JP2000177031A - Label and manufacture thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To weaken the tackiness of the fore edge surface of a pressure-sensitive adhesive layer and prevent the pressure-sensitive adhesive of the pressure-sensitive adhesive layer from being crowded out of the peripheral edge of a label base material to unpreparedly adhere to another object by forming a coated layer on the fore edge surface of the pressure- sensitive adhesive layer, in a label with the formed pressure-sensitive adhesive layer. SOLUTION: A pressure-sensitive adhesive layer 14 is formed on the second surface of each label base material 12 of a label web 10, and plural pieces of the label base material 12 are tack-bonded at a proper interval on the surface of a striplike release paper 16 by the tackiness of the pressure-sensitive adhesive layer 14. Near the fore edge 18a of the peripheral edge of the label base material 12, an ultraviolet-curable ink is applied and cured to form a coating layer 20, and at the same time, the coating layer 20 is likewise formed in succession on the fore edge 18b, on the peripheral edge, of the pressure-sensitive adhesive layer 14. Consequently, the fluidity on the first surface side of the fore edge 18b of the pressure-sensitive adhesive layer 14 is weakened and in turn, the tackiness of the first surface of the fore edge 18b of the pressure-sensitive adhesive layer 14 is lowered. Thus it is possible to prevent the pressure-sensitive adhesive of the pressure-sensitive adhesive layer 14 from being crowded out of the peripheral edge of the label base material 12 to unpreparedly adhere to another object.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a label and a method for manufacturing the same, and more particularly to a label which is printed on a thermal printer or attached to an object by air, and a method for manufacturing the same.

[0002]

2. Description of the Related Art A conventional label is configured as a label continuous body in which a label is temporarily attached to a surface of a release paper at a predetermined distance before the label is attached to an adherend. The printer is configured so that, for example, heat-sensitive coloring is performed by a printer in the state of the body, or the label is peeled off from the release paper and is attached to the object by air or the like.

[0003]

In the state of such a continuous label body, when a thermal color is developed by a thermal head using a printer, the adhesive is exposed at a small edge around the adhesive layer formed on the back surface of the label substrate. When the label substrate to be printed passes between the thermal head and the platen, the adhesive slightly pressed by them may protrude from the periphery of the label substrate and adhere to the thermal head. High in nature. If the adhesive adheres to the thermal head, the thermal conductivity of the thermal head deteriorates, which hinders thermosensitive coloring. Further, when attaching a label temporarily attached to a release paper to an object to be adhered, when the label is to be attached to the object to be attached while peeling the label from the release paper, as one method, the label detached from the release paper is used as one method. There is a method of once adsorbing on the suction plate and spraying it from the suction plate to the adhered object with air, for example, but if the adhesive sticks out from the peripheral edge of the label and sticks to the surface of the suction plate, air When the label is sprayed from the suction plate to the object to be adhered by spraying, the sticking position may be slightly disturbed. Therefore, a main object of the present invention is to provide a label and a manufacturing method for the label, in which the pressure-sensitive adhesive of a pressure-sensitive adhesive layer formed on the back surface of the label substrate does not protrude from the periphery of the label substrate and inadvertently adhere to other objects. Is to provide a way.

According to the present invention, in the label having the pressure-sensitive adhesive layer formed thereon, since the coating layer is formed on the fore-edge surface of the pressure-sensitive adhesive layer, the flow of the adhesive layer on the fore-edge surface side of the pressure-sensitive adhesive layer is caused by the coating layer. And the tackiness (adhesion) of the edge surface of the pressure-sensitive adhesive layer is weakened. According to the second aspect of the present invention, since the coating layer is formed by applying and curing an ultraviolet-curable ink, the adhesiveness (tackiness) of the edge surface of the pressure-sensitive adhesive layer is weakened by the coating layer made of the ultraviolet-curable ink. .

