Easily-opened sealing gasket

Abstract

The invention discloses a sealing gasket easy to open. The sealing gasket 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 bonding and sealing composite layer comprises a lower connecting film, an electromagnetic induction heating layer and a bonding and sealing layer which are sequentially compounded from top to bottom; the connection layer includes a connection adhesive, the connection layer composites the upper layer and the adhesive composite layer by the connection adhesive, and an unbonded region is formed between the upper layer and the adhesive composite layer. The door has the advantage of being easy to open.

Description

Technical Field

[0001] The invention relates to the field of sealing gaskets, in particular to an easy-open sealing gasket. Background Art

[0002] In order to prevent the contents in packaging containers (such as beverage cans and medicine cans) from leaking out and being affected by the external environment and deteriorating, a sealing gasket is used to seal the container mouth of the packaging container. By using the sealing gasket to tightly combine with the container mouth, the effect of preventing the contents from leaking out and sealing and preserving the contents can be achieved.

[0003] However, the design of the conventional sealing gasket mainly considers the sealing property, but does not consider the ease of tearing. In this case, the aluminum foil or cardboard of the sealing gasket closing the container mouth is not easy to open by pressing with fingers, and cutting with a knife or poking with an awl is both troublesome and dangerous, causing inconvenience to the user.

[0004] In view of the above problems, it is necessary to study an easy-open sealing gasket, which has the advantage of being easy to open. Summary of the invention

[0005] The object of the present invention is to provide an easy-open sealing gasket, which has the advantage of being easy to open.

[0006] In order to achieve the above object, the solution of the present invention is: An easy-open sealing gasket comprises an upper layer, a connecting layer and a sealing composite layer which are compounded in sequence from top to bottom; the upper layer comprises a surface film; the sealing composite layer comprises a lower connecting film, an electromagnetic induction heating layer and a sealing layer which are compounded in sequence from top to bottom; the connecting layer comprises a connecting adhesive, the connecting layer compounds the upper layer with the sealing composite layer through the connecting adhesive, and forms an unbonded area between the upper layer and the sealing composite layer.

[0007] The cross-sectional width of the coating range of the bonding adhesive of the bonding layer is greater than or equal to one sixth of the cross-sectional width of the easy-open sealing gasket, and the cross-sectional width of the coating range of the bonding adhesive is less than or equal to five sixths of the cross-sectional width of the easy-open sealing gasket.

[0008] The connecting layer also includes an interlayer and a coating layer; the interlayer is arranged in the unbonded area, and the interlayer is composited with the upper layer by a composite adhesive; the interlayer includes at least one of a PET film, a PP film, a PA film, a PEN film and a PI film, and the thickness of the interlayer is 12 to 24µm; the coating layer is coated on the lower surface of the interlayer, the material of the coating layer is varnish or silicone oil, and the thickness of the coating layer is 0.5 to 20µm.

[0009] The composite adhesive is a dry composite adhesive or a hot-melt laminating adhesive. The material of the hot-melt laminating adhesive is one of PE, PP, EMAC, EMAA, EEA, EAA and EMMA. The thickness of the hot-melt laminating adhesive is 4 to 60 µm.

[0010] The connecting layer also includes an interlayer and a coating layer; the interlayer is arranged in the unbonded area, and the interlayer is composited with the adhesive composite layer by a composite adhesive; the interlayer includes at least one of a PET film, a PP film, a PA film, a PEN film and a PI film, and the thickness of the interlayer is 12 to 24µm; the coating layer is coated on the upper surface of the interlayer, the material of the coating layer is varnish or silicone oil, and the thickness of the coating layer is 0.5 to 20µm.

[0011] The connecting layer also includes a coating layer, which is coated on the lower surface of the upper layer or the upper surface of the adhesive composite layer. The material of the coating layer is varnish or silicone oil, and the thickness of the coating layer is 0.5 to 20µm.

[0012] The coating layer is applied in a full-coat or dot-coat manner.

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

[0014] The lower connecting film includes at least one of a PE film, a PP film, a PET film, a PA film, an EPP film and an EPE film, and the thickness of the lower connecting film is 12 to 200 μm.

[0015] The upper layer also includes an upper connecting film, which is arranged below the surface film; the upper connecting film includes at least one of a PE film, a PP film, a PA film, an EMMA film and an EMAC film, and the thickness of the upper connecting film is 12 to 100 μm.

[0016] The adhesive sealing composite layer also includes a thickening layer, which is arranged above the electromagnetic induction heating layer. The thickening layer includes at least one of an EPE layer, an EPP layer, a PE layer, a PP layer and paper. The thickness of the thickening layer is 60 to 2000µm.

[0017] The sealing composite layer also includes a composite film, which is arranged above the electromagnetic induction heating layer. The composite film includes at least one of a PET film, a PEN film, a PP film, a PA film and a PE film, and the thickness of the composite film is 12 to 100 μm.

[0018] The bonding adhesive is a dry composite adhesive or a hot-melt laminating adhesive. The material of the hot-melt laminating adhesive is one of PE, PP, EMAC, EMAA, EEA, EAA and EMMA. The thickness of the hot-melt laminating adhesive is 4 to 60µm.

[0019] The surface film comprises at least one of PP film, PET film, PE film, PA film, PEN film, PI film and EMAC film, and the thickness of the surface film is 12 to 150 μm.

[0020] The sealing layer is a hot melt adhesive. The material of the hot melt adhesive is one of EVA, PIB, EBA, EAA, EMAA, EMAC, acrylic copolymer and polyacrylate. The thickness of the hot melt adhesive is 4 to 100µm.

[0021] The sealing layer comprises a sealing film and an adhesive, wherein the sealing film is at least one of PE film, PP film, PA film, PVDC film, EVOH film and PET film; and the adhesive is arranged between the sealing film and the electromagnetic induction heating layer.

[0022] The electromagnetic induction heating layer adopts aluminum foil.

[0023] The electromagnetic induction heating layer adopts a wireless information integrated sheet; the wireless information integrated sheet 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 connected to each other, 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.

[0024] 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.

[0025] There is a gap between the electromagnetic induction heating ring and the information area.

[0026] The interval between the electromagnetic induction heating ring and the information area is 0.1mm to 3mm.

[0027] There is a full space between the electromagnetic induction heating ring and the information area.

