JP4588554B2 - Tack label and method for manufacturing tack label - Google Patents

Description

  The present invention relates to a tack label attached to an adherend through an adhesive layer and a method for producing the tack label, and particularly suitably used as a tamper-resistant sealing label attached to an opening portion of various packaging bodies. It relates to a tack label that can be made.

Opening parts of packaging materials for various types of packaging such as containers containing foods, pharmaceuticals, cosmetics, etc., packagings in which the containers are packaged with an outer film, and packagings (multipacks) in which a plurality of these packagings are packaged together Sealing labels that are pasted through an adhesive layer so as to straddle and seal this are widely used. Furthermore, sealing labels that can prevent unauthorized opening are also known.
As such a tamper-proof sealing label, for example, when a hidden print is applied to the back side of the film and the label is peeled off, a letter or a symbol (for example, “opened”) or the like indicating the fact that the label is opened is revealed. There is known a label or a sealed label that is provided with a slit in a film and is cut along the slit when the label is peeled off.

However, in such a sealing label, since the adhesive is provided on the entire back surface, for example, if the sealing label is tampered with a cutter or the like along the ridgeline of the corner of the package, the cutting line is conspicuous and thin. Because it is difficult, it may not be possible to determine whether or not tampering has occurred.
In this regard, Japanese Patent Application Laid-Open No. 2002-162909 discloses a sealing label that is folded and pasted across a corner of a container body and a lid, an adhesive layer is formed at both end areas, and an intermediate area Is disclosed as a non-adhesive sealing label.
According to such sealing label, since the intermediate area is non-adhesive, when the sealing label is cut with a cutter or the like along the ridgeline of the corner of the package, the intermediate area is lifted from the container, and whether or not tampering has occurred Can be easily distinguished by appearance.

However, the sealing label described in the above publication has a problem that its production is complicated practically because an adhesive part and a non-adhesive part must be formed on the back surface of the base film.
That is, normally, as a method of providing an adhesive part and a non-adhesive part on the back surface of the base film, an adhesive (or adhesive) is applied to the entire back surface as described in [0007] of the same publication. A non-adhesive portion is formed by laminating a non-adhesive layer on a part of the back surface of the adhesive layer of the base film. When this is manufactured mechanically, the base film coated with the adhesive on the entire back surface is temporarily attached to the release paper surface and supplied. Therefore, when laminating the non-adhesive layer on the pressure-sensitive adhesive layer, the substrate film must be once peeled off from the release paper and then attached to the release paper again. Since the base film is peeled and reattached in this way, the manufacturing process becomes complicated.

JP 2002-162909 A

  Accordingly, the present invention provides a tack label that can be determined that the intermediate region does not adhere to an adherend such as a package, and the intermediate region has been broken after sticking, and can be easily manufactured, and the tack It is an object to provide a method for manufacturing a label.

As means for solving the above-mentioned problems, the present invention provides two pasting portions that can be pasted on a body to be pasted, such as a package, with an interval between them, and the body to be pasted between the two pasting portions. A non-adhesive leaf-like cross-linked portion is bridged, and the cross-linked portion is composed of a coating film obtained by coating and solidifying the resin component, and the cross-linked portion has a length along the inner edge of the pasted portion. A tuck label having a stepped portion is provided.

For example, such a tack label is formed by applying a resin component in a leaf shape so as to straddle the two pasting portions temporarily attached to the surface of the release paper with a space between them, and solidifying it. Can be manufactured by.
Therefore, since it is not necessary to peel off the release paper and reattach it, the tack label can be easily manufactured.

Further, the tack label is such that two sticking portions arranged at intervals can be stuck to the adherend, and the bridging portion provided between the sticking portions cannot be adhered to the adherend. Yes. Therefore, for example, by preventing the unsealed opening by causing the bridging portion to face the corner that is the opening portion of the package, and by sticking the affixing portions to the two surfaces of the package constituting the corner, respectively. Can be used as sealing label.
When the tack label thus attached is cut with a cutter or the like along the edge of the corner of the package, the crosslinked part is divided into two, and the divided crosslinked part is lifted from the package. Accordingly, the divided portion of the tack label is conspicuous in appearance, and the presence or absence of opening can be determined at a glance.
Further, since a long step portion is formed along the inner edge of the pasting portion in the bridging portion, when a force is applied to the bridging portion by hand, the boundary between the pasting portion and the bridging portion (that is, the long step portion). The stress concentrates on the part), and the bridge part can be divided in the lateral direction.

