JP6798222B2 - Paper label - Google Patents

Description

The present invention relates to paper labels used for glass bottles, plastic bottles, cups and the like. In particular, the present invention relates to a decorative paper label that has been given beauty and tactile sensation by using an ultraviolet curable varnish.

Conventionally, as a decoration method for giving beauty and tactile sensation to paper labels used for glass bottles, plastic bottles, cups, etc., a method of three-dimensionally processing by pressing an embossed mold according to a printed pattern is used. It has been broken.

However, when giving a three-dimensional effect by such embossing, it is necessary to provide an embossing process separately from the printing process, and since the processing is performed using a dedicated embossing machine and a dedicated embossing mold, the number of processing steps is large. There is a problem that the number increases, the lead time between each process also increases, and the manufacturing cost increases.

Therefore, a method of imparting a three-dimensional effect by partially applying a thick coat of varnish used in the printing process of a paper label has also been studied.
However, the varnish used in the gravure printing process for thin paper having a basis weight of 30 to 120 g / m ² used for paper labels is generally a heat-drying varnish, and is thick enough to be easily recognized by humans. When coated, there is a problem that the drying capacity of the oven provided in the gravure printing machine does not complete the drying of the thick coated portion.

In this case, the drying of the thick coated portion can be completed by lowering the printing speed in order to compensate for the lack of drying capacity, but there is a problem that mass productivity is poor and the manufacturing cost is increased.

Therefore, as a method for solving the problems caused by embossing and thick coating of heat-drying varnish, a method using a fast-curing ultraviolet curable varnish has been studied (for example, Patent Document 1).
However, the coating method as in Patent Document 1 is good when used for thick paper mainly used for cigarette packages, but when applied to a paper label made of thin paper having a basis weight of 30 to 120 g / m ² . Due to the curing shrinkage that occurs during UV curing, there is a problem that so-called debossing (reverse embossing) that protrudes to the back surface side occurs in the region coated with the UV curable varnish. When debossing occurs, a dent is generated in the region coated with the ultraviolet curable varnish, so that there is a problem that the expected effect cannot be obtained.

Here, when attaching a paper label to an adherend such as a glass bottle, apply glue to the back surface of the paper label and attach it directly to the adherend, or apply an adhesive to the back surface of the paper label. In many cases, the separator film is attached to the separator film, and then the separator film is peeled off and attached to the adherend.
At this time, when an attempt is made to attach a paper label in a state where debossing is generated by applying an ultraviolet curable varnish to the surface of the adherend, the back surface to which glue or an adhesive is applied has irregularities. , Glue or adhesive was difficult to apply evenly, and as a result, the suitability for tagging was inferior. That is, there has been a problem that the paper label attached to the adherend has wrinkles or a part of the label is lifted from the adherend.

International Publication No. 2013/042187

The present invention has been made in view of the above circumstances, and is a decorative paper label that imparts beauty and tactile sensation to a paper label used for glass bottles, plastic bottles, cups, etc., and has a manufacturing cost. It is an object of the present invention to provide a paper label capable of exerting a decorative effect without increasing the amount of the label and causing debossing.

The present invention has been made in view of the above problems, and the paper label of the present invention is a paper label having a paper base material layer made of paper having a basis weight of 30 to 120 g / m ² , and the paper base. A varnish layer having a thickness of 5 to 30 μm is formed in a pattern on the material layer, and the varnish used for the varnish layer is an ultraviolet curable varnish, and the thickness after curing the ultraviolet curable varnish is 5 μm. When the curl amount when applied on a PET film having a thickness of 25 μm and irradiated with ultraviolet rays is taken as the curable curl amount, the curable curl amount of the ultraviolet curable varnish is 1 mm or less.

Further, in the paper label of the present invention, the total area of the varnish layer forming region with respect to the area of the entire surface of the paper base material layer may be in the range of 10 to 60%.

The present invention has been made in view of the above problems, and the paper label of the present invention is a paper label having a paper base material layer made of paper having a basis weight of 30 to 120 g / m ² , and the paper base. A varnish layer having a thickness of 5 to 30 μm is formed in a pattern on the material layer, and the varnish used for the varnish layer is an ultraviolet curable varnish, and the thickness after curing the ultraviolet curable varnish is 5 μm. When the curl amount when applied on a polyethylene terephthalate ( PET ) film having a size of 100 mm × 100 mm and a thickness of 25 μm and irradiated with ultraviolet rays is taken as the curable curl amount, the curable curl of the ultraviolet curable varnish The amount is 1 mm or less.

