Ring pull type sealing gasket

Abstract

The utility model discloses a ring pull type sealing gasket which 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 device has the advantages of being convenient to open and good in sealing effect when being used in a press sealing mode again.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of sealing gasket, in particular to a ring-pull type sealing gasket. BACKGROUND

[0002] The sealing gasket is a kind of gasket for closing container bottle mouth, and the electromagnetic induction sealing gasket is a commonly used sealing gasket.The existing electromagnetic induction sealing gasket is heated by electromagnetic induction to make the aluminum foil heat, and then the adhesive sealing film in contact with the electromagnetic induction sealing gasket and container bottle mouth is melted by heat to realize the sealing of container bottle mouth by bonding the adhesive sealing film and bottle mouth.

[0003] However, the existing electromagnetic induction sealing gasket is not easy to tear after sealing the bottle mouth, which causes inconvenience in use, and users often have difficulty in tearing the electromagnetic induction sealing gasket, so users usually use relatively sharp blades, scissors and other tools to cut or pierce the electromagnetic induction sealing gasket at the container bottle mouth, which causes great inconvenience and poor experience for users, and even has certain safety hazards.Meanwhile, after tearing the electromagnetic induction sealing gasket, the bottle cap cannot effectively close the container bottle mouth again, and even if there is a paper board left in the bottle cap, the paper board has poor function of blocking oxygen and moisture, which causes the unused contents in the container to be easily affected by oxygen and moisture, resulting in shortening of the shelf life of the unused contents in the container and easy deterioration.

[0004] In view of the above problems, it is necessary to study a ring-pull type sealing gasket which is easy to open and has good sealing effect when re-pressing. INVENTION CONTENTS

[0005] The utility model aims at providing a ring-pull type sealing gasket which is easy to open and has good sealing effect when re-pressing.

[0006] In order to achieve the above purpose, the solution of the utility model is as follows:

[0007] A ring-pull type sealing gasket, comprising a functional layer and an adhesive layer, one of the functional layer and the adhesive layer is provided with an electromagnetic induction heating sheet, 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 by 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 release coating, the functional layer is provided with a ring-shaped tearing line, the ring-shaped tearing line divides the functional layer into an outer ring area and an inner ring area, the inner ring area includes a pulling neck connected with the outer ring area, a pulling part connected with the pulling neck and a hollow area between the pulling part and the pulling neck, the release block is opposite to the pulling part, and the functional layer is further provided with a connecting tearing line connecting one side of the pulling part and the ring-shaped tearing line.

[0008] The adhesive makes the peeling strength between the bottom surface of the functional layer and the top surface of the adhesive layer greater than 12 N / 15 mm.

[0009] The adhesive is dry compound glue or hot melt adhesive, and the material of the hot melt adhesive is one of PE, PP, EMAC, EEA, EMAA, EAA and EMMA.

[0010] The functional layer comprises a face film and a connecting film which are sequentially compounded from top to bottom; the face film is at least one of PI layer, PEN layer, PET layer, PE layer, PA layer and PP layer; the connecting film is at least one of PET layer, EPE layer, EPP layer, PP layer, PA layer and PE layer.

[0011] The functional layer further comprises a foaming film and / or a foaming plate film between the face film and the connecting film; the foaming film is EPE layer or EPP layer; the foaming plate film is EPE layer or EPP layer.

[0012] The functional layer further comprises a composite film between the face film and the connecting film, and the composite film is at least one of PEN layer, PET layer, PP layer, PA layer and PE layer.

[0013] The adhesive layer comprises the electromagnetic induction heating sheet and the adhesive layer which are sequentially compounded from top to bottom; the bottom surface of the connecting film is directly coated with the release block, and the coating area of the release block is greater than the area where the pulling part is located.

[0014] The adhesive layer comprises the electromagnetic induction heating sheet and the adhesive layer which are sequentially compounded 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 greater than the area where the pulling part and the hollow area are located.

[0015] The functional layer comprises a face film, the electromagnetic induction heating sheet and a connecting film which are sequentially compounded from top to bottom; the face film is at least one of PI layer, PEN layer, PET layer, PE layer, PA layer and PP layer; the connecting film is at least one of PET layer, EPE layer, EPP layer, PP layer, PA layer and PE layer.

[0016] The functional layer further comprises a foaming film and / or a foaming plate film between the face film and the electromagnetic induction heating sheet; the foaming film is EPE layer or EPP layer; the foaming plate film is EPE layer or EPP layer.

[0017] The functional layer further comprises a composite film between the face film and the electromagnetic induction heating sheet, and the composite film is at least one of PEN layer, PET layer, PP layer, PA layer and PE layer.

[0018] The bottom surface of the connecting film is directly coated with the release block, and the coating area of the release block is greater than the area where the pulling part is located.

[0019] The annular tear line and the connection tear line are formed by a continuous cutting line having a plurality of breakpoints, the functional layer portions corresponding to the breakpoints of the continuous cutting line are not completely cut, and the functional layer portions corresponding to the portions of the continuous cutting line other than the breakpoints are completely cut.

[0020] The annular tear line and the connection tear line are formed by a continuous cutting line having a plurality of breakpoints, the functional layer portions corresponding to the breakpoints of the continuous cutting line are not cut, and the length of the breakpoints is 0.02 mm to 0.9 mm, and the functional layer portions corresponding to the portions of the continuous cutting line other than the breakpoints are completely cut.

[0021] The annular tear line and the connection tear line are formed by a continuous cutting line having a plurality of breakpoints, the functional layer portions corresponding to the breakpoints of the continuous cutting line are not completely cut, and the functional layer portions corresponding to the portions of the continuous cutting line other than the breakpoints are completely cut.

[0022] The hollow area is provided with a pulling strip connecting the pulling neck and the pulling part.

[0023] The electromagnetic induction heating sheet adopts an aluminum foil.

[0024] The electromagnetic induction heating sheet adopts a wireless information integrated sheet, and the wireless information integrated sheet comprises a substrate layer, a first adhesive layer, and a multi-purpose component; the multi-purpose component comprises a metal layer and a wireless information chip; the metal layer is matched on the substrate layer through the first adhesive layer, and the first adhesive layer is arranged between the metal layer and the substrate layer; the metal layer has an antenna and an electromagnetic induction heating part arranged around the antenna, and the antenna is electrically connected with the wireless information chip.

[0025] The electromagnetic induction heating part and the antenna are separated by a gap.

[0026] The electromagnetic induction heating part and the antenna of the metal layer are separated by a gap of 0.1 mm to 3 mm.

[0027] The electromagnetic induction heating part and the antenna are separated by a gap.

[0028] The metal layer further comprises at least one physical connection bridge connecting the antenna and the electromagnetic induction heating part.

[0029] The wireless information integrated sheet further comprises a protective layer and a second adhesive layer, and the protective layer is combined with the substrate layer and the multi-purpose component through the second adhesive layer, and the protective layer completely covers the multi-purpose component.

[0030] The electromagnetic induction heating sheet has a circular cutting line with multiple breakpoints, the part of the electromagnetic induction heating sheet corresponding to the breakpoints of the circular cutting line is not cut and the length of the breakpoints is 0.02mm to 0.9mm, and the part of the electromagnetic induction heating sheet corresponding to the part of the circular cutting line other than the breakpoints is completely cut; the circular cutting line is located between the antenna and the electromagnetic induction heating part and surrounds the antenna, the circular cutting line is opposite to the annular tear line, and each breakpoint of the circular cutting line is opposite to each breakpoint of the annular tear line.

[0031] The release coating is wax, gloss oil or silicon oil.

[0032] The adhesive sealing layer is hot melt adhesive, and the material of the hot melt adhesive is one of PE, PP, EMAC, EMAA, EEA, EAA, EBA and EMMA.

