The bottleneck is skewed,
1. Blocked oil passages to clear the body
2. Stretch rod vent hole plugging
3. Damaged nozzle seal Replace nozzle seal
Center deviation
1. Pre-inflation pressure is too high to reduce pre-inflation pressure
2. Pre-blowing flow too much reduces pre-blow flow
3. Pre-blowing position is too early to delay the pre-blowing position
4. Stretch bar bend replacement stretch rod
5. The stretch rod is too big from the bottom mold to adjust the stretch rod gap
6. The preform temperature is too high to reduce the preform temperature
Bottom deformation of the bottle
1. The oil temperature of the bottom mold is too high to reduce the oil temperature of the hot oil machine
2. The bottom mold blow valve is damaged. Replace the bottom mold blow valve.
3. The preform bottom temperature is too high to reduce the preform bottom temperature
Bottle bottom fold
1. Pre-inflation pressure is too small to increase pre-inflation pressure
2. Pre-blowing flow is too small to increase the pre-blowing flow
3. Pre-blowing too late
Hard neck
1. Insufficient neck heating increases neck heating
2. Pre-inflation pressure is too low to reduce pre-inflation pressure
3. Pre-blowing air flow is too big to reduce pre-blowing air flow
4. Pre-blowing too late to delay pre-blowing
5. The furnace position is too high to adjust the furnace position
6. Stretch rod speed slow repair stretch cylinder
Poor mold forming
1. Mold compensation seal ring damage compensation seal replacement
2. Improper mold clearance adjustment
Wall deformation before irrigation
1. The cooling air blowing time is too short to extend the cooling air blowing time
2. The die temperature is too high to reduce the die temperature
3. There is no cooling gas in the stretching rod to blow out the inspection extension rod blowing system
Wall deformation after irrigation
1. Mold body temperature is too low to increase mold hot oil temperature
2. The preform temperature is too low to increase the preform temperature
3. Cooling blowing time is too long to reduce cooling blowing time
4. The uneven plastic distribution adjusts the blowing process to evenly distribute the material
5. Hot oil flow is too small to clear the oil circuit and clean the oil filter
High shrinkage
1. Mold temperature is low to increase mold temperature
2. The preform temperature is low to improve the preform temperature setting
3. Cooling blowing time is too long to shorten cooling blowing time
4. The oil line is blocked to clear the oil circuit
Large or small diameter
1. Improper setting of cooling air blowing time
2. The uneven distribution of plastics adjusts the process to evenly distribute the material
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