a School of Environmental and Natural Resources, Zhejiang University of Science and Technology, Hangzhou,310023, China

b Winbon Schoeller New Materials Co., Ltd, Quzhou, 324400, China

This study explores the effects of paper making parameters (softwood pulp ratio, beating degrees) on medical dialysis base paper performance (air permeability, pore properties). In- creasing softwood pulp ratio enhances air permeability via better pore connectivity, while higher beating degrees reduce it due to denser pore structure. A predictive model using linear path function (L2) and pore connectivity index (S value) is developed. SEM and pore anal- ysis validate the mechanism, emphasizing the balance for ISO 11607 compliance. Results support process optimization and performance prediction.