Shanghai Daoqin Plastics Co., Ltd.

due to plastics additives 析出而 in mold or pressure and other surface upper formed material, is mold 积垢, this

usually to pressure processing process belt/tape very large 困扰, it formed color color issues, in or injection shot

molding processing 时, formed machine surface color 附, processing 彻底失败. if 他们尚未掌握

more has 效 清 remove methods, processing usually 不 不花费 a large amount of time and force, remove this 污垢. 　　

　　 mold simple design has 助于一边运转 production 线一边清 remove mold 积垢. can through 改变

extrusion type 材脱离 mold degree 改变积垢 in mold upper distribution, has mold 清洁. mold 积垢

也 can can is as has in product upper, to production lower again 进行进一步 清 remove as. sheet/plate

材 production process in, machine 械配备 has 自动刮削 device, can has remove this 积垢. 　　

　　但 is, 无论哪 types methods, remove this 积垢, need production 商付出 high 昂 停工代价. in 模

tool export using/adopting demolding agent or silicon can has reduce generate frequency rate, long machine need cycle

. decrease speed machine can reduce rate, this effect/influence machine output/production volume. has this methods 都治

标不治本, will is large introduction more good 积垢清 remove solution methods. 　　

　　 mold causes and mold export force has 关. resin mold inner surface slow flow, in

流出 mold 时会突然 accelerated flow. this type of accelerated in melt inner generate strong/high large force. this 一

应 force, low molecular weight polymer separation and melt other separation separation 离, 并堆积 in mold export 处. therefore, solution

solution/scheme decrease/reduce mold export 处 应 force or decrease/reduce melt inner polymer separation molecular weight 差距. this and to

for processing process, material or mold design 改进. improvement processing process 　　

　　 improve/increase mold and melt temperature degree is decrease/reduce mold export force types methods, generate its it issues

, material degradation, melt inner low molecular weight separation increase. therefore, melt and mold temperature degree 变化应

separation 开进行考 amount. also has types can can is, mold temperature degree reduce can can make mold inner surface generate cold 树

脂层, it toward mold export flow speed degree slow, due to speed 差异, cold resin and hot resin 流

separation 离, from formed 积垢. 　　

　　首先, melt temperature degree, rear based on melt temperature degree design mold 形状. in this 里, standards melt

hot electrical 偶往往不够精确, therefore using/adopting 手动检查熔 melt temperature degree methods. this although has difficult, is

remove mold phenomenon, it value 一试. in addition, mold export surface temperature degree need ratio mold temperature degree

low, need using/adopting surface hot electrical 偶 检查 mold export temperature degree. 　　

　　 in mold export using/adopting machine, can has 效帮助 decrease/reduce and control generate. 鼓风口应该 is rod

type, and pressure outer 形一致, using/adopting 钻孔吹出 pressure shrink gas. machine can will 任何烟雾状 material and

can pressure shrink material belt/tape mold, this type of methods benefits is meanwhile, can cooling mold 积垢,

make its easy by oxidation dark. nitrogen can used for anti oxidation, need small control force degree or can degree

cooling mold, is this can can effect/influence pressure type quality. improvement material different material can generate different type type

mold 积垢, from thin easy flow to thick soft. thin easy flow can can low separation polymer

组 separation formed, it in mold export 处挥发并沉积于 mold surface. thick soft 积垢则往往 is 由熔

体 internal local foam formed, material between issues, or mold inner force high. in this 里, 需

need resin inner is has more water separation and resin is degradation 退化, and melt fracture, or 通风不够

充 separation. 　　

　　一 supply provide resin ratio its it more easy 发生积垢 issues, to currently is 止, market upper 树

脂 also has full specifications. if mold phenomenon, can using/adopting 另一家同 grade supply

商 材 material. if 发现积垢 phenomenon in using/adopting new material rear to improvement, can will 信息通报原 resin 供

应商, versus 信他们会 very has 兴趣 听取 and analysis material can can in property can issues, force solution. 　

　　 different supply provide resin low viscosity can can relatively is 接近, tensile viscosity very different. if 没

has other property can 差异, testing tensile viscosity. tool has relatively high tensile viscosity resin in processing generate 积垢

issues can can property relatively large, this it in mold export 处 应 force more high 缘故. 　　

　　离模膨胀 rate high resin has 时积垢 rate relatively high. narrow molecular weight distribution resin tool has relatively low 离模

膨胀 rate, is this 并不意味 积垢 can can property relatively low. is, narrow molecular weight distribution resin 往往不 easy

于 processing, is it easy formed a large amount of low molecular weight separation separation, this also can can add mold

积垢 phenomenon. 　　

　　 processing positive force using/adopting chemical methods testing mold 积垢程 degree. recycled waste material in front 处

理 process in thermal degradation, generate a large amount of low molecular weight separation. add can decrease/reduce degradation additives

or can polymerization degradation separation expand agent can can for improvement has 帮助. if this methods 都行不通,

that can will material again to 别人. 　　

　　 has 时, use lubricated can has reduce 积垢. use more, also can can increase rate. different 组

formed separation between chemical versus property in this 里也起 to important function. 例如, versus polymer melt 一

起 mixed combined, generate heavy mold phenomenon. in this type of lower, utilizing increase agent can to 一定

understanding. can add a small amount of fluorine polymer processing additives, decrease/reduce mold export force. 　　

　　 certain type type mold 积垢会迅 speed oxidation, formed color or black. add resistant oxidation agent can solution

this issues. although can solution mold issues, it can make in pressure type or molding product upper

不 that obvious, from decrease/reduce for formed product quality effect/influence. improvement mold 　　 in mold surface coating fluorine poly

combined material anti mold 积垢, PTFE, already 取 一定 formed 功. more is has methods is metal coating

层, combined mold internal coating fluorine polymer, can decrease/reduce mold export 处 应 force. 　　

　　口模 runner design already formed used for research mold export 处 应 force and assessment pressure export 几何形状

变化. through improvement mold export structure decrease/reduce force will is future development new 课题. 　　　

　　一 processing and resin production 商 口模 runner design already obtain patent. through mold export 改

善积垢 phenomenon can can 形状包括, 方形, export, semi 圆形, toward outer 敞开 梯口, toward inner 梯

口, toward outer 展开 裙状 export. 　　

　　 increase large mold 刃口斜 degree can has decrease/reduce 膨胀. or 者, large mold cavity mold can decrease/reduce mold export 处

force, rear again will pressure type 材切割 formed dimensions.