Pull-tab sealing liner

Abstract

A pull-tab sealing liner (50, 100, 100', 100'', 100'''), comprising: a functional layer (1), which sequentially comprises, from top to bottom, a surface film (11) and a bonding film (12); an adhesive sealing layer (4) located below the functional layer (1); a release layer (2) and a strong adhesive layer (6), wherein the release layer (2) and the strong adhesive layer (6) are located between the surface film (11) and the adhesive sealing layer (4); and an electromagnetic induction heating layer (3) located between the surface film (11) and the adhesive sealing layer (4). The functional layer (1) of the pull-tab sealing liner (50, 100, 100', 100'', 100''') is provided with a first tear area (1122), a hollowed-out area (1121), a first tear line (1122c), a second tear line (1122d), and a secondary cutting line (9b). The first tear area (1122) comprises: a pull tab (1122a); and a pull-tab neck (1122b) connected to the bottom end of the pull tab (1122a) and having a first connection point (1122b1) and a second connection point (1122b2). One end of the first tear line (1122c) is connected to the first connection point (1122b1). One end of the second tear line (1122d) is connected to the second connection point (1122b2). The hollowed-out area (1121) is formed by cutting along the secondary cutting line (9b), the thickness of the hollowed-out area is less than the thickness of the pull-tab sealing liner (50, 100, 100', 100'', 100'''), and the hollowed-out area (1121) is located around the pull tab (1122a) and is connected to two sides of the pull-tab neck (1122b). The release layer (2) and the strong adhesive layer (6) are located on the lower surface of the bonding film (12) corresponding to the pull tab (1122a), or the upper surface or the lower surface of the electromagnetic induction heating layer (3). The pull-tab sealing liner (50, 100, 100', 100'', 100''') can improve the convenience of tearing by users, and reduce waste of contents.

Description

Pull-up sealing gasket

[0001] Cross-reference of related applications

[0002] This application claims priority to Chinese Patent Application No. 202510100347.1, filed on January 22, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to a pull-up sealing gasket, and more particularly to a two-section tear-off pull-up sealing gasket. Background Technology

[0004] To prevent leakage and spoilage due to external environmental factors, sealing gaskets are used to seal the openings of packaging containers such as beverage cans and medicine bottles. Generally, sealing gaskets are made of materials such as aluminum foil or cardboard.

[0005] By using a sealing gasket that fits tightly against the container opening, the contents can be prevented from leaking out and can be sealed and preserved. Summary of the Invention

[0006] However, since the known sealing gaskets are designed primarily for sealing and not for ease of tearing, the aluminum foil or cardboard at the container opening is not easy to open with a finger, and cutting it with a knife or poking it with an awl is both troublesome and dangerous, causing inconvenience to the user.

[0007] Furthermore, because the known sealing gaskets are designed primarily for one-time tearing, tearing off the gasket opens the container mouth wide at once, easily spilling out a large amount of contents and causing waste. After painstakingly removing the aluminum-plastic sealing film from the container mouth, the cardboard remaining inside the container lid has very poor oxygen and moisture barrier properties, making the contents easily susceptible to spoilage from oxygen and moisture.

[0008] Therefore, how to solve the aforementioned problems encountered by known sealing gaskets and effectively improve the ease of tearing has become an urgent problem that this technical field hopes to solve.

[0009] To address the aforementioned issues, this disclosure provides a pull-out 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. The functional layer of the pull-out sealing gasket includes 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. The hollow area is cut by the cutting line and its thickness is less than that of the pull-up sealing gasket. The hollow area is located on the periphery of the pull-up part and is connected to both sides of the pull-up neck. The release layer and the strong adhesive layer are located on the lower surface of the connecting film corresponding to the pull-up part, or on the upper or lower surface of the electromagnetic induction heating layer.

[0010] In an embodiment, the functional layer of the pull-up sealing gasket is further 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.

[0011] In one embodiment, 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.

[0012] In one embodiment, 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.

[0013] In one embodiment, the other end of the first tear line is connected to the other end of the second tear line.

[0014] In one embodiment, the first tear line and / or the second tear line has 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; the portion of the functional layer corresponding to the first tear line and / or the second tear line, excluding the break point, is completely cut. In another embodiment, 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, and the portion of the functional layer corresponding to the break point is not completely cut in the vertical direction; the portion of the functional layer corresponding to the main cutting line, the first tear line, and / or the second tear line, excluding the break point, is completely cut. In yet another embodiment, the main cutting line has at least three breaks, and the first tear line and / or the second tear line has at least one break. 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 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 breaks, are completely cut off.

[0015] In the embodiments, 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).

[0016] In an embodiment, 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).

[0017] In this embodiment, the sealing layer is a hot melt adhesive or a combination of a sealing film and an adhesive, wherein the hot melt adhesive is selected from at least one of 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 selected from at least one of 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.

[0018] In an embodiment, the strong adhesion layer enables the peel strength between the bonding film and the electromagnetic induction heating layer, as measured by ASTM D903 standard, to be greater than 12 N / 15 mm.

[0019] In the embodiments, 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.

[0020] In one embodiment, 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. In another embodiment, 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 cutout area and the lifting portion. Furthermore, in yet another embodiment, the release layer is applied to the lower surface of the electromagnetic induction heating layer, and the application area of ​​the release layer is not less than the lifting portion.

[0021] In an embodiment, a composite film and / or a composite foamed film are further included between the surface film and the connecting film, and 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.

[0022] In this embodiment, the electromagnetic induction heating layer is an aluminum foil or a wireless information integration sheet.

[0023] In an embodiment, the wireless information integrated sheet includes: a base film; an information and heating layer, which 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; wherein the information area has an antenna and a chip that are mutually connected, and the electromagnetic induction heating ring surrounds the information area in a planar view.

[0024] In an embodiment, the wireless information integration sheet further includes 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.

[0025] In an embodiment, an inner cutting line for the electromagnetic induction heating ring is further included on the inner side of the inner edge of the electromagnetic induction heating ring. The inner cutting line for the electromagnetic induction heating ring has multiple 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 for the electromagnetic induction heating ring. The portion of the wireless information integrated piece corresponding to the inner cutting line for the electromagnetic induction heating ring, except for the breaks, is completely cut off. At least one break of the inner cutting line for the electromagnetic induction heating ring corresponds to at least one break of the first tear line and / or the second tear line, or multiple breaks of the inner cutting line for the electromagnetic induction heating ring correspond to multiple breaks of the main cutting line of the functional layer. The inner cutting line for the electromagnetic induction heating ring is located between the information area and the electromagnetic induction heating ring and surrounds the information area.

[0026] In one embodiment, there is a gap between the electromagnetic induction heating ring and the information area. In another embodiment, this gap is the distance between the outermost edge of the information area and the innermost edge of the electromagnetic induction heating ring, and is 0.1 mm to 3 mm. In a preferred embodiment, the gap between the electromagnetic induction heating ring and the information area is completely filled.

[0027] In an embodiment, the information and heating layer also includes at least one physical connection bridge for connecting the information area and the electromagnetic induction heating ring.

[0028] The present invention discloses a pull-up sealing gasket that allows users to peel off the gasket without external assistance by simply grasping the pull part and pulling it upwards along the pull part, neck, and tear line. This allows the layers of the sealing gasket to be pulled upwards, facilitating easy opening. Furthermore, the resealable outer ring structure is not damaged during the entire opening process, and the process is very convenient and quick. After the container lid is closed, it firmly presses the resealable outer ring remaining on the container opening, ensuring a good seal upon resealing.

[0029] Next, the inventors can open a portion of the sealing area (first tear area) using the pull-out sealing gasket contained in this disclosure, thereby allowing a small amount of contents to be poured out as needed, reducing waste of contents.

[0030] This disclosure is made in view of the aforementioned known problems, and its purpose is to provide a pull-out sealing gasket that improves the ease of tearing for the user and allows for two-stage tearing.

