Easy-peel sealing gasket

Abstract

An easy-peel sealing gasket, comprising a functional layer, a strong adhesive layer, an electromagnetic induction heating layer, a release layer and an adhesive sealing layer, wherein the functional layer sequentially comprises a surface film and a bonding film from top to bottom; the adhesive sealing layer is located below the functional layer; the strong adhesive layer is located between the surface film and the adhesive sealing layer; and the electromagnetic induction heating layer is located between the surface film and the adhesive sealing layer. The upper surface of the easy-peel sealing gasket comprises a pull portion, a pull neck portion and a hollowed-out region, wherein the hollowed-out region is formed by cutting along a hollowed-out cutting line; the hollowed-out region is located at the periphery of the pull portion; and the hollowed-out region is connected to two sides of the pull neck portion. The thickness of the easy-peel sealing gasket corresponding to the hollowed-out region is less than the maximum thickness of the easy-peel sealing gasket. The functional layer of the easy-peel sealing gasket is provided with a tear line, wherein one end of the tear line is connected to the pull portion, and the other end of the tear line is spaced apart from the outermost edge of the easy-peel sealing gasket by a tearing spacing; and the tear line is provided with at least one tear cutoff point. The structure of the sealing gasket effectively improves the convenience of peeling open the sealing gasket.

Description

Easy-open sealing gasket

[0001] Relevant publicly available cross-references

[0002] This disclosure claims priority to PCT patent publication entitled “Easy-to-open sealing gasket”, filed on April 27, 2025, with Chinese Patent Office, publication number PCT / CN2025 / 091476, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to a sealing gasket, and more particularly to an easy-open 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, the design of known sealing gaskets mainly considers sealing performance, but not ease of opening. In this case, it is not easy to open the aluminum foil or cardboard at the container opening by pressing with your fingers, while cutting with a knife or poking with an awl is both troublesome and dangerous. Moreover, the above methods are prone to leaving some sealing gasket, which causes inconvenience to users.

[0007] Therefore, how to solve the aforementioned problems encountered by known sealing gaskets and effectively improve the ease of opening has become an urgent problem that this technical field hopes to solve.

[0008] To address the aforementioned problems, this disclosure provides an easy-open sealing gasket, comprising: a functional layer, which includes a surface film and a bonding film from top to bottom; an adhesive layer located below the functional layer; 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 upper surface of the easy-open sealing gasket includes: a lifting portion; a lifting neck; and a hollow area, which is cut by a hollow cutting line, the hollow area being located around the lifting portion and connecting to both sides of the lifting neck; wherein the thickness of the easy-open sealing gasket corresponding to the hollow area is less than the thickness of the surface film and the bonding film; The maximum thickness of the easy-open sealing gasket; wherein, the functional layer of the easy-open sealing gasket is provided with a tear line, one end of the tear line is connected to the lifting part, and the other end of the tear line is separated from the outermost ring of the easy-open sealing gasket by a tear gap, the tear gap being greater than 0 mm and less than or equal to 20 mm; wherein, the tear line is provided with at least one tear cutting point; and wherein, the easy-open sealing gasket also includes a release layer, the release layer being located on the lower surface of the connecting film corresponding to the lifting part, or on the upper or lower surface of the electromagnetic induction heating layer corresponding to the lifting part, the lifting neck and the hollow area.

[0009] In some embodiments, the functional layer corresponding to the at least one tear-cut point is not completely cut in the vertical direction, and the functional layer corresponding to the tear line other than the at least one tear-cut point is completely cut.

[0010] In some embodiments, the upper surface of the functional layer corresponding to the at least one tear-cut point is not cut in the vertical direction at a distance of 0.02 mm to 0.9 mm from the horizontal direction of the tear line, and the functional layer corresponding to the tear line other than the at least one tear-cut point is completely cut off.

[0011] In some embodiments, the upper surface of the easy-open sealing gasket is further provided with a tear-twist cutting line, which is connected to the lifting portion, and the tear line and the tear-twist cutting line are respectively connected to both ends of the lifting portion.

[0012] In some embodiments, the material of the surface film is selected from at least one of the group consisting of polyimide (PI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polypropylene (PP), polyethylene (PE), and polyamide (PA).

[0013] In some embodiments, the material of the connecting membrane is selected from at least one of the group consisting of expandable polyethylene (EPE), expandable polypropylene (EPP), PE, PP, PET and PA.

[0014] In some embodiments, the sealing layer is a combination of hot melt adhesive or sealing film and adhesive. The hot melt adhesive is selected from at least one of the group consisting of ethylene / vinyl acetate copolymer (EVA), polyisobutylene (PIB), ethylene-acrylic acid copolymer (EAA), ethylene-ethyl acrylate copolymer (EEA), ethylene-butyl acrylate copolymer (EBA), ethylene-methacrylic acid copolymer (EMAA), ethylene-methyl acrylate copolymer (EMAC), polyacrylate, and acrylic copolymer. The sealing film is selected from PE, PP, PET, PA, polyvinylidene chloride (PVDC), and ethylene-vinyl alcohol copolymer. The adhesive is at least one of the group consisting of Alcohol (EVOH) and is located between the sealing film and the electromagnetic induction heating layer.

[0015] In some embodiments, the strong adhesive layer is a dry composite adhesive or a hot melt laminate, wherein the dry composite adhesive or the hot melt laminate results in a peel strength greater than 12N / 15mm after the bonding film and the electromagnetic induction heating layer are combined. The material of the hot melt laminate is selected from at least one of the group consisting of PE, PP, EMAA, EAA, EEA, EMAC and ethylene-methyl methacrylate copolymer (EMMA).

[0016] In some embodiments, the material of the release layer is selected from at least one of the group consisting of wax, varnish and silicone oil, the release layer is applied to the lower surface of the bonding film or the electromagnetic induction heating layer, and the application area of ​​the release layer is not less than the lifting portion.

[0017] In some embodiments, the release layer is made of at least one of the group consisting of wax, varnish and silicone oil, 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 lifting portion and the hollowed-out area.

[0018] In some embodiments, a composite film is further included between the surface film and the connecting film, the composite film being made of at least one material selected from the group consisting of PI, PEN, PET, PA, PP, PE, EPE and EPP.

[0019] In some embodiments, the electromagnetic induction heating layer is an aluminum foil or a wireless information integration sheet.

[0020] In some embodiments, the wireless information integrated sheet includes: a base film; an information and heating layer including 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.

[0021] In some embodiments, the wireless information integration sheet further includes: a protective layer located on the side of the information and heating layer away from the base film; and a second adhesive layer located between the information and heating layer and the protective layer.

[0022] In some embodiments, there is a gap between the electromagnetic induction heating ring and the information area.

[0023] In some embodiments, the interval is the distance between the outermost edge of the information area and the innermost edge of the electromagnetic induction heating ring, and the distance is 0.1 mm to 3 mm.

[0024] In some embodiments, the electromagnetic induction heating ring is filled with a gap between itself and the information area.

[0025] In some embodiments, the information and heating layer further includes at least one physical connection bridge for connecting the information area and the electromagnetic induction heating ring.

[0026] Those skilled in the art to which this disclosure pertains can use the easy-open sealing gasket provided by this disclosure to not only prevent leakage of contents and deterioration due to external environmental influences, but also allow users to directly pinch the lifting part with their hands and pull it up along the lifting part, lifting neck and tear line without the aid of external objects. This allows each layer in the easy-open sealing gasket to be pulled up with the lifting part, thereby further achieving the effect of easy opening and complete peeling.

