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| Influences of Beating and Calendering on the Pore Structure of Packaging Base Paper and the Using Efficacy of Bio-based Oil-proofing Agents |
| Received:January 22, 2026 Revised:February 06, 2026 |
| DOI：10.11980/j.issn.0254-508X.2026.07.016 |
| Key Words:bio-based oil-proofing agent packaging base paper pore structure beating degree calendering |
| Author Name | Affiliation | Postcode | | Chen Nannan* | 1Paper Industry Productivity Promotion Center, Quzhou, Zhejiang Province, 324000 | 324400 | | Li Hongkai* | 1Paper Industry Productivity Promotion Center, Quzhou, Zhejiang Province, 324000
3School of Light Industry and Engineering, South China University of Technology, Guangzhou, Guangdong Province, 510640 | 510640 | | Liu Shuai | 1Paper Industry Productivity Promotion Center, Quzhou, Zhejiang Province, 324000 | 324400 | | Chen Langqian | 2China National Pulp and Paper Research Institute Co., Ltd., Beijing, 100102
3School of Light Industry and Engineering, South China University of Technology, Guangzhou, Guangdong Province, 510640 | 510640 | | Shi He | 1Paper Industry Productivity Promotion Center, Quzhou, Zhejiang Province, 324000 | 324400 | | Liu Wen | 1Paper Industry Productivity Promotion Center, Quzhou, Zhejiang Province, 324000
2China National Pulp and Paper Research Institute Co., Ltd., Beijing, 100102 | 100102 | | Zhang Lu | 4Zhejiang Wenbo New Material Co., Ltd., Quzhou, Zhejiang Province, 324000 | 324400 |
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| Abstract:In this study， softwood pulp was selected as raw materials to prepare packaging base paper through various beating and calendering processes， and oil-proofing paper was obtained after sizing with the bio-based oil-proofing agent. Combining pore structure characterization， oil-proofing grade testing， and mechanical property analysis， the three-dimensional pore structure of packaging base paper under different process conditions was deeply explored， and the influence of pore structure variation of packaging base paper on the using efficacy of bio-based oil-proofing agent was analyzed. The results indicated that when softwood pulp’s beating degree increased from 50 to 78 °SR， the average pore diameter of the prepared packaging base paper decreased significantly from 1.232 to 0.138 μm， resulting in a reduction in air permeability and an increase in density. Under the Kit 12 oil-proofing grade requirement， increasing the beating degree effectively reduced the usage of bio-based oil-proofing agent. The calendering process further optimized the pore distribution and surface smoothness of the packaging base paper. After calendering and sizing by bio-based oil-proofing agenty with at a low dosage of 0.55 g/m2， the prepared oil-proofing paper with softwood pulp’s beating degree of 78 °SR still achieved an oil-proofing grade of Kit 11. |
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