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Contact Information
No.69, Wu-Chuan 7th Rd., Wu-Ku Industrial Park, Taipei Hsien, Taiwan
Tel: 886-2-22980855
Fax: 886-2-22980655
P.E.T. Preform Injection Molding Machine
Model: LCH-D-P-P
Category: Plastic and Rubber Industry / Machinery for Processing Plastics / Plastic Injection Molding Machines for PET Preforms
Characteristics
P.E.T material has characteristics of good chemical effect tolerance, nice transparency, and satisfied the food safety grade standard, which has been used in many products, such as mineral bottle, fruit juice bottle, carbonate drink bottle..., etc. If it is used for cosmetic containers, it is better to use P.E.T.G. material since P.E.T.G has even better chemical effect tolerance. unlike for acrylic container, which the internal must fix with PP material container.
The biggest issue for P.E.T material is that it absorbs humidity from the air, therefore, one must dehumidify the material to be below 0.05%. Otherwise, the product will become easily destroyable with also crystal white finishing surface. Based on this issue, a P.E.T injection machine must come with a complete set of dehumidifier, which dries the air between -29 to -40 degree, and for dryer machine it's about 180XC. Furthermore, in order to prevent the mold gets sweaty, the mold must have dew preventing equipment, which normally uses cool air to blow, but sometimes using dry/hot air process system. The workshop should also include air condition and dehumidifier.
In order to improve the production efficiency and to prevent the beat break up, it is better to design the machine using double loop controlling type. That is, the mold can be opened during screw charging action to shorten the cycle time. Also, the mold side should be warped and dewy. Then, it is important to design the injection screw compression rate (L/D rate) to prevent heat break up from strong friction heat.
The process of making a the mold is also not a easy task, as it is difficult to make and expensive. Without skilled mold design and structure, many problem may occur. Therefore, one must purchase a full equipment set and complete setting and testing the mold to avoid trouble. Usually, a full set includes P.E.T injection molding machine, dehumidifier, hopper dryer, auto loader, water chiller, mold, conveyer belt transmission system and robotic arm..., etc. A blowing machine will be required on two step injection machine, but will not be required on P.E.T preform production; additional injection molding machine and bottle cap cutting machine will be required to produce bottle cap.
There are two types for P.E.T injection machine: single step type and double step type. For the single step type, the mold rotates 180 degree and blow the P.E.T preform after injection, before cooling down to make the P.E.T bottle. As for the double step type, the P.E.T injection machine makes the P.E.T preform first. Then, it moves the P.E.T preform to the blowing machine to be heated up and blow to P.E.T bottle. So, the double step requires a blowing machine.
Specifications
Specification: | H series are from LCH-H80 to LCH-H500 (specification chart); V series are from LCH-V100 to LCH-V850 (specification chart). |
Computer: | Compatible with D type computer. |
Hydraulic Circuit: |
Compatible with the followings: More compatible types available, please contact us for detail. |
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