[0031] Overview of the attached figures

[0032] Figure 1 is a cross-sectional schematic diagram of a pull-up sealing gasket according to an embodiment of the present disclosure.

[0033] Figure 2A is a top view of a pull-up sealing gasket according to an embodiment of the present disclosure.

[0034] Figure 2B is a top view of a pull-up sealing gasket according to an embodiment of the present disclosure.

[0035] Figure 3 is a top view of a pull-up sealing gasket according to another embodiment of the present disclosure.

[0036] Figure 4 is a top view of a pull-up sealing gasket according to another embodiment of the present disclosure.

[0037] Figure 5A is a cross-sectional schematic diagram of a pull-up sealing gasket according to another embodiment of the present disclosure.

[0038] Figure 5B is a cross-sectional schematic diagram of a pull-up sealing gasket according to yet another embodiment of the present disclosure.

[0039] Figure 5C is a cross-sectional schematic diagram of a pull-up sealing gasket according to another embodiment of the present disclosure.

[0040] Figure 6 is a cross-sectional schematic diagram of the functional layer of a modified example of this disclosure.

[0041] Figure 7 is a cross-sectional schematic diagram of a wireless information integration chip according to an embodiment of the present disclosure.

[0042] Figure 8A is a plan view of information and heating layer according to an embodiment of the present disclosure.

[0043] Figure 8B is a plan view of information and heating layer according to another embodiment of this disclosure.

[0044] Figure 9A is a plan view of a specific example of an information area according to an embodiment of the present disclosure.

[0045] Figure 9B is a plan view of a specific example of the information area according to another embodiment of this disclosure.

[0046] Figure 10 is a cross-sectional schematic diagram of a wireless information integration chip according to another embodiment of the present disclosure.

[0047] Figures 11A to 11C are top views illustrating other specific examples of the pull-up sealing gaskets of this disclosure.

[0048] Preferred embodiments of this disclosure

[0049] The following specific embodiments illustrate the implementation of this disclosure. Those skilled in the art can understand other advantages and effects of this disclosure from the content disclosed in this specification. This disclosure can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the spirit of this disclosure.

[0050] Unless otherwise stated herein, the term “A to B” as used in the specification and the appended claims includes the meaning of “more than A and less than B”. For example, the term “10 to 40% by weight” includes the meaning of “more than 10% by weight and less than 40% by weight”.

[0051] First Implementation Form

[0052] Pull-up sealing gasket

[0053] First, please refer to Figure 1, which is a cross-sectional schematic diagram of a pull-up sealing gasket 100 according to an embodiment of the present disclosure. As shown in Figure 1, the pull-up sealing gasket 100 according to an embodiment of the present disclosure includes, from top to bottom, the following: a functional layer 1, which includes, from top to bottom, a surface film 11 and a bonding film 12; a release layer 2 and a strong adhesive layer 6; an electromagnetic induction heating layer 3; and an adhesive sealing layer 4. The following describes each layer in detail.

[0054] Surface film

[0055] The surface film is the outer layer used to make pull-out sealing gaskets. Either its upper or lower surface can be a printing surface to print different patterns. In one specific example, the material of the surface film 11 can be selected from at least one of the group consisting of PI, PEN, PA, PET, PE, and PP. The thickness of the surface film 11 is preferably 12μm to 150μm; within this range, the tensile strength is high, and the surface is smooth and glossy.

[0056] Connecting membrane

[0057] The bonding film 12 is mainly used for lamination with the electromagnetic induction heating layer described later. In one specific example, the material of the bonding film 12 may be selected from at least one of the group consisting of PET, EPE, EPP, PA, PP and PE, and its thickness is 12μm to 200μm; thereby, the peel strength after lamination with the electromagnetic induction heating layer can be improved; or, by means of foaming material and thickening, the cushioning capacity of the pull-out sealing gasket can be increased to avoid damage to the structure of the pull-out sealing gasket due to accidental impact.

[0058] Release layer

[0059] Release layer 2 is located between functional layer 1 and adhesive layer 4. Release layer 2 can be made of silicone oil, varnish, or wax, and its surface can be glossy, matte, or dotted, making it easy to peel off. Release layer 2 is located on the lower surface of the lifting part (described later) to facilitate the user's fingers pinching the lifting part and easily tearing open the sealing gasket. The thickness of release layer 2 can be 0.5μm to 40μm, thereby preventing the lifting part from sticking to the underlying electromagnetic induction heating layer 3 and allowing the lifting part to be easily pinched and lifted.

[0060] In one embodiment, as shown in FIG1, the release layer 2 is coated on the lower surface of the functional layer 1, and the coating area of ​​the release layer 2 is not smaller than the lifting portion described later. In this way, after the hollow area of ​​the functional layer 1 is cut off, and after the functional layer 1 is laminated with the layer below, it can be ensured that the lifting portion is not easily stuck to the electromagnetic induction heating layer 3 below, and the lifting portion can be easily pinched up. In another embodiment (see FIG5A), as shown in FIG5A, the release layer 2 is coated on the upper surface of the electromagnetic induction heating layer described later, and the coating area of ​​the release layer 2 is not smaller than the hollow area and the lifting part described later. The coating area of ​​the release layer is not larger than, for example, the second coating range 22 shown in FIG2A, 2B to FIG4. In this way, after the functional layer 1 is laminated with the underlying layer, after the hollow area is cut off downward from the surface film 11 direction of the functional layer 1, the hollow area can be easily removed, and the lifting part can be prevented from being stuck to the underlying electromagnetic induction heating layer 3, and the lifting part can be easily lifted.

[0061] For example, if the release layer is applied to the lower surface of the functional layer, taking Figures 2A, 2B to 4 as examples, the application area of ​​the release layer is not less than the first application range 21 (equivalent to the area enclosed by the dashed lines in the figure, i.e., not less than the lifting portion described later); if the release layer is applied to the upper surface of the electromagnetic induction heating layer, taking Figures 2A, 2B to 4 as examples, the application area of ​​the release layer is not less than the hollow area and the lifting portion, and the application area of ​​the release layer is not greater than the second application range 22 (equivalent to the area enclosed by the dashed lines in the figure); if the release layer is applied to the lower surface of the electromagnetic induction heating layer (see Figure 5C), the application area of ​​the release layer is not less than the lifting portion, and the application area of ​​the release layer is less than the first application range 21 (equivalent to the area enclosed by the dashed lines in Figures 2A, 2B to 4).

[0062] Strong adhesive layer

[0063] A strong adhesive layer 6 is located between the functional layer 1 and the sealing layer 4. More specifically, the strong adhesive layer 6 is located between the connecting film 12 and the electromagnetic induction heating layer 3, and it serves to bond the connecting film 12 and the electromagnetic induction heating layer 3. Because there is a release layer 2 between the connecting film 12 and the electromagnetic induction heating layer 3, and the release layer 2 is made of an easily peelable material, the strong adhesive layer 6 can be used to tightly bond the connecting film 12, the release layer 2, and the electromagnetic induction heating layer 3 together. In addition, the strong adhesive layer 6 can use a dry-applied adhesive with strong adhesion or a hot-melt adhesive with high peel strength, thereby enabling the peel strength between the connecting film and the electromagnetic induction heating layer, as measured by ASTM D903 standard, to be greater than 12N / 15mm. This ensures that the functional layer starting from the neck of the pull-out layer can tear the electromagnetic induction heating layer and the sealing layer apart with extremely strong peel strength. In one specific example, the material of the hot melt adhesive can be selected from at least one of the group consisting of PE, PP, EMAC, EMAA, EEA, EAA, and EMMA, and the thickness of the hot melt adhesive can be 4μm to 60μm. This allows the user to more easily pull up and peel off each layer in the inner ring of the pull-up sealing gasket 100 when holding the lifting part or similar component.

