JP2015121695A - Cylindrical label, and labeled package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cylindrical label which can prevent coming-off of a fluorescent coloring material and has excellent fluorescence feeling.SOLUTION: There is provided a cylindrical label 1 in which a film 3 is formed into a cylindrical shape, a transparent resin layer 4 is provided on the rear surface side of the film 3, and a fluorescent layer 5 containing a fluorescent coloring material is provided on the whole or a part of the rear surface of the transparent resin layer 4. The transparent resin layer 4 is formed of medium ink or medium ink containing a pearl pigment.

Description

  The present invention relates to a cylindrical label provided with a fluorescent layer containing a fluorescent color material.

2. Description of the Related Art Conventionally, label packages in which a cylindrical label is attached around various adherends such as beverage containers have been widely distributed.
The cylindrical label is usually obtained by cutting a long cylindrical label body in which a long base material is formed into a cylindrical shape into a predetermined length. And a label package is obtained by putting this cylindrical label on an adherend.
The cylindrical label is printed in various ways for the purpose of design. Among them, a fluorescent color material containing a fluorescent color material is used to give a feeling of fluorescence (a vivid color effect) and to attract attention. A fluorescent printing layer using ink may be applied.
Such fluorescent ink is printed on the surface (outer surface) of the cylindrical label (Patent Document 1).

However, when the fluorescent ink is printed on the surface of the cylindrical label, there is a problem that the fluorescent color layer comes off due to the fluorescent printing layer coming into contact with foreign matter during storage and conveyance of the cylindrical label or label package. When the fluorescent color material falls off, the dust adheres to the transport line of the cylindrical label or the label package, and the label design is impaired.
On the other hand, when the fluorescent ink is printed on the back surface (inner surface) of the cylindrical label, the fluorescent color material can be prevented from falling off, but the fluorescent feeling due to the fluorescent printed layer does not sufficiently appear.

JP 2004-252220 A

  An object of the present invention is to provide a cylindrical label and a label package that can prevent a fluorescent color material from falling off and have excellent fluorescence.

  The present invention provides a cylindrical label in which a film is formed in a cylindrical shape, wherein a transparent resin layer is provided on the back surface side of the film, and a fluorescent color material is included in the entire back surface or a part of the back surface of the transparent resin layer. A layer is provided.

The preferable cylindrical label of this invention is a printing layer in which the said transparent resin layer contains 70 mass% or more of transparent resin.
The preferable cylindrical label of this invention is a printing layer in which the said transparent resin layer contains 70 mass%-95 mass% of transparent resin, and contains 5 mass%-25 mass% of pearl pigments.
In a preferred cylindrical label of the present invention, a back layer is provided on the back surface of the fluorescent layer, and the back layer is at least one layer selected from a transparent printing layer, a colored printing layer, and an adhesive layer.
Moreover, the label package of the present invention is such that the cylindrical label is attached to an adherend.

  In the cylindrical label of the present invention, the fluorescent color material contained in the fluorescent layer is difficult to drop off, and a sufficient fluorescent feeling appears when viewed from the outside. Such a cylindrical label of the present invention is easily attracted to eyes and can be suitably used as a decorative label.

The perspective view of the cylindrical label which concerns on one embodiment of this invention. The front view which folded the cylindrical label in the flat state. The expanded cross-sectional view cut | disconnected by the III-III line of FIG. FIG. 4 is an enlarged longitudinal sectional view taken along line IV-IV in FIG. 2 and omitting an intermediate portion. The perspective view of a label base material. The expanded longitudinal cross-sectional view of the cylindrical label which concerns on other embodiment. The front view containing the partial longitudinal cross-section of the label package of this invention. The expanded longitudinal cross-sectional view of the cylindrical label which concerns on further another embodiment.

An embodiment of the present invention will be described.
In this specification, the “surface” of a certain member or layer means a surface on the radial direction side with respect to the cylindrical label, and the “back surface” of a certain member or layer refers to the cylindrical label. It means the surface on the radial direction side with respect to the reference. In addition, the description “PPP to QQQ” means “PPP or more and QQQ or less”.
Note that the dimensions of the members and layers in each figure are different from the actual ones.

