PET one-step bottle blowing machine working principle and characteristics
PET one-step bottle blowing machine is a two-way stretch blow molding process, in this process, the PET chain is two-way stretch and arrangement, orientation, thus increasing the bottle wall mechanical performance, can improve the tensile, tensile, impact strength, and has excellent air tightness. Although stretching helps to improve the strength, but also cannot too stretched, to control a good stretch blow ratio. Bottle blowing is between the glass transition temperature and crystallization temperature, usually operate between 90 ~ 120 degrees. PET show is within the range of the high elastic state, blow molding, cooling rapidly after setting into a transparent bottle. Tensile & ndash; blow molding process are: A blow & ndash; Second blow, three action time is very short, but be sure to cooperate well, especially the former two step determines the overall distribution of material, by the quality of bottle blowing. Thus to recuperate good: stretching start timing, stretching speed, blowing the start and end time, air pressure, blowing air flow, etc, be like likely, can operate bottles billet temperature distribution of the whole, bottle preform, both inside and outside wall temperature gradient. In the process of blow molding, cooling rapidly, bottle wall inside the induced stress occurs. For filling bottles, it can be resistance to internal pressure, merits, but for PET bottle bottle blowing machine have to make sure it high above the glass transition temperature for free. PET one-step baked road and bottle blowing bottle of bottle blowing machine characteristics of the platform space, reduces the open mold time, improve the efficiency of the bottle blowing, at the same time increased the production. 1. Compact appearance design to reduce the space, reduce the production cost, enhance the competitiveness. 2. Automatic operation system. 3. The advanced control system, simple and convenient control panel. 4. Simple linear operation system independently. 5. Characteristic of the heating system, temperature control precision, mediation is simple. 6. Special storage device. 7. PET bottle blowing machine cooling system can reach ideal cooling effect. The raw material of PET, PET raw white or light yellow, highly crystalline polymer, creamy appearance with light. In a wider temperature range has the excellent function of physical machine, used for a long time temperature can reach 120 ℃. Electrical insulation is better, until under high temperature and high frequency, the motor can still work normally, but the corona resistance is poorer, creep resistance, fatigue resistance, frictional resistance, size standard is very good.
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