Shanghai Daoqin Plastics Co., Ltd.

cold water system, 3 system design (gmp process process/workflow. cooling water system, pressure shrink gas cold 冻净化 system, electrical system, machine)十 separation important step/link, is enterprise stability production and development necessary conditions.

一, brief introduction

Italy uniloymilacron company, world upper “注-吹” molding process methods 源于二十世纪五十 year 代初. outer polyolefin (hdpepp药 use plastics bottle application 早于七十 year 代. related equipment research manufacturing has USA wheatonjomar Germany battenfeldbekum Japan asb青木 solid. main/primary machine type is method 三工位, USA, Japan using/adopting screw structure, Germany, Italy using/adopting screw structure.

二, use plastics bottle commonly used production process and raw materials selection

1 production process

use 剪刀(人工) or plant/unit (自动)切 formed small rear to mold inner made molding. 1挤吹”extrusion-blowmould also in extrusion blow molding. extrusion machine extrusion tube/pipe.

利息 price low. advantages: equipment simple, investment small.

密封 very 差. raw materials usually selection ldpe retardant property can low 于hdpe/pp装药保质贮存期 short. disadvantages: bottle 口不平.

俗称“二步 method ”第一步: 由一台普通 injection molding machine injection molding tube/pipe 坯, 2二步 method “注-吹”twostepsinjection-blowmould injection, blow molding ”由独立 两台 machine separation 开进行. tube/pipe bottle separation (bottle 口, 螺纹) already molding; 第二步: will tube/pipe in 蜂窝状 add hot device or 自动循 ring add hot belt/tape upper add hot temperature, rear to bottle machine use pressure shrink gas made molding.

investment relatively less. bottle relatively 平整, advantages: equipment relatively simple. 密封良 good. product types development fast, mold use relatively low, price in, low.

easy 传递污染, disadvantages: injection tube/pipe and blow molding separation 步进行. difficult ensure, product property 差, 不太适应 large amount production.

第一工位 is injection molding 工位, 3一步 method “注-吹”onestepinjection-blowmould injection, blow molding ”同一台 machine upper formed. according to different machine types also 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. 第二工位 is blow molding 工位, 第三工位 is bottle 工位. 三 工位 can meanwhile 运行, production efficiency high, cycle short, but also can and belt/tape 连接自动计数 packaging, true positive achieve use plastics bottle production full process in and 人手“无接触” ensure product 卫生洁净. 二工位 注-吹” plastics machine 二工位 can upper, lower or front rear 排列; 第一工位 is injection molding 工位, 第二工位 is blow molding 工位; due to less specialized bottle and cooling 工位, therefore relatively difficult achieve full 自动计数 packaging (generally is dispersion 装人工计数) another, production cycle relatively long, production efficiency low 于三工位.

production can force high. bottle 口平整 degree high, advantages: 自动化 water high. 密封极 good. selection hdpe/pp raw materials, bottle uniform, retardant property can excellent 良, 装药保质贮存期 long. currently, inner specification 化药包 enterprise basic upper using/adopting method “注吹” process equipment, its in 以“三工位” structure is 主.

mold complex, disadvantages: equipment investment relatively large. system requirements relatively high. 不太适应 small product types, small amount production. large amount production can obtain high quality low cost, 经济效益 good.

2. commonly used plastics raw materials

solid material packaging selection hdpe/pp一步 method “注-吹” process production polyolefin plastics container; liquid material 灌装宜 selection

pet/pp注-拉-吹” process production plastics container.

3 color agent and processing additives

polyethylene wax. is white powder 末, bottle color agent usually selection oxidation titanium tio2锐 titanium type or 金红石 type) its in tio2 content ≥98％wt添 add amount 1.01.5％wt commonly used processing additives has lubricant hard acid zinc. add amount 0.11％wt

is meet/satisfy gmp and grade requirements, in recent years. generally will tio2 hard acid zinc, polyethylene wax and ldpe high mi mixed combined in made as formed concentrated shrink masterbatch, can large large reduce production process in powder 尘污染. type tio2 masterbatch formulation formed lower: tio2特 grade)60％ビ仓 acid zinc 8％ゾ垡蚁├10％ldpe22％ for/regarding solid material packaging hdpepp comparison combined 适 资 material, tool has excellent resistant water gas property can, can has anti product 吸潮变质. for/regarding easy oxidation 变质 药 material use. ldpe retardant oxygen property can 极差, production use plastics bottle, more can 灌装贮存期 relatively long material. pet for water and oxygen gas has excellent retardant property, appearance transparent, liquid material (糖浆, liquid type)理想 selection.

三, use plastics container “注-吹” molding equipment and mold

especially is injection molding mold temperature 调控都 for most bottle product quality effect/influence. structure 包括: injection molding 模(初 type 模) blow molding 模(molding 模)模芯 rod (共三组) hot runner, nozzle, bottle sheet/plate, rod base/seat large separation formed. mold material, thermal expansion coefficient, outer table/sheet light degree, processing process and degree, design water 平, debugging experience.

四, system design

system design and sleeve/set plant/unit for “注-吹”流 water efficiency effect/influence 应该十 separation heavy 视.

必需 for versus gmp specification and process process/workflow system design 规划, use plastics bottle plastics bottle production enterprise remove selection property can can 靠 注-吹” molding machine and quality precision 注-吹” mold outer. main/primary inner 容包括:

gb/t16292-16294-1996 1 in 央空调 system (gmp specification 厂房, grade 净化.

三 grade 滤(精, in, high)顶送侧回 methods. main/primary indicators: degree grade.

换 gas 次数≥20次/hr〓 temperature degree t=2628℃

2 cold water system

pressure p≥0.2mpa流 amount q≥额定 value temperature degree t=5°～15°.

3 cooling water system

pressure p≥0.2mpa流 amount q≥额定 value ヅ缌堋⒀ ring system temperature degree t≤28°.

4 pressure shrink gas system

配置稳 pressure 罐, pressure p≥1.0mpa流 amount q≥标定 value. cold drying device, grade 滤(40μ, 5μ)自动排 water 阀, pressure shrink gas temperature degree 65°＜20℃.

5 mold temperature device

p≥0.4mpa micro device or pid control; water mold temperature machine: as temperature degree tmax≥120℃.

p≥0.2mpapid or one-time control table/sheet 油介质 mold temperature machine: as temperature degree tmax=30-300℃.

以 ensure bottle quality, 建议: production use plastics bottle selection water mold temperature machine. anti 止油介质泄漏污染.

6 mixed material, add material, powder plant/unit

mixed material time can 控(定时 device) long short can to most mixed combined 效果.

但应 selection concentrated shrink masterbatch color, add material methods using/adopting add material, can using/adopting true material methods add material. 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 runner material and a small amount of waste bottle)回 material add amount combined combined 适(small 于15％wt anti 止反复循 ring degradation effect/influence property can. different grade raw materials material separation 开处置(generally bottle use resin mi≤1.0 cover/cap use resin mi＞5不 can mixed use.

应做 to 五, use plastics bottle production according to its property can.

密封渗透 property can excellent 良, 1 selection “注-吹” process ensure bottle 口平整 degree, density high. from ensure stability property, long shelf life.

from to high 质, high 产, high 效, low cost, investment fast 目 2 selection method 三工位“注-吹” molding machine and precision mold ensure product degree.