398Ton PET injection molding machine
2 month ago
Product details
Most PET preform manufacturers tend to focus merely on injection speed and clamping force parameters, while overlooking process consistency during long-term continuous production. Under 24-hour non-stop operation with multi-cavity molds, minor deviations in hydraulic response, template stress deformation and material conveying fluctuation will gradually accumulate, resulting in inconsistent wall thickness, poor transparency and reduced yield rate of finished products. Classified in the Special Injection Molding Machine Series, this model is developed to prioritize stable and consistent mass production performance. As reliable Plastic Machinery specially designed for large-scale production of beverage and daily chemical PET packaging products, it effectively solves the process drift issues commonly found on general-purpose injection machines during long-hour operation.
Built as a high-efficiency Servo Energy‑saving Injection Molding Machine, this equipment achieves energy optimization through systematic thermal balance control rather than simple power reduction. The PET molding cycle features an extremely long cooling phase. Conventional machines continuously accumulate hydraulic pressure and generate excessive heat during standby cooling, causing gradual oil temperature rise, inaccurate barrel temperature control and thermal degradation of PET materials. The servo control system of this model is recalibrated to adapt to the long-cycle characteristics of PET production. It intelligently reduces hydraulic output during cooling stages to stabilize system temperature, significantly cutting power consumption while eliminating process interference caused by temperature drift and minimizing repeated parameter adjustment work.
Final product quality relies not only on main machine performance, but also on coordinated operation of complete Plastic Auxiliary Equipment. PET is highly hygroscopic; insufficient drying will easily cause silver streaks, bubbles and internal cracks on finished parts. Equipped with a supporting Drying Machine, the system precisely controls the moisture content of PET raw materials. Matched with an Autoloader Machine, it realizes fully enclosed automatic material feeding, effectively avoiding dust contamination and secondary moisture absorption of dried materials, thus stabilizing product quality from the raw material end.
The clamping unit is structurally reinforced for heavy-duty multi-cavity PET mold production. Tie bars, moving and fixed molds are processed with quenching and tempering treatment to enhance overall rigidity. This design greatly relieves micro-deformation caused by long-term high-pressure clamping, reducing wall thickness deviation among different cavities. The intelligent control system supports saving process parameters for multiple sets of Plastic Mold, enabling fast parameter recall during mold replacement, shortening commissioning time and meeting flexible production requirements for various PET preform specifications.
Instead of pursuing extreme theoretical injection speed, this machine focuses on smooth and stable transition of pressure and flow during injection and pressure holding stages. During multi-cavity preform filling, stable speed switching effectively avoids excessive cavity impact and residual internal stress, reducing common defects such as uneven crystallization and bottle blowing cracking in subsequent processes. Ideal for capacity expansion and equipment upgrading of medium and small PET processing factories, this injection machine balances continuous operational stability, low maintenance cost and high auxiliary equipment compatibility, delivering a practical and high-reliability solution for standardized PET mass production.
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Suppliers
Ningbo Haijing Plastic Machine Manufacturing Co. LTD
Audited supplier
5 year
Main Product:
Plastic Machinery ,
injection machine,
Plastic Auxiliary Equipment,
Auxiliary machine,
Plastic Mold,
Injection Molding Machine