Bottle blowing is between the glass transition temperature and crystallization temperature, general control between 90 ~ 120 degrees.
PET show is within the range of the high elastic state, blow molding, cooling rapidly become transparent bottle after setting.
In step method, the temperature is determined by the cooling time length in molding process (
Such as aoki bottle blowing machine
, so be well matched note & ndash;
The relationship between the two stations.
Bottle blowing machine is a process of two-way stretch blow molding process, in this process, PET chains are arranged two-way stretch, orientation, and, thus increasing the bottle wall mechanical performance, can improve the tensile, tensile, impact strength, and has good air tightness.
While stretching helps to improve the strength, but not excessively stretching, to control good stretch blow ratio: radial not more than 3.
Five to four.
2, the axial not more than 2.
8 ~ 3.
The bottle preform thickness not more than 4.
bottle blowing machine has become a standardized way of dealing with pet bottle making machine manufacturers.
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