Pull petal type sealing gasket

Abstract

The utility model discloses a petal-pulling type sealing gasket which comprises an upper layer, a connecting layer and an adhesive sealing composite layer which are sequentially compounded from top to bottom, the upper layer comprises a surface film; the adhesive sealing composite layer comprises an electromagnetic induction heating layer and an adhesive sealing layer which are sequentially compounded from top to bottom; the connecting layer comprises a connecting adhesive and a petal pulling layer; the connecting layer is used for compounding the upper layer and the adhesive sealing composite layer through a connecting adhesive, and an unbonded area is formed between the upper layer and the adhesive sealing composite layer; the flap pulling layer is arranged in the non-bonding area, and the flap pulling layer is compounded with the upper layer through a composite adhesive and / or the flap pulling layer is compounded with the bonding and sealing composite layer through an adhesive. The bottle cap has the advantage of being easy to open.

Description

Technical Field

[0001] This utility model relates to the field of sealing gaskets, and in particular to a flap-type sealing gasket. Background Technology

[0002] To prevent the contents of packaging containers (such as beverage cans and medicine cans) from leaking out and deteriorating due to external environmental influences, sealing gaskets are used to seal the opening of the packaging containers. By using sealing gaskets to tightly seal the opening of the containers, the contents can be prevented from leaking out and can be sealed and preserved.

[0003] However, conventional sealing gaskets are designed primarily for sealing performance, without considering ease of tearing. In this case, the aluminum foil or cardboard sealing gaskets used to close the container opening are not easy to open with fingers, and cutting with a knife or poking with an awl is both troublesome and dangerous, causing inconvenience to users.

[0004] In view of the above problems, it is necessary to study a flap-type sealing gasket, which has the advantage of being easy to open. Utility Model Content

[0005] The purpose of this invention is to provide a pull-flap type sealing gasket, which has the advantage of being easy to open.

[0006] To achieve the above objectives, the solution of this utility model is:

[0007] A flap-type sealing gasket includes an upper layer, a connecting layer, and an adhesive composite layer sequentially laminated from top to bottom; the upper layer includes a surface film; the adhesive composite layer includes an electromagnetic induction heating layer and an adhesive layer sequentially laminated from top to bottom; the connecting layer includes a connecting adhesive and a flap layer; the connecting layer laminates the upper layer and the adhesive composite layer through the connecting adhesive, and forms an unbonded area between the upper layer and the adhesive composite layer; the flap layer is disposed in the unbonded area, and the flap layer is laminated with the upper layer through a composite adhesive and / or the flap layer is laminated with the adhesive composite layer through an adhesive.

[0008] The flap layer is bonded to the upper layer by a composite adhesive, forming a gap area between the flap layer and the adhesive-sealing composite layer. The bonding adhesive makes the peel strength between the upper layer and the adhesive-sealing composite layer greater than or equal to 17.8 N / 15 mm. The flap layer adopts a single-piece flap film, which includes at least one of paper, PET film, PP film, PA film, PEN film and PI film.

[0009] The flap layer is bonded to the sealing composite layer by an adhesive, and a gap area is formed between the flap layer and the upper layer. The bonding adhesive makes the peel strength between the upper layer and the sealing composite layer greater than or equal to 17.8 N / 15 mm. The flap layer adopts a single flap film, which includes at least one of paper, PET film, PP film, PA film, PEN film and PI film.

[0010] The valve layer adopts a folded valve membrane, which includes a first upper folded valve membrane and a first lower folded valve membrane. The first upper folded valve membrane is bonded to the upper layer by a composite adhesive, and the first lower folded valve membrane is bonded to the sealing composite layer by an adhesive. A gap area is formed between the first upper folded valve membrane and the first lower folded valve membrane. Both the first upper folded valve membrane and the first lower folded valve membrane include at least one of PA film, PP film, PET film, PEN film and PI film. The cross-sectional width of the first upper folded valve membrane is less than or equal to the cross-sectional width of the first lower folded valve membrane.

[0011] The flap layer is bonded to the upper layer via a composite adhesive, forming a gap region between the flap layer and the adhesive-sealed composite layer. The bonding adhesive ensures that the peel strength between the upper layer and the adhesive-sealed composite layer is greater than or equal to 17.8 N / 15 mm. The flap layer adopts a spliced ​​flap film, which includes a first flap film and a second flap film, with a gap region formed between the first flap film and the second flap film. The first flap film includes at least one of PP film, PET film, PA film, PEN film, and PI film, and the second flap film includes at least one of paper, PP film, PET film, PA film, PEN film, and PI film.

[0012] The flap layer adopts a folded spliced ​​flap film, which includes a second upper folded flap film and a second lower folded flap film. The second upper folded flap film is laminated to the upper layer by a composite adhesive, and the second lower folded flap film is laminated to the sealing composite layer by an adhesive. A gap area is formed between the second upper folded flap film and the second lower folded flap film. The second upper folded flap film includes a first flap film and a second flap film, with a gap area formed between them. Both the first flap film and the second lower folded flap film of the second upper folded flap film include at least one of PA film, PP film, PET film, PEN film, and PI film. The second flap film of the second upper folded flap film includes at least one of paper, PA film, PP film, PET film, PEN film, and PI film.

[0013] The cross-sectional width of the flap layer is greater than or equal to one-sixth of the cross-sectional width of the flap-type sealing gasket, and the cross-sectional width of the flap layer is less than or equal to five-sixths of the cross-sectional width of the flap-type sealing gasket.

[0014] The adhesive-sealing composite layer also includes a bonding membrane; the bonding membrane is disposed on the top layer of the adhesive-sealing composite layer, and the bonding membrane includes at least one of PE film, PP film, PA film, EPP film and EPE film.

[0015] The upper layer further includes a first connecting film, which is disposed at the bottom of the upper layer; the first connecting film includes at least one of PE film, PP film, PA film, EMMA film and EMAC film; the adhesive composite layer further includes a second connecting film, which is disposed at the top of the adhesive composite layer; the second connecting film includes at least one of PE film, PP film, PA film, EPP film and EPE film.

[0016] The sealing composite layer also includes a composite film, which is disposed above the electromagnetic induction heating layer. The composite film includes at least one of PP film, PE film, PEN film, PET film and PA film.

[0017] The bonding adhesive, adhesive, and composite adhesive are dry composite adhesives or hot melt laminates, and the hot melt laminate is made of one of PE, PP, EMAA, EAA, EEA, EMAC, and EMMA.

[0018] The surface film includes at least one of PEN film, PI film, PET film, PE film, PP film and PA film.

[0019] The sealing layer is a hot melt adhesive, which is made of one of the following materials: EVA, PIB, EBA, EAA, EMAA, EMAC, polyacrylate and acrylic copolymer.

[0020] The sealing layer includes a sealing film and an adhesive. The sealing film includes at least one of PE film, PP film, PA film, PVDC film, EVOH film and PET film. The adhesive is located between the sealing film and the electromagnetic induction heating layer.

[0021] The electromagnetic induction heating layer is made of aluminum foil.

