高透气度医用包装纸浸渍增强工艺及其性能研究

Impregnation and Reinforcement Process and Properties of Highly Breathable Medical Packaging Paper

关键词:  医用包装纸  高透气度  力学性能  亲疏水性能  浸渍工艺

Key Words:Medical packaging paper  high breathability  mechanical properties  hydrophilic and hydrophobic properties  impregnation process

摘要:针对医用包装纸透气度与力学性能难以平衡,以及剥离过程易破纸和产生碎屑的问题,论文以高透气度原纸为基材、改性丙烯酸酯酯共聚胶乳进行浸渍增强研究,旨在保留透气度,提升力学性能,调控表面亲疏水性能。结果表明,浸渍液浓度调控幅度分别为浸渍温度的7.8倍、浸渍时间的12.3倍；微观形貌观察结果表明胶乳包覆纤维表面并填充孔隙,有效规整了内部孔隙分布,纸张透气度及孔隙结构均匀性显著改善,纸张变异系数显著降低。综合透气、力学性能及亲疏水性能分析,确定浸胶量12~15 g/m²,浸胶纸可同时满足Cobb60值、透气度、抗张强度、耐破度及撕裂度企业标准。

Abstract:The paper addresses the challenge of balancing air permeability and mechanical properties in medical packaging paper, as well as the issues of paper tearing and debris generation during the peeling process. Using high-air-permeability base paper as the substrate, the study investigates impregnation and reinforcement with a modified acrylic copolymer latex, aiming to preserve air permeability, enhance mechanical properties, and modulate surface hydrophilicity and hydrophobicity. The results indicate that the range of adjustment for impregnation solution concentration was 7.8 times that of the impregnation temperature and 12.3 times that of the impregnation time. Microscopic observations revealed that the latex coated the fiber surfaces and filled the pores, effectively regularizing the internal pore distribution. This led to significant improvements in the paper’s air permeability and pore structure uniformity, as well as a significant reduction in the paper’s coefficient of variation. Based on a comprehensive analysis of air permeability, mechanical properties, and hydrophilic/hydrophobic properties, the optimal latex application rate was determined to be 12~15 g/m². Paper treated with this latex coating simultaneously meets the enterprise standards for Cobb 60 value, air permeability, tensile strength, bursting strength, and tear resistance.