Ring pull type sealing gasket

Abstract

The invention discloses a ring pull type sealing gasket. The ring pull type sealing gasket comprises a functional layer and a bonding layer, one of the functional layer and the bonding layer is provided with an electromagnetic induction heating sheet, and the bonding layer is provided with an adhesive sealing layer located on the lowest side; the bottom surface of the functional layer and the top surface of the bonding layer are strongly bonded and compounded through an adhesive, and one of the bottom surface of the functional layer and the top surface of the bonding layer is directly coated with a release block formed by a release coating; the functional layer is provided with an annular tearing line, the annular tearing line divides the functional layer into an outer ring area and an inner ring area, and the inner ring area comprises a lifting neck part connected with the outer ring area, a lifting part connected with the lifting neck part and a hollow area located between the lifting part and the lifting neck part; the release block is opposite to the lifting part; and the functional layer is also provided with a joint tearing line which is connected with one side of the lifting part and the annular tearing line. The sealing structure has the advantages of being convenient to open and good in sealing effect when being pressed and sealed again.

Description

Technical Field

[0001] The invention relates to the field of sealing gaskets, in particular to a ring-pull type sealing gasket. Background Art

[0002] A sealing gasket is a gasket used to seal the mouth of a container, and an electromagnetic induction sealing gasket is a commonly used sealing gasket. Existing electromagnetic induction sealing gaskets use electromagnetic induction to heat aluminum foil, thereby causing the sealing film that contacts the mouth of the container to melt under heat, so that the sealing film adheres to the mouth of the container to seal the mouth of the container.

[0003] However, the existing electromagnetic induction sealing gasket is not easy to tear open after sealing the bottle mouth, which makes it inconvenient to use. Users often encounter the phenomenon that the electromagnetic induction sealing gasket is difficult to tear open when using it. Users usually have to use relatively sharp blades, scissors and other tools to cut or pierce the electromagnetic induction sealing gasket at the bottle mouth of the container, which makes it very inconvenient for users to use, the experience is poor, and there are even certain safety hazards. At the same time, after tearing off the electromagnetic induction sealing gasket, the bottle mouth of the container can no longer be effectively sealed by relying only on the bottle cap, and even if there is a retained cardboard in the bottle cap, the function of the retained cardboard to block oxygen and moisture is very poor, resulting in the unused contents in the container being easily affected by oxygen and moisture, resulting in the unused contents in the container. The shelf life is shortened and easy to deteriorate.

[0004] In view of the above problems, it is necessary to study a ring-pull sealing gasket that is easy to open and has a good sealing effect when pressed and sealed again. Summary of the invention

[0005] The object of the present invention is to provide a ring-pull sealing gasket which is easy to open and has a good sealing effect when it is compressed and sealed again.

[0006] In order to achieve the above object, the solution of the present invention is: A ring-pull sealing gasket comprises a functional layer and an adhesive layer; one of the functional layer and the adhesive layer is provided with an electromagnetic induction heating sheet, and the adhesive layer has a sealing layer at the lowest side; the bottom surface of the functional layer and the top surface of the adhesive layer are strongly bonded and compounded by an adhesive, and one of the bottom surface of the functional layer and the top surface of the adhesive layer is directly coated with a release block composed of a release coating; the functional layer is provided with an annular tear line, and the annular tear line divides the functional layer into an outer ring area and an inner ring area, and the inner ring area comprises a lifting neck connected to the outer ring area, a lifting part connected to the lifting neck, and a hollow area between the lifting part and the lifting neck; the release block is opposite to the lifting part; the functional layer is also provided with a connecting tear line connecting one side of the lifting part and the annular tear line.

[0007] The adhesive enables the peel strength between the bottom surface of the functional layer and the top surface of the adhesive layer to be greater than 12N / 15mm.

[0008] The adhesive is a dry composite adhesive or a hot melt adhesive, and the material of the hot melt adhesive is one of PE, PP, EMAC, EEA, EMAA, EAA and EMMA.

[0009] The functional layer includes a facial mask and a connecting film compounded in sequence from top to bottom; the facial mask is at least one of a PI layer, a PEN layer, a PET layer, a PE layer, a PA layer and a PP layer; the connecting film is at least one of a PET layer, an EPE layer, an EPP layer, a PP layer, a PA layer and a PE layer.

[0010] The functional layer also includes a foaming film and / or a foaming plate film between the mask and the connecting film; the foaming film is an EPE layer or an EPP layer; and the foaming plate film is an EPE layer or an EPP layer.

[0011] The functional layer also includes a composite film between the mask and the connecting film, and the composite film is at least one of a PEN layer, a PET layer, a PP layer, a PA layer and a PE layer.

[0012] The bonding layer includes the electromagnetic induction heating sheet and the sealing film which are compounded in sequence from top to bottom; the bottom surface of the bonding film is directly coated with the release block, and the coating area of ​​the release block is larger than the area where the lifting part is located.

[0013] The bonding layer includes the electromagnetic induction heating sheet and the adhesive sealing film compounded in sequence from top to bottom; the top surface of the electromagnetic induction heating sheet is directly coated with the release block, and the coating area of ​​the release block is larger than the area where the lifting part and the hollow area are located.

[0014] The functional layer includes a facial mask, an electromagnetic induction heating sheet and a connecting film which are compounded in sequence from top to bottom; the facial mask is at least one of a PI layer, a PEN layer, a PET layer, a PE layer, a PA layer and a PP layer; the connecting film is at least one of a PET layer, an EPE layer, an EPP layer, a PP layer, a PA layer and a PE layer.

[0015] The functional layer also includes a foaming film and / or a foaming plate film between the mask and the electromagnetic induction heating sheet; the foaming film is an EPE layer or an EPP layer; and the foaming plate film is an EPE layer or an EPP layer.

[0016] The functional layer also includes a composite film between the facial mask and the electromagnetic induction heating sheet, and the composite film is at least one of a PEN layer, a PET layer, a PP layer, a PA layer and a PE layer.

[0017] The bottom surface of the connecting film is directly coated with the release block, and the coating area of ​​the release block is larger than the area where the lifting part is located.

[0018] The annular tear line and the connecting tear line adopt a continuous cutting line with multiple breakpoints. The functional layer parts corresponding to the breakpoints of the continuous cutting line are not completely cut in the vertical direction, and the functional layer parts corresponding to the parts of the continuous cutting line other than the breakpoints are completely cut.

[0019] The annular tear line and the connecting tear line adopt a continuous cutting line with multiple breakpoints. The functional layer part corresponding to the breakpoints of the continuous cutting line is not cut and the length of the breakpoint is 0.02mm to 0.9mm. The functional layer part corresponding to the part of the continuous cutting line except the breakpoint is completely cut.

[0020] The annular tear line and the connecting tear line are formed by cutting in a continuous arrangement by a cutting knife, and the cutting knife has an integral blade corresponding to the annular tear line and the connecting tear line.

[0021] A pulling strip connecting the lifting neck and the lifting part is provided in the hollow area.

[0022] The electromagnetic induction heating sheet is made of aluminum foil.

[0023] The electromagnetic induction heating sheet adopts a wireless information integrated sheet, which includes a base layer, a first adhesive layer and a multi-purpose component; the multi-purpose component includes a metal layer and a wireless information chip; the metal layer is matched on the base layer through the first adhesive layer, the first adhesive layer is sandwiched between the metal layer and the base layer, the metal layer has an antenna and an electromagnetic induction heating part arranged around the antenna, and the antenna is electrically connected to the wireless information chip.

[0024] There is a gap between the electromagnetic induction heating unit and the antenna.

[0025] The electromagnetic induction heating part of the metal layer is separated from the antenna by a distance of 0.1 mm to 3 mm.

[0026] There is a full space between the electromagnetic induction heating unit and the antenna.

[0027] The metal layer further includes at least one physical connecting bridge connecting the antenna and the electromagnetic induction heating part.

[0028] The wireless information integrated sheet also includes a protective layer and a second adhesive layer. The protective layer is compounded with the base layer and the multi-purpose component through the second adhesive layer, and the protective layer completely covers the multi-purpose component.

[0029] The electromagnetic induction heating sheet has a circle of annular cutting lines with multiple breakpoints, the parts of the electromagnetic induction heating sheet corresponding to the breakpoints of the annular cutting lines are not cut and the length of the breakpoints is 0.02mm to 0.9mm, and the parts of the electromagnetic induction heating sheet corresponding to the parts other than the breakpoints of the annular cutting lines are completely cut; the annular cutting lines are located between the antenna and the electromagnetic induction heating part and surround the antenna, the annular cutting lines are opposite to the annular tearing lines, and the breakpoints of the annular cutting lines are opposite to the breakpoints of the annular tearing lines.

