Shanghai Daoqin Plastics Co., Ltd.

当 filler masterbatch formulation 确定之 rear pelletizing process is masterbatch quality good bad important factors. material is: separation 拣-- powder 碎--清洗--晾 dry -- extrusion pelletizing, generally mono machine
做 new material modified: material （ Color Matching, additives and other ）---搅拌-- extrusion -- cooling -- pellet cutting. generally use di machine

    （1） add hot temperature degree add hot temperature degree 取决于载体 resin soft or melt temperature degree, resin soft or melt temperature degree high, add hot temperature degree 也就越 high, generally high resin melt temperature degree 5℃ left right. add hot temperature degree low resin can separation 熔化, has 限 载体 resin 也就无 method will machine powder full 包覆, masterbatch surface coarse pellets in 间出现空洞, resin and machine powder method formed uniform system. add hot temperature degree high, additives easy 挥发样, screw force reduce 不宜塑化, effect/influence masterbatch quality. generally lower, temperature degree is pelletizing most high temperature degree, ratio temperature degree low 10℃ left right, 三区, temperature degree and basic same, from 五区开始直至 machine 头按5~10℃ 梯 degree reduce.

    （2）主 machine speed for/regarding specifications di screw extrusion machine, machine speed 决定于 output/production volume, machine speed high, output/production volume large. 实践证明, for/regarding di screw extrusion machine 说, non output/production volume large good, generally control in machine most high speed 60~70% is 宜. speed large, material in screw in time small, 自然也就塑化不 good. machine speed also and material machine speed and pellet cutting machine speed versus 匹配, 否则会出现冒 material or pellets large or small and other phenomenon.

    ------ this 里也不 is simple machine speed or 者 喂 material speed mono issues. macro upper 讲,主 machine speed material material from machine screw speed degree,而 喂 material screw speed 则反映 喂 material screw toward machine screw material material speed degree. therefore this 里讲究 is material screw speed and machine screw speed is 否匹配 issues.

    1, material screw speed versus for machine screw speed small 时,主 machine screw in material material has full screw 间隙,主 machine screw in, material material versus for less, negative small, this material material in screw in is types low pressure 剪切,达不 to good dispersion 效果.(由此 can 看出, filler dispersion not only and small separation dispersant has 关系,实际 upper and production process and mixed material process and other factors 都密切 related.)

    2, material screw speed versus for machine screw speed large 时,喂 material screw to machine screw in material,总 is and by machine screw 传送出, water cold again pellet cutting,于 is machine screw in saturated and, and 传送出 material material in large pressure, pressure function lower,四处冲撞,寻找 breakthrough 口, this 时候就会 from glass fiber (GF) or true in 溢出,造 formed glass fiber (GF) material or material,甚至 true 空堵塞.

    generally lower, control machine speed in most high speed 60~70% is 宜, this upper is high machine speed is 1 情况,而 low machine speed is 2 情况, this 实际都应视 is production 异常, its in can can also and to other issues, ratio high speed (100% 主 machine most high speed), machine high negative 荷运转, can can reduce machine use lifespan and other issues.

    （3） water and true use water is use adjustment screw temperature degree plant/unit, remove non certain 一区域 temperature degree high, generally lower can can water 阀, can electrical consumption, need temperature degree adjustment combined 理, water can use.

    true is use troubleshooting low 挥发组 separation plant/unit, generally used for grafting reaction or powder filler masterbatch production. for/regarding production machine powder filler masterbatch 说, most good use or less use. true easy will material material in additives 抽走, effect/influence masterbatch in resin in dispersion or processing molding.

plastics pelletizing process tips/techniques 一: pellets surface gloss degree and degree

塑化 defect, pellets hydrophobic 松: surface gloss is is pelletizing temperature degree and cooling water temperature degree control 不当, this requirements understanding plastics pelletizing process process in pelletizing temperature degree.

plastics pelletizing process tips/techniques 二: 学会听声音

进 material speed degree fast slow and temperature degree high low 变化, machine 发出 声响都 has very large different. this need in in 不断摸索, need force let machine maintain in most 佳时 声音状态 in, this can ensure plastics pelletizing process more add 完美.

plastics pelletizing process tips/techniques 三: 学会看 material

看 from machine material non important, is this is causes key/critical. has material, temperature degree low, must add temperature; has material, temperature degree high, must drop temperature and other and other.

总之 in plastics pelletizing process in more more more 摸索, can issues and positive. 不断掌握 plastics raw materials plastics pelletizing process tips/techniques, improve/increase plastics industrial development.