Furthermore, in a preferred aspect of the present invention, there is provided the tack label wherein the cross-linked portion has a tensile strength of 2 to 30 MPa and a tensile elongation of 50% or more. Here, the tensile strength and the tensile elongation are values measured according to JIS K 7127, and the specific measurement procedure is as described in the column of the following examples. Such a label has a moderate strength and flexibility because the cross-linked portion (coating film) has a tensile strength of 2 to 30 MPa and a tensile elongation of 50% or more. However, the cross-linked portion is not easily broken even if it is added. On the other hand, it is possible to easily divide the cross-linked portion with a finger by setting a nail or the like on the cross-linked portion.

  Further, in a preferred aspect of the present invention, the cross-linking portion is a coating film obtained by repeatedly coating two or more resin components, and the tack label has a different shrinkage rate or expansion rate between the upper layer film and the lower layer film. I will provide a. In such a tack label, since the cross-linked portion is composed of a multilayer film of two or more layers having different shrinkage rates or expansion rates of the upper layer film and the lower layer film, the tack label is attached to the corner portion of the package as described above. When cut along a ridge line with a cutter or the like, the divided bridging portion curls outward or inward. Accordingly, it is possible to determine at a glance whether or not the package is opened.

  Further, according to the second means of the present invention, a film piece provided with an adhesive layer on the back surface is temporarily attached to the surface of the release paper with a gap between the two film pieces. A tack label manufacturing method is provided in which a liquid containing a resin component is applied to the surface of a release paper existing between the two, and the resin component is solidified.

  According to this manufacturing method, the above-described tack label can be produced without peeling off the film piece temporarily attached to the release paper via the adhesive layer from the release paper.

According to the tack label and the method for producing the tack label according to the present invention, it is possible to easily produce a tack label in which the intermediate region does not adhere to an adherend such as a package.
In addition, the tack label of the present invention is attached to the corner part that is the opening part of the package with the cross-linked part facing, even if the cross-linked part is cut with a cutter or the like, because that part is conspicuous in appearance, The presence or absence of opening can be discriminated at a glance. Therefore, it can be suitably used as a sealing label for preventing unauthorized opening. Moreover, the tack label of this invention can divide a bridge | crosslinking part to a horizontal direction by applying force with respect to a bridge | crosslinking part.

Hereinafter, the present invention will be specifically described with reference to the drawings.
In FIG. 1, a tack label 1 includes an adhesive layer 3 provided on the back surface of a film piece 2, and two adhesive portions 5 that can be attached to an adherend such as a package, and the two adhesive portions 5. And a cross-linked leaf-like portion 7 sandwiched between them. The cross-linked portion 7 is made of a coating film that is non-adhered to the adherend and is obtained by coating and solidifying a resin component. Has been.
For example, a plurality of tack labels 1 are temporarily attached to the surface of the release paper 8 and supplied.

The affixing part 5 is composed of a film piece 2 having an adhesive layer 3 provided on the back surface.
The film piece 2 is not particularly limited, but is a polyolefin such as polyethylene or polypropylene, a polyester such as polyethylene ethylene terephthalate, a synthetic resin film such as a biaxially stretched film such as polystyrene or vinyl chloride resin, a synthetic paper, a high-quality paper, or a glassine paper. A known film generally used as a base material for a tack label, such as paper such as Japanese paper, a metal vapor-deposited film, or two or more kinds of laminated films, can be used.