[0064] In one embodiment, the release layer 2 and the strong adhesive layer 6 are located on the lower surface of the lifting portion or the upper surface of the electromagnetic induction heating layer 3 as described below. Taking FIG1 as an example, the release layer 2 and the strong adhesive layer 6 are coated on the lower surface of the connecting film 12; in addition, taking FIG5A as an example, the release layer 2 and the strong adhesive layer 6 are coated on the upper surface of the electromagnetic induction heating layer 3.

[0065] Electromagnetic induction heating layer

[0066] The electromagnetic induction heating layer 3 is located between the functional layer 1 and the sealing layer 4. The electromagnetic induction heating layer 3 can be aluminum foil or a wireless information integration sheet described later. Aluminum foil is an existing structure in known sealing gaskets, and its thickness is preferably 10μm to 40μm, which can prevent leakage of contents and seal and preserve the contents.

[0067] The wireless information integration chip described later can be used to replace aluminum foil, which can effectively reduce the amount of aluminum foil used and reduce energy consumption. Specifically, the wireless information integration chip disclosed herein can increase the function of wireless information transmission, reduce material waste, reduce energy consumption, avoid waste of manpower, avoid interference from metals and liquids, improve production efficiency, provide good communication performance and significantly increase communication distance, and greatly enhance the automation, digitalization and intelligent development of factories, warehouses, logistics, shops and unmanned checkout management.

[0068] Adhesive layer

[0069] The sealing layer 4 is located below the functional layer 1. The sealing layer 4 is mainly used to seal the container opening, and it can be a hot melt adhesive or a combination of a sealing film and an adhesive. Specifically, as shown in Figure 1, the sealing layer 4 is a single layer of hot melt adhesive, and its main material can be selected from at least one of the group consisting of PE, PP, EMAC, EMAA, EEA, EAA, EBA, and EMMA. The thickness of the hot melt adhesive is 4μm to 150μm. Through this hot melt adhesive, a continuous seal can be achieved without the use of an adhesive.

[0070] Next, in another embodiment (referring to FIG5A), as shown in FIG5A, the sealing layer 4 can be a combination of a sealing film 41 and an adhesive 42, with the adhesive 42 located between the sealing film 41 and the electromagnetic induction heating layer 3, thereby allowing the selection of a suitable sealing film 41 to seal different containers. The sealing film 41 is selected from at least one of the group consisting of PE, PP, PA, PVDC, EVOH, and PET, and its thickness can be 12μm to 100μm; the adhesive 42 can be a known adhesive, such as a dry composite adhesive, and is not particularly limited.

[0071] In another embodiment, the pull-up sealing gasket comprises, from top to bottom, a functional layer, which comprises, from top to bottom, a surface film and a bonding film; an electromagnetic induction heating layer; a release layer and a strong adhesive layer; and an adhesive sealing layer.

[0072] Furthermore, although not illustrated, the layers of the pull-up sealing gasket in this embodiment can be bonded together in various ways (e.g., adhesive, bonding, or connection).

[0073] Please refer to Figures 2A, 2B to 4 to describe the tearing method of the pull-up sealing gasket according to various embodiments of the present disclosure. Figures 2A, 2B to 4 are top views of the pull-up sealing gaskets according to three different embodiments of the present disclosure.

[0074] First, Figure 2A is a top view of a pull-up sealing gasket (excluding the main cutting line) according to an embodiment of the present disclosure, and Figure 2B is a top view of a pull-up sealing gasket (including the main cutting line) according to an embodiment of the present disclosure. As shown in Figure 2A, a first tear area 1122, a hollow area 1121, a first tear line 1122c, a second tear line 1122d, and a secondary cutting line 9b are provided on the upper surface of the surface film 11 of the functional layer (i.e., the upper surface of the pull-up sealing gasket 100). The first tear line 1122c corresponds to the line segment at point agf, and the second tear line 1122d corresponds to the line segment at point cde.

[0075] Furthermore, in Figure 2A, the first tear-off area 1122 includes: a lifting portion 1122a, which corresponds to the roughly circular area enclosed by points a, b, c, and ca; and a lifting neck 1122b (corresponding to the area connected by the line connecting points a, b, and c), which connects to the bottom end of the lifting portion 1122a and has a first contact point 1122b1 (i.e., point a) and a second contact point 1122b2 (i.e., point c). Here, one end of the first tear line 1122c (corresponding to the line connecting points a, b, and f) connects to the first contact point 1122b1, while one end of the second tear line 1122d (corresponding to the line connecting points c, e, and d) connects to the second contact point 1122b2. Additionally, in Figure 2A, the other end of the first tear line 1122c (i.e., point f) connects to the other end of the second tear line 1122d (i.e., point e), thereby completing the closure of the first tear-off area 1122. In this way, when the user holds the lifting part and pulls it upward along the lifting part 1122a, the lifting neck 1122b, the first tear line 1122c and the second tear line 1122d, the first tear area 1122 can be completely torn open, thereby achieving the effect of partially opening the sealing gasket.

[0076] On the other hand, as shown in Figure 2A, the cutout area 1121 is cut by the secondary cutting line 9b and is located on the periphery of the lifting part 1122a. The cutout area 1121 is the part where the functional layer is removed, so that the thickness of the cutout area 1121 is less than that of the lifting sealing gasket, thereby allowing the user's fingernail and fingertip to poke open the bottom of the lifting part. In addition, the cutout area 1121 is connected to both sides of the lifting neck 1122b. Taking Figure 2A as an example, one end of the cutout area 1121 is connected to the first contact point 1122b1 (i.e., point a) of the lifting neck 1122b, while the other end of the cutout area 1121 is connected to the first contact point 1122b2 (i.e., point c) of the lifting neck 1122b.

[0077] Next, as an embodiment of the pull-out sealing gasket (including the main cutting line), in order to achieve the effect of two-stage tearing, as shown in FIG2B, a main cutting line 9a is also provided on the upper surface of the surface film 11 of the functional layer (i.e., the upper surface of the pull-out sealing gasket 100). The main cutting line 9a divides the surface film 11 into an outer ring 111 and an inner ring 112, and the inner side of the outer ring 111 is connected to the outer side of the inner ring 112. During the process of tearing the pull-out sealing gasket 100 with fingers, the outer ring 111 will not be damaged and can be pressed back onto the container opening.

[0078] As shown in Figure 2B, the inner ring 112 is composed of a cutout area 1121, a first tearing area 1122, and other areas. Specifically, the cutout area 1121 refers to the area enclosed by points abcia, and it is not torn along with the first tearing area 1122, but is torn as part of the second tearing area 1123 during the second tearing; the first tearing area 1122 refers to the area enclosed by points abcdefga. In addition, the second tearing area 1123 corresponds to the area of ​​the main cutting line 9a and the inner ring 112 other than the first tearing area 1122, that is, the second tearing area 1123 includes the cutout area 1121 and other areas.

[0079] As shown in Figure 2B, the other end of the first tear line 1122c (i.e., point f) is connected to the main cutting line 9a, and the other end of the second tear line 1122d (i.e., point e) is also connected to the main cutting line 9a.

[0080] In this way, when the user holds the lifting part and pulls it upward along the lifting part 1122a, the lifting neck 1122b, the first tear line 1122c and the second tear line 1122d, the first tear area 1122 is completely torn open, thereby making the sealing gasket present a fan-shaped opening.

[0081] Next, by pinching a portion of the second tear zone 1123 with their fingers (e.g., pinching point g), the user can further tear the second tear zone 1123, making the sealing gasket open to its maximum extent, leaving only the outer ring 111. In this way, the sealing gasket can be torn open in two stages.

