Attention label

Abstract

To provide an attention label which does not cause deflection due to own weight to peripheral temperature change and humidity change and makes an adhered part difficult to be peeled off even though wood pulp is made a raw material for base paper.SOLUTION: An attention label 1 which is adhered onto a curved surface in an object to be adhered having the curved surface formed by curving a flat member so as to stand in an axial direction includes base paper 10 containing a sizing agent, a wet strength agent, and a dry strength agent, has an adhesive region 11 and a non-adhesive region 12 on one surface of the base paper, and has an information display region on the other surface of the base paper, the adhesive region extends in a direction perpendicular to a standing direction at one end on a standing direction side in the base paper, the adhesive region has an adhesive layer containing an acrylic pressure sensitive adhesive, a Clark stiffness in a standing direction of the base paper is 100 to 280 cm3 / 100, a Clark stiffness in the direction perpendicular to the standing direction in the base paper is 100 to 280 cm3 / 100, and the paper includes a wood pulp as a raw material.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to an attention label to be attached to an exhibition product or the like.

Background Art

[0002] An attention label is known which has an adhesive area and a non-adhesive area on one hand, and by attaching it to a product through the adhesive area, a part which is the non-adhesive area protrudes from the product, thereby enhancing the attention-grabbing property of the product.

[0003] Conventional attention labels often use a PET film with a transparent or aluminum vapor deposition on the surface substrate, or white PET (foamed PET film), aiming to promote sales by making the product more conspicuous.

[0004] In order to promote sales, the following points are considered. First, the attached label is difficult to deform in response to environmental changes in the surroundings, such as temperature changes and humidity changes. For example, a product bottle (such as a PET bottle) is sold with an attention label attached, and the bottle may be stored in a heat preservation device to cool or warm the internal liquid. Since the inside of the heat preservation device is maintained at a controlled temperature and humidity, the attached attention label is directly exposed to temperature changes and humidity changes. Therefore, it is common to use a PET film that is resistant to such environmental changes for the material of the attention label. If it is a PET film, it has water resistance, so it is less likely to occur that its rigidity is impaired by moisture absorption and it bends, and it is easy for consumers to visually recognize.

[0005] Secondly, it is preferable that the attention label affixed to the bottle is one that is difficult to peel off. Bottles to which attention labels are affixed are often cylindrical, with a curved surface. If a bottle is stored in a warming device for a long time, the affixed portion of the label may float or peel off from the bottle surface due to the influence of humidity and the rigidity of the label itself, making it difficult to visually recognize the printed information such as letters and designs. For this reason, measures are taken to prevent the affixed portion from floating or peeling off.

[0006] Furthermore, in recent years, there has been a global demand for efforts to eliminate the use of plastic from the perspective of environmental protection, and there is an increasing demand for label sheets made from carbon-neutral materials rather than petroleum-derived plastic films (see Patent Document 1 below). [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Utility model registration No. 3224662 Summary of the Invention [Problem to be solved by the invention]

[0008] However, the label disclosed in the above-mentioned Patent Document 1 is a printed label used mainly for packaging materials, containers, etc. in the field of beverage and food containers, and does not take into consideration attention labels that are attached to products via adhesive areas. When paper pulp is used as the base paper for attention labels, problems occur such as the label deforming due to temperature and humidity changes and bending under its own weight, or the adhesion between the label and the bottle is not maintained, causing the attached part to lift off. The above problems are particularly noticeable in attention labels that are attached to the cylindrical surface of a bottle having a cylindrical surface.

[0009] Therefore, the main object of the present invention is to provide an attention label that uses wood pulp as a raw material for the base paper, is less likely to bend due to its own weight in response to temperature and humidity changes in the surroundings, and has a sticking portion that is less likely to peel off.

Means for Solving the Problems

[0010] The following aspects are listed as means for solving the above problems. (First Aspect) An attention label that is attached to a curved surface formed by bending a flat member so as to stand in the axial direction on the curved surface of the adherend, a base paper containing a sizing agent, a wet paper strength enhancer, and a dry paper strength enhancer, having an adhesive area and a non-adhesive area on one side of the base paper, and having an information display area on the other side of the base paper, the adhesive area extends in a direction perpendicular to the standing direction at one end on the standing direction side of the base paper, the adhesive area has an adhesive layer containing an acrylic adhesive, the Clark stiffness in the standing direction of the base paper is 100 cm 3 / 100 to 280 cm 3 / 100, and the Clark stiffness in the direction perpendicular to the standing direction of the base paper is 100 cm 3 / 100 to 280 cm 3 / 100, the base paper contains wood pulp as a raw material, characterized by an attention label.

[0011] The attention label of the above aspect is provided with an adhesive layer containing an acrylic adhesive, so that the adhesive strength is less likely to decrease even at relatively high temperatures and high humidities, and the adhered state lasts for a long time. Also, since the Clark stiffness in the standing direction and the direction perpendicular to the standing direction of the base paper are each within the above range, the standing state is maintained, the label is less likely to bend due to its own weight, and the sticking portion is less likely to peel off.

[0012] Each of the above Clark stiffness ranges is an important factor. If the Clark stiffness in the direction orthogonal to the standing direction is too high, the label becomes rigid and difficult to bend, resulting in problems such as peeling or floating of the sticking part. On the other hand, if the Clark stiffness in the standing direction is too low, the attention label stuck to the adherend bends under its own weight, making it difficult to see the information described in the information display area.

[0013] In addition, since the base paper contains wood as a raw material, it is an article that takes into account the global environment. Furthermore, the attention label can be preferably stuck and used on commodity containers in the plumbing area within the home, containers for chilled or insulated drinking water, etc.