According to the paper label of the present invention, a varnish layer using an ultraviolet curable varnish having a cured curl amount of 1 mm or less is formed in a pattern with a thickness of 5 to 30 μm, so that the basis weight is 30 to 120 g / g. Even if the label is made of paper using m ² thin paper, it does not cause debossing during UV curing, and it can be coated and dried (cured) in-line, so the manufacturing cost does not increase and the surface surface. It is possible to produce a decorative effect with unevenness.

Further, by setting the total area of the formation region of the varnish layer (the area ratio of the total formation region of the varnish layer) to 10 to 60% with respect to the area of the entire surface of the paper base material layer, three-dimensional addition due to surface unevenness is added. It is possible to further enhance the effect of decoration.
This is because by setting the area ratio of the entire varnish-forming region of the varnish layer to 10% or more, it becomes easier to recognize a three-dimensional effect having surface irregularities both visually and tactilely. On the other hand, by setting the area ratio of the total varnish forming region of the varnish layer to 60% or less, the varnish forming region does not become too wide, so that a sufficient three-dimensional effect can be obtained. That is, it is possible to easily recognize the unevenness of the pattern that is clearly different from the entire surface coating.

Further, by setting the area per varnish forming region on which the varnish layer is formed to be in the range of 0.2 to 200 mm ² , it is possible to further enhance the effect of three-dimensional decoration due to surface unevenness. Will be.
This is because by setting the varnish forming region per one of the varnish layers to 0.2 mm ² or more, it becomes easy to recognize one varnish forming region both visually and tactilely, thereby giving a three-dimensional effect having surface irregularities. This is because it becomes easier to recognize. If the varnish forming region per one is smaller than 0.2 mm ² , there is a risk that it looks like a matte varnish as a whole.
On the other hand, by setting the varnish forming region per one of the varnish layers to 200 mm ² or less, it is easily recognized that the varnish is a three-dimensional decoration formed in a pattern without being mistaken for a simple solid coating. It becomes possible. If the varnish forming area per one is made larger than 200 mm ² , it will be recognized that the varnish layer is partially formed only at a specific part of the paper label instead of the patterned decoration, which is expected. There is a risk that it will not be able to say that it has a decorative effect. In addition, if the varnish forming region per one is larger than 200 mm ² , there is a possibility that cracks may occur in the varnish forming region.

It is a laminated cross-section explanatory view which shows typically the embodiment of the paper label of this invention. It is explanatory drawing which showed typically the calculation method of the curing curl amount of the ultraviolet curable varnish.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

In the paper label 1 of the present invention, as shown in FIG. 1, a pattern printing layer 3 and an OP (Over Print) varnish layer 4 are laminated on a paper base material layer 2, and a varnish made of an ultraviolet curable varnish is formed therein. The layer 5 is formed in a pattern.

The paper used for the paper base material layer 2 may be a thin paper that can be neatly wrapped around a substantially columnar cylinder body such as a glass bottle, a plastic bottle, or a cup and attached to a tag. Paper with an amount of 30-120 g / m ² is used. The type of paper is not particularly limited, and art paper, imitation paper, kraft paper, metal vapor deposition paper, etc. that can be used for general paper labels can be used.
However, considering that the pattern printing layer 3 is provided on the surface and that a decorative effect is imparted, art paper in which a white coating agent is applied to uniformly treat the surface, or a thin film of metal vapor deposition on the surface. It is preferable to use a metal-deposited paper or the like which is formed into a shape and whose surface is uniformly treated. Considering that the manufacturing cost can be kept low, the art paper is preferably a single-sided art paper coated on only one side, and the metal used for the metal-deposited paper is preferably aluminum.
When metal-deposited paper is used, a metal-deposited layer is formed on the anchor-coated layer after forming an anchor-coated layer in consideration of bottle washability, and the metal-deposited layer is topped with antioxidative metal deposition. It is preferable to form an overcoat layer in consideration of adhesion to the pattern printing layer 3.

