What are the classifications of self-adhesive stickers?

Self-adhesive is usually called self-adhesive label. Adhesive is usually composed of face material, adhesive, face paper, etc. With the use of adhesives, they are used in all walks of life from ordinary families to society. It plays an important role in trademark labels of food, electronic products and automobiles. When in use, the backing paper can be gently torn off and pasted on various surfaces. There are many kinds of materials and adhesives on the surface of this label. The following is the classification of self-adhesive stickers.

Application field of self-adhesive label

In general, the surface coating of the adhesive is specially treated to make the adhesive have better adsorption effect. Adhesives were originally invented by Americans, which were first used in manual production and then used in industrial fields. The adhesive has a wide range of applications, such as decorative decals on automobiles or motorcycles, labels on commodity windows, labels on containers and so on. Generally, the use of special adhesives can have better fire resistance and water resistance. Generally, it is also used as a label on food or chemicals, medicines, etc. In order to make the label clear and have good durability, self-adhesive is generally used.

Classification of self-adhesive labels

1:? Use surface material: molded wood? Free? Paper, coated paper art? Paper (shading/mirror), transparent PVC, electrostatic PVC, polyester PET, laser paper, temperature-resistant paper, PP, PC, kraft paper, fluorescent paper, thermal paper, copper silk dragon, silver silk dragon, gold-plated paper, silver-plated paper, synthetic paper (CPC/PP/HYL/ excellent toughness paper/pearl paper), aluminum foil paper, fragile (fragile).

2:? Film: transparent PET? Translucent pet? Transparent OPP? Translucent OPP? Transparent PVC? Bright white PVC? Dark white PVC? Synthetic paper? Bright gold (silver) polyester? Matt gold (silver) polyester? .

3:? Types of glue used: universal super-viscosity, universal strong viscosity, strong viscosity for frozen food, universal re-cover and fiber re-cover.

4:? Use backing paper: white, blue and yellow cellophane (or onion)? Kraft paper polyester PET? Coated paper? Polyethylene, polyethylene.

Development of self-adhesive

Self-adhesive labels are often used in printing industry. With the development of the times, self-adhesive has developed into a very independent and special technology. At present, the United States and other European and American countries are widely used in the world, which are usually used for self-adhesive printing technology. Self-adhesive stickers are divided into paper stickers and film stickers, which are often used in high-end products. There are white transparent films on the market. However, because the film base paste is easy to tear when printing, some materials will be specially treated. Usually, this kind of sticker is made of PE and other materials.

Selection of adhesive for self-adhesive label

Adhesive is generally tape-casting coating method, and its basic principle is to inject adhesive through the pressure in the cavity of the coating head, and the top of the coating head is a slit with adjustable size. When coating, the adhesive flows out from the slit of the coating head and is coated on the surface of the backing paper. The coating amount can be adjusted by adjusting the seam, and the coating amount of adhesive is the key to determine the properties of self-adhesive materials. Generally, the recommended coating amount is 24g/m2, and the tolerance is 3g. When the viscosity of the adhesive changes, the total coating weight can be kept constant by adjusting the pressure. Advanced tape-casting coating device feeds back coating thickness information to computer control equipment through infrared scanning sensor, and automatically adjusts relevant data after analysis and processing to ensure the stability of coating quality. The coating amount of adhesive should change according to the temperature and humidity in different seasons and regions, and can also be adjusted according to the requirements of customers.

The general rule is that the coating amount in winter is larger than that in summer. The amount of paint used in winter in the north is larger than that in the south. For different substrate surfaces, the coating amount of rough surface is greater than that of smooth surface. The coating amount is related to the adhesion of the material, and within a certain range, the adhesion is proportional to the coating amount. The coating amount of adhesive is too large or too small, which directly affects the processing and storage of materials.

Self-adhesive was invented in the last century and has gradually matured. It has also been applied in various industries and fields, providing very convenient help for human life, promoting the development of traditional labels to self-adhesive stickers to a certain extent, and greatly improving people's work. The above is about the classification of self-adhesive stickers, I hope it will help everyone!

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