Shanghai Daoqin Plastics Co., Ltd.

焊缝线差

排 gas defect.

will gas in most rear 充填 部位 and melt front 端

increase gas dimensions.

melt temperature degree low

improve/increase melt and / or mold temperature degree.

improve/increase injection speed degree.

工 parts material

且 has 烧焦痕迹

困 gas, gas defect.

improvement gas and / or will its to by 烧焦部位.

工 parts material

但无烧焦痕迹

材 material 不足.

若 has can can, increase injection amount. can can, 则转移 to relatively large machine upper.

进 material melt 堵塞.

reduce speed and back pressure.

reduce machine rear temperature degree.

injection pressure 不足

improve/increase injection pressure.

材 material viscosity high.

improve/increase injection speed degree.

improve/increase processing temperature degree.

use viscosity relatively low composite/compounding material.

expand large gate and runner dimensions.

工 parts 溢模

injection pressure high.

reduce injection pressure and shrink short time.

材 material more.

decrease small injection amount.

材 material viscosity low.

reduce injection speed degree.

reduce processing temperature degree.

mold 太松.

processing or abrasion separation 模面.

clamping force amount 不足

use viscosity relatively high composite/compounding material.

improve/increase 锁模吨位.

reduce gas thick degree.

转移 to relatively large machine upper.

孔隙 or 塌陷

工 parts inner 出现孔隙. 塌陷处脱离模壁

材 material shrinkage and melt material supply 不足

decrease small thick.

材 material solid 期间充填 pressure 不足.

increase pressure and long time.

increase large gate dimensions.

will gate to most thick 部位.

increase large runner dimensions.

bubbles

工 parts surface in bubbles upper 凸起.

困 gas.

改变 gate or flow 路径.

in 该部位设置一销钉以消 remove gas phenomenon.

flow 痕迹

反 toward 充填

以 from thin to thick direction 充填.

will gate 位置转移至一 relatively thick 部位.

flow 痕迹

anionic 影

surface 不规则.

径 toward 波纹.

flow 痕迹

折皱

该部位充填不匀.

改变 gate 位置以 make melt or decrease small runner 直径.

螺旋形流纹

melt viscosity high.

improve/increase processing temperature degree.

improve/increase injection speed degree.

decrease small gate dimensions.

改变 gate type type.

改变 gate 位置以 generate impact force.

工 parts warpage

各 toward property shrinkage.

改变 gate make melt toward direction flow.

残余模塑应 force high

improve/increase processing temperature degree.

reduce pressure.

improve/increase mold temperature degree.

surface defects

gloss 不均 斑点痕迹

in high degree light mold in processing polymer/macromolecule amount composite/compounding material.

改 use molecular weight relatively low composite/compounding material.

mold type is belt/tape surface （ electronics electrical processing, 喷砂处理 and other ）.

surface defects

银 color or 放射形斑纹

材 material by 污染.

检查 water separation （ cold 凝） or drying material.

检查 recycling material is 否含污染 material or water separation. has necessary 则进行 drying.

reduce injection speed degree.

材 material 剪切系数 high.

improve/increase processing temperature degree.

increase large gate dimensions.

demolding 杆痕迹

demolding 期间工 parts soft.

延 long time.

reduce mold temperature degree.

reduce processing temperature degree.

改 is belt/tape mold surface 以便于 demolding.

increase demolding dimensions.

increase processing parts 拔模斜 degree.

decrease small thick.

use demolding agent composite/compounding material.

use relatively hard composite/compounding material.

烧焦 odor

工 parts 发黄

材 material degradation.

置换 machine 并观察 issues is again 发生.

reduce processing temperature degree. （ especially is in machine rear 段）.

reduce recycling material mixed ratio/proportion.

shrink short time.

停车 rear machine.

改 use relatively small machine.

reduce hot runner system temperature degree.

尽 amount decrease/reduce hot runner tube/pipe inner 死角.

工 parts viscous in A semi or 定模一侧

demolding force 不足.

喷砂处理A semi 模.

抛 light B semi 模.

起 use A semi cooling device.

in B semi 模设置锁定销.

in A semi inner increase processing parts 拔模斜 degree.

demolding 期间工 parts mold sticking

demolding force amount 不足.

延 long time.

reduce mold temperature degree.

reduce processing temperature degree.

reduce and holding pressure pressure.

喷砂处理B semi 模.

increase demolding dimensions.

increase demolding amount.

increase processing parts 拔模斜 degree.

设置空 gas demolding.

color non-uniform

dispersion process defect.

improve/increase back pressure and / or screw speed.

will masterbatch material 载体改 is melting point relatively low material.

污染.

检查 recycling material is dry 净.