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The heating temperature is too high; the heating time is too long;the compressed air contains moisture; the preform is opaque; the preform design is unreasonable; the blowing ratio is incorrect.
1.Reduce the temperature;
2.Shorten heating time;
3.Remove water with a dryer;
4.Improve the quality of preforms;
5.Improve preform size design;
6.Reduce the diameter of the preform.
The stretching rod is not in the center of the preform;the blowing hole is not in the right position, the hole size is different; the stretching ratio is too low or the blowing ratio is too small;the preform does not rotate during heating; the preform wall thickness is not uniform or the injection preofrm density is not uniform.
The temperature is not enough；the delay stretching time is too long，The stretch ratio is too large；the bottom of the bottle is too thin；stretching rod head too sharp .
Install bottle mold
Install bottle mould