Prior to stretch blow forming, PET bottles should be heated by the heating system first to have the PET preform get certain temperature first. Thus, heating system is crucial to the PET blow molding machine.
PET preform temperature rises up because it absorbs heat form IR of quartz tube; the heating distance is adjustable to meet the production of diverse bottle types. The height of heating oven is adjustable for best fit while PET preform height changes.
（Extended Reading： Introduction on PET Material and Usage）
When the design of entire heating system is complete, test it by instruments; observe if it holds the planned functions. If PET preform temperature isn't at the one suitable for stretch blow forming, the stretch blow quality will be bad or bottle is broken. Therefore, use IR sensor to detect PET preform temperature before forming, send the detected data back to a controller to change the output voltage and control IR tube power (watt) to change PET preform temperature.
During the stretch blow process of PET preform, to avoid neck being deformed from heating that causes PET bottle neck unable to be locked tight or gas-leaking, it normally PET blow molding machines will perform neck-protection during the heating process; such as: equip the cooling water runway, blow air to the rotary seat or shield the neck, etc.
Different machines will have different PET preform heating oven structure design ideal, which thus can make the most suitable design of heating system. As the biggest PET blow molding machine manufacturer in Taiwan, CHUMPOWER has over 20 years rich manufacturing experience from design to bottle blow, from preform/mold design to overall plant production line planning.
CHUMPOWER can provide clients the completed services of cost-effective and productive PET blow molding machines Phoenix Series, high productivity PET blow molding machines L Series, and high texture solution PET blow molding machines One-Stage series to fully satisfy client's requirements; with complete pre-sales counsel and post-sales services that earns extremely high reputation in the field.
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