It is suitable for manufacturing hot stamping film, laser film, gold and silver paperboard which need coating and laminating.
Characteristics of several coating methods -
Air knife coating:
1. Because it is a profile coating, it can provide better shielding performance than any known coating machine.
2. There is no mechanical contact in the metering method, and it will not cause scraping marks.
1. The solid content of the air knife coating coating formulation can not be made too high up to 48%, too high solid content will lead to too high viscosity of the coating will make the coating amount difficult to control.
2. Low solids content of the coating will cost a lot of drying costs
3. The low solid content of the coating results in poor water retention, and the coating shrinks severely during the drying stage, ultimately affecting the roughness of the coating.
4. Significant loss of paint, high water consumption, and high environmental pressure.
Metering bar coating:
1. Low requirements for base paper, can adapt to rougher base paper
2. Can adapt to high solid content coating
3. Better shielding
1. The adjustable amount of coating is worse than the scraper, and the typical value is 7-11 grams.
2. If you use a grooved stick, you will leave a lot of sticks.
3. When the required coating amount is relatively low, the metering rod is easily worn.
Zhengzhou EAST IMPORT AND EXPORT co., ltd . ( a goulian group of company) a manufacturer and exporter for all kind of packaging machinery , like bopp tape coating machines, bopp tape slitting machines. Bopp tape core cutter, bopp tape core loader etc