sealing film

Abstract

This utility model provides a sealing film comprising: a wireless information anti-counterfeiting film; and a sealing layer, which is a hot melt adhesive or a combination of an adhesive coating and an adhesive film, and is laminated with the wireless information anti-counterfeiting film. The hot melt adhesive and the adhesive film are used to seal the container, and the adhesive coating is located between the adhesive film and the wireless information anti-counterfeiting film. The wireless information anti-counterfeiting film comprises: a base film; an information layer having an antenna and a chip that are interconnected; and a first adhesive layer located between the base film and the information layer. This sealing film enhances the anti-counterfeiting effect.

Description

Technical Field

[0001] This utility model relates to a sealing film, and more particularly to a sealing film that can effectively prevent counterfeiting. Background Technology

[0002] To enable product traceability, information tags (usually RFID tags) with read / write capabilities are attached to product packaging. These tags contain product information such as model number, production history, inventory, and logistics details. For example, some have suggested attaching the information tags directly to the neck or belly area of ​​the product container.

[0003] Radio frequency identification (RFID) tags consist of an antenna for receiving / transmitting signals and a chip for processing radio frequency signals. The chip can store various product information, such as production and transportation information, facilitating traceability and anti-counterfeiting. Furthermore, by using a reader to read the RFID tags on the outside of containers, it is possible to manage and control the product's production history, inventory, and logistics status. Utility Model Content

[0004] However, because previous technologies involved attaching the information label directly to the neck or belly area of ​​the product container, users could easily remove or tear it off for reuse. Even worse, some users would remove the label and reattach it to other product containers, rendering the label ineffective at preventing counterfeiting.

[0005] Therefore, the inventors of this utility model conceived of integrating information tags (radio frequency identification tags) into the sealing film. By tearing open the sealing film, the information tags can be removed or destroyed, thereby preventing the information tags from being improperly reused and thus improving anti-counterfeiting capabilities.

[0006] In addition, the inventors of this utility model have also discovered that by using a specific hot melt adhesive to seal the container, it is not necessary to use electromagnetic induction sealing equipment, which is costly and consumes a lot of energy, thereby achieving the effect of saving costs.

[0007] Specifically, to solve the above problems, a sealing film according to an embodiment of the present invention includes: a wireless information anti-counterfeiting film; and a sealing layer, which is a hot melt adhesive or a combination of an adhesive coating and an adhesive film, and is composited with the wireless information anti-counterfeiting film, wherein the hot melt adhesive and the adhesive film are used to seal the container, and the adhesive coating is located between the adhesive film and the wireless information anti-counterfeiting film; wherein the wireless information anti-counterfeiting film includes: a base film; an information layer having an antenna and a chip that are interconnected; and a first adhesive layer located between the base film and the information layer.

[0008] In an embodiment, the wireless information anti-counterfeiting film further includes: a protective layer located on the side of the information layer away from the base film; and a second adhesive layer located between the information layer and the protective layer.

[0009] In the embodiments, the material of the protective layer is selected from any one of polyethylene terephthalate (PET), polypropylene (PP), polyethylene (PE), polyamide (PA), polyvinylidene chloride (PVDC), ethylene-vinyl alcohol copolymer (EVOH), polyethylene naphthalate (PEN), and polyimide (PI).

[0010] In an embodiment, a surface film is also included, which is located above or below the wireless information anti-counterfeiting film, and the material of the surface film is selected from any one of PP, PET, PE, PA, PEN and PI.

[0011] In an embodiment, a barrier film is also included, which is located below the surface film, and the material of the barrier film is selected from any one of PET, PP, PE, Saranex (a product of Dow Company), PA, PVDC and EVOH.

[0012] In one embodiment, a self-adhesive sticker is also included, which is applied under the wireless information anti-counterfeiting film to form a self-adhesive sticker for the wireless information anti-counterfeiting film.

[0013] In the embodiments, the hot melt adhesive is selected from any one of PE, PP, ethylene / vinyl acetate copolymer (EVA), polyisobutylene (PIB), ethylene-ethyl acrylate (EEA), ethylene-acrylic acid copolymer (EAA), ethylene-methacrylic acid copolymer (EMAA), ethylene-methyl methacrylate copolymer (EMMA), ethylene-methyl acrylate copolymer (EMAC), polyacrylate, polyacetate, and ethylene-butyl acrylate (EBA).

