油介质泄露污染药 bottle. 6, mixed material, add material, powder plant/unit ● using/adopting device ensure mixed material time can 控, time long or short difficult to most mixed material 效果; ● most good using/adopting add material or true material methods add material, selection concentrated shrink masterbatch color, anti workshop inner powder 尘污染 ultra- 标; ● powder machine selection low 噪音, high efficiency 旋转切刀（ main/primary is powder bottle cover/cap injection molding parts runner material and a small amount of waste bottle ）, material add amount combined 适（ small 于15%Wt）, anti 止反复循 ring degradation effect/influence property can. different grade raw materials material must separation 开处理, can mixed use. generally, bottle use resin M•I≤1.0, cover/cap use resin M•I>5. 转自鑫鑫 plastics 网