JPH08234665A - Transparent adhesive label and thermal-transfer ribbon-integrated transparent adhesive label - Google Patents

Abstract

PURPOSE: To provide a transparent adhesive label excellent in transparency, adhesion (between an adhesive releasable paper and a adhesive layer, and between the adhesive layer and an adherend) and cost effectivenss and to provide a thermal-transfer sheet-integrated transparent adhesive label easy to print. CONSTITUTION: An adhesive layer 3 and releasable paper 4 are laminated on one side of a transparent substrate 2 to consitute an adhesive label 1, and the Bekk smoothness of the releasing face of the adhesive paper is controlled to >=10,000sec and the thickness of the adhesive layer to 5-20μm. Meanwhile, a thermal-transfer sheet-integrated transparent adhesive label is formed by temporarily adhering a thermal-transfer ribbon 6 on the surface side of the transparent adhesive label through a temporary adhesive layer 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure-sensitive adhesive label having excellent transparency, and in particular, for sticking to an adherend after printing and recording on the pressure-sensitive adhesive label by a thermal transfer system by a thermal printer, a word processor, a thermal plotter or the like. The present invention relates to a suitable integrated pressure-sensitive adhesive label integrated with a thermal transfer sheet, and a transparent pressure-sensitive adhesive label that can be used as an intermediate product thereof or as a support for an overcoat to be stuck. Specific uses of the printed and recorded label include an indicator attached to a window glass, a sticker attached to an automobile, and a label additionally displayed on a banner.

[0002]

2. Description of the Related Art Generally, in a general transparent adhesive label, the thickness of the adhesive layer is often 20 to 40 μm from the viewpoint of the adhesive force when it is attached to an adherend. Further, in recent years, it has become possible to print character information, names, patterns, etc. on an adhesive label and attach it to various adherends by using a small printer of a thermal transfer system. These are office equipment,
Various types of label printers are commercially available.

[0003]

However, it is natural that the thickness of the pressure-sensitive adhesive layer should be thin in consideration of economical efficiency. However, when the thickness of the pressure-sensitive adhesive layer is 20 μm or less, the smoothness of the release paper is low. If it is high, there is no particular problem, but if it is low, the pressure-sensitive adhesive layer is fixed according to the unevenness, so that the surface of the pressure-sensitive adhesive layer becomes matte when peeled off. As a result, when the transparent adhesive label is peeled off from the release paper and attached to the next various adherends, the usage method that attaches importance to transparency, for example, sticking on window glass, displaying different information on a poster etc. In some cases, the adhesive layer surface of the transparent adhesive label is matted to cause fogging (the haze value increases), and as a result,
The visibility is reduced. When the thickness of the adhesive layer is thin as described above, in addition to the deterioration of the optical performance, the adhesive strength to the release paper becomes too weak, and the release paper peels off or floats during storage, which causes stability problems over time. Also, when handling labels with a machine such as a labeler, a problem of machine suitability that the release paper floats occurs. Further, various types of thermal transfer recording printers currently on the market include not only printers having a thermal transfer ribbon transport system but also printers dedicated to thermal color paper that do not have a ribbon transport system. Since the latter printer is a thermosensitive coloring paper, it is inferior in long-term storability and weather resistance of a printed matter, and cannot be used in applications where these are required.

Therefore, an object of the present invention is to solve the above-mentioned drawbacks, to provide a transparent adhesive label which is excellent in transparency, economical efficiency, stability over time, and the like, and which uses the transparent adhesive label. It is an object of the present invention to provide a transparent adhesive label integrated with a thermal transfer ribbon, which can easily perform printing with excellent weather resistance by a dedicated printer for thermosensitive coloring paper.