The size of the film piece 2 (sticking part 5) is not particularly limited, but if it is too narrow, a sufficient area for bonding to the adherend cannot be secured, and if it is too wide, the size of the bridging part 7 is relatively large. Since it becomes narrow, it is designed in consideration of these. For example, the size of the film piece 2 is about 1/10 to 1/3 of the total area of the tack label 1.
The planar shape of the film piece 2 is formed in a rectangular shape as illustrated, but may be formed in other shapes such as a triangular shape, an elliptical shape, and a semicircular shape in addition to the rectangular shape.

An adhesive layer 3 is provided on the entire back surface of the film piece 2.
The pressure-sensitive adhesive layer 3 is formed, for example, by applying a pressure-sensitive pressure-sensitive adhesive such as an acrylic pressure-sensitive adhesive or a pressure-sensitive adhesive such as a heat-sensitive pressure-sensitive adhesive that develops adhesiveness when heated. However, the pressure-sensitive adhesive referred to in the present invention is one that can be applied to an adherend and is difficult to peel off by hand after application, and includes what is generally referred to as an adhesive.

As described above, the affixing part 5 is composed of the film piece 2 and the adhesive layer 3, but the affixing part 5 in the present embodiment can visually determine the presence or absence of peeling when peeled off. In addition, a peel discriminating means is provided.
As the peeling discriminating means, for example, as the adhesive layer 3, an adhesive that adheres more strongly to the back surface of the film piece 2 than the surface of the adherend is used, and the adhesive layer 3 is not adhered to the back surface of the film piece 2 or It is exemplified that the non-bonding part 4 that is weakly bonded is provided. Note that the non-adhesive portion 4 only needs to be provided in an intervening state at the interface between the film piece 2 and the pressure-sensitive adhesive layer 3. Further, a cut may be formed in the pressure-sensitive adhesive layer 3 along the outer edge of the non-bonding portion 4.
By providing the non-adhesive portion 4 on the back surface of the film piece 2, the adhesive layer 3 facing the non-adhesive portion 4 is peeled off when the film piece 2 attached to the adherend is peeled off via the adhesive layer 3. On the other hand, the pressure-sensitive adhesive layer 3 facing the portion where the non-adhesive portion 4 is not provided is peeled off from the surface of the adherend together with the film piece 2. Thus, since the adhesive layer 3 partially remains on the surface of the adherend, the presence or absence of peeling can be visually determined. In this case, it is preferable to color the adhesive layer 3 in a desired color. Moreover, it is preferable that the non-adhesion part 4 is provided so that the character (for example, "opened" etc.) which tells that it is already opened may be represented.
In addition, formation of the non-adhesion part 4 can be performed by a well-known method, such as applying a silicone resin or ultraviolet curable ink.

At least two sticking portions 5 are set at a predetermined interval, and a tuck label 1 is configured by providing a leaf-shaped bridging portion 7 between the two sticking portions 5.
This bridge | crosslinking part 7 is comprised from the flexible coating film obtained by apply | coating the resin component between the sticking parts 5, and solidifying this.
Specifically, the bridging part 7 is provided in a solid shape from the entire surface of the two sticking parts 5 to between the sticking parts 5, and both sides of the bridging part 7 are bonded to the surface of the sticking part 5. The intermediate region of the bridging portion 7 is temporarily attached to the surface of the release paper 8. Accordingly, the back surface in the intermediate region of the bridging portion 7 (the back surface between the two pasting portions 5) does not have the predetermined width W (for example, about 5 mm to 30 mm) and the adhesive layer 3 in the lateral direction X. It cannot be adhered to the adherend. Therefore, the tack label 1 cannot be bonded to the adherend in the intermediate region. Moreover, the adhesive force with respect to the surface of the sticking part 5 of the bridge | crosslinking part 7 may be equivalent to or weaker than the adhesive force with respect to the to-be-adhered body of the adhesion layer 3. FIG. However, from the viewpoint of preventing the bridging portion 7 from being peeled off from the pasting portion 5 without being broken when the label 1 is to be peeled off after the tack label 1 is pasted, the bridging portion 7 is covered with the adhesive layer 3. What adheres to the surface of the film piece 2 sufficiently strongly rather than the adhesive force with respect to a sticking body is preferable.
The thickness of the bridging portion 7 is not particularly limited, but if it is too thin, sufficient mechanical strength cannot be obtained, and if it is too thick, there is a possibility that the bridging portion 7 will not break. Therefore, the bridging portion 7 is formed to a thickness of about 30 to 300 μm. It is more preferable, and it is more preferable to form the film in a thickness of about 40 to 150 μm.
The bridging portion 7 is formed in a flat leaf shape as a whole, but the bridging portion 7 is formed with a long step portion 71 along the inner edge at the inner edge of the sticking portion 5. .