[0028] The information and heating layer also includes at least one physical connection bridge, which connects the information area and the electromagnetic induction heating ring.

[0029] The bonding adhesive makes the peel strength between the upper layer and the adhesive sealing composite layer greater than or equal to 17.8N / 15mm.

[0030] After adopting the above scheme, the easy-open sealing gasket of the present invention forms an unbonded area between the upper layer and the adhesive composite layer, so that the user can easily peel off the part of the easy-open sealing gasket of the present invention on the upper side of the unbonded area, and easily tear off the easy-open sealing gasket of the present invention by applying force on the part on the upper side of the unbonded area, thereby having the advantage of being easy to open. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1Schematic diagram of the structure of the easy-open sealing gasket of the first embodiment of the present invention.

[0032] Figure 2 The figure is a schematic diagram of the use of the easy-open sealing gasket according to the first embodiment of the present invention.

[0033] Figure 3 It is a schematic structural diagram of the easy-open sealing gasket of the second embodiment of the present invention.

[0034] Figure 4 Schematic diagram of the use of the easy-open sealing gasket of the second embodiment of the present invention.

[0035] Figure 5 It is a schematic structural diagram of the easy-open sealing gasket of the third embodiment of the present invention.

[0036] Figure 6 Schematic diagram of the structure of the easy-open sealing gasket of the fourth embodiment of the present invention.

[0037] Figure 7 It is a schematic structural diagram of the easy-open sealing gasket of the fifth embodiment of the present invention.

[0038] Figure 8 Schematic diagram of the structure of the easy-open sealing gasket of Example 6 of the present invention.

[0039] Fig. 9 Schematic diagram of the structure of the easy-open sealing gasket of embodiment 7 of the present invention.

[0040] Fig.10 Schematic diagram of the structure of the easy-open sealing gasket of Example 8 of the present invention.

[0041] Fig.11 It is a cross-sectional schematic diagram of the first embodiment of the wireless information integrated chip of the present invention.

[0042] Fig.12 This is a plan view of the information and heating layer of the first embodiment of the wireless information integrated sheet of the present invention.

[0043] Fig.13 This is a plan view of the information area of ​​the first embodiment of the wireless information integrated sheet of the present invention.

[0044] Fig.14 It is a cross-sectional schematic diagram of a second embodiment of the wireless information integrated chip of the present invention.

[0045] Fig.15 This is a plan view of the information and heating layer of the third embodiment of the wireless information integrated sheet of the present invention.

[0046] Fig.16This is a schematic plan view of the information area of ​​the third embodiment of the wireless information integrated chip of the present invention. Upper layer 100, surface film 110, upper connecting film 120, Bonding layer 200, bonding adhesive 210, composite adhesive 220, interlayer 230A, coating layer 230B, Sealing composite layer 300, electromagnetic induction heating layer 310, sealing layer 320, sealing film 321, adhesive 322, lower connecting film 330, composite film 340, thickening layer 350, Adhesive a, The gap area SA, Unbonded area UA.

[0047] 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 DESCRIPTION

[0048] In order to further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments.

[0049] Embodiment 1: Cooperate Figure 1 and Figure 2 As shown, in embodiment 1 of the present invention, the easy-open sealing gasket of the present invention includes an upper layer 100, a connecting layer 200 and a sealing composite layer 300 which are compounded in sequence from top to bottom; wherein, the upper layer 100 includes a surface film 110, the connecting layer 200 includes a connecting adhesive 210, and the sealing composite layer 300 includes a lower connecting film 330, an electromagnetic induction heating layer 310 and a sealing layer 320 which are compounded in sequence from top to bottom.

[0050] In the first embodiment of the present invention, the upper layer 100 is disposed on the uppermost layer of the easy-open sealing gasket of the present invention. Figure 1 As shown, the upper layer 100 includes a surface film 110, which is used as the uppermost layer (i.e., the surface layer) of the easy-open sealing gasket of the present invention. The upper surface and / or the lower surface of the surface film 110 can be a printing surface, which can be used to print different patterns. The surface film 110 includes at least one of PP film, PET film, PE film, PA film, PEN film, PI film, and EMAC film; the thickness of the surface film 110 is preferably 12 to 150µm, within this range, the tensile strength is greater, the surface is flat and the glossiness is better; in addition, when the bottom of the easy-open sealing gasket of the present invention feels heat conduction, the surface film 110 can be prevented from being bonded to other external components (such as bottle caps, etc.).

[0051] In the first embodiment of the present invention, the bonding layer 200 is disposed between the upper layer 100 and the adhesive composite layer 300. Figure 1 As shown, the connecting layer 200 includes a connecting adhesive 210, and the connecting layer 200 uses the connecting adhesive 210 to compound the upper layer 100 and the sealing composite layer 300, and forms an unbonded area UA between the upper layer 100 and the sealing composite layer 300, so as to ensure that the partial area between the upper layer 100 and the sealing composite layer 300 is separated from each other (i.e., not completely compounded with each other), so that the user can easily open the easy-open sealing gasket of the present invention by hand without the help of external objects. The easy-open sealing gasket of the present invention uses the connecting adhesive 210 to make the peel strength between the upper layer 100 and the sealing composite layer 300 greater than or equal to 17.8N / 15mm, so that the upper layer 100 and the sealing composite layer 300 can be firmly compounded. The connecting adhesive 210 can be a bonding glue that can make the peel strength between the upper layer 100 and the sealing composite layer 300 greater than or equal to 17.8N / 15mm, but is not limited thereto. The bonding adhesive 210 may also be a dry composite adhesive or a hot melt laminating adhesive, and the material of the hot melt laminating adhesive is one of PE, PP, EMAC, EMAA, EEA, EAA and EMMA, and the thickness of the hot melt laminating adhesive is preferably 4 to 60 µm.