[0027] One aspect of this disclosure addresses the problems of the aforementioned known technologies, with the aim of providing an easy-open sealing gasket that further enhances the ease of opening for the user and the integrity of the sealing gasket upon opening. In other words, the easy-open sealing gasket provided by this disclosure simultaneously ensures the airtightness of the contents, the ease of opening for the user, and the integrity of the sealing gasket upon opening. Attached Figure Description

[0028] Figure 1A is a cross-sectional schematic diagram illustrating the easy-open sealing gasket of this disclosure.

[0029] Figure 1B is a cross-sectional schematic diagram illustrating the first variation of the easy-open sealing gasket shown in Figure 1A.

[0030] Figure 1C is a cross-sectional schematic diagram illustrating a second variation of the easy-open sealing gasket shown in Figure 1A.

[0031] Figure 2 is a top view schematic diagram illustrating the easy-open sealing gasket of the first embodiment of the present disclosure.

[0032] Figure 3 is a top view schematic diagram illustrating the easy-open sealing gasket of the second embodiment of the present disclosure.

[0033] Figure 4 is a top view schematic diagram illustrating the easy-open sealing gasket of the third embodiment of this disclosure.

[0034] Figure 5 is a top view schematic diagram illustrating the easy-open sealing gasket of the fourth embodiment of this disclosure.

[0035] Figure 6A is a cross-sectional schematic diagram illustrating a second variation of the easy-open sealing gasket shown in Figure 1A.

[0036] Figure 6B is a cross-sectional schematic diagram illustrating the third variation of the easy-open sealing gasket shown in Figure 1A.

[0037] Figure 6C is a cross-sectional schematic diagram illustrating the fourth variation of the easy-open sealing gasket shown in Figure 1A.

[0038] Figure 7 is a cross-sectional schematic diagram illustrating the wireless information integration chip of the first embodiment of the present disclosure.

[0039] Figure 8A is a plan view illustrating the information of this disclosure and a specific example of a heating layer.

[0040] Figure 8B is a plan view illustrating another specific example of the heating layer used to explain the information of this disclosure.

[0041] Figure 9A is a plan view illustrating a specific example of the information area of ​​this disclosure.

[0042] Figure 9B is a plan view illustrating another specific example of the information area of ​​this disclosure.

[0043] Figure 10 is a cross-sectional schematic diagram illustrating the wireless information integration chip of the second embodiment of the present disclosure.

[0044] Figures 11A to 11C are top views illustrating other specific examples of the present disclosure of easy-open sealing gaskets.

[0045] Preferred embodiments of this disclosure

[0046] 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.

[0047] Unless otherwise stated herein, the term "A to B" as used in the specification and the appended claims of the patent disclosure 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".

[0048] Furthermore, it should be noted that in the descriptions herein, terms such as "first," "second," and "third" are used to distinguish between elements, not to limit the elements themselves or to indicate a specific order of elements. It should also be noted that in the descriptions below, the same elements or steps may be represented by the same numbering.

[0049] Additionally, in the content described in this disclosure, "tear gap" refers to "the shortest distance from one end of the tear line (i.e., relative to the other end connected to the pull part) to the outermost ring of the easy-open sealing gasket".

[0050] Please refer to Figure 1A, which is a cross-sectional schematic diagram illustrating the easy-open sealing gasket 50 of this disclosure. As shown in Figure 1A, the easy-open sealing gasket 50 includes, from top to bottom: a functional layer 100, a strong adhesive layer 200, an electromagnetic induction heating layer 300, and an adhesive sealing layer 400. The functional layer 100 includes, from top to bottom, a surface film 110 and a bonding film 120. A release layer 210 is also included between the functional layer 100 and the electromagnetic induction heating layer 300. Each layer will be described in detail below.

[0051] Surface film

[0052] As shown in Figure 1A, the surface film 110 is used to form the surface layer (i.e., the uppermost layer) of the easy-open sealing gasket 50. Either its upper or lower surface can be a printable surface for printing different patterns. In some embodiments, the material of the surface film 110 can be at least one selected from the group consisting of PI, PEN, PET, PP, PE, and PA. The thickness of the surface film 110 is preferably 12 to 150 μm. Within this range, it exhibits higher tensile strength, a smoother surface, and better gloss. Additionally, when heat conduction is felt beneath the easy-open sealing gasket 50, the surface film 110 can be prevented from adhering to other external components (such as bottle caps).

[0053] Connecting membrane

[0054] As shown in Figure 1A, the bonding film 120 is used to laminate with the electromagnetic induction heating layer 300 described later. In some embodiments, the material of the bonding film 120 may be at least one selected from the group consisting of EPE, EPP, PE, PP, PET, and PA. The thickness of the bonding film 120 is preferably 12 to 200 μm; thereby, the peel strength after the bonding film 120 and the electromagnetic induction heating layer 300 are laminated can be improved.

[0055] Strong adhesive layer

[0056] As shown in Figure 1A, a strong adhesive layer 200 is located between the connecting film 120 and the electromagnetic induction heating layer 300. It can be used to composite the connecting film 120 and the electromagnetic induction heating layer 300, so that the peel strength after composite bonding between the connecting film 120 and the electromagnetic induction heating layer 300 is greater than 12N / 15mm. Because a release layer 210 is also present between the connecting film 120 and the electromagnetic induction heating layer 300, and the release layer 210 is an easily peelable material, the strong adhesive layer 200 can be further used to tightly composite the connecting film 120, the release layer 210, and the electromagnetic induction heating layer 300 together, and to achieve a peel strength greater than 12N / 15mm after composite bonding. In some embodiments, the strong adhesive layer 200 can be, for example, a dry composite adhesive, and the thickness of the dry composite adhesive is preferably 0.5 to 6 μm, but is not limited thereto. In other embodiments, the strong adhesive layer 200 may also be, for example, a hot melt adhesive. The material of the hot melt adhesive may be at least one selected from the group consisting of PE, PP, EMAA, EAA, EEA, EMAC, and EMMA, and the thickness of the hot melt adhesive is preferably 4 to 50 μm, but is not limited thereto. Thus, through the configuration of the strong adhesive layer 200, when the user pinches the lifting part described later and pulls it upwards to peel it off, it will be easier to pull up and peel off each layer of the easy-open sealing gasket 50 together. In some embodiments, taking FIG. 1A (or FIG. 1B described later) as an example, the strong adhesive layer 200 is located between the functional layer 100 and the electromagnetic induction heating layer 300; in other embodiments, taking FIG. 1C described later as an example, the strong adhesive layer 200 is located between the electromagnetic induction heating layer 300 and the sealing layer 400.

[0057] Release layer

[0058] As shown in Figure 1A, the release layer 210 is located between the bonding film 120 and the electromagnetic induction heating layer 300. In some embodiments, the material of the release layer 210 may be at least one selected from the group consisting of wax, varnish, and silicone oil, and the thickness of the release layer 210 is preferably 0.5 to 40 μm, but is not limited thereto. The surface of the release layer 210 may be, for example, glossy, matte, or dotted, thereby giving the release layer 210 an easy-to-peel characteristic. Through the configuration of the release layer 210, the lifting portion (described later) is less likely to stick to the underlying electromagnetic induction heating layer 300, allowing the user to more easily lift the lifting portion, thereby making it easier for the layers in the easy-open sealing gasket 50 to be pulled upwards with the lifting portion, thus improving the user's ease of opening. In some embodiments, taking FIG1A as an example, the release layer 210 is located on the lower surface of the connecting film 120 corresponding to the lifting portion described later; in other embodiments, taking FIG1B as an example described later, the release layer 210 is located on the upper surface of the electromagnetic induction heating layer 300 corresponding to the lifting portion, lifting neck and hollow area described later; in other embodiments, taking FIG1C as an example described later, the release layer 210 is located on the lower surface of the electromagnetic induction heating layer 300 corresponding to the lifting portion, lifting neck and hollow area described later.

