In the process of producing eight-side sealed plastic bags, some common problems may be encountered, which may affect product quality, production efficiency or customer satisfaction. Here are some common problems and their possible causes and solutions:

1. Weak or leaking edge
Problem description: The edge of the bag is cracked, leaking or leaking.

Possible causes:

The sealing temperature is too low or too high.

The sealing pressure is uneven or insufficient.

The sealing time is improperly set.

Material quality problems (such as uneven film thickness or unsuitable material).

Solution:

Adjust the temperature, pressure and time parameters of the sealing machine to ensure that the edge is firmly sealed.

Check the material quality to ensure that the film thickness is uniform and suitable for the eight-side sealing process.

Maintain the sealing equipment regularly to ensure stable operation of the equipment.

2.Bag size deviation
Problem description: The actual size of the bag does not match the designed size, affecting the packaging effect.

Possible causes:

The mold design or manufacturing is not accurate.

The material stretching is uneven.

Improper equipment commissioning.

Solution:

Check the mold accuracy to ensure that it meets the design requirements.

Adjust the equipment tension control to avoid excessive material stretching.

Calibrate the equipment regularly to ensure consistent production dimensions.

3.The printed pattern is unclear or misaligned
Problem description: The printed pattern on the bag is blurred, uneven in color, or offset in position.

Possible causes:

Poor quality or worn printing plates.

Improper ink mixing or insufficient drying.

Poor surface treatment of the material (such as insufficient corona treatment).

Insufficient equipment overprint accuracy.

Solution:

Use high-quality printing plates and replace them regularly.

Adjust the ink formula and drying conditions to ensure clear printing.

Check the surface treatment of the material to ensure good ink adhesion.

Calibrate the printing equipment to improve overprint accuracy.

4.The bag has an uneven or wrinkled appearance
Problem description: Wrinkles, creases, or unevenness appear on the surface of the bag.

Possible causes:

Improper material tension control.

The sealing temperature is too high, causing the material to shrink.

The equipment roller is not flat or worn.

Solution:

Adjust the material tension to ensure that the film is flat.

Reduce the sealing temperature to avoid excessive shrinkage of the material.

Check the status of the equipment roller and replace the worn parts in time.

5.Insufficient bag strength
Problem description: The bag is easy to break during transportation or use.

Possible reasons:

The material thickness is insufficient or the quality is not up to standard.

The edge sealing process is not perfect.

The bag design is unreasonable (such as too sharp corners).

Solution:

Select materials with appropriate thickness and up to standard quality.

Optimize the edge sealing process to ensure that the edge sealing is firm.

Improve the bag design to avoid stress concentration.

6.Low production efficiency
Problem description: Slow production speed and frequent equipment shutdown.

Possible reasons:

Equipment aging or insufficient maintenance.

Frequent material replacement or unsmooth feeding.

Insufficient operator skills.

Solution:

Maintain the equipment regularly to ensure stable operation of the equipment.

Optimize the material loading process to reduce downtime.

Strengthen operator training to improve production efficiency.

7.Environmental issues
Problem description: Too much waste is generated during the production process or does not meet environmental protection requirements.

Possible reasons:

Low material utilization rate.

Improper waste recycling and treatment.

Use non-environmentally friendly materials.

Solution:

Optimize layout design to improve material utilization rate.

Establish a waste recycling mechanism to reduce waste.

Use degradable or recyclable environmentally friendly materials.

8.High customer complaint rate
Problem description: Customers report that the quality of the bags is unstable or does not meet the requirements.

Possible reasons:

The quality control of the production process is not strict.

Customer needs are not fully communicated.

The packaging design does not meet the actual usage scenario.

Solution:

Strengthen quality inspection during the production process.

Fully communicate with customers to clarify needs.

Optimize packaging design according to customer usage scenarios.

Summary
The production of eight-side sealed plastic bags involves multiple links, and problems in any link may affect the quality of the final product. By optimizing equipment parameters, selecting high-quality materials, strengthening quality control and employee training, problems in production can be effectively reduced, and product qualification rate and customer satisfaction can be improved.

If you are a manufacturer of eight-side sealed plastic bags, it is recommended to regularly perform equipment maintenance and process optimization, and maintain close communication with customers to ensure that the products meet market demand.