Common Issues with Self-Adhesive Labels and How to Avoid Them
Self-adhesive labels are widely used in modern commercial and industrial fields due to their convenience and practicality. They can be found in product packaging, logistics management, document labeling, and equipment maintenance. However, during the use of self-adhesive labels, some problems often arise that affect the normal use and service life of the labels. This article will detail the common problems in the use of self - adhesive labels and provide corresponding solutions to help you better utilize the role of self - adhesive labels.

1. Labels Don't Stick or Fall Off

Common Scenarios:
•  Falling off plastic bottles after a few days
•  Labels curling up automatically in refrigerated environments
•  Labels partially falling off during transportation
Causes:
•  Incompatible adhesive type : Different materials (such as PP, PET, glass, metal) require matching adhesives (such as general - purpose adhesive, freezing adhesive, high - temperature - resistant adhesive).
•  Unclean surface : Oil, dust, and moisture can severely affect adhesion.
•  Low environmental temperature : The adhesion of ordinary glue drops significantly below 0℃.
Solutions:
•  Choose the appropriate adhesive type according to the material of the object to be labeled and the usage environment (such as "freezing glue" for cold chains and "heat - resistant glue" for high - temperature environments).
•  Ensure the surface is dry, clean, and free of grease before labeling.
•  Operate within the recommended labeling temperature range (usually 10 - 35℃).

2. Label Edges Curling or Rolling Up

Common Scenarios:
•  The four corners of the label curling upwards
•  Labels curling up automatically after long - term storage
Causes:
•  Inconsistent shrinkage rates of face material and adhesive layer (especially in environments with large temperature and humidity changes).
•  Stress release after label cutting , leading to deformation.
•  Poor quality lamination or no lamination , weak moisture resistance.
Solutions:
•  Choose labels with lamination (such as glossy film or matte film) to enhance dimensional stability.
•  Store in a constant temperature and humidity environment (recommended temperature 23±3℃, humidity 50%±10%).
•  Avoid exposing labels directly to sunlight or high - humidity environments.

3. Printed Content is Blurry, Fading, or Unrecognizable

Common Scenarios:
•  Barcodes can't be scanned
•  Text prints with light color
•  Writing disappears after a few days
Causes:
•  Incompatibility between label material and printer type (such as thermal paper used in laser printers).
•  Poor quality ribbon/ink or incorrect parameter settings.
•  Face material of the label is not resistant to friction or solvents , causing information to wear off.
Solutions:
•  Clarify whether you are using thermal labels or labels compatible with thermal transfer/ laser/ inkjet printers and match the corresponding equipment.
•  When using thermal transfer printing, choose a ribbon that matches the face material (wax - based, hybrid - based, resin - based).
•  For labels that need long - term storage or contact with chemicals, choose abrasion - resistant and solvent - resistant synthetic materials (such as PET, PVC).

4. Residual Adhesive Left After Removal, Difficult to Clean

Causes:
•  Permanent adhesive used for temporary identification.
•  Adhesive aging in high - temperature environments , becoming stickier and harder to remove.
•  The surface to be labeled is porous or rough , allowing glue to seep into the gaps.
Solutions:
•  For temporary use, choose labels with "removable adhesive".
•  To remove residual glue, you can use alcohol, special glue remover, or heat - soften it with a hairdryer and then gently wipe it off.
•  Note: Some precision equipment or food - contact surfaces prohibit the use of chemical solvents, so you should test in advance.

5. Labels Fail in Special Environments (Such as Freezing, Humid, High - Temperature)

Cold chains, cold storage, outdoor transportation, and other scenarios are a severe test for labels.
Typical Problems:
•  Labels become brittle and crack after freezing
•  Adhesive emulsifies and labels fall off in humid environments
•  Adhesive flows and contaminates products in high - temperature conditions
Solutions:
•  Cold chain scenario : Choose "freezing labels" designed for low temperatures (-40℃ can be used), with face materials such as offset paper + freezing glue, or synthetic paper.
•  Humid environment : Use waterproof face materials (such as PET, PP) + water - resistant glue.
•  High - temperature environment (such as sterilization, car engine): Choose high - temperature - resistant labels (can withstand above 150℃), commonly using PI (polyimide) or aluminum - foil materials.

Conclusion

Although some problems may arise during the use of self - adhesive labels, these problems can be effectively solved through correct selection, use, and maintenance. When selecting self - adhesive labels, it is necessary to fully consider the usage environment, the characteristics of the object to be labeled, and the functional requirements of the label, and choose the appropriate label materials and types. During the use process, attention should be paid to the labeling method and environmental conditions to ensure that the label can be firmly attached to the surface of the object. In addition, regular inspection and maintenance of the labels should be carried out to promptly identify and resolve any potential problems, so as to fully utilize the role of self - adhesive labels and improve work efficiency and management level.