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.

Claims

1. A pull-up sealing gasket, comprising: a functional layer comprising, from top to bottom, a surface film and a bonding 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; wherein, The functional layer of the pull-up sealing gasket has a first tear area, a hollow 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; the hollow area is cut by the secondary cutting line, its thickness is less than the thickness of the pull-up sealing gasket, and the hollow area is located on the periphery of the pull portion and connected to both sides of the pull neck; the release layer and the strong adhesive layer are located on the lower surface of the connecting film corresponding to the pull portion, or on the upper or lower surface of the electromagnetic induction heating layer; wherein, the electromagnetic induction heating layer is a wireless information integrated chip, and the wireless information integrated chip includes: a base film; The information and heating layer includes an information area and an electromagnetic induction heating ring; and a first adhesive layer located between the base film and the information and heating layer; the information area has an antenna and a chip that are mutually connected, the electromagnetic induction heating ring surrounds the information area in a planar view, and there is a gap between the electromagnetic induction heating ring and the information area.

2. The pull-up sealing gasket as described in claim 1, wherein, The functional layer of the pull-up sealing gasket is also provided with a main cutting line, which divides the pull-up sealing gasket into an outer ring and an inner ring. The inner side of the outer ring is connected to the outer side of the inner ring, and the main cutting line and the part of the inner ring other than the first tear area constitute a second tear area.

3. The pull-out sealing gasket as described in claim 2, wherein, The other end of the first tear line is connected to the main cutting line, and the other end of the second tear line is connected to the main cutting line.

4. The pull-out sealing gasket as described in claim 2, wherein, The other end of the first tear line is connected to the lifting neck, and the other end of the second tear line is connected to the lifting neck.

5. The pull-out sealing gasket as described in claim 1, wherein, The other end of the first tear line is connected to the other end of the second tear line.

6. The pull-up sealing gasket as described in claim 2, wherein, The other end of the first tear line is connected to the other end of the second tear line.

7. A pull-up sealing gasket as described in any one of claims 1 to 6, wherein, The first tear line and / or the second tear line have at least one break point, and the portion of the functional layer corresponding to the break point is not completely cut in the vertical direction, while the portion of the functional layer corresponding to the first tear line and / or the second tear line other than the break point is completely cut.

8. The pull-out sealing gasket as described in claim 2, wherein, The main cutting line has at least three break points, and the first tear line and / or the second tear line has at least one break point. The portion of the functional layer corresponding to the break points is not completely cut in the vertical direction, and the portion of the functional layer corresponding to the main cutting line, the first tear line and / or the second tear line is completely cut except at the break points.

9. The pull-out sealing gasket as described in claim 2, wherein, The main cutting line has at least three break points, and the first tear line and / or the second tear line has at least one break point. The ends of the upper surface of the functional layer corresponding to the break points are not cut in the vertical direction at a distance of 0.02 mm to 0.9 mm from the horizontal direction of the main cutting line, the first tear line and / or the second tear line. The portions of the functional layer corresponding to the main cutting line, the first tear line and / or the second tear line, except for the break points, are completely cut off.

10. A pull-up sealing gasket as described in any one of claims 1 to 6, wherein, The material of the surface film is selected from at least one of the group consisting of polyimide (PI), polyethylene naphthalate (PEN), polyamide (PA), polyethylene terephthalate (PET), polyethylene (PE), and polypropylene (PP).

11. The pull-up sealing gasket as described in any one of claims 1 to 6, wherein, The material of the connecting membrane is selected from at least one of the group consisting of polyethylene terephthalate (PET), polypropylene (PP), expandable polyethylene (EPE), expandable polyproplene (EPP), polyamide (PA), and polyethylene (PE).

12. The pull-up sealing gasket as described in any one of claims 1 to 6, wherein, The sealing layer is a hot melt adhesive or a combination of a sealing film and an adhesive, wherein the hot melt adhesive is made of at least one material selected from the group consisting of PE, PP, ethylene-methyl acrylate copolymer (EMAC), ethylene-methacrylic acid copolymer (EMAA), ethylene-ethyl acrylate (EEA), ethylene-acrylic acid copolymer (EAA), ethylene-butyl acrylate (EBA), and ethylene-methyl methacrylate copolymer (EMMA); the sealing film is made of at least one material selected from the group consisting of PE, PP, PA, PVDC, EVOH, and PET; and the adhesive is located between the sealing film and the electromagnetic induction heating layer.

13. The pull-out sealing gasket as described in any one of claims 1 to 6, wherein, The strong adhesion layer system enables the peel strength between the bonding film and the electromagnetic induction heating layer to be greater than 12N / 15mm.

14. The pull-out sealing gasket as described in claim 13, wherein, The strong adhesive layer is a dry composite adhesive or a hot melt laminate, and the material of the hot melt laminate is selected from at least one of the group consisting of PE, PP, EMAC, EMAA, EEA, EAA and EMMA.

15. A pull-up sealing gasket as described in any one of claims 1 to 6, wherein, The release layer is applied to the lower surface of the functional layer, and the application area of ​​the release layer is not less than the lifting portion.

16. A pull-up sealing gasket as described in any one of claims 1 to 6, wherein, The release layer is applied to the upper surface of the electromagnetic induction heating layer, and the application area of ​​the release layer is not less than the hollow area and the lifting part.

17. A pull-up sealing gasket as described in any one of claims 1 to 6, wherein, The surface film and the connecting film also include a composite film and / or a composite foamed film, wherein the composite film is at least one of the group consisting of PI, PEN, PET, PP, PA and PE, and the composite foamed film is EPE or EPP.

18. The pull-out sealing gasket as described in claim 1, wherein, The wireless information integrated chip also has a protective layer and a second adhesive layer. The protective layer is located on the side of the information and heating layer away from the base film, and the second adhesive layer is located between the information and heating layer and the protective layer.

19. The pull-out sealing gasket as described in claim 1, wherein, The inner edge of the electromagnetic induction heating ring also includes an inner cutting line, and the inner cutting line has a plurality of breaks. The ends of the upper surface of the functional layer corresponding to the breaks are not cut in the vertical direction at a distance of 0.02 mm to 0.9 mm along the horizontal direction of the inner cutting line. The portion of the wireless information integrated chip corresponding to the inner cutting line except for the breaks is completely cut off. Furthermore, the inner cutting line is located between the information area and the electromagnetic induction heating ring and surrounds the information area.

20. The pull-out sealing gasket as described in claim 1, wherein, The electromagnetic induction heating ring is completely separated from the information area.

21. The pull-out sealing gasket as described in claim 1, wherein, The interval is the distance between the outermost edge of the information area and the innermost edge of the electromagnetic induction heating ring, which is 0.1mm to 3mm.

22. The pull-out sealing gasket as described in claim 1, wherein, The information and heating layer also includes at least one physical connection bridge, which is used to connect the information area and the electromagnetic induction heating ring.

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