Method for improving the retention of titanium dioxide on decorative base paper
By using a combination of liquid polyaluminum chloride, polyamide epichlorohydrin resin, and polyacrylamide in the production of decorative base paper, the zeta potential and flocculation process of the pulp were adjusted, solving the problem of low titanium dioxide retention and achieving improved titanium dioxide utilization and reduced costs.
CN122406584APending Publication Date: 2026-07-17SUNSHINE WANGZI (SHOUGUANG) SPECIAL PAPER CO LTD +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SUNSHINE WANGZI (SHOUGUANG) SPECIAL PAPER CO LTD
- Filing Date
- 2026-06-17
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Traditional sulfuric acid systems result in low titanium dioxide retention rates in decorative base paper production, leading to increased raw material costs and excessive workload on white water treatment.
Method used
By using a combination of liquid polyaluminum chloride, polyamide epichlorohydrin resin and polyacrylamide, the retention rate of titanium dioxide in pulp is improved by adjusting the zeta potential and flocculation process of the pulp.
Benefits of technology
It significantly improves the utilization rate of titanium dioxide, reduces raw material consumption and white water solids load, and slightly reduces the physical strength of paper, but this can be compensated for through optimization within the standard range.
✦ Generated by Eureka AI based on patent content.
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Abstract
本发明属于装饰原纸制备技术领域，具体涉及一种提高装饰原纸钛白粉留着率的方法，向装饰原纸的打浆浆料中加入钛白粉，混合均匀，得混合浆料；向混合浆料中加入液体聚合氯化铝，混匀，使混合浆料的Zeta电位达到‑10mV至+10mV，且不等于0mV；液体聚合氯化铝的碱化度为50%‑70%，Al2O3的质量百分含量为10%‑18%；然后向混合浆料中加入聚酰胺环氧氯丙烷树脂，混匀后，再向其中加入聚丙烯酰胺，加入聚丙烯酰胺后，搅拌设定时间；最后进行抄制。由于PAC具有高于硫酸的阳离子电荷密度和更优的絮凝形态，能更有效地中和并捕捉带负电的钛白粉颗粒，将其固定在纤维上，使钛白粉单程留着率显著提升。
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