B - Operations – Transporting – 24 – B
Patent
B - Operations, Transporting
24
B
B24B 37/00 (2006.01) D04H 1/42 (2006.01)
Patent
CA 2564138
An abrasive cloth which comprises an article in a sheet form having, in at least a part thereof, nano-fibers comprising a thermoplastic polymer and having a number average single fiber fineness of 1 × 10-8 to 2 × 10-4 dtex wherein the sum of single fiber fineness percentages (which is defined in the specification) of a single fiber fineness of 1 × 10-8 to 2 × 10-4 dtex is the range of 60 % or more, and exhibits a stress at 10 % elongation in a longitudinal direction of 5 to 200 N/cm-width; and a method for preparing a nano-fiber structure, which comprises providing a nano-fiber dispersion having a dispersant and, dispersed therein, nano-fibers comprising a thermoplastic polymer and having a number average diameter of 1 to 500 nm, attaching the dispersion to a support, and then removing said dispersant. The above abrasive cloth is excellent in polishing characteristics, and the above method allows the preparation of a nano-fiber structure wherein nano-fibers form a composite with the support.
Il est prévu un tissu abrasif comprenant un article en forme de feuille possédant, dans au moins une partie de celui-ci, des nanofibres comprenant un polymère thermoplastique et ayant une finesse de fibre simple d~indice moyen de 1 × 10?-8¿ à 2 × 10?-4¿ dtex, où la somme des pourcentages de finesse de fibre simple (qui est définie dans la spécification) d~une finesse de fibre simple de 1 × 10?-8¿ à 2 × 10?-4¿ dtex est de l~ordre de 60 %, voire davantage, et présente une contrainte à un allongement de 10 % suivant une direction longitudinale de 5 à 200 N/cm de largeur ; et un procédé d'élaboration d~une structure à nanofibre, consistant à prévoir une dispersion de nanofibre ayant un dispersant et, dispersés dans celle-ci, des nanofibres comprenant un polymère thermoplastique et ayant un diamètre moyen de 1 à 500 nm, fixant la dispersion à un support, avant de retirer ledit dispersant. Le tissu abrasif ci-dessus a d~excellentes propriétés de polissage, et le procédé ci-dessus permet l~élaboration d~une structure à nanofibre dans laquelle les nanofibres forment un composite avec le support.
Matsunase Takeo
Naruse Yoshihiro
Nonaka Shuichi
Ochi Takashi
Smart & Biggar
Toray Industries Inc.
LandOfFree
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