[Film Properties and Measurements] - film prepative

Film preparations

The national standard "GB1727-79 (88) General Preparative Method for Lacquer Film" lists the film prepative methods of brushing method, lame plating method, dip coating method and scraping method respectively. However, the preparation needs to rely on the technical proficiency of the operator, and the uniformity of the film is difficult to guarantee. The use of instrument prepative film is currently widely implemented, and the methods include swirl/spin paint method and scraper method.

Film preparation refers to the process of coating a specific material on a specific surface to form a coating. Film preparation can usually be carried out according to the following steps:

Surface preparation: Before filming, the surface to be coated needs to be treated to ensure the adhesion between the coating and the substrate and the film performance. Surface preparation includes cleaning, degreasing, sanding, derusting, etc.

Coating modulation: Mix the required Coating with solvents, auxiliaries, etc. to prepare a Coating suitable for Spreader. Coating modulation should consider its drying time, Color, gloss, hardness, durability and other characteristics as needed.

Spreader: The prepared Coating Spreader can be applied on the surface to be coated by different Spreader methods such as lame plating, brushing, roller coating, and spraying. During the Spreader process, it is necessary to control the thickness and uniformity of the Coating Spreader.

Drying: After the film Spreader, it needs to be dried under appropriate conditions to make the coating curing and form a stable film. Drying conditions include temperature, Humidity, ventilating, etc.

The film prepative process requires strict control of each link to ensure that the coating mass and performance meet the requirements. At the same time, it is also necessary to formulate suitable prepative methods and process flows for different types of Coatings and substrates.