[0030] The release coating is wax, varnish or silicone oil.

[0031] The sealing layer is hot melt adhesive; the material of the hot melt adhesive is one of PE, PP, EMAC, EMAA, EEA, EAA, EBA and EMMA.

[0032] The sealing layer comprises a sealing film and an adhesive; the sealing film is at least one of a PE film, a PP film, a PA film, a PVDC film, an EVOH film and a PET film; and the adhesive is arranged between the sealing film and the electromagnetic induction heating layer.

[0033] After adopting the above scheme, after the ring-pull sealing gasket of the present invention is used to seal the bottle mouth of the container, if the user needs to open the bottle mouth of the container, the user first opens the bottle cap of the container, and then the user directly pulls the lifting part of the functional layer upward by hand, and the lifting part then drives the connecting tear line and the annular tear line to disconnect, so that the area inside the annular tear line in the ring-pull sealing gasket of the present invention will be torn and detached, so that the ring-pull sealing gasket of the present invention will leave a circle of annular body bonded to the bottle mouth of the container, and the bottle mouth of the container is opened at this time; it can be seen from the above that the present invention does not require the aid of tools in the entire process of opening the bottle mouth of the container, which is very convenient; and when the user locks the bottle cap of the container again, the bottle cap will press the annular body remaining in the bottle mouth of the container, so that the present invention still has a good sealing effect when it is pressed and sealed again.

[0034] In addition, the electromagnetic induction heating sheet of the present invention can integrate the dual functions of electromagnetic induction heating and information interaction, which is convenient for product anti-counterfeiting and traceability, and convenient for the automated, digital and intelligent management of factories, warehouses, logistics, stores and unmanned cashier management. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a cross-sectional view of the first embodiment of the present invention.

[0036] Figure 2 It is a top view of the first embodiment of the present invention.

[0037] Figure 3 It is a cross-sectional view of the second embodiment of the present invention.

[0038] Figure 4It is a top view of the second embodiment of the present invention.

[0039] Figure 5 It is a cross-sectional view of embodiment 3 of the present invention.

[0040] Figure 6 It is a top view of the third embodiment of the present invention.

[0041] Figure 7 It is a cross-sectional view of embodiment 4 of the present invention.

[0042] Figure 8 It is a cross-sectional view of embodiment 5 of the present invention.

[0043] Fig. 9 It is a cross-sectional view of embodiment 6 of the present invention.

[0044] Fig.10 It is a cross-sectional view of embodiment 7 of the present invention.

[0045] Fig.11 It is a cross-sectional view of a first embodiment of the electromagnetic induction heating sheet of the present invention.

[0046] Fig.12 This is a schematic diagram of the coordination between the metal layer and the wireless information chip of the first embodiment of the electromagnetic induction heating sheet of the present invention.

[0047] Fig.13 It is a top view of a first embodiment of the electromagnetic induction heating sheet of the present invention.

[0048] Fig.14 It is a cross-sectional view of a second embodiment of the electromagnetic induction heating sheet of the present invention.

[0049] Fig.15 It is a cross-sectional view of a third embodiment of the electromagnetic induction heating sheet of the present invention.

[0050] Fig.16 It is a cross-sectional view of a fourth embodiment of the electromagnetic induction heating sheet of the present invention.

[0051] Fig.17 This is a schematic diagram of the coordination between the metal layer and the wireless information chip of the fifth embodiment of the electromagnetic induction heating sheet of the present invention.

[0052] Description of labels: Functional layer 1, annular tear line 11, outer ring area 12, inner ring area 13, lifting neck 131, lifting part 132, hollow area 133, first hollow sub-area 1331, second hollow sub-area 1332, third hollow sub-area 1333, fourth hollow sub-area 1334, connecting tear line 134, pulling strip 135, adhesive layer 2, adhesive 3, release block 4, electromagnetic induction heating sheet A, base layer A1, multi-purpose component A2, metal layer A 21. Antenna A211, antenna body A2110, arc-shaped antenna strip A2111, connecting strip A2112, electromagnetic induction heating unit A212, physical connecting bridge A213, wireless information chip A22, battery A23, packaging glue A24, circular cutting line A25, protective layer A3, first adhesive layer A4, second adhesive layer A5, sealing layer B, facial mask C, foam film D, foam board film E, composite film F, connecting film G, adhesive H. DETAILED DESCRIPTION

[0053] Cooperate Figures 1 to 17 As shown, the present invention discloses a ring-pull sealing gasket, which includes a functional layer 1 and an adhesive layer 2; wherein one of the functional layer 1 and the adhesive layer 2 is provided with an electromagnetic induction heating sheet A, and the adhesive layer 2 has an adhesive sealing layer B at the bottom; the bottom surface of the functional layer 1 and the top surface of the adhesive layer 2 are strongly bonded and compounded by an adhesive 3, and one of the bottom surface of the functional layer 1 and the top surface of the adhesive layer 2 is directly coated with a release block 4 composed of a release coating; the functional layer 1 is provided with an annular tear line 11, and the annular tear line 11 divides the functional layer 1 into an outer ring area 12 and an inner ring area 13, the inner ring area 13 includes a lifting neck 131 connected to the outer ring area 12, a lifting portion 132 connected to the lifting neck 131, and a hollow area 133 between the lifting portion 132 and the lifting neck 131; the functional layer 1 is also provided with a connecting tear line 134 connecting one side of the lifting portion 132 and the annular tear line 11; the release block 4 is opposite to the lifting portion 132, and the release block 4 is used to ensure that the lifting portion 132 will not be strongly adhered to the adhesive layer 2, so that the lifting portion 132 can be easily lifted, and the release coating can be wax, varnish or silicone oil.

[0054] When the ring-pull sealing gasket of the present invention is used to seal the mouth of a container, the electromagnetic induction heating sheet A is heated by electromagnetic induction, thereby melting the adhesive layer B; after the adhesive layer B is cooled, the adhesive layer B is bonded to the mouth of the container to seal the mouth of the container.

[0055] When the user needs to open the mouth of the container, the user first opens the bottle cap of the container, and then the user directly pulls the lifting portion 132 of the functional layer 1 upwards by hand, and the lifting portion 132 then drives the connecting tear line 134 and the annular tear line 11 to be disconnected, so that the area inside the annular tear line 11 of the ring-pull sealing gasket of the present invention will be torn and detached, so that the ring-pull sealing gasket of the present invention will leave a circle of annular body bonded to the mouth of the container, and the mouth of the container is opened at this time; it can be seen from the above that the present invention does not require the aid of tools in the entire process of opening the mouth of the container, which is very convenient; and when the user locks the bottle cap of the container again, the bottle cap will press the annular body remaining at the mouth of the container, so that the present invention still has a good sealing effect when it is pressed and sealed again.

[0056] In the present invention, the annular tear line 11 and the connecting tear line 134 of the functional layer 1 can adopt a continuous cutting line with multiple breakpoints, and the part of the functional layer 1 corresponding to the part of the continuous cutting line except the breakpoints is completely cut, and the part of the functional layer 1 corresponding to the breakpoints of the continuous cutting line is not completely cut in the vertical direction to ensure the structural stability of the functional layer 1; of course, it is also possible that the part of the functional layer 1 corresponding to the breakpoint of the continuous cutting line is not cut and the length of the breakpoint is 0.02mm to 0.9mm, which can also ensure the structural stability of the functional layer 1; the continuous cutting line can make the lifting part 132 drive the connecting tear line 134 and the annular tear line 11 to be effectively disconnected when the user lifts the lifting part 132. The annular tear line 11 and the connecting tear line 134 are formed by cutting in a continuous arrangement of a cutting knife (that is, they are cut once by a cutting knife), and the cutting knife has an integrated blade corresponding to the annular tear line 11 and the connecting tear line 134.

[0057] In order to further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments.

[0058] Embodiment 1: Cooperate Figure 1 and Figure 2As shown, in Embodiment 1 of the present invention, the functional layer 1 includes a facial mask C, a foaming film D, a foaming board film E, a composite film F, a foaming film D and a connecting film G which are compounded in sequence from top to bottom; and the adhesive layer 2 includes an electromagnetic induction heating sheet A and a sealing layer B which are compounded in sequence from top to bottom, and the sealing layer B adopts a sealing film; the top surface of the electromagnetic induction heating sheet A is directly coated with a release block 4 composed of a release coating. Among them, the adhesive 3 makes the peel strength between the functional layer 1 and the adhesive layer 2 greater than 12N / 15mm. The adhesive 3 can be a dry composite adhesive or a hot-melt adhesive. The material of the hot-melt adhesive can be one of PE, PP, EMAC, EEA, EMAA, EAA and EMMA; the facial mask C, foam film D, foam board film E, composite film F, foam film D and connecting film G can be composited with each other through the adhesive H, and the peel strength between the facial mask C, foam film D, foam board film E, composite film F, foam film D and connecting film G is greater than 5N / 15mm; the electromagnetic induction heating sheet A and the sealing film can be composited with the adhesive H, and the peel strength between the electromagnetic induction heating sheet A and the sealing film is greater than 4N / 15mm.

