JP2002366038A - Ovd seal, producing method thereof and sticking method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an OVD seal which is effective for the inhibition of a dishonest act due to the re-sticking such as prevention of the re-sticking accompanied by the dishonest act even with respect to such a dishonest act as to attack the adhesive by using a release agent on the market, and a sticking method thereof. SOLUTION: In this OVD seal, at least, two layers of an OVD layer and an adhesive layer are laminated on a substrate of polymer resin material in this order and the adhesive layer is formed by using both of a thermosensitive adhesive part and a pressure sensitive adhesive part. Therein, in particular, the adhesive layer is constituted in such a manner that the thermosensitive adhesive layer is continuously formed and is partially covered with the pressure sensitive adhesive layer, the OVD layer is made to be easily stripped from the substrate and the peel strength between both is <=9.8 N at 300 mm/min in 500 mm width.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seal for preventing re-sticking, and more particularly to an OVD in which colors and images change according to the direction of light such as a hologram used for authentication of brand protection or the like in recent years. The present invention relates to an OVD seal that is used and that is effective for preventing replacement of the OVD seal and a method of attaching the OVD seal.

[0002]

2. Description of the Related Art A hologram, a diffraction grating, and a thin film having different optical characteristics, which can express a three-dimensional image or a special decoration image using light interference, cause a color change (color shift) depending on a viewing angle. OVD like multilayer thin film
(Optical Variable Device)
Is being developed. Since these OVDs give a unique impression such as a three-dimensional image and a color shift, they have an excellent decorative effect and are used for general printed materials such as various packaging materials, picture books and catalogs.

[0003] Further, since this OVD requires a high level of manufacturing technology, it has been used as an effective counterfeit prevention means formed on a part or the whole of credit cards, securities, certificates and the like. In recent years, in addition to securities, it is pasted on software such as sports goods and computer parts and other electrical products software, as a certification seal to prove the authenticity of the product, and as a seal sticker pasted on the package of those products Has also become widely used.

[0004]

The so-called authentication seal or sealing seal is once peeled off, and there is a fear that counterfeiting such that the seal is replaced on another product (article which acts fraud, so-called counterfeit article). A so-called brittle type seal, in which once peeled off, breaks somewhere, has been proposed. For example, utility model registration No. 20
According to No. 32258, a layer using a brittle material is provided in a part of the seal, and if the seal is forcibly peeled off, the layer using the brittle material is broken. Is characterized by the fact that it spreads. However, such a method is disadvantageous in that the adhesive may be easily peeled off, for example, by using a commercially available label peeling agent (such as a seal peeling solution) to damage the adhesive.
have.

The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to make it possible to use a commercially available label release agent to attack an adhesive to perform wrongdoing. An object of the present invention is to provide an OVD seal and a method of attaching the OVD seal, which are effective in preventing improper behavior due to the alteration such as preventing the accompanying alteration.

[0006]

Means provided by the present invention to achieve the above object are as follows. First, an OVD layer and an adhesive layer are laminated on at least one surface of a support.
OV in which the VD layer is located closer to the support than the adhesive layer
A D-seal, wherein the adhesive layer is formed using both a heat-sensitive adhesive part and a pressure-sensitive adhesive part. (Claim 1) The support is not necessarily limited, but it is preferable to use a polymer resin material. By using the polymer resin material in this manner, when the OVD seal is attached to the adherend and the support is left on the adherend, the decorative effect of the OVD layer can be observed and durability is provided. This is effective to give the effect.

Further, the adhesive layer is formed so as to cover a continuous heat-sensitive adhesive layer and at least a part of the heat-sensitive adhesive layer with a pressure-sensitive adhesive. 2. An OVD seal according to item 1. (Claim 2)

The OVD seal according to claim 1 or 2, wherein the OVD layer is easily peeled off from the support. (Claim 3)

The OVD seal according to claim 3, wherein the peel strength between the support and the OVD layer peels at a peel strength of 9.8 N or less at a width of 500 mm and 300 mm / min. It is. (Claim 4) In this case, it is configured to be easily broken when it is to be peeled.

3. The method according to claim 1, wherein both an easily peelable portion and a hardly peelable portion are provided between the support and the OVD layer.
It is a VD seal. (Claim 5) In this case, the structure is such that when it is to be peeled off, it is partially destroyed, and even if it is to be returned to its original state, it cannot be restored.

