How to solve the problem of wrinkle deformation of self-adhesive coated paper?

The problem of wrinkle deformation of self-adhesive coated paper may be caused by a variety of factors, including material characteristics, processing process, environmental conditions and operation mode. To solve this problem, it can be solved from the following aspects:

First, material selection and pretreatment

1. Select the right material:

According to product characteristics and labeling requirements, choose a moderate hardness and flexibility of self-adhesive coated paper material to ensure that it can fully fit the surface of the product when attached to avoid wrinkling.

Pay attention to the moisture content of the material to avoid the expansion and deformation of the material due to too much or too fast water absorption.

2. Pretreatment:

Before labeling, open the outer package of the self-adhesive coated paper and put it into the labeling workshop for a period of time to balance the humidity of the labeling environment and reduce wrinkles caused by humidity differences.

If necessary, the coating process can be used instead of the polishing oil process to effectively block the label from absorbing external water and reduce the probability of wrinkles.

Second, processing control

1. Printing and die cutting:

During the printing process, use appropriate humidity control methods, such as humidifying the label bottom paper with a humidifier, to ensure that the label is not too dry and reduce the impact of external humidity changes on the label.

Precisely control the die cutting process, select the right tool and adjust the cutting parameters to ensure accurate and smooth cutting and reduce the chance of wrinkling.

2. Composite film selection and control:

Choose a composite light film with good adhesion and water resistance to ensure a strong bond between the label and the backing paper.

During the composite process, factors such as temperature, pressure and speed are precisely controlled to ensure the adhesion and surface smoothness between the composite film and the backing paper.

Third, control of environmental conditions

1. Temperature and humidity control:

Keep the temperature and humidity of the labeling environment stable to avoid wrinkling of self-adhesive coated paper due to excessive temperature or humidity. In general, the best temperature for printing is 20-25 ° C, and the relative humidity is between 50-60%.

In the rainy season or high humidity environment, strengthen the temperature and humidity control of the workshop, such as using heating pipes or hot fans to reduce local humidity.

Fourth, operation standard and skill improvement

1. Operation specification:

Train operators to improve their labeling skills and practices to avoid wrinkles caused by improper operation.

Use the appropriate labeling equipment, adjust the position and contact time of the scraper of the labeling machine, so that the adhesive surface of the entire label forms a uniform and synchronous line contact with the product surface, and solve the label fold problem.

2. Auxiliary tools and methods:

Use auxiliary tools to help labeling, such as increasing the pressure and time of labeling to improve the adhesion effect of the label.

Before labeling, the surface of the product is properly treated to ensure that it is smooth and clean, and improve the adhesion of the self-adhesive label.

Fifth, other precautions

Pay attention to the storage conditions of self-adhesive coated paper to avoid long-term exposure to high temperature, high humidity or direct sunlight.

Regularly check the quality and performance of self-adhesive coated paper, timely find problems and take measures to solve them.

To sum up, the wrinkling and deformation of self-adhesive coated paper can be effectively solved through the efforts of material selection and pretreatment, processing control, environmental condition control, operation specifications and skills improvement, and attention to other related matters.