[0052] In the first embodiment of the present invention, the adhesive sealing composite layer 300 is arranged at the bottom layer of the easy-open sealing gasket of the present invention. Figure 1 As shown, the adhesive sealing composite layer 300 includes a lower connecting film 330, an electromagnetic induction heating layer 310 and an adhesive sealing layer 320 which are compounded in sequence from top to bottom. The electromagnetic induction heating layer 310 can be an aluminum foil, which is an existing structure in the conventional sealing gasket. The thickness of the aluminum foil is preferably 10 to 40 μm, so as to enhance the barrier function against moisture and oxygen, and produce the effect of preventing the leakage of the contents and sealing and preserving the contents. The electromagnetic induction heating layer 310 can also be the following wireless information integrated sheet, which can increase the function of wireless information transmission, reduce the waste of aluminum foil materials, reduce energy consumption, avoid the waste of manpower, avoid the interference of metal and liquid, improve production efficiency, have good communication performance and greatly improve the communication distance, greatly improve the automation, digitization and intelligent development of factories, warehouses, logistics, stores, and unmanned cashier management. The thickness of the wireless information integrated sheet is preferably 27 μm to 2.5 mm.

[0053] In the first embodiment of the present invention, the adhesive layer 320 is mainly used to seal the container mouth, and the adhesive layer 320 can be a hot melt adhesive. The material of the hot melt adhesive is one of EVA, PIB, EBA, EAA, EMAC, polyacrylate, acrylic copolymer and EMAA, which can be easily opened from the bottle mouth after electromagnetic induction sealing or easily opened cleanly from the bottle mouth, but is not limited thereto; the thickness of the hot melt adhesive is preferably 4 to 100µm. The hot melt adhesive can achieve a continuous sealing effect when the contents of the glass container contain water, and can also achieve a continuous sealing effect when the contents of the glass container contain chili, garlic, fermented bean curd, honey, and spicy additives.

[0054] In the first embodiment of the present invention, the lower connecting film 330 is disposed above the electromagnetic induction heating layer 310; the lower connecting film 330 can be directly compounded above the electromagnetic induction heating layer 310, or the lower connecting film 330 can also be indirectly compounded above the electromagnetic induction heating layer 310 (that is, other structures are arranged between the lower connecting film 330 and the electromagnetic induction heating layer 310). Figure 1 As shown, the lower connecting film 330 is arranged on the uppermost layer of the adhesive composite layer 300, and the lower connecting film 330 is used to be composited with the upper layer 100, and the lower connecting film 330 is composited with the surface film 110 of the upper layer 100 through the bonding adhesive 210. The lower connecting film 330 includes at least one of a PE film, a PP film, a PET film, a PA film, an EPP film, and an EPE film, and the thickness of the lower connecting film 330 is preferably 12 to 200 μm, thereby improving the peel strength between the lower connecting film 330 and the upper layer 100 after composite.

[0055] In the first embodiment of the present invention, when the easy-open sealing gasket of the present invention is used to seal the container mouth of the packaging container, it can not only prevent the leakage of the contents and the deterioration due to the influence of the external environment, but also allow the user to easily peel off the easy-open sealing gasket of the present invention from the container mouth by pinching the easy-open sealing gasket of the present invention above the unbonded area UA without the help of external objects, thereby achieving the effect of easy opening.

[0056] In the first embodiment of the present invention, the cross-sectional width W1 of the coating range of the bonding adhesive 210 can be greater than or equal to one-sixth of the cross-sectional width W2 of the easy-open sealing gasket of the present invention, and the cross-sectional width W1 of the coating range of the bonding adhesive 210 can be less than or equal to five-sixths of the cross-sectional width W2 of the easy-open sealing gasket of the present invention, so that the manufacturer can adjust the coating range of the bonding adhesive 210 according to actual needs, thereby further increasing the design flexibility of the manufacturer. In addition, when the cross-sectional width W2 of the easy-open sealing gasket of the present invention is relatively large, the cross-sectional width W1 of the coating range of the bonding adhesive 210 can be smaller; and when the cross-sectional width W2 of the easy-open sealing gasket of the present invention is relatively small, the cross-sectional width W1 of the coating range of the bonding adhesive 210 can be larger.

[0057] Embodiment 2: Cooperate Figure 3 and Figure 4 As shown, the difference between the second embodiment of the present invention and the first embodiment is that the easy-open sealing gasket further includes an interlayer 230A and a coating layer 230B.

[0058] Specifically, in the second embodiment of the present invention, the interlayer 230A can be arranged in the unbonded area UA; the interlayer 230A is composited with the upper layer 100 through the composite adhesive 220. The interlayer 230A includes at least one of a PET film, a PP film, a PA film, a PEN film, and a PI film, and the thickness of the interlayer 230A is preferably 12 to 24µm; the composite adhesive 220 makes the peeling strength between the interlayer 230A and the upper layer 100 greater than or equal to 17.8N / 15mm, so that the composite interlayer 230A and the upper layer 100 can be stabilized. The composite adhesive 220 can be a bonding adhesive that can make the peeling strength between the interlayer 230A and the upper layer 100 greater than or equal to 17.8N / 15mm, but is not limited thereto. The composite adhesive 220 may also be a dry composite adhesive or a hot melt laminating adhesive, and the material of the hot melt laminating adhesive may be one of PE, PP, EMAC, EMAA, EEA, EAA and EMMA, and the thickness of the hot melt laminating adhesive is preferably 4 to 60 µm. In order to improve the convenience of manufacturing, the composite adhesive 220 may be the same as the connecting adhesive 210, that is, the connecting adhesive 210 and the composite adhesive 220 may be used as the same adhesive and applied at the same time.

[0059] In the second embodiment of the present invention, the coating layer 230B can be coated on the lower surface of the interlayer 230A. The material of the coating layer 230B can be varnish or silicone oil, and the thickness of the coating layer 230B is preferably 0.5 to 20µm. Since the lower surface of the interlayer 230A is coated with the coating layer 230B, and the interlayer 230A is not compounded with the sealing composite layer 300 through other adhesives, there can be a gap area SA between the coating layer 230B and the sealing composite layer 300, so as to ensure that the partial area between the interlayer 230A and the sealing composite layer 300 is separated from each other (i.e., not completely compounded with each other), so that the user can easily open the easy-open sealing gasket of the present invention by hand without the help of external objects.

[0060] It should be noted that, with respect to conventional sealing gaskets, when the interval between the electromagnetic induction heating layer 310 and the interlayer 230A becomes thinner and thinner, after electromagnetic induction sealing, the interlayer 230A of the conventional sealing gasket tends to adhere to the film below it, which makes it difficult for the user to open the interlayer 230A. However, since the lower surface of the interlayer 230A is coated with varnish or silicone oil (i.e., the coating layer 230B), the user can easily open the interlayer 230A with his fingers, thereby ensuring that the user can directly pinch the interlayer 230A with his hands without the help of external objects and easily uncover the easy-open sealing gasket of the present invention.