[0059] Furthermore, in some embodiments, taking FIG1A as an example, when the release layer 210 is coated on the lower surface of the connecting film 120, the coating area of ​​the release layer 210 is not smaller than the area corresponding to the lifting part; thereby, after the functional layer 100 is cut off the hollow area described later, and after the functional layer 100 is laminated with the layer below, it can be ensured that the lifting part is not easily stuck to the electromagnetic induction heating layer 300 below, so that the lifting part can be more easily pinched up, thereby improving the convenience of the user to peel it off.

[0060] Electromagnetic induction heating layer

[0061] In some embodiments, the electromagnetic induction heating layer 300 may be, for example, aluminum foil or a wireless information integration sheet. The aluminum foil may be a structure already existing in known sealing gaskets, and its thickness is preferably 10 μm to 40 μm, thereby enhancing its barrier function against moisture and oxygen, thus preventing leakage of contents and sealing and preserving the contents. This disclosure may use the wireless information integration sheet described later to replace the aluminum foil, which can effectively reduce the amount of aluminum foil used and lower energy consumption. Specifically, the wireless information integration sheet of this disclosure can increase the function of wireless information transmission, reduce aluminum foil material waste, lower energy consumption, avoid manpower waste, avoid interference from metals and liquids, improve production efficiency, provide good communication performance and significantly increase communication distance, thereby greatly improving the automation, digitalization and intelligent development of factories, warehouses, logistics, shops, and unmanned checkout management.

[0062] Adhesive layer

[0063] The sealing layer 400 is used to seal the container opening to prevent leakage of the contents and / or deterioration due to external environmental influences. In some embodiments, taking FIG1A as an example, the sealing layer 400 may be, for example, a hot melt adhesive, but is not limited thereto. The hot melt adhesive may be made of at least one of the group consisting of EVA, PIB, EAA, EEA, EBA, EMAA, EMAC, polyacrylate, and acrylic copolymers, but is not limited thereto, and the thickness of the hot melt adhesive is preferably 4 μm to 100 μm. With hot melt adhesives formulated from certain types, adhesives can be eliminated, and a continuous sealing effect can be achieved even when the contents of the glass container contain water, and a continuous sealing effect can also be achieved when the contents of the glass container contain chili peppers, garlic, fermented bean curd, honey, or spicy additives.

[0064] In other embodiments, taking FIG6C as an example, the adhesive layer 400 may also be, for example, a combination of an adhesive film 410 and an adhesive 420, with the adhesive 420 located between the adhesive film 410 and the electromagnetic induction heating layer 300. In some embodiments, the material of the adhesive film 410 may be at least one selected from the group consisting of PE, PP, PET, PA, PVDC, and EVOH, and the thickness of the adhesive film 410 is preferably 12 μm to 100 μm; while the adhesive 420 may be a known adhesive (e.g., dry composite adhesive, etc.), but is not limited thereto.

[0065] As described above, when the sealing layer 400 uses a combination of hot melt adhesive or sealing film and adhesive, it makes it easier for the user to peel off the easy-open sealing gasket 50 from the bottle opening, or makes it easier for the user to peel off the clean easy-open sealing gasket 50 from the bottle opening. Furthermore, although not shown in FIG1A, the layers in the functional layer 100 of the easy-open sealing gasket 50 of this embodiment can be laminated in various ways (e.g., adhesive, bonding, or lamination). In other words, those skilled in the art to which this disclosure pertains can use known adhesives (e.g., dry composite adhesives) to laminate the layers in the functional layer 100 (i.e., the composite surface film 110 and the connecting film 120 shown in FIG1A).

[0066] Please refer to Figure 1B, which is a cross-sectional schematic diagram illustrating a first variation of the easy-open sealing gasket 50 shown in Figure 1A. More specifically, unlike the release layer 210 disclosed in Figure 1A, which is located on the lower surface of the connecting film 120 corresponding to the lifting portion, the release layer 210 disclosed in Figure 1B is located on the upper surface of the electromagnetic induction heating layer 300 corresponding to the lifting portion, lifting neck, and hollow area. The other components in Figure 1B are substantially the same as those in the easy-open sealing gasket 50 shown in Figure 1A, and therefore will not be described again here.

[0067] Taking Figure 1B as an example, when the release layer 210 is coated on the upper surface of the electromagnetic induction heating layer 300, the coating area of ​​the release layer 210 is not less than the area corresponding to the lifting part and the hollow area, and the coating area of ​​the release layer 210 is not greater than, for example, the second coating range 820 shown in Figures 2 to 5 described later; thereby, after the functional layer 100 is laminated with the underlying layer, after the hollow area is cut off downward from the surface film 110 direction of the functional layer 100, the hollow area can be easily removed, and the lifting part can be prevented from being stuck to the underlying electromagnetic induction heating layer 300, thereby making it easier to lift the lifting part and improving the convenience of the user to peel it off.

[0068] Please refer to Figure 1C, which is a cross-sectional schematic diagram illustrating a second variation of the easy-open sealing gasket 50 shown in Figure 1A. More specifically, unlike Figure 1A, the strong adhesive layer 200 disclosed in Figure 1C is located between the electromagnetic induction heating layer 300 and the sealing layer 400, and the release layer 210 is located on the lower surface of the electromagnetic induction heating layer 300 corresponding to the lifting portion, lifting neck, and cutout area. The other components in Figure 1C are substantially the same as those in the easy-open sealing gasket 50 shown in Figure 1A, and therefore will not be described again here.

[0069] Taking Figure 1C as an example, when the release layer 210 is coated on the lower surface of the electromagnetic induction heating layer 300, the coating area of ​​the release layer 210 is not smaller than the area corresponding to the lifting part; thereby, after the functional layer 100 is laminated with the underlying layer, after the cutout area is cut off downward from the surface film 110 direction of the functional layer 100, the cutout area can be easily removed, and the lifting part can be prevented from being stuck to the underlying adhesive layer 400, thereby making the lifting part easier to lift up, thus improving the convenience of the user to peel it off.

[0070] Figures 1A, 1B, and 1C show cross-sectional views of the easy-open sealing gasket 50. The following will refer to the top views of the easy-open sealing gasket 50 of four different embodiments disclosed in Figures 2 to 5 to explain in detail the opening method of the easy-open sealing gasket 50 of each embodiment of the present disclosure.

[0071] Please refer to Figure 2, which is a top view schematic diagram illustrating the easy-open sealing gasket 50 of the first embodiment of this disclosure. In some embodiments, the shape of the easy-open sealing gasket 50 of this disclosure can be various geometric shapes, such as circular, square, rectangular, rhomboid, triangular, polygonal, conical, or trapezoidal. Taking Figure 2 as an example, Figure 2 discloses a circular easy-open sealing gasket 50.

[0072] As shown in Figure 2, the upper surface of the easy-open sealing gasket 50 may include a lifting portion 610, a lifting neck 620, a hollow area 630, and a peripheral area 640. Specifically, taking Figure 2 as an example, the lifting portion 610 corresponds to the area enclosed by points abcda, the lifting neck 620 corresponds to the area between points ge, the hollow area 630 corresponds to the area enclosed by points abcdefga, and the peripheral area 640 corresponds to the area surrounding the lifting portion 610, the lifting neck 620, and the hollow area 630.