[0014] In addition to the above aspects, desirable aspects are listed below. (Second Aspect) An attention label that is stuck to a curved surface of an adherend formed by bending a flat member so as to stand in the axial direction, a base paper added with a sizing agent, a wet paper strength enhancer, and a dry paper strength enhancer, having an adhesive area and a non-adhesive area on one surface of the base paper, and having an information display area on the other surface of the base paper, the adhesive area extends in a direction orthogonal to the standing direction at one end on the standing direction side of the base paper, the Clark stiffness of the base paper in the standing direction is 100 cm 3 / 100 to 280 cm 3 / 100, and the Clark stiffness of the base paper in the direction orthogonal to the standing direction is 100 cm 3 / 100 to 280 cm 3 / 100, the reduction rate of the adhesive force obtained by the following formula (1) in the adhesive area is 15% or less, the base paper contains wood pulp as a raw material, characterized by an attention label. (Reduction rate of adhesive force (%)) = {(Adhesive force under the condition of 23°C and 50% RH) - (Adhesive force under the condition of 40°C and 80% RH)} / (Adhesive force under the condition of 23°C and 50% RH) × 100 ··· Formula (1)

[0015] (Third aspect) It has a surface coating layer with a sizing agent externally added to at least one surface of the base paper. The attention label of the first aspect or the second aspect.

[0016] (Fourth aspect) The area of the adhesive region is 5% - 90% of one surface of the base paper. The attention label of the first aspect or the second aspect.

[0017] (Fifth aspect) The non - adhesive region is provided with an anti - tack agent. The attention label of the first aspect or the second aspect.

[0018] (Sixth aspect) It can be adhered to a part where the radius of curvature of the curved surface of the object to be adhered is 5 mm - 50 mm. The attention label of the first aspect or the second aspect.

Advantages of the Invention

[0019] According to the above aspects, an attention label is provided which uses wood pulp as the raw material of the base paper, is less likely to bend due to its own weight with respect to temperature changes and humidity changes in the surroundings, and has an adhesive part that is less likely to peel off.

Brief Description of the Drawings

[0020]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Mode for Carrying Out the Invention

[0021] Next, embodiments of the present invention will be described in detail with reference to the drawings.

[0022] The attention label 1 according to the present invention is an attention label that is adhered to the curved surface of an adherend 30 having a curved surface formed by bending a flat member so as to stand in the axial direction SH. The attention label 1 includes a base paper 10 added with a sizing agent, a wet paper strength enhancer, and a dry paper strength enhancer. One surface of the base paper 10 has an adhesive area 11 and a non-adhesive area 12, and the other surface of the base paper 10 has an information display area 13. The adhesive area 11 extends in the direction CD orthogonal to the standing direction at one end on the standing direction SD side of the base paper 10. The adhesive area 11 has an adhesive layer 11A containing an acrylic adhesive. The Clark stiffness in the standing direction SD is 100 cm 3 / 100 to 280 cm 3 / 100, and the Clark stiffness in the direction CD orthogonal to the standing direction is 100 cm 3 / 100 to 280 cm 3It is 100 / cm, and the base paper 10 contains wood pulp as a raw material, which is characterized. Further, the attention label 1 according to the present invention is an attention label 1 that is attached to the curved surface of an adherend 30 having a curved surface formed by bending a flat member so as to stand in the axial direction SH. The base paper 10 contains a sizing agent, a wet paper strength enhancer, and a dry paper strength enhancer. One surface of the base paper 10 has an adhesive area 11 and a non-adhesive area 12, and the other surface of the base paper 10 has an information display area 13. The adhesive area 11 extends in a direction CD orthogonal to the standing direction at one end on the standing direction SD side of the base paper 10, and the Clark stiffness in the standing direction SD is 100 cm 3 / 100 to 280 cm 3 / 100, and the Clark stiffness in the direction CD orthogonal to the standing direction is 100 cm 3 / 100 to 280 cm 3 / 100, the base paper 10 contains wood pulp as a raw material, and the reduction rate of the adhesive force in the adhesive area is 15% or less, which is characterized.

[0023] The shape of the attention label 1 of the present invention can be, for example, a square (quadrilateral, trapezoid, parallelogram, etc.), but it is not limited to this. Also, it can be a shape cut along various designs.

[0024] When the shape of the attention label 1 is, for example, rectangular in plan view, the ends are the upper side, the lower side, and two side ends (in plan view, the left side end (the first side end) and the right side end (the second side end)). The adhesive area 11 may be provided to extend along the lower side with a predetermined width from the left side end to the right side end. When the adhesive area 11 is provided at the lower side portion of the attention label 1, the direction from the lower end to the upper end (or from the upper end to the lower end) in the attention label 1 is referred to as the standing direction SD, and the direction from the first side end to the second side end (or from the second side end to the first side end) in the attention label 1 is referred to as the direction CD orthogonal to the standing direction. When attaching the attention label 1 to the adherend 30, if the extending direction of the adhesive area 11 is made to coincide with the circumferential direction on the curved surface of the adherend 30 for attachment, the attention label 1 will stand neatly in the axial direction SH of the adherend 30. When attaching the attention label 1 to the adherend 30, it is preferable that the upper end of the attention label 1 protrudes upward from the upper end in the axial direction SH of the adherend 30 so that the information display area 13 appears to pop out. Note that the upper end in the axial direction SH of the adherend 30 is the upper edge when the adherend 30 is made to stand in the axial direction SH. On the other hand, the lower end in the axial direction SH of the adherend 30 is the lower edge when the adherend 30 is made to stand in the axial direction SH.

[0025] The standing direction SD in the base paper 10 coincides with the axial direction SH in the adherend 30. On the other hand, the direction CD orthogonal to the standing direction in the base paper 10 coincides with the circumferential direction on the curved surface of the adherend 30.

[0026] (Base paper) The base paper 10 according to the present invention can be used as a raw material alone or in combination of, for example, wood pulp made from hardwoods, softwoods, etc., non-wood pulp made from straw, bagasse, etc., waste paper pulp (DIP) made from recycled waste paper, waste paper, etc. Among these types of pulp, wood pulp is preferable as the raw material for the base paper 10 according to the present invention.