[0061] In the second embodiment of the present invention, the coating layer 230B can be coated in a full coating or dot coating manner, so that the user can easily open the interlayer 230A with his fingers, thereby ensuring that the user can directly pinch the interlayer 230A with his hands without the help of external objects and easily uncover the easy-open sealing gasket of the present invention. Taking the dot coating method as an example, after electromagnetic induction sealing, the trace amount of air between the dot matrix of the dot coating of varnish or silicone oil of the easy-open sealing gasket of the present invention provided in this case will be heated and expanded by electromagnetic induction sealing, which will cause the interlayer 230A to be pushed upward, thereby ensuring that the interlayer 230A and the adhesive composite layer 300 are separated from each other, so that the user can more easily open the interlayer 230A with his fingers, thereby ensuring that the user can directly pinch the interlayer 230A with his hands without the help of external objects and easily uncover the easy-open sealing gasket of the present invention. The cross-sectional width W3 of the coating range of the coating layer 230B can be greater than or equal to one sixth of the cross-sectional width W2 of the easy-open sealing gasket of the present invention, and the cross-sectional width W3 of the coating range of the coating layer 230B can be less than or equal to five sixths of the cross-sectional width W2 of the easy-open sealing gasket of the present invention, thereby allowing manufacturers to adjust the coating range of the coating layer 230B according to actual needs, thereby further increasing the manufacturer's design flexibility.

[0062] Embodiment three: Cooperate Figure 5 As shown, the difference between the third embodiment of the present invention and the first embodiment is that the easy-open sealing gasket further includes a coating layer 230B, and the coating layer 230B is coated on the lower surface of the upper layer 100 .

[0063] Specifically, in the third embodiment of the present invention, the coating layer 230B is coated on the lower surface of the surface film 110 of the upper layer 100; the material of the coating layer 230B can be varnish or silicone oil, and the thickness of the coating layer 230B is preferably 0.5 to 20µm. Since the coating layer 230B is coated on a part of the lower surface of the upper layer 100, and the upper layer 100 is not compounded with the adhesive composite layer 300 through other adhesives, there can be a gap area SA between the coating layer 230B and the adhesive composite layer 300, so as to ensure that the coating layer 230B and the adhesive composite layer 300 are separated from each other (i.e., not completely compounded with each other), so that the user can easily open the easy-open sealing gasket of the present invention by hand without the help of external objects.

[0064] In the third embodiment of the present invention, the coating layer 230B can be coated in a full coating or dot coating manner. The cross-sectional width W3 of the coating range of the coating layer 230B can be greater than or equal to one sixth of the cross-sectional width W2 of the easy-open sealing gasket of the present invention, and the cross-sectional width W3 of the coating range of the coating layer 230B can be less than or equal to five sixths of the cross-sectional width W2 of the easy-open sealing gasket of the present invention.

[0065] Embodiment 4: Cooperate Figure 6 As shown, the difference between the fourth embodiment of the present invention and the first embodiment is that the adhesive sealing composite layer 300 of the easy-open sealing gasket further includes a composite film 340 .

[0066] Specifically, in the fourth embodiment of the present invention, the composite film 340 is disposed above the electromagnetic induction heating layer 310, more specifically, the composite film 340 is disposed between the lower connecting film 330 and the electromagnetic induction heating layer 310, and the composite film 340 is used to improve the tensile strength of the easy-open sealing gasket of the present invention. The composite film 340 includes at least one of a PET film, a PP film, a PA film, and a PE film, and the thickness of the composite film 340 is preferably 12 to 100 μm.

[0067] In the fourth embodiment of the present invention, adhesive a can be used to laminate the lower connecting film 330 and the composite film 340 and the electromagnetic induction heating layer 310 and the composite film 340. Adhesive a can be a composite glue that can make the peel strength between the two laminated layers (for example, the lower connecting film 330 and the electromagnetic induction heating layer 310 or the electromagnetic induction heating layer 310 and the composite film 340) greater than or equal to 4N / 15mm, but is not limited thereto.

[0068] In the fourth embodiment of the present invention, the sealing layer 320 includes a sealing film 321 and an adhesive 322, and the adhesive 322 is disposed between the sealing film 321 and the electromagnetic induction heating layer 310. The sealing film 321 includes at least one of a PE film, a PP film, a PA film, a PVDC film, an EVOH film, and a PET film, which can be easily opened from the bottle mouth after electromagnetic induction sealing or can be easily opened cleanly from the bottle mouth, and the thickness of the sealing film 321 is preferably 12 to 100 μm; and the adhesive 322 can be, for example, a composite adhesive, etc., but is not limited thereto.

[0069] The method for manufacturing the easy-open sealing gasket of the fourth embodiment of the present invention is as follows: First, an adhesive is applied to the lower surface of the composite film roll, so that the lower surface of the composite film roll and the upper surface of the electromagnetic induction heating layer roll are dry-laminated, and then placed in a maturing chamber for more than 24 hours to make a first composite roll; Secondly, an adhesive is applied to the composite film surface of the first composite part roll material, so that the composite film surface of the first composite part roll material and the lower surface of the lower connecting film roll material are dry-compounded, and the roll material is placed in a maturing chamber for more than 24 hours to produce a second composite part roll material; Then, an adhesive is applied to the electromagnetic induction heating layer of the second composite part coil, so that the electromagnetic induction heating layer of the second composite part coil and the upper surface of the adhesive film coil are dry-compounded, and the coil is placed in a aging chamber for more than 24 hours to make a lower composite part coil; alternatively, a hot melt adhesive is applied to the electromagnetic induction heating layer of the second composite part coil to make a lower composite part coil; Next, a bonding adhesive is applied to a designated range on the lower surface of the surface film roll material, so that the lower surface of the surface film roll material and the lower bonding film surface of the lower compounding part roll material are dry-compounded, and then placed in a maturing chamber for more than 24 hours to produce an easy-open seal gasket roll material; the designated range is between one-sixth and five-sixths of the cross-sectional width of the easy-open seal gasket; Finally, the easy-open sealing gasket is cut into appropriate sizes according to the needs of the user.

