多段打浆法制备涤纶超短纤维基纸袋纸及其性能研究

Preparation and Properties of Polyester Ultra-short Fiber-based Sack Paper by Multi-stage Beating Method

关键词:  纸袋纸  透气度  打浆工艺  涤纶超短纤维

Key Words:sack paper  air permeability  beating process  polyester ultra-short fibers

摘要:以中浓、低浓打浆相结合的多段打浆工艺为基础，采用涤纶超短纤维与针叶木浆混抄方法，制备高透气度纸袋纸。结果表明，针叶木浆采用中浓（浆料浓度10%，打浆至18 ^oSR）+低浓（浆料浓度6%，打浆至20 ^oSR）两段打浆的方法，所抄纸张各项物理强度性能较佳且透气度可达11.23 μm/(Pa·s)。随着涤纶超短纤维添加量的提高，纸袋纸的孔隙率与透气度随之提高。当涤纶超短纤维添加量为5%~10%时，纸袋纸透气度可达28.13~47.48 μm/(Pa·s)，各项物理强度性能均能满足使用要求。

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.