Frequently asked questions about blow molding

5. Fracture
The tendency of plastic components to break or crack under certain abnormal environmental conditions, and sometimes the edges of the components can be damaged.
Machine:
Incorrect blow molding screw design.
The blow molding cycle is too short.
3. Improper and incorrect nozzle selection.
4. The injection pressure is too high, and the screw speed or blow molding speed is too fast.
5. The melt temperature at the nozzle is too high
6. The blow molding pressure is too low.
Mold:
1. Water inlet design limitations.
2. Condensation of rubber in the flow channel
Material Science:
1. The melt temperature is too low
2. The rubber particles are too wet
3. The performance of the rubber particles has been degraded.
Brewery: The blow molding cycle is inconsistent.
6. Bubbles
The enclosed gas zone within a plastic component, which is different from the evidence of bubbling on the surface, is often caused by the enclosed gas or air bag, but may also be caused by shrinkage.
Machine:
1. The blowing temperature is too high.
The blow molding pressure is too low.
3. The glue injection time is too short.
4. Failure to timely supplement materials.
5. Incorrect melt temperature adjustment.
6. Excessive glue injection speed.
7. Abnormal blow molding pressure.
Mold: Wet inside the runner.
Brewers: Inconsistent blow molding cycles.