[0059] In Embodiment 1 of the present invention, the mask C is at least one of a PI layer, a PEN layer, a PET layer, a PE layer, a PA layer and a PP layer, and the thickness of the mask C is 12 μm to 150 μm; the foaming film D is an EPE layer or an EPP layer, and the thickness of the foaming film D is 60 μm to 300 μm, and the foaming rate of the foaming film D is low, but the composite effect with the mask C is good; the foaming plate film E is an EPE layer or an EPP layer, and the thickness of the foaming plate film E is 0.6 mm to 3 mm or the thickness of the foaming plate film E is 10 μm to 2 mm, and the foaming plate film E plays a thickening role; the composite film F is at least one of a PEN layer, a PET layer, a PP layer, a PA layer and a PE layer, and the thickness of the composite film F is 12 μm to 150μm; the connecting film G is at least one of a PET layer, an EPE layer, an EPP layer, a PP layer, a PA layer and a PE layer, and the thickness of the connecting film G is 12μm~200μm; the adhesive sealing film is at least one of a PE layer, a PP layer, a PA layer, a PVDC layer, an EVOH layer and a PET layer, and the sealing ring is adhered to the bottle mouth after electromagnetic induction sealing, and the thickness of the adhesive sealing film is 12μm~100μm; the thickness of the electromagnetic induction heating sheet A is 10μm~2.5mm, the electromagnetic induction heating sheet A can be made of aluminum foil, the thickness of the aluminum foil is 10μm~40μm, and the electromagnetic induction heating sheet A can also be a wireless information integrated sheet, and the thickness of the wireless information integrated sheet is 27μm~2.5mm. It should be noted that the sealing layer B is not limited to the use of sealing film; the sealing layer B can also directly use hot melt adhesive, and the material of the hot melt adhesive is one of PE, PP, EMAC, EMAA, EEA, EAA, EBA and EMMA, which can make the sealing ring adhere to the bottle mouth after electromagnetic induction sealing. The thickness of the hot melt adhesive is 4μm~100μm, and the hot melt adhesive does not need to be used with the help of adhesive H when compounding with other film layers.

[0060] In embodiment 1 of the present invention, the coating area of ​​the release block 4 is larger than the area where the lifting portion 132 and the hollow area 133 are located. In this way, when the functional layer 1 is compounded with the adhesive layer 2 and then the portion of the functional layer 1 in the hollow area 133 is cut off, it can be ensured that the portion of the functional layer 1 in the hollow area 133 can be easily fallen off, and it can be ensured that the lifting portion 132 is not easily adhered to the adhesive layer 2 below, so that the lifting portion 132 can be easily lifted up.

[0061] Cooperate Figure 2As shown, in embodiment 1 of the present invention, the annular tear line 11 is equivalent to the line connected by points ijklmi; the connecting tear line 134 is equivalent to the line connected by points aghi; and the hollow area 133 refers to the area surrounded by points abcdefga, and the hollow area 133 is formed by cutting the cut segment formed by points abcdefga; the lifting portion 132 is equivalent to the circular area surrounded by points abcda; the lifting portion 132 and the hollow area 133 are located in the non-central area of ​​the functional layer 1.

[0062] The following provides a method for manufacturing a ring-pull sealing gasket according to the first embodiment of the present invention.

[0063] First, apply adhesive H to the facial mask roll and dry-compound it with the foam film roll, and send them together into a maturing room for more than 24 hours to make the first composite roll; Secondly, the adhesive H is applied to the foam film surface of the first composite part roll and dry-compounded with the foam board film roll, and sent together into the aging room for more than 24 hours to make the surface composite part roll; Then, the adhesive H is applied to the foamed sheet film surface of the composite part roll and dry-compounded with the composite film roll, and sent to the aging room for more than 24 hours to make the second composite part roll; Next, the adhesive H is applied to the composite film surface of the second composite part roll and dry-compounded with the foam film roll, and the rolls are sent to a aging chamber for more than 24 hours to produce the third composite part roll; Next, the adhesive H is applied to the foamed board film surface of the third composite part roll and dry-compounded with the connecting film roll, and sent together to the aging room for more than 24 hours to make the functional layer roll; Next, the adhesive H is applied to the lower surface of the electromagnetic induction heating sheet coil and dry-compounded with the adhesive sealing film coil, and sent to the aging chamber for more than 24 hours to make the fourth composite coil; or, hot melt adhesive is applied to the lower surface of the electromagnetic induction heating sheet coil to make the fourth composite coil; Next, a release block is applied to the electromagnetic induction heating sheet of the fourth composite part coil to produce a lower composite part coil; Next, the adhesive H is applied to the connecting film surface of the functional layer coil and dry-compounded with the bottom surface of the electromagnetic induction heating sheet of the lower composite part coil, and sent to a maturing chamber for more than 24 hours to make a ring-pull type sealing gasket blank; Next, the ring-pull type sealing gasket blank is cut into a ring-shaped tear line 11, a lifting neck 131, a lifting part 132, a hollow area 133 and a connecting tear line 134; Finally, the ring-pull sealing gasket roll is cut to produce the ring-pull sealing gasket.

[0064] Embodiment 2: Cooperate Figure 3 and Figure 4 As shown, in the second embodiment of the present invention, the functional layer 1 includes a mask C, a composite film F and a connecting film G which are compounded from top to bottom in sequence; and the adhesive layer 2 includes the electromagnetic induction heating sheet A and the sealing layer B which are compounded from top to bottom in sequence, and the sealing layer B adopts a sealing film; the top surface of the electromagnetic induction heating sheet A is directly coated with a release block 4 composed of a release coating. Among them, the adhesive 3 makes the peeling strength between the functional layer 1 and the adhesive layer 2 greater than 12N / 15mm, and the adhesive 3 can be a dry composite adhesive or a hot melt adhesive, and the material of the hot melt adhesive can be one of PE, PP, EMAC, EEA, EMAA, EAA and EMMA; the mask C, the composite film F and the connecting film G can be compounded by the adhesive H, and the peeling strength between the mask C, the composite film F and the connecting film G is greater than 5N / 15mm; the electromagnetic induction heating sheet A and the sealing film can also be compounded by the adhesive H, and the peeling strength between the electromagnetic induction heating sheet A and the sealing film is greater than 4N / 15mm.

[0065] In embodiment 2 of the present invention, the mask C is at least one of a PI layer, a PEN layer, a PET layer, a PE layer, a PA layer and a PP layer, and the thickness of the mask C is 12 μm to 150 μm; the composite film F is at least one of a PEN layer, a PET layer, a PP layer, a PA layer and a PE layer, and the thickness of the composite film F is 12 μm to 150 μm; the connecting film G is at least one of a PET layer, an EPE layer, an EPP layer, a PP layer, a PA layer and a PE layer, and the thickness of the connecting film G is 12 μm to 200 μm; the sealing film is at least one of a PE layer, a PP layer, a PA layer, a PVDC layer, an EVOH layer and a PET layer, and the sealing ring is adhered to the bottle mouth after electromagnetic induction sealing, and the thickness of the sealing film is 12 μm to 100 μm; the thickness of the electromagnetic induction heating sheet A is 10 μm to 2.5 mm. It should be noted that the sealing layer B is not limited to the use of sealing film; the sealing layer B can also directly use hot melt adhesive, and the material of the hot melt adhesive is one of PE, PP, EMAC, EMAA, EEA, EAA, EBA and EMMA, which can make the sealing ring adhere to the bottle mouth after electromagnetic induction sealing. The thickness of the hot melt adhesive is 4μm~100μm, and the hot melt adhesive does not need to be used with the help of adhesive H when compounding with other film layers.

[0066] In the second embodiment of the present invention, the coating area of ​​the release block 4 is larger than the area where the lifting portion 132 and the hollow area 133 are located. In this way, when the functional layer 1 is compounded with the adhesive layer 2 and then the portion of the functional layer 1 in the hollow area 133 is cut off, it can be ensured that the portion of the functional layer 1 in the hollow area 133 can be easily fallen off, and it can be ensured that the lifting portion 132 is not easily adhered to the adhesive layer 2 below, so that the lifting portion 132 can be easily lifted up.