The ink used for the pattern printing layer 3 is not particularly limited, and a gravure printing ink generally used in the printing process of a paper label is applied.
Further, the OP varnish layer 4 applied so as to cover the entire surface of the pattern printing layer 3 is a layer formed for the purpose of preventing discoloration of the pattern printing layer 3 by applying a transparent oil-based solvent to the surface. Therefore, OP varnish commonly used for gravure printing can be applied. However, considering that the OP varnish layer 4 and the varnish layer 5 have an adhesive strength to the extent that the (ultraviolet curable) varnish layer 5 formed on the OP varnish layer 4 is not peeled off, the nitrocellulose-based OP It is preferable to use varnish.

The ultraviolet curable varnish used for the varnish layer 5 is not particularly limited as long as the amount of curled curl during ultraviolet curing is 1 mm or less, and contains a radical polymerization type containing acrylate or silicon as a main component and an epoxy as a main component. Any of the cationically polymerized types can be used. However, in general, the cationically polymerized UV-curable varnish has a lower curing curl amount than the radically polymerized varnish, but in the case of the cationically polymerized varnish, it reacts not only during UV irradiation but also after UV irradiation. Therefore, it becomes difficult to control the quality, so it is preferable to select the radical polymerization type in consideration of the quality assurance as a product.

Here, the curing curl amount H of the ultraviolet curable varnish used can be calculated as follows.
First, the test piece 10 is applied by applying an ultraviolet curable varnish 50 to the entire surface of a polyethylene terephthalate (PET) film 60 having a size of 100 mm × 100 mm and a thickness of 25 μm so that the thickness after curing is 5 μm. create. Then, the test piece 10 is irradiated with ultraviolet rays to cure the ultraviolet curable varnish 50. When the curing of the ultraviolet curable varnish 50 is completed, the ultraviolet curable varnish 50 shrinks, so that the four corners of the test piece 10 float upward and warp as shown in FIG. At this time, the heights h1, h2, h3, and h4 (h4 are not shown) from the horizontal table at each corner of the test piece 10 are measured. Then, the cured curl amount H of the ultraviolet curable varnish 50 used for the test piece 10 can be calculated by setting the average value of the four warp amounts (curl amounts) as the cured curl amount H of the test piece 10. ..

In the varnish layer 5, a plurality of varnish forming regions 51 are formed in a pattern, and the area of one varnish forming region 51 is preferably in the range of 0.2 to ²⁰⁰ mm ² . By setting the varnish forming region 51 per one to the size of this range, there is no possibility that the varnish layer 5 for surface unevenness is not noticed because it is too small, and conversely, the pattern is too large. There is no risk of not being noticed that it is formed in a shape. Further, if the area of each varnish forming region 51 is larger than 200 mm ² , cracks may occur in the varnish forming region, which is not preferable. The shape of the varnish forming region 51 is not particularly limited, and may be a shape of a geometric figure such as a circle or a polygon, a character shape, a specific logo shape, or the like.

Further, the ratio of the total area of all the varnish forming regions 51 to the area of the entire surface of the paper label 1, that is, the area ratio of all the varnish forming regions 51 of the varnish layer 5 is in the range of 10 to 60%. Is preferable. By setting the area ratio of the entire varnish forming region 51 to this range, there is no possibility that the varnish forming region 51 is too small to be noticed that the varnish layer 5 is provided, and conversely, the varnish forming region 51 is the whole. There is no risk of not being noticed that it is formed in a pattern because it spreads too much.

It is preferable that the varnish forming regions 51 have substantially the same shape and are regularly arranged. By forming the varnish layer 5 in this way, it is possible to make the person who sees the paper label 1 recognize that the beautiful pattern-like decoration is applied. However, it is not necessary to make all the entire surface of the paper label 1 substantially the same shape. For example, the circular varnish forming regions 51 are regularly arranged in a predetermined range of a part of the paper label 1 and the same paper label is used. The varnish forming region 51 having substantially the same shape is provided in a range in which it can be recognized that the pattern decoration is applied, such as regularly arranging the polygonal varnish forming regions 51 in a predetermined range of another portion of 1. It suffices if they are arranged regularly.

Next, a method for manufacturing the paper label 1 will be described. There are two manufacturing methods for the paper label 1 depending on whether the paper label 1 is glued or a separate film is used.
When the paper label 1 is glued, there are three manufacturing processes: a printing process by a gravure printing machine, a slit process, and a tag pasting process. In the printing process, a pattern printing layer 3 is formed and an OP varnish layer 4 is formed. The formation and the formation of the varnish layer 5 are included.