[0073] The cutout area 630 is formed by a cutout line 720. For example, in Figure 2, the cutout line 720 is equivalent to the line connecting points a, b, c, e, f, g, and d. The cutout area 630 is located on the periphery of the lifting portion 610 and connects to both sides of the lifting neck 620. For example, in Figure 2, one end of the cutout area 630 (i.e., point g) connects to the left side of the lifting neck 620, while the other end (i.e., point e) connects to the right side of the lifting neck 620. The cutout area 630 removes the functional layer from the aforementioned cross-sectional structure, making the thickness of the easy-open sealing gasket 50 corresponding to the cutout area 630 less than the maximum thickness of the easy-open sealing gasket 50. This allows the user's fingernails and fingertips to poke open the bottom of the lifting portion 610, making it easier to lift and thus improving the user's ease of opening.

[0074] Next, the functional layer of the easy-open sealing gasket 50 is provided with a tear line 710. Taking Figure 2 as an example, the tear line 710 is equivalent to a line formed by connecting points aghi. One end of the tear line 710 (i.e., point a) is connected to the lifting part 610, while the other end of the tear line 710 (i.e., point i) is separated from the outermost ring OC of the easy-open sealing gasket 50 by a tear gap 715. In some embodiments, the tear gap 715 is greater than 0 mm and less than or equal to 20 mm. In a preferred embodiment, the tear gap 715 is greater than 0 mm and less than or equal to 10 mm. Therefore, through the configuration of the tear gap 715, when the user pinches the lifting part 610 and lifts it along the tear line 710, and after the end of the tear line 710 (i.e., point i) is torn off, the easy-open sealing gasket 50 will provide a buffering effect due to the termination of the tear line 710, thereby preventing the user from tearing off only part of the easy-open sealing gasket 50 (e.g., the lifting part 610 and the area above it) due to excessive force. This reminds the user to appropriately change their tearing force and direction to improve the integrity of the sealing gasket.

[0075] Furthermore, since the tear line 710 crosses one side of the lifting neck 620 (e.g., the left side of the lifting neck 620 as shown in Figure 2, i.e., point g), the user can sequentially pull up and peel off the lifting part 610, the lifting neck 620, the hollow area 630, and the outer area 640 in a clockwise direction, for example, so that each layer in the easy-open sealing gasket 50 is pulled up by the user, thereby allowing the user to completely peel off the easy-open sealing gasket 50.

[0076] Furthermore, in this embodiment, the tear line 710 has at least one tearing and cutting point, so that even if the functional layer is cut or the cutout area 630 is removed, the various sections of the functional layer can still remain connected at the tearing and cutting point, and will not fall apart. In some specific examples, the functional layer corresponding to the tearing and cutting point is not completely cut in the vertical direction (for example, the upper material of the functional layer is cut in the vertical direction, while the lower material of the functional layer is not cut), and the functional layer corresponding to the tear line 710 is completely cut except at the tearing and cutting point. In other specific examples, the upper surface of the functional layer corresponding to the tearing and cutting point is not cut in the vertical direction at a distance of 0.02 mm to 0.9 mm along the horizontal direction of the tear line 710, and the functional layer corresponding to the tear line 710 is completely cut except at the tearing and cutting point. Therefore, when the user pinches and lifts the pull part 610 and tears along the tear line 710 to the tear cutting point, a short pause will be formed in the peeling action, so as to accumulate increased tearing force and make it easier to peel it off later. In addition, during the processing, the presence of the tear cutting point also pulls the pull part 610 and the pull neck 620, so that they do not droop or float up, thus avoiding poor quality during the processing.

[0077] In addition, in this embodiment, the cut-out line 720 does not have a cut-out point, so that after the outline of the cut-out area 630 is cut out of the functional layer, the residual material of the cut-out area 630 can be more easily removed from the functional layer.

[0078] In some embodiments, if the release layer is coated on the lower surface of the bonding film or the electromagnetic induction heating layer, the coating area of ​​the release layer is not less than the area corresponding to the lifting part 610. Taking FIG2 as an example, the coating area of ​​the release layer is not less than the first coating range 810 (equivalent to the area enclosed by the dotted line in FIG2). In this way, after the functional layer cuts off the hollow area 630 and the functional layer is laminated with the layer below, it can be ensured that the lifting part 610 is not easily stuck to the electromagnetic induction heating layer or the sealing layer below, and the lifting part 610 can be lifted more easily, thereby improving the convenience of the user to peel it off. In another embodiment, if the release layer is coated on the upper surface of the electromagnetic induction heating layer, the coating area of ​​the release layer is not less than the area corresponding to the lifting portion 610 and the hollow area 630. Taking Figure 2 as an example, the coating area of ​​the release layer is not greater than the second coating range 820 (equivalent to the area enclosed by the dotted line in Figure 2). In this way, after the functional layer is laminated with the underlying layer and the hollow area 630 is cut off from the surface film direction of the functional layer, the hollow area 630 can be more easily removed, and the lifting portion 610 is not easily stuck to the underlying electromagnetic induction heating layer, and the lifting portion 610 can be more easily lifted up, thereby improving the convenience of the user to peel it off.

[0079] Furthermore, in this embodiment, the cutout line 720 and the tear line 710 can be combined into a large cut line 700. Taking Figure 2 as an example, the large cut line 700 is equivalent to a line formed by connecting the points gfedcbaghi. In some specific examples, the large cut line 700 can be formed by continuously arranging and shaping it with a single cutting blade, thus forming the large cut line in one go (or in one cut). In this way, the large cut line 700 can be cut out in a one-piece manufacturing process, thereby improving manufacturing convenience and making it easy to peel off and aesthetically pleasing.

[0080] Please refer to Figure 3, which is a top view schematic diagram illustrating the easy-open sealing gasket 50 of the second embodiment of this disclosure. More specifically, unlike the easy-open sealing gasket 50 disclosed in Figure 2, the lifting portion 610, the lifting neck 620, and the hollow area 630 disclosed in Figure 3 are all located in the same half of the easy-open sealing gasket 50.

[0081] As shown in Figure 3, the lifting portion 610 corresponds to the area enclosed by points abcda, the lifting neck 620 corresponds to the area between points he, the hollowed-out area 630 corresponds to the area enclosed by points abcdefga, and the outer area 640 corresponds to the area surrounding the lifting portion 610, the lifting neck 620, and the hollowed-out area 630. The tear line 710 corresponds to the line connecting points aghi, the hollowed-out cutting line 720 corresponds to the line connecting points abcdefga, and the large cutting line 700 corresponds to the line connecting points gfedcbaghi. Furthermore, the tear line 710 has at least one tearing / cutting point, while the hollowed-out cutting line 720 does not have a hollowed-out cutting point. In this embodiment, the lifting portion 610, the lifting neck 620, and the hollowed-out area 630 are all located in the same half of the easy-open sealing gasket 50, allowing the manufacturer to utilize the other half for other design considerations to meet their design needs, thereby improving the manufacturer's design flexibility and / or the aesthetics of the sealing gasket. In some specific examples, taking Figure 3 as an example, the lifting portion 610, the lifting neck 620, and the hollowed-out area 630 are all located in the upper half of the easy-open sealing gasket 50. In other specific examples, the lifting portion 610, the lifting neck 620, and the hollowed-out area 630 may also be located in the lower half, left half, or right half of the easy-open sealing gasket 50.