[0067] Cooperate Figure 4 As shown, in embodiment 2 of the present invention, the annular tear line 11 is equivalent to the line connected by points ijklmi; the connecting tear line 134 is equivalent to the line connected by points aghi; and the hollow area 133 refers to the area surrounded by points abcdefga, and the hollow area 133 is formed by cutting the cut segment formed by points abcdefga; the lifting portion 132 is equivalent to the circular area surrounded by points abcda; the lifting portion 132 and the hollow area 133 are located in the central area of ​​the functional layer 1.

[0068] Embodiment three: Cooperate Figure 5 and Figure 6 As shown, in the third embodiment of the present invention, the functional layer 1 includes the mask C and the connecting film G compounded from top to bottom; and the adhesive layer 2 includes the electromagnetic induction heating sheet A and the sealing layer B compounded from top to bottom, and the sealing layer B adopts a sealing film; the top surface of the electromagnetic induction heating sheet A is directly coated with a release block 4 composed of a release coating. Among them, the adhesive 3 makes the peeling strength between the functional layer 1 and the adhesive layer 2 greater than 12N / 15mm, and the adhesive 3 can be a dry composite adhesive or a hot melt adhesive, and the material of the hot melt adhesive can be one of PE, PP, EMAC, EEA, EMAA, EAA and EMMA; the mask C and the connecting film G can be compounded by the adhesive H, and the peeling strength between the mask C and the connecting film G is greater than 5N / 15mm; the electromagnetic induction heating sheet A and the sealing film; can also be compounded by the adhesive H, and the peeling strength between the electromagnetic induction heating sheet A and the sealing film is greater than 4N / 15mm. In embodiment three of the present invention, the mask C is at least one of a PI layer, a PEN layer, a PET layer, a PE layer, a PA layer and a PP layer, and the thickness of the mask C is 12μm~150μm; the connecting film G is at least one of a PET layer, an EPE layer, an EPP layer, a PP layer, a PA layer and a PE layer, and the thickness of the connecting film G is 12μm~200μm; the sealing film is at least one of a PE layer, a PP layer, a PA layer, a PVDC layer, an EVOH layer and a PET layer, and the sealing ring is adhered to the bottle mouth after electromagnetic induction sealing, and the thickness of the sealing film is 12μm~100μm; the thickness of the electromagnetic induction heating sheet A is 10μm~2.5mm. It should be noted that the sealing layer B is not limited to the use of sealing film; the sealing layer B can also directly use hot melt adhesive, and the material of the hot melt adhesive is one of PE, PP, EMAC, EMAA, EEA, EAA, EBA and EMMA, which can make the sealing ring adhere to the bottle mouth after electromagnetic induction sealing. The thickness of the hot melt adhesive is 4μm~100μm, and the hot melt adhesive does not need to be used with the help of adhesive H when compounding with other film layers.

[0069] In embodiment three of the present invention, the coating area of ​​the release block 4 is larger than the area where the lifting portion 132 and the hollow area 133 are located. In this way, when the functional layer 1 is compounded with the adhesive layer 2 and then the portion of the functional layer 1 in the hollow area 133 is cut off, it can be ensured that the portion of the functional layer 1 in the hollow area 133 can be easily fallen off, and it can be ensured that the lifting portion 132 is not easily adhered to the adhesive layer 2 below, so that the lifting portion 132 can be easily lifted up.

[0070] Cooperate Figure 6 As shown, in the third embodiment of the present invention, the annular tear line 11 is equivalent to the line connected by the points stuvt; the connecting tear line 134 is equivalent to the line connected by the points qrs; and the lifting portion 132 refers to the area surrounded by the points abcdefga; a pulling strip 135 connecting the lifting neck 131 and the lifting portion 132 is provided in the hollow area 133 to prevent the lifting portion 132 from tilting, and each pulling strip 135 divides the hollow area 133 into a first hollow sub-area 1331, a second hollow sub-area 1332, and a third hollow sub-area 1333. 1333 and the fourth hollow sub-area 1334, the first hollow sub-area 1331 is cut by the first cutting sub-line (equivalent to the line connected by the points fkjihgf), the second hollow sub-area 1332 is cut by the second cutting sub-line (equivalent to the line connected by the points elmde), the third hollow sub-area 1333 is cut by the third cutting sub-line (equivalent to the line connected by the points cnobc), and the fourth hollow sub-area 1334 is cut by the fourth cutting sub-line (equivalent to the line connected by the points apqa). The lifting portion 132 and the hollow area 133 are located in the central area of ​​the functional layer 1.

[0071] Embodiment 4: Cooperate Figure 7 As shown, the difference between the fourth embodiment of the present invention and the first to third embodiments is that the layer structures of the functional layer 1 and the adhesive layer 2 are different.

[0072] Specifically, in Embodiment 4 of the present invention, the functional layer 1 includes a facial mask C, a foaming film D, a foaming board film E, a composite film F, a foaming film D, an electromagnetic induction heating sheet A and a connecting film G which are compounded in sequence from top to bottom; and the adhesive layer 2 only includes a sealing layer B, and the sealing layer B adopts a sealing film; the bottom surface of the connecting film G is directly coated with a release block 4 composed of a release coating. Among them, the adhesive 3 makes the peel strength between the functional layer 1 and the adhesive layer 2 greater than 12N / 15mm. The adhesive 3 can be a dry composite adhesive or a hot-melt adhesive. The material of the hot-melt adhesive can be one of PE, PP, EMAC, EEA, EMAA, EAA and EMMA; the facial mask C, foam film D, foam board film E, composite film F, foam film D, electromagnetic induction heating sheet A and connecting film G can be composited with each other through the adhesive H, and the peel strength between the facial mask C, foam film D, foam board film E, composite film F, foam film D, electromagnetic induction heating sheet A and connecting film G is greater than 5N / 15mm.

[0073] In the fourth embodiment of the present invention, the mask C is at least one of a PI layer, a PEN layer, a PET layer, a PE layer, a PA layer and a PP layer, and the thickness of the mask C is 12 μm to 150 μm; the foaming film D is an EPE layer or an EPP layer, and the thickness of the foaming film D is 60 μm to 300 μm. The foaming rate of the foaming film D is low and the composite effect with the mask C is good; the foaming plate film E is an EPE layer or an EPP layer, and the thickness of the foaming plate film E is 0.6 mm to 3 mm, and the foaming plate film E plays a thickening role; the composite film F is a PEN layer, a PET layer, a PP layer, a P The composite film F is at least one of the A layer and the PE layer, and the thickness of the composite film F is 12μm~150μm; the connecting film G is at least one of the PET layer, the EPE layer, the EPP layer, the PP layer, the PA layer and the PE layer, and the thickness of the connecting film G is 12μm~200μm; the adhesive film is at least one of the PE layer, the PP layer, the PA layer, the PVDC layer, the EVOH layer and the PET layer, which makes the sealing ring adhere to the bottle mouth after electromagnetic induction sealing, and the thickness of the adhesive film is 12μm~100μm; the thickness of the electromagnetic induction heating sheet A is 10μm~2.5mm. It should be noted that the sealing layer B is not limited to the use of sealing film; the sealing layer B can also directly use hot melt adhesive, and the material of the hot melt adhesive is one of PE, PP, EMAC, EMAA, EEA, EAA, EBA and EMMA, which can make the sealing ring adhere to the bottle mouth after electromagnetic induction sealing. The thickness of the hot melt adhesive is 4μm~100μm, and the hot melt adhesive does not need to be used with the help of adhesive H when compounding with other film layers.

[0074] In the fourth embodiment of the present invention, the coating area of ​​the release block 4 is larger than the area where the lifting portion 132 is located. In this way, after the functional layer 1 is first cut off in the hollow area 133 and then compounded with the adhesive layer 2, it can be ensured that the lifting portion 132 is not easily adhered to the adhesive layer 2 below, and the lifting portion 132 can be easily lifted up.

[0075] Embodiment five: Cooperate Figure 8 As shown, the difference between the fifth embodiment of the present invention and the first to third embodiments is that the layer structures of the functional layer 1 and the adhesive layer 2 are different.

[0076] Specifically, in the fifth embodiment of the present invention, the functional layer 1 includes a mask C, an electromagnetic induction heating sheet A and a connecting film G which are compounded in sequence from top to bottom; and the adhesive layer 2 only includes a sealing layer B, and the sealing layer B adopts a sealing film; the bottom surface of the connecting film G is directly coated with a release block 4 composed of a release coating. Among them, the adhesive 3 makes the peeling strength between the functional layer 1 and the adhesive layer 2 greater than 12N / 15mm, and the adhesive 3 can be a dry composite adhesive or a hot melt adhesive, and the material of the hot melt adhesive can be one of PE, PP, EMAC, EEA, EMAA, EAA and EMMA; the mask C, the electromagnetic induction heating sheet A and the connecting film G can be compounded by the adhesive H, and the peeling strength between the mask C, the electromagnetic induction heating sheet A and the connecting film G is greater than 5N / 15mm.

