Title:
FILM ROLL AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2020/110643
Kind Code:
A1
Abstract:
This film roll comprises a thermoplastic resin film having a thickness of 250 µm or less. Both the maximum value and the minimum value of the surface potential of the film roll measured at intervals in the width direction of 50 mm are -10 to +10 kV, and the difference between the maximum value and the minimum value of the surface potential is 5 kV or less. This manufacturing method is designed to manufacture a film roll comprising a thermoplastic resin film having a thickness of 250 µm or less, the method comprising the steps of: placing a static elimination device within 5 m from a winding contact point and neutralizing the charge on the thermoplastic resin film; and winding the neutralized thermoplastic resin film. The distance between a discharge unit of the static elimination device and the thermoplastic resin film is 30 to 100 mm.
Inventors:
IDEI HIROAKI (JP)
HAGIWARA MASAAKI (JP)
FUJII NARIAKI (JP)
HAGIWARA MASAAKI (JP)
FUJII NARIAKI (JP)
Application Number:
PCT/JP2019/043523
Publication Date:
June 04, 2020
Filing Date:
November 06, 2019
Export Citation:
Assignee:
KURARAY CO (JP)
International Classes:
B65H18/08; H05F3/04
Domestic Patent References:
| WO2013084988A1 | 2013-06-13 |
Foreign References:
| JP2002240995A | 2002-08-28 | |||
| JP2002140811A | 2002-05-17 | |||
| JP2008081274A | 2008-04-10 | |||
| JP2003171038A | 2003-06-17 |
Attorney, Agent or Firm:
OHTANI PATENT OFFICE (JP)
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