1. Mold is not well polished, bone and tendon are too rough, product is not smooth out of mold and sticks to mold.

2. Mold product has insufficient mold release angle and sticks to mold.
3. Front mold adhesion of product is greater than rear mold, and it sticks to front mold.
4. Mold core is eccentric, mold is not smooth out and sticks to mold.
5. Mold water cooling is not good, mold is too hot and sticks.
6. Nozzle of mold is too hot, and water is not cooled, so it sticks to water outlet.
7. Core is pulled, position is burned, and it is not in place, which jams product.
8. Temperature control of hot nozzle of mold hot runner is inaccurate, temperature is too low, and water outlet is sticky.
9. Mold nozzle has a cap, nozzle cannot be pulled out, and it is broken.
10. Mold nozzle is deformed, or there is an undercut, or it is too rough.

1. Injection molding is too full and sticks to mold.
2. Holding pressure is too high, product sticks too tightly and sticks to mold.
3. Holding time is too long, product sticks too tightly and sticks to mold.
4. Ejection speed is too fast, bone and tendon positions stick to mold.
5. Barrel temperature is too high, material decomposes and becomes brittle, and mold sticks.
6. Plastic stays in barrel for too long, material decomposes and becomes brittle, and mold sticks.
7. Mold temperature is set too high, and product sticks to mold.
8. Injection molding cycle is improperly set and sticks to mold.
9. Temperature of nozzle and hot nozzle is set too low, and nozzle sticks.
10. The first stage mold opening speed is too fast, product sticks to front mold or sprue is broken.
11. Mold temperature is not raised well, mold is too cold, bone position and sprue are stuck to mold.
12. Melt back pressure and injection pressure holding are not set well, there are bubbles at sprue, and it sticks to front mold.
13. For some products whose front mold area is larger than rear mold area, filling lacks glue and will stick to front mold. Glue amount of product should be calculated during beer test. Especially for some products with etched front molds and cylindrical products.
14. For some products that use push plates to eject mold, glue amount should also be calculated. Filling lacks glue and product will not be ejected and stick to rear mold.

1. Demoulding form is improperly designed, and ejector is set to eject mold when push plate is used.
2. Ejector is too small, ejector is high and penetrated.
3. Ejector head is not etched, ejector penetrates and sticks to mold.
4. Core pulling and design stroke of slide position are not enough, and product is stuck.
5. Parting line is not set properly, front mold has strong adhesion, and front mold is stuck.
6. Main nozzle and needle point water inlet are too long, injection pressure is too large on it, mold is stuck and water outlet is broken.
7. Diving angle is too large, mold is pulled out, water outlet is broken and mold is stuck.
8. Diving and needle point water inlet are too small, injection pressure is too large on it, mold is stuck and water outlet is broken.
9. Ejector position is not designed properly, product is unevenly stressed, and product cannot be ejected.
10. Cooling water channel position is improperly set, or there are not enough, especially raised mold male, mold is overheated and stuck.
11. Water outlet of transparent products, especially PS, AS, PMMA, and PC, must be designed to be: round, thick, short, and the runner is smooth without sharp corners.
Standard sprue of lens▼

 

1. Machine hinge is unbalanced, and product sticks to front mold.
2. Ejection is unbalanced, and product sticks to back mold.
3. Nozzle R and nozzle R do not match, sprue is not smooth, and sprue is broken.
4. Nozzle heating ring is burned out, does not heat, and sprue is stuck.

1. Material is too brittle, sticking to mold and breaking sprue.
2. Material performance is too sticky, and material is not good.