[0077] In embodiment five of the present invention, the mask C is at least one of a PI layer, a PEN layer, a PET layer, a PE layer, a PA layer and a PP layer, and the thickness of the mask C is 12μm~150μm; the connecting film G is at least one of a PET layer, an EPE layer, an EPP layer, a PP layer, a PA layer and a PE layer, and the thickness of the connecting film G is 12μm~200μm; the sealing film is at least one of a PE layer, a PP layer, a PA layer, a PVDC layer, an EVOH layer and a PET layer, and the sealing ring is adhered to the bottle mouth after electromagnetic induction sealing, and the thickness of the sealing film is 12μm~100μm; the thickness of the electromagnetic induction heating sheet A is 10μm~2.5mm. It should be noted that the sealing layer B is not limited to the use of sealing film; the sealing layer B can also directly use hot melt adhesive, and the material of the hot melt adhesive is one of PE, PP, EMAC, EMAA, EEA, EAA, EBA and EMMA, which can make the sealing ring adhere to the bottle mouth after electromagnetic induction sealing. The thickness of the hot melt adhesive is 4μm~100μm, and the hot melt adhesive does not need to be used with the help of adhesive H when compounding with other film layers.

[0078] In embodiment five of the present invention, the coating area of ​​the release block 4 is larger than the area where the lifting portion 132 is located. In this way, after the functional layer 1 is first cut off in the hollow area 133 and then compounded with the adhesive layer 2, it can be ensured that the lifting portion 132 is not easily adhered to the adhesive layer 2 below, and the lifting portion 132 can be easily lifted up.

[0079] The following provides a method for manufacturing a ring-pull sealing gasket according to a fifth embodiment of the present invention.

[0080] First, the adhesive H is applied to the facial mask roll and dry-compounded with the connecting film roll, and the two are sent to a maturing chamber for more than 24 hours to produce a first composite roll.

[0081] Then, the adhesive H is applied to the electromagnetic induction heating sheet coil and dry-compounded with the connecting film coil of the first composite coil, and sent together to a maturing chamber for more than 24 hours to produce a functional layer coil; Next, a release block 4 is applied to the lower surface of the electromagnetic induction heating sheet coil of the functional layer coil, and then the functional layer coil is cut to form an annular tear line 11, a lifting neck 131, a lifting portion 132, a hollow area 133 and a connecting tear line 134; wherein the coating area of ​​the release block 4 is not smaller than the lifting portion 132; Next, the electromagnetic induction heating sheet coil of the functional layer coil is coated with adhesive 3 and dry-compounded with the adhesive sealing film coil, and the coil is sent to a curing chamber for more than 24 hours to make a ring-pull type sealing gasket coil; or, the lower surface of the electromagnetic induction heating sheet coil of the functional layer coil is coated with an adhesive sealing film with hot melt adhesive to make a ring-pull type sealing gasket coil; Finally, the ring-pull sealing gasket blank is cut to make the ring-pull sealing gasket.

[0082] Embodiment six: Cooperate Fig. 9As shown, in embodiment six of the present invention, the functional layer 1 includes a facial mask C, a foam board film E, a composite film F, a foam film D and a connecting film G which are compounded in sequence from top to bottom; and the adhesive layer 2 includes the electromagnetic induction heating sheet A and the sealing layer B which are compounded in sequence from top to bottom, and the sealing layer B adopts a sealing film; the bottom surface of the connecting film G is directly coated with a release block 4 composed of a release coating. Among them, the adhesive 3 makes the peel strength between the functional layer 1 and the adhesive layer 2 greater than 12N / 15mm. The adhesive 3 can be a dry composite adhesive or a hot-melt adhesive. The material of the hot-melt adhesive can be one of PE, PP, EMAC, EEA, EMAA, EAA and EMMA; the facial mask C, the foam board film E, the composite film F, the foam film D and the connecting film G can be composited with each other through the adhesive H, and the peel strength between the facial mask C, the foam board film E, the composite film F, the foam film D and the connecting film G is greater than 5N / 15mm; the electromagnetic induction heating sheet A and the sealing film can also be composited with the adhesive H, and the peel strength between the electromagnetic induction heating sheet A and the sealing film is greater than 4N / 15mm.

[0083] In the sixth embodiment of the present invention, the mask C is at least one of a PI layer, a PEN layer, a PET layer, a PE layer, a PA layer and a PP layer, and the thickness of the mask C is 12 μm to 150 μm; the foaming film D is an EPE layer or an EPP layer, and the thickness of the foaming film D is 60 μm to 300 μm, and the foaming rate of the foaming film D is low, but the composite effect with the mask C is good; the foaming plate film E is an EPE layer or an EPP layer, and the thickness of the foaming plate film E is 0.6 mm to 3 mm, and the foaming plate film E plays a role of thickening; the composite film F is a PEN layer, The composite film F is at least one of the PET layer, PP layer, PA layer and PE layer, and the thickness of the composite film F is 12μm~150μm; the connecting film G is at least one of the PET layer, EPE layer, EPP layer, PP layer, PA layer and PE layer, and the thickness of the connecting film G is 12μm~200μm; the sealing film is at least one of the PE layer, PP layer, PA layer, PVDC layer, EVOH layer and PET layer, and the thickness of the sealing film is 12μm~100μm; the thickness of the electromagnetic induction heating sheet A is 10μm~2.5mm. It should be noted that the sealing layer B is not limited to the sealing film; the sealing layer B can also directly use hot melt adhesive, the material of the hot melt adhesive is one of PE, PP, EMAC, EMAA, EEA, EAA, EBA and EMMA, the thickness of the hot melt adhesive is 4μm~100μm, and the hot melt adhesive does not need to be used with adhesive H when compounding with other film layers.

[0084] In embodiment six of the present invention, the coating area of ​​the release block 4 is larger than the area where the lifting portion 132 is located. In this way, after the functional layer 1 is first cut off in the hollow area 133 and then compounded with the adhesive layer 2, it can be ensured that the lifting portion 132 is not easily adhered to the adhesive layer 2 below, and the lifting portion 132 can be easily lifted up.

[0085] Embodiment seven: Cooperate Fig.10 As shown, in the seventh embodiment of the present invention, the functional layer 1 includes a mask C and a connecting film G compounded in sequence from top to bottom; and the adhesive layer 2 includes an electromagnetic induction heating sheet A and a sealing layer B compounded in sequence from top to bottom, and the sealing layer B adopts a sealing film; the bottom surface of the connecting film G is directly coated with a release block 4 composed of a release coating. Among them, the adhesive 3 makes the peeling strength between the functional layer 1 and the adhesive layer 2 greater than 12N / 15mm, and the adhesive 3 can be a dry composite adhesive or a hot melt adhesive, and the material of the hot melt adhesive can be one of PE, PP, EMAC, EEA, EMAA, EAA and EMMA; the mask C and the connecting film G can be compounded by the adhesive H, and the peeling strength between the mask C and the connecting film G is greater than 5N / 15mm; the electromagnetic induction heating sheet A and the sealing film can be compounded by the adhesive H, and the peeling strength between the electromagnetic induction heating sheet A and the sealing film is greater than 4N / 15mm.

[0086] In Embodiment 7 of the present invention, the facial mask C is at least one of a PI layer, a PEN layer, a PET layer, a PE layer, a PA layer and a PP layer, and the thickness of the facial mask C is 12 μm to 150 μm; the connecting film G is at least one of a PET layer, an EPE layer, an EPP layer, a PP layer, a PA layer and a PE layer, and the thickness of the connecting film G is 12 μm to 200 μm; the sealing film is at least one of a PE layer, a PP layer, a PA layer, a PVDC layer, an EVOH layer and a PET layer, and the thickness of the sealing film is 12 μm to 100 μm; the electromagnetic induction heating sheet A can be made of aluminum foil, and the thickness of the aluminum foil is 10 μm to 40 μm. It should be noted that the sealing layer B is not limited to the use of sealing film; the sealing layer B can also directly use hot melt adhesive, the material of the hot melt adhesive is one of PE, PP, EMAC, EMAA, EEA, EAA, EBA and EMMA, the thickness of the hot melt adhesive is 4μm~100μm, and the hot melt adhesive does not need to be compounded with other film layers with the aid of adhesive H.

