Drywall Corner Tape Coating Machine

Drywall Corner Tape Coating Machine


1. It is provided with anilox roller plus blade for coating mode, and also provided with many selection opportunities of anilox roller with various coating amount. 

2. It is provided with separate five-section type constant temperature drying system using infrared stainless steel heating tube plus beating wind, as wellas adjustable interior circulation air draining and suction devices. It is advantageous in strong wind-exit and wind entrance, helping drying thoroughly. 
 

Drywall Corner Tape Coating Machine

Characteristics of several coating methods -

1. Characteristics of air knife coating process:
The advantage of air knife coating is that a thick coating amount can be obtained, the coating layer is relatively uniform, and paper breakage is less likely to occur during coating. The disadvantage is that since the coater of the coater is an invisible air knife, it is necessary to require the paint to be soft and easy to control in order to scrape off excess paint and smooth the coating. In addition, the air knife formed by the air jet is more likely to cause the splash phenomenon of the paint, and the splash of the paint easily causes partial clogging of the air knife gap, resulting in unevenness of the coating layer.

Scraper coating:
advantage:
1. Can make the paper get higher smoothness and gloss
2. The operability is higher than the air knife and the measuring rod, and the adjustment precision is higher than the latter two.
Disadvantages:
1. High requirements for base paper (to have good flatness, smoothness, sizing degree, etc.)
2. If it is used for topcoating, it also has higher requirements for lining (lower macroscopic roughness, but with appropriate micro-roughness)
3. This performance is good without air knives and measuring rods.
4. Easy to scratch the knife.

Drywall Corner Tape Coating Machine

Characteristics of several coating methods -

Air knife coating:
advantage:
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.
Disadvantages:
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:
Advantages:
1. Low requirements for base paper, can adapt to rougher base paper
2. Can adapt to high solid content coating
3. Better shielding
Disadvantages:
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.

About

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

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