How is the anti UV coating attached to BOPP thermosensitive synthetic paper?

The process of attaching anti UV coatings to BOPP thermosensitive synthetic paper usually involves multiple steps, which ensure that the coating can uniformly and firmly adhere to the surface of the paper and provide effective UV protection. The following is a general process:

1、 Preparation of coating materials

Choose anti UV agents: Choose efficient UV absorbers or shields that can absorb or reflect UV rays, thereby protecting BOPP thermal synthetic paper from UV damage.

Formula formulation: Mix the anti UV agent with other necessary additives (such as dispersants, leveling agents, crosslinking agents, etc.) to ensure uniform distribution and firm adhesion of the coating on the surface of the paper.

2、 Coating preparation

Dissolve and Mix: Dissolve the anti UV agent and additives in a suitable solvent and mix thoroughly to form a uniform coating solution.

Filtering: Removing impurities and particles from the solution through a filtering device to ensure the purity and uniformity of the coating.

3、 Coating application

Pre treatment: Pre treat BOPP thermosensitive synthetic paper, such as corona treatment, to improve the surface wettability and coating adhesion of the paper.

Coating: use coating equipment (such as scraper coating, roller coating, spray coating, etc.) to evenly coat the coating solution on the paper surface. The coating amount should be adjusted according to the specifications of the paper and the required UV protection level.

Drying and curing: Send the coated paper into an oven for drying and curing treatment. During this process, the solvent will evaporate, and the coating material will form a dense film that firmly adheres to the surface of the paper.

4、 Quality inspection

Appearance inspection: Check whether the coating is uniform, flat, and free of defects such as bubbles and cracks.

Performance testing: Evaluate key indicators such as UV resistance, weather resistance, and wear resistance of coatings through professional testing equipment and methods.

5、 Post processing (optional)

Protective layer coating: In order to further improve the durability and protective effect of the coating, an additional protective layer can be applied on top of the UV resistant coating.

Roll up and cutting: Roll up and cut the coated BOPP thermosensitive synthetic paper to meet subsequent processing and usage needs.

Matters needing attention

The selection of coating materials: It should be ensured that the coating materials have good compatibility and stability to avoid negative effects on the performance of BOPP thermosensitive synthetic paper.

Control of coating process: During the coating process, parameters such as coating speed, coating amount, and drying temperature should be strictly controlled to ensure the quality and uniformity of the coating.

Environmental protection: In the process of coating preparation and application, relevant environmental regulations and standards should be followed to reduce the impact on the environment.

In summary, the process of attaching anti UV coatings to BOPP thermal synthetic paper involves multiple steps such as coating material preparation, coating preparation, coating application, quality inspection, and post-processing. Through strict process control and quality inspection, it can be ensured that the coating has good UV resistance and durability.