[0022] The electromagnetic induction heating layer uses a wireless information integrated chip; the wireless information integrated chip includes a base film, an information and heating layer and a first adhesive layer; the information and heating layer includes an information area and an electromagnetic induction heating ring; the information area has an antenna and a chip that are mutually connected, the electromagnetic induction heating ring surrounds the information area, and the first adhesive layer is located between the base film and the information and heating layer.

[0023] The wireless information integrated sheet also 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.

[0024] There is a gap between the electromagnetic induction heating ring and the information area.

[0025] The distance between the electromagnetic induction heating ring and the information area is 0.1mm to 3mm.

[0026] The electromagnetic induction heating ring and the information area are filled with gaps.

[0027] The information and heating layer also includes at least one physical connection bridge that connects the information area to the electromagnetic induction heating ring.

[0028] After adopting the above solution, the pull-flap sealing gasket of this utility model has a pull-flap layer. The pull-flap layer creates an unbonded area between the upper layer and the adhesive sealing composite layer. In this way, the user can easily peel off the pull-flap layer of the pull-flap sealing gasket of this utility model, and easily tear off the pull-flap sealing gasket of this utility model by applying force through the pull-flap layer and the upper layer corresponding to the pull-flap layer, thus having the advantage of being easy to open. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the flap-type sealing gasket of Embodiment 1 of this utility model.

[0030] Figure 2 This is a schematic diagram illustrating the use of the flap-type sealing gasket in Embodiment 1 of this utility model.

[0031] Figure 3 This is a schematic diagram of the structure of the flap-type sealing gasket of Embodiment 2 of this utility model.

[0032] Figure 4 This is a schematic diagram of the structure of the flap-type sealing gasket of Embodiment 3 of this utility model.

[0033] Figure 5 This is a schematic diagram of the structure of the flap-type sealing gasket of Embodiment 4 of this utility model.

[0034] Figure 6 This is a schematic diagram illustrating the use of the flap-type sealing gasket in Embodiment 4 of this utility model.

[0035] Figure 7 This is a schematic diagram of the structure of the flap-type sealing gasket of Embodiment 5 of this utility model.

[0036] Figure 8 This is a schematic diagram illustrating the use of the flap-type sealing gasket in Embodiment 5 of this utility model.

[0037] Figure 9 This is a schematic diagram of the structure of the flap-type sealing gasket of Embodiment Six of this utility model.

[0038] Figure 10 This is a schematic diagram illustrating the use of the flap-type sealing gasket in Embodiment Six of this utility model.

[0039] Figure 11 This is a schematic diagram of the structure of the flap-type sealing gasket of Embodiment Seven of this utility model.

[0040] Figure 12This is a schematic diagram of the structure of the flap-type sealing gasket of Embodiment 8 of this utility model.

[0041] Figure 13 This is a schematic diagram of the structure of the flap-type sealing gasket of Embodiment 9 of this utility model.

[0042] Figure 14 This is a cross-sectional schematic diagram of the first embodiment of the wireless information integration chip of this utility model.

[0043] Figure 15 This is a planar schematic diagram of the information and heating layer of the first embodiment of the wireless information integration chip of this utility model.

[0044] Figure 16 This is a plan view of the information area of ​​the first embodiment of the wireless information integration chip of this utility model.

[0045] Figure 17 This is a cross-sectional schematic diagram of the second embodiment of the wireless information integration chip of this utility model.

[0046] Figure 18 This is a planar schematic diagram of the information and heating layer of the third embodiment of the wireless information integration chip of this utility model.

[0047] Figure 19 This is a plan view of the information area of ​​the third embodiment of the wireless information integration chip of this utility model.

[0048] Label Explanation:

[0049] Upper layer 100, surface film 110, first connecting film 120,

[0050] Connecting layer 200, connecting adhesive 210, composite adhesive 220, single-piece pull valve 230, bi-fold pull valve 231, first upper fold pull valve 231A, first lower fold pull valve 231B, spliced ​​pull valve 232, first pull valve 232A, second pull valve 232B, bi-fold spliced ​​pull valve 233, second upper fold pull valve 233A, second lower fold pull valve 233B, adhesive 240, sealing composite layer 300, electromagnetic induction heating layer 310.

[0051] Adhesive layer 320, adhesive film 321, adhesive 322, bonding film 330, protective film 340, second bonding film 350, thickening layer 360, composite film 370.

[0052] Adhesive a,

[0053] Gap region GA,

[0054] Void region SA,

[0055] Base film 1W, first adhesive layer 2W, information and heating layer 3W, information area 31W, chip 311W, antenna 312W, electromagnetic induction heating ring 32W, physical connection bridge 33W, second adhesive layer 4W, protective layer 5W, spacer ITV. Detailed Implementation

[0056] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0057] Example 1:

[0058] Cooperate Figure 1 and Figure 2 As shown, in Embodiment 1 of this utility model, the flap-type sealing gasket of this utility model includes an upper layer 100, a connecting layer 200, and an adhesive composite layer 300 sequentially laminated from top to bottom. The upper layer 100 includes a surface film 110, the connecting layer 200 includes a connecting adhesive 210 and a flap layer, and the adhesive composite layer 300 includes an electromagnetic induction heating layer 310 and an adhesive layer 320 sequentially laminated from top to bottom.

[0059] In Embodiment 1 of this utility model, the upper layer 100 is disposed on the topmost layer of the flap-type sealing gasket of this utility model. (Cooperation) Figure 1 As shown, the upper layer 100 includes a surface film 110, which serves as the uppermost layer (i.e., surface layer) of the flap-type sealing gasket of this invention. The upper and / or lower surfaces of the surface film 110 can be printed surfaces, which can be used to print different patterns. The surface film 110 may include at least one of PEN film, PI film, PET film, PE film, PP film, and PA film. The thickness of the surface film 110 is preferably 12 to 150 µm. Within this range, the tensile strength is high, the surface is smooth, and the gloss is good. In addition, when the flap-type sealing gasket of this invention is subjected to heat conduction, the surface film 110 can be prevented from sticking to other external components (such as bottle caps).

[0060] In Embodiment 1 of this utility model, the connecting layer 200 is disposed between the upper layer 100 and the adhesive composite layer 300. Figure 1 As shown, the bonding layer 200 includes a bonding adhesive 210 and a flap layer. The bonding layer 200 bonds the upper layer 100 to the adhesive-bonded composite layer 300 via the bonding adhesive 210, and forms an unbonded area between the upper layer 100 and the adhesive-bonded composite layer 300. The bonding adhesive 210 enables a peel strength between the upper layer 100 and the adhesive-bonded composite layer 300 greater than or equal to 17.8 N / 15 mm, thereby ensuring a stable bond. The bonding adhesive 210 can be a hot-melt laminating adhesive or a dry laminating adhesive, but is not limited to these.

[0061] In Embodiment 1 of this utility model, the flap layer is disposed in the aforementioned unbonded area, and the flap layer is bonded to the upper layer 100 by a composite adhesive 220. The composite adhesive 220 enables a peel strength between the upper layer 100 and the flap layer to be greater than or equal to 2N / 15mm, thereby ensuring a stable bond. The composite adhesive 220 can be a hot-melt laminate or a dry-bonded adhesive, but is not limited to these. A gap region SA is formed between the flap layer and the adhesive composite layer 300 to ensure that the flap layer and the adhesive composite layer 300 are separated from each other (i.e., not bonded to each other), allowing the user to easily peel off the flap-type sealing gasket of this utility model by hand without the aid of external objects.