[0014] Furthermore, in this embodiment, the adhesive coating is a dry composite adhesive; the sealing film is selected from any one of paper, PE, PP, PA, PVDC, EVOH, and PET.

[0015] In this embodiment, the antenna is made of any one of aluminum, conductive ink, and conductive carbon-based materials.

[0016] In the embodiments, the material of the base film is selected from any one of paper, PI, PEN, PET, polycarbonate (PC), PP and PE.

[0017] Additionally, in the embodiments, the chip is selected from at least one of the group consisting of 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.

[0018] This utility model addresses the aforementioned problems and aims to provide a sealing film that enhances anti-counterfeiting properties.

[0019] Furthermore, in a preferred embodiment, cost savings can be achieved by using a specific hot melt adhesive to seal the container. Attached Figure Description

[0020] Figure 1 This is a cross-sectional schematic diagram of a sealing film according to an embodiment of the present invention.

[0021] Figure 2 This is a cross-sectional schematic diagram of the sealing layer of a modified embodiment of this utility model.

[0022] Figure 3 This is a cross-sectional schematic diagram of another wireless information anti-counterfeiting film of this utility model.

[0023] Figure 4 This is a cross-sectional schematic diagram of a sealing film according to another embodiment of the present invention.

[0024] Figure 5 This is a cross-sectional schematic diagram of a sealing film according to another embodiment of the present invention.

[0025] Figure 6 This is a plan view illustrating a specific example of the information layer of this utility model.

[0026] Figure Labels

[0027] 1,1' Wireless Information Anti-counterfeiting Film

[0028] 11 Base film

[0029] 12 First Paste Layer

[0030] 13 Information Layer

[0031] 131 chip

[0032] 132 antenna

[0033] 14 Second Paste Layer

[0034] 15 Protective Layers

[0035] 2,2' Sealing layer

[0036] 21. Applying coating

[0037] 22 Sealing film

[0038] 3 Surface film

[0039] 4. Barrier membrane

[0040] 100, 100', 100” sealing film Detailed Implementation

[0041] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0042] Unless otherwise stated herein, the term "A to B" as used in the specification and the appended claims includes the meaning of "more than A and less than B". For example, the term "10 to 40% by weight" includes the meaning of "more than 10% by weight and less than 40% by weight".

[0043] [First Embodiment]

[0044] First, please refer to Figure 1 , Figure 1 This is a cross-sectional schematic diagram of a sealing film 100 according to an embodiment of the present invention. Figure 1 As shown, a sealing film 100 according to an embodiment of the present invention includes: a wireless information anti-counterfeiting film 1 and a sealing layer 2, wherein the sealing layer 2 is composite with the wireless information anti-counterfeiting film 1. The following provides a detailed description of each layer.

[0045] <Wireless Information Anti-counterfeiting Film>

[0046] like Figure 1As shown, the wireless information anti-counterfeiting film 1 includes: a base film 11, a first adhesive layer 12, and an information layer 13. The information layer 13 has an antenna and a chip that are interconnected; the first adhesive layer 12 is located between the base film 11 and the information layer 13 to bond the base film 11 and the information layer 13.

[0047] <<Base Membrane>>

[0048] The base film 11 is used as the initial layer for making the wireless information anti-counterfeiting film. In one specific example, the material of the base film 11 can be at least one selected from the group consisting of paper, PI, PEN, PET, polycarbonate (PC), PP, and PE. Furthermore, the thickness of the base film 11 is preferably 20 to 150 μm, within which the longitudinal tensile strength is relatively high. Additionally, as... Figure 1 As shown, the lower surface of the base film 11 is bonded to the first adhesive layer 12, while the upper surface of the base film 11 can be used as a printing surface to print different patterns.

[0049] <<First Paste Layer>>

[0050] The first adhesive layer 12 is used to bond the base film 11 and the information layer 13. In some specific examples, the first adhesive layer 12 only needs to be able to bond the base film 11 and the information layer to the heating layer 13, and its material can be, for example, a dry composite adhesive. Furthermore, the thickness of the first adhesive layer 12 can be, for example, 0.5 to 7 μm.

