High-gloss high-whiteness thermal sublimation photo paper and preparation method thereof

By employing a honeycomb mesh substrate and multi-layer coating design in the thermal sublimation photographic paper, the problems of insufficient whiteness and gloss in existing technologies have been solved, achieving high whiteness, high gloss, and color stability, thereby improving print quality and structural stability.

CN122190081APending Publication Date: 2026-06-12HUNAN DINGYIYUAN TECH DEV CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUNAN DINGYIYUAN TECH DEV CO LTD
Filing Date
2026-04-01
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

Existing dye-sublimation photographic paper cannot achieve both high whiteness and high gloss, has insufficient dye acceptance, poor printing uniformity and color stability, lacks structural support design, and is prone to paper jams or component wear problems.

⚗Method used

The printing layer adopts a honeycomb mesh structure and combines a multi-layer coating design, including a substrate, a base coat, a printing layer, an intermediate layer, and a backing paper. Specific resins, pore-forming agents, and wetting agents are used to optimize the coating process, ensuring porosity and density, enhancing dye adsorption and fixation capabilities, and improving gloss and whiteness.

🎯Benefits of technology

It achieves high whiteness (≥95%) and high gloss (≥85GU), improves dye acceptance and color stability, enhances printing operation convenience and structural stability, and avoids paper jams and wear problems.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present application relates to the technical field of heat sublimation paper, and in particular to a high-gloss high-whiteness heat sublimation paper and a preparation method thereof.The whiteness of the base material of the heat sublimation paper is 80-100;one side of the base material is provided with a primer layer, the other side is provided with a backing paper, and the primer layer is provided with a printing layer;the printing layer has a honeycomb network structure, a porosity of 30-40%, and a pore size of 0.1-0.3μm.The honeycomb network structure of the printing layer can control the porosity by controlling the crosslinking degree, achieving the purpose of balancing dye adsorption and surface densification;it can also maintain high gloss, high dye acceptance and high color stability;the synergistic effect of the multi-layer structure can achieve the purpose of balancing whiteness, gloss, color saturation and stiffness.
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