Abstract: A release liner which makes it difficult for an adhesive layer to impair slidability and makes it easy to exhibit an adhesive force suitably, a method of producing a release liner, an adhesive sheet, and a method of producing an adhesive sheet. A release liner has a surface provided with a ridge portion extending linearly, and on the surface, a plurality of recesses having different depths are randomly formed in a surface direction and are continuously connected.

Abstract: A monitoring system is provided, including: a data acquisition means for acquiring first data indicating a distribution of at least one physical quantity in a longitudinal direction of an optical fiber calculated based on backscattered light of the optical fiber installed in an infrastructure facility, and second data indicating the at least one physical quantity detected by a measurement sensor installed in the infrastructure facility; a failure detection means for detecting a failure of the infrastructure facility, based on the first data and the second data; and an output means for outputting a detection result by the failure detection means.

Abstract: [Problem] A release liner and an adhesive sheet with which contact area of an adhesive layer on an adherend is reduced at positioning and adhesive force can excellently develop at the adhesive layer after positioning are provided. [Solution] A release liner 100 has a surface 101 at which concave portions 120 are formed. The concave portion narrows toward a deepest part 121, and a portion 110 between the concave portions has a convex sectional shape in a thickness direction D1 of the release liner. The convex sectional shape narrows at a continuous tilt from the deepest part to an apex 111 of the convex sectional shape, and in the convex sectional shape, a width w at a height of ½h, which is half of a height h, and the height h have a relation of w>h.

Abstract: An object is to provide an inkjet printing sheet that can suppress uneven printing by suppressing variation in the interference among dots in an ink-receiving layer surface. This object was achieved by a sheet for inkjet printing, the sheet having a multilayer structure including in this order an ink-receiving layer, a base material, a pressure sensitive adhesive layer, and a release liner, the release liner including a silicone-based release agent layer on a contact face with the pressure sensitive adhesive layer, the ink-receiving layer including a composition for forming ink-receiving layer containing a resin and a silicone-based leveling agent. A content of the silicone-based leveling agent is 0.005 parts by mass or greater and less than 0.30 parts by mass per 100 parts by mass of the resin.

Abstract: A release liner which makes it difficult for an adhesive layer to impair slidability and makes it easy to exhibit an adhesive force suitably, a method of producing a release liner, an adhesive sheet, and a method of producing an adhesive sheet. A release liner has a surface provided with a ridge portion extending linearly, and on the surface, a plurality of recesses having different depths are randomly formed in a surface direction and are continuously connected.

Abstract: A release liner which makes it difficult for an adhesive layer to impair slidability and makes it easy to exhibit an adhesive force suitably, a method of producing a release liner, an adhesive sheet, and a method of producing an adhesive sheet. A release liner has a surface provided with a ridge portion extending linearly, and on the surface, a plurality of recesses having different depths are randomly formed in a surface direction and are continuously connected.

Abstract: A release liner which makes it difficult for an adhesive layer to impair slidability and makes it easy to exhibit an adhesive force suitably, a method of producing a release liner, an adhesive sheet, and a method of producing an adhesive sheet. A release liner has a surface provided with a ridge portion extending linearly, and on the surface, a plurality of recesses having different depths are randomly formed in a surface direction and are continuously connected.