First, the printing process will be described.
The pattern printing layer 3 is printed on the paper base material layer 2 with a gravure printing machine. At this time, the hue and the number of colors of the printing ink are not particularly limited, and the printing conditions are not particularly limited. For example, the number of lines (the number of mesh dots lined up around 1 inch) 200 thickness (the depth of the recess of the gravure plate) 25 μm. After applying with, dry with hot air.
Next, the OP varnish layer 4 is formed so as to cover the entire surface of the pattern printing layer 3. A gravure printing machine is also used to form the OP varnish layer 4. The coating conditions of the OP varnish layer 4 are not particularly limited, but for example, the OP varnish layer 4 is coated with a wire number of 175 and a thickness of 25 μm and then dried with hot air.
Next, the varnish layer 5 is formed in a pattern. A gravure printing machine is also used to form the varnish layer 5. The coating conditions of the varnish layer 5 are not particularly limited, and the height of the varnish layer 5 after UV curing may be in the range of 5 to 30 μm. For example, an ultraviolet curable varnish is applied with a number of lines of 70 and a thickness of 75 μm, and then the ultraviolet curable varnish is cured by irradiating with ultraviolet rays. Here, the conditions for irradiating with ultraviolet rays are not particularly limited, but the irradiation intensity is appropriately adjusted so that the varnish layer 5 does not have tack (adhesiveness on the surface of the coating film).

Next, the slit process will be described.
As shown in FIG. 1, the paper label 1 in which the pattern printing layer 3, the OP varnish layer 4, and the varnish layer 5 are formed on the paper base material layer 2 is used in the tagging process after the printing process is completed. Cut into morphology. At this time, the cutting form can be appropriately set according to the machine used in the tagging process, and it is possible to cut so as to line up in a row in a roll shape or cut out into a final label shape. .. A slit processing machine having a known mechanism is used for the slit process.

Next, the tagging process will be described.
The paper label 1 cut into a predetermined shape is attached to the adherend on the same production line as the filling before or after filling the adherend such as a glass bottle or a plastic bottle with the contents. When a roll-shaped label is used, it is cut to the size of one label at the time of tagging, and immediately after that, glue is applied and the paper label 1 is attached to the adherend. When the final label shape is cut out in the slitting process, the paper labels 1 are taken out one by one from a tag sticker loaded with a plurality of paper labels 1, and glue is applied to the adherend. Label it on.

Next, another manufacturing method when a separator film is used for the paper label 1 will be described.
When a separator film is used for the paper label 1, there are four manufacturing processes: a printing process using a gravure printing machine, an adhesive bonding process, a punching process, and a tag bonding process. The printing process includes the pattern printing layer 3 The formation of, the formation of the OP varnish layer 4, and the formation of the varnish layer 5 are included.
The printing process is the same as the printing process of the paper label 1 when the separator film is not used.

The adhesive bonding process will be described.
As shown in FIG. 1, the paper label 1 in which the pattern printing layer 3, the OP varnish layer 4, and the varnish layer 5 are formed on the paper base material layer 2 is the paper base material layer 2 after the printing process is completed. An adhesive is applied to the back surface and bonded to the separator film. The materials of the pressure-sensitive adhesive and the separator film used here are not particularly limited, and those used as general tack labels are applied.

Next, the punching process will be described.
The paper label 1 coated with the adhesive and bonded to the separator film is subjected to a punching process in which a half cut is made in the final label shape to remove unnecessary portions.

Next, the tagging process will be described.
The paper label 1 with a separator film from which unnecessary portions have been removed is attached to the adherend on the same production line as the filling before or after filling the adherend such as a glass bottle or a plastic bottle with the contents. When attaching the tag, the paper label 1 is peeled off from the separator film, and the tag is attached to the adherend using the adhesive force of the adhesive.

Specific examples of the present invention will be described below.