[0051] <<Information Layer>>

[0052] Please refer to the above as well. Figure 6 , Figure 6 A plan view illustrating a specific example of the information layer 13 of this utility model. For example... Figure 6 As shown, the information layer 13 has an antenna 132 and a chip 131 that are interconnected. Furthermore, when wireless information transmission is possible, the chip 131 and antenna 132 can transmit data based on the RFID frequency band desired by the user. Figure 6 There are no particular restrictions on the arrangement of the items in any way or other manner.

[0053] On the other hand, the material of antenna 132 can be at least one of the group consisting of aluminum, conductive ink, and conductive carbon-based materials. The conductive carbon-based material can be carbonized paper. Furthermore, chip 131 can have a unique identification code and can be selected according to the purpose; for example, it can be at least one of the group consisting of radio frequency identification near field communication (RFID_NFC) chips, radio frequency identification high frequency (RFID_HF) chips, radio frequency identification ultra-high frequency (RFID_UHF) chips, or radio frequency identification microwave (RFID_MW) chips, without particular limitation. These chips can all achieve wireless information communication functions with a matched antenna.

[0054] Furthermore, when applied to sealing films containing batteries, the thickness of the information layer 13 can be from 6 μm to 2.5 mm; while when applied to sealing films without batteries, the thickness of the information layer 13 can be from 6 to 300 μm.

[0055] In addition, although Figure 1 The image shows the base film 11 on top and the information layer 13 on the bottom, but the order of the base film 11 and the information layer 13 can be reversed as needed, i.e., the base film 11 is on the bottom and the information layer 13 is on top. In this case, with the information layer 13 on the top layer, the information layer 13 can be protected by the bottle cap (not shown) to prevent the chip or antenna in the information layer 13 from being damaged by external forces.

[0056] <Sealing layer>

[0057] Next, the sealing layer 2 may be a hot melt adhesive or a combination of an adhesive coating and a sealing film, wherein the hot melt adhesive and the sealing film are used to seal the container. Also, as... Figure 1 As shown, in one specific example, the sealing layer 2 may be a single layer of hot melt adhesive, and the hot melt adhesive may be selected from at least one of the group consisting of PE, PP, ethylene / vinyl acetate copolymer (EVA), polyisobutylene (PIB), ethylene-ethyl acrylate (EEA), ethylene-acrylic acid copolymer (EAA), ethylene-methacrylic acid copolymer (EMAA), ethylene-methyl methacrylate copolymer (EMMA), ethylene-methyl acrylate copolymer (EMAC), polyacrylate, polyacetate, and ethylene-butyl acrylate (EBA). Furthermore, in one specific example, the thickness of the hot melt adhesive may be 4–100 μm.

[0058] The hot melt adhesive described above eliminates the need for an adhesive coating. Furthermore, certain combinations of these hot melt adhesives can achieve a continuous seal even when the contents of the glass container contain water, and also when the contents contain spices, honey, garlic, or chili peppers.

[0059] In addition, please refer to the following: Figure 2 , Figure 2 This is a cross-sectional schematic diagram of the sealing layer 2' of a modified embodiment of this utility model. Also, as... Figure 2 As shown, the sealing layer 2' can be a combination of an adhesive coating 21 and an adhesive sealing film 22, wherein the adhesive coating 21 can be a dry composite adhesive, and the adhesive sealing film 22 can be at least one of the group consisting of free paper, PE, PP, PA, PVDC, EVOH, and PET. Furthermore, in one specific example, the thickness of the adhesive coating 21 can be 2–30 μm, and the thickness of the adhesive sealing film 22 can be 12–100 μm.