[0062] In Embodiment 1 of this utility model, in conjunction with Figure 1 As shown, the flap layer can be a single-piece flap diaphragm 230, which includes, but is not limited to, at least one of paper, PET film, PP film, PA film, PEN film, and PI film. The thickness of the single-piece flap diaphragm 230 is preferably 12 to 50 µm.

[0063] In Embodiment 1 of this utility model, the adhesive-sealing composite layer 300 is disposed at the bottom layer of the flap-type sealing gasket of this utility model. Figure 1 As shown, the sealing composite layer 300 includes an electromagnetic induction heating layer 310 and an adhesive layer 320 sequentially laminated from top to bottom. The electromagnetic induction heating layer 310 can be made of aluminum foil, a structure already present in conventional sealing gaskets. The thickness of the aluminum foil is preferably 10 to 40 µm, thereby enhancing the barrier function against moisture and oxygen, preventing leakage of contents and effectively sealing and preserving the contents. Alternatively, the electromagnetic induction heating layer 310 can be replaced by a wireless information integration sheet. This wireless information integration sheet increases wireless information transmission capabilities, reduces aluminum foil waste, lowers energy consumption, avoids manpower waste, avoids interference from metals and liquids, improves production efficiency, provides excellent communication performance and significantly increases communication distance, greatly enhancing the automation, digitalization, and intelligent development of factories, warehouses, logistics, shops, and unmanned checkout management. The thickness of the wireless information integration sheet is preferably 27 µm to 2.5 mm.

[0064] In Embodiment 1 of this utility model, the sealing layer 320 is used to seal the container opening. The sealing layer 320 can be a hot melt adhesive, and the material of the hot melt adhesive can be one of EVA, PIB, EBA, EAA, EMAC, polyacrylate, acrylic copolymer, and EMAA, but is not limited to these. The thickness of the hot melt adhesive is preferably 4 to 100 µm. The hot melt adhesive can achieve a continuous sealing effect even when the contents of the packaging container contain water, and can also achieve a continuous sealing effect when the contents of the packaging container contain chili peppers, garlic, fermented bean curd, honey, or spicy additives.

[0065] Example 2:

[0066] Cooperate Figure 3 As shown, the difference between Embodiment 2 and Embodiment 1 lies in the position of the flap layer.

[0067] In the second embodiment of this utility model, the flap layer is disposed in the aforementioned unbonded area, and the flap layer is bonded to the sealing composite layer 300 by an adhesive 240. The adhesive 240 enables a peel strength between the sealing composite layer 300 and the flap layer to be greater than or equal to 2N / 15mm, thereby ensuring a stable bond. The adhesive 240 can be a hot melt adhesive or a dry composite adhesive, but is not limited to these. A gap area SA is formed between the flap layer and the upper layer 100 to ensure that the flap layer and the upper layer 100 are separated from each other (i.e., not bonded to each other), allowing the user to easily peel off the flap-type sealing gasket of this utility model by hand without the aid of external objects.

[0068] In Embodiment 2 of this utility model, the flap layer can be a single-piece flap membrane 230, which includes at least one of paper, PET film, PP film, PA film, PEN film, and PI film, but is not limited thereto. The thickness of the single-piece flap membrane 230 is preferably 12 to 50 µm.

[0069] Example 3:

[0070] Cooperate Figure 4 As shown, the difference between Embodiment 3 and Embodiment 1 of this utility model lies in the structure of the connecting layer 200.

[0071] Specifically, in Embodiment 3 of this utility model, the connecting layer 200 includes a connecting adhesive 210 and a flap layer. The connecting layer 200 bonds the upper layer 100 to the adhesive-sealing composite layer 300 via the connecting adhesive 210, forming an unbonded area between the upper layer 100 and the adhesive-sealing composite layer 300. The flap layer is disposed in the aforementioned unbonded area and is bonded to the upper layer 100 via a composite adhesive 220. This composite adhesive 220 and the connecting adhesive 210 are the same adhesive, resulting in a peel strength between the upper layer 100 and the flap layer and the adhesive-sealing composite layer 300 greater than or equal to 17.8 N / 15 mm, thereby ensuring a stable bond. It should be noted that since the composite adhesive 220 and the connecting adhesive 210 use the same adhesive, they can be applied simultaneously as the same adhesive.

[0072] In Embodiment 3 of this invention, the bonding adhesive 210 and the composite adhesive 220 are hot-melt laminates, and the material of the hot-melt laminate is one of PE, PP, EMAA, EAA, EEA, EMAC, and EMMA. The thickness of the hot-melt laminate is preferably 4 to 60 µm. The hot-melt laminate can be a coating adhesive used during coating, but is not limited to this.

[0073] In the third embodiment of this utility model, a gap region SA is formed between the flap layer and the adhesive composite layer 300 to ensure that the flap layer and the adhesive composite layer 300 are separated from each other. The flap layer can be a single flap membrane 230, but is not limited thereto.

[0074] Example 4:

[0075] Cooperate Figure 5 and Figure 6 As shown, the difference between Embodiment 4 and Embodiment 1 lies in the structure of the connecting layer 200.

[0076] Specifically, in Embodiment 4 of this utility model, the connecting layer 200 includes a connecting adhesive 210 and a flap layer. The connecting layer 200 combines the upper layer 100 with the adhesive-sealed composite layer 300 through the connecting adhesive 210, and forms an unbonded area between the upper layer 100 and the adhesive-sealed composite layer 300. The connecting adhesive 210 can be a dry composite adhesive or a hot melt composite adhesive, but is not limited to these. The connecting adhesive 210 makes the peel strength between the upper layer 100 and the adhesive-sealed composite layer 300 greater than or equal to 4N / 15mm. The flap layer is disposed in the aforementioned unbonded area, and the flap layer is bonded to the upper layer 100 by a composite adhesive 220. The composite adhesive 220 can be a dry composite adhesive or a hot melt composite adhesive, but is not limited thereto. The composite adhesive 220 can make the peel strength between the upper layer 100 and the flap layer greater than or equal to 2N / 15mm. The flap layer is also bonded to the sealing composite layer 300 by an adhesive 240. The adhesive 240 can make the peel strength between the sealing composite layer 300 and the flap layer greater than or equal to 2N / 15mm. The adhesive 240 can be a dry composite adhesive or a hot melt composite adhesive, but is not limited thereto.

[0077] In Embodiment 4 of this utility model, the valve layer adopts a folded valve membrane 231. The folded valve membrane 231 may include a first upper folded valve membrane 231A and a first lower folded valve membrane 231B, and a gap region SA is formed between the first upper folded valve membrane 231A and the first lower folded valve membrane 231B. The first upper folded valve membrane 231A and the first lower folded valve membrane 231B may each include at least one of PA film, PP film, PET film, PEN film and PI film, but are not limited thereto; the thickness of the first upper folded valve membrane 231A and the first lower folded valve membrane 231B may both be 12 to 24 µm.

