Self adhesive label material

Adhesive labels, also known as self-adhesive label materials, are a type of composite material that uses paper, film, or special materials as the face material, with an adhesive coated on the back and a silicone-coated protective paper as the base paper.

Due to the variety of coating technologies, adhesive materials come in different grades. The development trend is moving from traditional roller coating and knife coating towards high-pressure cast coating to ensure the utmost uniformity in coating, prevent the formation of bubbles and pinholes, and guarantee coating quality. However, cast coating technology is not yet mature in China, and the traditional roller coating method is mainly adopted domestically.

Classification of self-adhesive label materials

Adhesive labels can be broadly divided into two types: paper-based adhesive labels and film-based adhesive labels.

  1. Paper-based adhesive labels are mainly used for liquid detergent products and popular personal care products; film-based materials are mainly used for mid- to high-end daily chemical products. Currently, popular personal care products and household liquid cleaning products occupy a significant market share, so paper materials are used more frequently.

  2. Film-based adhesive labels commonly use PE, PP, PVC, and other synthetic materials. Film materials mainly come in three types: white, matte, and transparent. Due to the poor printability of film materials, they are usually subjected to corona treatment or have a coating added to their surface to enhance their printability. To prevent some film materials from deforming or tearing during printing and labeling, some materials are also subjected to directional treatment, undergoing uniaxial or biaxial stretching. For example, biaxially oriented polypropylene (BOPP) materials are quite commonly used.

Cleaning method for self-adhesive label materials

  1. First, tear off the adhesive decorations stuck on the glass or product surface. Wet a towel thoroughly with warm water (use hot water in winter) and wipe the adhesive residue twice. Then, apply soap to the warm, wet towel and wipe the residue several times. Finally, use a clean, warm, wet towel to wipe off the soap suds, and the adhesive residue will be removed.

  2. Apply toothpaste evenly to the surface of the adhesive, let it sit for a while, and then wipe it off with a soft cloth. Sometimes, if there is a lot of adhesive and it is quite stubborn, apply toothpaste again to the remaining residue and repeat the process to remove the troublesome adhesive. The principle is that toothpaste contains glycerin, which is a good solvent that can dissolve the components of the adhesive. Additionally, many cosmetics also contain glycerin, which can be used to remove adhesive as well.

  3. Other methods include: Using a utility knife to scrape, suitable for hard surfaces like glass and ceramic tiles; using alcohol to wipe, suitable for glass, ceramic tiles, and clothing; freezing, as the adhesive will harden after freezing and can be directly peeled off, suitable for cases where alcohol or scraping are not recommended.

  4. It is said that essential balm also works well. For adhesive stickers, using a hairdryer to heat them up makes them easier to peel off, but this is not suitable for plastic as excessive heat can cause deformation.

  5. Using a hairdryer to heat it up works very well and is convenient at home since most people have a hairdryer. It works on stickers on glass, plastic, wood, and metal. First, use the hairdryer to heat it up back and forth a few times, then tear off a small edge, and while tearing it off, continue to heat it with the hairdryer. The effect is excellent.

  6. Use an eraser to rub it vigorously for a few times.

  7. In industrial settings, thinner is used for wiping, which makes it very easy to remove.

Environmental reports related to labels

At present, some third-party testing institutions on the market mainly include: CCIC, CTI, SGS, Intertek, CTC, Rainbow Testing, Shenzhen Huatongwei Testing, etc

PET category: REACH, ROHS, halogen, TSCA, TPCH, etc

Synthetic paper: REACH, ROHS, halogen

PVC category: REACH, ROHS (note: PVC is originally a halogen containing product)

PC category: REACH, ROHS, halogen

What

What are the issues to pay attention to the adhesion performance and stability of adhesive labels?

To ensure the adhesion and stability of adhesive labels, high-quality adhesive labels should be selected. High quality adhesive label materials can ensure stable adhesion and durability, and are less prone to warping, falling, and other issues during use.

In summary, in order to make the adhesive labels stick firmly and not curl, it is necessary to pay attention to selecting suitable adhesive materials, cleaning the surface, controlling the adhesive temperature and humidity, using the correct adhesive method, and choosing high-quality adhesive labels. Through effective practice of the above methods, it is possible to further enhance the effectiveness of self-adhesive labels while ensuring that they are firmly adhered and not warped. Specifically, the following measures can be taken:

1. Strengthen the adhesion between the label and the substrate

In some cases, even if the adhesive label itself has good adhesion performance, it may still have problems such as warping and falling off in specific environments. At this point, special adhesives or coating agents can be considered to strengthen the bond between the label and the substrate. This method can effectively improve the durability and stability of labels.

2. Appropriately increase the label area

If you need to make the adhesive label adhere more firmly to the substrate, you can also consider increasing the area of the label appropriately. Increasing the area of the label can not only improve the contact area between the label and the substrate, but also disperse the force, reduce local stress, and effectively avoid problems such as label lifting and falling.

3. Choose a professional adhesive label manufacturer

Finally, to ensure the quality and stability of adhesive labels, it is recommended to choose a professional adhesive label manufacturer for customized production. High quality adhesive label manufacturers can not only provide high-quality raw materials and advanced production processes, but also customize personalized labels according to customers' actual needs to ensure the adhesion performance and stability of the labels.