[0005]

According to the invention of claim 1 of the transparent adhesive label of the present invention, in order to solve the above-mentioned problems and to achieve the object, an adhesive layer and a release paper are sequentially laminated on one surface of a transparent substrate. In the transparent adhesive label described above, the Bekk smoothness of the release surface of the release paper is 10,000 seconds or more, and the thickness of the adhesive layer is 5 to 5.
The configuration is 20 μm. The invention of claim 2 is
For the transparent adhesive label of claim 1,

Ha = Ht-Hb = ≦ 10 where Ha = [Haze value of adhesive layer] Ht = [Haze value of transparent substrate and adhesive layer] Hb = [Haze value of transparent substrate]

A configuration that satisfies the above is adopted. Further, the invention of claim 3 has a constitution in which the haze value of the transparent substrate is 5 or less with respect to the transparent adhesive label of claim 1 or 2.

Further, the heat-sensitive transfer ribbon integrated transparent adhesive label according to claim 4 is different from the transparent adhesive label according to any one of claims 1 to 3 in the adhesive layer forming surface of the transparent substrate of the transparent adhesive label. The thermal transfer ribbon is temporarily bonded on the ink layer surface via the temporary adhesive layer on the opposite surface. According to the invention of claim 5, the temporary adhesive layer, the ink layer, or the temporary adhesive layer and the ink layer of the non-printed portion are transparent adhesive when the thermal transfer ribbon is peeled off from the transparent adhesive label integrated with the thermal transfer ribbon of claim 4. A background stain prevention layer that prevents the transfer to the label side is interposed between the temporary adhesive layer and the transparent base material of the transparent adhesive label. According to a sixth aspect of the present invention, in addition to the thermal transfer ribbon-integrated transparent adhesive label according to the fifth aspect, the background stain-preventing layer contains a silicone-modified acrylic resin as a main component. According to the invention of claim 7, the glass transition temperature of the resin which is the main component of the background stain prevention layer is set to 50 to 100 ° C. with respect to the transparent adhesive label with integrated thermal transfer ribbon of claim 5 or 6.

The present invention will be described in detail below with reference to the drawings. FIG. 1 is a vertical sectional view showing an embodiment of the transparent adhesive label of the present invention. As shown in FIG. 1, the transparent adhesive label 1 of the present invention
Is composed of at least a transparent substrate 2, an adhesive layer 3 and a release paper 4. FIG. 2 is a longitudinal sectional view showing an embodiment of the thermal transfer ribbon-integrated transparent adhesive label of the present invention. Figure 2
As described above, the thermal transfer ribbon integrated transparent adhesive label 5 of the present invention
Is at least a ribbon base material 7 and an ink layer 8 via a temporary adhesive layer 9 on the surface side (non-adhesive layer surface) of the transparent base material 2 of the transparent adhesive label 1 having the structure as shown in FIG. The thermal transfer ribbon 6 composed of the above is laminated so as to be (temporarily) adhered on the ink layer side, and after printing, the ink layer 8 is transferred to the transparent adhesive label 1 side together with the temporary adhesive layer 9 in the printed part, and the non-printed part Then, the temporary adhesion layer 9 and the transparent adhesive label 1 are temporarily bonded so as to be peeled off at the interface. Further, FIG. 3 is an example of another configuration in which a background stain prevention layer 10 is provided between the transparent base material 2 and the temporary adhesive layer 9 in the configuration of FIG. 2. In the configuration of the figure, the background stain prevention layer is provided on the transparent base material side in the non-printed portion,
The temporary adhesive layer is formed by applying it to the thermal transfer ribbon side and then laminating it. When the thermal transfer ribbon is peeled off, it is peeled off at the interface between the temporary adhesive layer 9 and the background stain prevention layer 10 in the non-printed portion.

First, the constituent materials of the transparent adhesive label will be described.

Examples of the transparent substrate 2 include a film or sheet made of a transparent resin, for example, a polyester resin such as polyethylene terephthalate, polypropylene, polyethylene or the like. Among them, polyethylene terephthalate is preferable in terms of strength, haze and the like. The thickness of the transparent substrate is appropriately selected depending on the application, but is usually about 25 to 150 μm. If it is transparent and has a small haze, it may be colored and transparent depending on its use. The surface of the adhesive layer or the surface of the transparent substrate for preventing the stain may be subjected to a known easy-adhesion treatment such as flame treatment, corona discharge treatment, ultraviolet treatment, primer treatment, or anchor layer.