[0078] In Embodiment 4 of this utility model, the first upper folded pull valve 231A of the folded pull valve 231 is bonded to the surface film 110 in the upper layer 100 via a composite adhesive 220. The composite adhesive 220 ensures that the peel strength between the upper layer 100 and the first upper folded pull valve 231A is greater than or equal to 2N / 15mm. The first lower folded pull valve 231B of the folded pull valve 231 is bonded to the electromagnetic induction heating layer 310 in the adhesive-sealed composite layer 300 via an adhesive adhesive 240. The adhesive adhesive 240 ensures that the peel strength between the adhesive-sealed composite layer 300 and the first lower folded pull valve 231B is greater than or equal to 2N / 15mm.

[0079] In conventional sealing gaskets, the required peel strength between the flap layer and the underlying layer in certain situations makes it difficult to bond the flap layer and the underlying layer together. However, the flap-type sealing gasket of this invention forms a gap region SA between the first upper fold flap film 231A and the first lower fold flap film 231B of the folded flap film 231. This ensures that the first upper fold flap film 231A and the first lower fold flap film 231B are separated from each other (i.e., not bonded together), allowing the user to easily peel off the flap-type sealing gasket of this invention by hand without the aid of external objects.

[0080] In Embodiment 4 of this utility model, the cross-sectional width W3 of the first upper folding valve 231A can be less than or equal to the cross-sectional width W4 of the first lower folding valve 231B. When the cross-sectional width W3 of the first upper folding valve 231A is less than the cross-sectional width W4 of the first lower folding valve 231B, a small space will appear at the outermost edge of the first upper folding valve 231A, and air will be present in this space. In this case, even if the adhesive composite layer 300 is very thin, the user can easily open the valve by hand, so that the user can easily peel off the pull-valve sealing gasket of this utility model by hand without the aid of external objects.

[0081] Example 5:

[0082] Cooperate Figure 7 and Figure 8 As shown, the difference between Embodiment 5 and Embodiment 1 lies in the structure of the connecting layer 200.

[0083] Specifically, in Embodiment 5 of this utility model, the connecting layer 200 includes a connecting adhesive 210 and a flap layer. The connecting layer 200 bonds the upper layer 100 to the adhesive-sealed composite layer 300 through the connecting adhesive 210, forming an unbonded area between the upper layer 100 and the adhesive-sealed composite layer 300. The connecting adhesive 210 can be a dry-applied adhesive or a hot-melt adhesive, but is not limited to these. The connecting adhesive 210 ensures that the peel strength between the upper layer 100 and the adhesive-sealed composite layer 300 is greater than or equal to 17.8 N / 15 mm. The flap layer is disposed in the aforementioned unbonded area, and the flap layer is bonded to the upper layer 100 through a composite adhesive 220. The composite adhesive 220 can be a dry-applied adhesive or a hot-melt adhesive, but is not limited to these. The composite adhesive 220 ensures that the peel strength between the upper layer 100 and the flap layer is greater than or equal to 2 N / 15 mm.

[0084] In the fifth embodiment of this utility model, a gap region SA is also formed between the flap layer and the adhesive composite layer 300, so as to ensure that the flap layer and the adhesive composite layer 300 are separated from each other (i.e., not composite with each other), so that the user can easily peel off the flap-type sealing gasket of this utility model by hand without the aid of external objects.

[0085] In Embodiment 5 of this utility model, the flap layer employs a spliced ​​flap membrane 232; the thickness of the spliced ​​flap membrane 232 is preferably 12 to 50 µm; the spliced ​​flap membrane 232 may include a first flap membrane 232A and a second flap membrane 232B, and a gap region GA is formed between the first flap membrane 232A and the second flap membrane 232B. The first flap membrane 232A may include at least one of PP film, PET film, PA film, PEN film, and PI film, and the second flap membrane 232B may include at least one of paper, PP film, PET film, PA film, PEN film, and PI film. The space reserved at the splice joint of the spliced ​​flap membrane 232 (i.e., the gap region GA) can expand and retain some space during the interaction of thermal expansion and edge compression during electromagnetic induction sealing, allowing the user to open the flap layer more easily.

[0086] Example 6:

[0087] Cooperate Figure 9 and Figure 10 As shown, the difference between Embodiment Six and Embodiment One lies in the structure of the connecting layer 200.

[0088] Specifically, in Embodiment Six of this utility model, the connecting layer 200 includes a connecting adhesive 210 and a flap layer. The connecting layer 200 combines the upper layer 100 with the adhesive-sealed composite layer 300 through the connecting adhesive 210, and forms an unbonded area between the upper layer 100 and the adhesive-sealed composite layer 300. The connecting adhesive 210 can be a dry composite adhesive or a hot melt composite adhesive, but is not limited to these. The connecting adhesive 210 can make the peel strength between the upper layer 100 and the adhesive-sealed composite layer 300 greater than or equal to 4N / 15mm. The flap layer is disposed in the aforementioned unbonded area, and the flap layer is bonded to the upper layer 100 by a composite adhesive 220. The composite adhesive 220 can be a dry composite adhesive or a hot melt composite adhesive, but is not limited thereto. The composite adhesive 220 can make the peel strength between the upper layer 100 and the flap layer greater than or equal to 2N / 15mm. The flap layer is also bonded to the sealing composite layer 300 by an adhesive 240. The adhesive 240 can make the peel strength between the sealing composite layer 300 and the flap layer greater than or equal to 2N / 15mm. The adhesive 240 can be a dry composite adhesive or a hot melt composite adhesive, but is not limited thereto.

[0089] In Embodiment Six of this utility model, the valve layer adopts a folded spliced ​​valve membrane 233. The folded spliced ​​valve membrane 233 may include a second upper folded valve membrane 233A and a second lower folded valve membrane 233B, with a gap region SA formed between the second upper folded valve membrane 233A and the second lower folded valve membrane 233B. The second upper folded valve membrane 233A may include a first valve membrane 232A and a second valve membrane 232B, with a gap region GA formed between the first valve membrane 232A and the second valve membrane 232B. The first valve membrane 232A and the second lower folded valve membrane 233B of the second upper folded valve membrane 233A may each include at least one of PA film, PP film, PET film, PEN film, and PI film, but are not limited thereto. The thickness of the first valve membrane 232A and the second lower folded valve membrane 233B of the second upper folded valve membrane 233A may both be 12 to 24 µm. The second pull valve 232B of the second upper folding pull valve 233A may include at least one of paper, PA film, PP film, PET film, PEN film and PI film, and the thickness of the second pull valve 232B of the second upper folding pull valve 233A is preferably 12 to 50 µm.

[0090] In Embodiment Six of this utility model, the pull-flap sealing gasket of this utility model forms a gap region SA between the second upper pull-flap film 233A and the second lower pull-flap film 233B, thereby ensuring that the second upper pull-flap film 233A and the second lower pull-flap film 233B are separated from each other (i.e., not combined), so that the user can easily open the pull-flap sealing gasket of this utility model by hand without the aid of external objects. In addition, when subjected to the interaction of thermal expansion and cap edge compression during electromagnetic induction sealing, the gap region GA formed between the first pull-flap film 232A and the second pull-flap film 232B can retain some space, so that the user can open the pull-flap layer more easily. In addition, the first flap 232A and the second flap 232B of the folded spliced ​​flap 233 can be made of films with low elongation at break and high tensile strength (materials are PA, PP, PET, PEN or PI), so that the high tensile strength of the film can greatly compensate for the lack of peel strength between the flap layer and the underlying layer.