<Example 1>
Using a piece of art paper having a basis weight of 79.1 g / m ^{2 for} the paper base material layer 2, a pattern printing layer 3 and an OP varnish layer 4 are formed, and an ultraviolet curing having a curing curl amount of 0 mm is formed on the OP varnish layer 4. A mold varnish was applied and irradiated with ultraviolet rays to form a varnish layer 5 to obtain a paper label 1. The varnish layer 5 formed at this time had a thickness of 15 μm, the area of each varnish forming region 51 was 1.5 mm ² , and the area ratio of the total varnish forming region was 10%. A mercury lamp H256-L41X manufactured by Eye Graphics Co., Ltd. was used for ultraviolet irradiation. The obtained paper label 1 was cut into a roll shape in a slitting step, and immediately after being cut to the size of one label, glue was applied and a tag was attached to the adherend.
For the paper label 1 before attaching the tag to the adherend, the visual effect (can you visually see that a convex pattern is formed on the label surface) and the tactile effect (the label surface when touched with fingers)? It can be seen that a pattern of unevenness is formed on the surface). In addition, during the manufacturing process of the paper label 1, it was confirmed whether the paper label 1 after the printing process could be wound normally (winding suitability). Finally, with respect to the paper label 1 attached to the adherend, the suitability for attaching the tag (whether the label was attached to the adherend without wrinkles or floating) was confirmed. Table 1 shows the results of checking each item.

<Example 2>
The paper label is the same as in Example 1 except that the paper base material layer 2 is changed to aluminum-deposited paper having a basis weight of 60 g / m ² and the area ratio of the entire varnish forming region of the varnish layer 5 is changed to 20%. I got 1. The obtained paper label 1 was cut into a label shape in a slitting step, and then glue was applied in a tagging step to attach the tag to the adherend.
Check the visual and tactile effects of the paper label 1 before attaching the tag to the adherend, and check the winding suitability during the manufacturing process and the tag attachment suitability of the paper label 1 attached to the adherend. confirmed. The confirmed results are shown in Table 1.

<Example 3>
The paper label is the same as in Example 1 except that the thickness of the varnish layer 5 is 14 μm, the area of each varnish forming region 51 is 16 mm ² , and the area ratio of the total varnish forming region is changed to 50%. I got 1. An adhesive was applied to the back surface of the paper base material layer 2 of the obtained paper label 1 and a separator film was attached, and then the separator film was peeled off and a tag was attached to the adherend.
Check the visual and tactile effects of the paper label 1 before attaching the tag to the adherend, and check the winding suitability during the manufacturing process and the tag attachment suitability of the paper label 1 attached to the adherend. confirmed. The confirmed results are shown in Table 1.

<Example 4>
A paper label 1 was obtained in the same manner as in Example 1 except that the thickness of the varnish layer 5 was changed to 27 μm. The obtained paper label 1 was cut into a roll shape in a slitting step, and immediately after being cut to the size of one label, glue was applied and a tag was attached to the adherend.
Check the visual and tactile effects of the paper label 1 before attaching the tag to the adherend, and check the winding suitability during the manufacturing process and the tag attachment suitability of the paper label 1 attached to the adherend. confirmed. The confirmed results are shown in Table 1.

<Example 5>
A paper label 1 was obtained in the same manner as in Example 1 except that the thickness of the varnish layer 5 was changed to 6 μm. The obtained paper label 1 was cut into a roll shape in a slitting step, and immediately after being cut to the size of one label, glue was applied and a tag was attached to the adherend.
Check the visual and tactile effects of the paper label 1 before attaching the tag to the adherend, and check the winding suitability during the manufacturing process and the tag attachment suitability of the paper label 1 attached to the adherend. confirmed. The confirmed results are shown in Table 1.

<Example 6>
A paper label 1 was obtained in the same manner as in Example 1 except that the area ratio of the entire varnish forming region of the varnish layer 5 was changed to 55%. The obtained paper label 1 was cut into a roll shape in a slitting step, and immediately after being cut to the size of one label, glue was applied and a tag was attached to the adherend.
Check the visual and tactile effects of the paper label 1 before attaching the tag to the adherend, and check the winding suitability during the manufacturing process and the tag attachment suitability of the paper label 1 attached to the adherend. confirmed. The confirmed results are shown in Table 1.

<Example 7>
A paper label 1 was obtained in the same manner as in Example 1 except that the area of the varnish forming region 51 per one of the varnish layers 5 was changed to 0.3 mm ² . The obtained paper label 1 was cut into a roll shape in a slitting step, and immediately after being cut to the size of one label, glue was applied and a tag was attached to the adherend. Check the visual and tactile effects of the paper label 1 before attaching the tag to the adherend, and check the winding suitability during the manufacturing process and the tag attachment suitability of the paper label 1 attached to the adherend. confirmed. The confirmed results are shown in Table 1.