[0060] <Wireless Information Anti-counterfeiting Film Self-adhesive Sticker>

[0061] In some specific examples, self-adhesive adhesive (not shown) is applied under the wireless information anti-counterfeiting film 1 in the sealing film 100 to form a self-adhesive patch for the wireless information anti-counterfeiting film, so that the self-adhesive patch for the wireless information anti-counterfeiting film can be easily attached to the top of the film or sealing layer of the container opening. Furthermore, the term "self-adhesive patch for wireless information anti-counterfeiting film" can be used to refer to embodiments where "self-adhesive adhesive is applied under the wireless information anti-counterfeiting film," and the self-adhesive patch for the wireless information anti-counterfeiting film can be easily attached to, for example, the top of the film or sealing layer of the present invention. In some specific examples, the thickness of the self-adhesive adhesive can be 2 to 30 μm. Furthermore, the aforementioned self-adhesive labels may be pressure-sensitive adhesives known to those skilled in the art to which this application pertains. Such pressure-sensitive adhesives can be coated onto paper, film, or composite film using a coating machine, and are commonly found in various stationery stores' self-adhesive labels, colorful cartoon stickers, baggage claim tags affixed to boarding passes, etc.

[0062] The sealing layer of this invention can be combined with a wireless information anti-counterfeiting film to seal the container and preserve its contents.

[0063] [Variation Example]

[0064] Next, please refer to Figure 3 , Figure 3 This is a cross-sectional schematic diagram of another wireless information anti-counterfeiting film 1' of this utility model. (See diagram below.) Figure 3As shown, the wireless information anti-counterfeiting film 1 can also be a wireless information anti-counterfeiting film 1', which, in addition to the base film 11, the first adhesive layer 12, and the information and heating layer 13 mentioned above, may also include a protective layer 15 and a second adhesive layer 14. The protective layer 15 is located on the side of the information layer 13 away from the base film 11. Furthermore, the second adhesive layer 14 is located between the information layer 13 and the protective layer 15, serving as a layer for bonding the information layer 13 and the protective layer 15.

[0065] In some specific examples, the second adhesive layer 14 only needs to be able to bond the information layer 13 and the protective layer 15, and its material can be, for example, a dry composite adhesive, without particular limitation. Furthermore, the thickness of the second adhesive layer 14 can be 0.5 to 7 μm.

[0066] <<Protective Layer>>

[0067] Next, the protective layer 15 will be described. The protective layer 15 protects the information layer 13 (i.e., chip 131, antenna 132, and a separately added battery) from external damage to the chip 131 and battery, thus preventing them from affecting the wireless information transmission capability. The material of the protective layer 15 can be at least one selected from the group consisting of polyethylene terephthalate (PET), polypropylene (PP), polyethylene (PE), polyamide (PA), polyvinylidene chloride (PVDC), ethylene-vinyl alcohol copolymer (EVOH), polyethylene naphthalate (PEN), and polyimide (PI). Furthermore, in some preferred embodiments, the thickness of the protective layer 15 can be, for example, 12 to 100 μm.

[0068] Furthermore, either the upper or lower surface of the protective layer 15 can be used as a printing surface. Therefore, although in Figure 3 The diagram shows a configuration where the base film 11 is on top and the protective layer 15 is on the bottom (with the lower surface of the protective layer 15 serving as the printing surface). However, the order of the base film 11 and the protective layer 15 can be reversed as needed, i.e., the base film 11 is on the bottom and the protective layer 15 is on top (with the upper surface of the protective layer 15 serving as the printing surface). On the other hand, in applications... Figure 3 In the case of the wireless information anti-counterfeiting film 1', the protective layer 15 will be in contact with the sealing layer 2. At this time, the protective layer 15 can also protect the information layer 13 from being affected by volatile substances or moisture from the contents of the container.

[0069] [Second Embodiment]

[0070] Next, please refer to Figure 4 , Figure 4 This is a cross-sectional schematic diagram of the sealing film 100' according to another embodiment of this utility model. Figure 4As shown, in another embodiment of the present invention, the sealing film 100' comprises, from top to bottom: a surface film 3, a wireless information anti-counterfeiting sheet 1, and a sealing layer 2. In this embodiment, the wireless information anti-counterfeiting sheet 1 (or may be a wireless information anti-counterfeiting sheet 1') and the sealing layer 2 (or may be a sealing layer 2') are the same as those described in the first embodiment above, so their description is omitted.