[0005]

According to a first aspect of the present invention, there is provided a label having a pressure-sensitive adhesive layer formed thereon, wherein the coating layer is formed on a fore-edge surface of the pressure-sensitive adhesive layer. The label according to claim 2 is the label according to claim 1, wherein the coating layer is formed by applying and curing an ultraviolet curable ink. The label according to claim 3, wherein the coating layer is formed over the entire edge of the peripheral edge of the label base material and the peripheral edge of the pressure-sensitive adhesive layer formed on the back surface of the label base material. It is a label. The label according to claim 4, wherein the coating layer is formed by applying and curing an ultraviolet curable ink over the entire periphery of the peripheral edge of the label substrate and the peripheral edge of the adhesive layer formed on the back surface of the label substrate. 1
A label according to any one of claims 1 to 3. A label manufacturing method according to claim 5, wherein a label base material preparing step of preparing a label base material having a pressure-sensitive adhesive layer formed on the back surface thereof, and a vicinity of a periphery of a portion of the main surface of the label base material where a label is to be die-cut. A printing / coating step of printing / coating the coating layer forming agent on the surface of the coating layer forming agent, and before the coating layer forming agent is cured, at the portion where the label die is to be cut, from the main surface side of the label base material with a die cutting tool. And a label stamping process for stamping the label in the thickness direction of the label substrate, and forming a coating layer printed and applied on the main surface of the label when the label stamping process is used to stamp the label. A coating layer forming step in which the agent flows from the edge of the label base of the die-cutting tool to the surface of the edge of the adhesive layer to form a coating layer, and a step of curing the coating layer formed in the coating layer forming step And a method for producing a label. The label manufacturing method according to claim 6, wherein the coating layer forming agent is an ultraviolet curable ink, and the step of curing the coating layer comprises curing the ultraviolet curable ink with an ultraviolet irradiation device. This is a label manufacturing method.
In a label manufacturing method according to a seventh aspect, in the coating layer forming step, the coating layer is formed over the entire edge of the peripheral edge of the label substrate and the peripheral edge of the pressure-sensitive adhesive layer formed on the back surface of the label substrate. Or a label manufacturing method according to claim 6. The label manufacturing method according to claim 8, wherein the label die-cutting tool is a die roll in which a blade corresponding to the shape of the label is formed on the surface of the roll-shaped main body. It is a method for producing the described label.

The above objects, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments of the present invention with reference to the drawings.

[0007]

FIG. 1 is a perspective view of a label according to an embodiment of the present invention, and FIG. 2 is a sectional view of the label shown in FIG.

In the continuous label body 10, an adhesive layer 14 is formed on the back surface of a flat rectangular label base material 12, and the label base material 12 is formed of a continuous strip-shaped release paper 16 by the adhesive force of the adhesive layer 14. A plurality of pieces are temporarily attached to the surface at appropriate intervals. A coating layer 20 formed by applying and curing an ultraviolet curable ink is formed in the vicinity of the small opening 18a on the periphery of the label base material 12, and the coating layer 20 is also formed on the small opening 18b on the periphery of the adhesive layer 14. Similar coating layers 20 are formed continuously.

The coating layer 20 is formed in a band shape having a constant width over the entire periphery near the periphery of the label base material 12, and is formed over the entire periphery of the small opening 18a on the periphery of the label base material 12, and is provided with an adhesive. It is formed over the entire periphery of the edge 18 b of the layer 14. Therefore, the flowability of the adhesive layer 14 on the surface side of the edge 18b is weakened by the coating layer 20, and the tackiness (adhesion) of the surface of the edge 18b of the adhesive layer 14 is weakened.

Next, a method of manufacturing the label continuous body 10 will be described mainly with reference to FIGS. First, the pressure-sensitive adhesive layer 14 is formed on the surface of a long strip-shaped release paper 16.
The base paper of the label continuous body 10 is prepared by laminating the label base paper 12A, which is the material of the label base 12 temporarily attached with the above, in the order of the label base paper 12A, the adhesive layer 14, and the release paper 16 from above. I do.