[0087] In the seventh embodiment of the present invention, the coating area of ​​the release block 4 is larger than the area where the lifting portion 132 is located. In this way, after the functional layer 1 is first cut off in the hollow area 133 and then compounded with the adhesive layer 2, it can be ensured that the lifting portion 132 is not easily adhered to the adhesive layer 2 below, and the lifting portion 132 can be easily lifted up.

[0088] It should be noted that, for the above-mentioned Embodiment 1, Embodiment 2, Embodiment 3 and Embodiment 6, it is not limited to that the bottom surface of the electromagnetic induction heating plate A is directly coated with the release block 4 composed of the release coating. Embodiment 1, Embodiment 2, Embodiment 3 and Embodiment 8 can also adopt that the bottom surface of the connecting film G is directly coated with the release block 4 composed of the release coating.

[0089] To facilitate understanding of the present invention, several implementations of the electromagnetic induction heating sheet A of the present invention are specifically introduced below.

[0090] The first embodiment of the electromagnetic induction heating sheet A of the present invention: Cooperate Figures 11 to 13 As shown, in the first embodiment of the electromagnetic induction heating sheet A of the present invention, the electromagnetic induction heating sheet A of the present invention adopts a wireless information integrated sheet, which includes a base layer A1, a first adhesive layer A4 and a multi-purpose component A2, and the multi-purpose component A2 can realize electromagnetic induction heating function and information interaction function; wherein, the multi-purpose component A2 includes a metal layer A21 and a wireless information chip A22; the metal layer A21 is matched on the base layer A1 through the first adhesive layer A4, and the first adhesive layer A4 is sandwiched between the metal layer A21 and the base layer A1, the metal layer A21 has an antenna A211 and an electromagnetic induction heating part A212 arranged around the antenna A211, the electromagnetic induction heating part A212 and the antenna A211 can be separated from each other, and the distance between the outer side of the antenna A211 and the inner side of the electromagnetic induction heating part A212 is 0.1~3mm to ensure the isolation between the two. The present invention is configured in this way, so that less material is used for the metal layer A21, which helps to reduce costs; in addition, the wireless information chip A22 can wirelessly communicate with external equipment through the antenna A211 to realize the information exchange function, which can facilitate the storage and reading of production, logistics and other information, and facilitate anti-counterfeiting and traceability; and the electromagnetic induction heating part A212 is used to generate heat by electromagnetic induction to bond the sealing layer B to the bottle mouth of the container, and the electromagnetic induction heating part A212 is arranged around the antenna A211, so that the electromagnetic induction heating part A212 has little obstruction to the antenna A211, so that the wireless information chip A22 There is very little interference from the electromagnetic induction heating part A212 during wireless communication, which ensures the wireless communication performance of the wireless information chip A22 and helps to improve the wireless communication distance of the wireless information chip A22; in addition, the electromagnetic induction heating part A212 is arranged around the antenna A211, so that when the electromagnetic induction heating part A212 generates heat by electromagnetic induction, it will only bond the periphery of the sealing layer B to the bottle mouth of the container, reducing the heated area of ​​the adhesive layer 2, avoiding excessive heating of the adhesive layer 2 and generating some odorous gases, thereby avoiding the odorous gases from infiltrating into the contents of the container and causing discomfort to people, and at the same time, the heating area is small and the energy consumption is low.

[0091] In a first embodiment of the electromagnetic induction heating sheet A of the present invention, the thickness of the electromagnetic induction heating sheet A may be 27 to 300 µm; the thickness of the multi-purpose component A2 is 6 to 300 µm.

[0092] In the first embodiment of the electromagnetic induction heating sheet A of the present invention, the antenna A211 includes two symmetrically arranged antenna bodies A2110, and the antenna body A2110 includes a plurality of antenna strips A2111 bent in the same direction and a connecting strip A2112 connecting the antenna strips A2111; such an arrangement can make the antenna A211 have a strong signal receiving and sending capability. The connecting strips A2112 of the two antenna bodies A2110 are used to connect to the wireless information chip A22.

[0093] In a first embodiment of the electromagnetic induction heating sheet A of the present invention, the first adhesive layer A4 is a composite adhesive, the thickness of the first adhesive layer A4 is 0.5-7µm, and the first adhesive layer A4 makes the peel strength between the base layer A1 and the metal layer A21 greater than 4N / 15mm.

[0094] In a first embodiment of the electromagnetic induction heating sheet A of the present invention, the material of the metal layer A21 can be aluminum, copper, gold, silver or tin; the base layer A1 is at least one of a PE layer, a PET layer, a PEN layer, a PC layer, a PI layer and a PP layer, and the thickness of the metal layer A21 is 6~40µm; and the wireless information chip A22 has a unique identification code, and the wireless information chip A22 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.

[0095] In a first embodiment of the electromagnetic induction heating sheet A coil of the present invention, the electromagnetic induction heating sheet coil adopts a wireless information integrated sheet coil, and the production method of the electromagnetic induction heating sheet coil comprises the following steps: Step S1: Compounding the composite surface of the base layer coil and the composite surface of the metal foil coil via the first adhesive layer A4 to obtain a coil of electromagnetic induction heating sheet blank; Step S2: etching the metal foil of the first coil of the electromagnetic induction heating sheet blank material, so that the metal foil forms a metal layer A21, and the metal layer A21 has an antenna A211 and an electromagnetic induction heating portion A212 arranged around the antenna A211, so as to obtain a second coil of the electromagnetic induction heating sheet blank material; Step S3: Connect the wireless information chip A22 and the antenna A211 of the metal layer A21 of the second coil of the electromagnetic induction heating sheet blank, and protect the wireless information chip A22 by applying glue, so as to obtain the electromagnetic induction heating sheet coil; wherein, the wireless information chip A22 and the antenna A211 of the metal layer A21 are bonded and connected by a bonding machine, and after the wireless information chip A22 and the antenna A211 of the metal layer A21 are bonded, the wireless information chip A22 and the bonding line connecting the wireless information chip A22 and the antenna A211 are protected by applying glue by the packaging glue A24.

[0096] The second embodiment of the electromagnetic induction heating sheet A of the present invention: Cooperate Fig.14 As shown, the difference between the second embodiment of the electromagnetic induction heating sheet A of the present invention and the first embodiment of the electromagnetic induction heating sheet A of the present invention is that: in the second embodiment of the electromagnetic induction heating sheet A of the present invention, the electromagnetic induction heating sheet A also adopts a wireless information integrated sheet, and the multi-purpose component A2 of the wireless information integrated sheet also includes a battery A23, and the battery A23 is electrically connected to the wireless information chip A22. The battery A23 can stably supply power to the wireless information chip A22, thereby improving the working stability of the wireless information chip A22; wherein, the battery A23 can provide timed power supply to the wireless information chip A22 according to the rules preset by the built-in software or the instructions transmitted by the external reader / writer, so that the wireless information chip A22 works regularly and performs timed recording of working parameters (such as temperature parameters, position parameters), thereby facilitating the effective management and control of logistics (such as cold chain logistics).

[0097] In the second embodiment of the electromagnetic induction heating sheet A of the present invention, the thickness of the electromagnetic induction heating sheet A may be 40µm to 2.5mm; the thickness of the multi-purpose component A2 is 6µm to 2.5mm.

[0098] In a second embodiment of the electromagnetic induction heating sheet A of the present invention, the electromagnetic induction heating sheet coil is a wireless information integrated sheet coil, and the production method of the electromagnetic induction heating sheet A comprises the following steps: Step S1: Compounding the composite surface of the base layer coil and the composite surface of the metal foil coil via the first adhesive layer A4 to obtain a coil of electromagnetic induction heating sheet blank; Step S2: etching the metal foil of the first coil of the electromagnetic induction heating sheet blank material, so that the metal foil forms a metal layer A21, and the metal layer A21 has an antenna A211 and an electromagnetic induction heating portion A212 arranged around the antenna A211, so as to obtain a second coil of the electromagnetic induction heating sheet blank material; Step S3: Connect the wireless information chip A22 and the antenna A211 of the metal layer A21 of the second coil of the electromagnetic induction heating sheet blank material, then electrically connect the battery A23 and the wireless information chip A22, and perform glue protection on the wireless information chip A22, thereby obtaining an electromagnetic induction heating sheet coil; wherein, the wireless information chip A22 and the antenna A211 of the metal layer A21 are bonded and connected by a bonding machine, and after the wireless information chip A22 and the antenna A211 of the metal layer A21 are bonded, the wireless information chip A22 and the bonding line connecting the wireless information chip A22 and the antenna A211 are glue protected by packaging glue A24.