In the present invention, it is particularly preferable to set the haze of the transparent substrate to 5 or less in order to obtain good transparency.
When the haze exceeds 5, since the transparent substrate itself is cloudy, the present invention cannot be utilized, and the base is difficult to see even when it is attached to a wide variety of adherends.

As the adhesive layer 3, a conventionally known transparent adhesive can be used. Examples of these adhesives include acrylic adhesives, rubber adhesives, silicone adhesives, and the like. Further, in order to increase the film strength, a curable pressure sensitive adhesive using isocyanate or the like may be used. Also,
The adhesive layer is formed by a conventionally known coating means such as gravure coating, gravure reverse coating and roll coating. In particular, the lower the haze value of the pressure-sensitive adhesive layer, the better in order to obtain good transparency when sticking the transparent pressure-sensitive adhesive label. Therefore, if the haze value of the adhesive layer is defined as a value obtained by subtracting the haze value of the transparent base material from the haze value in the laminated state of the transparent base material and the adhesive layer, the haze value of the adhesive layer should be 10 or less. Is preferred. Incidentally, the laminated state of the transparent substrate and the adhesive layer is a state after the release paper is peeled off, and as described below, if the release paper has a large unevenness on the release surface, the unevenness on the adhesive layer surface also becomes large and haze. The value also increases.

As the release paper 4, any material such as a resin film, paper, a composite of impregnated paper, or the like, and the material of the substrate may be used as long as the release surface has a Bekk smoothness of 10,000 seconds or more. However, the resin film is preferable in that smoothness can be easily obtained. By setting the Beck's smoothness to 10,000 seconds or more, even if the pressure-sensitive adhesive layer is thinned from the viewpoint of transparency, it maintains a proper adhesive force between the release paper and the pressure-sensitive adhesive layer, and the surface of the pressure-sensitive adhesive layer after the release paper is peeled off. Since it can be made smooth, a practical adhesive force when the label is attached to an adherend can be realized. Also, the release surface of the release paper is
A well-known mold release treatment that forms polyethylene or silicone resin may be used. Polyethylene can cover the surface by extrusion lamination method. In the silicone treatment, a silicone resin dissolved or dispersed in a solution is generally applied by a coating method together with a binder, if necessary. Examples of the base material of the release paper include a film made of a resin such as polyethylene terephthalate, polypropylene and polyethylene. The thickness is usually about 25 to 250 μm. In addition to the resin film, for example, a paper such as a high-quality paper coated with a resin such as polyethylene, polypropylene, or polyethylene terephthalate by a melt extrusion coating method or the like, which is further release-treated with a silicone resin or the like, may be used. The smoothness of can be obtained. The release paper may be transparent, but if a white or colored release paper is used, it is easy to check the print quality after printing and distinguish the release paper when using a thermal transfer ribbon integrated transparent adhesive label. Therefore, it is also suitable in terms of ease of peeling. The method of laminating the release paper is not limited to the method of coating and forming the adhesive layer on the transparent base material or the transparent base material which has been subjected to the background stain prevention treatment, and then laminating the release paper. After that, a method of laminating a transparent substrate may be used. In the latter case, since the release paper is subjected to a release treatment, peeling the release paper causes the adhesive layer to move to the transparent substrate side.

When the thermal transfer ribbon 6 is laminated on the transparent adhesive label of the present invention via a temporary adhesive layer and temporarily adhered, a thermal transfer integrated transparent adhesive label 5 as illustrated in FIG. 2 is obtained.

