Title:
BLADE FOR CUTTING THIN BODY
Document Type and Number:
WIPO Patent Application WO/2010/087041
Kind Code:
A1
Abstract:
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.
Inventors:
TAKAHASHI MITSUHIRO (JP)
TAKAHASHI HIROMASA (JP)
TAKAHASHI HIROMASA (JP)
Application Number:
PCT/JP2009/059570
Publication Date:
August 05, 2010
Filing Date:
May 26, 2009
Export Citation:
Assignee:
TAKAHASHI KEISEI CORP (JP)
TAKAHASHI MITSUHIRO (JP)
TAKAHASHI HIROMASA (JP)
TAKAHASHI MITSUHIRO (JP)
TAKAHASHI HIROMASA (JP)
International Classes:
B26F1/44; B26F1/40
Foreign References:
| JP2004114207A | 2004-04-15 | |||
| JPH11188698A | 1999-07-13 | |||
| JPH02167692A | 1990-06-28 | |||
| JPH11313599A | 1999-11-16 | |||
| JP2004330364A | 2004-11-25 | |||
| JP2004338025A | 2004-12-02 | |||
| JPH07195298A | 1995-08-01 |
Attorney, Agent or Firm:
KUBOTA CHIKASHI (JP)
Kubota Chiga mind (JP)
Kubota Chiga mind (JP)
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