100GSM Sublimation Printing Paper

Principles and challenges of glass sublimation transfer printing: The essence of sublimation transfer printing is the penetration of gaseous ink molecules into the polymer coating that softens upon heating and solidifies. Glass itself is an inorganic substance, with a dense, smooth, and pore free surface. Even at high temperatures, gaseous molecules of sublimation ink cannot penetrate.

Therefore, to achieve thermal sublimation on glass, it is necessary to create an "intermediate layer" that can "receive and lock" ink molecules - the thermal sublimation coating.

Main challenges:

1. Adhesion issue: The choice of coating is crucial. It must be able to firmly adhere to a smooth glass surface and cannot easily detach.

2. Temperature resistance: The coating should be able to withstand high temperatures of nearly 200 ° C without yellowing, decomposition, or other chemical changes.

3. Transparency and color rendering: Glass is usually transparent. If you want the pattern to be bright, you must first apply a layer of white substrate to the glass before transfer printing, otherwise the pattern will appear dull and unclear due to the transparent background.

4. Uniformity: It is difficult to ensure absolute uniformity in manually sprayed coatings, and any slight difference in thickness can lead to uneven color in the final product.