1. Being lack of materials cause rugged joint

reason

low injection pressure

low injection speed

Die Cavity exhaust poorly

Inlet plug

short time of injection

Injection nozzle leak glue

 

2. Rugged sides

reason

High injection pressure

Die locking mode is not strict and the clamping force is too small

The combination of mold and seal is not strict and the mold has debris or template deformation

Die binding positions defect

 

3. Bubble and plastic raw material is humid

reason

Plastic raw material is decomposed

Forming temperature is too low

Bad weld joint

Plastic materials are mixed with impurities

The plastic thickness that surrounds the embedded parts is not enough

Mold temperature is too low

The water level of design is unreasonable

Plastic raw material is humid

 

4. Connecting line
reason

Too low temperature

Material temperature is too low

The size of water entrance is too large

 

5. Raw material waste

reason

Plastic raw material is decomposed

Clash of plastic raw material into plunger and barrel

The plastic material is contaminated or brought into the impurity

Uneven particles of plastic materials

Die Cavity exhaust poorly

 

6. Deformation

reason

The mold temperature is too high and the cooling time is not enough

The wall of the products is thick and thin

Improper position of the top needle and uneven force

The mold cavity is not smooth, the demoulding is not smooth and the friction is great