[0027] As the wood pulp, for example, chemical pulps such as hardwood kraft pulp (LKP), softwood kraft pulp (NKP), etc., mechanical pulp (TMP), wastepaper pulp, etc. can be used. These pulps can be used alone or in combination.

[0028] The hardwood kraft pulp (LKP) may be hardwood bleached kraft pulp, hardwood unbleached kraft pulp, or hardwood semi-bleached kraft pulp. The softwood kraft pulp (NKP) may be softwood bleached kraft pulp, softwood unbleached kraft pulp, or softwood semi-bleached kraft pulp. In particular, softwood kraft pulp, which is a wood pulp with relatively high Clark stiffness when used as the base paper, is preferred.

[0029] As the mechanical pulp, for example, one or more can be selected and used from stone ground pulp (SGP), pressurized stone ground pulp (PGW), refiner ground pulp (RGP), chemiground pulp (CGP), thermoground pulp (TGP), ground pulp (GP), thermomechanical pulp (TMP), chemithermomechanical pulp (CTMP), refiner mechanical pulp (RMP), bleached thermomechanical pulp (BTMP), etc.

[0030] The wastepaper pulp (DIP) may be magazine wastepaper pulp (MDIP), newspaper wastepaper pulp (NDIP), office wastepaper pulp (WP), or other wastepaper pulp.

[0031] The proportion of the wood pulp in the base paper 10 is preferably 90% by mass or more, more preferably 95% by mass or more, and optimally 100% by mass.

[0032] The thickness of the base paper 10 can be selected within a range that does not impair the handleability and workability as the attention label 1, but generally it is about 100 μm to 180 μm. Considering the excellent standing property, the thickness of the base paper 10 in the present invention is preferably 110 μm to 160 μm, particularly preferably 110 μm to 115 μm.

[0033] Also, the ash content of the base paper 10 is preferably 0.01% by mass or more, more preferably 0.1% by mass or more and 3.0% by mass or less. The density is desirably 0.80 to 0.95. Such paper is suitable in terms of workability during production and workability in actual use using a labeler or the like.

[0034] Various additives, such as fillers, dry paper strength enhancers, sizing agents, wet paper strength enhancers, fixing agents, pH adjusters, and other chemicals, can be added to the pulp slurry obtained after beating the pulp (hereinafter sometimes referred to as "pulp furnish").

[0035] In particular, it is preferable that the base paper 10 according to the present invention has excellent paper strength when a sizing agent, a dry paper strength enhancer, and a wet paper strength enhancer are internally added.

[0036] Examples of the filler include calcium carbonate, clay, kaolin, white clay, talc, titanium oxide, diatomaceous earth, barium sulfate, aluminum hydroxide, magnesium hydroxide, and the like.

[0037] (Internally added sizing agent) Examples of the sizing agent that can be internally added to the base paper 10 include fatty acid salts, rosin, rosin derivatives such as maleated rosin, paraffin wax, alkyl ketene dimer, compounds containing higher fatty acids such as alkenyl succinic anhydride (ASA), and epoxidized fatty acid amides. The content (solid content) of the sizing agent in the base paper 10 is preferably 0.50 to 2.5% by mass, more preferably 0.80 to 2.3% by mass, and even more preferably 1.0 to 2.0% by mass. By having the above content, improvement in water resistance can be achieved.

[0038] Examples of the dry paper strength enhancer include cationized starch, cationized polyacrylamide, anionic polyacrylamide, amphoteric polyacrylamide, carboxy-modified polyvinyl alcohol, and the like. By including the dry paper strength enhancer in the base paper 10, the attention label 1 has excellent strength and preferably maintains the state (i.e., the standing state) during pasting. The content (solid content) of the dry paper strength enhancer in the base paper 10 is preferably 0.20 to 0.80% by mass, more preferably 0.25 to 0.70% by mass, and still more preferably 0.30 to 0.60% by mass.

[0039] Examples of the wet paper strength enhancer include epichlorohydrin-based resins such as polyamide-epichlorohydrin resin, polyamine resin, melamine resin, acid colloid-melamine resin, urea resin, epoxidized polyamide resin, and the like. By including the wet paper strength enhancer in the base paper 10, it is preferable that the attached attention label 1 is less likely to be distorted or torn in a high humidity or wet environment, and is less likely to bend under its own weight, so that the display in the information display area is not difficult to see. The content (solid content) of the wet paper strength enhancer in the base paper 10 is preferably 0.30 to 0.80% by mass, more preferably 0.35 to 0.75% by mass, and still more preferably 0.40 to 0.70% by mass.

[0040] Examples of the fixing agent include polyvalent metal salts such as aluminum sulfate and aluminum chloride, and cationic polymers such as cationized starch.

[0041] Examples of the pH adjuster include caustic soda, sodium carbonate, and the like.

[0042] Examples of the other agents include defoamers, dyes, slime control agents, fluorescent brighteners, and the like.

[0043] The base paper 10 preferably has a surface coating layer containing a water-soluble polymer and an external sizing agent on at least one surface.

[0044] (Water-soluble polymer) Water-soluble polymers can use polyvinyl alcohol and starch. As polyvinyl alcohol, various modified polyvinyl alcohols can also be used. As starch, for example, enzyme-decomposed starch, oxidized starch, hydroxyethylated starch, cationized starch, urea phosphorylated starch, modified oxidized starch obtained by modifying raw starch such as corn, wheat, tapioca, and potato by various production methods can be mentioned. Among them, from the viewpoint of making it less susceptible to the influence of temperature and humidity, it is preferable to use polyvinyl alcohol and starch in combination. The coating amount (solid content) of the surface coating layer is 1.0 g / m 2 or more and 3.0 g / m 2 or less. By being the said coating amount, it becomes difficult to be influenced by temperature and humidity.