[0033] The adhesive sealing layer comprises an adhesive sealing film and an adhesive, the adhesive 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 adhesive sealing film and the electromagnetic induction heating sheet.

[0034] After the ring-pulling type sealing gasket is used to seal the bottle opening of the container, if the user needs to open the bottle opening of the container, the user first opens the bottle cap of the container, and then directly pulls the pulling part of the functional layer upward with the hand, so that the pulling part drives the annular tear line and the connection tear line to be disconnected, so that the area inside the annular tear line in the ring-pulling type sealing gasket of the utility model is torn off and separated, and the ring-pulling type sealing gasket of the utility model leaves a ring-shaped body adhered to the bottle opening of the container, and at this time, the bottle opening of the container is opened.

[0035] In addition, the electromagnetic induction heating sheet of the utility model can integrate electromagnetic induction heating and information interaction functions, facilitate product anti-counterfeiting and traceability, and facilitate automatic, digital and intelligent management of factory, warehouse, logistics, store and unmanned cash register management. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 It is a sectional view of the embodiment one of the utility model.

[0037] Figure 2 It is a top view of the embodiment one of the utility model.

[0038] Figure 3 It is a sectional view of the embodiment two of the utility model.

[0039] Figure 4 is a top view of the embodiment two of the utility model.

[0040] Figure 5 is a sectional view of the embodiment three of the utility model.

[0041] Figure 6 is a top view of the embodiment three of the utility model.

[0042] Figure 7 is a sectional view of the embodiment four of the utility model.

[0043] Figure 8 is a sectional view of the embodiment five of the utility model.

[0044] Figure 9 is a sectional view of the embodiment six of the utility model.

[0045] Figure 10 is a sectional view of the embodiment seven of the utility model.

[0046] Figure 11 is a sectional view of the first kind of implementation of the electromagnetic induction heating sheet of the utility model.

[0047] Figure 12 is the cooperation schematic diagram of the metal layer and wireless information chip of the first kind of implementation of the electromagnetic induction heating sheet of the utility model.

[0048] Figure 13 is a top view of the first kind of implementation of the electromagnetic induction heating sheet of the utility model.

[0049] Figure 14 is a sectional view of the second kind of implementation of the electromagnetic induction heating sheet of the utility model.

[0050] Figure 15 is a sectional view of the third kind of implementation of the electromagnetic induction heating sheet of the utility model.

[0051] Figure 16 is a sectional view of the fourth kind of implementation of the electromagnetic induction heating sheet of the utility model.

[0052] Figure 17 is the cooperation schematic diagram of the metal layer and wireless information chip of the fifth kind of implementation of the electromagnetic induction heating sheet of the utility model.

[0053] Label explanation:

[0054] Functional layer 1, annular tear line 11, outer ring area 12, inner ring area 13, pull-up neck 131, pull-up 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 assembly A2, metal layer A21, antenna A211, antenna body A2110, arc-shaped antenna strip A2111, connecting strip A2112, electromagnetic induction heating part A212, physical connection bridge A213, wireless information chip A22, battery A23, encapsulation glue A24, ring cutting line A25, protective layer A3, first adhesive layer A4, second adhesive layer A5, adhesive sealing layer B, mask C, foaming film D, foaming plate film E, composite film F, connecting film G, adhesive H. DETAILED DESCRIPTION

[0055] Coordination Figures 1 to 17 As shown, the utility model discloses a ring pull type sealing gasket, it includes functional layer 1 and adhesive layer 2, wherein one of functional layer 1 and adhesive layer 2 is equipped with electromagnetic induction heating sheet A, and adhesive layer 2 has adhesive sealing layer B at the bottom side, the bottom surface of functional layer 1 and the top surface of adhesive layer 2 are strongly bonded by adhesive 3, and one of the bottom surface of functional layer 1 and the top surface of adhesive layer 2 is directly coated with release block 4 made of release coating, functional layer 1 is equipped with annular tear line 11, and annular tear line 11 divides functional layer 1 into outer ring area 12 and inner ring area 13, and inner ring area 13 includes pull-up neck 131 connected with outer ring area 12, pull-up part 132 connected with pull-up neck 131 and hollow area 133 between pull-up part 132 and pull-up neck 131, functional layer 1 is further equipped with connecting tear line 134 connecting one side of pull-up part 132 and annular tear line 11, release block 4 is opposite to pull-up part 132, and release block 4 is used to ensure that pull-up part 132 does not appear the condition of strong bonding with adhesive layer 2, so that pull-up part 132 can be easily pulled up, and release coating can adopt wax, varnish or silicon oil.

[0056] When the ring pull type sealing gasket of the utility model seals the container bottle mouth, electromagnetic induction is used to make electromagnetic induction heating sheet A generate heat, and then adhesive sealing layer B is heated and melted, after adhesive sealing layer B cools down, adhesive sealing layer B is bonded with the container bottle mouth to realize the sealing of the container bottle mouth.

[0057] When the user needs to open the bottle mouth of the container, the user first opens the bottle cap of the container, and then directly pulls the pulling part 132 of the functional layer 1 upward with the hand, so that the pulling part 132 in turn drives the connection tear line 134 and the annular tear line 11 to be disconnected, so that the area inside the annular tear line 11 in the ring-pulling type sealing gasket of the utility model is torn off and separated, so that the ring-pulling type sealing gasket of the utility model leaves a ring-shaped body adhered to the container bottle mouth, and at this time the container bottle mouth is opened; as can be seen from the foregoing, the utility model does not need to use tools in the whole process of opening the container bottle mouth, which is very convenient; and when the user locks the bottle cap of the container again, the bottle cap will press the ring-shaped body left on the container bottle mouth, so that the utility model still has good sealing effect when re-pressing and sealing.

[0058] In the utility model, the annular tear line 11 and the connection tear line 134 of the functional layer 1 can adopt a continuous cutting line with multiple breakpoints, 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, so as to ensure the structural stability of the functional layer 1; of course, the part of the functional layer 1 corresponding to the breakpoints of the continuous cutting line can also be not cut and the length of the breakpoint is 0.02mm to 0.9mm, so that the structural stability of the functional layer 1 can also be ensured; the continuous cutting line can make the pulling part 132 drive the connection tear line 134 and the annular tear line 11 to be effectively disconnected when the user pulls the pulling part 132. The annular tear line 11 and the connection tear line 134 are cut by being continuously arranged and formed by a cutting knife (that is, being cut by a cutting knife once), and the cutting knife has an integral knife edge corresponding to the annular tear line 11 and the connection tear line 134.

[0059] In order to further explain the technical scheme of the utility model, the utility model will be described in detail through specific embodiments below.

[0060] Embodiment one:

[0061] Cooperation Figure 1 And Figure 2As shown, in the embodiment one of the utility model, the functional layer 1 includes the facial mask C, foaming film D, foaming plate film E, composite film F, foaming film D and connecting film G that are sequentially compounded from top to bottom, and the adhesive layer 2 includes electromagnetic induction heating sheet A and adhesive sealing layer B that are sequentially compounded from top to bottom, and the adhesive sealing layer B adopts adhesive sealing film; the top surface of electromagnetic induction heating sheet A is directly coated with release block 4 formed by release coating. Among them, the peeling strength between functional layer 1 and adhesive layer 2 is greater than 12N / 15mm, and the adhesive 3 can be dry compound glue or hot melt adhesive glue, and the material of hot melt adhesive glue can be one of PE, PP, EMAC, EEA, EMAA, EAA and EMMA; facial mask C, foaming film D, foaming plate film E, composite film F, foaming film D and connecting film G can be compounded by adhesive H between each other, and the peeling strength between facial mask C, foaming film D, foaming plate film E, composite film F, foaming film D and connecting film G between each other is greater than 5N / 15mm; electromagnetic induction heating sheet A and adhesive sealing film can be compounded by adhesive H between each other, and the peeling strength between electromagnetic induction heating sheet A and adhesive sealing film is greater than 4N / 15mm.