[0082] Furthermore, if the release layer is coated on the lower surface of the bonding film or the electromagnetic induction heating layer, the coating area of ​​the release layer is not less than the area corresponding to the lifting portion 610. Taking Figure 3 as an example, the coating area of ​​the release layer is not less than the first coating range 810 (equivalent to the area enclosed by the dashed line in Figure 3). If the release layer is coated on the upper surface of the electromagnetic induction heating layer, the coating area of ​​the release layer is not less than the area corresponding to the lifting portion 610 and the hollow area 630. Taking Figure 3 as an example, the coating area of ​​the release layer is not greater than the second coating range 820 (equivalent to the area enclosed by the dashed line in Figure 3).

[0083] Furthermore, since the components in Figure 3 are essentially the same as the easy-open sealing gasket 50 shown in Figure 2, and the functions produced by each component are also the same, they will not be described again here.

[0084] Please refer to Figure 4, which is a top view schematic diagram illustrating the easy-open sealing gasket 50 of the third embodiment of this disclosure. More specifically, unlike the easy-open sealing gasket 50 disclosed in Figure 3, the easy-open sealing gasket 50 disclosed in Figure 4 is further provided with a tear-twist cutting line 730 on its upper surface, wherein the tear-twist cutting line 730 is connected to the lifting portion 610, and the tear line 710 and the tear-twist cutting line 730 are respectively connected to both ends of the lifting portion 610.

[0085] As shown in Figure 4, the lifting portion 610 corresponds to the area enclosed by points abcda, the lifting neck 620 corresponds to the area between points he, the hollowed-out area 630 corresponds to the area enclosed by points abcdefga, and the outer area 640 corresponds to the area surrounding the lifting portion 610, the lifting neck 620, and the hollowed-out area 630. Furthermore, the tear line 710 corresponds to the line connecting points aghi, while the hollowed-out cutting line 720 corresponds to the line connecting points abcdefga. Additionally, the tear line 710 has at least one tearing / cutting point, while the hollowed-out cutting line 720 does not have a hollowed-out cutting point.

[0086] As shown in Figure 4, the upper surface of the easy-open sealing gasket 50 is also provided with a tear-twist cutting line 730, which is equivalent to a line formed by connecting points d, j, and k. The tear line 710 is connected to one end of the lifting part 610 (i.e., point a), while the tear-twist cutting line 730 is connected to the other end of the lifting part 610 (i.e., point d), so that the tear line 710 and the tear-twist cutting line 730 are respectively set on the left and right sides of the hollow area 630. Therefore, through the configuration of the tear-off line 730, when the user pinches the lifting part 610 and lifts it along the tear line 710, and after it is torn at the end of the tear line 710 (i.e., point i), it not only provides a buffering effect due to the termination of the tear line 710, but also guides the user to further peel off the easy-open sealing gasket 50 along the tear-off line 730, thereby reminding the user to appropriately change their peeling force and direction to improve the integrity of peeling off the sealing gasket.

[0087] Furthermore, if the release layer is coated on the lower surface of the bonding film or the electromagnetic induction heating layer, the coating area of ​​the release layer is not less than the area corresponding to the lifting portion 610. Taking Figure 4 as an example, the coating area of ​​the release layer is not less than the first coating range 810 (equivalent to the area enclosed by the dashed line in Figure 4). If the release layer is coated on the upper surface of the electromagnetic induction heating layer, the coating area of ​​the release layer is not less than the area corresponding to the lifting portion 610 and the hollow area 630. Taking Figure 4 as an example, the coating area of ​​the release layer is not greater than the second coating range 820 (equivalent to the area enclosed by the dashed line in Figure 4).

[0088] Furthermore, since the components in Figure 4 are essentially the same as the easy-open sealing gasket 50 shown in Figure 3, and the functions produced by each component are also the same, they will not be described again here.

[0089] Please refer to Figure 5, which is a top view schematic diagram illustrating the easy-open sealing gasket 50 of the fourth embodiment of this disclosure. More specifically, unlike the easy-open sealing gasket 50 disclosed in Figure 2, the hollow area disclosed in Figure 5 includes multiple hollow sub-areas, and each hollow sub-area is cut by a separate hollow secondary cutting line.

[0090] As shown in Figure 5, the upper surface of the easy-open sealing gasket 50 may include a lifting part 610, a lifting neck 620, a first hollow sub-area 631, a second hollow sub-area 632, a third hollow sub-area 633, a fourth hollow sub-area 634, and an outer perimeter area 640. Specifically, taking Figure 5 as an example, the lifting part 610 corresponds to the area enclosed by points abcdefgqa, the lifting neck 620 corresponds to the area between points qh, the first hollow sub-area 631 corresponds to the area enclosed by points fghijkf, the second hollow sub-area 632 corresponds to the area enclosed by points elmde, the third hollow sub-area 633 corresponds to the area enclosed by points cnobc, the fourth hollow sub-area 634 corresponds to the area enclosed by points apqa, and the outer area 640 corresponds to the area surrounding the lifting part 610, the lifting neck 620, the first hollow sub-area 631, the second hollow sub-area 632, the third hollow sub-area 633, and the fourth hollow sub-area 634.

[0091] The first hollow sub-area 631, the second hollow sub-area 632, the third hollow sub-area 633, and the fourth hollow sub-area 634 are located on the periphery of the lifting part 610, and the first hollow sub-area 631 and the fourth hollow sub-area 634 are respectively connected to the two sides of the lifting neck 620. Taking Figure 5 as an example, one end of the first hollow sub-area 631 (i.e., point h) is connected to the right side of the lifting neck 620, while one end of the fourth hollow sub-area 634 (i.e., point q) is connected to the left side of the lifting neck 620.

[0092] Each cutout sub-area can be formed by cutting each cutout secondary cutting line. Taking Figure 5 as an example, the first cutout sub-area 631 can be formed by cutting the first cutout secondary cutting line 721, the second cutout sub-area 632 can be formed by cutting the second cutout secondary cutting line 722, the third cutout sub-area 633 can be formed by cutting the third cutout secondary cutting line 723, and the fourth cutout sub-area 634 can be formed by cutting the fourth cutout secondary cutting line 724. The first cutout secondary cutting line 721 is equivalent to the line connecting points fghijkf, the second cutout secondary cutting line 722 is equivalent to the line connecting points elmde, the third cutout secondary cutting line 723 is equivalent to the line connecting points cnobc, and the fourth cutout secondary cutting line 724 is equivalent to the line connecting points apqa. In this embodiment, since the cutout area may include multiple cutout sub-areas, and each cutout sub-area may be cut by each cutout secondary cutting line, the manufacturer can more effectively utilize the space on the upper surface of the easy-open sealing gasket 50 to make other design considerations in order to meet the manufacturer's design requirements, thereby improving the manufacturer's design flexibility and / or the aesthetics of the sealing gasket.

[0093] As shown in Figure 5, the tear line 710 is equivalent to the line formed by connecting points aqr. The tear line 710 is provided with at least one tearing and cutting point so that even if the functional layer is cut or the first hollow sub-area 631, the second hollow sub-area 632, the third hollow sub-area 633 and the fourth hollow sub-area 634 are cut off, the various blocks of the functional layer can still be connected at the tearing and cutting point, and will not fall apart.

[0094] Furthermore, the cut-out line is equivalent to a line connecting points abcdefghijklmnopqa, and the cut-out line has at least three cut-out points so that even if the functional layer is cut or the first cut-out sub-area 631, the second cut-out sub-area 632, the third cut-out sub-area 633, and the fourth cut-out sub-area 634 are cut off, the various sections of the functional layer can still be connected at the cut-out points and will not fall apart. In some specific examples, the functional layer corresponding to each cut-out point is not completely cut off in the vertical direction (for example, the upper material of the functional layer is cut off in the vertical direction, while the lower material of the functional layer is not cut off), and the functional layer corresponding to the cut-out line except at each cut-out point is completely cut off. In other specific examples, the upper surface of the functional layer corresponding to each cut-out point is not cut in the vertical direction at a distance of 0.02 to 0.9 mm along the horizontal direction of the cut-out line, and the functional layer corresponding to the cut-out line is completely cut off except at each cut-out point.

