Effects of Processing Parameters on the Physical Properties of Spunbounded and Melt Blown Nonwovens

스펀본드와 멜트블로운 부직포의 물리적 성질

The processing parameters of spunbonding and melt blowing technologies are major factors determining the physical properties of the resulted nonwovens. In this study, the effects of basis weight and calendering temperature on the physical properties of spunbonded nonwovens were examined. Twelve spunbonded polypropylene nonwovens were fabricated from three different calendering temperatures and four different basis weights. To evaluate the effects of basis weight on the physical properties of melt blown nonwovens, four polypropylene nonwovens having different basis weights were produced. A statistical model fitting by regression was employed to estimate the physical properties. Four physical properties of the spunbonded webs were simultaneously optimized to estimate the optimum calendering temperature and basis weight values for a strong, extensible, breathable and flexible nonwoven. Also, the linear relationships among the properties were examined by Pearson coefficients. The results indicated that the physical properties of the nonwovens were greatly influenced by the calendering temperatures and basis weights. The ratios of the strengths in machine direction and in cross direction were greatly influenced by the basis weights. This study suggested one way to optimize the processing parameters for the interpretation and prediction of the properties of nonwoven fabrics.