An ultraviolet curable ink, which is a coating layer forming agent 24, is printed and applied on the main surface of the label base material paper 12A and in the vicinity of the portion 22 to be cut out of the label. The following are suitable as the ultraviolet curable ink. Component name Content (%) Photosensitive resin 30-60 Photosensitive monomer 20-30 Photoinitiator 5-10 Extender pigment 20-30 Other additives 5-10

As the photosensitive monomer, there are the following photopolymerizable monomers. Examples of monofunctional ones include 2-ethylhexyl acrylate, 2-hydroxyethyl acrylate, 2-hydroxypropyl acrylate, 2-hydroxyethyl acryloyl phosphate, tetrahydrofurfuryl acrylate, and acrylates of tetrahydrofurfuryl derivatives. As bifunctional ones, dicyclopentenyl acrylate, dicyclopentenyloxyethyl acrylate, 1,3-butanediol diacrylate, 1,4-butanediol diacrylate, 1,6-hexanediol diacrylate, diethylene glycol diacrylate, Neopentyl glycol diacrylate, polyethylene glycol 400 diacrylate, hydroxypivalic acid ester neopentyl glycol diacrylate, tripropylene glycol diacrylate, 1,3-bis (3'-acryloxyethoxy-2'-hydroxypropyl)-
5,5-Dimethylhydantoin, diacrylate of hydroxypivalic acid ester neopentyl glycol derivative and the like. Examples of the trifunctional or higher functional groups include trimethylolpropane triacrylate, pentaerythritol triacrylate, dipentaerythritol hexaacrylate, and the like.

The acrylates include the following. Among them, general-purpose ones include acrylic acid, methyl acrylate, ethyl acrylate, n-butyl acrylate, 2-ethylhexyl acrylate, and the like. Monoacrylates include phenoxyethyl acrylate, isodecyl acrylate, n-hexyl acrylate, stearyl acrylate, lauryl acrylate, ethoxyethyl acrylate, methoxyethyl acrylate, N, N-diethylaminoethyl acrylate, N, N-dimethylaminoethyl acrylate , Carbowax 550 acrylate (trade name),
Tarditol 15S12 (trade name), glycidyl acrylate, allyl acrylate, 2-hydroxyethyl acrylate, 2-hydroxypropyl acrylate, 2
-Methoxyethoxyethyl acrylate, 2-ethoxyethoxyethyl acrylate, benzyl acrylate,
Cyclohexyl acrylate, dicyclopentenyl acrylate, N-vinyl pyrrolidone, 2-hydroxyethyl acryloyl phosphate, tetrahydrofurfuryl acrylate, dicyclopentadienyl acrylate, dicyclopentadiene ethoxy acrylate, acrylate of a tetrahydrofurfuryl derivative (TC- 1
10S). Examples of the diacrylate include 1,3-butanediol diacrylate, 1,4
-Butanediol diacrylate, 1,6-hexanediol diacrylate, polyethylene glycol 200
Diacrylate, polyethylene glycol 400 diacrylate, polyethylene glycol 600 diacrylate, diethylene glycol diacrylate, neopentyl glycol diacrylate, triethylene glycol diacrylate, tripropylene glycol diacrylate, hydroxypivalic acid ester neopentyl glycol diacrylate, trimethylolpropane Diacrylate, bis (acryloxyethoxy) bisphenol A, bis (acryloxyethoxy) tetrabromobisphenol A, bis (acryloxypolyethoxy) bisphenol A, 1,3-bis (hydroxyethyl) 5
5-dimethylhydantoin, 3-methylpentanediol diacrylate, diacrylate of hydroxypivalic acid ester neopentyl glycol derivative (HX-2
20). Examples of the triacrylate include trimethylolpropane triacrylate, pentaerythritol triacrylate, tris (2-hydroxyethyl) isocyanate, pentaerythritol tetraacrylate, dipentaerythritol hexaacrylate, dipentaerythritol monohydroxypentaacrylate, and the like.

