PROCESS AND APPARATUS FOR PRODUCING NANOFIBER AND POLYMER WEB

• Main Authors: TOMINAGA YOSHIAKI, TAKEZAWA MIKIO, ISHIKAWA KAZUNORI, SUMIDA HIROTO, KUROKAWA TAKAHIRO, TAKAHASHI MITSUHIRO
• Format: Patent
• Language: English; Korean
• Published: 30.07.2009
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; BRAIDING; COTTON-WOOL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS; KNITTING; LACE-MAKING; MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL; MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS; NATURAL OR ARTIFICIAL THREADS OR FIBRES; NON-WOVEN FABRICS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; SPINNING; TEXTILES; TRANSPORTING; TRIMMINGS; WADDING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

An electroconductive rotary vessel (1, 36) having a plurality of small holes (3) is rotated while supplying a polymer solution (11), prepared by dissolving a polymer material in a solvent, into the rotary vessel (1, 36). Electric charges are applied by electrifying means (14, 19) to the polymer solution (11) which flows from the small holes (3) in the rotary vessel (1, 36). The flowout linear polymer solution (11) is stretched by electrostatic explosion induced by centrifugal force and the evaporation of the solvent to produce nanofibers (f) formed of a polymer material. The nanofibers (f) in the course of the production thereof are allowed to flow so as to be deflected from one side to the other side in a shaft center direction of the rotary vessel (1, 36) by a reflection electron (16) and/or air blow means (34, 46, 59) and to be deposited to produce a polymer web, whereby nanofibers and a polymer web using the nanofibers can be produced with good productivity uniformly and in a simple construction.