[0070] Embodiment five: Cooperate Figure 7 As shown, the difference between the fifth embodiment of the present invention and the second embodiment lies in the upper layer 100 and the adhesive composite layer 300 .

[0071] In the fifth embodiment of the present invention, the upper layer 100 includes a surface film 110 and an upper connecting film 120, and the upper connecting film 120 is arranged below the surface film 110. In other words, the upper connecting film 120 can be directly compounded below the surface film 110, and the upper connecting film 120 can also be indirectly compounded below the surface film 110 (that is, other structures are configured between the surface film 110 and the upper connecting film 120). The surface film 110 is arranged at the uppermost layer of the upper layer 100; the upper connecting film 120 is arranged at the lowermost layer of the upper layer 100 and is used to be compounded with the adhesive composite layer 300; the upper connecting film 120 is compounded with the lower connecting film 330 of the adhesive composite layer 300 through the bonding adhesive 210. The upper connecting film 120 includes at least one of PE film, PP film, PA film, EMMA film and EMAC film, and the thickness of the upper connecting film 120 is preferably 5 to 100 μm; thereby, the peel strength between the upper connecting film 120 and the lower connecting film 330 of the adhesive composite layer 300 after compounding can be improved.

[0072] In the fifth embodiment of the present invention, the sealing composite layer 300 includes a lower connecting film 330 , a thickening layer 350 , an electromagnetic induction heating layer 310 and a sealing layer 320 which are laminated in sequence from top to bottom.

[0073] In the fifth embodiment of the present invention, the lower connecting film 330 is disposed on the uppermost layer of the adhesive composite layer 300 and is used to be composited with the upper layer 100; the lower connecting film 330 is composited with the upper connecting film 120 of the upper layer 100 through the bonding adhesive 210. The lower connecting film 330 includes at least one of a PE film, a PP film, a PET film, a PA film, an EPP film, and an EPE film, and the thickness of the lower connecting film 330 is preferably 12 to 200 μm; thereby, the peel strength after composite between the lower connecting film 330 and the upper connecting film 120 of the upper layer 100 can be improved.

[0074] In the fifth embodiment of the present invention, the thickening layer 350 is disposed above the electromagnetic induction heating layer 310, and is used to increase the thickness of the easy-open sealing gasket of the present invention. The thickening layer 350 includes at least one of an EPE layer, an EPP layer, a PE layer, a PP layer, and paper, and the thickness of the thickening layer 350 is preferably 60 to 2000 µm; thereby, the thickness of the easy-open sealing gasket of the present invention can be increased.

[0075] In the fifth embodiment of the present invention, adhesive a can be used to compound the lower connecting film 330 and the thickening layer 350, and the thickening layer 350 and the electromagnetic induction heating layer 310. Adhesive a can be a composite glue that can make the peel strength between the two composite layers (for example, the lower connecting film 330 and the thickening layer 350 or the thickening layer 350 and the electromagnetic induction heating layer 310) greater than or equal to 4N / 15mm, but is not limited thereto.

[0076] In embodiment five of the present invention, adhesive a may be used to compound the surface film 110 and the upper connecting film 120. The adhesive a may be a composite adhesive capable of making the peel strength between the two composite layers (for example, the surface film 110 and the upper connecting film 120) greater than or equal to 4N / 15mm, but is not limited thereto.

[0077] The method for manufacturing the easy-open sealing gasket of the fifth embodiment of the present invention is as follows: First, apply adhesive on the lower surface of the surface film roll, make the surface film roll and the upper connecting film roll dry-compounded, put into the aging room for more than 24 hours, and make the upper composite roll; Secondly, the lower surface of the interlayer coil is coated with varnish or silicone oil in a full-coating or dot-coating manner to produce a coated pull-valve film coil; Then, an adhesive is applied to the upper surface of the electromagnetic induction heating layer coil, so that the upper surface of the electromagnetic induction heating layer coil and the lower surface of the thickening layer coil are dry-compounded, and the coil is placed in a maturing chamber for more than 24 hours to produce a first composite coil; Next, an adhesive is applied to the thickened surface of the first composite part roll material, so that the thickened surface of the first composite part roll material and the lower surface of the lower connecting film roll material are dry-compounded, and the roll material is placed in a aging chamber for more than 24 hours to produce a second composite part roll material; Next, an adhesive is applied to the electromagnetic induction heating layer of the second composite part coil, so that the electromagnetic induction heating layer of the second composite part coil and the upper surface of the adhesive film coil are dry-laminated, and the coil is placed in a aging chamber for more than 24 hours to make a lower composite part coil; alternatively, a hot melt adhesive is applied to the electromagnetic induction heating layer of the second composite part coil to make a lower composite part coil; Next, apply super strong adhesive on the upper connecting film surface of the upper composite part roll, and sandwich the coated pull-valve film roll in the middle, so that the lower surface of the upper connecting film roll of the upper composite part roll, the upper surface of the coated pull-valve film roll and the lower connecting film surface of the lower composite part roll are dry-compounded by sandwich compounding method, and put into the aging room for more than 24 hours to make the easy-open sealing gasket roll; Finally, the easy-open sealing gasket is cut into appropriate sizes according to the needs of the user.

[0078] Embodiment six: Cooperate Figure 8 As shown, the difference between the sixth embodiment of the present invention and the second embodiment lies in the different configurations of the interlayer 230A and the coating layer 230B.

[0079] Specifically, in the sixth embodiment of the present invention, the interlayer 230A is arranged in the unbonded area UA; the interlayer 230A is compounded with the adhesive composite layer 300 through the composite adhesive 220. The interlayer 230A includes at least one of a PET film, a PP film, a PA film, a PEN film, and a PI film, and the thickness of the interlayer 230A is preferably 12 to 24µm; the composite adhesive 220 makes the peel strength between the interlayer 230A and the adhesive composite layer 300 greater than or equal to 17.8N / 15mm, so that the composite interlayer 230A and 20N can be stabilized. The composite adhesive 220 can be a bonding adhesive that can make the peel strength between the interlayer 230A and 20N greater than or equal to 17.8N / 15mm, but is not limited thereto. The composite adhesive 220 may also be a dry composite adhesive or a hot melt laminating adhesive, and the material of the hot melt laminating adhesive may be one of PE, PP, EMAC, EMAA, EEA, EAA and EMMA, and the thickness of the hot melt laminating adhesive is preferably 4 to 60 µm. In order to improve the convenience of manufacturing, the composite adhesive 220 may be the same as the connecting adhesive 210, that is, the connecting adhesive 210 and the composite adhesive 220 may be used as the same adhesive and applied at the same time.