[0071] <<Surface Film>>

[0072] The upper or lower surface of the surface film 3 can be a printing surface to print different patterns, and it can be located above or below the wireless information anti-counterfeiting film. In one specific example, the composition of the surface film 3 is at least one of the group consisting of PP, PET, PE, PA, PEN and PI. Furthermore, the thickness of the surface film 3 is preferably 12 to 150 μm, within which the tensile strength is relatively high, and the surface is smooth and glossy.

[0073] In addition, although Figure 4 The image shows the surface film 3 on top of the wireless information anti-counterfeiting sheet 1, but the order of the surface film 3 and the wireless information anti-counterfeiting sheet 1 can be reversed as needed, i.e., the surface film 3 is placed below the wireless information anti-counterfeiting sheet 1 (for example, as described later). Figure 5 ).

[0074] [Third Embodiment]

[0075] Then, please refer to Figure 5 , Figure 5 This is a cross-sectional schematic diagram of a sealing film 100” according to another embodiment of this utility model. Figure 5 As shown, the sealing film 100” of another embodiment of the present invention comprises, from top to bottom: a wireless information anti-counterfeiting film 1, a surface film 3, a barrier film 4, and a sealing layer 2. In this embodiment, the surface film 3, the wireless information anti-counterfeiting film 1 (or may be a wireless information anti-counterfeiting film 1'), and the sealing layer 2 (or may be a sealing layer 2') are the same as those described in the first to second embodiments above, so their description is omitted.

[0076] <<Barrier Membrane>>

[0077] The barrier film 4 is located below the surface film 3, and the material of the barrier film 4 can be selected from at least one of the group consisting of PET, PP, PE, Saranex (a product of DOW), PA, PVDC, and EVOH. The thickness of the barrier film 4 can be 12–100 μm. This barrier film further blocks moisture and oxygen.

[0078] Furthermore, although not illustrated, the layers of the above embodiments can be composited in various ways (e.g., adhesive, bonding, or connection).

[0079] [Making sealing film]

[0080] Based on the following steps, a sealing film related to the first embodiment is produced.

[0081] First, apply an adhesive coating to the lower surface of the wireless information anti-counterfeiting film roll and dry-laminate it with the sealing film roll for more than 24 hours in a curing chamber, or apply hot melt adhesive to the lower surface of the wireless information anti-counterfeiting film roll to make a sealing film roll.

[0082] The sealing film roll is cut to the shape of a wireless information anti-counterfeiting film on its surface to obtain the sealing film of the required size according to the customer's needs, thus obtaining the sealing film related to the first embodiment.

[0083] The peel strength between the two layers of material bonded by the dry laminating coating is greater than 5 N / 15 mm. The temperatures of the five sections of the drying tunnel above the dry laminating machine are 60–65℃, 65–70℃, 70–75℃, 75–80℃, and 80–85℃, respectively. The temperature of the laminating roller of the dry laminating machine is 50–60℃. The temperature of the curing chamber is 50–55℃.

[0084] In addition, based on the sealing film related to the first embodiment, as long as an adhesive is applied to the lower surface of the surface film roll and dry-laminated with the upper surface of the wireless information anti-counterfeiting film roll of the first embodiment, and then placed in a curing chamber for more than 24 hours, the sealing film related to the second embodiment can be produced.

[0085] Furthermore, based on the sealing film related to the second embodiment, as long as the adhesive is applied to the lower surface of the surface film roll of the second embodiment and the composite surface of the barrier film roll is dry-laminated, and then placed in a curing chamber for more than 24 hours, the sealing film related to the third embodiment can be produced.

[0086] In addition, regarding the method of lamination, the aforementioned dry lamination method or existing methods such as bonding and pressing can be used, without any particular restrictions.

[0087] Next, the production of the wireless information anti-counterfeiting film roll can be described as follows.

[0088] First, a composite adhesive (first adhesive layer) is applied to the composite surface of the base film roll, and then laminated with the composite surface of the metal foil roll to create a roll of wireless information anti-counterfeiting film blank. Second, the metal foil of the wireless information anti-counterfeiting film blank roll is etched to connect the antenna and chip electrically. Then, chip encapsulation protective adhesive is used with a dispensing machine to encapsulate the chip and the connecting wires between the chip and the antenna. At this point, the metal foil of the wireless information anti-counterfeiting film blank roll forms the information layer, and the wireless information anti-counterfeiting film blank roll becomes the wireless information anti-counterfeiting film roll.

