目的 以黄麻纤维为原料，制备高透气度茶叶泡袋纸。方法 通过机械打浆处理和NaOH/尿素/ZnO水溶液改性处理，探索最佳打浆度和改性体系的最佳配比，对茶叶泡袋纸干抗张强度、湿抗张强度、 撕裂度、透气度、厚度和紧度等进行测定，并对茶叶泡袋纸进行初步应用和安全评价。结果 打浆度在45~70 ?SR之间的黄麻纤维均可制备性能良好的茶叶泡袋纸；当黄麻质量（绝干）为10 g，改性体系体积为500 mL时，NaOH、尿素、ZnO的最佳质量分数配比为6%∶10%∶0.4%，该条件下滤纸的透气度为3868.9 μm/(Pa?s)，抗张强度为0.60 kN/m。结论 改性茶叶泡袋纸的热浸泡效果优于未改性茶叶泡袋纸。热浸出物检测结果显示，重金属指标和感官指标均符合国标规定的生活饮用水要求，采用黄麻制备茶叶泡袋纸可行。

The paper aims to prepare tea bag paper of high air permeability from jute fiber. The optimum mixing ratio of modified system and the best pulping degree were explored by mechanical pulping and modification treatment of NaOH/Urea/ZnO aqueous solution. The changes of dry tensile strength, wet tensile strength, tear strength, air permeability, thickness and tightness of tea bag paper were measured. The tea bag paper also was made a preliminary application and safety evaluation. Tea bag paper with good performance can be prepared from jute fiber between 45~70 ?SR. The optimum ratio of the NaOH/Urea/ZnO m was 6%∶10%∶0.4%. The quality of jute (absolute dry) was 10 g, and the volume of the modified system was 500 mL. Under this condition, the permeability of filter paper was 3868.9 μm/(Pa?s), the tensile strength was 0.60 kN/m. After modification, the hot soak effect of tea bag paper is better than that of unmodified bag paper. The thermal extract test of tea bag paper results show that heavy metals index and sensory indexes accord with the requirement of national standard regulations of drinking water. It is feasible to prepare tea bag paper from jute.