Types of Adhesive Materials

  1. Based on adhesive properties, they can be classified into permanent adhesive materials and removable adhesive materials.

  2. Based on adhesive coating technology, they can be classified into hot-melt adhesive materials, solvent-based adhesive materials, and emulsion-based adhesive materials.

  3. Based on adhesive and chemical properties, they are divided into two types: rubber-based adhesive materials and acrylic-based adhesive materials.

  4. Based on the properties of the base paper, they are divided into three types: opaque base paper, semi-transparent base paper, and transparent base paper adhesive materials.

  5. Based on the properties of the face material, they are divided into paper-based adhesive materials, film-based adhesive materials, and special adhesive materials.

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.