6. The O-type semiconductor device according to claim 1, wherein both an easily peelable portion and a hardly peelable portion are provided between the OVD layer and the adhesive layer.
It is a VD seal. (Claim 6)

On a support made of a polymer resin material, O
A method for producing an OVD seal in which at least two layers of a VD layer and an adhesive layer are laminated in this order, the adhesive layer comprising:
A method of manufacturing an OVD seal, wherein the method is performed by using both a heat-sensitive adhesive part and a pressure-sensitive adhesive part.
(Claim 7)

[0013] Then, after temporarily attaching to an object using the OVD seal according to any one of claims 1 to 6,
This is a method for attaching an OVD seal, wherein the OVD seal is thermally fused by heating from the outside. (Claim 8)

In the case of the present invention, the adhesive layer is formed by using a heat-sensitive adhesive part and a pressure-sensitive adhesive part, and it is difficult or impossible to peel it off with a commercially available label release agent. Even if it is peeled off, it is easily broken, and it is an effective seal for preventing replacement. In particular, it is excellent in decorativeness, and an OVD seal with an OVD layer that requires advanced technology and cost for forgery We provide the pasting method.

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a sectional view showing the basic structure of an OVD seal according to the present invention, and FIGS. 2 (a), 2 (b), 3 and 4 are shown.
(A), (b) is a figure which shows one structural example of the OVD seal of this invention. Hereinafter, a detailed description will be given with reference to these drawings.

The OVD seal 11 shown in FIG. 1 has a support 1, an OVD layer 2, and an adhesive layer 3 which are sequentially laminated.
FIGS. 2A and 2B are views showing one configuration of the adhesive layer portion, and include a heat-sensitive adhesive portion 4 and a pressure-sensitive adhesive portion 5, respectively. FIG. 3 is a diagram showing a relief type, which is one configuration of the OVD layer 2, and includes an OVD forming layer 6 and an OVD effect layer 7, respectively. 4 (a) and 4 (b)
Is a type of seal that is completely destroyed when it is to be peeled off, and is provided with a peeling layer 8 that is easily peeled between layers, partially or entirely.

The support 1 only needs to have heat resistance and strength so that it does not soften and deform due to heat pressure during sealing. Examples of the material include polyvinyl chloride, polyester, polycarbonate, polymethyl methacrylate, polystyrene, polyethylene, polyethylene terephthalate, polyethylene naphthalate, polypropylene, polyvinyl alcohol, and other synthetic resins, natural resins, paper, and synthetic paper. The body is usable. It is also possible to coat the tough film with a soft thermoplastic resin and remove the film portion after attaching a processing intermediate or a seal to the substrate. The thickness is 2 to 200 μm, preferably 6 to 100 μm, in consideration of operability and workability.
m or a transparent or translucent material is preferable.

When it is desired to improve the adhesion to the OVD layer 2 described later, various coatings such as a corona treatment, a plasma treatment and a frame treatment may be applied. The support may be peeled off after being attached to the adherend. Therefore, if the adhesion to the OVD layer 2 or a separately provided release layer is too good, a release treatment may be performed using a silicone-based / fluorine-based / long-chain aliphatic-based release agent.

Next, the OVD layer 2 will be described. OVD
Is an image using light interference or diffraction, and is a display member that causes a color shift in which the color changes depending on the expression of a stereoscopic image and the viewing angle. Among them, OVDs such as holograms and diffraction gratings include a relief type for recording interference fringes of light on a plane as a fine uneven pattern and a volume type for recording interference fringes in a volume direction. On the other hand, there is a multilayer film method in which thin films of ceramics or metal materials having different optical characteristics are laminated and a color change (color shift) is caused depending on a viewing angle, which is different from a hologram or a diffraction grating.

In consideration of mass productivity and cost among these OVDs, a relief hologram (diffraction grating)
Or a multilayer thin film type is preferable.
D is widely used. For a relief type hologram (diffraction grating), a relief type master plate having a fine concavo-convex pattern is produced by an optical imaging method, and mass production is performed using a nickel press plate whose pattern is duplicated by an electroplating method. That is, this press plate is heated and OVD
The pattern is pressed against the formation layer 6 to duplicate the uneven pattern.