<Example 8>
A paper label 1 was obtained in the same manner as in Example 1 except that the area of the varnish forming region 51 per one of the varnish layers 5 was changed to 80 mm ² . At this time, the varnish forming region 51 has a circular shape with a diameter of 10 mm. The obtained paper label 1 was cut into a roll shape in a slitting step, and immediately after being cut to the size of one label, glue was applied and a tag was attached to the adherend.
Check the visual and tactile effects of the paper label 1 before attaching the tag to the adherend, and check the winding suitability during the manufacturing process and the tag attachment suitability of the paper label 1 attached to the adherend. confirmed. The confirmed results are shown in Table 1.

<Example 9>
A paper label 1 was obtained in the same manner as in Example 1 except that the area of the varnish forming region 51 per one of the varnish layers 5 was changed to 177 mm ² . At this time, the varnish forming region 51 has a circular shape with a diameter of 15 mm. The obtained paper label 1 was cut into a roll shape in a slitting step, and immediately after being cut to the size of one label, glue was applied and a tag was attached to the adherend.
Regarding the paper label 1 attached to the adherend, each item of visual effect, tactile effect, winding suitability, and tag sticking suitability was confirmed. The confirmed results are shown in Table 1.

<Example 10>
A paper label 1 was obtained in the same manner as in Example 1 except that the area ratio of the entire varnish forming region of the varnish layer 5 was changed to 70%. The obtained paper label 1 was cut into a roll shape in a slitting step, and immediately after being cut to the size of one label, glue was applied and a tag was attached to the adherend.
Check the visual and tactile effects of the paper label 1 before attaching the tag to the adherend, and check the winding suitability during the manufacturing process and the tag attachment suitability of the paper label 1 attached to the adherend. confirmed. The confirmed results are shown in Table 1.

<Example 11>
A paper label 1 was obtained in the same manner as in Example 1 except that the area ratio of the entire varnish forming region of the varnish layer 5 was changed to 3%. The obtained paper label 1 was cut into a roll shape in a slitting step, and immediately after being cut to the size of one label, glue was applied and a tag was attached to the adherend.
Check the visual and tactile effects of the paper label 1 before attaching the tag to the adherend, and check the winding suitability during the manufacturing process and the tag attachment suitability of the paper label 1 attached to the adherend. confirmed. The confirmed results are shown in Table 1.

<Example 12>
A paper label 1 was obtained in the same manner as in Example 1 except that the area of the varnish forming region 51 per one of the varnish layers 5 was changed to 314 mm ² . At this time, the varnish forming region 51 has a circular shape with a diameter of 20 mm. The obtained paper label 1 was cut into a roll shape in a slitting step, and immediately after being cut to the size of one label, glue was applied and a tag was attached to the adherend.
Check the visual and tactile effects of the paper label 1 before attaching the tag to the adherend, and check the winding suitability during the manufacturing process and the tag attachment suitability of the paper label 1 attached to the adherend. confirmed. The confirmed results are shown in Table 1.

<Example 13>
A paper label 1 was obtained in the same manner as in Example 1 except that the area of the varnish forming region 51 per one of the varnish layers 5 was changed to 0.1 mm ² . The obtained paper label 1 was cut into a roll shape in a slitting step, and immediately after being cut to the size of one label, glue was applied and a tag was attached to the adherend. Check the visual and tactile effects of the paper label 1 before attaching the tag to the adherend, and check the winding suitability during the manufacturing process and the tag attachment suitability of the paper label 1 attached to the adherend. confirmed. The confirmed results are shown in Table 1.

<Comparative example 1>
A paper label was obtained in the same manner as in Example 1 except that the ultraviolet curable varnish used for the varnish layer 5 was changed to one having a curing curl amount of 8.3 mm and the thickness of the varnish layer 5 was changed to 20 μm. The obtained paper label was cut into a roll shape in a slitting step, and immediately after being cut to the size of one label, glue was applied and a tag was attached to the adherend.
The visual and tactile effects were confirmed for the paper label before the tag was attached to the adherend, and the winding suitability during the manufacturing process and the tag attachment suitability for the paper label attached to the adherend were confirmed. .. The confirmed results are shown in Table 1.

