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| Research on the Enhancement of Moisture-locking Performance of Moisturizing Tissue |
| Received:May 12, 2025 Revised:May 31, 2025 |
| DOI：10.11980/j.issn.0254-508X.2025.07.012 |
| Key Words:beating degree moisture-locking performance cream wet strength agent |
| Author Name | Affiliation | Postcode | | LYU Xiaofeng* | Zhejiang Jingxing Paper Industry Co., Ltd., Pinghu, Zhejiang Province, 314214 | 314214 | | NI Jianping | China National Pulp and Paper Research Institute Co., Ltd., Beijing, 100102
National Engineering Lab for Pulp and Paper Industry, Beijing, 100102 | 100102 | | FAN Shujie | China National Pulp and Paper Research Institute Co., Ltd., Beijing, 100102
National Engineering Lab for Pulp and Paper Industry, Beijing, 100102 | 100102 | | CHENG Zhengbai | Zhejiang Jingxing Paper Industry Co., Ltd., Pinghu, Zhejiang Province, 314214 | 314214 | | SUN Yanping | Zhejiang Jingxing Paper Industry Co., Ltd., Pinghu, Zhejiang Province, 314214 | 314214 | | LU Bin | Zhejiang Jingxing Paper Industry Co., Ltd., Pinghu, Zhejiang Province, 314214 | 314214 | | ZHOU Pingyan | Zhejiang Jingxing Paper Industry Co., Ltd., Pinghu, Zhejiang Province, 314214 | 314214 | | SU Zhenhua* | China National Pulp and Paper Research Institute Co., Ltd., Beijing, 100102
National Engineering Lab for Pulp and Paper Industry, Beijing, 100102 | 100102 |
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| Abstract:Within the recommended range， the moisturizing-locking performance of lab-grade moisturizing tissue increased with beating degree， reaching a peak value of 83.8% at a low-load beating level of 35 °SR. Since beating degree offered limited gains in wet strength， PAE 2 was introduced （20 kg/t pulp）， significantly improving the wet tensile index and wet/dry ratio to 5.44 N·m/g and 13.6%， respectively. Wanfang cream （25% addition ） demonstrated excellent moisture-locking performance， achieving to 80.8%. Based on lab results， production trials were conducted with optimized beating processes： The long-fiber disc refiner configuration was adjusted from a single unit at 75 kWh/t to two 40 kWh/t units in series， the homogenizing refiner power was controlled at 18 kWh/t， and pulp flow rates and recirculation were adjusted. Trial-produced moisturizing base tissue showed significant improvements in bulk， dry tensile index （MD/CD）， softness， and transverse liquid absorption height， approaching or reaching benchmark levels. The corresponding moisturizing tissue exhibited substantially enhanced moisturizing-locking performance： Trial—produced moisturizing tissue （trial—1， trial—2） achieved 1 h moisturizing-locking performance of 68.1% and 70.8% （baseline of 46.0%； benchmark of 52.7%）， 2 h moisturizing-locking performance of 65.8% and 67.5% （baseline of 42.2%； benchmark of 50.0%）， and 3 h moisturizing-locking performance of 60.1% and 63.3% （baseline of 35.7%； benchmark of 46.6%）， far exceeding both the baseline and benchmark. |
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