Shanghai Daoqin Plastics Co., Ltd.

        (1) products outer structure dimensions 不完整

        ① 熔 material 塑化时 temperature degree low, improve/increase machine temperature degree.

        ② holding pressure pressure or holding pressure time comparison small, 应适当调 high, 观察效果.

        ③ injection material amount 不足, can can is screw outer abrasion loss heavy or is 逆止阀 function 失效.

        ④ nozzle and mold sleeve/set 口接触 defect, formed injection material more.

        ⑤ nozzle temperature degree low.

        ⑥ injection speed degree low, 应适当 improve/increase injection speed degree.

        ⑦ screw back pressure low, raw materials quality non-uniform.

        ⑧ mold add hot temperature degree low or 各部位 temperature degree 不均, temperature large, 应检查 add hot device is loss bad or 适当调 temperature.

        ⑨ 熔 material runner issues. runner temperature degree low, dimensions small or surface coarse and other.

        ⑩ products structure dimensions 安排不 combined 理, has 部位壁 thick dimensions small.

        (2) products outer dimensions unstable shrinkage phenomenon

        ① injection material pressure small, 应适当 improve/increase.

        ② holding pressure pressure low or is holding pressure time 不足.

        ③ machine temperature degree high, material 塑化时 temperature degree high, 应适当 reduce machine temperature degree.

        ④ screw back pressure low, formed material non-uniform, need improve/increase screw back pressure.

        ⑤ mold temperature degree effect/influence. 应适当 adjustment 并观察效果, main/primary is mold temperature degree high, increase drop temperature solid time.

        ⑥ nozzle small, 应适当 add large.

        ⑦ injection material speed degree slow, need adjustment improve/increase.

        ⑧ injection material amount 不足.

        ⑨ mold gate 位置布置不 combined 理.

        ⑩ products structure design combined 理, formed local force 不均衡.

        (3) products demolding difficult

        ① 熔 material injection pressure high, reduce injection pressure.

        ② 熔 material temperature degree high, reduce machine temperature degree or reduce screw speed.

        ③ raw materials water separation relatively high, 应进行 drying 处理.

        ④ mold temperature degree low or 各部位 temperature large.

        ⑤ mold molding products surface coarse 糙, demolding degree 不够, 应进行修 abrasion renovation.

        ⑥ holding pressure drop temperature solid time short, 应适当延 long drop temperature time.

        ⑦ demolding agent coating use amount or coating non-uniform.

        (4) products has flash

        ① 两 semi clamping 不严密 or combined coarse 糙, repair 改进.

        ② 熔 material injection pressure high, 应适当 reduce injection pressure.

        ③ clamping force 不足, improve/increase clamping force.

        ④ 熔 material temperature degree high, reduce temperature degree.

        ⑤ injection material amount more, adjustment reduce injection time, use material amount or injection speed degree.

        ⑥ molding mold temperature degree high, reduce mold temperature degree.

        (5) products demolding easy 破裂

        ① raw materials non-uniform, 应适当 improve/increase screw back pressure.

        ② molding mold temperature degree low, improve/increase mold temperature degree.

        ③ ejection as 位置不当 or ejection force 不均, 应找出破裂部位, adjustment ejection 杆 工 as 位置.

        ④ products mold demolding degree 不够, 应改进 mold, add large demolding degree.

        ⑤ products demolding has 部位出现 true phenomenon or mold structure combined 理, products local force in, heavy new design renovation mold.

        ⑥ 侧 slip block and mold opening as or ejection as 不协调, 应修改 mold.

        ⑦ molding mold surface coarse 糙, heavy new abrasion reduce molding coarse degree.

        ⑧ demolding agent coating or use amount 不够.

        (6) products surface has 熔接痕

        ① raw materials non-uniform, improve/increase screw back pressure.

        ② molding mold temperature degree low, 应适当 improve/increase mold temperature degree.

        ③ injection pressure and speed degree low, 应适当 improve/increase.

        ④ nozzle small, expand large 直径, increase mono time injection material amount.

        ⑤ 熔 material runner small, effect/influence amount, add large material runner 孔径.

        ⑥ raw materials in water amount high, raw materials drying 处理, make water amount small raw materials 允许含 water amount.

        (7) products surface has 波纹

        ① raw materials 塑化熔 melt non-uniform, 应适当 improve/increase machine temperature degree or improve/increase screw back pressure.

        ② mold temperature degree low, improve/increase mold temperature degree or 均衡各部位 temperature degree.

        ③ adjustment material injection pressure, injection pressure or high effect/influence products table/sheet quality.

        ④ holding pressure drop temperature solid time short, 应适当延 long.

        ⑤ raw materials in water separation high, for raw materials drying.

        ⑥ 熔 material injection speed degree combined 理, attention/notes injection speed degree fast or slow for products table/sheet quality has effect/influence.

        ⑦ mold molding surface coarse 糙, 应进行修 abrasion reduce its coarse degree.

        (8) products has bubbles or 银纹

        ① raw materials in water separation high, for raw materials 应进行 drying 处理, make raw materials water amount small 于允许含 water amount requirements.

        ② raw materials in add material high temperature resistance, more 换.

        ③ machine temperature degree high or raw materials in machine inner time long, reduce machine front temperature degree or use relatively small specifications injection molding machine.

        ④ screw back pressure small, 应适当 improve/increase screw back pressure.

        ⑤ holding pressure pressure low or holding pressure drop temperature time short. improve/increase holding pressure pressure, long holding pressure drop temperature time.

        ⑥ molding mold temperature degree low, 应适当 improve/increase mold temperature degree.

        ⑦ injection pressure high, reduce injection pressure.

        ⑧ injection speed degree fast, reduce injection speed degree.

        (9) products surface gloss good

        ① raw materials 塑化熔 melt quality 不均, 应适当 improve/increase machine temperature degree or screw back pressure.

        ② raw materials in water amount high, for raw materials drying 处理, make raw materials in water amount ultra- raw materials 允许含 water amount requirements.

        ③ molding mold inner surface coarse or has water 珠, 应进行抛 light 处理, improve/increase type surface light degree.

        ④ raw materials in add material add 不当, adjustment more 换.

        ⑤ raw materials 不清洁, has 杂质.

        ⑥ molding mold temperature degree low, 应适当 improve/increase mold temperature degree.

        ⑦ molding mold material runner, gate small, material flow retardant force large, mold gas defect, for mold renovation.

        (10) injection molding products deformation

        ① products structure design combined 理, and thick thin 安排不 for 称, 应改进 design.

        ② holding pressure drop temperature solid time short, long drop temperature time.

        ③ molding mold 各部位间 temperature degree 不均, temperature large, improve/increase temperature degree control property, make 各部位 temperature degree uniform.

        ④ ejection force non-uniform, adjustment ejection 杆 工 as 位置.

        ⑤ gate 位置安排不 combined 理, 应适当变动 gate 位置.

        ⑥ injection material pressure, speed degree high, 应适当 reduce.

        (11) products has black spots or strip/profile 纹

        ① machine 筒清洗不 dry 净, has separation understanding material, 应拆卸 machine 筒, 彻底清洗 machine and screw upper material.

        ② raw materials in has 杂质, 应检查 more raw materials.

        ③ nozzle small, gate small, material temperature degree high, injection pressure high, speed degree fast and other factors easy formed material temperature degree high 而变黄 or separation understanding, 应逐项 adjustment, 观察熔 material molding quality, fault/failure causes.

        ④ machine inner or nozzle has material 区, formed material separation understanding, black spots or strip/profile 纹, 应拆卸 machine 筒, nozzle, 找出滞 material 区, 并进行修 abrasion.