JP2002258755A - Label continuum - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a label continuum which extends the range of choice of a label substrate and a pressure sensitive adhesive layer and can be produced by many items small lots production. SOLUTION: The label continuum 10 includes a long label substrate 14, a pressure sensitive adhesive layer 16 formed on the rear face of the substrate 14 and a release layer 18 formed on the front face side of the substrate 14, and the substrate 14 is wound in such a way that the release layer 18 side and the adhesive layer 16 side confront each other and adhere temporarily to each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a label continuum in which a plurality of labels are continuously formed, and more particularly to a non-separable label without a so-called release paper, which is suitable for use as, for example, a price tag or a barcode label. Continuum.

[0002]

2. Description of the Related Art Heretofore, as a label having no release paper, which is a so-called non-separ type, a label having a heat-resistant polyethylene and a pressure-sensitive adhesive layer formed of a delayed tack type heat-adhesive adhesive formed on the back surface is used. is there.

[0003]

In the case where such a so-called hot-melt type pressure-sensitive adhesive layer is formed, it can be used by being wound up without using a release paper. That is, before heating to melt the heat-adhesive adhesive to impart pressure sensitivity, the adhesive does not have adhesiveness, and thus does not adhere even when wound in a roll shape.
However, this conventional non-separable label requires a large-scale manufacturing facility, requires a large capital investment, and requires heating to activate the heat-adhesive adhesive. A material having excellent heat resistance, such as polyethylene, must be selected as a base material. For example, a material having low heat resistance such as an ultra-thin tape-shaped label continuous body cannot be used. In addition, the selection range is extremely limited, for example, a component that is not affected by the components contained in the adhesive forming the adhesive layer must be selected.

[0004] Therefore, an object of the present invention is to provide a label continuum capable of expanding the range of selection of a label base material and a pressure-sensitive adhesive layer, and capable of producing a large variety of small lots.

[0005]

According to a first aspect of the present invention, there is provided a label continuous body comprising: a long label base material; a pressure-sensitive adhesive layer formed by transferring to a back surface of the label base material; A label continuous body including a release layer formed on the side, and a label base material wound thereon such that the release layer side and the pressure-sensitive adhesive layer side face and temporarily adhere to each other.

The label continuum according to the second aspect is the label continuum according to the first aspect, wherein a printing layer is formed on the surface of the label substrate, and a release layer is formed on the surface of the printing layer.

According to a third aspect of the present invention, in the label continuous body, the printing layer is formed on the surface of the label substrate and on the surface of the release layer, and is formed of a printing ink having excellent releasability.
It is a label continuous body of description.

The label continuous body according to any one of claims 1 to 3, wherein the label substrate has a thermosensitive coloring layer formed on the surface opposite to the pressure-sensitive adhesive layer. Body.

[0009]

According to the first aspect of the present invention, the release layer side formed on the front side of the label substrate and the pressure-sensitive adhesive layer side formed on the back side of the label substrate face and temporarily adhere to each other. As described above, since the label base material is wound, it is rewound.

According to the second aspect of the present invention, since the print layer is formed on the surface of the label base material and the release layer is formed on the surface of the print layer, the wound label base material is unwound.

According to the third aspect of the present invention, the printing layer is formed on the surface of the release layer, which is the surface of the label substrate, and is formed of a printing ink having excellent releasability. The label substrate is rewound.

According to the fourth aspect of the present invention, the label substrate comprises:
Since a heat-sensitive coloring layer is formed on the surface on the side opposite to the pressure-sensitive adhesive layer, the color is formed by heating.

[0013]

According to the first aspect of the present invention, the pressure-sensitive adhesive layer is formed on the back surface of the label base material to form the pressure-sensitive adhesive layer on the surface of the label base material at normal temperature. . Therefore, when selecting a label base material, even a very thin tape or the like having relatively low heat resistance can be used, and the pressure-sensitive adhesive in an emulsion state before the formation of the pressure-sensitive adhesive layer is originally formed. Since the solvent or the like is removed before the transfer, the range of choices of the pressure-sensitive adhesive forming the pressure-sensitive adhesive layer can be expanded regardless of the properties of the label substrate. further,
In particular, it is possible to select a thermally-colored material such as thermal paper as the label base material, and it is possible to cope with any printer, such as a printer that performs printing with a transfer foil that is relatively heated.

According to the second aspect of the present invention, since the printing layer is formed on the surface of the label substrate and the release layer is formed on the surface of the printing layer, the pressure-sensitive adhesive formed on the back surface of the label substrate Even if the label substrate is wound up so that the layer and the release layer formed on the surface are temporarily attached to face each other, it can be rewound and used by cutting labels one by one from a continuous label can do.