The resin component constituting the cross-linked portion 7 is not particularly limited as long as it can be applied and becomes a leaf-like form upon solidification, for example, those used as a resin component of a printing ink vehicle, such as polyurethane, Examples thereof include polyurethane acrylate, polyester, polyester acrylate, synthetic rubber, vinyl acetate copolymers such as vinyl chloride-vinyl acetate copolymer, acrylic resins, and rosin esters. Among these, polyurethane acrylate is preferably used because it can be cured with ultraviolet rays and the resulting coating film becomes relatively flexible.
The resin component is prepared by applying a colorant such as a pigment and other additives as necessary, and dissolving and dissolving in an appropriate solvent.
The coating method of the resin component is not particularly limited, but it is preferably performed by various printing methods because it can be easily applied within a predetermined range, and among them, the resin component can be coated relatively thickly, and therefore by silk screen printing. Is preferred.
The method of solidifying the resin is not particularly limited, and can be performed by a method such as solidification by drying such as solvent volatilization, solidification by photopolymerization (for example, ultraviolet curing type), solidification by electron beam polymerization, solidification by thermal polymerization, or the like. .
In addition, the bridge | crosslinking part 7 may be comprised by two or more layers by recoating a resin component, and also prints predetermined design display layers, such as a brand name, on the surface or intermediate | middle of the bridge | crosslinking part 7. May be.
Moreover, when the coloring agent is mixed with the resin component, the colored crosslinked portion 7 is formed. In this case, a predetermined design display layer may be printed on the crosslinked portion 7.

The strength of the cross-linked part 7 (coating film) can be appropriately adjusted by selecting the resin component and designing the thickness of the coating film.
Since the bridging part 7 is a part that connects the two sticking parts 5 and constitutes one tack label 1, it needs mechanical strength so as not to be inadvertently broken by an impact or the like, but is too strong. If it is too high, it will be difficult to cut the bridging part 7 with a finger.
From such a viewpoint, the strength of the bridging portion 7 is preferably formed to a tensile strength of about 2 to 30 MPa, and more preferably a tensile strength of about 5 to 12 MPa.
Further, the crosslinked portion 7 preferably has a tensile elongation of 50% or more, and more preferably 100% or more. Bridge portion 7 having such tensile elongation, because it has a proper flexibility, the bridge portion also impact Kuwawa such as by contacting the drop or foreign matter is less likely to break, while following along the corner of the package It can be deformed, and can be easily divided with a finger by raising a nail or the like.
However, the said tensile strength and tensile elongation say the measured value according to JISK7127, and a specific measurement procedure is as having demonstrated in the column of the following Example.

In addition, depending on the material (for example, polypropylene etc.) of the film piece 2 of the sticking part 5, since a resin component may not fully adhere | attach, in such a case, it is well-known on the surface of the film piece 2 as needed. Surface treatment (for example, corona discharge treatment, chromic acid treatment, application of a coupling agent, formation of irregularities by sandblasting, etc.) is preferably performed.
Further, an overcoat varnish or the like may be appropriately provided on the surface of the bridging portion 7 (in the case where a design print layer is provided on the surface, the surface of the layer).