Examples of photoinitiators include biacetyl, acetophenone, 2,2-diethoxyacetophenone, p-dimethylaminoacetophenone, p-dimethylaminopropiophenone, benzophenone, 2-chlorobenzophenone, pp'-dichlorobenzophenone, and pp '. -Bisdiethylaminobenzophenone, Michler's ketone, benzyl, benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether,
Benzoin n-propyl ether, benzoin isobutyl ether, benzoin n-butyl ether, benzyldimethyl ketal, tetramethylthiuram monosulfide, thioxanthone, 2-chlorothioxanthone,
-Methylthioxanthone, azobisisobutyronitrile, benzoin peroxide, di-tert-butyl peroxide, 1-hydroxycyclohexylphenyl ketone, 2-hydroxy-2-methyl-1-phenyl-1-one, 1- ( 4-isopropylphenyl) -2-
Hydroxy-2-methylpropan-1-one, methylbenzoylformate and the like.

Examples of the extender include kaolin and charcoal.

As the sensitizer, those of unsaturated polyester resins include n-butylamine, di-n-butylamine, tri-n-butylphosphine, allylthiourea,
Examples include s-benzylisothiuronium-p-toluenesulfinate, triethylamine, diethylaminoethyl methacrylate, and the like, and examples of polyester acrylates include triethylenetetramine.

The constitution of the UV curable ink is, for example, as follows. Examples of the prepolymer include pentaerythritol triacrylate, pentaerythritol tetraacrylate, dipentaerythritol hexaacrylate, polyol acrylate such as ditrimethylolpropane tetraacrylate, epoxidized drying oil acrylate, bisphenol A diglycidyl acrylate,
Urethanes such as epoxy acrylates such as modified bisphenol A epoxy acrylates, novolak type epoxy acrylates, aliphatic epoxy acrylates, polycarbonate acrylates, hydroxyl group-containing acrylates, and reaction products of diisocyanates with hydroxyl group-containing products (alkyds, drying oils, polyesters, etc.) Acrylates, polyester acrylates, alkyd acrylates, polyether acrylates are mentioned. Examples of monomers include hydroxybutyl acrylate, dicyclopentadiene acrylate, 1,6-hexanediol monoacrylate, monoacrylates such as cyclohexyl acrylate, 1,6-hexanediol diacrylate, neopentyl glycol diacrylate, triethylene glycol diacrylate, Examples include diacrylates such as ethylene glycol diacrylate, trimethylolpropane diacrylate, and tripropylene glycol diacrylate, and triacrylates such as trimethylolpropane triacrylate and pentaerythritol triacrylate.

The following are specific examples of ink preparation. [Example 1] Color pigment 25.0% (wt) Polyol acrylate 25.0% (PETA, PETeA) Epoxy acrylate 40.0% Mixed photoinitiator 6.5% Inhibitor 0.1% TMPTA 3.4% 100.0% in total

Example 2 Colored pigment 20.0% (wt) Polyol acrylate 15.0% Epoxidized soybean oil acrylate 30.0% Epoxy acrylate 20.0% Mixed photoinitiator 12.0% Inhibitor 0. 1% TMPTA 2.9% Total 100.0%

Example 3 Epoxy acrylate 35.25 parts by weight Urethane acrylate 11.75 parts by weight Trimethylolpropane triacrylate 25.00 parts by weight Vinyl acetate 5.00 parts by weight N-vinylpyrrolidone 15.00 parts by weight Benzoinethyl Ether 7.00 parts by weight Storage stabilizer 0.50 parts by weight Storage stabilizer 0.50 parts by weight

The UV-curable ink is preferably printed and applied on a printing plate such as a rotary letterpress or a flexographic method.