The OVD effect layer 7 is made of a material having a different refractive index from the polymer material constituting the relief surface in order to increase the diffraction efficiency. The material used is Ti having a different refractive index.
High refractive index materials such as O ₂ , Si ₂ O ₃ , SiO, Fe ₂ O ₃ , ZnS, and Al, Sn, Cr, and N having higher reflection effects
Metal materials such as i, Cu, and Au can be used, and these materials can be used alone or in a laminated form. These materials are formed by a known thin film forming technique such as a vacuum evaporation method and a sputtering method.
It is formed at about 000 °.

On the other hand, when the multilayer thin film method is used, as described above, the OVD layer is composed of multilayer thin films having different optical aptitudes, and is formed by laminating a metal thin film, a ceramic thin film, or a composite thin film having both of them. . For example, when thin films having different refractive indices are stacked, a thin film having a high refractive index and a thin film having a low refractive index may be combined, or a specific combination may be alternately stacked. A desired multilayer thin film can be obtained by a combination thereof.

This multilayer thin film layer is made of a material such as ceramics or metal, and is formed by laminating approximately two or more high refractive index materials and a low refractive index material having a refractive index of about 1.5 or less to a predetermined thickness. Things. Examples of materials used below are given. First, as ceramics, Sb ₂ O ₃ (3.
0 = refractive index n: the same applies hereinafter), Fe ₂ O ₃ (2.7), Ti
O ₂ (2.6), CdS (2.6), CeO ₂ (2.
3), ZnS (2.3), PbCl ₂ (2.3), Cd
_{O (2.2), Sb 2 O} 3 (2.0), WO 3 (2.
0), SiO (2.0), Si ₂ O ₃ (2.5), In ₂
O ₃ (2.0), PbO (2.6), Ta ₂ O ₃ (2.
4), ZnO (2.1), ZrO ₂ (2.0), MgO
(1.6), SiO ₂ (1.5), MgF ₂ (1.4),
_{CeF 3 (1.6), CaF 2} (1.3~1.4), Al
F ₃ (1.6), Al ₂ O ₃ (1.6), or GaO
(1.7) and the like, and a thin film of a single metal or an alloy, for example, Al, Fe, Mg, Zn, Au, Ag, Cr, N
i, Cu, or Si. Further, as the organic polymer having a low refractive index, for example, polyethylene (1.
51), polypropylene (1.49), polytetrafluoroethylene (1.35), polymethyl methacrylate (1.49), polystyrene (1.60) and the like. By selecting at least one of these high-refractive-index materials or metal thin films that transmit 30% to 60%, and at least one of low-refractive-index materials, and alternately stacking them at a predetermined thickness,
It shows absorption or reflection for visible light of a specific wavelength.

In the thin film made of metal, the optical characteristics such as the refractive index change depending on the state of the constituent materials and the forming conditions. Therefore, in the embodiment of the present invention, the value under a certain condition is used. . Further, when the OVD forming layer 6 is a volume hologram, besides the above-mentioned optical thin film,
It is also possible to form with a color ink in which a black pigment or the like is mixed in a binder.

The above materials are appropriately selected based on optical characteristics such as refractive index, reflectance, transmittance, etc., weather resistance, interlayer adhesion, etc., and are laminated as thin films to form a multilayer thin film. A known method can be used for the formation method, and the film thickness, the film formation rate, the number of layers, or the optical film thickness (= n · d, n: refractive index, d: film thickness) can be controlled. Formed by a vacuum evaporation method or a sputtering method.

The OVD effect layer 7 can be formed by removing an arbitrary portion or removing an arbitrary portion. The following is an example of a technique for partially providing the OVD effect layer 7.

First, a pattern is printed on the OVD forming layer 6 with an ink using a water-soluble resin (not shown).
After the D effect layer 7 is provided, a method of washing the water-soluble ink portion may be used. Alternatively, a method of performing masking printing after providing the OVD effect layer, and then partially dissolving and removing the OVD effect layer 7 with an alkali or acidic chemical can also be used. Any other known technique can be used as appropriate. By partially providing the effect layer in this way, it is possible to improve the design property, and when peeling off because the adhesion with the adhesive layer is slightly changed, a part is easily peeled, and a part is hardly peeled off. It can also be expected to be more fragile.