The tack label having the above configuration can be manufactured, for example, by the following method.
First, a plurality of non-adhesive portions 4 are formed by applying a silicone resin or the like on the back surface of the original film constituting the film piece 2 so as to represent opened characters at a predetermined interval.
The back side of the original film is pasted onto the adhesive layer 3 of the release paper 8 on which the adhesive layer 3 is applied in a solid shape, and the adhesive layer 3 is transferred to the original film.
Next, the original film and the pressure-sensitive adhesive layer 3 are punched out into a predetermined plane shape including the individual non-adhesive portions 4 from above the three-layer structure sheet raw material, and portions other than the portion to become the sticking portions 5 are removed. . Thereby, as shown to Fig.2 (a), the tack label original fabric 10 temporarily attached with the some sticking part 5 along with the release paper 8 can be obtained.
Next, as shown in FIG. 2 (b), the release paper 8 between the surface of the adjacent pair of sticking portions 5, 5 and the sticking portions 5, 5 from above the tack label original fabric 10. The coating liquid 11 containing the resin component is applied using a silk screen plate or the like (the coating range is indicated by thin ink coating). Next, a coating film (crosslinked portion 7) is formed between the pair of pasting portions by solidifying the resin component by ultraviolet irradiation / drying or the like. In addition, when the bridge | crosslinking part 7 is comprised with a multilayer coating film, what is necessary is just to repeat the said coating solidification process.
In this way, a sheet temporarily attached with a plurality of tack labels 1 arranged on the release paper 8 as shown in FIG. 1 can be obtained.

According to the above manufacturing method, the resin component is applied so as to straddle the two pasting portions 5 from the top of the two pasting portions 5 temporarily attached to the surface of the release paper 8 with a space therebetween, and this is solidified. Thus, the tack label 1 can be manufactured.
Therefore, it is not necessary to peel off the release paper 8 and reattach it, and the tack label 1 can be manufactured continuously and easily.

The tack label 1 having the above-described structure is formed by allowing the bridging portion 7 to face the ridgeline of the opening portion of the package, for example, the corner 14 (opening / closing portion) of the container body 12 and the lid 13 as shown in FIG. By affixing the affixing part 5 to one surface of the main body 12 and the surface of the lid body 13, the opened portion of the package can be sealed.
Even if the cheating person cuts the bridging portion 7 with a cutter or the like along the ridgeline of the corner portion 14 of the package, the divided bridging portion 7 is not attached to the packaging body. Since it does not adhere, it floats up from the package as shown in FIG. Accordingly, the divided portion of the tack label 1 is conspicuous in appearance, and it can be determined at a glance whether there is an unauthorized opening.
In particular, when the entire bridging portion 7 is colored or when a design display layer is provided on the bridging portion 7, colors and design indications are separated at the divided portion, so the presence or absence of opening is more visually confirmed. There is an advantage that it is easy to distinguish.

On the other hand, when the sticking part 5 is peeled off in an attempt to peel off the tack label 1, a part of the adhesive layer 3 remains on the surface of the package, so that the presence or absence of opening can be similarly determined from the appearance. Further, even if the tack label 1 is to be pasted again, it cannot be pasted.
Therefore, the tack label 1 of the present invention can be suitably used as a sealing label for preventing unauthorized opening.

Next, when a legitimate user tries to open the packaging body sealed with the tack label 1, the packaging part 5 can be peeled off to open the packaging body, but the bridging part 7 is divided with a finger. It is easier to open it. In this respect, when the bridging portion 7 is formed with a tensile elongation of 50% or more (in particular, when it is formed with a tensile strength of about 2 to 30 MPa), for example, By pulling the side edge of the bridging part 7, the bridging part 7 can be easily divided by a finger.
In particular, since a long step portion 71 is formed along the inner edge of the pasting portion 5 in the bridging portion 7, when force is applied to the bridging portion 7 by hand, as shown in FIG. Further, stress concentrates on the boundary between the pasting part 5 and the bridging part 7 (that is, the long stepped part 71), and the bridging part 7 is reliably divided in the lateral direction.

Next, the modification of the said embodiment is shown. Hereinafter, a configuration different from each of the embodiments described above will be mainly described, and the description of the same configuration or the like may be omitted, and a drawing number may be used.
In the said embodiment, although the bridge | crosslinking part 7 is provided in the whole surface of the sticking part 5, as shown to Fig.5 (a), you may be provided in a part of surface of the sticking part 5, for example. The bridging portion 7 only needs to be provided at least between the pasting portions 5 so as to connect the two pasting portions 5.
Moreover, as shown in FIG.5 (b), the edge part 72 of the bridge | crosslinking part 7 may be provided so that it may extend outside from the outer side edge of the sticking part 5. FIG. In this manner, the tack label 1 in which the edge portion 72 of the bridging portion 7 is extended is attached to the adherend and then peeled off to pick up the edge portion 72 of the bridging portion 7. Can be peeled off.