[0045] (External sizing agent) Examples of the external sizing agent include fatty acid salts, rosin, rosin derivatives such as maleated rosin, paraffin wax, alkyl ketene dimer, compounds containing higher fatty acids such as alkenyl succinic anhydride (ASA), and epoxidized fatty acid amide. The coating amount (solid content) of the external sizing agent in the surface coating layer is 0.1 g / m 2 or more and 0.6 g / m 2 or less. By being the said coating amount, it becomes difficult to be influenced by temperature and humidity.

[0046] In order to provide the adhesive in layers on one surface of the base paper 10, it can be carried out by known coating methods and coating methods similar to printing and printing. The adhesive layer 11A forming the adhesive region 11 may be a layer in which the adhesive is applied thickly to the base paper, or may be one in which the adhesive is provided in a dot pattern or a grid pattern.

[0047] (Adhesive) The adhesive used for the adhesive layer 11A of the present invention can be variously selected according to the application. However, since the conventionally widely used organic solvent-soluble adhesives have problems in environmental hygiene associated with the use of organic solvents, it is preferable to use an aqueous dispersion-type adhesive. On the other hand, it is extremely difficult to well balance the three elements of adhesive strength (peel resistance from the adherend), tack (instantaneous wetting to the adherend), and cohesive force (creep resistance) required for the performance of the adhesive, and to make the water resistance good with an aqueous dispersion-type adhesive. Therefore, it is necessary to select a water-dispersion-type acrylic adhesive composition that excellently balances excellent adhesive strength, tack, excellent cohesive force, and excellent water resistance for the adhesive as well.

[0048] Examples of the adhesive include pressure-sensitive adhesives such as acrylic adhesives, rubber adhesives, and silicone adhesives. Preferred adhesives include, for example, acrylic acid alkyl esters such as ethyl acrylate, butyl acrylate, and 2-ethylhexyl acrylate (for example, C2-10 alkyl acrylate), and methacrylic acid alkyl esters such as butyl methacrylate and 2-ethylhexyl methacrylate (for example, C4-12 alkyl methacrylate) as the main monomer components, and copolymerizable monomer components such as methyl acrylate, methyl methacrylate, and vinyl acetate, and polar group-containing monomer components such as carboxyl group-containing monomers such as acrylic acid, methacrylic acid, and maleic acid, and hydroxyl group-containing monomers such as 2-hydroxyethyl (meth)acrylate. An acrylic adhesive (particularly, a water-soluble acrylic adhesive) containing a copolymer obtained by copolymerizing these as a base polymer is included.

[0049] Particularly, the following aqueous dispersion type acrylic pressure-sensitive adhesive composition is suitable. The pressure-sensitive adhesive composition contains an aqueous dispersion of an acrylic copolymer obtained by copolymerizing the following component A (40 to 99.8% by mass), component B (0.001 to 0.1% by mass), component C (0 to 5% by mass), component D (0 to 5% by mass) and component E (0 to 60% by mass). The glass transition point of the acrylic copolymer is -20°C or lower, the gel content is 40% by mass or more, and the average particle diameter of the acrylic copolymer dispersed in the aqueous dispersion is 0.3 μm or less. The total mass percentages of components A to E are formulated to be 100% by mass.

[0050] Component A is an acrylate ester represented by the following general formula (1), and the glass transition point of its homopolymer is -20°C or lower. CH 2 =CH-COOR 1 ···(1) In the above general formula (1), R 1 is a linear or branched alkyl group having 2 to 12 carbon atoms. Component B is a silicon-containing monomer represented by the following general formula (2).

Chemical formula

[0051] The thickness of the adhesive layer 11A is preferably 5 μm to 50 μm, more preferably 15 μm to 35 μm. When the thickness of the adhesive layer 11A is within the above range, excellent adhesiveness to the adherend 30 is exhibited, and since the thickness is appropriate, the adhesive is less likely to remain on the adherend 30 when the attention label 1 is peeled off from the adherend 30.

[0052] The Clark stiffness in the standing direction SD of the base paper 10 is preferably 100 cm 3 / 100 to 280 cm 3 / 100, more preferably 150 cm 3 / 100 to 280 cm 3 / 100, even more preferably 190 cm 3 / 100 to 280 cm 3 / 100. Also, the Clark stiffness in the direction CD orthogonal to the standing direction of the base paper 10 is preferably 100 cm 3 / 100 to 280 cm 3 / 100, more preferably 120 cm 3 / 100 to 250 cm 3 / 100, even more preferably 140 cm 3 / 100 to 200 cm 3 / 100. If the Clark stiffness in the standing direction SD and the Clark stiffness in the direction CD orthogonal to the standing direction of the base paper 10 are within the above ranges, the attention label 1 attached to the adherend 30 will maintain a more upright state for a longer time, and the peeling of the adhesive region 11 is less likely to occur.

[0053] (Release paper) Before the exposed surface of the adhesion area 11 of the attention label 1 is actually adhered to the adherend 30, it is advisable to cover it with release paper 20 to prevent accidental adhesion or adhesion of dust, etc. The release paper 20 may be, for example, paper such as ordinary paper, a plastic film, or a multi-layer film that has been subjected to a surface treatment (such as coating with a release agent) to impart releasability as necessary. The thickness of the release paper 20 can be appropriately selected within a range that does not impair workability, etc., but generally it is about 10 μm to 300 μm, preferably about 15 μm to 250 μm. However, it is desirable that it is ordinary paper that is easy to recycle as waste paper during manufacturing or waste paper after use.

[0054] (Adherend) The adherend 30 to which the attention label 1 according to the present invention is adhered is not particularly limited, and examples thereof include cylindrical containers, cylindrical toys, box-shaped containers, box-shaped toys, circular containers, circular toys, flat containers, flat toys, etc. Further, the adherend 30 is not limited to those having a hollow interior, and also includes those having a solid interior such as a round bar (cylindrical bar). Furthermore, the adherend 30 having a cylindrical surface is not limited to those that are entirely cylindrical, and it is sufficient that the portion to which the attention label 1 is adhered is a cylindrical surface, and those having unevenness in portions other than the adhered portion may be included.

