Improvement of Mechanical Properties of Polylactide (PLA) Spunbonds with a Trial Needle Processing Machine

A new type of needle processing machine; needle pricker has been developed. The principle of needle pricker is different from that of conventional raising machine. The principle is to pierce ultra fine and barbed needle tips to process fabric and modify the surface and structure to render soft and voluminous hand. The effects of needle processing on the structure of polylactide spunbonds were examined by means of the changes in mechanical properties. Needle processing lost the tensile strength of polylactide spunbonds, but hand of polylactide spunbonds was improved.