In the temporary adhesive layer 9, it is preferable that when the thermal transfer ribbon is peeled off after thermal transfer recording, the temporary adhesive layer in the non-printed portion is moved to the thermal transfer ribbon side. Therefore, the temporary adhesive layer must exhibit an appropriate temporary adhesiveness such that the temporary adhesive layer adheres to the ink layer of the thermal transfer ribbon but is easily peeled off from the transparent label side. When such a temporary adhesive layer is composed of a resin layer, for example, a thermoplastic resin such as an acrylic resin can be used. In addition, waxes such as carnauba wax, paraffin wax, polyethylene wax, and microcrystalline wax, polyester resin, acrylic resin, and rubber are used in order to appropriately balance the temporary adhesion with the ink layer and the adhesion with the transparent substrate. Additives such as resins may be appropriately mixed. The temporary adhesive layer may be formed on the ink layer of the thermal transfer ribbon, but when it is applied on the transparent label side, a coating solution made of the above resin or the like is added to the conventionally known gravure coat, gravure reverse coat, roll. It is formed on the transparent substrate (the surface opposite to the adhesive layer surface = front surface) by a coating means such as a coat, an air coat and a knife coat. A thickness of about 0.001 to 10 μm is sufficient.

As in the other embodiment shown in FIG. 3, in the heat-transfer ribbon-integrated transparent adhesive label 5, the surface opposite the adhesive layer 3 of the transparent adhesive label 1 (that is, the temporary adhesive layer 9 of the transparent substrate is formed). Side surface) to prevent the non-printed part of the temporary adhesive layer 9 (and the ink layer 8 associated with the layer) from moving to the transparent adhesive label 1 side, and at the same time, to the transparent adhesive label 1 side of the ink part 8 of the printed part. A background stain prevention layer 10 having improved transferability to the transparent substrate 2 may be provided between the transparent substrate 2 and the temporary adhesive layer 9. As a result, it is possible to prevent the unnecessary ink layer 8 from being transferred to the transparent pressure-sensitive adhesive label side in the non-printed portion to cause background stain.

As the scumming preventive layer 10, a silicone-modified acrylic resin, polymethyl methacrylate, ethyl methacrylate-methyl methacrylate copolymer (EMMA) is used.
Acrylic resin such as vinyl chloride-vinyl acetate copolymer,
It is preferable to use resins such as ethylene-vinyl acetate copolymer and polyester resin as a main component. In particular,
Since the silicone-modified acrylic resin is hard to be compatible with the temporary adhesive layer, it is excellent in preventing migration of the ink layer. Further, when the glass transition temperature of the resin as the main component is in the range of 50 to 100 ° C, the transferability of the ink layer is improved. That is, when the glass transition temperature is less than 50 ° C., scumming is likely to occur during storage of the product. However, the glass transition temperature is 100
If the temperature exceeds ℃, the thermal energy of the thermal head of the printer is less likely to soften the ink, which hinders transferability of the ink layer.

The formation of the background stain prevention layer may be carried out prior to the formation of the temporary adhesive layer by the various coating means described in the formation of the temporary adhesive layer on the transparent substrate. It is sufficient that the background stain prevention layer has a thickness of about 0.1 to 5 μm.

As the heat transfer ribbon 6, a conventionally known heat melting type ribbon can be used. Such a thermal transfer ribbon 6 is shown in FIG.
As described above, at least the ribbon base material 7 and the heat-meltable ink layer 8 are configured.

Polyester such as polyethylene terephthalate is preferably used as the ribbon base material 5, but other than this, cellulose acetate, polycarbonate, polyamide, polyethylene, polypropylene, polystyrene, polyvinyl chloride, polyvinylidene chloride, etc. It is a film having a thickness of about 2 to 25 μm, a paper such as glassine paper, or a composite thereof. The transparency of the ribbon base material does not matter.

The ink layer 8 is composed of a binder composed of a wax component, a pigment such as carbon black, a coloring agent of various colors such as a dye, and various additives if necessary. As the wax component, for example, known waxes such as microcrystalline wax, ester wax, carnauba wax, paraffin wax, polyethylene wax, and the like, ethylene-vinyl acetate copolymer, vinyl acetate-vinyl chloride copolymer are used as appropriate. Thermoplastic resins such as coalesce, petroleum resin and rosin resin are also used together. The ink layer is formed by a solution, dispersion or melt of a composition comprising a binder forming the ink layer, a colorant and the like, and by a coating means such as hot melt coating, gravure coating or reverse roll coating as appropriate. , Thickness 1-20μ
The thickness is about m, preferably about 2 to 10 μm.