Furthermore, the tack label 1 is not limited to the one composed of the two pasting portions 5 and the bridging portion 7, and for example, as shown in FIG. 6A, the bridging portion 7 straddles the four pasting portions 5. The tack label 1 in which is provided may be used. The tack label 1 of the present invention has at least two sticking parts 5 and connects the sticking parts 5, and it is sufficient that a bridging part 7 made of a coating film is provided therebetween.
Moreover, the planar shape of the sticking part 5 is not restricted to a rectangular shape, For example, as shown in FIG.6 (b), it may be formed in the semicircle shape.

Further, the bridging portion 7 may be composed of a multilayer coating film obtained by repeatedly coating two or more resin components. In this case, for example, as shown in FIG. 73 and the lower layer film 74 are preferably formed of a coating film mainly composed of resins having different shrinkage rates or expansion rates. Examples of the resin having a different shrinkage rate or expansion rate include those in which the shrinkage rate or the expansion rate varies with the temperature, humidity, passage of time, or a combination thereof after forming a coating film. Specifically, the upper layer film 73 (or the lower layer film 74) is formed with a coating liquid containing a highly hygroscopic resin (for example, ethylene-vinyl alcohol copolymer (EVOH) or polyamide), and the hygroscopic property is Examples thereof include means for forming the lower layer film 74 (or the upper layer film 73) with a coating liquid containing a low and flexible resin (for example, polyethylene, polypropylene, acrylic resin, etc.).
In this way, if the upper layer film 73 and the lower layer film 74 are configured to have different contraction rates or expansion rates, the fraudulent person can cut the bridging portion 7 with a cutter or the like along the ridgeline of the corner portion 14 of the package. When cut, the divided bridging portion 7 curls outward or inward due to the shrinkage difference between the upper and lower layers 73 and 74, as shown in FIG. Therefore, the presence / absence of unauthorized opening can be more reliably determined by appearance.
In addition, when the bridge | crosslinking part 7 is comprised with a multilayer coating film of three or more layers, what is necessary is just to form a shrinkage | contraction rate or an expansion coefficient so that it may become small or large sequentially from an upper layer.

Furthermore, in the said embodiment, although the non-adhesion part 4 is interposed in the interface of the film piece 2 and the adhesion layer 3 as a peeling discrimination | determination means provided in the sticking part 5, as the film piece 2, for example, it is comparatively weak. By using a film (a film that breaks when a little force is applied), in combination with the adhesive layer 3, the film piece 2 itself made of the fragile film can be used as an opening discrimination means.
That is, when the sticking part 5 is constituted by the adhesive layer 3 and the film piece 2 made of the fragile film, the film piece 2 made of the fragile film which is easily broken when the tack label 1 is peeled off is randomly divided. A part of the adhesive layer 3 remains on the surface of the adherend together with the adhesive layer 3 and a part of the adherend is peeled off from the adherend, so that the presence or absence of opening can be discriminated by appearance. Moreover, even if affixed again, the fragile film that was randomly divided cannot be restored.

As such a fragile film, for example, a film having a tensile strength at break of 3 to 50 MPa, preferably 5 to 30 MPa, and an elongation at break of 50% or less, preferably 40% or less can be used. Further, the thickness of the fragile film is not particularly limited, but if it is too thin, the handleability is poor, and if it is too thick, it is disadvantageous in terms of cost, and a film having a thickness of about 15 to 200 μm is used.
The tensile strength at break and elongation at break were as follows: JIS K 7127: a test piece formed at 15 × 200 mm at 23 ° C., tensile speed 200 mm / min, chart speed 200 mm / min, chuck distance 10 mm It is the value measured and calculated under the conditions.

