Preparation Process Of Color-coated Rolls

Surface pretreatment: Treating the substrate through chemical degreasing and chemical conversion treatments.
Coating preparation: After surface pretreatment, one or several layers of organic coatings are applied to the surface of the substrate.
Bake curing: After applying the organic coating, the coating is cured by baking to form the final product.
Anti-corrosion effect of organic coating:
Organic coatings can provide a certain degree of corrosion protection, but there may be some small gaps in the coating that allow air and moisture to enter, causing the substrate to rust.

The importance of substrate selection:
Color-coated coils made of uncoated substrates have a short service life and are prone to spreading after scratches, causing the coating to peel off. Therefore, controlling the quality of the substrate has an important impact on the quality and service life of the product.
Coating types and processes:
Organic coatings are divided into primers and topcoats. The requirements for primers are lower, and now color reverse coating is generally used. Post-coating processes include printing, embossing, peelable protective film, lamination, etc. These processes can increase the decorative and protective properties of color-coated boards.
Diversity of post-coating processes:
Post-coating processes include not only common printing, embossing, etc. but also other processes such as peelable protective films, lamination, etc. These processes can further improve the performance and application range of color-coated boards.

In general, controlling the chemical properties and quality of color-coated rolls, especially the selection of substrates and optimization of the coating process, are crucial to improving the performance and service life of the product.