The OVD forming layer 6 is a layer for recording a hologram or a diffraction grating, such as a relief hologram in which the surface is recorded as an uneven relief, a volume hologram in which an image is three-dimensionally recorded in the thickness direction, or the like. Known OV
This is a layer having a D image. Among them, a relief type (FIG. 3) is preferable in consideration of mass productivity and cost.

The relief type is a nickel-type nickel-made OVD (hologram or diffraction grating) formed of a fine concavo-convex pattern by an optical imaging method, and the pattern is duplicated by an electroplating method using the OVD as a master plate. Make a press plate. Thereafter, a method of heating and pressing a press plate on the relief layer to copy the concavo-convex pattern is a method in which the copy can be obtained in large quantities and at low cost. When this relief type OVD is used, it is preferable to provide an OVD effect layer having a refractive index different from that of the relief surface in order to increase diffraction efficiency.

The OVD forming layer 6 is required to have a performance capable of being molded by a press plate, and the material may be any of a thermoplastic resin, a thermosetting resin, an ultraviolet ray or an electron beam curable resin. Examples include thermoplastic resins such as acrylic resins, epoxy resins, cellulosic resins, and vinyl resins, and urethanes obtained by adding a polyisocyanate as a crosslinking agent to an acrylic polyol or polyester polyol having a reactive hydroxyl group as a crosslinking agent. Resins, thermosetting resins such as melamine resins and phenolic resins, and ultraviolet or electron beam curable resins such as epoxy (meth) acrylic and urethane (meth) acrylates can be used alone or in combination. In addition, even if the material is other than the above, if it is a known material that can form an OVD image,
Can be used.

When the OVD forming layer 6 is used after peeling the support 1, the OVD forming layer 6 is a layer which comes out on the outermost surface. Therefore, various waxes such as petroleum wax, vegetable wax, stearic acid, etc. Lubricants such as fatty acids, metal salts thereof, and silicone oil, organic fillers such as Teflon (R) powder, polyethylene powder, silicone fine particles and acrylonitrile fine particles, and inorganic fillers such as silica fine particles.

Since these additives also have the function of lowering the strength of the film itself, it is easy to add them to lower the strength. In addition, a release (protection) layer containing the above-mentioned lubricant may be separately provided between the OVD forming layer 6 and the support 1. When the OVD forming layer is easily peeled from the support or when a separate peeling (protection) layer is provided, the peel strength with the support is 300 mm / min at a width of 500 mm.
It is necessary to adjust so as to peel off at a peel strength of 9.8 N or less. If the peel strength is higher than the above-mentioned condition, it is impossible to easily peel, and peeling traces and cohesive failure are caused, and the material cannot be used.

The OVD effect layer 7 is a layer that reflects light on the relief surface, and is composed of Si, T having a high refractive index for reflecting light.
It is also possible to use an inorganic material (may be referred to as ceramic) such as an oxide such as i and Zn, and a sulfide. Further, these materials may be used alone or as a composite laminate, and may be formed by a known thin film forming technique such as a vacuum evaporation method and a sputtering method. The film thickness is preferably 0.5 to 1,000 nm from the problem of reflectance.

If the reflection efficiency can be obtained, a known coating method such as gravure coating, roll coating, die coating, screen printing, or the like is applied to a material such as an organic, organic-inorganic composite, or an organic material in which an inorganic filler is dispersed. Alternatively, it can be formed by a printing method. Any material other than those described above can be appropriately used as long as it is a known material having light reflectivity.

The adhesive layer 3 is a layer for adhering and fixing the OVD seal to the adherend, and a heat-sensitive adhesive to be applied while applying heat to a pressure-sensitive adhesive (adhesive) 5 to be adhered by pressure. 4 used in combination. That is, after temporarily attaching to the adherend once with the pressure-sensitive adhesive part 5,
The heat-sensitive adhesive portion 4 is melted by external heating means, and is fused to the adherend.