[0062] In the embodiment one of the utility model, the face mask C is at least one kind of PI layer, PEN layer, PET layer, PE layer, PA layer and PP layer, the thickness of face mask C is 12-150 mu m, the foamed film D is EPE layer or EPP layer, the thickness of foamed film D is 60-300 mu m, and the foamed film D has lower foaming rate and good composite effect with face mask C, the foamed plate film E is EPE layer or EPP layer, the thickness of foamed plate film E is 0.6-3 mm or the thickness of the foamed plate film E is 10-2 mm, and foamed plate film E plays the role of thickening, the composite film F is at least one kind of PEN layer, PET layer, PP layer, PA layer and PE layer, and the thickness of composite film F is 12-150 mu m, the connecting film G is at least one kind of PET layer, EPE layer, EPP layer, PP layer, PA layer and PE layer, and the thickness of connecting film G is 12-200 mu m, the sticking sealing film is at least one kind of PE layer, PP layer, PA layer, PVDC layer, EVOH layer and PET layer, so that the sealing ring is adhered to the bottle mouth after electromagnetic induction sealing, and the thickness of sticking sealing film is 12-100 mu m, the thickness of electromagnetic induction heating sheet A is 10-2.5 mm, and electromagnetic induction heating sheet A can adopt aluminum foil, the thickness of aluminum foil is 10-40 mu m, and electromagnetic induction heating sheet A can also adopt wireless information integrated sheet, and the thickness of wireless information integrated sheet is 27-2.5 mm.It needs to be explained that sticking sealing layer B is not limited to using sticking sealing film, and sticking sealing layer B can also directly use hot melt adhesive, the material of hot melt adhesive is one of PE, PP, EMAC, EMAA, EEA, EAA, EBA and EMMA, so that the sealing ring is adhered to the bottle mouth after electromagnetic induction sealing, the thickness of hot melt adhesive is 4-100 mu m, and hot melt adhesive does not need to use adhesive H when being compounded with other film layers.

[0063] In the embodiment one of the utility model, the coating area of the release block 4 is greater than the area of the pulling part 132 and the hollow area 133, so that when the functional layer 1 and the adhesive layer 2 are compounded and then the part of the functional layer 1 in the hollow area 133 is cut off, the part of the functional layer 1 in the hollow area 133 can be easily separated, and the pulling part 132 cannot be easily adhered to the adhesive layer 2 below, so that the pulling part 132 can be easily pulled up.

[0064] Cooperation Figure 2As shown, in the embodiment one of the utility model, the annular tear line 11 is equivalent to the line connected by point i-j-k-l-m-i, the link tear line 134 is equivalent to the line connected by point a-g-h-i, and the hollow area 133 refers to the area surrounded by point a-b-c-d-e-f-g-a, and the hollow area 133 is formed by cutting the cutting section formed by point a-b-c-d-e-f-g-a, and the pulling part 132 is equivalent to the circular area surrounded by point a-b-c-d-a, and the pulling part 132 and the hollow area 133 are in the non-central region of the functional layer 1.

[0065] The manufacturing method of the ring-pull type sealing gasket of the embodiment one of the utility model is provided below.

[0066] First, the adhesive H is coated on the mask roll material and dry compounded with the foam film roll material, and sent into the curing chamber for 24 hours or more, to make the first composite part roll material;

[0067] Secondly, the adhesive H is coated on the foam film surface of the first composite part roll material and dry compounded with the foam plate film roll material, and sent into the curing chamber for 24 hours or more, to make the surface composite part roll material;

[0068] Then, the adhesive H is coated on the foam plate film surface of the composite part roll material and dry compounded with the composite film roll material, and sent into the curing chamber for 24 hours or more, to make the second composite part roll material;

[0069] Next, the adhesive H is coated on the composite film surface of the second composite part roll material and dry compounded with the foam film roll material, and sent into the curing chamber for 24 hours or more, to make the third composite part roll material;

[0070] Then, the adhesive H is coated on the foam plate film surface of the third composite part roll material and dry compounded with the connecting film roll material, and sent into the curing chamber for 24 hours or more, to make the functional layer roll material;

[0071] Then, the adhesive H is coated on the lower surface of the electromagnetic induction heating sheet roll material and dry compounded with the sealing film roll material, and sent into the curing chamber for 24 hours or more, to make the fourth composite part roll material; or, hot melt adhesive is coated on the lower surface of the electromagnetic induction heating sheet roll material, to make the fourth composite part roll material;

[0072] Then, the release block is coated on the electromagnetic induction heating sheet surface of the fourth composite part roll material, to make the lower composite part roll material;

[0073] Then, the adhesive H is coated on the connecting film of the functional layer roll, and dry composite is performed with the bottom surface of the electromagnetic induction heating sheet of the lower composite roll, and the ring-pull type sealing gasket blank is made by feeding into the curing chamber for more than 24 hours; then, the ring-pull type sealing gasket blank is cut to form the annular tear line 11, the pulling neck 131, the pulling part 132, the hollow area 133 and the connecting tear line 134.

[0074] Finally, the ring-pull type sealing gasket roll is cut to form the ring-pull type sealing gasket.

[0075] Example two:

[0076] Cooperation Figure 3 And Figure 4 As shown in the second embodiment of the present application, the functional layer 1 comprises the surface film C, the composite film F and the connecting film G which are sequentially compounded from top to bottom; and the adhesive layer 2 comprises the electromagnetic induction heating sheet A and the adhesive layer B which are sequentially compounded from top to bottom, and the adhesive layer B is an adhesive film; the top surface of the electromagnetic induction heating sheet A is directly coated with a release block 4 composed of release coating. Among them, the peeling strength between the functional layer 1 and the adhesive layer 2 is greater than 12N / 15mm, and the adhesive 3 can be dry composite glue or hot melt adhesive, and the material of the hot melt adhesive can be one of PE, PP, EMAC, EEA, EMAA, EAA and EMMA; the surface film C, the composite film F and the connecting film G can be compounded by the adhesive H, and the peeling strength between the surface film C, the composite film F and the connecting film G is greater than 5N / 15mm; the electromagnetic induction heating sheet A and the adhesive film can also be compounded by the adhesive H, and the peeling strength between the electromagnetic induction heating sheet A and the adhesive film is greater than 4N / 15mm.

[0077] In the embodiment two of the utility model, the face mask C is at least one of PI layer, PEN layer, PET layer, PE layer, PA layer and PP layer, the thickness of face mask C is 12 ~ 150 μm;The composite film F is at least one of PEN layer, PET layer, PP layer, PA layer and PE layer, the thickness of composite film F is 12 ~ 150 μm;The connecting film G is at least one of PET layer, EPE layer, EPP layer, PP layer, PA layer and PE layer, the thickness of connecting film G is 12 ~ 200 μm;The adhesive sealing film is at least one of PE layer, PP layer, PA layer, PVDC layer, EVOH layer and PET layer, so that the sealing ring is adhered to the bottle mouth after electromagnetic induction sealing, the thickness of adhesive sealing film is 12 ~ 100 μm;The thickness of electromagnetic induction heating sheet A is 10 ~ 2.5 mm.It needs to be explained that the adhesive sealing layer B is not limited to using adhesive sealing film;The adhesive sealing layer B can also directly use hot melt adhesive, the material of hot melt adhesive is one of PE, PP, EMAC, EMAA, EEA, EAA, EBA and EMMA, so that the sealing ring is adhered to the bottle mouth after electromagnetic induction sealing, the thickness of hot melt adhesive is 4 ~ 100 μm, and the hot melt adhesive does not need to be assisted by adhesive H when being compounded with other film layers.

