PRESSURE-SENSITIVE ADHESIVE SHEET

Provided is a PSA sheet capable of showing high long-term adhesive strength and good air release properties between the PSA sheet and an adherend. This invention provides a PSA sheet comprising a substrate film and a PSA layer provided to at least one face of the substrate film. The PSA sheet compri...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: YAMAMOTO Shuuhei, MATSUSHITA Kiichiro
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:Provided is a PSA sheet capable of showing high long-term adhesive strength and good air release properties between the PSA sheet and an adherend. This invention provides a PSA sheet comprising a substrate film and a PSA layer provided to at least one face of the substrate film. The PSA sheet comprises a coating layer partially covering the PSA layer surface, whereby the PSA layer surface has a coating layer-bearing area and a coating layer-free area. The coating layer-free area occupies 70% or more of the PSA layer surface. In a top view of the PSA layer surface, the coating layer-bearing area has a linearly extending part running from one edge to another edge of the PSA layer. The linearly extending part has a width in a range of 0.1 mm to 2 mm.