The former pressure-sensitive adhesive 5 is an adhesive which is instantaneously adhered to the other party with a light pressure such as a finger pressure, and is also called an adhesive. Examples of this include natural rubber, isoprene rubber, styrene-butadiene rubber, butyl rubber, rubber-based adhesives,
Acrylic adhesives such as ethyl acrylate and butyl acrylate are exemplified.

On the other hand, the latter heat-sensitive adhesive 4, which is softened and melted by heat and integrated with the surface of the adherend, is usually a thermoplastic resin such as an acrylic resin or a urethane resin.
An epoxy resin, a polyester resin, a vinyl resin, or the like may be used by adding a low melting point lubricant or various fillers as necessary, but is not limited thereto. The form of both layers may be formed by abutting alternately patterned patterns or by partially laminating the pressure-sensitive adhesive layer on the heat-sensitive adhesive layer provided on the entire surface. Is not particularly limited. As a final form, it is sufficient that both the heat-sensitive adhesive layer portion and the pressure-sensitive adhesive layer portion are exposed on the surface of the adhesive layer.

The above description has been given of the simplest configuration of the OVD seal of the present invention, in which the support 1, the OVD layer 2, and the adhesive layer 3 are laminated. This configuration is a basic configuration. It is a known counterfeit that can color each layer, provide a printed layer between layers, improve the design, and verify the ultraviolet / infrared light emitting ink and infrared absorbing ink. It is also possible to appropriately form a printing layer using an anti-ink to enhance the anti-counterfeit effect according to the purpose. Further, a cut may be added to the seal to further prevent peeling.

[0040]

<Example 1> First, an OVD-forming layer was applied to a support made of a transparent polyethylene terephthalate (PET) film having a thickness of 50 µm by about 1 µm by a direct gravure coating method, and then an OVD forming layer was applied by a roll embossing method.
After forming the VD relief pattern, a 0.05 μm-thick Al-deposited thin film layer (OVD effect layer) is formed by vacuum deposition.
Was provided. After that, the heat-sensitive adhesive was provided with a thickness of 10 μm by a gravure reverse kiss coating method, and the pressure-sensitive adhesive was pattern-coated with a thickness of about 1 μm by a direct gravure method,
Release paper was laminated to produce an OVD seal.

Next, a half blanking process and a scrap removing process were performed from the PET film surface side to obtain an OVD seal.

[OVD forming layer paint] Vinyl chloride-vinyl acetate copolymer: 15 parts Urethane resin: 10 parts Methyl ethyl ketone: 50 parts Toluene: 25 parts

[Heat-sensitive adhesive layer coating] Vinyl chloride-vinyl acetate copolymer: 15 parts Acrylic resin: 15 parts Methyl ethyl ketone: 45 parts Toluene: 25 parts

[Pressure-sensitive adhesive layer paint] Acrylic adhesive: 50 parts Ethyl acetate: 50 parts Methyl ethyl ketone: 30 parts Toluene: 50 parts

The OV of Example 1 obtained as described above
After peeling off the release paper, the D-seal was pasted on cardboard paper and tried to be peeled off, but could be easily peeled off. However, they remained so until they were modified.

Next, an iron heated to a surface temperature of 140 ° C. was pressed from the support side for 20 seconds to fuse with the adherend (cardboard paper).

Next, the cardboard paper to which both OVD seals were adhered was immersed in a commercially available seal peeling liquid or alcohol to attempt peeling. The OVD seal prepared in Example 1 was not peelable. Further, the OVD seal prepared in Example 1 was immersed in thinner or toluene in order to peel it off. However, the entire OVD layer was destroyed (dissolved) and could not be reused.

Comparative Example 1 In the same manner as in Example 1, a transparent polyethylene terephthalate (PET) having a thickness of 50 μm was used.
An OVD forming layer is applied to a film support by about 1 μm by direct gravure coating, then an OVD relief pattern is formed by a roll embossing method, and then a 0.05 μm-thick Al film is formed by vacuum evaporation. A thin film layer (OVD effect layer) was provided.

Thereafter, an adhesive was provided in a thickness of about 20 μm by a comma coating method, and release paper was laminated.
A seal was made. Next, a half blanking process and a scrap removing process were performed from the PET film surface side to obtain an OVD seal. The materials used here are the same as in Example 1.