[0078] In the embodiment two of the utility model, the coating area of the release block 4 is greater than the area where the pulling part 132 and the hollow area 133 are located, so that when the functional layer 1 and the adhesive layer 2 are compounded and then the part of the functional layer 1 in the hollow area 133 is cut off, the part of the functional layer 1 in the hollow area 133 can be easily detached, and the pulling part 132 cannot be easily adhered to the adhesive layer 2 below, so that the pulling part 132 can be easily pulled up.

[0079] Cooperation Figure 4 As shown in the embodiment two of the utility model, the annular tear line 11 is equivalent to the line connected by points i-j-k-l-m-i;The connection tear line 134 is equivalent to the line connected by points a-g-h-i;And the hollow area 133 refers to the area surrounded by points a-b-c-d-e-f-g-a, and the hollow area 133 is cut off by the cutting section formed by points a-b-c-d-e-f-g-a;The pulling part 132 is equivalent to the circular region surrounded by points a-b-c-d-a;The pulling part 132 and the hollow area 133 are in the central region of the functional layer 1.

[0080] Embodiment three:

[0081] Cooperation Figure 5 And Figure 6As shown, in the embodiment three of the utility model, the functional layer 1 includes the mask C and the connecting film G which are compounded in turn from top to bottom, and the adhesive layer 2 includes the electromagnetic induction heating sheet A and the adhesive sealing layer B which are compounded in turn from top to bottom, and the adhesive sealing layer B adopts the adhesive sealing film, the top surface of the electromagnetic induction heating sheet A is directly coated with the release block 4 which is composed of release coating, wherein the adhesive 3 makes the peeling strength between the functional layer 1 and the adhesive layer 2 greater than 12N / 15mm, the adhesive 3 can be dry compound glue or hot melt adhesive glue, the material of the hot melt adhesive glue can be one of PE, PP, EMAC, EEA, EMAA, EAA and EMMA, the mask C and the connecting film G can be compounded through the adhesive H, 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 adhesive sealing film can also be compounded through the adhesive H, and the peeling strength between the electromagnetic induction heating sheet A and the adhesive sealing film is greater than 4N / 15mm. In the embodiment three of the utility model, the mask C is at least one of PI layer, PEN layer, PET layer, PE layer, PA layer and PP layer, the thickness of the mask C is 12-150mu m, the connecting film G is at least one of PET layer, EPE layer, EPP layer, PP layer, PA layer and PE layer, the thickness of the connecting film G is 12-200mu m, the adhesive sealing film is at least one of PE layer, PP layer, PA layer, PVDC layer, EVOH layer and PET layer, so that the sealing ring is adhered to the bottle opening after electromagnetic induction sealing, the thickness of the adhesive sealing film is 12-100mu m, and the thickness of the electromagnetic induction heating sheet A is 10-2.5mm. It should be noted that the adhesive sealing layer B is not limited to the adhesive sealing film, and the adhesive sealing layer B can also directly adopt hot melt adhesive, the material of the hot melt adhesive is one of PE, PP, EMAC, EMAA, EEA, EAA, EBA and EMMA, so that the sealing ring is adhered to the bottle opening after electromagnetic induction sealing, the thickness of the hot melt adhesive is 4-100mu m, and the hot melt adhesive does not need to be assisted by the adhesive H when being compounded with other film layers.

[0082] In the embodiment three of the utility model, the coating area of the release block 4 is greater than the area of the pulling part 132 and the hollow area 133, so that when the functional layer 1 and the adhesive layer 2 are compounded and then the part of the functional layer 1 in the hollow area 133 is cut off, the part of the functional layer 1 in the hollow area 133 can be easily fallen off, and the pulling part 132 is not easily adhered to the adhesive layer 2 below, so that the pulling part 132 can be easily pulled up.

[0083] Cooperation Figure 6As shown in the embodiment three of the utility model, the annular tear line 11 is equivalent to the line connected by points s-t-u-v-t;The connection tear line 134 is equivalent to the line connected by points q-r-s;And the pulling part 132 refers to the area surrounded by points a-b-c-d-e-f-g-a;The hollow area 133 is provided with the pulling strip 135 connecting the pulling neck part 131 and the pulling part 132 to prevent the pulling part 132 from warping, each pulling strip 135 divides the hollow area 133 into first hollow subarea 1331, second hollow subarea 1332, third hollow subarea 1333 and fourth hollow subarea 1334, the first hollow subarea 1331 is cut by the first cutting subline (equivalent to the line connected by points f-k-j-i-h-g-f), the second hollow subarea 1332 is cut by the second cutting subline (equivalent to the line connected by points e-l-m-d-e), the third hollow subarea 1333 is cut by the third cutting subline (equivalent to the line connected by points c-n-o-b-c), and the fourth hollow subarea 1334 is cut by the fourth cutting subline (equivalent to the line connected by points a-p-q-a). The pulling part 132 and the hollow area 133 are in the central region of the functional layer 1.

[0084] Embodiment four:

[0085] Cooperation Figure 7 As shown, the difference between the embodiment four of the utility model and the embodiment one to three lies in that the layer structure of the functional layer 1 and the adhesive layer 2 is different.

[0086] Specifically, in the embodiment four of the utility model, the functional layer 1 includes facial mask C, foaming film D, foaming plate film E, composite film F, foaming film D, electromagnetic induction heating sheet A and connecting film G from top to bottom in sequence;And the adhesive layer 2 only includes sealing layer B, and the sealing layer B adopts sealing film;The bottom surface of the connecting film G is directly coated with release block 4 composed of release coating. Among them, the peeling strength between the functional layer 1 and the adhesive layer 2 is greater than 12N / 15mm, the adhesive 3 can be dry composite glue or hot melt adhesive, and the material of the hot melt adhesive can be one of PE, PP, EMAC, EEA, EMAA, EAA and EMMA;Facial mask C, foaming film D, foaming plate film E, composite film F, foaming film D, electromagnetic induction heating sheet A and connecting film G can be compounded by adhesive H between each other, and the peeling strength between facial mask C, foaming film D, foaming plate film E, composite film F, foaming film D, electromagnetic induction heating sheet A and connecting film G is greater than 5N / 15mm.

[0087] In the embodiment four of the utility model, the mask C is at least one kind of PI layer, PEN layer, PET layer, PE layer, PA layer and PP layer, the thickness of mask C is 12-150 μm;The foamed film D is EPE layer or EPP layer, the thickness of foamed film D is 60-300 μm, and the foamed film D has lower foaming rate and good composite effect with mask C;The foamed plate film E is EPE layer or EPP layer, the thickness of foamed plate film E is 0.6-3 mm, and the foamed plate film E plays the role of thickening;The composite film F is at least one kind of PEN layer, PET layer, PP layer, PA layer and PE layer, and the thickness of composite film F is 12-150 μm;The connecting film G is at least one kind of PET layer, EPE layer, EPP layer, PP layer, PA layer and PE layer, and the thickness of connecting film G is 12-200 μm;The sealing film is at least one kind of PE layer, PP layer, PA layer, PVDC layer, EVOH layer and PET layer, so that the sealing ring is adhered to the bottle mouth after electromagnetic induction sealing, and the thickness of sealing film is 12-100 μm;The thickness of electromagnetic induction heating sheet A is 10-2.5 mm.It needs to be explained that the sealing layer B is not limited to using sealing film;The sealing layer B can also directly use hot melt adhesive, and the material of hot melt adhesive is one of PE, PP, EMAC, EMAA, EEA, EAA, EBA and EMMA, so that the sealing ring is adhered to the bottle mouth after electromagnetic induction sealing, and the thickness of hot melt adhesive is 4-100 μm, and the hot melt adhesive does not need to use adhesive H when being compounded with other film layers.

[0088] In the embodiment four of the utility model, the coating area of the release block 4 is larger than the area where the pulling part 132 is located, so that after the functional layer 1 is cut off the part of the functional layer 1 in the hollowed-out area 133 and then compounded with the adhesive layer 2, the pulling part 132 can not be easily adhered to the adhesive layer 2 below, and the pulling part 132 can be easily pulled up.