The thermal transfer ribbon that can be used in the present invention may have a structure in which an ink layer is simply provided on the ribbon base material, but more preferably, the surface of the ribbon base material opposite to the ink layer is lubricious. A heat-resistant back layer may be provided, and a matte layer for preventing the gloss of the printed matter may be provided between the ink layer and the ribbon substrate. If necessary, the ink layer may have a two-layer or three-layer structure. Therefore, for example, the back layer / ribbon substrate / mat layer / ink layer / ink layer is formed. For the back layer, for example, a thermosetting resin such as a melamine resin, a silicone resin, or a fluorine resin, a thermoplastic resin, or the like, to which a filler, a lubricant, an antistatic agent, or the like is appropriately added, is used. For the mat layer, for example, a thermoplastic resin such as polyester resin or vinyl acetate resin, or a thermosetting resin to which inorganic fine particles or organic fine particles such as silica or alumina are added is used.

In order to form a heat-sensitive adhesive ribbon integrated transparent pressure-sensitive adhesive label by laminating a heat-transfer ribbon through a temporary adhesive layer and temporarily adhering it to the transparent pressure-sensitive adhesive label provided with a scumming preventive layer, if necessary. It is general to apply the temporary adhesive layer coating liquid on the ink layer of the thermal transfer ribbon by the above-mentioned application means, and dry laminate to the transparent adhesive label by heat and pressure, but it is not particularly limited. For example, a temporary adhesive layer may be formed on the transparent adhesive label side. On the other hand, the formation of the background stain prevention layer is generally provided on the transparent adhesive label side.

The transparent adhesive label and the thermal transfer ribbon-integrated transparent adhesive label of the present invention described above may be in the form of a continuous ribbon or a sheet.

[0026]

According to the transparent adhesive label and the thermal transfer ribbon-integrated transparent adhesive label of the present invention, even if the adhesive layer thickness is 20 μm or less, since the release surface of the release paper is highly smooth, the release paper has an appropriate adhesive force. The adhesive layer is adhered to and held by the adhesive layer, and the surface of the adhesive layer after the release paper is peeled off is also highly smooth, so good adhesive force between the adhesive layer and the adherend can be obtained when the label is attached to the adherend. To be Further, by setting the haze of the adhesive layer and further the haze of the substrate to a specific haze value or less, more excellent transparency can be obtained. Further, thermal transfer printing can be easily performed by integrating the transparent adhesive label with the thermal transfer ribbon via the temporary adhesive layer. In addition, the background stain prevention layer interposed between the transparent base material and the temporary adhesion layer can prevent unnecessary transfer of the ink layer to the transparent adhesive label side in the non-printed portion. Further, by using a silicone-modified acrylic resin as the main component of the scumming prevention layer, excellent scumming prevention property is exhibited. Further, by setting the glass transition temperature of the resin which is the main component of the scumming prevention layer in the range of 50 to 100 ° C., excellent scumming prevention property is exhibited.

[0027]

EXAMPLES Next, the transparent adhesive label and the thermal transfer ribbon-integrated transparent adhesive label of the present invention will be described more specifically with reference to Examples and Comparative Examples. In the text, “part” is based on weight.

Example 1 A transparent polyethylene terephthalate film having a thickness of 50 μm was used as a transparent substrate, and an adhesive layer coating liquid having the following composition was applied to one surface of the transparent substrate by a gravure coater to obtain an adhesive layer having a thickness of 10 μm. Further, a white polyethylene terephthalate film having a thickness of 38 μm, one surface of which was release-treated with silicone, was stuck thereon to obtain a transparent transparent adhesive label of the present invention.

Adhesive layer coating liquid : 2-ethylhexyl acrylate self-crosslinking adhesive 20 parts Solvent (toluene + isopropyl alcohol) 80 parts

Example 2 Polyethylene was melt-extruded on one surface of a high-quality paper so as to have a concentration of 10 g / m ² , and further, a silicone release treatment was applied thereto by a release layer coating solution having the following composition. A transparent adhesive label of the present invention was obtained in the same manner as in Example 1 except that it was used as a release paper.

