Title:
METHOD FOR CUTTING OPTICAL FILM AND DEVICE EMPLOYING THE METHOD
Document Type and Number:
WIPO Patent Application WO/2010/021025
Kind Code:
A1
Abstract:
With regard to a grip roller (12) out of a pair of upper and lower grip rollers (11, 12) arranged in the upstream and downstream while holding the cutting part of an optical film (F) between, the central axis (C) of an upper roller (12b) is shifted from the central axis (L) of a drive roller (12a) in the direction receding from the cutting part. Grip timing of a polarization film (F) by the downstream grip roller (12b) is delayed by lowering both grip rollers (11b, 12a) simultaneously at the time of cutting the polarization film (F), and the polarization film (F) is pulled by the grip roller (12) in the direction receding from the cutting part and thereby a tension is imparted. Under that state, the polarization film (F) is cut by means of a laser device (10).
Inventors:
NAKAI KOUTA (JP)
KOZASA JUNPEI (JP)
TAKAHASHI YOSHIO (JP)
HOSOI MASAHIRO (JP)
KOZASA JUNPEI (JP)
TAKAHASHI YOSHIO (JP)
HOSOI MASAHIRO (JP)
Application Number:
PCT/JP2008/064746
Publication Date:
February 25, 2010
Filing Date:
August 19, 2008
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
AKEBONO MACHINE IND CO LTD (JP)
NAKAI KOUTA (JP)
KOZASA JUNPEI (JP)
TAKAHASHI YOSHIO (JP)
HOSOI MASAHIRO (JP)
AKEBONO MACHINE IND CO LTD (JP)
NAKAI KOUTA (JP)
KOZASA JUNPEI (JP)
TAKAHASHI YOSHIO (JP)
HOSOI MASAHIRO (JP)
International Classes:
B23K26/02; B23K26/38; B23K26/70; B26D7/06
Foreign References:
| JPH1158061A | 1999-03-02 | |||
| JP2008073742A | 2008-04-03 | |||
| JP2007296623A | 2007-11-15 | |||
| JPS4746948B1 | 1972-11-27 |
Attorney, Agent or Firm:
SUGITANI, Tsutomu (JP)
Tsutomu Sugitani (JP)
Tsutomu Sugitani (JP)
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