Plastic-steel strapping screen changer

The screen changer plays a crucial role in the production line of plastic-steel strapping bands. Its applications are primarily reflected in multiple aspects such as improving production efficiency, ensuring product quality, and reducing maintenance costs. A detailed analysis is as follows:

Filtering Impurities to Ensure Product Quality

During the production of plastic-steel strapping bands, impurities such as incompletely melted plastic particles and dust may be present in the plastic melt. The screen changer can effectively filter out these impurities, providing a clean, impurity-free plastic melt for subsequent strapping band forming processes. For instance, in PET plastic-steel strapping band production equipment, the use of a non-stop screen changer (a dual-cylinder CPF melt filter with a filtration area of 2.5m² × 2, totaling 5m²) can ensure the purity of the plastic melt, resulting in strapping bands with better strength, toughness, and appearance quality.

Maintaining Production Stability and Improving Efficiency

By continuously filtering impurities, the screen changer prevents the accumulation of impurities inside the mold or extruder, thereby reducing production interruptions caused by impurity blockages. Taking the automatic screen changer as an example, it can achieve screen changing without stopping the machine, without affecting product quality, and helps maintain the stability and continuity of the production process. For example, a heavy-duty PET strapping band production line employing a 100% fully automatic flushing filter screen and a PLC-controlled continuous backflushing filter screen changer can significantly enhance production efficiency.

Achieving Constant Pressure Production to Ensure Product Quality Stability

During screen changing, the automatic screen changer enables smooth, short-distance movement of the screen belt, ensuring no fluctuations in material pressure and flow, thus achieving constant pressure production. This is particularly crucial for strapping band production, as pressure fluctuations may lead to quality issues such as uneven thickness and inconsistent strength in the strapping bands.

Fully Automatic Operation to Reduce Labor Intensity and Safety Risks

Once the relevant parameters are set, the screen changer operates entirely automatically through the control system without manual intervention until the screen belt is fully utilized. This not only reduces the labor intensity of workers but also minimizes operational errors and safety risks associated with manual screen changing. Additionally, it enhances production efficiency and saves labor costs.

Non-Powered Screen Movement to Reduce Energy Consumption and Operating Costs

The automatic screen changer relies on the pressure of the melt itself to drive the movement of the screen belt, eliminating the need for additional power devices. With its innovative structure, it is easy to install, occupies minimal space, and can adapt to different production environments and equipment layouts, while also reducing the energy consumption and operating costs of the equipment.

Convenient Maintenance and Cleaning to Ensure Filtration Effectiveness

The filter screen blocks adopt a detachable design, facilitating regular maintenance and cleaning by workers. This ensures the filtration effectiveness and service life of the filter screens, further guaranteeing the stability of the production process and product quality.

Good Sealing Performance to Prevent Material Leakage and Pollution

The automatic screen changer employs water-cooled sealing technology, effectively preventing material leakage, avoiding waste of raw materials and pollution of the production environment, while also ensuring the stability and reliability of the screen changing process.

Wide Range of Applications to Adapt to Different Materials and Production Needs

The automatic screen changer is suitable for the production of strapping bands using various plastic raw materials, such as PP and PET. It can also be applied to the production processes of strapping bands with different specifications and types, demonstrating strong versatility and adaptability. For example, PET plastic-steel strapping band production equipment can utilize various raw materials such as virgin PET, recycled PET pellets, PET bottle flakes, and waste PET strapping bands.

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