Dalian Youyan Plastic Machinery Co., Ltd.
Couplet: Feng Manager
Phone/fax:086-0411-86260347
Hand:18624289888
13604263838
Mail box:21272059@qq.com
Network access:www.dlyouyan.com
Address: Chinese Lushunkou District of Dalian City, the three streams town (take Tuchengzi Dalian to Lushun Road westbound vehicle airport about 200 meters in front of about 100 meters)
# Identification and Judgment of Quality Differences in Three-Layer Co-Extrusion Film Blowing Machines
Quality of three-layer co-extrusion film blowing machines directly determines film uniformity, adhesion, performance and efficiency. Judgments rely on core components, process control, manufacturing, performance and after-sales service.
## 1. Core Components
- **Screw**: L/D 28–35, proper compression ratio, 38CrMoAlA nitrided alloy for wear resistance.
- **Die head**: Symmetrical spiral flow channels, 0.01mm adjustment precision, polished surface, optional automatic thickness control.
- **Drive**: Servo motors for stable output and energy saving.
## 2. Process Control Precision
- **Temperature**: PID control with fluctuation ≤±1℃.
- **Tension**: Closed-loop system to prevent wrinkling and deformation.
- **Automation**: PLC and HMI for parameter control and fault alerts.
## 3. Manufacturing and Assembly
- Heavy steel frame with stress relief treatment.
- CNC machined parts with high precision and good sealing.
## 4. Actual Performance
- Film thickness tolerance ≤±3%, stable lamination, qualified physical properties.
- Continuous stable operation with low failure rate and energy consumption.
## 5. After-Sales and Brand
- Professional installation, training and timely spare parts.
- Reliable brands ensure long-term stability.
## Conclusion
Comprehensive evaluation of configuration, control, manufacturing, performance and service is essential. Prioritize long-term stability over low price for better economic benefits.