[0055] The cylindrical surface of the adherend 30 refers to the outer surface of the cylinder, and the peripheral shape of the cross-section of the cylinder may be a substantially circle, a substantially ellipse, the outer peripheral shape of a oval gold coin, a rounded polygon, etc. (for example, a rounded square, a rounded pentagon, etc.), but is not limited to these shapes.

[0056] Examples of the material of the adherend 30 include resins such as polyethylene resin, polypropylene resin, polyethylene terephthalate resin, metals such as stainless steel, iron, aluminum, tinplate, and paper made from pulp as a raw material.

[0057] The adherend 30 has a curved surface formed by bending a flat member, either in whole or in part. The curved surface may be the side surface of a cylinder or the outer surface (cylindrical surface) of the surface forming the cylinder.

[0058] The attention label 1 can be attached to a portion (i.e., the adherend portion) where the radius of curvature (or radius) of the curved surface of the adherend 30 is preferably 5 mm to 50 mm, more preferably 8 mm to 30 mm, and even more preferably 10 mm to 25 mm. Within this range of the radius of curvature (or radius), the standing state of the attached attention label 1 is maintained for a long time, and the effect that the adhesion area 11 of the attention label 1 is less likely to peel off is more prominent.

[0059] In addition, the attention label 1 of the present invention is not limited to the adherend 30 having a curved surface formed by bending a flat member, either in whole or in part, but can also be attached to a prismatic adherend 31 as shown in FIG. 5.

[0060] (Attention Label) The shape and size of the attention label 1 according to the present invention are not particularly limited and can be appropriately designed according to the shape and size of the product or the like that is the adherend 30. Generally, it is about 0.5 cm 2 ~100 cm 2 and the attention label 1 according to the present invention includes at least this range.

[0061] The range of the adhesion area 11 of the attention label 1 according to the present invention is 5% to 90%, more preferably 10% to 80% of one surface of the attention label 1. By setting this range, the state where the attention label 1 is attached to the adherend 30 continues for a long time, and it has even better standing properties.

[0062] The non-adhesive area 12 according to the present invention is an area that does not adhere to the adherend 30 such as a product when the attention label 1 is attached to the adherend 30. The specific area of the non-adhesive area 12 depends on the total area of the attention label 1. It is desirable that on one side of the attention label 1, all parts other than the adhesive area 11 are the non-adhesive area 12.

[0063] The information display area 13 is an area where any information that can be visually recognized from the outside, etc., can be displayed or is displayable when attached to the adherend 30 such as a product. The information display area 13 may be the entire other side of the base paper 10, or may be an area facing the non-adhesive area on one side of the other side (that is, the back surface part of the non-adhesive area 12). In particular, when the attention label 1 is attached to a curved surface part having unevenness of the adherend 30, since the area facing the adhesive area 11 on one side of the other side is distorted by the unevenness, it is preferable that the area other than the said area on the other side is the information display area 13. The specific information to be displayed in the information display area 13 is not particularly limited. For example, it is information such as the characteristics of the product that becomes the adherend 30, the release date, various campaigns, and price reduction displays.

[0064] Also, the reduction rate obtained by the following formula (1) in the adhesive strength of the attention label 1 is 15.0% or less, preferably 1.0% to 15.0%, more preferably 2.0% to 13.0%, and still more preferably 3.0% to 10.0%. If the reduction rate is within the above range, it becomes a preferable attention label in which the adhered part is not easily peeled off with respect to changes in the surrounding temperature and humidity. [Formula for the reduction rate of adhesive strength] (Reduction rate of adhesive strength (%)) = {(Adhesive strength under the condition of 23°C and 50% RH) - (Adhesive strength under the condition of 40°C and 80% RH)} / (Adhesive strength under the condition of 23°C and 50% RH) × 100 ··· Formula (1)

[0065] The above adhesive strength was measured in accordance with the test method specified in JIS-Z-0237(2022), and is the value when the measurement conditions are as follows. Peel: 180° peel (peel speed 300 mm / min) Adherend: Polyethylene (PE), Polypropylene (PP), Polyethylene terephthalate (PET), SUS304 Temperature: 23°C or 40°C Humidity: 50%RH or 80%RH

[0066] The above adhesive strength is the value when the adherend is polyethylene terephthalate in the test method specified in JIS-Z-0237(2022). However, it has been confirmed that even when the adherend is other resins or stainless steel, the same tendency is obtained.

[0067] On the other hand, the following are also preferable as other embodiments of the attention label 1. Referring to FIGS. 6 and 7, the attention label 1 of the other embodiment has an adhesive area 11 and a non-adhesive area 12 on one side of the base paper 10, and has an information display area 13 on the other side of the base paper 10. The non-adhesive area 12 is provided with an anti-tack agent. In this embodiment, for example, an adhesive layer 11A is provided over the entire one side, and an anti-tack agent 14 is applied to a part of the area to form the non-adhesive area 12. The non-adhesive area 12 to which the anti-tack agent 14 is applied can be such that the adhesive strength is lower than that of the adhesive area 11 and it peels off immediately even when attached to the adherend 30, or the adhesive strength is completely eliminated. Also, on the surface where the information display area 13 is provided, a coating layer corresponding to various display methods such as offset printing, flexographic printing, gravure printing, inkjet printing, ultraviolet laser printing, sublimation transfer, melt transfer, and thermal recording can be provided.

[0068] The anti-tack agent 14 is not particularly limited as long as it reduces the adhesive strength of the adhesive layer 11A. For example, silicone, long-chain alkyl polymer, polyolefin, alkyd resin, fluorine compound, inorganic pigment, etc. can be used. In particular, inorganic pigments are preferable because they have a relatively small impact on the natural environment.

