How is the adhesion of the coating when Laminated Coated Paper is used on KT board?
Publish Time: 2024-10-21
When Laminated Coated Paper is applied to KT board (Kraft Board or Polystyrene Foam Board, usually used for advertising, exhibitions, etc.), the adhesion of the coating is a crucial performance indicator. The adhesion of the coating directly affects the quality, durability and appearance of the final product.
1. Selection of coating materials
Coating type: Different coating materials (such as polypropylene, polyurethane, etc.) have different adhesion. Choosing the appropriate coating material can enhance the adhesion.
Water-based vs. oil-based coatings: Water-based coatings usually have stronger adhesion on KT boards because they have better penetration into the substrate. Although oil-based coatings have high gloss, they may have poor adhesion in some cases.
2. KT board surface treatment
Cleanliness: The cleanliness and oil-freeness of the KT board surface are the key to affecting the adhesion of the coating. Any surface contaminants (such as dust, grease) will lead to reduced coating adhesion.
Surface roughness: The surface roughness of the board can affect the mechanical bite of the coating. Appropriate surface treatment (such as sanding, chemical treatment) can improve adhesion.
3. Coating thickness and uniformity
Coating thickness: Appropriate coating thickness helps to enhance adhesion. Too thick coating may cause cracking or peeling, while too thin coating may not form an effective protective layer.
Coating uniformity: Uniform coating can avoid local poor adhesion and thus improve overall adhesion.
4. Curing process
Drying and curing: The drying and curing process of the coating is crucial to adhesion. Appropriate curing time and conditions can ensure that the coating is fully adhered to the surface of the KT board.
Use UV curing technology: For some types of coatings, using UV curing can enhance adhesion and ensure the hardness and wear resistance of the coating.
5. Testing and evaluation
Adhesion test: The adhesion of the coating can be evaluated by methods such as peel test or scratch test. Standardized tests can provide objective data to judge the performance of the coating.
Environmental adaptability test: Adhesion tests under different environmental conditions (such as temperature and humidity changes) can evaluate the long-term performance and stability of the coating.
6. Application areas
Display and advertising: In the field of advertising and exhibition, Laminated Coated Paper is often used to make exhibition boards, such as displaying images, text, etc. Good adhesion ensures that the visual effect is not damaged.
Protective use: Used to protect the surface of KT board to prevent scratches and pollution.
The adhesion of Laminated Coated Paper on KT board is a comprehensive performance determined by multiple factors. When selecting coating materials and their processes, it is necessary to comprehensively consider coating materials, KT board surface treatment, coating thickness and uniformity, curing process and other aspects to ensure good adhesion and the quality of the final product. Through scientific testing and evaluation, it can be verified whether the adhesion of coated paper meets the requirements of specific applications to ensure the use effect and durability.