<Comparative example 2>
A paper label was obtained in the same manner as in Example 2 except that the ultraviolet curable varnish used for the varnish layer 5 was changed to one having a curing curl amount of 8.3 mm and the thickness of the varnish layer 5 was changed to 20 μm. The obtained paper label was cut into a label shape in a slitting step, and then glue was applied in a tagging step to attach the tag to the adherend.
The visual and tactile effects were confirmed for the paper label before the tag was attached to the adherend, and the winding suitability during the manufacturing process and the tag attachment suitability for the paper label attached to the adherend were confirmed. .. The confirmed results are shown in Table 1.

<Comparative example 3>
A paper label was obtained in the same manner as in Example 3 except that the ultraviolet curable varnish used for the varnish layer 5 was changed to one having a curing curl amount of 8.3 mm and the thickness of the varnish layer 5 was changed to 18 μm. An adhesive was applied to the back surface of the paper base material layer 2 of the obtained paper label and the separator film was attached, and then the separator film was peeled off and attached to the adherend.
The visual and tactile effects were confirmed for the paper label before the tag was attached to the adherend, and the winding suitability during the manufacturing process and the tag attachment suitability for the paper label attached to the adherend were confirmed. .. The confirmed results are shown in Table 1.

<Comparative example 4>
A paper label was obtained in the same manner as in Example 1 except that the thickness of the varnish layer 5 was changed to 40 μm. Since the obtained paper label could not be wound normally in the winding after the printing process, the subsequent slitting process and the tagging process could not be performed.
The visual and tactile effects of the paper label before it was attached to the adherend were confirmed, and the winding suitability during the manufacturing process was also confirmed. The confirmed results are shown in Table 1.

<Comparative example 5>
A paper label was obtained in the same manner as in Example 1 except that the thickness of the varnish layer was changed to 2 μm. The obtained paper label was cut into a roll shape in a slitting step, and immediately after being cut to the size of one label, glue was applied and a tag was attached to the adherend.
The visual and tactile effects were confirmed for the paper label before the tag was attached to the adherend, and the winding suitability during the manufacturing process and the tag attachment suitability for the paper label attached to the adherend were confirmed. .. The confirmed results are shown in Table 1.

In Table 1, "visual effect" is an item for visually confirming whether or not a convex pattern is visually formed on the label surface, and items in which the convex pattern can be easily confirmed are marked with ○. When viewed carefully, those in which the convex pattern can be confirmed are marked with Δ, and those in which the convex pattern cannot be confirmed or are dented (debossed) and are not in the convex pattern are marked with ×.
In addition, the "tactile effect" is an item for confirming whether or not an uneven pattern is formed on the label surface when touched with fingers. Those that can be easily confirmed are ○, and those that can be confirmed by careful touch. Δ, and those that could not be confirmed were marked as ×.
In addition, "winding suitability" is an item for confirming whether the paper label can be wound normally during the manufacturing process of the paper label and after the printing process. Those that do not exist are designated as x.
In addition, "adequacy for tagging" is an item for checking whether the paper label after tagging on the adherend is attached to the adherend without wrinkles or floating. Those with no wrinkles and those with affixed tags were marked with ○, and those with wrinkles or floating were marked with ×.
In addition, "Comprehensive evaluation" is an item to confirm whether the paper label attached to the tag is appropriate as a product, and the one that is excellent as a product is ○, the one that is sufficient as a product is △, and the one that cannot be used as a product. × ,.

<Comparison result>
Using an ultraviolet curable varnish with a curing curl amount of 0 mm, the thickness of the varnish layer 5 is within the range of 5 to 30 μm, and the area ratio of the entire varnish forming region is within the range of 10 to 60%. In Examples 1 to 9 in which the area of the varnish forming region 51 per varnish is within the range of 0.2 to 200 mm ² , all the items of visual effect, tactile effect, winding suitability, and tag sticking suitability are marked with ○. The convex pattern can be easily confirmed both visually and when touched with fingers, and normal winding is possible, and the tag is attached to the adherend without wrinkles or floating. It can be seen that the paper label 1 can be manufactured.
At this time, since the same good results as those of other examples such as Example 1 were obtained in Example 2 in which the paper base material layer 2 was changed and Example 3 in which the separate film was used, the present invention is based on paper. It can be seen that it does not depend on the type of the base material layer 2 or the bonding method with the adherend.

