How to ensure the printing quality of self-adhesive coated paper?

To ensure the printing quality of self-adhesive coated paper, it is necessary to start from many aspects, including raw material selection, printing technology, configure and adjust devices, process route formulation, and post-processing and quality control. The following are some specific measures and suggestions:

1. Raw material selection

High-quality materials: The selection of high-quality, physical and chemical indicators are qualified self-adhesive coated paper materials to ensure that the material has good printability and stability. The selection of materials should take into account factors such as surface gloss, color consistency, density uniformity and coating strength, which directly affect the adhesion and printing quality of the ink.

Feature matching: According to the use and needs of the self-adhesive label, choose the appropriate surface material, adhesive and backing paper. For example, for labels that require resistance to water, heat, light or chemicals, materials with corresponding characteristics should be selected.

2. Printing technology

Ink selection and management: Select the ink that matches the printing material to ensure the adhesion and drying properties of the ink. Pay attention to the use of ink and storage conditions, to avoid the use of expired or deteriorated ink. In the printing process, the amount and density of ink are strictly controlled to ensure printing quality and accuracy.

Printing pressure debugging: the weight of printing pressure directly affects the size and depth of ink color reproduction in graphic transfer and printing outlets. Therefore, in the printing process, it is necessary to adjust the pad technology and printing pressure to ensure that the printing ink layer is uniform and bright. The printing pressure of coated paper should be uniform and moderate to avoid the adverse consequences caused by too much or too little pressure.

Anti-stick measures: Due to the ink absorption of coated paper is weak, the back is smooth, and it is easy to produce sticky and dirty problems when printing the layout with large amount of ink or multi-color overprinting. Therefore, anti-stick measures should be taken to overcome, such as the use of anti-stick agent stirred into the ink and then stirred, printing can receive a better anti-stick effect.

3. Configure and adjust devices

Selection of high-performance equipment: The selection of stable performance, high precision printing equipment to ensure the reliability of printing quality. For high-volume printing, you can consider using a printing line with a high degree of automation.

Equipment adjustment and maintenance: Complete inspection and adjustment of the equipment before printing to ensure that the components are in the best condition. Regular maintenance and maintenance of the equipment, including cleaning, lubrication and replacement of wearing parts, to extend the service life of the equipment and reduce the occurrence of failures.

4. Formulation of process route

Comprehensive consideration: According to customer requirements, label samples, equipment, materials and ink and other factors to develop a comprehensive consideration of the process route. Ensure that the process route is reasonable and meets the actual production needs.

Test verification: Before the formal production process test to verify the feasibility and stability of the process route. Identify potential problems through testing and solve them in time to ensure the smooth operation of mass production.

5. Post-processing and quality control

Laminating and die-cutting: post-processing such as laminating and die-cutting on self-adhesive labels as needed to improve the quality and aesthetics of labels. The film can increase the wear resistance and water resistance of the label; Die-cutting can be customized label shape and size according to customer requirements.

Quality inspection: Establish a perfect quality inspection system, and carry out strict quality inspection of printed products. Through sampling testing, visual inspection and other means to ensure that the quality of the label meets customer requirements. The unqualified products should be dealt with in time and the cause of the problem should be recorded for subsequent improvement.

Continuous improvement: According to customer feedback and market demand, continuous improvement of printing process and equipment configuration to improve the stability of self-adhesive label printing quality. Through technological innovation and management optimization, the competitiveness and market share of enterprises are continuously improved.

To sum up, ensuring the printing quality of self-adhesive coated paper is a comprehensive process, and comprehensive measures need to be taken from many aspects to ensure the stability and reliability of printing quality.