Title:
LAYERED BODY
Document Type and Number:
WIPO Patent Application WO/2020/158176
Kind Code:
A1
Abstract:
Provided is a layered body having a surface protective film or a reinforcing film layered on a carrier sheet, wherein the base material surface of the surface protective film or the reinforcing film does not lift readily from the adhesive layer of the carrier sheet, when being adhered continuously onto a member via a roll-to-roll process. This layered body is a layered body of five or more layers comprising a resin film (1), an adhesive layer (1), a resin film (2), an adhesive layer (2), and a resin film (3), in this order, wherein the adhesive layer (1) and the resin film (2) have been layered directly on one another, and the resin film (2) and the adhesive layer (2) have been layered directly on one another. In a direction substantially orthogonal to the length direction, the layered part between the adhesive layer (1) and the resin film (2) is segmented into a plurality by 0.5 mm to 10 mm-wide through-holes. The length of the plurality of layered parts from the adhesive layers (1) and the resin film (2) segmented by the through-holes is 1 mm to 2,000 mm in the length direction. When the layered body is wound around a six-inch diameter roll in such a manner that the resin film (1) is on the outside, the maximum amount by which the plurality of layered parts from the adhesive layer (1) and the resin film (2) segmented by the through-holes are lifted from the adhesive layer (2) is 0.2 mm or less, when the width of the through-holes is 5 mm and the length of the plurality of layered parts from the adhesive layer (1) and the resin film (2) segmented by the through-holes is 50 mm in the length direction.
Inventors:
OCHI GENKI (JP)
NAKANO TAKESHI (JP)
NAKANO TAKESHI (JP)
Application Number:
PCT/JP2019/047249
Publication Date:
August 06, 2020
Filing Date:
December 03, 2019
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
B32B3/10; B32B27/00; C09J7/38; C09J201/00
Domestic Patent References:
| WO2018092904A1 | 2018-05-24 | |||
| WO2019230495A1 | 2019-12-05 |
Foreign References:
| JP2014180847A | 2014-09-29 | |||
| JP2012126855A | 2012-07-05 | |||
| JP2013014012A | 2013-01-24 | |||
| JP2004149621A | 2004-05-27 |
Attorney, Agent or Firm:
MOMII Takafumi (JP)
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