How to improve the color vividness of fast dry sublimation paper

To improve the color vividness and color fastness of fast dry sublimation paper, you can start from the following aspects:

1. Raw material control

Choose high-quality thermal sublimation dyes: select dyes with high purity and high color saturation, so that they can present brighter colors during transfer. At the same time, ensure that the dyes have good thermal stability and are not easy to decompose during high-temperature transfer to ensure color stability.

Select high-quality transfer paper base paper: The base paper should have high whiteness, which can better reflect the dye color and improve the color vividness. And it should have good flatness and uniformity to make the dye evenly distributed to avoid color difference. In addition, the strength of the base paper should be moderate to ensure that it is not easy to break during the transfer process.

2. Production process optimization

Improve the coating formula: Select coating materials with good compatibility with thermal sublimation dyes, and adjust the ratio through continuous experiments to improve the adhesion and stability of the dyes. Appropriately increase the coating thickness to carry more dyes and make the colors more saturated, but be careful not to affect the transfer effect and paper performance.
Optimize the dye coating process: Use advanced coating technology, such as micro-gravure coating, to ensure that the dye is evenly coated on the paper with consistent thickness. Strictly control the coating speed and temperature to allow the dye to better penetrate into the coating and enhance adhesion.
Accurately control the drying process: According to different coating and dye characteristics, select the appropriate drying method, such as hot air drying or infrared drying. Strictly control the drying temperature and time to avoid dye decomposition or discoloration due to excessive temperature or too long time.

3. Transfer process control
Reasonably set the transfer temperature and time: Determine the optimal transfer temperature and time through experiments to ensure that the dye is fully sublimated and transferred to the substrate, while avoiding adverse effects on color and color fastness due to excessive temperature or too long time. Ensure the temperature uniformity and time control accuracy of the transfer equipment to prevent local color unevenness or inconsistent color fastness.
Accurately control the transfer pressure: Select the appropriate transfer pressure to ensure that the dye is fully transferred and avoid deformation of the transfer paper and substrate. Ensure that the pressure of the transfer equipment is uniform to prevent improper local pressure from affecting the transfer effect.

4. Post-processing reinforcement
Perform color fixing treatment: Use color fixing agent or perform heat setting treatment on the substrate after transfer to improve the color fastness of the dye and prevent fading. Select the appropriate color fixing agent and color fixing process according to the characteristics of the substrate.
Implement surface treatment: The substrate can be coated or laminated to enhance its wear resistance, water resistance and light resistance, and further improve color fastness. Choose the appropriate surface treatment material and process to ensure that it does not affect the appearance and performance of the substrate.

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