[0099] The third embodiment of the electromagnetic induction heating sheet A of the present invention: Cooperate Fig.15 As shown, the main difference between the third embodiment of the electromagnetic induction heating sheet A of the present invention and the first embodiment of the electromagnetic induction heating sheet A of the present invention is that: in the third embodiment of the electromagnetic induction heating sheet A of the present invention, the electromagnetic induction heating sheet A also adopts a wireless information integrated sheet, and the wireless information integrated sheet also includes a protective layer A3 and a second adhesive layer A5, and the protective layer A3 is compounded with the base layer A1 and the multi-purpose component A2 through the second adhesive layer A5, and the protective layer A3 completely covers the multi-purpose component A2, and the protective layer A3 can effectively protect the multi-purpose component A2, so that the electromagnetic induction heating sheet A of the present invention will not have the problem of damage to the multi-purpose component A2 during transportation and manufacturing of the electromagnetic induction sealing gasket. The protective layer A3 can be at least one of a PE layer, a PET layer, a PEN layer, a PA layer, a PVDC layer, an EVOH layer, a PI layer and a PP layer, and the thickness of the protective layer A3 can be 12~100µm.

[0100] In the third embodiment of the electromagnetic induction heating sheet A of the present invention, the second adhesive layer A5 is a composite adhesive, the thickness of the second adhesive layer A5 is 0.5~7µm, and the second adhesive layer A5 makes the peel strength between the protective layer A3 and the multi-purpose component A2 greater than 4N / 15mm.

[0101] In the third embodiment of the electromagnetic induction heating sheet A of the present invention, the thickness of the electromagnetic induction heating sheet A may be 39 µm to 2.5 mm; the thickness of the multi-purpose component A2 is 6 to 300 µm.

[0102] In a third embodiment of the electromagnetic induction heating sheet A of the present invention, the electromagnetic induction heating sheet coil is a wireless information integrated sheet coil, and the production method of the electromagnetic induction heating sheet A comprises the following steps: Step 1: Compounding the composite surface of the base layer coil and the composite surface of the metal foil coil through the first adhesive layer A4 to obtain an electromagnetic induction heating sheet blank coil; Step 2: Etching the metal foil of the first coil of the electromagnetic induction heating sheet blank material to form a metal layer A21 of the metal foil, wherein the metal layer A21 has an antenna A211 and an electromagnetic induction heating portion A212 disposed around the antenna A211, so as to obtain a second coil of the electromagnetic induction heating sheet blank material; Step three: Connect the wireless information chip A22 and the antenna A211 of the metal layer A21 of the second coil of the electromagnetic induction heating sheet blank material, and perform glue protection on the wireless information chip A22, thereby obtaining a third coil of the electromagnetic induction heating sheet blank material; the wireless information chip A22 and the antenna A211 of the metal layer A21 can be bonded and connected by a bonding machine, and after the wireless information chip A22 and the antenna A211 of the metal layer A21 are bonded, the wireless information chip A22 and the bonding line connecting the wireless information chip A22 and the antenna A211 are glued and protected by the packaging glue A24; Step 4: Compound the composite surface of the protective layer coil and the electromagnetic induction heating sheet blank coil on the side opposite to the base layer A1 through the second adhesive layer A5, so as to obtain the electromagnetic induction heating sheet coil.

[0103] The fourth embodiment of the electromagnetic induction heating sheet A of the present invention: Cooperate Fig.16 As shown, the difference between the fourth embodiment of the electromagnetic induction heating sheet A of the present invention and the first embodiment of the electromagnetic induction heating sheet A of the present invention is that in the fourth embodiment of the electromagnetic induction heating sheet A of the present invention, the electromagnetic induction heating sheet A also adopts a wireless information integrated sheet, and the wireless information integrated sheet also includes a protective layer A3 and a second adhesive layer A5, and the protective layer A3 is compounded with the base layer A1 and the multi-purpose component A2 through the second adhesive layer A5, and the protective layer A3 completely covers the multi-purpose component A2, and the protective layer A3 can effectively protect the multi-purpose component A2, so that the electromagnetic induction heating sheet A of the present invention will not have the problem of damage to the multi-purpose component A2 during transportation and manufacturing of the electromagnetic induction sealing gasket. The protective layer A3 may be at least one of a PE layer, a PET layer, a PEN layer, a PA layer, a PVDC layer, an EVOH layer, a PI layer and a PP layer, and the thickness of the protective layer A3 may be 12~100µm; the multi-purpose component A2 also includes a battery A23, and the battery A23 is electrically connected to the wireless information chip A22. The thickness of the battery A23 may be greater than or less than the thickness of the antenna A211 depending on the material of the battery A23, application requirements and the allowable space between the container and the lid. The battery A23 can stably supply power to the wireless information chip A22, thereby improving the working stability of the wireless information chip A22; wherein, the battery A23 can provide timed power supply to the wireless information chip A22 according to the rules preset by the built-in software or the instructions transmitted by the external reader / writer, so that the wireless information chip A22 works regularly and performs timed recording of working parameters (such as temperature parameters and position parameters), thereby facilitating effective management and control of logistics (such as cold chain logistics).

[0104] In the fourth embodiment of the electromagnetic induction heating sheet A of the present invention, the thickness of the electromagnetic induction heating sheet A may be 50µm to 2.5mm; the thickness of the multi-purpose component A2 is 6µm to 2.5mm.

[0105] In a fourth embodiment of the electromagnetic induction heating sheet A of the present invention, the electromagnetic induction heating sheet coil is a wireless information integrated sheet coil, and the production method of the electromagnetic induction heating sheet A comprises the following steps: Step 1: Compounding the composite surface of the base layer coil and the composite surface of the metal foil coil through the first adhesive layer A4 to obtain an electromagnetic induction heating sheet blank coil; Step 2: Etching the metal foil of the first coil of the electromagnetic induction heating sheet blank material to form a metal layer A21 of the metal foil, wherein the metal layer A21 has an antenna A211 and an electromagnetic induction heating portion A212 disposed around the antenna A211, so as to obtain a second coil of the electromagnetic induction heating sheet blank material; Step three: connect the wireless information chip A22 of the second roll of the electromagnetic induction heating sheet blank material to the antenna A211 of the metal layer A21, electrically connect the battery A23 to the wireless information chip A22, and perform glue protection on the wireless information chip A22, thereby obtaining the third roll of the electromagnetic induction heating sheet blank material; wherein the wireless information chip A22 and the antenna A211 of the metal layer A21 can be bonded and connected by a bonding machine, and after the wireless information chip A22 and the antenna A211 of the metal layer A21 are bonded, the wireless information chip A22 and the bonding line connecting the wireless information chip A22 and the antenna A211 are glued and protected by the packaging glue A24; Step 4: Compound the composite surface of the protective layer coil and the electromagnetic induction heating sheet blank coil on the side opposite to the base layer A1 through the second adhesive layer A5, so as to obtain the electromagnetic induction heating sheet coil.

[0106] The fifth embodiment of the electromagnetic induction heating sheet A of the present invention: Cooperate Fig.17As shown, the difference between the fifth embodiment of the electromagnetic induction heating sheet A of the present invention and the first to fourth embodiments of the electromagnetic induction heating sheet A of the present invention is that in the fifth embodiment of the electromagnetic induction heating sheet A of the present invention, the electromagnetic induction heating sheet A also adopts a wireless information integrated sheet, and the electromagnetic induction heating portion A212 of the metal layer A21 of the wireless information integrated sheet is separated from the antenna A211, and the interval between the electromagnetic induction heating portion A212 of the metal layer A21 and the antenna A211 is 0.1 mm~3 mm, the metal layer A21 also includes at least one physical connection bridge A213 connecting the antenna A211 and the electromagnetic induction heating part A212, the physical connection bridge A213 can improve the stability of the metal layer A21, the antenna A211, the electromagnetic induction heating part A212 and the physical connection bridge A213 of the metal layer A21 can be integrated, the material of the physical connection bridge A213 is aluminum, copper, gold, silver or tin, the length of the physical connection bridge A213 is 0.1mm~3mm, and the width of the physical connection bridge is 0.01mm~5mm. Among them, due to the small size of the physical connection bridge A213, it can block most of the heat from the electromagnetic induction heating part A212 from being transferred to the antenna A211, and only slightly reduce the distance of wireless communication.