According to the third aspect of the present invention, the printing layer is formed on the surface of the release layer, which is the surface of the label substrate, and is formed of a printing ink having excellent releasability. Even if the label base material is wrapped so that the release layer formed on the front side and the pressure-sensitive adhesive layer formed on the back side are temporarily attached to face each other, it can be rewound, and from the label continuous body It can be cut into individual labels and used.

According to the fourth aspect of the present invention, the label substrate comprises:
Since the heat-sensitive coloring layer is formed on the surface opposite to the pressure-sensitive adhesive layer, printing can be performed relatively easily by a thermal printer or the like.

The above and 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 accompanying drawings.

[0018]

FIG. 1 is a diagram showing a label continuum according to an embodiment of the present invention.
It is the perspective view and (B) is the sectional view. FIG.
3 is an illustrative view showing one example of a manufacturing method of the example shown in FIG. 1, FIG. 2 is a view showing a first half of the process, and FIG. 3 is a view showing a second half of the process.

The label continuum 10 of this embodiment has a plurality of labels 12 formed continuously in a strip shape, and is cut at the boundaries of the labels 12 to be used as one label 12 respectively. It is.

Then, a pressure-sensitive adhesive layer 16 formed by being transferred to the back surface of the long label base material 14 is formed, and a release agent layer 18 is formed on the front side of the label base material 14.
Further, a printing layer 20 is formed on a part of the surface of the label base 14 between the label base 14 and the front side of the label base 14. The printing layer 20 is provided for each label 1
The display portions of the labels 12 are formed intermittently at a constant interval between the display portions of the labels 12 so as to form the display portions of the labels 12 with two boundaries therebetween.

As shown in FIG. 1 (A), before the label continuous body 10 is used as a label, the release agent layer 18 and the pressure-sensitive adhesive layer 16 are temporarily adhered so as to face each other.
The label base material 14 is wound in a roll shape. In this embodiment, in the release agent layer side 18 of the label base material 14,
A thermosensitive coloring layer 22 is formed on the side surface.

In this embodiment, the long label base material 14 is, for example, a plastic film or sheet of paper, synthetic paper, cellophane, polystyrene, polyester or the like, or a long strip of aluminum foil. A continuous strip of continuous labels is used for each label.
In order to cut it into two pieces, it is necessary to use a material that can be cut by hand or a mechanical device such as a cutter. Also, cuts (not shown) such as perforations may be formed at predetermined intervals so that the labels 12 can be cut into predetermined strips.

The pressure-sensitive adhesive layer 16 formed on the rear surface of the label base material 14 is for giving an adhesive force to each label 12, and is made of, for example, an acrylic copolymer resin, a rubber-based adhesive, or the like. A known pressure-sensitive adhesive is used.

The thermosensitive coloring layer 22 formed on the front side of the label substrate 14 is formed, for example, by applying and drying a thermosensitive coloring agent containing a mixture of a transparent or monochromatic leuco dye, an acidic substance and a binder. You. In this case, as the leuco dye, for example, crysital violet lactone, 3-indolino-3-P-dimethylaminophenyl-6-dimethylaminophthalide, 3-diethylamino-7-chlorofluoran, 2-diethylamino-7
-Cyclohexylaminofluoran, 3-diethylamino-5-methyl-7-t-butylfluoran, 3-diethylamino-6-methyl-7-anilinofluoran, 3
-Diethylamino-6-methyl-7-P-butylanilinofluoran and the like.

As the acidic substance, for example,
2-bis (4'-oxyphenyl) propane, 4-phenylphenol, 4-hydroxyacetophenone, 2,
2'-dihydroxydiphenyl, 2,2'-methylenebis (4-methyl-6-t-butylphenol), 4,
4 'isopropylidene diphenol, 4,4'-isopropylidene bis (2-chlorophenol), 4,4'-
Isopropylidenebis (2-methylphenol), 4,
4'-ethylenebis (2-methylphenol), 4,
4'-thiobis (6-t-butyl-3-methylphenol) and the like.

Further, as the binder, for example, polyvinyl alcohol, methoxycellulose, hydroxyethylcellulose, carboxymethylcellulose, polyacrylamide, polyacrylic acid, starch, gelatin,
Examples include water-soluble or aqueous emulsions of polystyrene, vinyl chloride-vinyl acetate copolymer and the like. The heat-sensitive coloring layer 22 can be colored by heating it with a thermal head or the like of a printer.

