How to solve the wrinkle problem of thermal label paper?

To solve the wrinkle problem of thermal label paper, you can start from many aspects, the following are some specific solutions and steps:

First, ensure that the environment is suitable

1. Control temperature and humidity:

Heat-sensitive label paper is easy to absorb water and expand in a humid environment, resulting in wrinkling. Therefore, it should be ensured that the humidity of the labeling workshop is moderate to avoid excessive humidity.

At the same time, avoid operating in a high temperature environment to reduce the deformation of the heat-sensitive label paper due to uneven heat.

Second, pretreatment label paper

1. Equilibrium humidity:

Before labeling, open the outer package of the label paper and put it into the labeling workshop for a period of time (more than 48 hours is recommended) so that the label paper can fully balance the humidity of the labeling environment. This can reduce the swelling and folding of the label paper caused by excessive water absorption after labeling.

Third, optimize the quality of label paper

1. Selection of high quality raw materials:

The selection of high-quality self-adhesive raw materials for production and processing can reduce the occurrence of wrinkling to a certain extent.

Peritoneum the self-adhesive label, or wrap a layer of UV waterproof varnish on the surface of the paper to reduce the absorption of moisture on the self-adhesive label.

Fourth, improve the processing technology

1. Coating process:

Change the processing technology of the label, and use the laminating process to replace the glazing oil process. The film can effectively isolate the label from absorbing external water, thereby reducing the probability of folding.

2. Rehumidification:

In the printing process, the method of secondary humidification can be used to increase the moisture of the label paper. For example, during label processing and die-cutting, use a humidifier to humidifies the label bottom paper to prevent the label from drying out and reduce the impact of external humidity on the label.

Fifth, ensure that the labeling surface is smooth

1. Check the surface of the labeled object:

Before labeling, ensure that the surface of the object to be pasted is smooth and flat, and there is no uneven or granular material. This can reduce air entry and expansion wrinkling caused by uneven labeling surfaces.

Sixth, other precautions

1. Avoid mechanical problems:

Check whether the roller, bearing and other parts of the printer are damaged or aged to avoid poor paper transmission and wrinkling caused by mechanical problems.

2. Correct storage and use:

Heat-sensitive labels should be stored in a dry, ventilated and cool environment, away from direct sunlight and high temperatures. At the same time, contact with chemicals such as too much acid or too much alkali should be avoided during use, so as not to affect the quality and stability of the label paper.

In summary, to solve the wrinkle problem of thermal label paper, it is necessary to start from many aspects such as environmental control, pre-treatment of label paper, optimization of label paper quality, improvement of processing technology and ensuring the smooth surface of label paper. Through the comprehensive application of these methods, the wrinkling phenomenon of thermal label paper can be effectively reduced, and the labeling quality and efficiency can be improved.