What are the factors that affect the quality of self-adhesive die-cutting

Factors that affect the quality of die-cutting: All aspects of die-cutting for self-adhesive materials can affect the quality of die-cutting, such as die-cutting method, precision of die-cutting equipment, and matching of die-cutting blades with materials. In addition, the quality of die-cutting is also related to factors such as the proficiency of the operator, processing environment, and static electricity. The commonly used adhesive surface materials can be mainly divided into two categories: paper and film. The main components of ordinary paper are fibers and fillers (such as calcium carbonate and kaolin), so for the die-cutting process, paper is relatively easy to die-cut and generally rarely causes quality problems in die-cutting. The commonly used adhesive film surface materials include PE, PP, PET, etc. Compared to paper, film has higher requirements for die-cutting technology. Thin films have strong toughness, especially PET (polyester) materials. So when choosing a die-cutting knife, it is important to choose a blade that has undergone hardness treatment, in order to achieve a hardness of 58 Rockwell or above, and the blade angle should be between 32 ° -75 °. The smaller the blade, the sharper it is, and the easier it is to die-cut. The influence of adhesives on the quality of die-cutting adhesive labels can be divided into acrylic water-based latex and rubber based hot melt adhesive. Due to the low cohesion of acrylic water-based latex, it is easy to die cut, and there are no special requirements for die cutting tools or environment. The quality of die cutting can be well guaranteed. As for Hot-melt adhesive, due to the large intermolecular cohesion, the die-cutting requirements are more stringent. The die-cutting knife must completely cut off the glue to ensure the normal discharge of the waste edge, otherwise the label will be taken away from the backing paper.