[0082] In this embodiment, the main cutting line 9a has at least three break points, and the first tear line 1122c and the second tear line 1122d together have at least three break points. This ensures that even if the functional layer 1 is cut or the cut-out area is removed, the sections of the functional layer 1 remain connected at the break points and do not scatter. In another embodiment, the ends of the upper surface of the functional layer 1 corresponding to these break points are not cut in the vertical direction at a distance of 0.02mm to 0.9mm from the horizontal direction along the main cutting line 9a, the first tear line 1122c, and / or the second tear line 1122d. The portions of the functional layer 1 corresponding to the main cutting line 9a, the first tear line 1122c, and / or the second tear line 1122d, excluding the break points, are completely cut off. Therefore, when the user pinches the pull part with their hand and tears along the tear line to the break point, a short pause will be created in the tearing action to continue to accumulate and increase the tearing force, which is more conducive to subsequent tearing. In addition, during the processing, the presence of the break point also pulls the pull part and the pull neck to prevent them from drooping or floating up, so as to avoid poor quality during the processing.

[0083] Furthermore, in this embodiment, the secondary cutting line 9b (equivalent to the line segment formed by point abcia) has no breakpoint, thereby enabling the residual material of the cutout area to easily detach from the functional layer 1 after the outline of the cutout area is cut out.

[0084] Similarly, as an implementation example capable of achieving a two-stage tearing effect, in Figure 3, the inner ring 112 is composed of a cutout area 1121, a first tearing area 1122, and other areas. Specifically, the cutout area 1121 refers to the area enclosed by points abcdea, and it is not torn along with the first tearing area 1122, but is torn as part of the second tearing area 1123 during the second tearing; the first tearing area 1122 refers to the area enclosed by the line segment formed by points abcdea and the line segment formed by points afghijkf. In addition, the second tearing area 1123 corresponds to the area in the inner ring 112 other than the first tearing area 1122, that is, the second tearing area 1123 includes the cutout area 1121 and other areas.

[0085] Next, in Figure 3, the lifting part 1122a corresponds to the roughly circular area enclosed by points abcda; the lifting neck 1122b corresponds to the area enclosed by points adefa, and has a first contact point 1122b1 (i.e., point d) and a second contact point 1122b2 (i.e., point a); a first tear line 1122c (corresponding to the line connected by points dea), one end of which is connected to the first contact point 1122b1; and a second tear line 1122d (corresponding to the line connected by points afghijkf), one end of which is connected to the second contact point 1122b2.

[0086] As shown in Figure 3, the other end of the first tear line 1122c is connected to point d of the first contact point 1122b1, and the other end of the second tear line 1122d is connected to point a of the second contact point 1122b2. Thus, when the user holds the lifting part and pulls it upwards along the lifting part 1122a, the lifting neck 1122b, the first tear line 1122c, and the second tear line 1122d, the entire first tear area 1122 is torn open.

[0087] In this embodiment, the secondary cutting line 9b corresponds to the line connecting points aedcbafghijkf. The secondary cutting line 9b starts from point a, passes through aedcbafghijkf, and is formed by continuous cutting using a single cutting blade. The cutout area 1121 is formed by cutting a portion of the secondary cutting line 9b (corresponding to the line segment connecting cdeabc), and is located on the periphery of the lifting portion 1122a, with a thickness less than that of the lifting sealing gasket. The main cutting line 9a has at least three breakpoints, corresponding to the line segment connecting ijlhi. The hollow area 1121 is connected to both sides of the lifting neck 1122b. Taking Figure 3 as an example, one end of the hollow area 1121 is connected to the first contact point 1122b1 (i.e., point d) of the lifting neck 1122b, while the other end of the hollow area 1121 is connected to the second contact point 1122b2 (i.e., point a) of the lifting neck 1122b.

[0088] Next, in this embodiment, the second tear line 1122d has at least three break points, thereby ensuring that even if the functional layer 1 is cut or the cutout area is removed, the various sections of the functional layer 1 can still be connected at the break points and will not fall apart. In addition, in this embodiment, the periphery of the lifting part 1122a (equivalent to the line segment formed by points a, b, c, da) does not have break points, thereby allowing the residual material of the cutout area to easily detach from the functional layer 1 after the outline of the cutout area is cut out.

[0089] Similarly, as an implementation example capable of achieving a two-stage tearing effect, in Figure 4, the inner ring 112 is composed of a cutout area 1121, a first tearing area 1122, and other areas. Specifically, the cutout area 1121 refers to the area enclosed by points a, b, c, g, and d, and it is not torn along with the first tearing area 1122, but is torn as part of the second tearing area 1123 during the second tear; the first tearing area 1122 refers to the area enclosed by points a, b, c, d, e, f. In addition, the second tearing area 1123 corresponds to the area of ​​the main cutting line 9a and the inner ring 112 excluding the first tearing area 1122, that is, the second tearing area 1123 includes the cutout area 1121 and other areas.

[0090] Next, in Figure 4, the lifting part 1122a corresponds to the roughly circular area enclosed by points abca; the lifting neck 1122b corresponds to the area connected by points ac, and has a first contact point 1122b1 (i.e., point a) and a second contact point 1122b2 (i.e., point c); a first tear line 1122c (corresponding to the line connected by points afe), one end of which is connected to the first contact point 1122b1; and a second tear line 1122d (corresponding to the line connected by points cde), one end of which is connected to the second contact point 1122b2.

[0091] As shown in Figure 4, the other end of the first tear line 1122c is connected to the other end of the second tear line 1122d. Thus, when the user holds the lifting part and pulls it upwards along the lifting part 1122a, the lifting neck 1122b, the first tear line 1122c, and the second tear line 1122d, the entire first tear area 1122 is torn open.

[0092] Furthermore, the cutout area 1121 is cut from the secondary cutting line 9b (equivalent to the line segment formed by connecting a, b, c, g, and ga), and is located on the periphery of the lifting part 1122a, with a thickness less than that of the lifting sealing gasket. The main cutting line 9a is equivalent to the line segment formed by connecting j, hi, and j. The cutout area 1121 is connected to both sides of the lifting neck 1122b. Taking Figure 4 as an example, one end of the cutout area 1121 is connected to the first contact point 1122b1 (i.e., point a) of the lifting neck 1122b, while the other end of the cutout area 1121 is connected to the first contact point 1122b2 (i.e., point c) of the lifting neck 1122b.

[0093] Next, in this embodiment, the main cutting line 9a has at least three breakpoints, thereby ensuring that even if the functional layer 1 is cut or the hollow area is removed, the various sections of the functional layer 1 remain connected at the breakpoints and do not scatter. The first tear line 1122c and the second tear line 1122d together have at least one breakpoint, thereby ensuring that even if the functional layer 1 is cut or the hollow area is removed, the various sections of the functional layer 1 remain connected at the breakpoints and do not scatter. Furthermore, in this embodiment, the secondary cutting line 9b has no breakpoints, and after the outline of the hollow area is cut out, the remaining material of the hollow area can easily detach from the functional layer 1.

[0094] Second Implementation Form

[0095] Next, the second embodiment of the pull-up sealing gasket 100' will be further described. Please refer to FIG5A, which is a cross-sectional schematic diagram of the pull-up sealing gasket 100' according to another embodiment of the present disclosure. As shown in FIG5A, the pull-up sealing gasket 100' includes, in addition to the surface film 11, connecting film 12, release layer 2, strong adhesive layer 6, electromagnetic induction heating layer 3, and sealing layer 4 (a combination of sealing film 41 and adhesive 42) of the first embodiment, also includes an adhesive 5. In FIG5A, the release layer 2 and strong adhesive layer 6 are applied on top of the electromagnetic induction heating layer 3.

[0096] Here, adhesive 5 is located between surface film 11 and connecting film 12, serving as a layer for bonding surface film 11 and connecting film 12. The specific form of adhesive 5 can be the same as adhesive 42, and will not be described again here. Through adhesive 5, the peel strength between surface film 11 and connecting film 12 can be greater than 5 N / 15 mm.