[0091] In Embodiment Six of this utility model, the second upper folded flap 233A of the folded spliced ​​flap 233 is bonded to the surface film 110 in the upper layer 100 via a composite adhesive 220. The composite adhesive 220 ensures that the peel strength between the upper layer 100 and the flap layer is greater than or equal to 2N / 15mm. The second lower folded flap 233B of the folded spliced ​​flap 233 in the flap layer is bonded to the electromagnetic induction heating layer 310 in the adhesive-sealed composite layer 300 via an adhesive 240. The adhesive 240 ensures that the peel strength between the adhesive-sealed composite layer 300 and the flap layer is greater than or equal to 2N / 15mm.

[0092] Example 7:

[0093] Cooperate Figure 11 As shown, the difference between Embodiment 7 and Embodiment 6 of this utility model lies in the adhesive composite layer 300.

[0094] Specifically, in Embodiment Seven of this utility model, the adhesive-sealing composite layer 300 includes an electromagnetic induction heating layer 310 and an adhesive layer 320 sequentially laminated from top to bottom; the adhesive layer 320 of the adhesive-sealing composite layer 300 includes an adhesive film 321 and an adhesive 322, with the adhesive 322 located between the adhesive film 321 and the electromagnetic induction heating layer 310. The adhesive film 321 may include at least one of PE film, PP film, PA film, PVDC film, EVOH film, and PET film, and the thickness of the adhesive film 321 is preferably 12 to 100 µm; while the adhesive 322 may be a conventional adhesive (such as a dry composite adhesive, etc.), but is not limited thereto.

[0095] In Embodiment Seven of this utility model, the adhesive-sealed composite layer 300 further includes a connecting film 330 and a protective film 340. The connecting film 330 is disposed on the uppermost layer of the adhesive-sealed composite layer 300 and is used to composite with the surface film 110 of the upper layer 100 and the folded spliced ​​flap 233. More specifically, the connecting film 330 is composited with the surface film 110 of the upper layer 100 through a connecting adhesive 210, and is composited with the second lower folded flap 233B of the folded spliced ​​flap 233 of the flap layer through an adhesive 240. The connecting film 330 may include at least one of PE film, PP film, PA film, EPP film and EPE film. The thickness of the connecting film 330 is preferably 12 to 200 µm, thereby improving the peel strength after the connecting film 330 is composited with the upper layer 100 and / or the folded spliced ​​flap 233. A protective film 340 is disposed between the connecting film 330 and the electromagnetic induction heating layer 310; the protective film 340 may include at least one of PET film, PA film and PP film; the thickness of the protective film 340 is preferably 12 to 30 µm; thereby, when the protective film 340 is sequentially laminated with the connecting film 330, the wireless information integrated chip containing the antenna and chip and the sealing layer 320, damage to the chip in the wireless information integrated chip can be avoided.

[0096] In Embodiment Seven of this utility model, adhesive a can be used to bond the connecting film 330 and the protective film 340, and the protective film 340 and the electromagnetic induction heating layer 310. Adhesive a can be a conventional adhesive, such as a dry laminating adhesive. Adhesive a can make the peel strength between the two bonded layers (e.g., the connecting film 330 and the protective film 340) greater than or equal to 4 N / 15 mm.

[0097] The manufacturing method of the flap-type sealing gasket in Embodiment 7 of this utility model is as follows:

[0098] First, an adhesive is applied to the upper surface of the protective film roll, and the upper surface of the protective film roll is dry-laminated with the lower surface of the connecting film roll. The roll is then placed in a curing chamber for more than 24 hours to produce the first composite roll.

[0099] Secondly, an adhesive is applied to the protective film surface of the first composite section roll, so that the protective film surface of the first composite section roll is dry-laminated with the upper surface of the electromagnetic induction heating layer roll, and then placed in the curing chamber for more than 24 hours to produce the second composite section roll.

[0100] Then, an adhesive is applied to the electromagnetic induction heating layer of the second composite roll, and the electromagnetic induction heating layer of the second composite roll is dry-laminated with the upper surface of the sealing film roll. After curing in a curing chamber for more than 24 hours, the lower composite roll is produced. Alternatively, hot melt adhesive is applied to the electromagnetic induction heating layer of the second composite roll to produce the lower composite roll (i.e., the sealing composite layer roll).

[0101] Next, the roll of flap film to be spliced ​​is folded and pressed into a dead fold (a dead fold means that the flap film to be spliced ​​is pressed into a fold that is not easy to disappear by using a roller or plate with added pressure, or by using a heating method to make the heating temperature close to or slightly exceed the Vicat softening point of the flap film to be spliced, so that a fold that is not easy to disappear due to the effect of heat), and a dead fold flap film roll to be spliced ​​is made.

[0102] Next, an adhesive is applied to the lower surface of the dead-folded flap film roll to be spliced, so that the connecting film surface of the dead-folded flap film roll to be spliced ​​and the lower composite roll is dry-laminated, and then placed in a curing chamber for more than 24 hours to produce the structural layer roll.

[0103] Next, a medium-strength adhesive is applied to the lower surface of the surface film roll, so that the upper surface of the structural layer roll, the upper surface of the second flap film roll to be spliced, and the lower surface of the surface film roll are dry-laminated together. The roll is then placed in a curing chamber for more than 24 hours to produce a flap-type sealing gasket roll.

[0104] Finally, cut the flap-type sealing gasket to the appropriate size according to the user's needs;

[0105] Example 8:

[0106] Cooperate Figure 12 As shown, the main difference between Embodiment 8 and Embodiment 7 of this utility model is that Embodiment 8 uses a composite film 370 instead of the protective film 340 of Embodiment 7; at the same time, the flap layer of Embodiment 8 adopts a spliced ​​flap film 232.

[0107] In Embodiment 8 of this invention, the composite film 370 is disposed above the electromagnetic induction heating layer 310. More specifically, the composite film 370 is disposed between the connecting film 330 and the electromagnetic induction heating layer 310. The composite film 370 is used to improve the tensile strength of the flap-type sealing gasket of this invention. In some embodiments, the composite film 370 may include at least one of PP film, PET film, and PA film, and the thickness of the composite film 370 is preferably 12 to 100 µm.

[0108] In Embodiment 8 of this utility model, adhesive a can also be used to bond the connecting membrane 330 and the composite membrane 370 and the electromagnetic induction heating layer 310 and the composite membrane 370.

[0109] The manufacturing method of the flap-type sealing gasket in Embodiment 8 of this utility model is as follows:

[0110] First, an adhesive is applied to the upper surface of the electromagnetic induction heating layer roll, and the upper surface of the electromagnetic induction heating layer roll is dry-laminated with the lower surface of the composite film roll. The roll is then placed in a curing chamber for more than 24 hours to produce the first composite section roll.

