Pull-up sealing gasket

Abstract

This invention provides a pull-out sealing gasket, comprising: a functional layer comprising, from top to bottom, a surface film and a connecting film; an adhesive layer located below the functional layer; a release layer and a strong adhesive layer located between the surface film and the adhesive layer; and an electromagnetic induction heating layer located between the surface film and the adhesive layer. The functional layer of the pull-out sealing gasket has a first tear area, a cutout area, a first tear line, a second tear line, and a secondary cutting line. The first tear area includes: a pull portion; a pull neck connected to the bottom end of the pull portion and having a first contact point and a second contact point; the first tear line, one end of which is connected to the first contact point; and the second tear line, one end of which is connected to the second contact point. Furthermore, the hollowed-out area is cut by the cutting line, and its thickness is less than that of the pull-out sealing gasket. The hollowed-out area is located on the periphery of the pull-out portion and connects to both sides of the pull-out neck. The release layer and the strong adhesive layer are located on the lower surface of the connecting film corresponding to the pull-out portion, or on the upper or lower surface of the electromagnetic induction heating layer. The aforementioned pull-out sealing gasket improves the ease of tearing for the user and allows for two-stage tearing.

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