[0097] Additionally, Figure 5B is a cross-sectional schematic diagram of a pull-up sealing gasket 100” according to another embodiment of the present disclosure. As shown in Figure 5B, the pull-up sealing gasket 100” includes, in addition to the surface film 11, connecting film 12, release layer 2, strong adhesive layer 6, electromagnetic induction heating layer 3, and sealing layer 4 of the first embodiment, an adhesive 5. In Figure 5B, except that the release layer 2 and strong adhesive layer 6 are coated below the connecting film 12, the examples and functions of the other layers are the same as in Figure 5A.

[0098] Next, FIG5C is a cross-sectional schematic diagram of a pull-up sealing gasket 100”' according to another embodiment of the present disclosure. As shown in FIG5C, the pull-up sealing gasket 100”' includes, in addition to the surface film 11, connecting film 12, release layer 2, strong adhesive layer 6, electromagnetic induction heating layer 3, and sealing layer 4 of the first embodiment, an adhesive 5 is also included. The adhesive 5 can be used to bond the surface film 11 and the connecting film 12, as well as the connecting film 12 and the electromagnetic induction heating layer 3. The release layer 2 and the strong adhesive layer 6 are located between the electromagnetic induction heating layer 3 and the sealing layer 4, and the release layer 2 and the strong adhesive layer 6 are applied below the electromagnetic induction heating layer 3. The examples and functions of the other layers are the same as those in FIG5A.

[0099] Variations

[0100] Next, a modified example of this disclosure will be described, which mainly improves the functional layer. Specifically, please refer to Figure 6, which is a cross-sectional schematic diagram of the functional layer 1' of a modified example of this disclosure.

[0101] First, as shown in Figure 6, the functional layer 1' includes, from top to bottom: a surface film 11, a foamed film 13, a foamed plate film 14, a composite film 15, and a connecting film 12. The surface film 11 and the connecting film 12 are the same as those in the previous embodiment, and will not be described again here.

[0102] Here, although foamed film 13 and foamed sheet film 14 are shown in Figure 6, foamed film 13 and foamed sheet film 14 are optional structures in this modified example. Both can exist simultaneously, or only one of them can exist. The order of foamed film 13 and foamed sheet film 14 shown in Figure 6 is only an example; the order could also be foamed sheet film 14 on top of foamed film 13. Next, foamed film 13 is EPE or EPP with a thickness of 60μm to 3000μm. The thinner foamed film 13 helps to fill the gap between the bottle and the cap. Furthermore, foamed sheet film 14 is EPE or EPP with a thickness of 0.3mm to 5mm. It provides a thickening effect to increase the cushioning capacity of the pull-up sealing gasket, preventing damage to the structure of the pull-up sealing gasket due to accidental impact.

[0103] Additionally, although composite film 15 is shown in Figure 6, it is an optional structure in this variation. Here, composite film 15 is at least one of the group consisting of PI, PEN, PET, PP, PA, and PE with a thickness of 12 μm to 150 μm, thereby increasing the tensile strength of the pull-tab sealing gasket. An additional composite foam film (not shown) may be further included between the surface film 11 and the connecting film 12, which may be EPE or EPP with a thickness of 40 μm to 3000 μm. The thinner composite foam film has the function of filling the gap between the bottle and the cap. Composite film and composite foam film may coexist, or only one of them may be present.

[0104] Furthermore, although not illustrated, the functional layers of this variant can also be combined in various ways (such as adhesive, bonding or connection).

[0105] Wireless Information Integration Chip

[0106] Next, a description will be given of a wireless information integration chip that can be used as the electromagnetic induction heating layer of this disclosure.

[0107] First, please refer to Figure 7, which is a cross-sectional schematic diagram of a wireless information integration sheet 100w according to an embodiment of the present disclosure. As shown in Figure 7, the wireless information integration sheet 100w according to an embodiment of the present disclosure includes: a base film 1w; a first adhesive layer 2w; and an information and heating layer 3w. The first adhesive layer 2w is located between the base film 1w and the information and heating layer 3w to bond the base film 1w and the information and heating layer 3w. Hereinafter, each layer will be described in detail.

[0108] The base film 1w is used as the initial layer for fabricating the wireless information integration sheet. In one specific example, the material of the base film 1w can be selected from at least one of the group consisting of PI, PEN, PET, PC, PP, and PE. The thickness of the base film 1w is preferably 20μm to 150μm, within which the longitudinal and transverse tensile strengths are relatively high. Furthermore, as shown in Figure 7, the lower surface of the base film 1w is bonded to the first adhesive layer 2w, while the upper surface of the base film 1w can serve as a printing surface for printing different patterns.

[0109] The first adhesive layer is used to bond the base film and information to the heating layer. In one specific example, the first adhesive layer 2w only needs to be able to bond the base film 1w and information to the heating layer 3w, and the material of the first adhesive layer can be a composite adhesive. The thickness of the first adhesive layer 2w can be 0.5μm to 7μm, which can make the peel strength between the two bonded materials greater than 4N / 15mm.

[0110] The information and heating layer 3w includes an information area 31w and an electromagnetic induction heating ring 32w. The information area 31w has wireless information read / write transmission capabilities for subsequent product traceability. The information area 31w includes an interconnected antenna 312w and a chip 311w. The electromagnetic induction heating ring 32w heats up through the electromagnetic field generated by the electromagnetic induction sealing machine, melting the sealing layer of the sealing gasket and adhering it to the container opening, thus acting as an electromagnetic induction sealing gasket to seal the container opening. By incorporating the wireless information integrated chip of this invention, most of the heat is generated in the electromagnetic induction heating ring 32w, with minimal heat conduction only through at least one physical connection bridge 33w between the antenna 312w and the electromagnetic induction heating ring 32w. The length of the physical connection bridge 33w can be 0.1mm to 3mm, the width of the physical connection bridge 33w can be 0.01mm to 5mm, and the material of the physical connection bridge 33w can be the same as that of the antenna 312w. This not only prevents a large amount of heat from being transferred to the central area of ​​the sealing gasket during electromagnetic induction sealing, but also saves energy. When applied to sealing gaskets containing batteries, the thickness of the information and heating layer 3w can be 6μm to 2.5mm; while when applied to sealing gaskets without batteries, the thickness of the information and heating layer 3w can be 6μm to 300μm.

[0111] Next, Figure 8A is a plan view of the information and heating layer according to one embodiment of the present disclosure, and Figure 8B is a plan view of the information and heating layer according to another embodiment of the present disclosure. As shown in Figures 8A or 8B, the electromagnetic induction heating ring 32w surrounds the information area 31w in a planar view. As shown in Figure 8A, the space between the electromagnetic induction heating ring 32w and the information area 31w is filled with an ITV, that is, there are no physical connecting elements (such as physical connecting bridges described later) between the electromagnetic induction heating ring 32w and the information area 31w. Therefore, by filling the space between the electromagnetic induction heating ring 32w and the information area 31w with an ITV, this filled space ITV can block heat conduction to the information area 31w when electromagnetic induction heating occurs, which is a preferred configuration. The space ITV (the distance between the outermost edge of the information area and the innermost edge of the electromagnetic induction heating ring) can be 0.1mm to 3mm. Next, as shown in Figure 8B, a gap ITV is provided at most of the location between the electromagnetic induction heating ring 32w and the information area 31w. This gap ITV can block most of the heat conduction to the information area 31w when electromagnetic induction heating occurs, and the gap ITV (the distance between the outermost edge of the information area and the innermost edge of the electromagnetic induction heating ring) can be 0.1mm to 3mm. In addition, there can be at least one physical connection bridge 33w (two are indicated in Figures 8B and 9B) between the antenna 312w and the electromagnetic induction heating ring 32w. The length of the physical connection bridge 33w can be 0.1mm to 3mm, and the width of the physical connection bridge 33w can be 0.01mm to 5mm. At this time, although the closed-loop electromagnetic induction heating ring 32w and the information area 31w are electrically connected, the wireless communication distance is not reduced significantly. In other words, the space between the electromagnetic induction heating ring 32w and the information area 31w can be filled with the ITV, and can have both the ITV and the physical connection bridge 33w at the same time, or it can be without the space (for example, the space between the electromagnetic induction heating ring 32w and the information area 31w can be filled with the physical connection bridge 33w).