[0111] Secondly, an adhesive is applied to the composite film surface of the first composite roll, so that the composite film surface of the first composite roll is dry-laminated with the lower surface of the connecting film roll, and then placed in a curing chamber for more than 24 hours to produce the second composite roll.

[0112] Then, an adhesive is applied to the electromagnetic induction heating layer of the second composite roll, and the electromagnetic induction heating layer of the second composite roll is dry-laminated with the upper surface of the sealing film roll. After curing in a curing chamber for more than 24 hours, the lower composite roll is produced. Alternatively, hot melt adhesive is applied to the electromagnetic induction heating layer of the second composite roll to produce the lower composite roll (i.e., the sealing composite layer roll).

[0113] Next, an adhesive is applied to the lower surface of the surface film roll, and a spliced ​​flap film roll is sandwiched in the middle. The lower surface of the surface film roll, the upper surface of the spliced ​​flap film roll, and the connecting film surface of the lower composite roll are dry-laminated using a sandwich lamination method. The roll is then placed in a curing chamber for more than 24 hours to produce a flap-type sealing gasket roll.

[0114] Finally, cut the flap-type sealing gasket to the appropriate size according to the user's needs.

[0115] Example 9:

[0116] Cooperate Figure 13 As shown, the main difference between Embodiment 9 and Embodiment 6 of this utility model lies in the upper layer 100 and the adhesive composite layer 300; in addition, the flap layer of Embodiment 9 adopts a folded flap membrane 231.

[0117] Specifically, in Embodiment Nine of this utility model, the upper layer 100 includes a surface film 110 and a first connecting film 120; the first connecting film 120 is disposed below the surface film 110. In other words, the first connecting film 120 can be directly laminated below the surface film 110, or the first connecting film 120 can be indirectly laminated below the surface film 110 (i.e., other structures are disposed between the surface film 110 and the first connecting film 120). The adhesive composite layer 300 includes a second connecting film 350, a thickening layer 360, an electromagnetic induction heating layer 310, and an adhesive layer 320 laminated sequentially from top to bottom.

[0118] In embodiment nine of this utility model, in conjunction with Figure 13As shown, the first connecting film 120 is disposed on the bottom layer of the upper layer 100. The first connecting film 120 is used to bond with the adhesive composite layer 300. Specifically, the first connecting film 120 is bonded to the adhesive composite layer 300 by an adhesive 210. The first connecting film 120 may include at least one of PE film, PP film, PA film, EMMA film, and EMAC film. The thickness of the first connecting film 120 is preferably 12 to 100 µm. This improves the peel strength after the first connecting film 120 and the adhesive composite layer 300 are bonded together.

[0119] In embodiment nine of this utility model, in conjunction with Figure 13 As shown, the second connecting film 350 is disposed above the electromagnetic induction heating layer 310. In other words, the second connecting film 350 can be directly laminated above the electromagnetic induction heating layer 310, or it can be indirectly laminated above the electromagnetic induction heating layer 310 (i.e., other structures are disposed between the second connecting film 350 and the electromagnetic induction heating layer 310). Figure 13 As shown, the second connecting film 350 is disposed on the uppermost layer of the adhesive composite layer 300 and is used to composite with the upper layer 100. Specifically, the second connecting film 350 is composited with the first connecting film 120 of the upper layer 100 by an adhesive 210. The second connecting film 350 may include at least one of PE film, PP film, PA film, EMMA film and EMAC film, and the thickness of the second connecting film 350 is preferably 12 to 100 µm. In this way, the peel strength after the second connecting film 350 and the first connecting film 120 of the upper layer 100 are composited can be improved.

[0120] In embodiment nine of this utility model, in conjunction with Figure 13 As shown, the thickening layer 360 is disposed above the electromagnetic induction heating layer 310, and the thickening layer 360 is used to increase the thickness of the flap-type sealing gasket of this invention. The thickening layer 360 includes at least one of EPE layer, EPP layer, PE layer, PP layer and paper, and the thickness of the thickening layer 360 is preferably 60 to 3000 µm; thereby, the thickness of the flap-type sealing gasket of this invention can be increased.

[0121] In Embodiment Nine of this invention, adhesive a can be used to bond the second connecting film 350 and the thickening layer 360, as well as the thickening layer 360 and the electromagnetic induction heating layer 310. Adhesive a can be a composite adhesive capable of achieving a peel strength greater than or equal to 4 N / 15 mm between the two bonded layers (e.g., the second connecting film 350 and the thickening layer 360, or the thickening layer 360 and the electromagnetic induction heating layer 310), but is not limited thereto. Furthermore, adhesive a can also be used to bond the surface film 110 and the first connecting film 120. Adhesive a can be a composite adhesive capable of achieving a peel strength greater than or equal to 4 N / 15 mm between the two bonded layers (e.g., the surface film 110 and the first connecting film 120), but is not limited thereto.

[0122] The manufacturing method of the flap-type sealing gasket in Embodiment 9 of this utility model is as follows:

[0123] First, an adhesive is applied to the upper surface of the electromagnetic induction heating layer roll material, and the upper surface of the electromagnetic induction heating layer roll material is dry-laminated with the lower surface of the thickened layer roll material. The roll material is then placed in a curing chamber for more than 24 hours to produce the first composite section roll material.

[0124] Secondly, an adhesive is applied to the thickened layer of the first composite roll, so that the thickened layer of the first composite roll is dry-laminated with the lower surface of the second connecting film roll, and then placed in a curing chamber for more than 24 hours to produce the second composite roll.

[0125] Then, an adhesive is applied to the electromagnetic induction heating layer of the second composite roll, and the electromagnetic induction heating layer of the second composite roll is dry-laminated with the upper surface of the sealing film roll. After curing in a curing chamber for more than 24 hours, the lower composite roll is produced. Alternatively, hot melt adhesive is applied to the electromagnetic induction heating layer of the second composite roll to produce the lower composite roll (i.e., the sealing composite layer roll).

[0126] Next, with the cross-sectional width of the upper folded valve being less than or equal to the cross-sectional width of the lower folded valve, the valve roll is folded in half and pressed into a dead fold to make a folded valve roll.

[0127] Next, an adhesive is applied to the lower surface of the folded flap membrane roll, so that the lower surface of the folded flap membrane roll is dry-laminated with the second connecting film surface of the lower composite roll, and then placed in a curing chamber for more than 24 hours to produce the structural layer roll.

[0128] Next, an adhesive is applied to the lower surface of the surface film roll, so that the surface film roll is dry-laminated with the upper surface of the first connecting film roll. After curing in a curing chamber for more than 24 hours, the upper composite roll (i.e., the upper layer roll) is produced.

[0129] Next, a medium-strength adhesive is applied to the first connecting film surface of the upper composite section roll material, so that the first connecting film surface of the upper composite section roll material is dry-laminated with the upper surface of the structural layer roll material, and then placed in the curing chamber for more than 24 hours to produce a flap-type sealing gasket roll material.

[0130] Finally, cut the flap-type sealing gasket to the appropriate size according to the user's needs.

[0131] To facilitate understanding of the wireless information integration chip of this utility model, the following describes the implementation method of the wireless information integration chip.