Next, the release paper was similarly peeled off from the conventional OVD seal prepared in Comparative Example 1 and attached to cardboard paper. The OVD seal prepared in Comparative Example 1 was easily peelable because the adhesive was melted.

[0051]

As described above, the OVD seal of the present invention has a strong resistance to a commercially available seal peeling liquid and the like, and prevents re-attachment even in the case of dissolving and peeling the adhesive. Is possible. In addition, since the brittle fracture type seal is broken when it is peeled off once it is applied, it is impossible to re-attach it.
The VD seal also has an advantage that it can be easily re-attached because the initial adhesive strength of the pressure-sensitive adhesive for temporary fixing is weak.

As shown in FIGS. 4 (a) and 4 (b), by providing a release layer on a part or the whole surface, the type can be broken after sticking the seal. The effect can be obtained.

After all, according to the present invention, even if an attempt is made to perform an illegal act by, for example, attacking the adhesive with a commercially available label release agent, an illegal act due to the exchange is not allowed, for example, by preventing the accompanying change. In this way, an effective OVD seal and a method for attaching the same can be provided.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an example of a basic configuration of an OVD seal of the present invention.

FIG. 2A is a cross-sectional view showing one configuration of an OVD seal adhesive layer of the present invention. (B) Sectional drawing which shows one structure of the OVD seal adhesive layer of this invention.

FIG. 3 is a cross-sectional view showing one configuration of an OVD seal OVD layer of the present invention.

FIG. 4A is a cross-sectional view showing an example of the OVD seal configuration of the present invention. (B) Sectional drawing which shows an example of the OVD seal structure of this invention.

[Explanation of symbols]

 1 Support 2 OVD layer 3 Adhesive layer 4 Heat-sensitive adhesive layer 5 Pressure-sensitive adhesive layer 6 OVD forming layer 7 OVD effect layer 8 Release layer (or release layer) )

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference) G02B 5/26 G02B 5/26 5/28 5/28 G03H 1/18 G03H 1/18 G09F 3/02 G09F 3/02 W 3/03 3/03 EF term (reference) 2H048 FA01 FA04 FA05 FA09 FA23 FA24 GA01 GA04 GA05 GA07 GA26 GA61 2H049 AA02 AA06 AA12 AA50 AA55 AA60 AA68 2K008 AA13 AA16 CC03 EE04 FF12 FF17 AK05B15B100B AK22B AK22C AK22J AK25C AK42A AK51B AL01B AL01C AL05B AL05C AR00B AT00A BA03 BA07 BA10A BA10C BA31 CA16C CB03C CB05C EH66B JK06 JN30B YY00

Claims (8)

[Claims] 1. An OVD seal wherein an OVD layer and an adhesive layer are laminated on at least one surface of a support, and wherein the OVD layer is disposed closer to the support than the adhesive layer, wherein the adhesive layer comprises: An OVD seal formed using both a heat-sensitive adhesive part and a pressure-sensitive adhesive part. 2. The heat-sensitive adhesive layer according to claim 2, wherein the adhesive layer is formed so as to cover a continuous heat-sensitive adhesive layer and at least a part of the heat-sensitive adhesive layer with a pressure-sensitive adhesive. Item 2. An OVD seal according to Item 1. 3. The OVD seal according to claim 1, wherein the OVD layer is easily peeled off between the support and the OVD layer. 4. The OVD seal according to claim 3, wherein the peel strength between the support and the OVD layer peels off at a width of 500 mm at a peel strength of 9.8 N or less at 300 mm / min. . 5. The OVD seal according to claim 1, wherein both an easily peelable portion and a hardly peelable portion are provided between the support and the OVD layer. . 6. The OVD seal according to claim 1, wherein both an easily peelable portion and a hardly peelable portion are provided between the OVD layer and the adhesive layer. 7. A support made of a polymer resin material is provided with O
A method for manufacturing an OVD seal in which at least two layers of a VD layer and an adhesive layer are laminated in this order, wherein the adhesive layer is formed using both a heat-sensitive adhesive part and a pressure-sensitive adhesive part. A method for manufacturing an OVD seal, comprising: 8. The OVD according to claim 1, wherein:
OV characterized in that after being temporarily attached to an object using a seal, it is thermally fused by being externally heated.
How to attach D seal.