JP2016148704A - Glue label and container with label - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a glue label having a resin base material in which static electricity is less likely to occur, and lifting, peeling and the like of a label are less likely to occur, at the time of labeling.SOLUTION: A glue label 10 includes a base material 11 formed of a resin film, and rayon paper 12 which is stacked on the base material 11 and has a basis weight of 10 g/mto 40 g/m; and is stuck to an adherend through an aqueous adhesive applied onto the rayon paper 12.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a glue label and a labeled container in which the label is attached to the container.

  The glue label is a label that includes a base material (paper base material) made of paper, for example, and is attached to an adherend such as a glass container via an aqueous adhesive applied to the back surface of the base material. In addition, since the paper substrate has low water resistance and the appearance of the label may be impaired due to condensation of the adherend, a substrate made of a resin film (resin substrate) is used instead of the paper substrate. Glue labels that were known are known. For example, Patent Document 1 discloses a water-absorbing easy peeling that includes a base layer (A) containing a thermoplastic resin, a crystalline polypropylene resin, a thermoplastic resin that is incompatible with the resin, and an inorganic fine powder whose surface is hydrophilized. A glue label comprising a layer (B) is disclosed.

JP 2012-214005 A

  However, in the conventional glue label using a resin base material, static electricity may occur due to friction between the labels, for example, which may hinder labeling. Furthermore, since the water-based adhesive applied at the time of labeling is difficult to dry, there is a problem that the label is liable to be lifted or peeled off.

  An object of the present invention is to provide a glue label provided with a resin base material, which is less prone to static electricity during labeling, and is less prone to lift and peeling of the label after labeling.

Glue labels of the present invention comprises a configured base of a resin film, laminated on the substrate, and a rayon paper is weight per unit area ^{10g / m 2 ~40g / m 2} , the rayon paper It is affixed to a to-be-adhered body through the water-system adhesive agent apply | coated to.

  The labeled container according to the present invention includes the above-described glue label and a container to which the glue label is attached via an aqueous adhesive applied on the rayon paper.

  The glue label according to the present invention hardly generates static electricity during labeling, and maintains a good appearance even when the label gets wet due to condensation of the adherend. Furthermore, according to the glue label which concerns on this invention, the floating and peeling of the label at the time of labeling are fully suppressed, for example.

It is sectional drawing which shows the glue label which is an example of embodiment. It is a figure which shows the container with a label by which the glue label which is an example of embodiment was affixed on the container.

Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings.
The drawings referred to in the embodiments are schematically described, and the dimensional ratios of the components drawn in the drawings may be different from the actual products. Specific dimensional ratios and the like should be determined in consideration of the following description.

FIG. 1 is a cross-sectional view showing a glue label 10 as an example of the embodiment.
As illustrated in FIG. 1, glue label 10 comprises a substrate 11 composed of a resin film, laminated on the base material 11, rayon paper 12 basis weight is 10g / m ² ~40g / m ² The label is affixed to the adherend through a water-based adhesive applied on the rayon paper 12. Hereinafter, the surface on which the rayon paper 12 is laminated is referred to as the glue label 10 and the back surface of the substrate 11. That is, the glue label 10 has the rayon paper 12 laminated on the back surface of the base material 11, and is attached to the adherend via an aqueous adhesive applied to the back surface of the glue label 10 (on the rayon paper 12). (See FIG. 2 described later).

  The glue label 10 preferably includes an adhesive layer 13 between the substrate 11 and the rayon paper 12. The adhesive layer 13 is formed by applying, for example, a heat sensitive adhesive such as a hot melt adhesive, an ultraviolet curable adhesive, an emulsion adhesive, a solvent adhesive, a pressure sensitive adhesive, or the like on the substrate 11. . Since the adhesiveness with the base material 11 and the rayon paper 12 is good, and a drying process is unnecessary, it is preferable to form the adhesive layer 13 using a hot-melt adhesive or an ultraviolet curable adhesive. In particular, it is preferable to use ultraviolet curable ink (ultraviolet curable adhesive). Since the UV curable ink is quick-drying, the fibers of the rayon paper 12 are clogged by the adhesive layer 13 or the adhesive layer 13 oozes out even if the density is low like the rayon paper 12. The base material 11 and the rayon paper 12 can be satisfactorily laminated while maintaining the moisture absorption performance of the rayon paper 12. Although the thickness of the contact bonding layer 13 is not specifically limited, Preferably it is 1 micrometer-3 micrometers.

