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| Preparation and Properties of Polyester Ultra-short Fiber-based Sack Paper by Multi-stage Beating Method |
| Received:June 23, 2022 |
| DOI：10.11980/j.issn.0254-508X.2023.01.003 |
| Key Words:sack paper air permeability beating process polyester ultra-short fibers |
| Fund Project:生物基材料与绿色造纸国家重点实验室项目（ZZ20190204，ZZ20190201）。 |
| Author Name | Affiliation | Postcode | | LI Haiqiu* | State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong Province , 510640 | 510640 | | YANG Rendang | State Key Lab of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong Province , 510640 | 510640 | | WANG Jianhui | Guangdong Yingtong Paper Co., Ltd., Jiangmen, Guangdong Province, 529000 | 529000 | | ZHANG Zhili* | State Key Lab of Bio-based Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Ji’nan, Shandong Province, 250353 | 250353 |
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| Abstract:Based on the multi-stage beating process with a combination of medium and low consistency beating process， a high permeability sack paper was prepared by blending polyester ultra-short fibers and softwood pulp. The results showed that the paper prepared by the two-stage beating process of medium consistency （pulp consistency of 10%， beating degree of 18 oSR） and low consistency （pulp consistency of 6%， beating degree of 20 oSR） had better physical strength properties with air permeability of 11.23 μm/（Pa·s）. With the increase of polyester ultra-short fibers dosage， the porosity and air permeability of sack paper increased. When the dosage of polyester ultra-short fibers was 5%~10%， the air permeability of the sack paper could reach 28.13~47.48 μm/（Pa·s）， and all of the physical strength properties could meet the requirements. |
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