In the blowing process of the plastic bottle blow molding machine if the parameters are not set properly, the blown bottle will have various problems. The most common one is the bottom of the bottle sag of the PET blowing machine Now I will share with you the analysis and solution of the sag of the bottle blowing machine
The common causes of bottle bottom depression are as follows:
1. Insufficient material at the bottom of the bottle
Solution: lower the heating temperature of the bottom of the bottle
2. The bottom heating temperature is too high
Solution: Adjust the heating temperature of the bottom of the bottle to a suitable temperature. Different manufacturers have slightly different temperature adjustments. When adjusting the temperature, you can consult the blowing machine manufacturer
3. Insufficient pre-blowing
Solution: extend the pre-blowing time
4. Insufficient high pressure
Solution: increase the amount of high-pressure blowing