[0089] Embodiment five

[0090] Cooperation Figure 8 As shown in the utility model, the embodiment five of the utility model is different from the embodiments one to three in that the layer structure of the functional layer 1 and the adhesive layer 2 is different.

[0091] Specifically, in the embodiment five of the utility model, the functional layer 1 includes the mask C, the electromagnetic induction heating sheet A and the connecting film G which are sequentially compounded from top to bottom, and the adhesive layer 2 only includes the sealing layer B, the sealing layer B adopts the sealing film, the bottom surface of the connecting film G is directly coated with the release block 4 which is composed of release coating, wherein the peeling strength between the functional layer 1 and the adhesive layer 2 is greater than 12N / 15mm, the adhesive 3 can be dry compound glue or hot melt adhesive, 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.

[0092] In the embodiment five of the utility model, the mask C is at least one of PI layer, PEN layer, PET layer, PE layer, PA layer and PP layer, the thickness of the mask C is 12μm~150μm, the connecting film G is at least one of PET layer, EPE layer, EPP layer, PP layer, PA layer and PE layer, the thickness of the connecting film G is 12μm~200μm, the sealing film is at least one of PE layer, PP layer, PA layer, PVDC layer, EVOH layer and PET layer, so that the sealing ring is adhered to the bottle mouth after electromagnetic induction sealing, the thickness of the sealing film is 12μm~100μm, and 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, and the sealing layer B can directly adopt hot melt adhesive, the material of the hot melt adhesive is one of PE, PP, EMAC, EMAA, EEA, EAA, EBA and EMMA, so that the sealing ring is adhered 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 assisted by the adhesive H when being compounded with other film layers.

[0093] In the embodiment five of the utility model, the coating area of the release block 4 is greater than the area of the pulling part 132, so that after the functional layer 1 is cut to remove the part of the functional layer 1 in the hollow area 133 and then compounded with the adhesive layer 2, the pulling part 132 is not easily adhered to the adhesive layer 2 below, and the pulling part 132 can be easily pulled up.

[0094] The manufacturing method of the ring-pulling type sealing gasket in the embodiment five of the utility model is provided below.

[0095] Firstly, the adhesive H is coated on the mask roll stock and dry compounded with the connecting film roll stock, and the first compounded roll stock is made by feeding into the curing chamber for more than 24 hours.

[0096] Then, the electromagnetic induction heating sheet of the functional layer roll is coated with adhesive H and dry compounded with the connecting film roll of the first composite roll, and sent into the curing chamber for more than 24 hours to make the functional layer roll;

[0097] Then, the lower surface of the electromagnetic induction heating sheet of the functional layer roll is coated with release block 4, and the functional layer roll is cut into annular tear lines 11, pull-up neck 131, pull-up part 132, hollow area 133 and connection tear line 134; wherein the coating area of the release block 4 is not less than the pull-up part 132;

[0098] Then, the electromagnetic induction heating sheet of the functional layer roll is coated with adhesive H and dry compounded with the connecting film roll of the first composite roll, and sent into the curing chamber for more than 24 hours to make the functional layer roll;

[0099] Finally, the ring-pull type sealing gasket blank is cut to make the ring-pull type sealing gasket.

[0100] Example six:

[0101] Cooperation Figure 9 As shown in the embodiment six of the utility model, the functional layer 1 comprises the mask C, the foamed plate film E, the composite film F, the foamed film D and the connecting film G which are sequentially compounded from top to bottom; and the adhesive layer 2 comprises the electromagnetic induction heating sheet A and the sealing layer B which are sequentially compounded from top to bottom, and the sealing layer B adopts the sealing film; the bottom surface of the connecting film G is directly coated with release block 4 composed of release coating. Among them, the peeling strength between the functional layer 1 and the adhesive layer 2 is greater than 12N / 15mm, the adhesive 3 can be dry compounded glue or 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 foamed plate film E, the composite film F, the foamed film D and the connecting film G can be compounded by adhesive H, and the peeling strength between the mask C, the foamed plate film E, the composite film F, the foamed 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 compounded by adhesive H, and the peeling strength between the electromagnetic induction heating sheet A and the sealing film is greater than 4N / 15mm.

[0102] In the embodiment six of the utility model, the mask C is at least one of PI layer, PEN layer, PET layer, PE layer, PA layer and PP layer, the thickness of mask C is 12 ~ 150 μm;The foamed film D is EPE layer or EPP layer, the thickness of foamed film D is 60 ~ 300 μm, and the foamed film D has low foaming rate and good composite effect with mask C;The foamed plate film E is EPE layer or EPP layer, the thickness of foamed plate film E is 0.6 ~ 3 mm, and the foamed plate film E plays the role of thickening;The composite film F is at least one of PEN layer, PET layer, PP layer, PA layer and PE layer, and the thickness of composite film F is 12 ~ 150 μm;The connecting film G is at least one of PET layer, EPE layer, EPP layer, PP layer, PA layer and PE layer, and the thickness of connecting film G is 12 ~ 200 μm;The sealing film is at least one of PE layer, PP layer, PA layer, PVDC layer, EVOH layer and PET layer, and the thickness of sealing film is 12 ~ 100 μm;The thickness of electromagnetic induction heating sheet A is 10 ~ 2.5 mm.It needs to be explained that the sealing layer B is not limited to using sealing film;The sealing layer B can also directly use hot melt adhesive, the material of hot melt adhesive is one of PE, PP, EMAC, EMAA, EEA, EAA, EBA and EMMA, the thickness of hot melt adhesive is 4 ~ 100 μm, and the hot melt adhesive does not need to use the adhesive H when being compounded with other film layers.

[0103] In the embodiment six of the utility model, the coating area of the release block 4 is larger than the area where the pulling part 132 is located, so that after the functional layer 1 is cut off the part of the functional layer 1 in the hollow area 133 and then compounded with the adhesive layer 2, the pulling part 132 is not easy to be adhered by the adhesive layer 2 below, and the pulling part 132 can be easily pulled up.

[0104] Embodiment seven

[0105] Cooperation Figure 10 As shown in the utility model embodiment seven, the functional layer 1 includes mask C and connecting film G which are compounded from top to bottom;And the adhesive layer 2 includes electromagnetic induction heating sheet A and sealing layer B which are compounded from top to bottom, and the sealing layer B uses sealing film;The bottom surface of connecting film G is directly coated with release block 4 which is composed of release coating. Among them, the peeling strength between functional layer 1 and adhesive layer 2 is greater than 12N / 15mm, and the adhesive 3 can be dry composite glue or hot melt adhesive, and the material of hot melt adhesive can be one of PE, PP, EMAC, EEA, EMAA, EAA and EMMA;Mask C and connecting film G can be compounded by adhesive H, and the peeling strength between mask C and connecting film G is greater than 5N / 15mm;Electromagnetic induction heating sheet A and sealing film can be compounded by adhesive H, and the peeling strength between electromagnetic induction heating sheet A and sealing film is greater than 4N / 15mm.

[0106] In the embodiment seven of the utility model, the mask C is at least one of PI layer, PEN layer, PET layer, PE layer, PA layer and PP layer, the thickness of mask C is 12-150 mu m, the connecting film G is at least one of PET layer, EPE layer, EPP layer, PP layer, PA layer and PE layer, the thickness of connecting film G is 12-200 mu m, the sticking sealing film is at least one of PE layer, PP layer, PA layer, PVDC layer, EVOH layer and PET layer, the thickness of sticking sealing film is 12-100 mu m, the electromagnetic induction heating sheet A can adopt aluminum foil, and the thickness of aluminum foil is 10-40 mu m. It needs to be explained that the sticking sealing layer B is not limited to adopting sticking sealing film, and the sticking sealing layer B can directly adopt hot melt adhesive, the material of hot melt adhesive is one of PE, PP, EMAC, EMAA, EEA, EAA, EBA and EMMA, the thickness of hot melt adhesive is 4-100 mu m, and the hot melt adhesive does not need to be assisted by the adhesive H when being compounded with other film layers.