[0080] In the sixth embodiment of the present invention, the coating layer 230B may be coated on the upper surface of the interlayer 230A. The material of the coating layer 230B may be varnish or silicone oil, and the thickness of the coating layer 230B is preferably 0.5 to 20µm. Since the upper surface of the interlayer 230A is coated with the coating layer 230B, and the interlayer 230A is not compounded with the upper layer 100 through other adhesives, there may be a gap area SA between the coating layer 230B and the upper layer 100, so as to ensure that the partial area between the interlayer 230A and the upper layer 100 is separated from each other (i.e., not completely compounded with each other), so that the user can easily open the easy-open sealing gasket of the present invention by hand without the help of external objects.

[0081] It should be noted that, with respect to conventional sealing gaskets, when the interval between the electromagnetic induction heating layer 310 and the interlayer 230A becomes thinner and thinner, after electromagnetic induction sealing, the interlayer 230A of the conventional sealing gasket tends to adhere to the film above it, which makes it difficult for the user to open the interlayer 230A. However, since the upper surface of the interlayer 230A is coated with varnish or silicone oil (i.e., the coating layer 230B), the user can easily open the interlayer 230A with his fingers, thereby ensuring that the user can easily open the easy-open sealing gasket of the present invention by pinching the interlayer 230A directly with his hands without the aid of external objects.

[0082] In the sixth embodiment of the present invention, the coating layer 230B can be coated in a full coating or dot coating manner, so that the user can easily open the interlayer 230A with his fingers, thereby ensuring that the user can directly pinch the interlayer 230A with his hands without the help of external objects and easily uncover the easy-open sealing gasket of the present invention. Taking the dot coating method as an example, after electromagnetic induction sealing, the trace amount of air between the dot matrix of the dot coating of varnish or silicone oil of the easy-open sealing gasket of the present invention provided in this case will be heated and expanded by electromagnetic induction sealing, which will cause the interlayer 230A to be pushed downward, thereby ensuring that the interlayer 230A and the upper layer 100 are separated from each other, so that the user can more easily open the interlayer 230A with his fingers, thereby ensuring that the user can directly pinch the interlayer 230A with his hands without the help of external objects and easily uncover the easy-open sealing gasket of the present invention. The cross-sectional width W3 of the coating range of the coating layer 230B can be greater than or equal to one sixth of the cross-sectional width W2 of the easy-open sealing gasket of the present invention, and the cross-sectional width W3 of the coating range of the coating layer 230B can be less than or equal to five sixths of the cross-sectional width W2 of the easy-open sealing gasket of the present invention, thereby allowing manufacturers to adjust the coating range of the coating layer 230B according to actual needs, thereby further increasing the manufacturer's design flexibility.

[0083] Embodiment seven: Cooperate Fig. 9 As shown, the difference between the seventh embodiment of the present invention and the third embodiment is that the coating layer 230B is arranged differently.

[0084] In the seventh embodiment of the present invention, the coating layer 230B is coated on the upper surface of the adhesive composite layer 300. Specifically, in the seventh embodiment of the present invention, the coating layer 230B is coated on the upper surface of the lower connecting film 330 of the adhesive composite layer 300; the material of the coating layer 230B can be varnish or silicone oil, and the thickness of the coating layer 230B is preferably 0.5 to 20µm. Since the coating layer 230B is coated on a part of the lower surface of the upper layer 100, and the upper layer 100 and the adhesive composite layer 300 are not compounded through other adhesives, there can be a gap area SA between the coating layer 230B and the upper layer 100, so as to ensure that the coating layer 230B and the upper layer 100 are separated from each other (i.e., not completely compounded with each other), so that the user can easily open the easy-open sealing gasket of the present invention by hand without the help of external objects.

[0085] In the seventh embodiment of the present invention, the coating layer 230B may be coated in a full coating or in a dot coating. The cross-sectional width W3 of the coating range of the coating layer 230B may be greater than or equal to one sixth of the cross-sectional width W2 of the easy-open sealing gasket of the present invention, and the cross-sectional width W3 of the coating range of the coating layer 230B may be less than or equal to five sixths of the cross-sectional width W2 of the easy-open sealing gasket of the present invention.

[0086] Embodiment eight: Cooperate Fig.10 As shown, the difference between the eighth embodiment of the present invention and the fifth embodiment lies in the different configurations of the interlayer 230A and the coating layer 230B.

[0087] Specifically, in the eighth embodiment of the present invention, the interlayer 230A is arranged in the unbonded area UA; the interlayer 230A is compounded with the adhesive composite layer 300 through the composite adhesive 220. The interlayer 230A includes at least one of a PET film, a PP film, a PA film, a PEN film, and a PI film, and the thickness of the interlayer 230A is preferably 12 to 24µm; the composite adhesive 220 makes the peel strength between the interlayer 230A and the adhesive composite layer 300 greater than or equal to 17.8N / 15mm, so that the composite interlayer 230A and 20N can be stabilized. The composite adhesive 220 can be a bonding adhesive that can make the peel strength between the interlayer 230A and 20N greater than or equal to 17.8N / 15mm, but is not limited thereto. The composite adhesive 220 may also be a dry composite adhesive or a hot melt laminating adhesive, and the material of the hot melt laminating adhesive may be one of PE, PP, EMAC, EMAA, EEA, EAA and EMMA, and the thickness of the hot melt laminating adhesive is preferably 4 to 60 µm. In order to improve the convenience of manufacturing, the composite adhesive 220 may be the same as the connecting adhesive 210, that is, the connecting adhesive 210 and the composite adhesive 220 may be used as the same adhesive and applied at the same time.

[0088] In the eighth embodiment of the present invention, the coating layer 230B may be coated on the upper surface of the interlayer 230A. The material of the coating layer 230B may be varnish or silicone oil, and the thickness of the coating layer 230B is preferably 0.5 to 20µm. Since the upper surface of the interlayer 230A is coated with the coating layer 230B, and the interlayer 230A is not compounded with the upper layer 100 through other adhesives, there may be a gap area SA between the coating layer 230B and the upper layer 100, so as to ensure that the partial area between the interlayer 230A and the upper layer 100 is separated from each other (i.e., not completely compounded with each other), so that the user can easily open the easy-open sealing gasket of the present invention by hand without the help of external objects.