On the surface of the label base 14 on the side of the heat-sensitive coloring layer 22, there is further formed a printing layer 20 for forming a display portion of each label 12 across a boundary of each label 12. The printing layer 20 is formed by printing using a general printing ink by lithographic printing, letterpress printing, offset printing, or another known printing method. The release agent layer 18 formed on the surface side of the label base material 14, that is, on the surface of the thermosensitive coloring layer 22 and the printing layer 20, can be cured at a temperature that does not affect the thermosensitive coloring layer 22, for example. It is formed by printing and applying a release agent such as silicone resin.

In this embodiment, the release agent constituting the release agent layer 18 may be an ultraviolet ray or an electron beam such as UV silicon (so-called ultraviolet curing silicon) or EB silicon (so-called electron beam curing silicon). It is preferable to select a material which is cured by the method described above and does not affect the thermosensitive coloring layer 22.

Next, an example of the manufacturing method shown in FIG. 1 will be described mainly with reference to FIGS.

First, a long strip-shaped process sheet 24 made of paper, film, sheet-like plastic, or the like wound in a roll is prepared. The process sheet 24 is used only in the manufacturing process, and does not remain in the completed label continuous body 10. Then, the surface of the process sheet 24 is printed with a release agent such as silicone resin or fluorine resin.
A release layer 24a which is applied and has releasability is formed.

Next, the release layer 24a of the process sheet 24
Pressure-sensitive adhesive 2 forming a pressure-sensitive adhesive layer 16 on the surface thereof
6 is printed and applied.
00 includes two rollers 102a and 102b.
The lower part of the roller 102 a is immersed in the pressure-sensitive adhesive 26 stored in the pan 104. Therefore, roller 1
By rotating 02a and 102b, on the surface of the release layer 24a of the process sheet 24 guided to the site,
The pressure-sensitive adhesive 26 is applied by printing. In addition, as the adhesive coating device, a coating device such as a gravure roll coater, a reverse roll coater, or an air knife coater may be used, or a known printing machine such as a screen printing machine may be used.

Then, the process sheet 24 on which the pressure-sensitive adhesive 26 is printed is applied to a dryer 106 including, for example, a heater. In the dryer 106, the pressure-sensitive adhesive 26 printed and applied to the process sheet 24 is dried to form the pressure-sensitive adhesive layer 16. When using an adhesive containing a water-soluble resin such as EVA, vinyl acetate, or acrylic, or a solvent-based adhesive composed of vinyl chloride, urethane, acrylic, or the like as the adhesive 26, a dryer is used, and a rubber-based adhesive is used. When using an EVA-based hot melt adhesive,
Use a cooler.

On the release sheet 24a side of the process sheet 24 on which the pressure-sensitive adhesive layer 16 is formed, the label substrate 14
Are stacked. The base paper 14a of the label base 14 is also formed in the same width as the process sheet 24, and the thermosensitive coloring layer 22 is already formed on the surface of the base paper 14a of the label base 14. The heat-sensitive coloring layer 22 is formed on the side opposite to the above-mentioned pressure-sensitive adhesive layer 26 side.

As described above, the laminate in which the process sheet 24, the layer of the pressure-sensitive adhesive 26, and the label base material 14 are laminated is preliminarily finalized in a laminated state before being led to the next process such as printing. It is slit by the slitter 108 so as to have a width substantially similar to the width of the label continuous body 10 as a product, and is wound into a roll after the slit.

The laminate 30 formed by laminating the process sheet 24 and the continuous body of the label substrate 14 with a layer of the pressure-sensitive adhesive 26 and temporarily attaching the laminate is wound into a roll, and
In the state where 0 is wound in a roll shape, it is guided to the printing and release agent coating apparatus in the next step shown in FIG.

Next, the roll-shaped laminate 30 wound up in the form of a laminated roll of the laminate 30 is loaded into the manufacturing apparatus shown in FIG. 3, and the laminate 30 is rewound to form the print layer 20. To the printing device 110. This printing device 1
Reference numeral 10 denotes a unit for printing a display unit constituting each label 12, for example, printing an image composed of characters such as a product name or an appropriate design by a known printing device such as planographic printing, letterpress printing or offset printing. It is.

