Why does high-speed sublimation paper warp?

High-speed sublimation paper is one of the important consumables of the sublimation process. Sublimation transfer is to use an inkjet printer equipped with sublimation transfer ink to print portraits, landscapes, texts and other images on inkjet paper for sublimation transfer in a mirror image, and then heat it to about 200°C through the thermal transfer equipment to make the thermal transfer ink on the sublimation paper sublimate and penetrate into the substrate, so as to realistically transfer the color image on the paper to textiles, porcelain cups, porcelain plates, porcelain plates, metals and other materials. During the storage and use of sublimation transfer paper, the edge of the paper often warps. This situation has a great negative impact on digital printing. The warping of the edge of the paper can easily cause difficulty in feeding paper during printing, and then cause paper jams, scratches on the nozzle, etc. Scratching the nozzle will not only affect the printing effect, but also cause blurred patterns, ink piles, etc., and also have a very adverse effect on the printing equipment. Scratching the nozzle may cause serious consequences such as damage to the print nozzle and reduced service life of the printing equipment. At the same time, the warping of the paper edge can easily cause problems such as difficulty in winding. So why does the sublimation transfer paper curl? The warping of the sublimation transfer paper is mainly due to the different absorption of moisture in the air by the coated and uncoated surfaces of the transfer paper, resulting in inconsistent expansion and contraction of the two sides. Generally speaking, the uncoated surface of the sublimation transfer paper is more likely to absorb moisture, causing the paper to expand and contract more, so it curls toward the coated surface. In order to reduce this situation, high-quality transfer paper will also be coated on the back of the paper to alleviate the warping problem of the transfer paper.

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