[0089] To facilitate understanding of the wireless information integrated chip of the present invention, the implementation of the wireless information integrated chip is introduced below.

[0090] The first implementation method of the wireless information integrated chip: Cooperate Figures 11 to 13 As shown, in the first embodiment of the wireless information integrated sheet, the wireless information integrated 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 so as to bond the base film 1w and the information and heating layer 3w.

[0091] In the first embodiment of the wireless information integrated sheet, the base film 1w is used to make the initial layer of the wireless information integrated sheet. In a specific example, the base film 1w may include at least one of a PI film, a PEN film, a PET film, a PC film, a PP film and a PE film, and the thickness of the base film 1w is preferably 20 to 150 μm. Within this range, the longitudinal tensile strength of the base film 1w is relatively large. The lower surface of the base film 1w is bonded to the first adhesive layer 2w, and the upper surface of the base film 1w can be used as a printing surface to print different patterns.

[0092] In the first embodiment of the wireless information integrated sheet, the first adhesive layer 2w is a layer used to bond the base film 1w and the information and heating layer 3w. The first adhesive layer 2w only needs to be able to bond the base film 1w and the information and heating layer 3w, and its material can be, for example, composite glue. The thickness of the first adhesive layer 2w can be 0.5 to 7µm, and the first adhesive layer 2w can make the peel strength between the two bonded layers of material greater than 4N / 15mm.

[0093] In the first embodiment of the wireless information integrated sheet, 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 mutually conductive. The electromagnetic induction heating ring 32w can pass through the electromagnetic field generated by the electromagnetic induction sealing machine, and use electromagnetic induction to heat it, so that the adhesive layer 320 of the present invention is heated and melted and adhered to the container mouth of the packaging container, and then can be used as an electromagnetic induction sealing gasket to seal the container mouth. The wireless information integrated sheet of the present invention can generate heat in the electromagnetic induction heating ring 32w, which can not only block the heat from being transferred to the central area of ​​the sealing gasket during electromagnetic induction sealing, but also save energy waste. In addition, when applied to a sealing gasket containing a battery, the thickness of the information and heating layer 3w can be 6µm to 2.5mm; and when applied to a sealing gasket without a battery, the thickness of the information and heating layer 3w can be 6 to 300µm.

[0094] In the first embodiment of the wireless information integrated chip, Fig.12As shown, the electromagnetic induction heating ring 32w surrounds the information area 31w in a planar perspective, and there is a gap ITV between the electromagnetic induction heating ring 32w and the information area 31w, that is, there is no physical connection element (such as the physical connection bridge 33w described later) between the electromagnetic induction heating ring 32w and the information area 31w. Thereby, there is a gap ITV between the electromagnetic induction heating ring 32w and the information area 31w, and the gap ITV can block the heat from being conducted to the information area 31w. 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 0.1 to 3mm. The material of the electromagnetic induction heating ring 32w can be metal, such as aluminum, copper, gold, silver, or tin, but not limited thereto. From the perspective of the effect of generating heat when subjected to a changing electromagnetic field and the cost, the electromagnetic induction heating ring 32w is preferably aluminum foil, and its thickness is preferably 6 to 40µm.

[0095] In the first embodiment of the wireless information integrated chip, Fig.13 As shown, the information area 31w includes a chip 311w and an antenna 312w, and the chip 311w and the antenna 312w can realize the wireless information transmission function based on the RFID frequency band that the user wants to use. As for the chip 311w, it can have a unique identification code, which 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 special restrictions. These chips can all match the antenna 312w described later to realize the wireless information communication function. As for the antenna 312w, it mainly generates a signal that can be transmitted wirelessly, and its material can be metal, such as copper, silver, gold, tin or aluminum, etc., without special restrictions.

[0096] In the first embodiment of the wireless information integrated sheet coil, the method for making the wireless information integrated sheet coil can be as follows: first, apply a composite glue (first adhesive layer 2w) on the composite surface of the base film coil, and after compounding it with the composite surface of the metal foil coil, make a wireless information integrated sheet blank coil; secondly, etch the metal foil of the wireless information integrated sheet blank coil, electrically connect the antenna 312w and the chip 311w (Bonding), and then use a chip packaging protective glue to encapsulate the chip 311w and the chip connection part through a dispensing machine. At this time, the metal foil forms the information and heating layer 3w, and the wireless information integrated sheet blank coil becomes a wireless information integrated sheet coil (that is, the above-mentioned electromagnetic induction heating sheet coil). The wireless information integrated sheet coil is cut accordingly to obtain a wireless information integrated sheet. In addition, if you want to add a battery to the information and heating layer 3w, you can use a welding machine or conductive glue to process the battery cell and the chip 311w into an electrical connection.

[0097] The second implementation method of the wireless information integrated chip: Cooperate Fig.14 As shown, the difference between the second embodiment of the wireless information integrated sheet and the first embodiment of the wireless information integrated sheet is that in the second embodiment of the wireless information integrated sheet, in addition to the above-mentioned base film 1w, the first adhesive layer 2w and the information and heating layer 3w, the wireless information integrated sheet also includes a protective layer 5w and a second adhesive layer 4w. Among them, 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 is a layer used to connect the information and heating layer 3w and the protective layer 5w.

[0098] In the second embodiment of the wireless information integrated sheet, the second adhesive layer 4w can be used as long as it can bond the information to the heating layer 3w and the protective layer 5w. Its material can be, for example, dry composite adhesive, and is not particularly limited. The thickness of the second adhesive layer 4w can be 0.5 to 7µm, and it is preferably such that the peel strength between the two layers of material bonded is greater than 4N / 15mm. The second adhesive layer 4w can extend to fill the gap between the electromagnetic induction heating ring 32w and the information area 31w to enhance the overall structural strength of the wireless information integrated sheet.

[0099] In the second embodiment of the wireless information integrated chip, the protective layer 5w is used to protect the information area 31w (i.e., the chip 311w, the antenna 312w, and the battery that can be added) from being damaged by external forces and affecting 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. The thickness of the protective layer 5w may be 12 to 100µm. In addition, the upper surface or the lower surface of the protective layer 5w may be used as a printing surface.

