What is the function of A4 adhesive backing paper?

The base paper of A4 adhesive stickers plays a crucial role in the overall structure of adhesive stickers, and its main functions include the following:

1.Protective adhesive: The backing paper can prevent the adhesive from sticking to other objects or itself before use, thereby maintaining the stickiness of the adhesive sticker. Specifically, the surface of the base paper is usually coated with a layer of silicone oil to reduce its surface tension and make it very smooth, which can effectively prevent the adhesive from sticking to the base paper.

2.Supporting surface material: The base paper provides necessary support for the surface material of the adhesive sticker, enabling it to remain flat and stable, facilitating subsequent die-cutting, waste disposal, and labeling operations on the labeling machine.

3.Accepting release agent coating: The base paper is the part that accepts release agent coating, and the presence of release agent further ensures that the adhesive will not stick to the base paper, thereby ensuring the effectiveness of the adhesive sticker.

In summary, the base paper of A4 self-adhesive plays an important role in protecting the adhesive, supporting the surface material, and receiving release agent coating, and is an indispensable part of the structure of self-adhesive stickers.