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| Research on Preparation Technology, Characteristics and Applications of Dry-process Recycled Pulp |
| Received:December 07, 2025 Revised:January 07, 2026 |
| DOI：10.11980/j.issn.0254-508X.2026.03.012 |
| Key Words:dry-process recycled pulp fiber morphology production process physical properties |
| Fund Project:广东省自然科学基金项目（2021A1515010538）；制浆造纸工程国家重点实验室项目（2020ZD02）；国家重点研发计划（2018YFC1902102）。 |
| Author Name | Affiliation | Postcode | | WANG Chunyu* | 1State Key Lab of Advanced Papermaking and Paper-based Materials, South China University of Technology, Guangzhou, Guangdong Province, 510640
2College of Light Industry and Engineering, South China University of Technology, Guangdong, Guangzhou Province, 510640 | 510640 | | SU Zute | 1State Key Lab of Advanced Papermaking and Paper-based Materials, South China University of Technology, Guangzhou, Guangdong Province, 510640
2College of Light Industry and Engineering, South China University of Technology, Guangdong, Guangzhou Province, 510640 | 510640 | | YE Yong | 1State Key Lab of Advanced Papermaking and Paper-based Materials, South China University of Technology, Guangzhou, Guangdong Province, 510640
2College of Light Industry and Engineering, South China University of Technology, Guangdong, Guangzhou Province, 510640 | 510640 | | FANG Wentao | 1State Key Lab of Advanced Papermaking and Paper-based Materials, South China University of Technology, Guangzhou, Guangdong Province, 510640
2College of Light Industry and Engineering, South China University of Technology, Guangdong, Guangzhou Province, 510640 | 510640 | | CHEN Gang* | 1State Key Lab of Advanced Papermaking and Paper-based Materials, South China University of Technology, Guangzhou, Guangdong Province, 510640
2College of Light Industry and Engineering, South China University of Technology, Guangdong, Guangzhou Province, 510640
3Guangdong Engineering Technology Research and Development Center of Specialty Paper and Paper-based Functional Materials, Guangzhou, Guangdong Province, 510640 | 510640 |
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| Abstract:Based on relevant industry standards， this paper systematically analyzed the production process of dry-process recycled pulp， a topic of growing interest， and comprehensively evaluated its fiber morphological characteristics， contaminant content， mechanical properties， microbial distribution， and heavy metal content. The results showed that among the dry-process recycled pulp， three experimental samples exhibited average fiber lengths exceeding 1.00 mm (with one sample measuring 0.97 mm)， an average aspect ratio greater than 40， and burst indices of paper sheets above 1.30 kPa·m²/g. Several performance indicators were superior to those of conventional eucalyptus pulp. No pathogenic microorganisms were detected in the samples， and the total bacterial count decreased by two orders of magnitude after sheet formation. The contaminant content in all samples remained below 0.5%， meeting GB/T 43393—2023 requirements. |
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