Heat-activated adhesive sheet
AssigneeNitto Denko Corporation
InventorsKoichi Ikeda, Tsubasa Ueda, Hironori Tamai
Life of this patent
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Abstract
Disclosed is a heat-activated adhesive sheet which includes a heat-activated adhesive layer, and two release liners arranged so as to sandwich and protect the heat-activated adhesive layer. One of the two release liners is a release liner containing a polyolefinic film as a base material, and the other is a release liner containing a polyester film as a base material. This heat-activated adhesive sheet has a transfer heat-activated adhesive layer, can thereby have a small thickness, is unlikely to suffer from “unintended separation”, and is unlikely to cause lifting and delamination of release liners when the sheet is stored as a roll.
Claims3
A heat-activated adhesive sheet comprising
- a heat-activated adhesive layer, which is a transfer adhesive layer including no base material, and
- release liners arranged so as to protect both surfaces of the heat-activated adhesive layer,
- wherein one release liner of the release liners for one surface of the surfaces contains a polyolefinic film as a base material and a release coating constituted by a silicone release agent arranged on or above a surface of the polyolefinic film, and the other release liner of the release liners for the other surface of the surfaces contains a polyester film as a base material and a release coating constituted by a silicone release agent arranged on or above a surface of the polyester film.
Dependencies are inferred from the claim text.