Is the edge of colored copperplate label paper prone to warping or tearing?

Whether the edges of colored copperplate label paper are prone to warping or tearing depends on various factors, including the material of the label paper, production process, storage conditions, usage environment, and pasting method.

Reason for warping

Adhesive stickiness: If the adhesive stickiness is too weak or the adhesive is not selected properly, it may cause the edges of the label paper to curl. Especially on surfaces with large curvature or containers that require hot filling, adhesive with high initial viscosity and suitable label materials should be selected.

Film tension: Poor control of film tension may also cause the edges of the label paper to curl. The label paper that has been correctly coated should be flat and not bent after being peeled off from the base paper, and the label can maintain good followability after labeling. If the film tension is too tight, the label may curl up after being peeled off from the backing paper, causing the edge of the label to peel off.

Bottle shape: Unreasonable bottle shape design, such as partial spherical shape on the inner and outer surfaces of the labeling range, may also cause wrinkles or edge warping on both sides of the lower end after labeling.

Reason for tearing

Label paper quality: If there are quality problems with the label paper itself, such as poor die-cutting, damaged release layer, etc., it may cause the label paper to tear easily.

Storage conditions: Adverse environmental factors such as humidity and high temperature may cause paper deformation, thereby increasing the risk of tearing.

Usage environment: In the case of large humidity changes in the usage environment, the moisture absorption of paper can cause its size to change, thereby increasing the possibility of tearing.

Preventive measures

Choose high-quality label paper: Ensure that the label paper is of good quality, select materials and adhesive grades suitable for the application environment.

Optimize production process: Manufacturers should strictly control the pulp ratio, pressing, and drying processes to ensure stable quality of the label paper produced.

Improve storage environment: Ensure that label paper is stored in a dry, ventilated, and dark environment to reduce the impact of moisture and high temperatures on the paper.

Control the humidity of the usage environment: When using label paper, try to maintain a stable humidity and avoid excessive humidity changes.

Correct pasting: During the labeling process, the labeling pressure should be controlled to ensure that the label paper is fully adhered to the target surface.

In summary, whether the edges of colored copperplate label paper are prone to warping or tearing is not absolute, but is influenced by various factors. By selecting high-quality label paper, optimizing production processes, improving storage environments, controlling humidity in usage environments, and adhering correctly, the risk of label paper edge warping or tearing can be effectively reduced.