2024-07-31 Pageview:59
Water-based wax emulsion for printing glue, Tianshi printing glue wax additive has been maturely applied in the field of printing glue and water-based coatings to improve water resistance, surface smoothness, anti-adhesion, open time, etc.
The glue printing process uses special chemical gels to mix with dyes with high seamlessness. The dyes are firmly attached to the fabric through the medium of the gel. The glue printing process overcomes the limitations of water slurry printing.
The biggest advantage of the glue printing process is its wide application, beautiful colors, and high degree of restoration, but its printing process is more complicated than the water slurry printing process and the cost is relatively high. Adding a suitable anti-sticking wax emulsion can effectively solve the problem of adhesion of printing glue, ensure the quality of the printed pattern, and avoid fading, wrinkling, inaccurate printing patterns, poor pattern continuity, etc.
Why does the printing glue have adhesion?
First, it is caused by the production process. During production, the water in the glue evaporates continuously, the slurry gradually thickens, and the viscosity increases. The particle size of the scraper must be increased to cut off the excess slurry. However, the increase in force will cause the screen to deform elastically and produce pattern displacement. If the force of the ink scraper disappears, the edge of the pattern on the screen printing surface will stick to the slurry after the screen rebounds, so the adhesion of the printing paste affects the production quality.
Second, the problem with the raw materials of the printing paste. The main raw material of the printing paste is acrylic resin. The characteristics of the resin determine that if a harder resin is selected, the problem of stickiness can be solved, but the adhesion will drop seriously. If the adhesion is increased, a softer resin must be selected, but the soft resin is easy to stick back.
How to solve the problem of sticking back in the printing paste?
During the preparation of printing paste, it must be added during the slurry mixing process. Remember to add it before thickening. The wax emulsion in the water-based printing paste system has good compatibility with the printing paste resin. During the film forming process, the wax emulsion drifts to the surface of the coating and disperses evenly. A layer of wax protective film will be formed on the coating. At the same time, the temperature rises during the printing process, and the feel of the paste film is full, wear-resistant, waterproof, anti-fouling and scratch-resistant, and has high-temperature anti-adhesion properties. It can also improve the smoothness of the coating, greatly improving the glossiness of the paste during the printing process and ensuring the quality of the printed pattern.
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