[0107] In the embodiment seven of the utility model, the coating area of the release block 4 is greater than the area where the pulling part 132 is located, so that after the functional layer 1 is cut off the part of the functional layer 1 in the hollow area 133 and then is compounded with the adhesive layer 2, the pulling part 132 can not be easily adhered by the adhesive layer 2 below, and the pulling part 132 can be easily pulled up.

[0108] It needs to be explained that for the above-mentioned embodiment one, embodiment two, embodiment three and embodiment six, the bottom surface of the electromagnetic induction heating sheet A is directly coated with the release block 4 composed of release coating, and the embodiment one, embodiment two, embodiment three and embodiment eight can also adopt that the bottom surface of the connecting film G is directly coated with the release block 4 composed of release coating.

[0109] In order to facilitate understanding of the utility model, the following specifically introduces several implementation manners of the electromagnetic induction heating sheet A of the utility model.

[0110] The first implementation manner of the electromagnetic induction heating sheet A of the utility model:

[0111] Cooperation Figures 11 to 13As shown in the first embodiment of the electromagnetic induction heating sheet A of the utility model, the electromagnetic induction heating sheet A of the utility model adopts a wireless information integrated sheet, the wireless information integrated sheet comprises a substrate layer A1, a first adhesive layer A4 and a multipurpose assembly A2, and the multipurpose assembly A2 can realize electromagnetic induction heating function and information interaction function; wherein the multipurpose assembly A2 comprises a metal layer A21 and a wireless information chip A22; the metal layer A21 is matched on the substrate layer A1 through the first adhesive layer A4, the first adhesive layer A4 is clamped between the metal layer A21 and the substrate layer A1, the metal layer A21 is provided with an antenna A211 and an electromagnetic induction heating part A212 surrounding the antenna A211, the electromagnetic induction heating part A212 and the antenna A211 can be separated from each other, and the distance between the outside of the antenna A211 and the inside of the electromagnetic induction heating part A212 is 0.1-3mm to ensure the isolation degree of the two. The utility model is thus arranged, which can make the metal layer A21 use less material and help reduce the cost; in addition, the wireless information chip A22 can realize information interaction function by wireless communication with external equipment through the antenna A211, which can facilitate the storage and reading of production, logistics and other information, facilitate anti-counterfeiting and traceability; and the electromagnetic induction heating part A212 is used for generating heat by electromagnetic induction to bond the sealing layer B and the container bottle mouth, and the electromagnetic induction heating part A212 surrounds the antenna A211, so that the electromagnetic induction heating part A212 has little shielding effect on the antenna A211, so that the wireless information chip A22 is less disturbed by the electromagnetic induction heating part A212 when performing wireless communication, ensuring the wireless communication performance of the wireless information chip A22 and helping to improve the wireless communication distance of the wireless information chip A22; in addition, the electromagnetic induction heating part A212 surrounds the antenna A211, so that the electromagnetic induction heating part A212 only bonds the sealing layer B periphery and the container bottle mouth when generating heat by electromagnetic induction, reducing the heating area of the bonding layer 2 and avoiding the generation of some odor gas due to excessive heating of the bonding layer 2, thereby avoiding the infiltration of odor gas into the contents of the container to make people uncomfortable, and at the same time, the heating area is small and the energy consumption is low.

[0112] In the first embodiment of the electromagnetic induction heating sheet A of the utility model, the thickness of the electromagnetic induction heating sheet A can be 27-300µm; and the thickness of the multipurpose assembly A2 is 6-300µm.

[0113] In the first embodiment of the electromagnetic induction heating sheet A of the utility model, the antenna A211 comprises two antenna bodies A2110 arranged symmetrically, the antenna body A2110 comprises a plurality of antenna strips A2111 bending in the same direction and a connecting strip A2112 connecting the antenna strips A2111; in this way, the receiving and transmitting signal capability of the antenna A211 can be strong. The connecting strip A2112 of the two antenna bodies A2110 is used for connecting the wireless information chip A22.

[0114] In the first embodiment of the electromagnetic induction heating sheet A of the utility model, 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 peeling strength between the base layer A1 and the metal layer A21 greater than 4N / 15mm.

[0115] In the first embodiment of the electromagnetic induction heating sheet A of the utility model, 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.

[0116] In the first embodiment of the electromagnetic induction heating sheet A of the utility model, the electromagnetic induction heating sheet roll material adopts a wireless information integrated sheet roll material, and the production method of the electromagnetic induction heating sheet roll material comprises the following steps:

[0117] Step S1: the composite surface of the base layer roll material is compounded with the composite surface of the metal foil roll material through the first adhesive layer A4 to obtain an electromagnetic induction heating sheet blank roll material;

[0118] Step S2: the metal foil of the electromagnetic induction heating sheet blank roll material is etched to form a metal layer A21, the metal layer A21 has an antenna A211 and an electromagnetic induction heating part A212 arranged around the antenna A211, to obtain an electromagnetic induction heating sheet blank two roll material;

[0119] Step S3: the metal layer of the electromagnetic induction heating sheet blank two roll material is connected with the antenna A211 of the metal layer A21 and the wireless information chip A22, and the wireless information chip A22 is protected by dispensing glue, so as to obtain the electromagnetic induction heating sheet roll material; wherein the wireless information chip A22 and the antenna A211 of the metal layer A21 are connected by a bonder, and the wireless information chip A22 and the antenna A211 of the metal layer A21 are connected by a bonder, and the wireless information chip A22 and the antenna A211 of the metal layer A21 are connected by a bonder.

[0120] The second embodiment of the electromagnetic induction heating sheet A of the utility model is as follows:

[0121] Cooperation Figure 14As shown, the second embodiment of the electromagnetic induction heating sheet A of the utility model differs from the first embodiment of the electromagnetic induction heating sheet A of the utility model in that: in the second embodiment of the electromagnetic induction heating sheet A of the utility model, the electromagnetic induction heating sheet A also adopts a wireless information integrated sheet, the multi-purpose assembly A2 of the wireless information integrated sheet further comprises a battery A23, the battery A23 is electrically connected with the wireless information chip A22, the battery A23 can stably supply power for the wireless information chip A22, and the working stability of the wireless information chip A22 is improved; wherein the battery A23 can supply power for the wireless information chip A22 according to the rules preset by the built-in software or the instructions transmitted by the external reader, so that the wireless information chip A22 works regularly and records the working parameters (such as temperature parameters and position parameters) regularly, and the effective management and control of logistics (such as cold chain logistics) is facilitated.

[0122] In the second embodiment of the electromagnetic induction heating sheet A of the utility model, the thickness of the electromagnetic induction heating sheet A can be 40µm to 2.5mm; the thickness of the multi-purpose assembly A2 is 6µm to 2.5mm.

[0123] In the second embodiment of the electromagnetic induction heating sheet A of the utility model, the electromagnetic induction heating sheet roll material adopts a wireless information integrated sheet roll material, and the production method of the electromagnetic induction heating sheet A comprises the following steps:

[0124] Step S1: the composite surface of the base layer roll material is compounded with the composite surface of the metal foil roll material through the first adhesive layer A4, so as to obtain an electromagnetic induction heating sheet blank roll material;

[0125] Step S2: the metal foil of the electromagnetic induction heating sheet blank roll material is etched and processed, so that the metal foil forms a metal layer A21, the metal layer A21 has an antenna A211 and an electromagnetic induction heating part A212 arranged around the antenna A211, so as to obtain an electromagnetic induction heating sheet blank two roll material;

[0126] Step S3: the metal layer of the electromagnetic induction heating sheet blank two roll material is connected with the antenna A211 of the wireless information chip A22 and the metal layer A21, the battery A23 is electrically connected with the wireless information chip A22, and the wireless information chip A22 is protected by dispensing glue, so as to obtain the electromagnetic induction heating sheet roll material; wherein the wireless information chip A22 and the antenna A211 of the metal layer A21 are connected by a bonding machine, and the wireless information chip A22 and the antenna A211 of the metal layer A21 are bonded and protected by the encapsulation glue A24 after being bonded.

