BLADE FOR CUTTING THIN BODY

WIPO Patent Application WO/2010/087041

A1

A blade for cutting a thin body, capable of smoothly punching the thin body and allowing a punched-out product (such as precision optical film) punched out of the thin body to be smoothly removed from the punch edge. A blade for cutting a thin body, formed by cutting a metallic block or a metallic plate as the raw material and provided with a punch edge.  Cut streaks formed on either one and/or the other of the side surfaces of the punch edge are formed in such a manner that the cut streaks are perpendicular to the tip line of the punch edge or that the angle of the cut streaks relative to the tip line is not less than 45 degrees but less than 90 degrees.  Also, the blade can have punch edges formed in steps.  In this case, the blade is configured in such a manner that the cut streaks formed on either one and/or the other of the side surfaces of each of all the steps or any of the steps are arranged so as to be perpendicular to the tip line of the punch edge or to be tilted relative to the tip line at an angle not less than 45 degrees but less than 90 degrees.

TAKAHASHI Mitsuhiro (1-35 Zao-Matsugaoka 1-chome, Yamagata-sh, Yamagata 38, 〒9902338, JP)
高橋　光弘 (〒38 山形県山形市蔵王松ヶ丘１丁目１番３５号　株式会社高橋型精内 Yamagata, 〒9902338, JP)

JP2009/059570

August 05, 2010

May 26, 2009

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Takahashi Keisei Corporation (1-35, Zao-Matsugaoka 1-chome Yamagata-sh, Yamagata 38, 〒9902338, JP)
株式会社高橋型精 (〒38 山形県山形市蔵王松ヶ丘１丁目１番３５号 Yamagata, 〒9902338, JP)
TAKAHASHI Mitsuhiro (1-35 Zao-Matsugaoka 1-chome, Yamagata-sh, Yamagata 38, 〒9902338, JP)

B26F1/44; B26F1/40

KUBOTA Chikashi (1710, White Tower Hamamatsucho 13-2, Hamamatsucho 1-chome, Minato-k, Tokyo 04, 〒1050004, JP)

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