[0107] It should be noted that, in the above-mentioned five embodiments of the electromagnetic induction heating sheet A, the electromagnetic induction heating sheet A has a circle of annular tangent line A25, the annular tangent line A25 is located between the antenna A211 and the electromagnetic induction heating portion A212 and surrounds the antenna A211, and the annular tangent line A25 is opposite to the annular tear line 11; the setting of the annular tangent line A25 is used to enable the lifting portion 132 to drive the electromagnetic induction heating sheet A to be torn along the annular tangent line A25 when the user pulls the lifting portion 132. Specifically, the circular cutting line A25 has multiple breakpoints, the part of the electromagnetic induction heating sheet A corresponding to the breakpoints of the circular cutting line A25 is not cut and the length of the breakpoints is 0.02mm to 0.9mm, the part of the electromagnetic induction heating sheet A corresponding to the part other than the breakpoints of the circular cutting line A25 is completely cut, and the breakpoints of the circular cutting line A25 are opposite to the breakpoints of the annular tearing line 11, so that the structural stability of the electromagnetic induction heating sheet A can be ensured. The circular cutting line A25 can be formed by cutting in a continuous arrangement manner with a cutting knife (that is, it is cut once by a cutting knife), and the cutting knife has an integrated blade corresponding to the circular cutting line A25.

[0108] The electromagnetic induction heating sheet A is not limited to the above four implementation modes of the electromagnetic induction heating sheet A; the electromagnetic induction heating sheet A may also adopt the existing commonly used aluminum foil, so that the electromagnetic induction heating sheet A only has the electromagnetic induction heating function.

[0109] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

1. A ring-pull sealing gasket, characterized in that: It comprises a functional layer and an adhesive layer; one of the functional layer and the adhesive layer is provided with an electromagnetic induction heating sheet, and the adhesive layer has an adhesive sealing layer at the lowest side; The bottom surface of the functional layer and the top surface of the adhesive layer are strongly bonded and laminated by an adhesive, and one of the bottom surface of the functional layer and the top surface of the adhesive layer is directly coated with a release block composed of a release coating; The functional layer is provided with an annular tearing line, which divides the functional layer into an outer ring area and an inner ring area. The inner ring area includes a lifting neck connected to the outer ring area, a lifting part connected to the lifting neck, and a hollow area between the lifting part and the lifting neck; the release block is opposite to the lifting part; The functional layer is also provided with a connecting tearing line connecting one side of the pulling portion and the annular tearing line.

2. A ring-pull sealing gasket according to claim 1, characterized in that: The adhesive enables the peel strength between the bottom surface of the functional layer and the top surface of the adhesive layer to be greater than 12N / 15mm.

3. A ring-pull sealing gasket as claimed in claim 2, characterized in that: The adhesive is a dry composite adhesive or a hot melt adhesive, and the material of the hot melt adhesive is one of PE, PP, EMAC, EEA, EMAA, EAA and EMMA.

4. The ring-pull sealing gasket according to claim 1, characterized in that: The functional layer includes a facial mask and a connecting film compounded in sequence from top to bottom; the facial mask is at least one of a PI layer, a PEN layer, a PET layer, a PE layer, a PA layer and a PP layer; the connecting film is at least one of a PET layer, an EPE layer, an EPP layer, a PP layer, a PA layer and a PE layer.

5. A ring-pull sealing gasket as claimed in claim 4, characterized in that: The functional layer also includes a foaming film and / or a foaming plate film between the mask and the connecting film; the foaming film is an EPE layer or an EPP layer; and the foaming plate film is an EPE layer or an EPP layer.

6. A ring-pull sealing gasket as claimed in claim 4 or 5, characterized in that: The functional layer also includes a composite film between the mask and the connecting film, and the composite film is at least one of a PEN layer, a PET layer, a PP layer, a PA layer and a PE layer.

7. The ring-pull sealing gasket according to claim 4, characterized in that: The bonding layer includes the electromagnetic induction heating sheet and the sealing film which are compounded in sequence from top to bottom; the bottom surface of the bonding film is directly coated with the release block, and the coating area of ​​the release block is larger than the area where the lifting part is located.

8. The ring-pull sealing gasket according to claim 4, characterized in that: The bonding layer includes the electromagnetic induction heating sheet and the adhesive sealing film compounded in sequence from top to bottom; the top surface of the electromagnetic induction heating sheet is directly coated with the release block, and the coating area of ​​the release block is larger than the area where the lifting part and the hollow area are located.

9. The ring-pull sealing gasket according to claim 1, characterized in that: The functional layer includes a facial mask, an electromagnetic induction heating sheet and a connecting film which are compounded in sequence from top to bottom; the facial mask is at least one of a PI layer, a PEN layer, a PET layer, a PE layer, a PA layer and a PP layer; the connecting film is at least one of a PET layer, an EPE layer, an EPP layer, a PP layer, a PA layer and a PE layer.

10. The ring-pull sealing gasket according to claim 9, characterized in that: The bottom surface of the connecting film is directly coated with the release block, and the coating area of ​​the release block is larger than the area where the lifting part is located.

11. The ring-pull sealing gasket according to claim 1, characterized in that: The annular tear line and the connecting tear line adopt a continuous cutting line with multiple breakpoints. The functional layer parts corresponding to the breakpoints of the continuous cutting line are not completely cut in the vertical direction, and the functional layer parts corresponding to the parts of the continuous cutting line other than the breakpoints are completely cut.

12. The ring-pull sealing gasket according to claim 1, characterized in that: The annular tear line and the connecting tear line adopt a continuous cutting line with multiple breakpoints. The functional layer part corresponding to the breakpoints of the continuous cutting line is not cut and the length of the breakpoint is 0.02mm to 0.9mm. The functional layer part corresponding to the part of the continuous cutting line except the breakpoint is completely cut.

13. A ring-pull sealing gasket according to claim 11 or 12, characterized in that: The annular tear line and the connecting tear line are formed by cutting in a continuous arrangement by a cutting knife, and the cutting knife has an integral blade corresponding to the annular tear line and the connecting tear line.

14. The ring-pull sealing gasket according to claim 1, characterized in that: The electromagnetic induction heating sheet is made of aluminum foil.

15. The ring-pull sealing gasket according to claim 1, characterized in that: The electromagnetic induction heating sheet adopts a wireless information integrated sheet, which includes a base layer, a first adhesive layer and a multi-purpose component; the multi-purpose component includes a metal layer and a wireless information chip; the metal layer is matched on the base layer through the first adhesive layer, the first adhesive layer is sandwiched between the metal layer and the base layer, the metal layer has an antenna and an electromagnetic induction heating part arranged around the antenna, and the antenna is electrically connected to the wireless information chip.

16. The ring-pull sealing gasket according to claim 15, characterized in that: There is a gap between the electromagnetic induction heating unit and the antenna.

17. A ring-pull sealing gasket according to claim 16, characterized in that: The electromagnetic induction heating part of the metal layer is separated from the antenna by a distance of 0.1 mm to 3 mm.

18. The ring-pull sealing gasket according to claim 16, characterized in that: There is a full space between the electromagnetic induction heating unit and the antenna.

19. The ring-pull sealing gasket according to claim 16, characterized in that: The metal layer further includes at least one physical connecting bridge connecting the antenna and the electromagnetic induction heating part.

20. A ring-pull sealing gasket according to claim 15, 17 or 19, characterized in that: The wireless information integrated sheet also includes a protective layer and a second adhesive layer. The protective layer is compounded with the base layer and the multi-purpose component through the second adhesive layer, and the protective layer completely covers the multi-purpose component.

21. A ring-pull sealing gasket as claimed in claim 15, 17 or 19, characterized in that: The electromagnetic induction heating sheet has a circle of annular cutting lines with multiple breakpoints, the parts of the electromagnetic induction heating sheet corresponding to the breakpoints of the annular cutting lines are not cut and the length of the breakpoints is 0.02mm to 0.9mm, and the parts of the electromagnetic induction heating sheet corresponding to the parts other than the breakpoints of the annular cutting lines are completely cut; the annular cutting lines are located between the antenna and the electromagnetic induction heating part and surround the antenna, the annular cutting lines are opposite to the annular tearing lines, and the breakpoints of the annular cutting lines are opposite to the breakpoints of the annular tearing lines.

22. The ring-pull sealing gasket according to claim 1, characterized in that: The release coating is wax, varnish or silicone oil.

23. The ring-pull sealing gasket according to claim 1, characterized in that: The sealing layer is hot melt adhesive; the material of the hot melt adhesive is one of PE, PP, EMAC, EMAA, EEA, EAA, EBA and EMMA.

24. The ring-pull sealing gasket according to claim 1, characterized in that: The sealing layer comprises a sealing film and an adhesive; the sealing film is at least one of a PE film, a PP film, a PA film, a PVDC film, an EVOH film and a PET film; and the adhesive is arranged between the sealing film and the electromagnetic induction heating layer.

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