Excerpt from WeChat public account: Tag Technology (Original author Mei Juan)

For products, the quality of label labeling directly affects the appearance and brand image of products. However, there are inevitably various problems in the process of label labeling, among which the most common is The label bulges and bubbles after labeling, and has wrinkles Phenomena. These problems It not only affects the beauty of products, but also may reduce consumers' desire to buy, which has a certain impact on brand image.

This article will detail the various factors that may cause the label to blister and wrinkled, and share some practical solutions. I hope it will provide you with valuable reference and enlightenment in solving the problem of label labeling.

01
Labeling starts to bulge

The problem of label bulging often occurs in batches, and it will be found after a period of time after labeling, or even sometimes it is found by the end user during the inspection before shipment, which brings great trouble and loss to the end user. The main reasons for label bulging are as follows:

1 The label absorbs water and expands

The label will lose some moisture during processing,If the moisture in the environment suddenly increases during use, the label will absorb water and expand after being labeled，This problem is especially obvious with adhesive labels on paper materials. Since the label has been attached to the object, the area that expands will form bubbles or bulges.

When you encounter this kind of problem,In principle, it is recommended to polish or film the surface of the adhesive label on the paper surface，It can be used to isolate air moisture. If it is not possible to polish or film for special reasons,It is best to open the package of the label and place it for 24h, so that the label can be fully balanced with the moisture in the air before labeling.At the same time, if the object is susceptible to humidity, such as corrugated cardboard boxes, the same treatment should be taken.

2 The glue reacts with the surface of the object being attached

There are many objects that are usually plastic products, which are processed with various additives, and some are made from recycled plastic with more complex components.The glue in the adhesive material is a chemical product that sometimes reacts with some of the ingredients in plastic products, which produces gas,Since the label is attached to the surface of the object,The gas produced cannot be released and will form bubbles or bulges.In this case, if the label is removed, it will be found that the glue layer has produced a relatively obvious change, such as the glue layer appears to be melted.

In this case, it is recommended to replace another adhesive material to process the label,In addition, it is necessary to do a good label test before processing to confirm that there will be no chemical reaction between the two before production.

besides，The uneven surface of the object to be attached, dust, particles and other dirt will also lead to the label and the object to be attached can not be completely attached,This leads to bubble generation. Therefore, be sure that the surface of the object to be labeled is free of oil, dust and impurities before labeling.

02
Label creases

Label wrinkling is one of the common problems in the process of label attachment. Sometimes the label wrinkling can be found at the label attachment site, and sometimes it will be found after a period of time after the label attachment. There are various reasons for label wrinkling, and the main reasons are as follows:

1 Shape of the object being attached

As we know, the adhesive label is a plane, so the object to be attached is also a plane to have a good labeling effect. However, in practical application, many bottles of the object to be attached have a certain curvature,If the curvature of the bottle is too large to form a sphere, then the label will not be able to fully unfold after being labeled, and will inevitably form wrinkles.

When faced with such problems,You can first observe whether the folds are mainly concentrated in the edge of the label(At times the wrinkles are very regular, because the label roller often presses the parts of the label that do not fully unfold into the same position to form wrinkles when the label is automatically attached),Then check the bottle to see if the curvature is too large,In this way, it can be basically determined whether the wrinkles are caused by the unreasonable design of the shape of the object to be attached. If so, the shape of the object to be attached needs to be redesigned.

2  The pressure of the marker is uneven

Automatic labeling equipment has a labeling device,Pressure of the markerThe size can usually be adjusted, some of the surfaces are softer,Some of the surfaces are softer,If the pressure is too great, it is easy to lead to deformation of the surface of the object being attached, resulting in wrinkling of the label.

Therefore, when adjusting the pressure of the pacifier device, it must be adjusted to the appropriate range,In principle, it should be adjusted to the point where the label is just attached.

3  The label absorbs water

During the rainy season,The air humidity will suddenly increase, at this time if the moisture content in the label is lower than the moisture content in the air, it is easy to cause the label to absorb water and expand, especially the paper surface material of the adhesive label, the phenomenon is particularly obvious. In this case, label,After the label is attached, it will absorb water and expand, which can easily lead to the label wrinkling.

therefore ，Before labeling in the rainy season, it is best to open the package of the label and place it for 24h to ensure that the label reaches a balance with the moisture in the air before labeling.

4  Transportation or storage problems

The label is stored or transported,If improperly stacked or compressed,It may cause friction and compression between the label layers, resulting in wrinkling.

Therefore, appropriate packaging materials and methods should be used in the process of transportation, such as bubble wrap, cardboard, etc.,Isolate the labels layer by layer to reduce the friction and compression between the labels during transportation,At the same time, in the process of transportation, we should avoid violent vibration and impact as far as possible, so as not to damage the label.