Subsequently, the laminate 30 on which the print layer 20 is formed is guided to a release agent coating device 120 for forming a release agent layer 18 on the surface of the print layer 20 of the label substrate 14. The release agent applying device 120 includes a main roller 122
a and a roller 122b provided opposite to the main roller 122a. And the main roller 122a is
The lower part is immersed in the release agent 32 stored in the pan 124, and the release agent 32 is applied by the main roller 122a to the surface of the label substrate 14 of the laminate 30 sandwiched between the main roller 122a and the roller 122b. Is done. And
The laminate 30 on which the release agent 32 has been printed is moved to a dryer 126 including, for example, a heater. Dryer 126
Then, the release agent 32 printed and applied to the laminate is dried to form the release agent layer 18. Then, the release agent layer 18
Then, the label continuous body 10 in which the laminate 30 is laminated is guided to the process sheet removing device 130. The process sheet removing device 130 includes a roller 132, peels the process sheet 24 from the surface of the pressure-sensitive adhesive layer 16 of the laminate 30, and winds the process sheet 24 in a roll shape so that it can be reused separately.

On the other hand, the laminate constituting the label continuum 10 is wound in a roll shape while cutting both side edges or one side edge with the slitter 140 so that the label continuity 10 has a further optimum width. Can be

Next, a label continuum according to another embodiment different from the example shown in FIG. 1 will be described.

FIG. 4 is a sectional view of a label continuum according to another embodiment. FIG. 5 is an illustrative view showing one example of a manufacturing method of the example shown in FIG. 4;

Unlike the example shown in FIG. 1, the label continuous body 50 has a release agent layer 58 formed on the surface of a label substrate 54. Further, a printing layer 60 is formed on the surface of the release agent layer 58. However, the pressure-sensitive adhesive layer 56 is formed on the back surface of the label base material 54 as in the example shown in FIG. 1, and the thermosensitive coloring layer 62 is formed on the surface of the label base material 54. This is the same as the example shown in FIG. In addition, as the printing ink for forming the printing layer 60, it is necessary to select a printing ink that has its own releasability.

The label continuum 50 in the example shown in FIG.
A laminate 70 of the label base material 54 and the processed sheet 64, which is responsible for the first half of the manufacturing process, is manufactured using the same apparatus as the example shown in FIG. 2, but the second half of the manufacturing method shown in FIG. As shown in FIG. 5, the manufacturing apparatus is used to print and apply the release agent 72 to the surface of the label substrate 54 of the laminate 70 by the release agent application device 220 and cure the printed and applied release agent 72. To form a release agent layer 58, and the printing device 210 is used to form the print layer 60 on the surface of the release agent layer 58 downstream thereof.

In the example shown in FIG. 5, unlike the example shown in FIG. 3, the slitter 240 as an apparatus for adjusting the label base material 54 to the optimum width of the label continuous body 50 is processed by the process sheet removing device 230. The slit 64 is provided at a more downstream position immediately before being wound into a roll so as to slit after being peeled off from the pressure-sensitive adhesive layer 56.

[Brief description of the drawings]

FIG. 1 is a view showing a continuous label body according to an embodiment of the present invention, in which (A) is a perspective view and (B) is a cross-sectional view thereof.

FIG. 2 is an illustrative view showing one example of a manufacturing method in the example shown in FIG. 1;

FIG. 3 is an illustrative view showing one example of a manufacturing method in the example shown in FIG. 1;

FIG. 4 is a cross-sectional view of a continuous label body according to another embodiment.

FIG. 5 is an illustrative view showing one example of a manufacturing method of the example shown in FIG. 4;

[Explanation of symbols]

 10,50 label continuous body 12,52 label 14,54 label base 16,56 pressure-sensitive adhesive layer 18,58 release agent layer 20,60 print layer 22,62 heat-sensitive coloring layer 24,64 process sheet 24a release layer 26 Pressure-sensitive adhesive 30, 70 Laminate 32, 82 Release agent 100, 200 Adhesive application device 102 Roller 104 Pan 106 Dryer 108 Slitter 110, 210 Printing device 120, 220 Release agent application device 122 Main roller 124 Pan 126 Dryer 130 , 230 Process sheet removing device 132 Roller 140, 240 Slitter 222 Curing device

Claims (4)

[Claims] 1. A long label base material, comprising: a pressure-sensitive adhesive layer formed by transferring to a back surface of the label base material; and a release layer formed on a front surface side of the label base material. A label continuum in which a label base material is wound so that the release layer side and the pressure-sensitive adhesive layer side face and temporarily adhere to each other. 2. A printing layer is formed on a surface of a label substrate,
The label continuous body according to claim 1, wherein a release layer is formed on a surface of the print layer. 3. The printing layer is a surface of a label substrate,
The label continuum according to claim 1, wherein the label continuum is formed on the surface of the release layer and is formed of a printing ink having excellent releasability. 4. The label base material according to claim 1, wherein a heat-sensitive coloring layer is formed on a surface opposite to the pressure-sensitive adhesive layer.
A label continuum according to any one of the above.