[0132] The first implementation of the wireless information integration chip:

[0133] Cooperate Figures 14 to 16 As shown, in a first embodiment of the wireless information integration sheet, the wireless information integration sheet 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.

[0134] In a first embodiment of the wireless information integration sheet, the base film 1w is used as the initial layer for fabricating the wireless information integration sheet. In one specific example, the base film 1w may include at least one of PI film, PEN film, PET film, PC film, PP film, and PE film. The thickness of the base film 1w is preferably 20 to 150 µm, within which the longitudinal tensile strength of the base film 1w is relatively high. 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.

[0135] In a first embodiment of the wireless information integration sheet, the first adhesive layer 2w is used to bond the base film 1w and the information to the heating layer 3w. 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 composite adhesive. The thickness of the first adhesive layer 2w can be 0.5 to 7 µm, and the first adhesive layer 2w can provide a peel strength greater than 4 N / 15 mm between the bonded two layers.

[0136] In the first embodiment of the wireless information integrated chip, 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, writing and transmission, so as to facilitate subsequent product traceability. The information area 31w has an antenna 312w and a chip 311w that are interconnected. The electromagnetic induction heating ring 32w can be heated by electromagnetic induction through the electromagnetic field generated by the electromagnetic induction sealing machine, causing the sealing layer 320 of this invention to melt and adhere to the container opening, thereby acting as an electromagnetic induction sealing gasket to seal the container opening. The wireless information integrated chip of this invention can generate most of the heat in the electromagnetic induction heating ring 32w, which can block the heat transfer to the central area of ​​the sealing gasket during electromagnetic induction sealing and save 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 6 to 300µm.

[0137] In the first embodiment of the wireless information integration chip, in conjunction with Figure 15 As shown, the electromagnetic induction heating ring 32w surrounds the information area 31w in a planar view. The space between the electromagnetic induction heating ring 32w and the information area 31w is filled with an ITV, meaning there are no physical connecting elements (such as the physical connecting bridge 33w described later) between the electromagnetic induction heating ring 32w and the information area 31w. This ITV, which blocks heat conduction to the information area 31w, can be 0.1 to 3 mm. The electromagnetic induction heating ring 32w can be made of metal, such as aluminum, copper, gold, silver, or tin, but is not limited to these. From the viewpoint of the effect of generating heat under varying electromagnetic fields and cost, the electromagnetic induction heating ring 32w is preferably made of aluminum foil, and its thickness is preferably 6 to 40 µm.

[0138] In the first embodiment of the wireless information integration chip, in conjunction with Figure 16As shown, the information area 31w includes a chip 311w and an antenna 312w. The chip 311w and antenna 312w can achieve wireless information transmission based on the RFID frequency band desired by the user. The chip 311w can have a unique identification code and can be selected according to the purpose. For example, the chip 311w 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 particular limitation. All such chips can be matched with the antenna 312w described later to achieve wireless information communication functionality. The antenna 312w mainly functions to generate wirelessly transmit signals, and its material can be metal, such as copper, silver, gold, tin, or aluminum, without particular limitation.

[0139] In the first embodiment of the wireless information integrated sheet, the method for manufacturing the wireless information integrated sheet roll is as follows: First, a composite adhesive (first adhesive layer 2w) is applied to the composite surface of the base film roll, and then it is laminated with the composite surface of the metal foil roll to produce a wireless information integrated sheet blank roll. Second, the metal foil of the wireless information integrated sheet blank roll is etched to electrically connect the antenna 312w and the chip 311w. Then, chip encapsulation protective adhesive is used to encapsulate the chip 311w and the chip connection part for protection using a dispensing machine to produce a wireless information integrated sheet roll (i.e., the electromagnetic induction heating layer roll mentioned above). At this time, the surface of the metal foil forms the information and heating layer 3w, and the wireless information integrated sheet blank roll becomes the wireless information integrated sheet roll. In addition, the wireless information integrated sheet roll can be cut accordingly to obtain the wireless information integrated sheet. Furthermore, if a battery is to be added to the information and heating layer 3w, a welding machine or conductive adhesive can be used to process the battery cell and the chip 311w into an electrical connection.

[0140] The second implementation of the wireless information integration chip:

[0141] Cooperate Figure 17 As shown, the difference between the second embodiment of the wireless information integration sheet and the first embodiment is that, in the second embodiment, in addition to the base film 1w, the first adhesive layer 2w, and the information and heating layer 3w described above, the wireless information integration sheet also includes 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.

[0142] In a second embodiment of the wireless information integration sheet, the second adhesive layer 4w only needs to be able to bond the information layer 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 0.5 to 7 µm, preferably such that the peel strength between the two bonded layers is greater than 4 N / 15 mm. 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 sheet.

[0143] In a second embodiment of the wireless information integrated chip, 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 that would affect its wireless information transmission capability. The protective layer 5w may include at least one of PET film, PP film, PE film, PA film, PVDC film, EVOH film, PEN film, and PI film, and the thickness of the protective layer 5w may be 12 to 100 µm. Furthermore, either the upper or lower surface of the protective layer 5w can be used as a printing surface.

[0144] The third implementation method of the wireless information integration chip: in conjunction with Figure 18 and Figure 19 As shown, the difference between the third and first embodiments of the wireless information integration chip is that in the third embodiment, at least one physical connection bridge 33w is provided between the information area 31w and the electromagnetic induction heating ring 32w. The physical connection bridge 33w connects the information area 31w and the electromagnetic induction heating ring 32w. The physical connection bridge 33w, the antenna 312w of the information area 31w, and the electromagnetic induction heating ring 32w can be integrated. The length of the physical connection bridge 33w can be 0.1 to 3 mm, and the width of the physical connection bridge 33w can be 0.01 to 5 mm. In this case, although the electromagnetic induction heating ring 32w and the information area 31w are electrically connected through the physical connection bridge 33w, the wireless communication distance is hardly reduced, and the physical connection bridge 33w conducts very little heat.

[0145] It should be noted that the cross-sectional width W2 of the flap layer 230 is greater than or equal to one-sixth of the cross-sectional width W1 of the flap-type sealing gasket 50, and the cross-sectional width W2 of the flap layer 230 is less than or equal to five-sixths of the cross-sectional width W1 of the flap-type sealing gasket 50. When the diameter of the flap-type sealing gasket is relatively large, the cross-sectional width of the flap layer 230 can be smaller; when the diameter of the flap-type sealing gasket is relatively small, the cross-sectional width of the flap layer 230 can be larger.

[0146] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A pull-apart closure gasket, characterized by: The upper layer, the connecting layer and the sealing composite layer are sequentially compounded from top to bottom; The upper layer comprises a surface film; The sealing composite layer comprises an electromagnetic induction heating layer and a sealing layer sequentially compounded from top to bottom; The connecting layer comprises a connecting adhesive and a pull-tab layer; the connecting layer compounds the upper layer and the sealing composite layer through the connecting adhesive, and forms an un-adhered area between the upper layer and the sealing composite layer; the pull-tab layer is arranged in the un-adhered area, and the pull-tab layer is compounded with the upper layer through a compounding adhesive and / or the pull-tab layer is compounded with the sealing composite layer through an adhering adhesive.

