LS Series high-speed servo PET blow molding machine with 2 to 8 cavities and output up to 11,000 bottles/hour. Patented variable center-distance heating cuts energy use over 55%, delivering even wall thickness and flawless bottles for turnkey water and beverage lines.
The LS Series high-speed servo blow molding machine is a food-grade PET bottle maker built by ZL Machinery for beverage, juice and water plants. Combining servo energy savings with fully automatic operation, it forms the front end of complete turnkey beverage lines running in Central Asia, Africa, Southeast Asia and South America.
Overview
The whole process is driven from a human-machine interface for hands-off running – automatic preform loading, automatic blowing and automatic bottle discharge in one continuous flow.
Every pneumatic cylinder carries a magnetic induction switch, and the PLC watches each action in real time: the next motion only begins once the previous stroke reaches its set position. If a stroke falls short, the system triggers protection, halts the following steps, sounds an alarm and pinpoints the fault on the PLC screen.
An advanced servo drive and patented variable center-distance design together deliver strong output and low energy use, producing bottles with even wall thickness and clean, flawless mold lines.
Key Features
- High output – up to 1800 water bottles per hour per cavity; independent heating and blowing cycles with synchronized clamping, mouth sealing and bottom-mold lifting for fast, stable production.
- Energy efficient – the electric servo system cuts low-pressure air use, and the patented variable center-distance design shortens the heating oven by over 55% versus fixed center-distance systems.
- Premium bottle quality – a high-efficiency clamping system yields flawless mold lines, while precise bidirectional axial heating ensures even wall thickness for lightweight, consistent bottles.
- Smart automation – HMI operation, magnetic-switch cylinders and real-time PLC stroke detection with automatic alarm and fault location for reliable, low-failure running.
- Precise synchronization – clamping, mouth sealing and bottom-mold movements run in full sync, with dual heating and blowing cycles cooperating for a stable long-term rhythm.
How It Works
PET preforms are fed in automatically by the preform loader and enter the heating oven, where bidirectional axial heating brings them evenly to the ideal forming temperature.
The heated preforms move to the blowing station; clamping, mouth-sealing and bottom-mold mechanisms lock into place in sync, and high-pressure air inflates each preform to the cavity shape to form the bottle.
Formed bottles are demolded and discharged automatically. Independent yet cooperating heating and blowing cycles lift efficiency, while the servo drive keeps every motion accurate and repeatable for consistent quality batch after batch.
Technical Parameters
Data is for reference only. Specifications can be customized according to actual production requirements.
Applications
- Beverage: PET bottles for water, juice, carbonated drinks, tea and functional beverages
- Food: PET bottles for condiments, edible oil, sauces and dairy products
- Daily chemical: plastic bottles for cosmetics, toiletries and cleaning products
- Pharmaceutical & health: PET bottles for pharmaceutical liquids, health products and medical packaging
- Other sectors: assorted PET bottles for chemical and agricultural packaging
Get a Quote
Blow your own bottles and cut packaging cost. Pair the LS Series with a complete packaged drinking water production line from ZL Machinery for a fully integrated, energy-saving turnkey plant.