Moreover, you may form the weak film which comprises the film piece 2 in the shape of a hole as shown, for example in FIG.
Specifically, the film piece 2 is a hole including a narrow thin line portion 2a (for example, a width of 0.1 mm to 2 mm) by cutting a sheet-like fragile film so as to represent a predetermined pattern by a line drawing. It consists of an open fragile film 21. Examples of such a perforated fragile film include Clear Cut (trade name) manufactured by Miracle Industry.
In the tack label 1 according to this modification, an adhesive layer 3 is provided on the back surface of the film piece 2 made of the perforated fragile film 21 so that an adhesive portion 5 is formed, and the adhesive portion 3 is interposed between the adhesive portions 5. A bridging portion 7 is provided.

When the tack label 1 is applied to an adherend and then peeled off, the film piece 2 made of a perforated brittle film is randomly divided. In particular, as shown in FIG. 8, by forming the bridging portion 7 across a part of the surface of the pasting portion 5 without providing the bridging portion 7 on the entire surface of the pasting portion 5, the pasting portion 5 is more It will be surely divided.
In addition, if such a perforated brittle film is used, it is easily divided at the time of peeling. Therefore, it is possible to use a brittle film having a tensile strength at break of 50 MPa or more and / or an elongation at break of 50% or more. It is.

The perforated brittle film can be produced, for example, by the manufacturing method disclosed in Japanese Patent Publication No. 6-35237.
The details are as described in the official gazette, but if this is briefly explained according to the configuration of the present application, the surface of the release paper (corresponding to the “release sheet” of the official gazette; hereinafter simply written in brackets) In addition, a metal vapor-deposited film or a synthetic resin film is stuck through an adhesive layer (“adhesive”). The adhesive layer or film is made of a material that can be dissolved in a chemical such as ethyl acetate. On the surface of this film, image lines such as desired characters, figures, symbols and patterns are printed by a printing plate. As this printing ink, those which are not dissolved by the above chemicals are used. After the image line is formed in this manner, a chemical that dissolves the adhesive layer and the film and does not dissolve the printing ink is applied to the entire surface. As a result, the adhesive layer and the film in the portion where the image line is not formed dissolves / disappears. Thus, a perforated brittle film can be obtained on the release paper through the adhesive layer.
According to such a manufacturing method, since the brittle film 21 having a design including a very narrow thin line portion can be produced, a fraudulent person cannot easily produce the same one as the brittle film 21 to prevent forgery. Excellent effect.
In addition, as a peel discriminating means provided in the pasting unit 5, hidden printing may be performed.

  Moreover, the use of the tack label 1 of the present invention can be used for purposes other than sealing for sealing an opening portion of a package. Moreover, the tack label 1 of this invention is not restricted to the case where it affixes on a package body, It can affix and use it on various to-be-adhered bodies.

EXAMPLES Hereinafter, an Example is shown and this invention is explained in full detail. However, the present invention is not limited to the following examples.
(Example)
Prepared a three-layer raw material in which an acrylic pressure-sensitive adhesive is applied in a solid shape on release paper, and a 50μm thick biaxially stretched polyethylene terephthalate film (biaxially stretched PET) is laminated on the adhesive layer Then, the film and the adhesive layer were punched out, and a plurality of pasting portions having dimensions as shown in FIG. 9A were formed on the release paper. Next, UV screen printing ink (made by Teikoku Ink Co., Ltd.) containing polyurethane acrylate as a resin component between the entire surface of two adjacent adhering portions 5 ′, 5 ″ and both adhering portions 5 ′, 5 ″. , Trade name: UV SPA-314 thick clear) was applied by a screen printing method so that the dry thickness was 70 μm.
In this way, as shown in FIG. 9B, the label 1 in which the bridging portion 7 was formed between the pasting portions 5 ′ and 5 ″ was produced.
With respect to the tensile strength and tensile elongation of the bridging portion 7 of this label, both ends 1a and 1a of the label formed in a length × width of 15 mm × 20 mm as shown in FIG. 9B are held by a chuck according to JIS K7127. Then, the tensile strength and the elongation of the crosslinked part were measured and calculated under the conditions of a chucking speed of 200 mm / min and a chart speed of 200 mm / min at 23 ° C. (distance between chucks: 10 mm). As a measuring instrument, a product name: Autograph AG-500N manufactured by Shimadzu Corporation was used.
The tensile strength was determined by the maximum value during the measurement, and the tensile elongation was determined by (elongation until the cross-linked portion broke) / (initial width of the cross-linked portion) × 100.

