Title:
FILM ROLL AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2018/216590
Kind Code:
A1
Abstract:
A film roll comprises a winding core and a long resin film wound on the winding core. The resin film includes a concavo-convex structure part at an end in a width direction thereof. The resin film has a first region including a start end in a winding direction thereof and a second region adjacent to the first region and including a terminal end in the winding direction thereof. The second region is a region in which an average value of heights of convex parts of the concavo-convex structure part of the resin film is greater than that of the first region by 1 μm or more. When it is assumed that a radius of the winding core is R1, a winding radius of the first region wound on the winding core is R2, and a radius of a film roll is R3, 3 < 100 × (R2 - R1)/R3 < 50 and 100 × (R2 - R1)/R2 < 65 are established.
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Inventors:
SUDA KAZUYA (JP)
Application Number:
PCT/JP2018/019069
Publication Date:
November 29, 2018
Filing Date:
May 17, 2018
Export Citation:
Assignee:
ZEON CORP (JP)
International Classes:
B29C59/04; B65H18/28
Domestic Patent References:
| WO2015137367A1 | 2015-09-17 |
Foreign References:
| JP2016132537A | 2016-07-25 | |||
| JPH0485248A | 1992-03-18 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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