Examples

[0069] The base paper used in the example of the attention label according to the present invention was manufactured as follows. Seven types of base papers (base paper A, base paper B, ···, base paper G) were manufactured, and the basis weight, paper thickness, Clark stiffness (SD direction), and Clark stiffness (CD direction) of each base paper were measured. The results are shown in Table 1. Here, the SD direction refers to the standing direction of the attention label attached to the adherend, and the CD direction refers to the direction orthogonal to the standing direction. Note that the attention label according to the present invention is not limited to the examples.

[0070] (Manufacturing example of base paper A) 50 parts by mass of softwood bleached kraft pulp (NBKP) and 50 parts by mass of hardwood bleached kraft pulp (LBKP) were mixed to prepare a pulp slurry. Sizing agent, wet paper strength enhancer, and dry paper strength enhancer were added as additives to this pulp slurry, and in addition, sulfuric acid band and retention agent generally added in the preparation process were added. The obtained pulp slurry was made into a base paper by papermaking using an on-top type fourdrinier machine. Further, a sizing press coating liquid containing an oil-resistant agent was applied to both sides of the obtained base paper by sizing press so that the solid content adhesion amounts of oxidized starch and polyvinyl alcohol were 2.0 g / m 2 (Oxidized starch 1.5 g / m 2 : Polyvinyl alcohol 0.5 g / m 2 ) and the surface sizing agent was 0.3 g / m 2 to obtain base paper A.

[0071] (Manufacturing example of base paper B) The same manufacturing method as that of base paper A was performed to obtain base paper B with a basis weight of 100 g / m 2 .

[0072] (Manufacturing example of base paper C) 20 parts by mass of softwood kraft pulp (NBKP) and 80 parts by mass of hardwood kraft pulp (LBKP) were mixed to prepare a pulp slurry. Additives, alum, retention aid, and sizing agent were added to this pulp slurry respectively. The obtained pulp slurry was formed into a base paper using an on-top type Fourdrinier paper machine. Thereafter, a pigment coating layer was provided on one side of the obtained base paper and processed using a casting drum to obtain a base paper C for cast-coated paper.

[0073] (Manufacturing Example of Base Paper D) 20 parts by mass of softwood kraft pulp (NBKP) and 80 parts by mass of hardwood kraft pulp (LBKP) were mixed to prepare a pulp slurry. A dry paper strength enhancer was added as an additive to this pulp slurry, and in addition, alum, retention aid, and sizing agent were added. The obtained pulp slurry was formed into a base paper using an on-top type Fourdrinier paper machine. Thereafter, pigment coating layers were provided on both sides of the obtained base paper to obtain a base paper D for coated paper.

[0074] (Manufacturing Example of Base Paper E) 20 parts by mass of softwood kraft pulp (NBKP) and 80 parts by mass of hardwood kraft pulp (LBKP) were mixed to prepare a pulp slurry. Additives, alum, retention aid, and sizing agent were added to this pulp slurry respectively. The obtained pulp slurry was formed into a base paper using an on-top type Fourdrinier paper machine. Thereafter, starch coating layers were provided on both sides of the obtained base paper to obtain a base paper E for fine paper.

[0075] (Manufacturing Examples of Base Paper F and Base Paper G) As the base paper F, a commercially available synthetic paper (manufactured by Daio Paper Corporation: NS80) was used, and as the base paper G, a commercially available synthetic paper (Upo Corporation 80) was used.

[0076] An adhesive was applied to each of the manufactured base papers to produce attention labels (Examples 1 to 3 and Comparative Examples 1 to 6). The applied portion was defined as the adhesive area. The thickness of the adhesive (coating thickness) is shown in Table 2. As the adhesive, either "S-2156V" manufactured by Nippon Carbide Industries Co., Ltd. as Adhesive A or "AT-1230" manufactured by Saiden Chemical Co., Ltd. as Adhesive B was used.

[0077]

Table 1

[0078] (Others) The basis weight was measured in accordance with JIS-P-8124 (2011) "Paper and Paperboard - Method for Measuring Basis Weight". The basis weight was 90 g / m 2 to 130 g / m 2 or less. By doing so, it is possible to increase the rigidity of the attention label while reducing the weight. The paper thickness was measured in accordance with the "Paper and Paperboard - Test Methods for Thickness and Density" described in JIS-P8118 (2014).

[0079] (Curved Surface Resilience Test) The following procedure was performed for the manufactured attention label in a curved surface repulsion test. An adherend having a curved surface was prepared. The prepared adherend was a test bar (straight round bar) with a diameter of 40 mm, which was a polyethylene (PE) round bar, a polypropylene (PP) round bar, and a polyethylene terephthalate (PET) round bar. The attention label was adjusted to a test piece with a standing direction of 20 mm × a direction orthogonal to the standing direction of 62.8 mm (equivalent to 1 / 2 of the circumferential distance of the test bar). The adhesive region extending in the direction orthogonal to the standing direction in the attention label was wound and adhered along the circumferential direction of the curved surface of the test bar. Then, the adhesive region adhered to the test bar was gently traced with a finger from the other surface of the attention label and pressed against the test bar. Thereafter, the test bar with the attention label adhered was placed on a bundle of 20 sheets of No. 1 gauze placed on a test stand, and the test bar and the bundle of No. 1 gauze were covered with a bundle of 10 sheets of No. 2 gauze, and the test bar was sandwiched between the bundles of gauze. While pressing the test bar with the palm from above the bundle of No. 2 gauze, it was rotated back and forth 10 times to crimp the attention label to the test bar. The adhesive region was provided at one end on the standing direction side with a width of 13 mm in the direction orthogonal to the standing direction. That is, the entire surface adhering to the adherend was used as the adhesive region.

