Plastic Tape Production Line

Plastic Tape Production Line

1.Extent coating and compound distance, more suitable for thermal paper adhesive produce and other temperature resistance material compound.

2.With high precision and hard strength stand wear and tear die, ensure 200m/min high speed coating efficiency, and extent die life.

Plastic Tape Production Line

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.

Plastic Tape Production Line

Characteristics of several coating methods -

Glue coating
This size coating is typically applied by two roll transfer. By adjusting the gap between the upper rubber roller and the coating roller, the amount of coating can be adjusted. The structure of the entire coating head portion is relatively complicated, and the processing precision and assembly precision of the rubber roller, the coating roller, the traction roller and the scraper are required, and the cost is relatively high. Since the coating machine mainly uses a high-precision optical roller for sizing coating, the coating effect is good, and the coating amount is adjusted by the gap between the sizing roller and the coating roller, and can also be coated. The micro-motion adjustment of the scraper is flexibly controlled, and the coating precision is high. It is currently the most widely used on coated composite equipment.

Anilox coating
This coating apparatus mainly uses a textured (concave-eye) coating roll for sizing coating. The coating is uniform and the coating amount is relatively accurate (but the coating amount is difficult to adjust). When coated with an anilox roll, the amount of coating is mainly related to the depth of the concave surface of the anilox roll and the accuracy of the type of glue. The deeper the depth of the concave surface of the anilox roll, the greater the amount of glue transferred from the concave eye to the substrate; conversely, the shallower the depth of the concave surface of the anilox roll, the amount of transfer to the substrate is correspondingly reduced. It also has a lot to do with viscosity. Too much viscosity and too small a glue is not conducive to the normal transfer of glue. Glue viscosity is easy to transfer, too thin is easy to flow, so that the glue is not uniform, easy to produce vertical or horizontal flow pattern. Therefore, once the type of the coated anilox roll and the glue are fixed, it is difficult to adjust the coating amount, which is also the main reason for the limitation of the application of the textured coating roller.

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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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