[0095] Furthermore, in this embodiment, the first perforated secondary cutting line 721, the line formed by fedcba, and the tear line 710 can be combined into a large cutting line 700. Taking Figure 5 as an example, the large cutting line 700 is equivalent to the line formed by connecting points fghijkfedcbaqr. In some specific examples, the large cutting line 700 can be formed by continuously arranging and shaping it with a single cutting blade, thus forming the large cutting line in one go (or in one cut). In this way, the large cutting line 700 can be cut out in a one-piece manufacturing method, thereby improving manufacturing convenience and making it easy to peel off and aesthetically pleasing. In addition, the second perforated secondary cutting line 722, the third perforated secondary cutting line 723, and the fourth perforated secondary cutting line 724 can also be formed by continuously arranging and shaping them with a single cutting blade.

[0096] Furthermore, if the release layer is coated on the lower surface of the bonding film or the electromagnetic induction heating layer, the coating area of ​​the release layer is not less than the area corresponding to the lifting portion 610. Taking Figure 5 as an example, the coating area of ​​the release layer is not less than the first coating range 810 (equivalent to the area enclosed by the dashed line in Figure 5). If the release layer is coated on the upper surface of the electromagnetic induction heating layer, the coating area of ​​the release layer is not less than the area corresponding to the lifting portion 610 and the hollow area 630. Taking Figure 5 as an example, the coating area of ​​the release layer is not greater than the second coating range 820 (equivalent to the area enclosed by the dashed line in Figure 5).

[0097] Furthermore, since the components in Figure 5 are substantially the same as those in the easy-open sealing gasket 50 shown in Figure 2, and the functions produced by each component are also the same, they will not be described again here. Please refer to Figure 6A, which is a cross-sectional schematic diagram illustrating a second variation of the easy-open sealing gasket 50 shown in Figure 1A. More specifically, unlike the easy-open sealing gasket 50 disclosed in Figure 1A, the one disclosed in Figure 6A further includes a foamed film 130 and a foamed sheet film 140 between the surface film 110 and the connecting film 120. In other words, the functional layer 100 disclosed in Figure 6A includes, from top to bottom, the surface film 110, the foamed film 130, the foamed sheet film 140, and the connecting film 120. In addition, in some other embodiments, a foamed film or a foamed sheet film may be included between the surface film and the connecting film; in other words, the functional layer includes the surface film, the foamed film and the connecting film in sequence from top to bottom, or the functional layer includes the surface film, the foamed sheet film and the connecting film in sequence from top to bottom.

[0098] foam film

[0099] In some embodiments, the foamed membrane 130 may be made of, for example, EPE or EPP, and the thickness of the foamed membrane 130 is preferably 60 μm to 300 μm, but is not limited thereto. Because the foamed membrane 130 has a low foaming rate and small pore size, the composite effect between the foamed membrane 130 and the surface membrane 110 is better.

[0100] foamed sheet film

[0101] In some embodiments, the foamed sheet film 140 may be made of, for example, EPE or EPP, and the thickness of the foamed sheet film 140 is preferably 0.6 mm to 3 mm, but is not limited thereto. In this way, the foamed sheet film 140 can provide a thickening effect to increase the sealing capability of the easy-open sealing gasket 50, thereby reinforcing the sealing effect when the bottle neck and cap do not match properly.

[0102] In this embodiment, the layers in the functional layer 100 can be bonded together using an adhesive 500. In some embodiments, the adhesive 500 may be, for example, a dry laminating adhesive, but is not limited thereto. As shown in FIG6A, adhesive 500 can be used to bond the surface film 110 and the foamed film 130, the foamed film 130 and the foamed board film 140, and the foamed board film 140 and the connecting film 120, respectively.

[0103] Furthermore, the other components in FIG6A are substantially the same as those in the easy-open sealing gasket 50 shown in FIG1A, and therefore will not be described again here. Additionally, the release layer 210 shown in FIG6A can be replaced by the release layer 210 shown in FIG1B, located on the upper surface of the electromagnetic induction heating layer 300 corresponding to the lifting portion, lifting neck, and hollow area. Please refer to FIG6B, which is a cross-sectional schematic diagram illustrating a third variation of the easy-open sealing gasket 50 shown in FIG1A. More specifically, unlike the easy-open sealing gasket 50 disclosed in FIG1A, the easy-open sealing gasket 50 disclosed in FIG6B further includes, between the surface film 110 and the connecting film 120: a foamed film 130, a foamed board film 140, and a composite film 150. In other words, the functional layer 100 disclosed in Figure 6B includes, from top to bottom, a surface film 110, a foamed film 130, a foamed sheet film 140, a composite film 150, and a connecting film 120. Since the foamed film 130 and the foamed sheet film 140 disclosed in Figure 6B are substantially the same as the easy-open sealing gasket 50 shown in Figure 6A, and the other components are substantially the same as the easy-open sealing gasket 50 shown in Figure 1A, they will not be described again here.

[0104] Composite membrane

[0105] In some embodiments, the composite film 150 may be made of at least one material selected from the group consisting of PI, PEN, PET, PA, PP, PE, EPE and EPP, and the thickness of the composite film 150 is preferably 12 to 3000 μm, but is not limited thereto. In this way, the composite film 150 can improve the tensile strength of the easy-open sealing gasket 50.

[0106] In this embodiment, adhesive 500 can also be used to bond the foamed sheet film 140 and the composite film 150, and the composite film 150 and the connecting film 120, respectively. Alternatively, the release layer 210 shown in FIG. 6B can be replaced by the release layer 210 shown in FIG. 1B, located on the upper surface of the electromagnetic induction heating layer 300 corresponding to the lifting portion, lifting neck, and hollow area. Please refer to FIG. 6C, which is a cross-sectional schematic diagram illustrating a fourth variation of the easy-open sealing gasket 50 shown in FIG. 1A. More specifically, unlike the easy-open sealing gasket 50 disclosed in FIG. 1A, the easy-open sealing gasket 50 disclosed in FIG. 6C further includes a foamed layer 160 between the surface film 110 and the connecting film 120. In other words, the functional layer 100 disclosed in FIG. 6C includes, from top to bottom, the surface film 110, the foamed layer 160, and the connecting film 120.

[0107] foam layer

[0108] In some embodiments, the foam layer 160 may be made of, for example, EPE or EPP, and the thickness of the foam layer 160 is preferably from 60 μm to 3000 μm, but is not limited thereto. This improves the composite effect between the foam layer 160 and the surface film 110, and creates a thickening effect to increase the sealing capability of the easy-open sealing gasket 50, thereby reinforcing the sealing effect when the bottle neck and cap do not match properly.

[0109] Furthermore, as shown in FIG6C in this embodiment, adhesive 500 can be used to laminate between the surface film 110 and the foam layer 160, and between the foam layer 160 and the connecting film 120. Additionally, the sealing layer 400 is a combination of the sealing film 410 and the adhesive 420, with the adhesive 420 located between the sealing film 410 and the electromagnetic induction heating layer 300. In some embodiments, the material of the sealing film 410 can be at least one selected from the group consisting of PE, PP, PET, PA, PVDC, and EVOH, and the thickness of the sealing film 410 is preferably 12μm to 100μm; while the adhesive 420 can be a known adhesive (e.g., dry composite adhesive), but is not limited thereto. Furthermore, the release layer 210 shown in FIG6C can also be replaced with the release layer 210 shown in FIG1B located on the upper surface of the electromagnetic induction heating layer 300 corresponding to the lifting portion, lifting neck, and hollow area.