Next, before the coating layer forming agent 24 is hardened, the label is to be coated with a die roll as a die-cutting tool 26 from the main surface side (upper side) of the label base paper 12A in the die-cutting scheduled portion 22. The label is die-cut from the surface of the layer forming agent 24 in the thickness direction of the label base material paper 12A.

When the label is removed by the die removing tool 26 in the label removing step, the coating layer forming agent 24 printed and applied on the surface of the label base material paper 12A is applied to the label base material 12 after the release. The coating layer 20 is formed by the coating layer forming agent 24 by flowing over the entire surface of the edge 18a and also flowing over the entire surface of the edge 18b of the adhesive layer 14 of the label. Thus, the coating layer forming agent 24
Flows from the surface of the label substrate 12 over the entire peripheral surface of the edge of the label substrate 12 and the pressure-sensitive adhesive layer 14, and the coating layer 2
0 is formed.

At this time, the coating layer forming agent 24 has not been cured yet, and the coating layer forming agent 24 is cured by an ultraviolet irradiation device in a subsequent subsequent step, and the label base material 12 is cured.
The fluidity of the small opening 18a of the adhesive layer 18 and the small opening 18b of the adhesive layer 14 is weakened and hardened.

The die-cutting tool 26 is a die roll having a blade corresponding to the shape of the label formed on the surface of the roll-shaped main body, and reaches the surface of the release paper 16 from the surface of the label base material 12 but damages the release paper 16. It is formed so that the label can be cut to the extent that it is not necessary.

[0026]

According to the first aspect of the present invention, in the label having the pressure-sensitive adhesive layer formed thereon, the coating layer is formed on the fore-edge surface of the pressure-sensitive adhesive layer. Of the pressure-sensitive adhesive layer, the tackiness (adhesion) of the small surface of the pressure-sensitive adhesive layer is weakened, and the pressure-sensitive adhesive of the pressure-sensitive adhesive layer formed on the back surface of the label base material protrudes from the peripheral edge of the label base material to other objects. No inadvertent bonding. According to the invention according to claim 2, since the ultraviolet curable ink is applied and cured, the adhesive layer formed on the forefront surface of the adhesive layer by ultraviolet irradiation and formed on the back surface of the label substrate The pressure-sensitive adhesive of the layer does not protrude from the peripheral edge of the label base material and does not inadvertently adhere to other objects. According to the invention according to claim 3, since the covering layer is formed over the entire periphery of the periphery of the label base material and the periphery of the pressure-sensitive adhesive layer formed on the back surface of the label base material, the covering layer forms the fore-edge of the pressure-sensitive adhesive layer. The fluidity on the front side is weakened, the tackiness (adhesiveness) on the fore-edge surface of the adhesive layer is weakened, and the adhesive on the adhesive layer formed on the back of the label substrate protrudes from the periphery of the label substrate. Does not inadvertently adhere to objects. According to the invention according to claim 4, since the covering layer is formed on the entire periphery of the periphery of the label base material and the periphery of the pressure-sensitive adhesive layer formed on the back surface of the label base material, the covering layer forms a small area of the pressure-sensitive adhesive layer. The fluidity on the front side is weakened, the tackiness (adhesiveness) on the fore-edge surface of the adhesive layer is weakened, and the adhesive on the adhesive layer formed on the back of the label substrate protrudes from the periphery of the label substrate. Does not inadvertently adhere to objects. According to the invention according to claim 5, in the label on which the pressure-sensitive adhesive layer is formed, since the coating layer is formed on the fore-edge surface of the pressure-sensitive adhesive layer, the coating layer weakens the flowability of the pressure-sensitive adhesive layer on the fore-edge surface side. As a result, the tackiness (adhesion) of the small surface of the pressure-sensitive adhesive layer is weakened, and the pressure-sensitive adhesive of the pressure-sensitive adhesive layer formed on the back surface of the label base material protrudes from the periphery of the label base material and is inadvertently adhered to other objects. Labels without any problem can be produced efficiently. According to the invention according to claim 6, the coating layer forming agent is an ultraviolet-curable ink, and the step of curing the coating layer involves curing the ultraviolet-curable ink with an ultraviolet irradiation device. It is possible to efficiently produce a label in which the pressure-sensitive adhesive of the formed pressure-sensitive adhesive layer does not protrude from the peripheral edge of the label substrate and does not inadvertently adhere to other objects. According to the invention according to claim 7, the coating layer is formed on the entire edge of the periphery of the label base material and the peripheral edge of the pressure-sensitive adhesive layer formed on the back surface of the label base material. The fluidity on the front side is weakened, the tackiness (adhesiveness) on the fore-edge surface of the adhesive layer is weakened, and the adhesive on the adhesive layer formed on the back of the label substrate protrudes from the periphery of the label substrate. Labels that do not inadvertently adhere to objects can be efficiently produced. According to the invention according to claim 8, the label die-cutting tool is a die roll in which a blade corresponding to the shape of the label is formed on the surface of the roll-shaped main body. Can be formed.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a label according to an embodiment of the present invention.