As a result of the above measurement, the tensile strength at the crosslinked part was 9 MPa, and the tensile elongation at the crosslinked part was 125%. In the above-prepared label, the width of only the bridging portion is 4 mm, and the distance between chucks is 10 mm, so that biaxially stretched PET (sticking portion) is interposed between the chucks. Since PET is not continuous between chucks, the tensile strength of biaxially stretched PET is sufficiently large compared to the crosslinked part and the tensile elongation is negligibly small compared to the crosslinked part. Can be evaluated as the tensile strength and tensile elongation of the bridging portion located in the central portion of the chuck.
Next, when the cross-linked portion of the label was pasted so as to straddle the corner of the package and allowed to fall naturally onto the concrete surface from a point of 1 m in height, the label did not break.
And when the crosslinked part of this label was pulled by hand, the crosslinked part could be divided into two.

(A) is a partially omitted plan view showing an embodiment of a tack label temporarily attached to a release paper, and (b) is a longitudinal sectional view cut in the longitudinal direction along line AA. (A) and (b) both show the manufacturing process of a tack label, (a) is a partially omitted plan view showing a tack label original fabric from which the affixed part is punched, and (b) further shows a coating liquid. The partially abbreviated top view which shows the applied tack label original fabric. (A) is a perspective view which shows the state which stuck the tack label to the opening part of the package, (b) is the longitudinal cross-sectional view. (A), (b) is a longitudinal cross-sectional view which shows the state which cut | disconnected the bridge | crosslinking part of the tack label stuck on the package of FIG. (A), (b) is a longitudinal cross-sectional view which shows other embodiment of a tack label. (A) is a longitudinal cross-sectional view which shows other embodiment of a tack label, (b) is a partially abbreviated plan view which shows other embodiment of a tack label. (A) is a longitudinal cross-sectional view which shows other embodiment of a tack label, (b) is a longitudinal cross-sectional view which shows the state which affixed the tack label of the same (a) to a package body, and cut | disconnected the bridge | crosslinking part. (A) is a top view which shows other embodiment of a tack label. However, a crosslinked part is shown with a dashed-two dotted line. (B) is a partially omitted perspective view including a longitudinal section showing only the pasting part temporarily attached to the release paper among the tack labels cut along the line BB of (a). (C) is the CC sectional view taken on the line in (a). (A) is a partially omitted plan view showing the production of the label of the example, and (b) is a plan view showing the label of the example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Tack label, 2 ... Film piece, 21 ... Brittle film, 2a ... Fine wire part, 3 ... Adhesion layer, 5 ... Adhesion part, 7 ... Bridging part, 71 ... Long step part, 72 ... Edge part, 8 ... Separation Paper pattern

Claims (4)

Two pasting parts that can be pasted on a body to be pasted, such as a package, are arranged at an interval, and a leaf-like bridging part that cannot be bonded to the body to be pasted is bridged between the two pasting parts. ,
The cross-linked part is composed of a coating film obtained by coating and solidifying a resin component ,
The cross-linking portion is formed with a long step portion along the inner edge of the sticking portion . The tack label according to claim 1, wherein the crosslinked portion has a tensile strength of 2 to 30 MPa and a tensile elongation of 50% or more.   The tack label according to claim 1 or 2, wherein the cross-linked portion is formed of a coating film obtained by repeatedly coating two or more resin components, and the shrinkage rate or the expansion rate of the upper layer film and the lower layer film are different.   A film piece provided with an adhesive layer on the back side is temporarily attached to the surface of the release paper with a gap between the two adjacent film pieces and the surface of the release paper between the two film pieces. A method for producing a tack label, wherein a liquid containing a component is applied to solidify the resin component.

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