[0110] Wireless Information Integration Chip

[0111] Next, a wireless information integration chip that can serve as the electromagnetic induction heating layer of this disclosure will be described.

[0112] First, please refer to FIG7, which is a cross-sectional schematic diagram illustrating the wireless information integration sheet 100w according to the first embodiment of the present disclosure. As shown in FIG7, the wireless information integration sheet 100w may include 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. The various structures will be described in more detail below.

[0113] 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 at least one selected from the group consisting of PI, PEN, PET, polycarbonate (PC), PP, and PE. The thickness of the base film 1w is preferably 20 to 150 μm, within which longitudinal tensile strength is greater. 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.

[0114] The first adhesive layer 2w is used to bond the base film 1w and the information to the heating layer 3w. In some specific examples, the first adhesive layer 2w only needs to be able to bond the base film 1w and the information to the heating layer 3w, and its material can be, for example, a dry composite adhesive. In addition, the thickness of the first adhesive layer 2w can be, for example, from 0.5μm to 7μm, which can make the peel strength between the two bonded materials greater than 4N / 15mm.

[0115] Taking Figure 7 as an example, the information and heating layer 3w includes an information area 31w and an electromagnetic induction heating ring 32w. The information area 31w has the function of wireless information reading and writing transmission, so as to facilitate subsequent product traceability. Among them, the information area 31w has an antenna 312w and a chip 311w that are interconnected. In addition, the electromagnetic induction heating ring 32w can be heated by electromagnetic induction through the electromagnetic field generated by the electromagnetic induction sealing machine, so that the adhesive layer of the sealing gasket is heated and melted and adhered to the container opening, thereby acting as an electromagnetic induction sealing gasket to seal the container opening. By including the wireless information integrated chip of this disclosure, most of the heat can be generated in the electromagnetic induction heating ring 32w, and very little heat is conducted only in 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. Furthermore, when applied to sealing gaskets containing batteries, the thickness of the information and heating layer 3w can be from 6μm to 2.5mm; while when applied to sealing gaskets without batteries, the thickness of the information and heating layer 3w can be from 6μm to 300μm.

[0116] Next, Figure 8A is a plan view illustrating a specific example of the information and heating layer 3w of this disclosure, and Figure 8B is a plan view illustrating another specific example of the information and heating layer 3w of this disclosure. As shown in Figure 8A or Figure 8B, the electromagnetic induction heating ring 32w surrounds the information area 31w in a planar view. Furthermore, as shown in Figure 8A, the electromagnetic induction heating ring 32w and the information area 31w are filled with a spacer ITV, meaning there are no physical connecting elements (e.g., physical connecting bridges described later) between the electromagnetic induction heating ring 32w and the information area 31w. Therefore, by filling the spacer ITV between the electromagnetic induction heating ring 32w and the information area 31w, this filled spacer ITV can block heat conduction to the information area 31w when electromagnetic induction heating occurs, which is a preferred configuration. This spacer ITV (the distance between the outermost edge of the information area 31w and the innermost edge of the electromagnetic induction heating ring 32w) can be from 0.1 mm to 3 mm. Next, as shown in Figure 8B, a gap ITV is provided at most locations 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 31w and the innermost edge of the electromagnetic induction heating ring 32w) can be 0.1mm to 3mm. In addition, there can be at least one physical connection bridge 33w (two are indicated in Figure 8B and Figure 9B described later) 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 much. 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).

[0117] In some specific examples, the electromagnetic induction heating ring 32w may be made of metal, such as aluminum, copper, gold, silver, or tin, but is not limited to these. Furthermore, from the viewpoint of the effectiveness of generating heat when subjected to a changing electromagnetic field and cost considerations, the electromagnetic induction heating ring 32w is preferably made of aluminum foil, and its thickness is preferably 6μm to 40μm.

[0118] Next, Figure 9A is a plan view illustrating a specific example of the information area of ​​this disclosure, and Figure 9B is a plan view illustrating another specific example of the information area of ​​this disclosure. Figure 9A corresponds to the embodiment in Figure 8A where the electromagnetic induction heating ring 32w and the information area 31w are filled with spaced ITVs, and Figure 9B corresponds to the embodiment in Figure 8B where most of the space between the electromagnetic induction heating ring 32w and the information area 31w has spaced ITVs. Furthermore, as shown in Figure 9A or Figure 9B, the information area 31w includes a chip 311w and an antenna 312w. Moreover, when wireless information transmission functionality is possible, the chip 311w and the antenna 312w can be arranged in the manner shown in Figure 9A or Figure 9B, or in other ways, based on the RFID frequency band desired by the user, without particular limitation.

[0119] 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.

[0120] 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.

[0121] Furthermore, although Figure 7 shows the base film 1w on top and the information and heating layer 3w 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. Additionally, the wireless information integration sheet can also be a wireless information integration sheet 100w', which, as shown in Figure 10, includes, in addition to the aforementioned base film 1w, first adhesive layer 2w, and information and heating layer 3w, a protective layer 5w and a second adhesive layer 4w. 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 it is used to bond the information and heating layer 3w and the protective layer 5w.

[0122] In some specific examples, the second adhesive layer 4w only needs to be able to bond the information to the heating layer 3w and the protective layer 5w, and its material can be, for example, a dry composite adhesive, without particular limitation. The thickness of the second adhesive layer 4w can be from 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'.

[0123] 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. The material of the protective layer 5w can be at least one selected from 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 some preferred embodiments, the thickness of the protective layer 5w can be, for example, from 12 μm to 100 μm.

[0124] 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 below and the protective layer 5w is above (with the upper surface of the protective layer 5w serving as the printing surface), the order of the base film 1w and the protective layer 5w can be reversed as needed, i.e., the case where the base film 1w is above and the protective layer 5w is below (with the lower surface of the protective layer 5w serving as the printing surface).

[0125] Method for manufacturing easy-open sealing gaskets

[0126] The method for manufacturing the easy-open sealing gasket 50 shown in Figure 1A will be further disclosed here.

[0127] 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 and the connecting film roll. The roll is then placed in a curing chamber for more than 24 hours to produce a functional layer roll.

[0128] 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.

[0129] 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 2 to 5), cutting out tear lines, perforated cutting lines (or various perforated sub-cutting lines), perforated areas (or various perforated sub-areas), and tear-twist cutting lines. The coating area of ​​the release layer is not less than the lifting portion, and the perforated areas (or various perforated sub-areas) remove the thickness of the functional layer by hollowing it out. That is, the thickness of the perforated areas (or various perforated sub-areas) is equal to the composite portion of the electromagnetic induction heating layer and the adhesive sealing layer, and less than the maximum thickness of the easy-open sealing gasket.

[0130] A strong adhesive layer is applied to the upper surface of the electromagnetic induction heating layer, for example, the strong adhesive layer is applied to the upper surface of the electromagnetic induction heating layer in a full coating manner, so that the electromagnetic induction heating layer and the lower surface of the bonding film coated with the release layer are dry-composite, and then placed in the curing chamber for more than 24 hours to produce an easy-to-remove sealing gasket roll.

[0131] Finally, the easy-open sealing gasket roll is cut downwards from the top surface of the surface film to cut out the easy-open sealing gasket of the required size.

