What are the restrictions on the application of self-adhesive coated paper in food packaging?

There are some restrictions on the application of self-adhesive coated paper in food packaging, which mainly stem from the physical characteristics of the coated paper itself and the special requirements of food packaging. Here's a breakdown of these limitations:

First, Physical characteristics limitation

1.Waterproof and oil proof poor: coated paper self-adhesive label is not waterproof, not oil proof. In food packaging, especially food with high liquid or fat content, such as beverages, cooking oil, etc., the label is easy to be damp or contaminated by oil stains, resulting in fuzzy or falling off information.

2.Easy to tear: The mechanical strength of coated paper is relatively low and easy to tear. During transportation, storage or use, if the label is squeezed or rubbed, it may be damaged, affecting the integrity and aesthetics of the information.

3.Limited storage time: the storage time of coated paper labels is generally about 2 years. For foods that need to be stored for a long time, such as cans, dried fruits, etc., coated paper labels may not meet the needs of long-term identification.

Second, Special requirements for food packaging

1.Food safety standards: food packaging materials must meet national food safety standards, such as GB4806.1-2016 "Food contact materials Part 1: General requirements" and GB9685-2016 "Standards for the use of restricted substances in food contact materials and products." Coated paper as a food packaging material must be identified by the national quality inspection department and issued a food packaging material production license to ensure its safety.

2.Low temperature environment adaptability: For food that needs to be stored and transported at low temperatures, such as frozen food, coated paper self-adhesive labels may not meet the requirements. Because the low temperature may cause the glue viscosity to decrease, the label is easy to fall off. At this time, low temperature resistant self-adhesive materials should be selected, such as synthetic paper self-adhesive labels.

3.Moisture-proof and waterproof requirements: Many food packaging needs to have a certain moisture-proof and waterproof performance to protect food from the influence of external moisture or moisture. Coated paper self-adhesive labels may not meet this requirement because they are not waterproof. In this case, a self-adhesive material with moisture-proof and waterproof characteristics can be selected.

Third, Conclusion

In summary, the application of self-adhesive coated paper in food packaging is limited by its physical characteristics and the special requirements of food packaging. When choosing food packaging materials, it is necessary to comprehensively consider the characteristics and needs of the specific product to ensure the durability, safety and compliance with regulatory requirements of the label. For food packaging that needs to be waterproof, oil resistant, low temperature resistant or long-term stored, more suitable self-adhesive materials should be selected.