2. The pull-tab closure gasket of claim 1, wherein: The pull-tab layer is compounded with the upper layer through a compounding adhesive, a gap area is formed between the pull-tab layer and the sealing composite layer, and the connecting adhesive makes the peeling strength between the upper layer and the sealing composite layer greater than or equal to 17.8 N / 15 mm; The pull-tab layer adopts a single-piece pull-tab film, and the single-piece pull-tab film comprises at least one of paper, a PET film, a PP film, a PA film, a PEN film and a PI film.

3. The pull-apart closure gasket of claim 1, wherein: The pull-tab layer is compounded with the sealing composite layer through an adhering adhesive, a gap area is formed between the pull-tab layer and the upper layer, and the connecting adhesive makes the peeling strength between the upper layer and the sealing composite layer greater than or equal to 17.8 N / 15 mm; The pull-tab layer adopts a single-piece pull-tab film, and the single-piece pull-tab film comprises at least one of paper, a PET film, a PP film, a PA film, a PEN film and a PI film.

4. The pull-apart closure gasket of claim 1 wherein: The pull-tab layer adopts a folded pull-tab film, and the folded pull-tab film comprises a first upper folded pull-tab film and a first lower folded pull-tab film; the first upper folded pull-tab film is compounded with the upper layer through a compounding adhesive, the first lower folded pull-tab film is compounded with the sealing composite layer through an adhering adhesive, and a gap area is formed between the first upper folded pull-tab film and the first lower folded pull-tab film; The first upper folded pull-tab film and the first lower folded pull-tab film each comprise at least one of a PA film, a PP film, a PET film, a PEN film and a PI film, and the cross-sectional width of the first upper folded pull-tab film is less than or equal to the cross-sectional width of the first lower folded pull-tab film.

5. The pull-apart closure gasket of claim 1 wherein: The pull-tab layer is compounded with the upper layer through a compounding adhesive, a gap area is formed between the pull-tab layer and the sealing composite layer, and the connecting adhesive makes the peeling strength between the upper layer and the sealing composite layer greater than or equal to 17.8 N / 15 mm; The pull-tab layer adopts a spliced pull-tab film, and the spliced pull-tab film comprises a first pull-tab film and a second pull-tab film, and a gap area is formed between the first pull-tab film and the second pull-tab film; The first pull-tab film comprises at least one of a PP film, a PET film, a PA film, a PEN film and a PI film, and the second pull-tab film comprises at least one of paper, a PP film, a PET film, a PA film, a PEN film and a PI film.

6. The pull-apart closure gasket of claim 1 wherein: The pull-tab layer adopts a folded spliced pull-tab film, and the folded spliced pull-tab film comprises a second upper folded pull-tab film and a second lower folded pull-tab film; the second upper folded pull-tab film is compounded with the upper layer through a compounding adhesive, the second lower folded pull-tab film is compounded with the sealing composite layer through an adhering adhesive, and a gap area is formed between the second upper folded pull-tab film and the second lower folded pull-tab film; The second upper folded pull-tab film comprises a first pull-tab film and a second pull-tab film, and a gap area is formed between the first pull-tab film and the second pull-tab film, The first pull-tab film of the second upper folded pull-tab film and the second lower folded pull-tab film each comprise at least one of a PA film, a PP film, a PET film, a PEN film and a PI film. The second pull-tab film of the second upper folding pull-tab film comprises at least one of paper, PA film, PP film, PET film, PEN film and PI film.

7. The pull-apart closure gasket of claim 1 wherein: The profile width of the pull-tab layer is greater than or equal to one sixth of the profile width of the pull-tab type sealing gasket, and less than or equal to five sixths of the profile width of the pull-tab type sealing gasket.

8. The pull-apart closure gasket of claim 1 wherein: The adhesive sealing composite layer further comprises a connecting film; the connecting film is arranged at the uppermost layer of the adhesive sealing composite layer, and the connecting film comprises at least one of PE film, PP film, PA film, EPP film and EPE film.

9. The pull-apart closure gasket of claim 1 wherein: The upper layer further comprises a first connecting film; the first connecting film is arranged at the lowermost layer of the upper layer; and the first connecting film comprises at least one of PE film, PP film, PA film, EMMA film and EMAC film. The adhesive sealing composite layer further comprises a second connecting film; the second connecting film is arranged at the uppermost layer of the adhesive sealing composite layer; and the second connecting film comprises at least one of PE film, PP film, PA film, EPP film and EPE film.

10. The pull-apart closure gasket of claim 1 wherein: The adhesive sealing composite layer further comprises a composite film; the composite film is arranged above the electromagnetic induction heating layer; and the composite film comprises at least one of PP film, PE film, PEN film, PET film and PA film.

11. The pull-apart closure gasket of claim 1 wherein: The connecting adhesive, the bonding adhesive and the composite adhesive are dry composite glue or hot melt laminating glue; the hot melt laminating glue is made of one of PE, PP, EMAA, EAA, EEA, EMAC and EMMA.

12. The pull-apart closure gasket of any one of claims 1 to 11, wherein: The surface film comprises at least one of PEN film, PI film, PET film, PE film, PP film and PA film.

13. The pull-apart closure gasket of any one of claims 1 to 11, wherein: The adhesive sealing layer is hot melt glue; the hot melt glue is made of one of EVA, PIB, EBA, EAA, EMMA, EMAC, polyacrylate and acrylic copolymer.

14. The pull-apart closure gasket of any one of claims 1 to 11, wherein: The adhesive sealing layer comprises an adhesive sealing film and an adhesive; the adhesive sealing film comprises at least one of PE film, PP film, PA film, PVDC film, EVOH film and PET film; and the adhesive is arranged between the adhesive sealing film and the electromagnetic induction heating layer.

15. The pull-apart closure gasket of any one of claims 1 to 11, wherein: The electromagnetic induction heating layer is made of aluminum foil.

16. The pull-apart closure gasket of any one of claims 1 to 11, wherein: The electromagnetic induction heating layer is made of a wireless information integrated sheet. The wireless information integrated sheet comprises a base film, an information and heating layer and a first adhesive layer; the information and heating layer comprises an information area and an electromagnetic induction heating ring; the information area is provided with an antenna and a chip which are in communication with each other; the electromagnetic induction heating ring surrounds the information area; and the first adhesive layer is arranged between the base film and the information and heating layer.

17. The pull-apart closure gasket of claim 16, wherein: The wireless information integrated sheet further comprises a protective layer and a second adhesive layer; the protective layer is arranged on the side of the information and heating layer which is away from the base film; and the second adhesive layer is arranged between the information and heating layer and the protective layer.

18. The pull-apart closure gasket of claim 16, wherein: The electromagnetic induction heating ring and the information area are spaced apart.

19. The pull-apart closure gasket of claim 18, wherein: The spacing between the electromagnetic induction heating ring and the information area is 0.1 mm to 3 mm.

20. The pull-apart closure gasket of claim 18, wherein: The electromagnetic induction heating ring and the information area are spaced apart.

21. The pull-apart closure gasket of claim 18, wherein: The information and heating layer further comprises at least one physical connection bridge; and the physical connection bridge connects the information area and the electromagnetic induction heating ring.

Images