How to ensure the slitting quality of plastic film

Ensuring the slitting quality of plastic film requires a number of aspects, and here are some of the key measures:

1. Stable tension control

Stable tension is the basis for ensuring slitting quality. Excessive or low tension can cause the film to shift, slacken, or wrinkle during the slitting process. Therefore, it should be ensured that the tension control system of the slitter is stable and reliable, and can be accurately adjusted according to the material, thickness and width of the film.

2. Accurate tool setting and performance

1. Tool selection: Choose the right tool for the film material and thickness to ensure the sharpness and durability of the tool.

2. Tool spacing setting: According to the required slitting width, the tool spacing is accurately set to avoid deviation.

3. Tool positioning and adjustment: During the slitting process, the positioning of the tool should be checked regularly to ensure that it is not displaced, shaken or deflected. If necessary, adjustments should be made in a timely manner.

3. High-quality feeding and winding control

1. Feed control: Ensure that the fed film has a uniform width, spacing and thickness. At the same time, the speed and range of the feed unwinding shaft should be controlled within the allowable range of the film width corrector.

2. Rewinding control: The rewinding mechanism should be able to wind the cut film smoothly and evenly, avoiding wrinkles, overlapping or sagging and other problems.

4. Accurate sensors and correctors

1. Sensor detection: The sensor should be able to continuously detect the edge of the slitting strip to ensure the accuracy of the slitting. Any errors or blind spots in the inspection can lead to slitting errors.

2. Corrector accuracy: The corrector should be strictly controlled and react at any time, and its range and impact velocity should match the quality and speed of the feed coil.

5. Reasonable slitting speed

The slitting speed directly affects the slitting quality of the film. Under the condition that the quality of the parent roll or paper core is not good, slitting at high speed is easy to cause quality problems such as deviation and longitudinal streaks of film products. Therefore, the slitting speed should be reasonably controlled according to the quality of the parent roll.

6. Good equipment maintenance and maintenance

1. Regular cleaning: Clean all parts of the slitting machine regularly to ensure that there are no impurities such as dust and oil stains that affect the quality of slitting.

2. Lubrication and fastening: Lubricate the transmission parts of the slitting machine regularly to ensure smooth operation; At the same time, check and tighten each connecting part to avoid loosening and slitting errors.

3. Component replacement: For parts with serious wear, such as knives, bearings, etc., they should be replaced in time to ensure the performance and accuracy of the slitting machine.

7. Strict quality control process

1. First article inspection: Before each batch of film slitting, the first article inspection should be carried out to ensure that the slitting quality meets the requirements.

2. Process monitoring: During the slitting process, the quality status of the film should be constantly monitored, and if problems are found, they should be adjusted and dealt with in time.

3. Finished product inspection: Strict inspection of the finished product after slitting to ensure that the quality is up to standard. If there are nonconforming products, they should be reworked or scrapped in time.

In summary, the slitting quality of plastic film can be ensured through measures such as stable tension control, precise tool setting and performance, high-quality feeding and winding control, accurate sensors and correctors, reasonable slitting speed, good equipment maintenance and maintenance, and strict quality control processes.