闪蒸纺丝法制备医用包装材料的研究进展

Research progress in non⁃woven materials fabricated by flash⁃spinning process for medical packaging use

为保证医疗器械和医卫用品在运输、储存和使用过程中的安全性和无菌性,同时满足不同应用中对医用包装材料多样灭菌方式的需求,利用闪蒸纺丝工艺可以生产独特的高密度聚乙烯无纺布包装材料。探讨了闪蒸纺丝工艺中溶剂体系的选择方法及具体的工艺流程,讨论了闪蒸纺丝过程中纺丝溶液相分离以及溶剂超音速蒸汽流等现象的基本原理。同时,梳理了国产闪蒸纺丝法相关工艺及无纺布材料,总结了杜邦公司特卫强Tyvek^((R))系列医用包装材料产品的性能参数和评价标准,并分析了材料的应用性能,以期为闪蒸纺丝工艺及医用无纺布包装材料的发展提供理论和技术参考。

A higher standard for medical packaging materials can meet a requirement for packaging safety,sterility,and multiple sterilization compatibility in various application scenarios.Therefore,high⁃density polyethylene non⁃woven packaging materials with robust properties fabricated by the flash⁃spinning process have attracted tremendous attention from academic and industrial fields.This review introduced the selection of solvent systems,specific process flow,basic principles of phase separation,and solvent supersonic steam flow in the flash⁃spinning process.Meanwhile,the domestic flash⁃spinning⁃related techniques and corresponding non⁃woven materials were discussed in detail.Moreover,the parameters and evaluation criteria of Du Pont Tyvek^((R))serial products were summarized,and the application performance of the materials was analyzed.This may provide theoretical and technical references for the development of the flash⁃spinning process and medical non⁃woven packaging materials.