  The glue label 10 is provided with a print layer 14 for displaying, for example, product names, designs, product descriptions, manufacturer / seller information, and the like. The printing layer 14 includes background printing such as white solid printing. In the example shown in FIG. 1, the printing layer 14 is formed on the surface of the base material 11. The printing layer 14 may be formed on the back surface of the base material 11, for example, between the base material 11 and the adhesive layer 13, or may be formed on both surfaces of the base material 11. The printing layer 14 is, for example, a gravure printing machine, a flexographic printing machine, an ink containing a coloring material such as a desired pigment or dye, a binder resin such as an acrylic resin or a urethane resin, a solvent, and various additives. It can be formed by a conventionally known printing machine such as a letterpress rotary printing machine. Although the thickness of the printing layer 14 is not specifically limited, Preferably it is 0.1 micrometer-10 micrometers.

  The glue label 10 illustrated in FIG. 1 has a laminated structure in which the rayon paper 12, the adhesive layer 13, the base material 11, and the printing layer 14 overlap in order from the back surface side. The planar view shape of the glue label 10 is, for example, a substantially rectangular shape. However, the planar view shape of the glue label 10 is not particularly limited, and may be, for example, a perfect circle shape, an elliptical shape, a triangular shape, a pentagonal shape, a hexagonal shape, or the like.

  The base material 11 is comprised with the resin film as mentioned above. Since the resin base material 11 does not absorb water like a paper base material, the use of the base material 11 maintains the good appearance of the label even if condensation of the adherend occurs. Examples of the resin film applied to the substrate 11 include polyester resins such as polyethylene terephthalate (PET) and polylactic acid (PLA), polyolefin resins such as polystyrene resin, polyethylene resin (PE), and polypropylene resin (PP). Examples thereof include films made of one kind or a mixture of two or more kinds selected from thermoplastic resins such as resins, polyvinyl chloride resins, polyamide resins, and acrylic resins. Among these, a film composed of a polyester resin, a polystyrene resin, or a polyolefin resin is preferable.

  Although the thickness of the base material 11 is not specifically limited, Preferably it is 50 micrometers-150 micrometers. The substrate 11 may have either a single layer structure or a laminated structure. When the base material 11 is comprised from a laminated | multilayer film, the laminated | multilayer film may laminate | stack the film which consists of the same kind of resin, and may laminate | stack the film which consists of different resin. Further, the base material 11 may be a foamed film containing bubbles. For example, a transparent resin film is used as the substrate 11, but an opaque resin film in which a desired pigment or the like is dispersed may be used.

  The rayon paper 12 is laminated on the base material 11 via the adhesive layer 13. The rayon paper 12 is preferably laminated on the entire back surface of the substrate 11. The rayon paper 12 is a synthetic fiber made of regenerated cellulose fiber, has good hygroscopicity and moisture release properties, and is excellent in biodegradability. Examples of the rayon constituting the rayon paper 12 include viscose rayon paper obtained from viscose and copper ammonia rayon (cupra) obtained from a copper ammonia salt solution of cellulose. The rayon paper 12 easily absorbs moisture in the air, so it suppresses the generation of static electricity during labeling, and quickly evaporates the moisture of the water-based adhesive applied during labeling, thereby preventing the label from floating or peeling off. Fulfill.

Basis weight of the rayon sheet 12 is a ^{10g / m 2 ~40g / m 2} , preferably ^{15g / m 2 ~35g / m 2} , more preferably ^{20g / m 2 ~30g / m 2} . If the basis weight of the rayon paper 12 is within this range, for example, the floating or peeling of the glue label 10 during labeling is sufficiently suppressed. The thickness of the rayon paper 12 is not particularly limited, but is preferably 15 μm to 150 μm.

