Static Electricity and Airflow Methods for Producing Nonwoven Fabric with a Random Fiber Arrangement

摘要

Electrostatic induction and airflow systems were fitted under the doffer or between the cylinder and doffer of the roller card to produce nonwoven webs with fibers semi-randomly arranged such that cross directional strength was better than conventional carded webs. After the electrostatic or airflow action, the fiber arrangements of web tended to form a randomly arrangement structure. These systems also reached the purpose of producing a semi-random arrangement that further reduced the machine direction/cross direction (MD/CD) ratio of tensile strength. In this study, the defect of strength in CD and the MD/CD strength ratios were improved after application of the electrostatic and airflow systems. The MD/CD strength ratio improved to 3～5:1 from the original 6:1.