Release layer coating solution Amino-modified silicone 5 parts Solvent (toluene + methyl ethyl ketone) 80 parts

Example 3 A thermal transfer ribbon was formed by the following method, and a temporary adhesive layer coating solution having the following composition was applied onto the ink layer by a gravure direct method to form a temporary adhesive layer. The surface of the temporary adhesive layer of the heat transfer ribbon thus formed is shown in Example 1.
40 ℃, 3kg on the transparent substrate surface of the transparent adhesive label
The laminate was laminated under the condition of / cm ² and temporarily adhered to obtain a heat transfer ribbon-integrated transparent adhesive label of the present invention.

Thermal Transfer Ribbon A 6 μm polyethylene terephthalate film was used as a transparent substrate, and the following ink layer coating solution was applied to one side of the film by a gravure direct method to obtain a 3 μm thick ink layer to obtain a thermal transfer ribbon.

Ink layer coating liquid Microcrystalline wax 15 parts Ethylene-vinyl acetate copolymer 15 parts Carnauba wax 20 parts Paraffin wax 40 parts Colorant (phthalocyanine blue) 10 parts

Temporary adhesive layer coating liquid Acrylic ester resin emulsion 10 parts Solvent (isopropyl alcohol + water) 90 parts

Example 4 In Example 3, as a transparent pressure-sensitive adhesive label to be laminated with the thermal transfer ribbon, a 0.5 μm-thick background stain-prevention layer was formed on the transparent base material of the transparent adhesive label, and a background stain-prevention layer having the following composition. A thermal transfer ribbon-integrated transparent pressure-sensitive adhesive label of the present invention was obtained in the same manner as in Example 3 except that the coating solution formed by applying the coating solution by the gravure direct method was used.

Stain prevention layer coating liquid Silicone-modified acrylic resin 5 parts Polyester resin 50 parts Methyl ethyl ketone 22.5 parts Toluene 22.5 parts

Comparative Example 1 A transparent adhesive label was obtained in the same manner as in Example 1 except that the adhesive layer had a thickness of 25 μm.

Comparative Example 2 A transparent adhesive label was obtained in the same manner as in Example 1 except that the adhesive layer had a thickness of 4 μm.

Comparative Example 3 A transparent adhesive label was obtained in the same manner as in Example 1 except that the adhesive layer had a thickness of 15 μm and the release paper was a release silicone paper on one side which was glassine paper.

<< Performance Evaluation >> Table 1 shows the evaluation results of various performances of the above-mentioned Examples and Comparative Examples. When peeling off the release paper of the transparent adhesive label, and after sticking the transparent adhesive label to an adherend (PPC paper with Beck smoothness of 40 to 50 seconds), the adhesive force when peeled from the adherend is 90 °. Evaluated by force, the character information is visually evaluated by visually observing the printed characters, and the haze of the adhesive layer is calculated from the haze of the transparent substrate + adhesive layer to the haze of the transparent substrate (the transparent substrate used in Examples and Comparative Examples. The haze of the material is 2.0
It was calculated by subtracting In the thermal transfer ribbon-integrated transparent adhesive label of Example 3, after printing, first, the ribbon base material of the thermal transfer ribbon was peeled off, and the ink layer was transferred to the transparent base material surface of the transparent label together with the temporary adhesive layer, and in the non-printed portion. The temporary adhesive layer and the transparent label are peeled off to form a normal transparent adhesive label. A commercially available thermal printer was used for the printing evaluation of the laminated thermal transfer ribbons.

