Shanghai Daoqin Plastics Co., Ltd.

1  formed product deformation

can can causes : 1, cooling time short, formed product can cooling; 2, mold opening speed degree fast, strong/high deformation; 3, product has defect; 4, mold temperature high, formed product cooling to 位.

solution methods : 1, long cooling time; 2, decrease mold opening speed degree; 3, mold; 4, reduce mold temperature.

2 射纹

can can causes : 1, speed fast, mold cavity inner gas method 瞬间排出; 2, raw materials has water separation; 3, molding temperature degree high, raw materials high temperature separation understanding; 4, material tube/pipe inner has gas 进入.

solution methods : 1, reduce speed, make mold cavity inner gas 顺利排出; 2, material; 3, reduce formed type temperature degree; 4, reduce material tube/pipe rear temperature degree, improve/increase pressure.

3  flash/burrs

can can causes : 1, pressure large, separation force large clamping force, construction start 模; 2, pressure and holding pressure high; 3, speed fast, material temperature high; 4, mold gas 孔堵塞.

solution methods : 1, reduce pressure, increase clamping force; 2, reduce pressure and holding pressure; 3, reduce speed and material temperature; 4, mold.

4 充模不足

can can causes : 1, pressure 不足, speed slow; 2, molding temperature degree low, runner small; 3, mold cavity inner gas can full 排出; 4, injection shot time short and injection shot amount 不足.

solution methods : 1, improve/increase pressure, speed; 2, improve/increase molding temperature degree, runner; 3, increase gas 孔; 4, long injection shot time increase injection shot amount.

5 结 combined 线

can can causes : 1, pressure 不足, speed slow, gate and runner small; 2, molding temperature degree and mold temperature low; 3, combined 流部排 gas and has 溢流池; 4, use more demolding agent.

solution methods : 1, improve/increase pressure and speed, gate and runner; 2, improve/increase temperature degree, increase back pressure or add fast screw speed; 3, combined increase gas and increase 溢流池; 4, decrease/reduce use demolding agent.

6  formed product gloss degree 不佳

can can causes : 1, speed slow, pressure 不足, mold temperature low; 2, mold cavity inner has water gas or has 油脂污染; 3, mold surface abrasion or gate and runner small; 4, injection shot amount or raw materials in has water separation.

solution methods : 1, improve/increase speed, pressure, mold temperature; 2, scratch dry 净; 3, mold; 4, improve/increase pressure, speed, long injection shot time or material.

7 流纹

can can causes : 1, pressure high or low, speed fast or slow; 2, holding pressure time short or gate small; 3, mold temperature and gate temperature degree low 4材 material melt 不佳.

solution methods : 1, adjustment 适当 射 pressure and speed; 2, increase holding pressure time or add large gate; 3, improve/increase temperature degree; 4, improve/increase temperature degree, improve/increase back pressure or add fast screw speed.

8, formed product 出模破裂

can can causes : 1, material temperature low or mold temperature low; 2, demolding degree or ejection methods 不当; 3, gate small; 4, demolding 角不足.

solution methods : 1, improve/increase temperature degree; 2, mold; 3, mold; 4, mold.

9, extrusion formed product surface coarse 糙

can can causes : 1, molding temperature degree low; 2, mold temperature low.

solution methods : 1, improve/increase temperature degree and improve/increase screw speed; 2, improve/increase mold temperature.

10, extrusion formed product surface has block 状

can can causes : 1, material tube/pipe 未清理 dry 净, has material; 2, add material masterbatch 载体未按 requirements.

solution methods : 1, material tube/pipe; 2, versus masterbatch.

11, extrusion amount 不够

can can causes : 1, material tube/pipe temperature degree 不够; 2, has material or screw speed rate low.

solution methods : 1, improve/increase 模头; 2, 清理模口 or improve/increase screw speed.

12, extrusion formed product 出模膨胀

can can causes : 1, temperature degree low or screw speed fast; 2, material fast.

solution methods : 1, improve/increase temperature degree; reduce screw speed; 2, adjustment material plant/unit.

13, extrusion generate a large amount of gas 体

can can causes : 1, melt temperature degree high; 2, material tube/pipe inner has material.

solution methods : 1, reduce melt temperature degree; 2, material tube/pipe.

14, extrusion formed product has 凹点

can can causes : 1, raw materials has water separation; 2, melt temperature degree high, screw speed fast.

solution methods : 1, material; 2, reduce melt temperature degree and screw speed.