[0112] In one specific example, the electromagnetic induction heating ring 32w can be made of metal, such as aluminum, copper, gold, silver, or tin. From the viewpoint of the effect of generating heat when subjected to a changing electromagnetic field and cost, the electromagnetic induction heating ring 32w is preferably made of aluminum foil with a thickness of 6μm to 40μm.

[0113] On the other hand, regarding chip 311w, it can have a unique identification code and can be selected according to the purpose. For example, it can be a radio frequency identification near field communication (RFID_NFC) chip, a radio frequency identification high frequency (RFID_HF) chip, a radio frequency identification ultra-high frequency (RFID_UHF) chip, or a radio frequency identification microwave (RFID_MW) chip, etc., without any particular limitation. All of these chips can be matched with antenna 312w described later to realize wireless information communication functions.

[0114] Next, regarding the antenna 312w, its main function is to generate wirelessly transmitted signals. Its material can be metal, such as copper, silver, gold, tin or aluminum, without any particular restrictions.

[0115] Next, FIG9A is a plan view of a specific example of the information area of ​​one embodiment, and FIG9B is a plan view of a specific example of the information area of ​​another embodiment. FIG9A corresponds to the embodiment in FIG8A where the electromagnetic induction heating ring 32w and the information area 31w are filled with spaced ITVs, and FIG9B corresponds to the embodiment in FIG8B where most of the space between the electromagnetic induction heating ring 32w and the information area 31w has spaced ITVs. Furthermore, as shown in FIG9A or 9B, the information area 31w includes a chip 311w and an antenna 312w. Where wireless information transmission functionality is possible, the chip 311w and the antenna 312w can be arranged in the manner shown in FIG9A or 9B, or in other ways, based on the RFID frequency band desired by the user, without particular limitation.

[0116] Furthermore, as shown in Figures 9A or 9B, in another embodiment, an inner cutting line 321w for the electromagnetic induction heating ring 32w is also included on the inner side of the inner edge of the electromagnetic induction heating ring 32w. The inner cutting line 321w preferably has multiple breakpoints; specifically, it may have four or more breakpoints. Because the material of the wireless information integrated chip has high tensile strength, this inner cutting line 321w allows the wireless information integrated chip to be used with specific sealing gaskets, such as sealing gaskets with the following characteristics: after a user uses their fingers to pinch the pull part to tear off the middle portion of the sealing gasket, only the sealing ring remains at the container opening. As shown in Figures 9A or 9B, the inner cutting line 321w is located between the information area (including the chip 311w and the antenna 312w) and the electromagnetic induction heating ring 32w, and surrounds the information area. In one specific example, the end of the upper surface of the functional layer corresponding to the break points is 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 321w of the electromagnetic induction heating ring. The portion of the wireless information integrated chip corresponding to the inner cutting line 321w of the electromagnetic induction heating ring, except for the break points, is completely cut off. The multiple break points of the inner cutting line 321w of the electromagnetic induction heating ring correspond to the multiple break points of the main cutting line 9a of the functional layer 1.

[0117] Furthermore, although Figure 7 shows the case where the base film 1w is on top and the information and heating layer 3w is on the bottom, the order of the base film 1w and the information and heating layer 3w can be reversed as needed, i.e., adjusted so that the base film 1w is on the bottom and the information and heating layer 3w is on top.

[0118] Alternatively, the wireless information integration sheet can also be a wireless information integration sheet 100w', which, as shown in Figure 10, includes a protective layer 5w and a second adhesive layer 4w in addition to the aforementioned base film 1w, first adhesive layer 2w, and information and heating layer 3w. The protective layer 5w is located on the side of the information and heating layer 3w away from the base film 1w. The second adhesive layer 4w is located between the information and heating layer 3w and the protective layer 5w, and serves to bond the information and heating layer 3w and the protective layer 5w.

[0119] In one specific example, the second adhesive layer 4w only needs to be able to bond the information to the heating layer 3w and the protective layer 5w. The material of the second adhesive layer can be, for example, a dry composite adhesive, and is not particularly limited. The thickness of the second adhesive layer 4w can be 0.5μm to 7μm, preferably such that the peel strength between the two bonded materials is greater than 4N / 15mm. In addition, as shown in Figure 10, the second adhesive layer 4w can extend to fill the gap between the electromagnetic induction heating ring 32w and the information area 31w to improve the overall structural strength of the wireless information integration piece 100w'.

[0120] Next, the protective layer 5w will be described. The protective layer 5w is used to protect the information area 31w (i.e., chip 311w, antenna 312w, and a separately added battery) from external damage to the chip 311w and battery, thus preventing them from affecting the wireless information transmission capability. Its material can be selected from at least one of the group consisting of polyethylene terephthalate (PET), polypropylene (PP), polyethylene (PE), polyamide (PA), polyvinylidene chloride (PVDC), ethylene-vinyl alcohol copolymer (EVOH), polyethylene naphthalate (PEN), and polyimide (PI). In a preferred embodiment, the thickness of the protective layer 5w can be 12 μm to 100 μm.

[0121] Furthermore, either the upper or lower surface of the protective layer 5w can be used as the printing surface. Therefore, although Figure 10 shows the case where the base film 1w is on the bottom and the protective layer 5w is on the top (the upper surface of the protective layer 5w can be used as the printing surface), the order of the base film 1w and the protective layer 5w can be reversed as needed, that is, the case where the base film 1w is on the top and the protective layer 5w is on the bottom (the lower surface of the protective layer 5w can be used as the printing surface).

[0122] Manufacturing of pull-up sealing gaskets

[0123] Based on the following steps, a preferred example of the pull-up sealing gasket of this disclosure is manufactured.

[0124] First, the surface film roll is printed to produce a printed surface film roll. Then, an adhesive is applied to the composite surface of the printed surface film roll to dry-laminate the surface film roll with the connecting film roll. The roll is then placed in a curing chamber for more than 24 hours to produce a functional layer roll.

[0125] Then, an adhesive is applied to the underside of the electromagnetic induction heating layer roll, and the composite surfaces of the electromagnetic induction heating layer roll and the sealing film roll are dry-laminated and placed in a curing chamber for more than 24 hours to create the composite section of the electromagnetic induction heating layer and the sealing layer. Alternatively, as an alternative to the sealing layer, hot melt adhesive can be directly applied to the underside of the electromagnetic induction heating layer roll to create the composite section of the electromagnetic induction heating layer and the sealing layer.

[0126] Next, a release layer is applied to the lower surface of the bonding film of the functional layer roll. Then, a cutting die is used to cut the upper surface of the surface film according to the printed pattern (e.g., the patterns in Figures 2A, 2B to 4), cutting out the main cutting line (if necessary), secondary cutting line, cutout area, first tear area (lifting part and lifting neck, etc.) and second tear area (if necessary). The coating area of ​​the release layer is not less than the lifting part, and the cutout area removes the thickness of the functional layer by hollowing it out, that is, the thickness of the cutout area is similar to the composite part of the electromagnetic induction heating layer and the adhesive layer.

[0127] A strong adhesive dry composite adhesive (or a hot melt composite adhesive with high peel strength) is applied to the upper surface of the electromagnetic induction heating layer as a strong adhesive layer, so that the electromagnetic induction heating layer and the lower surface of the bonding film coated with the release layer are dry-composite. After curing in the curing chamber for more than 24 hours, a pull-out sealing gasket roll is produced.

[0128] Finally, the upper surface of the surface film of the pull-up sealing gasket roll is cut to produce pull-up sealing gaskets of the required size.

