Exclusion of bottle blowing abnormalities

Common faults and removal methods of linear blow molding machines
Fault 1: Poor transparency of PET bottles
Reasons: 1. The heating temperature is too high. 2. The heating time is too long. 3. The compressed air contains moisture. 4. The injection molding embryo tube itself is opaque.
Elimination methods: 1. Cool down 2. Shorten the heating time 3. Use a dryer to remove water 4. Improve the quality of the embryo tube, select materials and improve the dryness of the raw material 5. Improve the size design of the embryo tube 6. Reduce the diameter of the embryo tube

Fault 2: Pearly whitening appears in PET bottles
Reasons: 1. The heating temperature is too low. 2. The wall thickness of the embryo tube is uneven. 3. The thickness of the embryo tube is too thick, and the heating and penetration are insufficient.
Elimination methods: 1. Increase the temperature or slow down the revolution speed 2. Improve the quality of the embryo tube 3. Reduce the thickness of the embryo tube, or try to raise the cover of the heating device to increase the surface temperature of the embryo tube.

Fault 3: The position of the water outlet at the bottom of the PET bottle is offset
Reasons: 1. Start blowing time too early 2. The stretching rod did not go down to the bottom 3. The centerline of the stretching rod and the bottle shaft is offset 4. The wall thickness of the embryo tube is uneven or the injection density is uneven 5. The heating is uneven
Remedy: 1. Delay the blowing time or increase the descending speed of the stretching rod 2. Adjust the position of the magnetic pole switch 3. Adjust the position of the stretching rod 4. Improve the quality of the embryo tube 5. Improve the heating conditions, or check whether there is a problem with the embryo tube rotation

Fault 4: Uneven wall thickness of PET bottles
Reasons: 1. The position of the stretching rod is not in the center of the embryo tube. 2. The blowing holes are asymmetric and the diameter of the hole is different. 3. The stretching ratio is too low or the inflation ratio is too small. 4. The embryo tube does not rotate in the heating furnace. 5. The embryo tube wall Uneven thickness or injection density
Elimination methods: 1. Adjust the position of the stretching rod 2. Adjust the position and diameter of the blowing hole 3. Increase the stretching ratio or inflation ratio 4. Check the rotation device 5. Improve the quality of the embryo tube

Fault 5: The upper part of the bottle is too thick
Reasons: 1. The temperature of the upper part is too low. 2. The position of the mold exhaust hole is too far from the upper part. 3. The stretching ratio is too low. 4. The inflation ratio of the upper part of the bottle is too low. 5. The speed of the stretching rod is too slow.
Remedy: 1. Heat the upper part; 2. Adjust the position of the vent hole; 3. Increase the stretching ratio; 4. Change the shape of the bottle 5 . Adjust stretch rod speed