Shanghai Daoqin Plastics Co., Ltd.

        断 strip/profile

        1, raw materials has material, lower material material material in is has material.

        2, defect, improve/increase processing temperature degree. (for/regarding glass fiber reinforced composite/compounding material 而言, is due to temperature degree high 引起.)

        3, true force degree 不够, true 空 运转 is good, is to requirements;密封 is to requirements

        4, 滤网堵塞, 换 滤网.

        5, 口模孔数不 for, material 流失衡.

        6, add more sheet/plate (glass fiber (GF) type product remove outer), melt 扰动而造 formed strip/profile, strip/profile main/primary in in left 侧.

        7, extrusion pressure low, screw inner material material 不充实, improve/increase material frequency rate, add large 滤网目数.

        冒 material: separation is has material material, good material material

        没 has material material

        1, reduce material amount or reduce screw speed.

        2, rise high front temperature degree, add fast material material in machine in 塑化;如 reinforcement material glass fiber (GF) front rear adjustment: and its 熔化区 temperature degree improves 5-10℃, will 玱纤口 rear add hot temperature degree 适当调 low 10-20℃.

        3, adjustment front screw combined, make front rear balanced add fast material material in machine in 塑化.

        塑化 good material material

        1, material large; reduce material frequency rate.

        2, true cover/cap 开口.

        3, machine sheet/plate 出现炭化, filling and other phenomenon;清理 machine 头.

        4, screw 排列错误(ratio toward block 位置不排 gas 口 位置 于接近, generally need 间隔一 螺纹 距离).

         appearance

        1, pellets has issues.

        两端都 has 孔: material low separation material water relatively more, true gas dry raw materials low separation water formed separation relatively more. has has 孔: material low separation material water relatively less, has requirements can 接受.

         solution: front 处理(drying, and other); add strong/high true gas (meanwhile need to screw design); improve/increase water temperature degree.

        2, pellets foaming

        出 high, raw materials formed separation separation understanding and other.

         raw materials water separation high; raw materials (relatively off-brand material)不 resistant temperature or formed separation use 不当, versus chemical reaction 而发;

        现 more 孔, or surface coarse true degree 不够; temperature degree.

        3, pellets surface light slip issues.

         pellets surface light slip 平整, need use Raw Materials formed separation —— glass fiber (GF), machine material, surface relatively coarse flame retardant and other material 质. versus ratio for lower, material batch has 差异, causes has:

        1) non-uniform ——数 amount more? time short? machine?

         processing temperature degree 不够, 塑化不 good;

         screw combined combined 理戒转 speed low, 剪切不够, material material 熔化不 good;

         lubricant more processing 特征特殊(如 slip, low melting point), material material surface slip 剪切无效;

        2) machine issues, 如模孔不平整, light slip and other;

        3) raw materials formed separation versus property good (也包括 color powder masterbatch in inner), delamination, and other.

        4, 粒径

         long short basic 一致(has long 粒, short 粒)

         material strip/profile 交叉迚入 pellet cutting machine; material strip/profile 交叉迚入 pellet cutting machine; pressure 辊太松(pellet cutting machine gas pressure);

        切刀锋利 degree, adjustment 切刀刀距, and 花键轴间隙.

        5, long strip/profile

         long degree large standards 粒径2倍 above water separation adjustment (especially is 5000 system, water separation more material strip/profile has slip 手感) pressure 辊太松(pellet cutting machine gas pressure);切刀锋利 degree, adjustment 切刀刀距, and 花键轴间隙. or already heavy abrasion loss, need more 换.

        6, powder 末

         use dry 净 手抓一 material 粒放开 rear 看手掌 upper powder 末适当 less water, adjustment strip/profile temperature degree 动刀锋利 degree, and 滚刀 间隙(0.07-0.15MM间), reinforcement product true true defect.

        7, adhesion, scorching/burn marks water less pellet cutting machine fast

        无吹风 machine, 戒者吹风 machine force low.

        8, 连粒, viscous strip/profile temperature degree high

         adjustment water long degree, adjustment pellet cutting machine speed material strip/profile in water 时即交叉 viscous 连, or material strip/profile 交叉进入 pellet cutting.

        9, 尾巴切刀不锋利

         pellets 本身存 in cracks

        10, iron 锈

         pellets surface has color material 质, main/primary is material strip/profile water separation more, dry 丌够导致 pellet cutting machine inner tool 生锈 致. decrease/reduce water, add more 风刀数 amount (戒者 add large force degree).

         black spots

        1, pellets surface has can black spots

        清洗 machine dry 净; true 空口, glass fiber (GF) 口, upper, sheet/plate upper 残留, 滞留, high temperature material material belt/tape 入; temperature degree high screw, inner material material 炭化; flame retardant high temperature separation understanding, 炭化; color powder dispersion defect

         Raw Materials and other grade 不够, black spots more;

        2, color /黑, strip/profile /油污 pellets:

         true inner material 掉入;模头, machine 头, sheet/plate upper material 质炭化; flame retardant separation understanding, 炭化;停 machine time long material material separation understanding; material strip/profile 经区域油污 viscous 附;

        3. pellets surface has can black spots water is 否清理 dry material 筒, material 斗, 振动筛 and other 未清理 dry ring in black spots is material material in machine in 炭化导致, this machine in 玱纤口 and true 空口处 has material material, need glass fiber (GF) and true 空口, also has is and sheet/plate has material material, need lower 口模清理.

        3, pressure unstable 而导致 black spots

        A, formulation in has types MI different material material 时, screw design according to most low viscosity material material, and versus for most strong/high 剪切

        B, 定期清理筛网, gas 口, true 空口, screw

        C, selection low friction coefficient coating screw

        D, melt 泵