[0127] The third embodiment of the electromagnetic induction heating sheet A of the utility model:

[0128] cooperating Figure 15 As shown in the third embodiment of the electromagnetic induction heating sheet A of the utility model, the main difference between the third embodiment of the electromagnetic induction heating sheet A of the utility model and the first embodiment of the electromagnetic induction heating sheet A of the utility model is that: in the third embodiment of the electromagnetic induction heating sheet A of the utility model, the electromagnetic induction heating sheet A also adopts a wireless information integrated sheet, the wireless information integrated sheet further comprises a protective layer A3 and a second adhesive layer A5, the protective layer A3 is compounded with the base layer A1 and the multi-purpose assembly A2 through the second adhesive layer A5, and the protective layer A3 completely covers the multi-purpose assembly A2, and the protective layer A3 can effectively protect the multi-purpose assembly A2, so that the electromagnetic induction heating sheet A of the utility model will not have the problem of damage to the multi-purpose assembly 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.

[0129] In the third embodiment of the electromagnetic induction heating sheet A of the utility model, the second adhesive layer A5 is a composite glue, the thickness of the second adhesive layer A5 is 0.5-7µm, and the second adhesive layer A5 makes the peeling strength between the protective layer A3 and the multi-purpose assembly A2 greater than 4N / 15mm.

[0130] In the third embodiment of the electromagnetic induction heating sheet A of the utility model, the thickness of the electromagnetic induction heating sheet A can be 39µm to 2.5mm; and the thickness of the multi-purpose assembly A2 is 6-300µm.

[0131] In the third embodiment of the electromagnetic induction heating sheet A of the utility model, the electromagnetic induction heating sheet roll material adopts a wireless information integrated sheet roll material, and the production method of the electromagnetic induction heating sheet A comprises the following steps:

[0132] Step one: the composite surface of the base layer roll material is compounded with the composite surface of the metal foil roll material through the first adhesive layer A4 to obtain an electromagnetic induction heating sheet blank roll material;

[0133] Step two: the metal foil of the electromagnetic induction heating sheet blank roll material is etched to form a metal layer A21, the metal layer A21 has an antenna A211 and an electromagnetic induction heating part A212 arranged around the antenna A211 to obtain an electromagnetic induction heating sheet blank two roll material;

[0134] Step three: connecting the wireless information chip A22 and the antenna A211 of the metal layer A21 of the electromagnetic induction heating sheet blank two-roll material, and protecting the wireless information chip A22 by dispensing glue, so as to obtain the electromagnetic induction heating sheet blank three-roll material; the wireless information chip A22 and the antenna A211 of the metal layer A21 can be connected by a bonding machine, and the wireless information chip A22 and the antenna A211 of the metal layer A21 are connected by the encapsulation glue A24 to protect the wireless information chip A22 and the bonding line connecting the wireless information chip A22 and the antenna A211;

[0135] Step four: the composite surface of the protective layer roll material and the electromagnetic induction heating sheet blank three-roll material are compounded with the side opposite to the substrate layer A1 through the second adhesive layer A5, so as to obtain the electromagnetic induction heating sheet roll material.

[0136] The fourth embodiment of the electromagnetic induction heating sheet A of the utility model:

[0137] Cooperation Figure 16 As shown in the figure, the fourth embodiment of the electromagnetic induction heating sheet A of the utility model is different from the first embodiment of the electromagnetic induction heating sheet A of the utility model in that: in the fourth embodiment of the electromagnetic induction heating sheet A of the utility model, the electromagnetic induction heating sheet A also adopts a wireless information integrated sheet, the wireless information integrated sheet further comprises a protective layer A3 and a second adhesive layer A5, the protective layer A3 is compounded with the substrate layer A1 and the multi-purpose assembly A2 through the second adhesive layer A5, and the protective layer A3 completely covers the multi-purpose assembly A2, the protective layer A3 can effectively protect the multi-purpose assembly A2, so that the electromagnetic induction heating sheet A of the utility model will not have the problem of damage to the multi-purpose assembly 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; the multi-purpose assembly A2 further comprises a battery A23, the battery A23 is electrically connected with the wireless information chip A22, the thickness of the battery A23 can be greater than or less than the thickness of the antenna A211 according to the material of the battery A23, application requirements and the allowable space between the container and the cover, the battery A23 can stably supply power to the wireless information chip A22, and the working stability of the wireless information chip A22 is improved; wherein the battery A23 can supply power to the wireless information chip A22 according to the rules preset by the built-in software or the instructions transmitted by the external reader, so that the wireless information chip A22 works regularly and records the working parameters (such as temperature parameters and position parameters) regularly, which facilitates effective management and control of logistics (such as cold chain logistics).

[0138] In the fourth embodiment of the electromagnetic induction heating sheet A, the thickness of the electromagnetic induction heating sheet A can be 50 µm to 2.5 mm; the thickness of the multi-purpose assembly A2 is 6 µm to 2.5 mm.

[0139] In the fourth embodiment of the electromagnetic induction heating sheet A, the electromagnetic induction heating sheet roll adopts a wireless information integrated sheet roll, and the production method of the electromagnetic induction heating sheet A comprises the following steps:

[0140] Step one: the composite surface of the base layer roll and the composite surface of the metal foil roll are compounded through the first adhesive layer A4 to obtain an electromagnetic induction heating sheet blank roll;

[0141] Step two: the metal foil of the electromagnetic induction heating sheet blank roll is etched to form a metal layer A21, which has an antenna A211 and an electromagnetic induction heating part A212 surrounding the antenna A211, to obtain an electromagnetic induction heating sheet blank two roll;

[0142] Step three: the wireless information chip A22 of the electromagnetic induction heating sheet blank two roll is connected with the antenna A211 of the metal layer A21, the battery A23 is electrically connected with the wireless information chip A22, and the wireless information chip A22 is protected by dispensing glue, thereby obtaining an electromagnetic induction heating sheet blank three roll; wherein the wireless information chip A22 and the antenna A211 of the metal layer A21 can be connected by bonding, 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 encapsulation glue A24;

[0143] Step four: the composite surface of the protective layer roll and the electromagnetic induction heating sheet blank three roll and the side opposite to the base layer A1 are compounded through the second adhesive layer A5, thereby obtaining an electromagnetic induction heating sheet roll.

[0144] The fifth embodiment of the electromagnetic induction heating sheet A of the utility model:

[0145] Cooperation Figure 17As shown, the fifth embodiment of the electromagnetic induction heating sheet A of the utility model differs from the first to fourth embodiments of the electromagnetic induction heating sheet A of the utility model in that: in the fifth embodiment of the electromagnetic induction heating sheet A of the utility model, the electromagnetic induction heating sheet A also adopts a wireless information integrated sheet, the electromagnetic induction heating part A212 of the metal layer A21 of the wireless information integrated sheet is separated from the antenna A211, the interval between the electromagnetic induction heating part A212 of the metal layer A21 and the antenna A211 is 0.1mm-3mm, the metal layer A21 further comprises 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 integrally arranged, 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, since the size of the physical connection bridge A213 is very small, it can block most of the heat conduction of the electromagnetic induction heating part A212 to the antenna A211, and only has a little damage to the distance of wireless communication.