  The water absorption rate of the glue label 10 (temperature 80 ° C. ± 5 ° C., humidity 90% ± 5%, 24 hours) is, for example, 0.8% to 2.5%, preferably 1.0% to 2.0%. More preferably, it is 1.3% to 1.9%. The water absorption rate of the glue label 10 can be adjusted by the rayon paper 12, particularly by the basis weight of the rayon paper 12. A method for measuring the water absorption rate will be described later.

An example of the manufacturing method of the glue label 10 provided with the said structure is as follows.
First, a long body (roll product) of the substrate 11 and a long body (roll product) of the rayon paper 12 are prepared. Next, the long body of the substrate 11 is pulled out in the MD direction (the production line direction of the glue label 10), the printing layer 14 is formed on the surface, and the ultraviolet curable ink (for example, constituting the adhesive layer 13 on the back surface) An ink containing no colorant such as a pigment (medium ink) is applied by a known method such as a letterpress printing method, and the rayon paper 12 is overlaid. And by irradiating predetermined ultraviolet rays from the rayon paper 12 side, the ultraviolet curable ink is cured to form the adhesive layer 13, and the long body of the base material 11 and the long body of the rayon paper 12 are laminated. A long body (label continuous body) of the glue label 10 is obtained. Since the rayon paper 12 has a low density, it can transmit ultraviolet rays. The long body of the glue label 10 is formed into a roll shape and stored and transported.

FIG. 2 shows the labeled container 20 with the glue label 10 attached to the container 21.
As illustrated in FIG. 2, the labeled container 20 includes a glue label 10 and a container 21 to which the label is attached. The container 21 is a glass bottle filled with alcoholic beverages, and includes a container body 22 including a bottomed cylindrical body 22a and a shoulder 22b whose diameter is reduced upward, and an opening formed at the upper end of the container body 22. And a cap 23 for closing the part. However, the container to which the glue label 10 can be attached is not limited to this, and may be a glass bottle or a plastic container filled with an energy drink, a seasoning, or other various contents. The glue label 10 is affixed to the surface of the container 21 via an aqueous adhesive applied on the rayon paper 12. In the example shown in FIG. 2, the glue label 10 having a length of about ¼ of the circumferential length of the trunk portion 22a is attached along the curved surface of the trunk portion 22a.

  The glue label 10 is supplied to the labeler in the state of the elongate body, and is adhered to the adherend such as the container 21 through the aqueous adhesive as described above. By using the glue label 10, the water content of the water-based adhesive applied at the time of labeling can be quickly evaporated, and the label can be sufficiently prevented from floating or peeling off at the time of labeling. The labeler pulls out the long body of the glue label 10 in the MD direction, cuts it into one label size using a cutting blade such as a die cut roll, and applies a water-based adhesive on the back surface of the glue label 10, that is, the rayon paper 12. After that, the label is attached to the adherend. The aqueous adhesive is not particularly limited, and examples thereof include aqueous solutions or emulsions containing starch, glue, casein, cellulose, sodium alginate, guar gum, latex, polymaleic acid polymer, polyvinyl alcohol and the like. For example, the water-based adhesive may be applied to the entire back surface of the glue label 10 in a solid shape or may be applied in a stripe shape. Further, it may be applied only to the end portion of the glue label 10. The glue label 10 is attached to an arbitrary position on the surface of the adherend via a water-based adhesive, for example, but may be wound around the adherend so that both ends of the label overlap.

  EXAMPLES Hereinafter, although an Example demonstrates this invention further, this invention is not limited to these Examples.

<Example 1>
Viscose rayon paper (manufactured by Maruhishi Papertech Co., Ltd., rayon L: density 0.37 g / s) with a basis weight of 30 g / m ² as rayon paper, as a base material polypropylene resin film (manufactured by Yupo Corporation, SGS) cm ² ) was used. First, ultraviolet curable ink (manufactured by T & K TOKA, AF medium) was applied on one surface of the substrate by printing, and then rayon paper was overlaid. Next, the applied ultraviolet curable ink was irradiated with ultraviolet rays from the rayon paper side to cure the ink, thereby forming an adhesive layer. In this way, a glue label L1 in which rayon paper was laminated on the back surface of the base material via an adhesive layer was obtained.