On the other hand, in Examples 10 and 11 in which the area ratio of the total varnish forming region was 70% and 3%, the visual effect was Δ, but the other items such as the tactile effect were ◯. This is because, in Example 10, since the area ratio of the entire varnish forming region is as large as 70%, the varnish layer 5 seems to be formed over the entire area, so that it is necessary to look carefully. Is. This is because, in Example 11, since the area ratio of the total varnish forming region is as small as 3%, it is easy to overlook the formation of the varnish layer 5, and it is necessary to carefully observe it.
However, in any case, it can be sufficiently confirmed that the desired decorative effect is obtained by looking at it with some care, and it can be said that the product has sufficient performance.

In Example 12 of the area of varnish formation region 51 per one is 314 mm ² visual effects, Example 13 of the area of one per varnish formation region 51 0.1 mm ² has a visual effect and tactile effect , Each is △. This is because, in Example 12, since the area of the varnish forming region 51 is large, it looks like a partially solid varnish rather than a pattern shape, so it is necessary to look carefully. This is because, in Example 13, since the area of the varnish forming region 51 is small, it is likely that the varnish layer 5 is formed, and it is necessary to carefully look at and touch it.
However, in any case, it can be sufficiently confirmed that the desired decorative effect is obtained by looking and touching it with some care, and it can be said that the product has sufficient performance.

On the other hand, in Comparative Examples 1 to 3, the visual effect and the suitability for tagging are x. This is due to the fact that the amount of curled curl of the ultraviolet curable varnish used for the varnish layers 5 of Comparative Examples 1 to 3 is as large as 8.3 mm, which causes debossing, and the glue and adhesive at the time of tag sticking are used. As a result of not being able to apply evenly, wrinkles and floating occurred on the paper label after the tag was affixed, making it unusable as a product.

Further, in Comparative Example 4, the winding suitability was x, and the tag sticking process could not be performed, so that the tag sticking suitability was not evaluated. This is because the thickness of the varnish layer 5 was formed as thick as 40 μm, so that the entire paper label became uneven and wavy at the time of winding, and the varnish layer 5 could not be wound normally. In addition, since the tagging process could not be performed, it cannot be used as a product, so the overall evaluation is x.

Further, in Comparative Example 5, the visual effect and the tactile effect are x. This is because the thickness of the varnish layer 5 is as thin as 2 μm, which makes it indistinguishable from the OP varnish layer 4, and the desired decorative effect cannot be obtained. Since the decoration effect could not be confirmed either visually or tactilely, the decoration paper label cannot be used as a product, so the overall evaluation is also x.

As a result, according to the present invention, it is a decorative paper label that imparts beauty and tactile sensation to a paper label used for glass bottles, plastic bottles, cups, etc., without increasing the manufacturing cost and. It is possible to provide a paper label that has a decorative effect without causing debossing.

1 ... Paper label 2 ... Paper base material layer 3 ... Picture printing layer 4 ... OP varnish layer 5 ... Varnish layer 51 ... Varnish forming region 10 ... Test piece 50 ...・ ・ UV curable varnish 60 ・ ・ ・ PET film

Claims (3)

A paper label having a paper substrate layer made of paper having a basis weight of 30 to 120 g / m ² .
A varnish layer having a thickness of 5 to 30 μm is formed in a pattern on the paper base material layer.
The varnish used for the varnish layer is an ultraviolet curable varnish and is
The amount of curl when the ultraviolet curable varnish is applied onto a polyethylene terephthalate ( PET ) film having a size of 100 mm × 100 mm and a thickness of 25 μm so as to have a thickness of 5 μm after curing and irradiated with ultraviolet rays is the amount of curl. When
A paper label having a cured curl amount of 1 mm or less for the ultraviolet curable varnish. The paper label according to claim 1.
A paper label, wherein the total area of the varnish-forming region of the varnish layer is in the range of 10 to 60% with respect to the area of the entire surface of the paper base material layer. The paper label according to claim 1 or 2.
A paper label having an area of 0.2 to 200 mm ² per varnish-forming region on which the varnish layer is formed.

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