[0089] The peel strength between the two layers of materials bonded by the composite adhesive is greater than 4N / 15mm.

[0090] In addition, if a battery is to be added to the information layer, a welding machine or conductive adhesive can be used to process the battery cells and the chip into an electrical connection.

[0091] On the other hand, based on the aforementioned wireless information anti-counterfeiting film roll, a dry composite adhesive (second adhesive layer) is applied to the composite surface of the protective layer roll, and then dry-laminated with the information layer surface (the surface away from the base film) of the wireless information anti-counterfeiting film roll. After curing in a curing chamber for more than 24 hours, a wireless information anti-counterfeiting film roll related to another example can be produced.

[0092] It should be noted that the above description is only a specific example, and the manufacturing order of the above layers is not particularly limited. Furthermore, although the manufacturing of the sealing film of the first to third embodiments is mainly described here, the sealing layer of the modified embodiment can also be used as a substitute for the sealing layer in the above embodiments, and other composite methods (adhesion, bonding, coating, lamination or connection, etc.) can be used as substitutes for dry composite.

[0093] This utility model is not limited to the above embodiments. Various modifications can be made within the scope of the claims. Embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included within the technical scope of this utility model.

Claims

1. A sealing film, characterized in that, Include: Wireless information anti-counterfeiting film; and A sealing layer, which is a hot melt adhesive or a combination of an adhesive coating and a sealing film, is composited with the wireless information anti-counterfeiting film, wherein the hot melt adhesive and the sealing film are used to seal the container, and the adhesive coating is located between the sealing film and the wireless information anti-counterfeiting film; in The wireless information anti-counterfeiting film includes: Base film; The information layer, which has interconnected antennas and chips; and The first adhesive layer is located between the base film and the information layer.

2. The sealing film according to claim 1, characterized in that, The wireless information anti-counterfeiting film also includes: A protective layer located on the side of the information layer away from the base film; and The second adhesive layer is located between the information layer and the protective layer.

3. The sealing film according to claim 2, characterized in that, The material of the protective layer is selected from any one of polyethylene terephthalate, polypropylene, polyethylene, polyamide, polyvinylidene chloride, ethylene-vinyl alcohol copolymer, polyethylene naphthalate, and polyimide.

4. The sealing film according to claim 1, characterized in that, It also includes a surface film located above or below the wireless information anti-counterfeiting film, and the material of the surface film is selected from any one of PP, PET, PE, PA, PEN and PI.

5. The sealing film according to claim 4, characterized in that, It also includes a barrier film located below the surface film, and the barrier film is made of any one of PET, PP, PE, Salanex, PA, PVDC and EVOH.

6. The sealing film according to claim 1, characterized in that, It also includes self-adhesive material coated under the wireless information anti-counterfeiting film to form a self-adhesive patch for the wireless information anti-counterfeiting film.

7. The sealing film according to any one of claims 1 to 6, characterized in that, The hot melt adhesive is selected from any one of PE, PP, ethylene / vinyl acetate copolymer, polyisobutylene, ethylene ethyl acrylate, ethylene acrylic copolymer, ethylene-methacrylic acid copolymer, ethylene-methyl methacrylate copolymer, ethylene-methyl acrylate copolymer, polyacrylate, acrylic copolymer, and ethylene butyl acrylate.

8. The sealing film according to any one of claims 1 to 6, characterized in that, The adhesive coating is a dry composite adhesive; the sealing film is selected from any one of paper, PE, PP, PA, PVDC, EVOH and PET.

9. The sealing film according to any one of claims 1 to 6, characterized in that, The antenna is made of any one of aluminum, conductive ink, and conductive carbon-based materials.

10. The sealing film according to any one of claims 1 to 6, characterized in that, The base film is made of any one of paper, PI, PEN, PET, polycarbonate, PP and PE.

11. The sealing film according to any one of claims 1 to 6, characterized in that, The chip is selected from at least one of the group consisting of radio frequency identification (RFID) near-field communication chips, RFID high-frequency chips, RFID ultra-high-frequency chips, or RFID microwave chips.

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