<Example 2>
Glue label L2 was obtained in the same manner as in Example 1 except that viscose rayon paper (manufactured by Maruhishi Papertech Co., Ltd., rayon L) having a basis weight of 20 g / m ² was used as rayon paper.

<Example 3>
Glue label L3 was obtained in the same manner as in Example 1 except that viscose rayon paper (manufactured by Maruhishi Papertech Co., Ltd., rayon L) having a basis weight of 17 g / m ² was used as rayon paper.

<Comparative Example 1>
As Comparative Example 1, Aqua Yupo LAR (a glue label in which a polypropylene foam layer was laminated on the back surface of a polypropylene base material) manufactured by Yupo Corporation was used.

<Comparative example 2>
As Comparative Example 2, only SGS manufactured by Yupo Corporation was used.

<Comparative Example 3>
As Comparative Example 3, water-resistant and oil-resistant paper (Hokuetsu Kishu Paper Co., Ltd., Poem-S: one side) was used.

  About each said glue label, the measurement of the water absorption rate, the evaluation of labeling appropriateness, and the evaluation of the floating / peeling of the label were performed by the following methods. The evaluation results are shown in Table 1.

[Measurement of water absorption rate]
Each said glue label was put into the thermostat dryer adjusted to temperature 80 degreeC and humidity 90%, the weight change 24 hours after was measured, and the water absorption (%) was calculated | required based on the following formula.
Water absorption rate = (label weight after treatment−label weight before treatment) × 100 / label weight before treatment

[Evaluation of appropriate labeling]
Each said glue label was affixed on the commercially available glass container using the labeler (100), and the obtained container with a glue label was judged on the following reference | standard. In this labeling step, 5 g / m ^{2 of} an aqueous adhesive was applied to the entire back surface of each glue label, and the glue label was attached to a glass container.
Failure rate that cannot be applied to the target position is less than 2%.
Defect occurrence rate is 2% or more: ×

[Evaluation of label floating / peeling]
The above labeled containers were judged according to the following criteria.
Defect occurrence rate with confirmed lifting or peeling of label is less than 2%: ○
Defect occurrence rate is 2 or more and less than 5%: △
Defect occurrence rate is 5% or more: ×

  As shown in Table 1, the glue labels L1 to L3 of the examples all have a water absorption rate in the range of 1.0 to 2.0%, and are more suitable for labeling than the glue labels of Comparative Examples 1 and 2. And the occurrence rate of label floating / peeling is low as compared with the glue label of the comparative example. In particular, according to the glue labels L1 and L2, it is possible to further reduce the occurrence rate of label floating / peeling.

  The glue labels L1 to L3 of the examples are less likely to generate static electricity during labeling, so that good labeling suitability is obtained, and a good appearance is maintained even when the label is wet due to condensation on the adherend. Is done. Furthermore, according to the glue labels L1 to L3, the water content of the aqueous adhesive applied at the time of labeling can be quickly evaporated, and the label can be sufficiently prevented from being lifted or peeled off at the time of labeling.

  10 Glue Label, 11 Base Material, 12 Rayon Paper, 13 Adhesive Layer, 14 Print Layer, 20 Labeled Container, 21 Container, 22 Container Body, 22a Body, 22b Shoulder, 23 Cap

Claims (5)

A substrate composed of a resin film;
Laminated on the base material, a rayon paper basis weight is ^{10g / m 2 ~40g / m 2} ,
A glue label that is attached to an adherend through an aqueous adhesive applied on the rayon paper. Basis weight of the rayon paper is ^{20g / m 2 ~30g / m 2} , glue label according to claim 1.   The glue label according to claim 1 or 2, wherein the water absorption of the rayon paper under conditions of a temperature of 80 ° C ± 5 ° C, a humidity of 90% ± 5%, and 24 hours is 1.0% to 2.0%.   The glue label as described in any one of Claims 1-3 with which the rayon paper is laminated | stacked on the said base material via the ultraviolet curable ink. Glue label as described in any one of Claims 1-4,
A container to which the glue label is affixed via an aqueous adhesive applied on the rayon paper;
Labeled container with

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