FIG. 2 is an illustrative sectional view of the label shown in FIG. 1;

FIG. 3 is a schematic perspective view of a label continuum showing a label manufacturing method according to an embodiment of the present invention.

FIG. 4 is an illustrative sectional view showing a label cutting step of the label manufacturing method according to the embodiment of the present invention;

FIG. 5 is an illustrative sectional view of a continuous label body in a label manufacturing method according to an embodiment of the present invention;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Label continuous body 12 Label base material 12A Label base material paper 14 Adhesive layer 16 Release paper 18a Label base edge 18b Adhesive layer edge 20 Coating layer 22 Label part to be cut out 24 Coating layer forming agent 26 Die release Ingredient

Claims (8)

[Claims] 1. A label on which an adhesive layer is formed, wherein a coating layer is formed on a fore-edge surface of the adhesive layer. 2. The label according to claim 1, wherein the coating layer is formed by applying and curing an ultraviolet curable ink. 3. The label according to claim 1, wherein the coating layer is formed over the entire edge of the periphery of the label base material and the periphery of the pressure-sensitive adhesive layer formed on the back surface of the label base material. 4. The coating layer is formed by applying and curing an ultraviolet curable ink over the entire periphery of a peripheral edge of a label substrate and a peripheral edge of an adhesive layer formed on the back surface of the label substrate. The label according to claim 3. 5. A label base material preparing step of preparing a label base material having a pressure-sensitive adhesive layer formed on its back surface, and a coating layer forming agent near the periphery of a portion of the main surface of the label base material where a label is to be die-cut. A printing and coating step of printing and coating the coating layer forming agent, and before the coating layer forming agent is cured, at the label die-cutting portion, the surface of the coating layer forming agent and the label base from the main surface side of the label base material with a die-cutting tool. A label stamping step of stamping the label in the thickness direction of the material, and when the label stamping step in the label stamping step, the coating layer forming agent printed and applied to the main surface of the label is used. A coating layer forming step in which a coating layer is formed by flowing from the edge of the label base material of the die-cutting tool to the surface of the edge of the adhesive layer; and a step of curing the coating layer formed in the coating layer forming step. Including, label manufacturing method. 6. The label manufacturing method according to claim 5, wherein the coating layer forming agent is an ultraviolet curing ink, and the step of curing the coating layer comprises curing the ultraviolet curing ink with an ultraviolet irradiation device. 7. The method according to claim 5, wherein in the step of forming a coating layer, the coating layer is formed over the entire periphery of the peripheral edge of the label base material and the peripheral edge of the pressure-sensitive adhesive layer formed on the back surface of the label base material. The method for producing the described label. 8. The label manufacturing method according to claim 5, wherein the label die-cutting tool is a die roll in which a blade corresponding to the shape of the label is formed on the surface of the roll-shaped main body. .