[0080] The test bar with the attention label crimped was allowed to stand still in an atmosphere of a predetermined room temperature and humidity. The test bar was observed 3 days and 14 days after standing still, and it was evaluated whether the adhesive region of the attention label floated and peeled off from the test bar. The evaluation criteria were as follows. The results were as shown in Table 2. No peeling was observed in the adhesive region: 〇 Peeling was observed in the adhesive region, and the length of the peeled portion in the direction orthogonal to the standing direction (circumferential direction of the test bar) was less than 2.0 mm: △ Peeling was observed in the adhesive region, and the length of the peeled portion in the direction orthogonal to the standing direction (circumferential direction of the test bar) was 2.0 mm or more: ×

[0081] In addition, the above-mentioned curved surface repulsion test was carried out in the same procedure under the atmosphere where the room temperature was 23°C and the humidity was 50%RH. For any of Examples 1 to 3 and Comparative Examples 2 to 6, it was confirmed that there was no peeling in the adhesion area. Also, the curved surface repulsion test was carried out in the same procedure under the atmosphere where the room temperature was -10°C. For any of Examples 1 to 3 and Comparative Examples 2 to 6, it was confirmed that there was no peeling in the adhesion area. When the attention label is adhered to the curved surface, the rigidity may increase due to the characteristics of the base paper in the bent state. Therefore, as a result of conducting the repulsion test by attaching it in a flat state without bending, it was confirmed that there was a similar tendency to the curved surface repulsion test.

[0082] (Uprightness Test 1) The uprightness test is a test conducted for the purpose of grasping to what extent the attention label adhered to the adherend bends due to its own weight. The uprightness test for the manufactured attention label was carried out in the following procedure. An adherend having a flat surface was prepared. The prepared adherend was a square glass flat plate, which was used as a test plate. The test plate has an upper end, a lower end, and two opposing side ends. The direction extending from the lower end to the upper end of the test plate is set to be parallel to the upright direction in the attention label. Also, the direction extending from one side end to the other side end of the test plate is set to be parallel to the direction orthogonal to the upright direction.

[0083] The attention label was adjusted to a test piece of 6.5 cm in the upright direction × 10 cm in the direction orthogonal to the upright direction. The adhesion area extending in the direction orthogonal to the upright direction in the attention label was adhered at the upper end of the test plate and along the direction extending from one side end to the other side end. The attention label was fixed to the test plate such that the adhesion area provided at one end on the upright direction side was adhered to the test plate, and the other end on the upright direction side protruded above the upper end of the test plate to become a free end. Then, the adhesion area adhered to the test plate was pressed against the test plate with a finger from the other side of the attention label, and the adhesion area of the attention label was crimped to the test plate. Incidentally, the adhesion area was provided at one end on the upright direction side to have a width of 10 mm in the direction orthogonal to the upright direction. That is, the area of the adhesion area was 15% of one side of the base paper.

[0084] The test plate with the attention label crimped was allowed to stand still in a state of being erected under an atmosphere of a predetermined room temperature and humidity. After standing still for 7 days, the test piece was observed, and the degree of deflection of the free end above the standing direction of the attention label was evaluated. The evaluation criteria were as follows. The results were as shown in Table 2. Note that the state of erecting the test plate means a state in which the lower end of the test plate is placed in contact with the test bench and the upper end of the test plate is erected so as to be vertically upward.

[0085] During the 7 days after standing still, the degree to which the two corners of the free end of the attention label were deflected in a direction perpendicular to the test plate was measured. The measurement method will be described with reference to FIG. 8. The straight-line distance L from the position 1p at the tip of the most deflected one of the two corners to the position 101p on the test plate plane 101 where the perpendicular dropped from the position 1p to the test plate plane 101 intersects the test plate plane 101 was measured. When the free end of the attention label 1 is deflected so as to be concave in the direction of the information display area 13 side (that is, the direction from the test plate to the test piece (attention label) (specifically, the direction toward the most deflected angle 1p of the two corners of the free end of the attention label 1 with respect to the test plate plane 101 in FIG. 8)), the straight-line distance L is referred to as a positive distance. Conversely, when the free end of the attention label is deflected so as to be concave in the direction of the non-adhesive area side (that is, the direction from the test piece (attention label) to the test plate), the straight-line distance L is referred to as a negative distance. The measurement and evaluation methods are as follows. Deflected to the negative distance side and the negative distance was 0 mm or more and 5 mm or less (including the case where there was no deflection at all): ◎ Deflected to the positive distance side and the positive distance was more than 0 mm and 5 mm or less: 〇 Deflected to the positive distance side and the positive distance was more than 5 mm and 15 mm or less: △ Deflected to the negative distance side and the negative distance was more than 5 mm, or deflected to the positive distance side and the positive distance was more than 15 mm: ×

[0086]

Table 2

[0087] (Orthostatic Test 2) In the orthostatic test 2, among the series of procedures of the orthostatic test 1, the adherend was changed to an adherend having a curved surface. The prepared adherend was a test bar (a straight round bar made of glass) with a diameter of 40 mm. The attention label was adjusted to a test piece of 6.5 cm in the standing direction × 10 cm in the direction orthogonal to the standing direction. The adhesive area extending in the direction orthogonal to the standing direction in the attention label was wound and adhered along the circumferential direction of the curved surface of the test bar. Then, the adhesive area adhered to the test bar was gently traced with a finger from the other side of the attention label and pressed against the test bar. Thereafter, the test bar with the attention label adhered was placed on a stack of 20 sheets of the first gauze placed on a test stand, and the test bar and the stack of the first gauze were covered with a stack of 10 sheets of the second gauze to sandwich the test bar with the gauze stacks. While pressing the test bar with the palm from above the stack of the second gauze, it was rotated back and forth 10 times to crimp the attention label to the test bar. Incidentally, the adhesive area was provided at one end on the standing direction side so as to have a width of 10 mm in the direction orthogonal to the standing direction. That is, the area of the adhesive area was 15% of one side of the base paper.

[0088] The test bar with the attention label crimped was allowed to stand still in a state of standing in an atmosphere of a predetermined room temperature and humidity. After standing still for 7 days, the test bar was observed, and the degree of deflection of the free end above the standing direction of the attention label was evaluated. The evaluation criteria were as follows. The results were as shown in Table 2.