Printing conditions Printing energy: 0.2 mJ / dot Thermal head: 300 dpi

[0043]

[Table 1]

[0044]

The transparent pressure-sensitive adhesive label of the present invention has a release paper having a release surface having a specific Beck smoothness and an adhesive layer having a specific thickness, so that the release paper and the adhesive layer have appropriate adhesiveness. Excellent adhesiveness between the adhesive layer and the adherend when the label is adhered to the adherend, and excellent transparency. Furthermore, by setting the haze of the pressure-sensitive adhesive layer to a specific value or less, the pattern on the surface of the adherend does not become cloudy at the time of sticking, and the transparency is good. Furthermore, by setting the haze of the transparent base material to a specific value or less, fogging of the surface of the adherend during sticking is further reduced, and the transparency is good. And
The above transparent adhesive label provides an overcoat layer on an adherend as an intermediate product capable of giving the following excellent heat transfer integral type transparent adhesive label and by a simple sticking treatment without coating. If the transparent substrate is colored and transparent, a colored overcoat layer is provided.

Further, in the transparent pressure-sensitive adhesive label integrated with the thermal transfer ribbon of the present invention, the thermal transfer ribbon and the transparent pressure-sensitive adhesive label are temporarily adhered to each other, so that the thermal transfer ribbon is not provided with a transport system. Thermal transfer printing is possible. Moreover, the release paper is unlikely to float or come off during transportation. Further, in a printer without such a thermal transfer ribbon transport system, since the thermal transfer paper is used, the weather resistance and the storage stability are inferior, but the integrated label of the present invention also has the weather resistance and the storage stability. Excel. In particular, the scumming prevention layer can effectively prevent storage stability and scumming at the time of printing, and can perform high-quality printing.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of a transparent adhesive label of the present invention.

FIG. 2 is a vertical cross-sectional view showing an embodiment of a thermal transfer ribbon-integrated transparent adhesive label of the present invention.

FIG. 3 is a vertical cross-sectional view showing another embodiment of the thermal transfer ribbon-integrated transparent adhesive label of the present invention.

[Explanation of symbols]

 1 Transparent Adhesive Label 2 Transparent Substrate 3 Adhesive Layer 4 Release Paper 5 Thermal Transfer Ribbon Integrated Transparent Adhesive Label 6 Thermal Transfer Ribbon 7 Ribbon Substrate 8 Ink Layer 9 Temporary Adhesion Layer 10 Stain Prevention Layer

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location C09J 7/02 JJT C09J 7/02 JKW JKW JLD JLD G09F 3/02 F G09F 3/02 7416-2H B41M 5/26 G

Claims (7)

[Claims] 1. A transparent pressure-sensitive adhesive label in which an adhesive layer and a release paper are laminated in this order on one surface of a transparent substrate, wherein the release surface of the release paper has a Bekk smoothness of 10,000 seconds or more and a thickness of the adhesive layer of 5 to 5. A transparent adhesive label having a thickness of 20 μm. 2. The haze value of the adhesive layer, which is a value obtained by subtracting the haze value of the transparent substrate from the haze value of the transparent substrate and the adhesive layer, is 10 or less. Adhesive label. 3. The transparent adhesive label according to claim 1, wherein the transparent substrate has a haze value of 5 or less. 4. The thermal transfer ribbon for the transparent pressure-sensitive adhesive label according to any one of claims 1 to 3, with a temporary adhesive layer interposed on the surface of the transparent base material of the transparent adhesive label opposite to the surface on which the adhesive layer is formed. The thermal adhesive ribbon integrated transparent adhesive label is characterized in that is temporarily adhered to the ink layer surface. 5. A scumming preventive layer for preventing the temporary adhesive layer or the temporary adhesive layer and the ink layer of the non-printed part from migrating to the transparent adhesive label side when the thermal transfer ribbon is peeled off is provided on the temporary adhesive layer and the transparent adhesive label. The transparent pressure-sensitive adhesive label integrated with a thermal transfer ribbon according to claim 4, wherein the transparent adhesive label is interposed between the transparent base material and the transparent substrate. 6. The thermal transfer ribbon-integrated transparent adhesive label according to claim 5, wherein the background stain-preventing layer contains a silicone-modified acrylic resin as a main component. 7. The thermal transfer ribbon-integrated transparent pressure-sensitive adhesive label according to claim 5, wherein the resin as the main component of the background stain prevention layer has a glass transition temperature of 50 to 100 ° C.