[0132] The peel strength between the two layers of materials bonded together by the adhesive and bonding agent is greater than 4 N / 15 mm, and the peel strength between the two layers of materials bonded together by the strong adhesive layer is greater than 12 N / 15 mm. The temperature of the drying tunnel above the printing press is 60 to 80℃, and the temperatures of the five sections of the drying tunnel above the dry laminator are 60℃ to 65℃, 65℃ to 70℃, 70℃ to 75℃, 75℃ to 80℃, and 80℃ to 85℃, respectively. The temperature of the laminating roller of the dry laminator is 50℃ to 60℃. The temperature of the curing chamber is 50℃ to 55℃.

[0133] On the other hand, functional layers with varying forms can be created based on the following steps.

[0134] First, an adhesive is applied to the surface film roll, which is then dry-laminated with the foamed film roll and placed in a curing chamber for more than 24 hours to produce the first composite roll.

[0135] 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.

[0136] In addition, 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.

[0137] Finally, an adhesive is applied to the upper surface of the composite film of the third composite section roll, so that the third composite section roll and the lower surface of the foamed film of the second composite section roll are dry-laminated and placed in a curing chamber for more than 24 hours to create a functional layer with a different shape.

[0138] 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℃ to 65℃, 65℃ to 70℃, 70℃ to 75℃, 75℃ to 80℃, and 80℃ to 85℃, respectively. The temperature of the laminating rollers of the dry laminator is 50℃ to 60℃. The temperature of the curing chamber is 50℃ to 55℃.

[0139] 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.

[0140] In addition, based on the following steps, another preferred embodiment of the present disclosure, an easy-open sealing gasket, is manufactured.

[0141] First, an adhesive is applied to the underside of the surface film roll, allowing the surface film roll and the connecting film roll to be dry-laminated. The roll is then placed in a curing chamber for more than 24 hours to produce the functional layer roll.

[0142] Then, an adhesive is applied to the lower surface 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 produce the first composite roll. Alternatively, as an alternative to the sealing layer, hot melt adhesive can be directly applied to the lower surface of the electromagnetic induction heating layer roll to produce the first composite roll.

[0143] Next, a release layer is applied to the upper surface of the electromagnetic induction heating layer of the first composite roll to make the second composite roll; wherein the coating area of ​​the release layer is not less than the lifting section and the cutout area.

[0144] Then, a strong adhesive layer is applied to the lower surface of the functional layer roll material, so that the functional layer roll material and the upper surface of the second composite section roll material are dry-laminated and placed in the curing chamber for more than 24 hours to produce an easy-to-open sealing gasket blank roll material.

[0145] Next, printing is performed on the upper surface of the surface film of the first roll of easy-open sealing gasket blank to produce the second roll of printed easy-open sealing gasket blank.

[0146] Then, using a cutting die, cut downwards from the upper surface of the surface film of the two rolls of easy-open sealing gasket blank to cut out tear lines, hollow cutting lines (or various hollow sub-cutting lines), hollow areas (or various hollow sub-areas), and tear-twist cutting lines, etc.

[0147] Finally, the roll of easy-open sealing gasket is cut to the size required by the customer.

[0148] Production of wireless information integration sheet rolls

[0149] 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 easy-open sealing gasket roll.

[0150] 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 connecting wires between the chip and the antenna. At this point, the metal foil of the wireless information integrated circuit preform roll forms the information and heating layers, and the wireless information integrated circuit preform roll becomes a wireless information integrated circuit roll.

[0151] The peel strength between the two layers of materials bonded by the composite adhesive is greater than 4N / 15mm.

[0152] 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.

[0153] 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.

[0154] It should be noted that the above description is merely an illustrative example of manufacturing an easy-open sealing gasket. That is, those skilled in the art to which this disclosure pertains can adjust the order to manufacture an easy-open sealing gasket. Although the manufacture of an easy-open sealing gasket with a two-layer functional structure comprising a surface film and a connecting film is described herein, various variations of the functional layer can be used as alternatives to the aforementioned two-layer structure, and other composite methods (adhesion, bonding, or lamination, etc.) can be used as alternatives to dry lamination.

[0155] Furthermore, to make the embodiments covered by the easy-open 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 easy-open sealing gasket. Please refer to Figures 11A to 11C, which are top views illustrating other specific embodiments of the easy-open sealing gasket 50. It should be noted that subsequent descriptions will focus on variations such as the lifting portion, lifting neck, cutout area, tear line, and tear spacing. Since the remaining content is substantially the same as that illustrated in Figures 2 to 5, it will not be repeated here.

[0156] As shown in Figure 11A, the upper surface of the easy-open sealing gasket 50 may include a lifting portion 610, a lifting neck 620, a hollow area 630, and a peripheral area 640. Specifically, taking Figure 11A as an example, the lifting portion 610 corresponds to the area enclosed by points abcda, the lifting neck 620 corresponds to the area between points ke, the hollow area 630 corresponds to the area enclosed by points abcdefghijkla, and the peripheral area 640 corresponds to the area surrounding the lifting portion 610, the lifting neck 620, and the hollow area 630. The functional layer of the easy-open sealing gasket 50 is provided with a tear line 710. Taking Figure 11A as an example, the tear line 710 is equivalent to a line formed by connecting points almnop. In this state, one end of the tear line 710 (i.e., point a) is connected to the lifting part 610, while the other end of the tear line 710 (i.e., point p) is separated from the outermost ring OC of the easy-open sealing gasket 50 by a tear gap 715.

[0157] As shown in Figure 11B, the upper surface of the easy-open sealing gasket 50 may include a lifting portion 610, a lifting neck 620, a hollow area 630, and a peripheral area 640. Specifically, taking Figure 11B as an example, the lifting portion 610 corresponds to the area enclosed by points abcda, the lifting neck 620 corresponds to the area between points ie, the hollow area 630 corresponds to the area enclosed by points abcdefghija, and the peripheral area 640 corresponds to the area surrounding the lifting portion 610, the lifting neck 620, and the hollow area 630. The functional layer of the easy-open sealing gasket 50 is provided with a tear line 710. Taking Figure 11B as an example, the tear line 710 is equivalent to a line formed by connecting points ajklm. In this case, one end of the tear line 710 (i.e., point a) is connected to the lifting part 610, and the other end of the tear line 710 (i.e., point m) is separated from the outermost ring OC of the easy-open sealing gasket 50 by a tear gap 715.

[0158] As shown in Figure 11C, the upper surface of the easy-open sealing gasket 50 may include a lifting portion 610, a lifting neck 620, a cutout area 630, and a peripheral area 640. Specifically, taking Figure 11C as an example, the lifting portion 610 corresponds to the area enclosed by points abcda, the lifting neck 620 corresponds to the area between points ie, the cutout area 630 corresponds to the area enclosed by points abcdefghija, and the peripheral area 640 corresponds to the area surrounding the lifting portion 610, the lifting neck 620, and the cutout area 630. The functional layer of the easy-open sealing gasket 50 is provided with a tear line 710. Taking Figure 11C as an example, the tear line 710 corresponds to the line connected by points ajkl. In this case, one end of the tear line 710 (i.e., point a) is connected to the lifting portion 610, and the other end of the tear line 710 (i.e., point l) is separated from the outermost ring OC of the easy-open sealing gasket 50 by a tear gap 715. Additionally, the upper surface of the easy-open sealing gasket 50 is provided with a tear-off line 730. Taking Figure 11C as an example, the tear-off line 730 is equivalent to a line formed by connecting points dmnop. This disclosure is not limited to the various embodiments described above. Those skilled in the art to which this disclosure pertains can make various additions, subtractions, substitutions, and / or modifications within the scope disclosed in the patent disclosure. Furthermore, embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included within the technical scope of this disclosure.

[0159]

Explanation of Markings in the Drawings

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