[0129] The peel strength between the two layers of material bonded by the adhesive (e.g., a dry laminating adhesive) is greater than 4 N / 15 mm, and the peel strength between the two layers of material bonded by the strong adhesive layer, measured according to ASTM D903 standard, is greater than 12 N / 15 mm. The temperature of the drying tunnel above the printing press is 60℃~70℃, and the temperatures of the five sections of the drying tunnel above the dry laminating machine are 60℃~65℃, 65℃~70℃, 70℃~75℃, 75℃~80℃, and 80℃~85℃, respectively. The temperature of the laminating roller of the dry laminating machine is 50℃~60℃. The temperature of the curing chamber is 50℃~55℃.

[0130] On the other hand, the functional layer of the variant can be created based on the following steps.

[0131] First, an adhesive is applied to the surface film roll, which is then dry-laminated with the foamed film roll. The mixture is then placed in a curing chamber for more than 24 hours to produce the first composite roll.

[0132] Secondly, an adhesive is applied to the lower surface of the foam film of the first composite roll, so that the first composite roll and the upper surface of the foam film roll are dry-laminated, and then placed in a curing chamber for more than 24 hours to produce the second composite roll.

[0133] Furthermore, an adhesive is applied to the lower surface of the composite film roll, which is then dry-laminated with the connecting film roll and placed in a curing chamber for more than 24 hours to produce the third composite roll.

[0134] Finally, an adhesive is applied to the upper surface of the composite film of the third composite section roll, and the third composite section roll is dry-laminated with the lower surface of the foamed film of the second composite section roll. The mixture is then placed in a curing chamber for more than 24 hours to produce the functional layer of the modified example.

[0135] The peel strength between the two layers of material bonded by the adhesive is greater than 4 N / 15 mm. The five temperature sections of the upper drying tunnel of the dry laminator are 60℃~65℃, 65℃~70℃, 70℃~75℃, 75℃~80℃, and 80℃~85℃, respectively. The temperature of the laminating rollers of the dry laminator is 50℃~60℃. The temperature of the curing chamber is 50℃~55℃.

[0136] In addition, regarding the method of lamination, the aforementioned dry lamination method or known methods such as adhesive bonding or pressing can be used, without any particular restrictions.

[0137] Production of wireless information integration sheet rolls

[0138] Based on the following steps, a preferred embodiment of the wireless information integration sheet roll of the present disclosure is manufactured. The wireless information integration sheet roll described herein can be used as an embodiment of the aforementioned electromagnetic induction heating layer roll in the process of manufacturing the aforementioned pull-up sealing gasket roll.

[0139] First, a composite adhesive (first adhesive layer) is applied to the composite surface of the base film roll, and then laminated with the composite surface of the metal foil roll to create a wireless information integrated circuit preform roll. Next, the metal foil of the wireless information integrated circuit preform roll is etched to connect the antenna and chip electrically. Then, chip encapsulation protective adhesive is used with a dispensing machine to encapsulate the chip and the bonding wires connecting the chip and antenna. At this point, the metal foil of the wireless information integrated circuit preform roll forms the information and heating layer, and the wireless information integrated circuit preform roll becomes the wireless information integrated circuit roll.

[0140] The peel strength between the two layers of materials bonded by the composite adhesive is greater than 4N / 15mm.

[0141] In addition, if a battery is to be added to the information and heating layer, a welding machine or conductive adhesive can be used to process the battery cells and the chip into an electrical connection.

[0142] On the other hand, based on the aforementioned wireless information integrated sheet roll, a dry composite adhesive (second adhesive layer) is applied to the composite surface of the protective layer roll, and the information of the wireless information integrated sheet roll is dry-laminated with the surface of the heating layer (the surface away from the base film). After curing in a curing chamber for more than 24 hours, another embodiment of the wireless information integrated sheet roll can be produced.

[0143] The peel strength between the two layers of material bonded by the dry laminating adhesive is greater than 4 N / 15 mm. The five temperature sections of the upper drying tunnel of the dry laminating machine are 60℃~65℃, 65℃~70℃, 70℃~75℃, 75℃~80℃, and 80℃~85℃, respectively. The temperature of the laminating roller of the dry laminating machine is 50℃~60℃. The temperature of the curing chamber is 45℃~60℃.

[0144] It should be noted that the above description is only a specific example, and the manufacturing order of the above layers is not particularly limited. Although the manufacturing of a pull-up sealing gasket with a two-layer structure mainly containing a surface film and a connecting film is described here, the functional layer of the modified example can be used as a substitute for the above two-layer structure, and other composite methods (adhesion, bonding, coating, film coating or connection, etc.) can be used as substitutes for dry composite.

[0145] Furthermore, to make the embodiments covered by the pull-up sealing gasket of this disclosure clearer, this disclosure will further provide other specific examples to further illustrate other variations of the upper surface of the pull-up sealing gasket. Please refer to Figures 11A to 11C, which are top views illustrating other specific embodiments of the pull-up sealing gasket 50. It should be noted that subsequent descriptions will focus on variations such as the pull-up portion, pull-up neck, cutout area, first tear line, and second tear line. Since the remaining content is substantially the same as that illustrated in Figures 2A to 4, it will not be repeated here.

[0146] As shown in Figure 11A, the upper surface of the surface film of the pull-up sealing gasket 50 (i.e., the upper surface of the pull-up sealing gasket 50) is provided with a first tear area 1122, a hollow area 1121, a first tear line 1122c, a second tear line 1122d, and a secondary cutting line 9b. The first tear line 1122c corresponds to the line segment of point almn, and the second tear line 1122d corresponds to the line segment of point deop. In addition, in Figure 11A, the first tear area 1122 includes: a lifting portion 1122a, which corresponds to the almost circular area enclosed by points abcda; and a lifting neck 1122b (corresponding to the area between the line connecting points kf and ad), which is connected to the bottom end of the lifting portion 1122a and has a first contact point 1122b1 (i.e., point a) and a second contact point 1122b2 (i.e., point d). Here, one end of the first tear line 1122c (corresponding to the line connecting points almn) is connected to the first contact point 1122b1, while one end of the second tear line 1122d (corresponding to the line connecting points deop) is connected to the second contact point 1122b2. Additionally, in Figure 11A, the other end of the first tear line 1122c (i.e., point n) is connected to the outermost cut line of the pull-up sealing gasket 50, and the other end of the second tear line 1122d (i.e., point p) is also connected to the outermost cut line of the pull-up sealing gasket 50, thereby completing the closure of the first tear area 1122. In this way, when the user holds the lifting part and pulls it upward along the lifting part 1122a, the lifting neck 1122b, the first tear line 1122c and the second tear line 1122d, the first tear area 1122 can be completely torn open, thereby achieving the effect of partially opening the sealing gasket.

[0147] On the other hand, as shown in Figure 11A, the cutout area 1121 is cut by the secondary cutting line 9b, which is equivalent to the line connecting points abcdefghijkla and is located on the periphery of the lifting part 1122a. The cutout area 1121 is the part where the functional layer is removed, so that the thickness of the cutout area 1121 is less than the lifting sealing gasket, thereby allowing the user's fingernail and fingertip to poke open the bottom of the lifting part. The cutout area 1121 is connected to both sides of the lifting neck 1122b. Taking Figure 11A as an example, one end of the cutout area 1121 (i.e., point k) is connected to the first contact point 1122b1 (i.e., point a) of the lifting neck 1122b, while the other end of the cutout area 1121 (i.e., point f) is connected to the first contact point 1122b2 (i.e., point d) of the lifting neck 1122b.

[0148] As a specific example of the pull-up sealing gasket (including the main cutting line) disclosed herein, in order to achieve the effect of two-stage tearing, as shown in FIG11B, a main cutting line 9a is provided on the upper surface of the surface film 11 of the functional layer (i.e., the upper surface of the pull-up sealing gasket 50). The main cutting line 9a divides the surface film 11 into an outer ring 111 and an inner ring 112, and the inner side of the outer ring 111 is connected to the outer side of the inner ring 112. During the process of tearing the pull-up sealing gasket 50 with fingers, the outer ring 111 will not be damaged and can be pressed back onto the container opening.