[0089] During the 7 days after standing still, the degree to which the two corners at the free end above the attention label bent in the radial outward direction of the radius of the test bar was measured. The measurement method was to measure the straight-line distance (also referred to as the "positive distance") from the position of the tip of the most bent of the two corners to the position (point) on the curved surface where the straight line dropped from this position to the central axis of the test bar intersected the curved surface of the test bar. In addition, the two corners may bend in the direction of the central axis of the test bar. In this case, the straight-line distance (also referred to as the "negative distance") from the position of the tip of the most bent (in the direction of the central axis of the test bar) of the two corners to the position (point) on the curved surface where the straight line dropped from this position in the radial outward direction of the radius of the test bar intersected the curved surface of the test bar was measured. It bent to the negative distance side and the negative distance was 0 mm or more and 5 mm or less (including the case where it did not bend at all): ◎ It bent to the positive distance side and the positive distance was more than 0 mm and 5 mm or less: 〇 It bent to the positive distance side and the positive distance was more than 5 mm and 15 mm or less: △ It bent to the negative distance side and the negative distance was more than 5 mm, or it bent to the positive distance side and the positive distance was more than 15 mm: ×

[0090] As for the results of standing test 2, in Examples 1 to 3 and Comparative Examples 1 to 6, the evaluation was "◎" or "〇" even under the conditions of room temperature of 23°C and humidity of 50%RH, and even under the conditions of room temperature of 40°C and humidity of 80%RH.

[0091] From the results of standing test 2, it is presumed that the test pieces adhered to the prepared test bars were kept in a state of being adhered to the test bars during the 7 days after standing still, that is, in a shape concave in the direction of the central axis of the test bars, so the standing property was improved compared to standing test 1.

[0092] (Adhesion test) The adhesion of the adhesive regions of Examples 1 to 3 and Comparative Example 1 produced was measured. The adhesion was measured in accordance with the test method specified in JIS-Z-0237(2022). The measurement conditions are as follows. Peel: 180° peel (peel speed 300 mm / min) Adherend: Any of SUS304, PE, PP, and PET Width of test piece: 25 mm Laminating: The test piece attached to the adherend was laminated by passing it once back and forth with a 2 kg roller. After the test piece was laminated to the adherend and allowed to stand for 24 hours in an atmosphere of a predetermined room temperature and humidity, a tensile test was conducted. Here, the conditions of room temperature and humidity during standing were either 23°C 50% RH or 40°C 80% RH. The tensile test was conducted immediately after laminating the test piece.

[0093] The rate of decrease in adhesive strength was determined by the following formula. (Rate of decrease in adhesive strength (%)) = {Adhesive strength under 23°C 50% RH condition - Adhesive strength under 40°C 80% RH condition} / Adhesive strength under 23°C 50% RH condition × 100

[0094] The test results are shown in Table 3.

[0095]

Table 3

[0096] (Others) The Clark stiffness was measured in accordance with the provisions of JIS P 8143 (2009).

Explanation of symbols

[0097] 1…Attention label, 10…Base paper, 11…Adhesive area, 11A…Adhesive layer, 12…Non-adhesive area, 13…Information display area, 14…Anti-tack agent, 30, 31…Objects to be pasted, SD…Standing direction, CD…Direction perpendicular to the standing direction, SH…Axial direction of the object to be pasted

Claims

1. An attention label that is attached to a curved surface formed by bending a flat member so as to stand in the axial direction on the curved surface of the adherend having the curved surface, a base paper containing a sizing agent, a wet paper strength enhancer, and a dry paper strength enhancer, having an adhesive area and a non-adhesive area on one surface of the base paper, and having an information display area on the other surface of the base paper, the adhesive area extends in a direction perpendicular to the standing direction at one end on the standing direction side of the base paper, the adhesive area has an adhesive layer containing an acrylic adhesive, The Clark stiffness in the standing direction of the base paper is 100 cm ３ / 100 to 280 cm ３ / 100, and the Clark stiffness in the direction orthogonal to the standing direction of the base paper is 100 cm ３ / 100 to 280 cm ３ / 100, the base paper contains wood pulp as a raw material, characterized in that it is an attention label.

2. An attention label that is attached to a curved surface formed by bending a flat member so as to stand in the axial direction on the curved surface of the adherend having the curved surface, a base paper containing a sizing agent, a wet paper strength enhancer, and a dry paper strength enhancer, having an adhesive area and a non-adhesive area on one surface of the base paper, and having an information display area on the other surface of the base paper, the adhesive area extends in a direction perpendicular to the standing direction at one end on the standing direction side of the base paper, The Clark stiffness in the standing direction of the base paper is 100 cm ３ / 100 to 280 cm ３ / 100, and the Clark stiffness in the direction orthogonal to the standing direction of the base paper is 100 cm ３ / 100 to 280 cm ３ / 100, the rate of decrease in adhesive strength obtained by the following formula (1) in the adhesive area is 15% or less, the base paper contains wood pulp as a raw material, characterized in that it is an attention label. (Rate of decrease in adhesive strength (%)) = {(Adhesive strength under the conditions of 23°C and 50% RH) - (Adhesive strength under the conditions of 40°C and 80% RH)} / (Adhesive strength under the conditions of 23°C and 50% RH) × 100... Formula (1)

3. Comprising a surface coating layer to which a sizing agent is externally added to at least one surface of the base paper, The attention label according to claim 1 or claim 2.

4. The area of the adhesive area is 5% to 90% of one surface of the base paper, The attention label according to claim 1 or claim 2.

5. The non-adhesive area is provided with an anti-tack agent, The attention label according to claim 1 or claim 2.

6. It is possible to attach to a portion where the radius of curvature of the curved surface of the adherend is 5 mm to 50 mm, The attention label according to claim 1 or claim 2.

Images