[0100] The third implementation method of wireless information integrated chip: Fig.15 and Fig.16 As shown, the difference between the third embodiment of the wireless information integrated sheet and the first embodiment of the wireless information integrated sheet is that: in the third embodiment of the wireless information integrated sheet, 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 integrally arranged, the length of the physical connection bridge 33w can be 0.1 to 3mm, and the width of the physical connection bridge 33w can be 0.01 to 5mm. At this time, although the electromagnetic induction heating ring 32w is electrically connected to the information area 31w through the physical connection bridge 33w, the distance of wireless communication will not be reduced too much, and the physical connection bridge 33w conducts a very small amount of heat.

[0101] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made thereto by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

1. An easy-open sealing gasket, characterized in that: It includes an upper layer, a connecting layer and a bonding composite layer which are compounded in sequence from top to bottom; The upper layer includes the surface membrane; The adhesive sealing composite layer comprises a lower connecting film, an electromagnetic induction heating layer and an adhesive sealing layer which are composited in sequence from top to bottom; The bonding layer includes a bonding adhesive, and the bonding layer bonds the upper layer to the bonding composite layer through the bonding adhesive, and forms an unbonded area between the upper layer and the bonding composite layer.

2. The easy-open seal gasket according to claim 1, characterized in that: The cross-sectional width of the coating range of the bonding adhesive of the bonding layer is greater than or equal to one sixth of the cross-sectional width of the easy-open sealing gasket, and the cross-sectional width of the coating range of the bonding adhesive is less than or equal to five sixths of the cross-sectional width of the easy-open sealing gasket.

3. The easy-open seal gasket according to claim 1, characterized in that: The connecting layer also includes an interlayer and a coating layer; the interlayer is arranged in the unbonded area, and the interlayer is compounded with the upper layer by a composite adhesive; the interlayer includes at least one of a PET film, a PP film, a PA film, a PEN film and a PI film; the coating layer is coated on the lower surface of the interlayer, and the material of the coating layer is varnish or silicone oil.

4. The easy-open seal gasket according to claim 3, characterized in that: The coating layer is applied in a full-coat or dot-coat manner.

5. The easy-open seal gasket according to claim 3, characterized in that: The cross-sectional width of the coating range of the coating layer is greater than or equal to one sixth of the cross-sectional width of the easy-open sealing gasket, and the cross-sectional width of the coating range of the coating layer is less than or equal to five sixths of the cross-sectional width of the easy-open sealing gasket.

6. The easy-open seal gasket according to claim 1, characterized in that: The connecting layer also includes an interlayer and a coating layer; the interlayer is arranged in the unbonded area, and the interlayer is composited with the sealing composite layer through a composite adhesive; the interlayer includes at least one of a PET film, a PP film, a PA film, a PEN film and a PI film; the coating layer is coated on the upper surface of the interlayer, and the material of the coating layer is varnish or silicone oil.

7. The easy-open seal gasket according to claim 1, characterized in that: The connecting layer also includes a coating layer, which is coated on the lower surface of the upper layer or the upper surface of the adhesive composite layer, and the material of the coating layer is varnish or silicone oil.

8. The easy-open seal gasket according to claim 7, characterized in that: The coating layer is applied in a full-coat or dot-coat manner.

9. The easy-open seal gasket according to claim 7, characterized in that: The cross-sectional width of the coating range of the coating layer is greater than or equal to one sixth of the cross-sectional width of the easy-open sealing gasket, and the cross-sectional width of the coating range of the coating layer is less than or equal to five sixths of the cross-sectional width of the easy-open sealing gasket.

10. The easy-open seal gasket according to claim 1, characterized in that: The lower connecting film includes at least one of a PE film, a PP film, a PET film, a PA film, an EPP film, and an EPE film.

11. The easy-open seal gasket according to claim 1, characterized in that: The sealing composite layer further comprises a composite film, which is arranged above the electromagnetic induction heating layer, and comprises at least one of a PET film, a PEN film, a PP film, a PA film and a PE film.

12. The easy-open seal gasket according to claim 1, characterized in that: The bonding adhesive is a dry composite adhesive or a hot-melt laminating adhesive, and the material of the hot-melt laminating adhesive is one of PE, PP, EMAC, EMAA, EEA, EAA and EMMA.

13. The easy-open seal gasket according to any one of claims 1 to 12, characterized in that: The surface film includes at least one of PP film, PET film, PE film, PA film, PEN film, PI film and EMAC film.

14. The easy-open seal gasket according to any one of claims 1 to 12, characterized in that: The sealing layer is hot melt adhesive; the material of the hot melt adhesive is one of EVA, PIB, EBA, EAA, EMAA, EMAC, acrylic copolymer and polyacrylate.

15. The easy-open seal gasket according to claims 1 to 12, characterized in that: The sealing layer comprises a sealing film and an adhesive, wherein the sealing film is at least one of PE film, PP film, PA film, PVDC film, EVOH film and PET film; and the adhesive is arranged between the sealing film and the electromagnetic induction heating layer.

16. The easy-open seal gasket according to claim 1, characterized in that: The electromagnetic induction heating layer adopts aluminum foil.

17. The easy-open seal gasket according to claim 1, characterized in that: The electromagnetic induction heating layer adopts wireless information integrated chip; The wireless information integrated sheet 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 connected to each other, 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.

18. The easy-open seal gasket according to claim 17, characterized in that: 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.

19. The easy-open seal gasket according to claim 17, wherein: There is a gap between the electromagnetic induction heating ring and the information area.

20. The easy-open seal gasket according to claim 19, characterized in that: The interval between the electromagnetic induction heating ring and the information area is 0.1mm to 3mm.

21. The easy-open seal gasket according to claim 19, wherein: There is a full space between the electromagnetic induction heating ring and the information area.

22. The easy-open seal gasket according to claim 19, wherein: The information and heating layer also includes at least one physical connection bridge, which connects the information area and the electromagnetic induction heating ring.

23. The easy-open seal gasket according to claim 1, characterized in that: The bonding adhesive makes the peel strength between the upper layer and the adhesive sealing composite layer greater than or equal to 17.8N / 15mm.

Images