[0146] It should be noted that in the above five embodiments of the electromagnetic induction heating sheet A, the electromagnetic induction heating sheet A has a ring cutting line A25, the ring cutting line A25 is located between the antenna A211 and the electromagnetic induction heating part A212 and surrounds the antenna A211, and the ring cutting line A25 is opposite to the ring tearing line 11; the ring cutting line A25 is arranged to enable the user to pull the pull part 132 to drive the electromagnetic induction heating sheet A to tear along the ring cutting line A25. Specifically, the ring cutting line A25 has a plurality of breakpoints, the part of the electromagnetic induction heating sheet A corresponding to the breakpoints of the ring cutting line A25 is not cut, and the length of the breakpoint is 0.02mm to 0.9mm, the part of the electromagnetic induction heating sheet A corresponding to the part of the ring cutting line A25 except the breakpoint is completely cut, and each breakpoint of the ring cutting line A25 is opposite to each breakpoint of the ring tearing line 11, so that the structural stability of the electromagnetic induction heating sheet A can be ensured, the ring cutting line A25 can be cut by a continuous arrangement of a cutting knife (i.e. cut by a cutting knife at one time), and the cutting knife has an integral blade corresponding to the ring cutting line A25.

[0147] The electromagnetic induction heating sheet A is not limited to the above four embodiments of the electromagnetic induction heating sheet A; the electromagnetic induction heating sheet A can also adopt the commonly used aluminum foil, so that the electromagnetic induction heating sheet A only has the electromagnetic induction heating function.

[0148] The above embodiments and drawings are not limited to the product shape and style of the present application, and any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the scope of the present application.

Claims

1. A ring-pull closure gasket, characterised in that: The functional layer and the adhesive layer are 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 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, which divides the functional layer into an outer ring area and an inner ring area, the inner ring area including a pulling neck connected to the outer ring area, a pulling part connected to the pulling neck, and a hollow area between the pulling part and the pulling neck; the release block is opposite to the pulling part; The functional layer is further provided with a connecting tear line connecting one side of the pulling part and the annular tear line.

2. A ring-pull closure gasket according to claim 1, wherein: The adhesive makes the peeling strength between the bottom surface of the functional layer and the top surface of the adhesive layer greater than 12 N / 15 mm.

3. A ring-pull closure gasket according to claim 2, wherein: The adhesive is dry composite glue or hot melt adhesive, and the material of the hot melt adhesive is one of PE, PP, EMAC, EEA, EMAA, EAA and EMMA.

4. A ring-pull closure gasket as claimed in claim 1, wherein: The functional layer includes a mask and a connecting film which are sequentially bonded from top to bottom; the mask is at least one of PI layer, PEN layer, PET layer, PE layer, PA layer and PP layer; the connecting film is at least one of PET layer, EPE layer, EPP layer, PP layer, PA layer and PE layer.

5. A ring-pull closure gasket according to claim 4, wherein: The functional layer further includes a foaming film and / or a foaming plate film between the mask and the connecting film; the foaming film is EPE layer or EPP layer; the foaming plate film is EPE layer or EPP layer.

6. A ring-pull closure gasket according to claim 4 or 5, wherein: The functional layer further includes a composite film between the mask and the connecting film, and the composite film is at least one of PEN layer, PET layer, PP layer, PA layer and PE layer.

7. A ring-pull closure gasket as claimed in claim 4, wherein: The adhesive layer includes the electromagnetic induction heating sheet and the sealing layer which are sequentially bonded from top to bottom; the bottom surface of the connecting film is directly coated with the release block, and the coating area of the release block is greater than the area where the pulling part is located.

8. A ring-pull closure gasket as claimed in claim 4, wherein: The adhesive layer includes the electromagnetic induction heating sheet and the sealing layer which are sequentially bonded 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 greater than the area where the pulling part and the hollow area are located.

9. A ring-pull closure gasket as claimed in claim 1, wherein: The functional layer includes a mask, the electromagnetic induction heating sheet and a connecting film which are sequentially bonded from top to bottom; the mask is at least one of PI layer, PEN layer, PET layer, PE layer, PA layer and PP layer; the connecting film is at least one of PET layer, EPE layer, EPP layer, PP layer, PA layer and PE layer.

10. A ring-pull closure gasket according to claim 9, wherein: The bottom surface of the connecting film is directly coated with the release block, and the coating area of the release block is greater than the area where the pulling part is located.

11. A ring-pull closure gasket as claimed in claim 1, wherein: The annular tear line and the connecting tear line are continuous cutting lines with multiple breakpoints, the part of the functional layer corresponding to the breakpoints of the continuous cutting line is not completely cut in the vertical direction, and the part of the functional layer corresponding to the part of the continuous cutting line other than the breakpoints is completely cut.

12. A ring-pull closure gasket as claimed in claim 1, wherein: The annular tear line and the link tear line adopt a continuous cutting line with multiple breakpoints, the functional layer part corresponding to the breakpoint of the continuous cutting line is not cut and the length of the breakpoint is 0.02mm to 0.9mm, and the functional layer part corresponding to the part of the continuous cutting line other than the breakpoint is completely cut.

13. A ring-pull closure gasket as claimed in claim 1, wherein: The electromagnetic induction heating sheet adopts an aluminum foil.

14. A ring-pull closure gasket as claimed in claim 1, wherein: The electromagnetic induction heating sheet adopts a wireless information integrated sheet, the wireless information integrated sheet comprises a substrate layer, a first adhesive layer and a multi-purpose component; the multi-purpose component comprises a metal layer and a wireless information chip; the metal layer is matched on the substrate layer through the first adhesive layer, the first adhesive layer is arranged between the metal layer and the substrate layer, the metal layer has an antenna and an electromagnetic induction heating part surrounding the antenna, and the antenna is electrically connected with the wireless information chip.

15. A ring-pull closure gasket according to claim 14, wherein: The electromagnetic induction heating part and the antenna are spaced apart.

16. A ring-pull closure gasket according to claim 15, wherein: The electromagnetic induction heating part and the antenna of the metal layer are spaced apart by 0.1mm to 3mm.

17. A ring-pull closure gasket as claimed in claim 15, wherein: The electromagnetic induction heating part and the antenna are fully spaced apart.

18. A ring-pull closure gasket as claimed in claim 17, wherein: The metal layer further comprises at least one physical connection bridge connecting the antenna and the electromagnetic induction heating part.

19. A ring-pull closure gasket as claimed in claim 14 or 16 or 18, wherein: The wireless information integrated sheet further comprises a protective layer and a second adhesive layer, the protective layer is combined with the substrate layer and the multi-purpose component through the second adhesive layer, and the protective layer completely covers the multi-purpose component.

20. A ring-pull closure gasket as claimed in claim 14 or 15 or 17, wherein: The electromagnetic induction heating sheet has a ring cutting line with multiple breakpoints, the part of the electromagnetic induction heating sheet corresponding to the breakpoint of the ring cutting line is not cut and the length of the breakpoint is 0.02mm to 0.9mm, and the part of the electromagnetic induction heating sheet corresponding to the part of the ring cutting line other than the breakpoint is completely cut; the ring cutting line is located between the antenna and the electromagnetic induction heating part and surrounds the antenna, the ring cutting line is opposite to the annular tear line, and each breakpoint of the ring cutting line is opposite to each breakpoint of the annular tear line.

21. A ring-pull closure gasket as claimed in claim 1, wherein: The release coating is wax, gloss oil or silicone oil.

22. A ring-pull closure gasket as claimed in claim 1, wherein: The adhesive 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.

23. A ring-pull closure gasket as claimed in claim 1, wherein: The adhesive sealing layer comprises an adhesive sealing film and an adhesive agent; the adhesive sealing film is at least one of PE film, PP film, PA film, PVDC film, EVOH film and PET film; and the adhesive agent is arranged between the adhesive sealing film and the electromagnetic induction heating sheet.

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