[0149] As shown in Figure 11B, the inner ring 112 is composed of a cutout area 1121, a first tearing area 1122, and other areas. Specifically, the cutout area 1121 refers to the area enclosed by points abcdefghijka, and it is not torn along with the first tearing area 1122, but is torn as part of the second tearing area 1123 during the second tearing; the first tearing area 1122 refers to the area enclosed by points abcdenmlka. In addition, the second tearing area 1123 corresponds to the area of ​​the main cutting line 9a and the inner ring 112 other than the first tearing area 1122, that is, the second tearing area 1123 includes the cutout area 1121 and other areas.

[0150] As shown in Figure 11B, the other end of the first tear line 1122c (equivalent to the line connecting points aklm) (i.e., point m) is connected to the main cutting line 9a, and the other end of the second tear line 1122d (equivalent to the line connecting points denm) (i.e., point m) is also connected to the main cutting line 9a.

[0151] In this way, when the user holds the lifting part and pulls it upward along the lifting part 1122a (equivalent to the area enclosed by points abcda), the neck 1122b (equivalent to the area between the line connecting points jf and the line connecting points ad), the first tear line 1122c and the second tear line 1122d, the first tear area 1122 is completely torn open, thereby making the sealing gasket present a teardrop-shaped opening.

[0152] Next, by pinching a portion of the second tear zone 1123 with their fingers (e.g., pinching point f), the user can further tear the second tear zone 1123, making the sealing gasket open to its maximum extent, leaving only the outer ring 111. In this way, the sealing gasket can be torn open in two stages.

[0153] In this embodiment, the main cutting line 9a has at least three break points, and the first tear line 1122c and the second tear line 1122d together have at least three break points. This ensures that even if the functional layer 1 is cut or the cut-out area is removed, the sections of the functional layer 1 remain connected at the break points and do not scatter. In another embodiment, the ends of the upper surface of the functional layer 1 corresponding to these break points are not cut in the vertical direction at a distance of 0.02 mm to 0.9 mm along the horizontal direction of the main cutting line 9a, the first tear line 1122c, and / or the second tear line 1122d. The portions of the functional layer 1 corresponding to the main cutting line 9a, the first tear line 1122c, and / or the second tear line 1122d, excluding the break points, are completely cut off. Therefore, when the user pinches the pull part with their hand and tears along the tear line to the break point, a short pause will be created in the tearing action to continue to accumulate and increase the tearing force, which is more conducive to subsequent tearing. In addition, during the processing, the presence of the break point also pulls the pull part and the pull neck to prevent them from drooping or floating up, so as to avoid poor quality during the processing.

[0154] Furthermore, in this embodiment, the secondary cutting line 9b (equivalent to the line segment formed by points abcdefghijka) has no breakpoints, thereby enabling the residual material of the cutout area to easily detach from the functional layer 1 after the outline of the cutout area is cut out.

[0155] Similarly, as shown in Figure 11C, the upper surface of the surface film of the pull-up sealing gasket 50 (i.e., the upper surface of the pull-up sealing gasket 50) is provided with a first tear area 1122, a hollow area 1121, a first tear line 1122c, a second tear line 1122d, and a secondary cutting line 9b. The first tear line 1122c corresponds to the line segment of point almn, and the second tear line 1122d corresponds to the line segment of point deop. In addition, in Figure 11C, the first tear area 1122 includes: a lifting portion 1122a, which corresponds to the roughly circular area enclosed by points abcda; and a lifting neck 1122b (corresponding to the area between the line connecting points kf and ad), which is connected to the bottom end of the lifting portion 1122a and has a first contact point 1122b1 (i.e., point a) and a second contact point 1122b2 (i.e., point d). Here, one end of the first tear line 1122c (corresponding to the line connecting points almn) is connected to the first contact point 1122b1, while one end of the second tear line 1122d (corresponding to the line connecting points deop) is connected to the second contact point 1122b2. Additionally, in Figure 11C, the other end of the first tear line 1122c (i.e., point n) is connected to the inner ring cut line 9c of the pull-up sealing gasket 50, and the other end of the second tear line 1122d (i.e., point p) forms the open end. The inner ring cut line 9c is used to distinguish between the closed first tear area 1122 and the second tear area 1123. In this way, when the user holds the lifting part and pulls it upward along the lifting part 1122a, the lifting neck 1122b, the first tear line 1122c and the second tear line 1122d, the first tear area 1122 can be completely torn open, thereby achieving the effect of partially opening the sealing gasket.

[0156] Next, after the first tear section 1122 is completely torn open, the sealing gasket will have a circular opening. Then, by pinching a portion of the second tear section 1123 with your fingers (for example, pinching any part of the inner ring cutting line 9c), the second tear section 1123 can be further torn open, making the sealing gasket open to its maximum. In this way, the sealing gasket can be torn open in two stages.

[0157] This disclosure is not limited to the above-described embodiments. Various modifications can be made within the scope indicated in the claims. Furthermore, embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included within the technical scope of this disclosure.

[0158]

Symbol Explanation

Claims

1. A pull-up sealing gasket, comprising: The functional layer, from top to bottom, includes a surface film and a connecting film; An adhesive layer, which is located below this functional layer; A release layer and a strong adhesive layer, wherein the release layer and the strong adhesive layer are located between the surface film and the sealing layer; as well as An electromagnetic induction heating layer is located between the surface film and the sealing layer; The functional layer of the pull-up sealing gasket includes a first tear-off area, a hollow area, a first tear line, a second tear line, and a secondary cutting line. The first tear-open area includes: Lifting section; The neck is connected to the bottom end of the lifting part and has a first contact point and a second contact point; One end of the first tear line is connected to the first contact point; and One end of the second tear line is connected to the second contact point; and The hollow area is cut by the cutting line and its thickness is less than that of the pull-up sealing gasket. The hollow area is located on the periphery of the pull-up part and is connected to both sides of the pull-up neck. The release layer and the strong adhesive layer are located on the lower surface of the connecting film corresponding to the pull-up part, or on the upper or lower surface of the electromagnetic induction heating layer.

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

7. The pull-out sealing gasket according to 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-up sealing gasket according to 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-up sealing gasket according to 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. The pull-out sealing gasket according to 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-out sealing gasket according to 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-out sealing gasket according to 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 selected from at least one of 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 selected from at least one of 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 according to any one of claims 1 to 6, wherein, This strong adhesive layer provides a peel strength greater than 12 N / 15 mm between the bonding membrane and the electromagnetic induction heating layer.

14. The pull-up sealing gasket according to 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. The pull-out sealing gasket according to 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. The pull-out sealing gasket according to 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. The pull-out sealing gasket according to 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 according to any one of claims 1 to 6, wherein, The electromagnetic induction heating layer is made of aluminum foil or a wireless information integration sheet.

19. The pull-up sealing gasket according to claim 18, wherein, The wireless information integrated chip includes: a base film; an information and heating layer, which 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; wherein the information area has an antenna and a chip that are mutually connected, and the electromagnetic induction heating ring surrounds the information area in a planar view.

20. The pull-out sealing gasket according to claim 19, 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.

21. The pull-up sealing gasket according to claim 19, wherein, The inner edge of the electromagnetic induction heating ring also includes an inner cutting line, which has multiple breaks. The ends of the upper surface of the functional layer corresponding to these 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 these breaks is completely cut off. The inner cutting line is located between the information area and the electromagnetic induction heating ring and surrounds the information area.

22. The pull-out sealing gasket according to claim 19, wherein, There is a gap between the electromagnetic induction heating ring and the information area.

23. The pull-out sealing gasket according to claim 19, wherein, The electromagnetic induction heating ring is filled with gaps between itself and the information area.

24. The pull-out sealing gasket according to claim 22, 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.

25. The pull-out sealing gasket according to claim 19, wherein, The information and heating layer also includes at least one physical connection bridge for connecting the information area with the electromagnetic induction heating ring.

Images