1 and 2, the cylindrical label 1 of the present embodiment has a sheet-like label base material 2 shown in FIG. 5 in a cylindrical shape, and its side end portions 2a and 2b are overlapped to form one side end portion 2a. It is the cylindrical body formed by adhere | attaching the back surface and the surface of the other side edge part 2b. The bonded portion between the side end portions 2a and 2b is referred to as a center seal portion.
Usually, the said cylindrical label 1 is provided with the form of the cylindrical label elongate body which the opening edges of the some cylindrical label 1 connected continuously. In use, the cylindrical label 1 is obtained by cutting the long cylindrical label body into a predetermined length. Similar to the cylindrical label 1, the cylindrical label long body is a long cylindrical body formed by forming a long label base material into a cylindrical shape and adhering both side ends thereof.

The long cylindrical label body is usually folded in a flat shape by two opposing folding lines, stored and transported in a roll shape, and loaded into a labeler described later. FIG. 2 shows a state in which the cylindrical label 1 is folded flat.
The cylindrical label 1 is a heat-shrinkable cylindrical label that can be thermally contracted at least in the circumferential direction, a self-expandable cylindrical label that can be expanded and contracted at least in the circumferential direction, or a heat that can be thermally contracted and expanded at least in the circumferential direction. Either a shrinkable or self-stretching cylindrical label may be used. The heat-shrinkable cylindrical label (also referred to as a shrink tube or a shrink label) is formed using a film having heat-shrinkability, and the self-stretchable cylindrical label (also referred to as a stretch label) has self-stretchability. The heat-shrinkable and self-stretchable cylindrical label (also referred to as a shrink stretch label) is formed using a film having heat-shrinkability and self-stretchability.

As shown in FIG. 5, the label substrate 2 includes a film 3, a transparent resin layer 4 provided on the back surface side of the film 3, and a fluorescent layer provided on the entire back surface or a part of the back surface of the transparent resin layer 4. 5 and the design print layer 6 provided on the back surface side of the film 3. In the illustrated example, the design print layer is not provided on the back surface of the fluorescent layer 5, but the design print layer may be provided on the entire back surface of the fluorescent layer 5 or a part thereof as necessary (not shown). ) By forming the label substrate 2 in a cylindrical shape with the fluorescent layer 5 on the inside, a cylindrical label 1 as shown in FIGS. 1 to 4 is configured.
Specifically, the material of the film 3 is not particularly limited, and conventionally known materials can be used according to the properties. For example, heat-shrinkable films include polyester resins such as polyethylene terephthalate and polylactic acid, olefin resins such as polypropylene, styrene resins such as polystyrene and styrene-butadiene copolymers, cyclic olefin resins, and vinyl chloride. Examples thereof include a film made of a thermoplastic resin composed of one kind selected from thermoplastic resins such as a resin, or a mixture of two or more kinds. Since the film is relatively strong and the fluorescent feeling of the fluorescent layer 5 appears sufficiently, it is preferable to use a polyester film mainly composed of a polyester resin as the film 3, and among the polyester films, a polyethylene terephthalate resin is preferable. It is more preferable to use a polyethylene terephthalate-based film containing as a main component. Examples of the self-stretchable film include low density polyethylene (LDPE), linear low density polyethylene (LLDPE), and metallocene polyethylene (linear low density polyethylene obtained by polymerization using a metallocene catalyst). And polyethylene-based resin films such as ethylene-vinyl acetate copolymer, ethylene- (meth) acrylic acid ester copolymer, and ethylene- (meth) acrylic acid copolymer.
The film 3 may be a single layer or a laminate in which two or more layers are laminated and bonded. Moreover, when the said film 3 is a laminated body of 2 or more layers, each layer may be formed with the same kind material, or each layer may be formed with a different material. Preferably, the film 3 is a single layer film or a laminate of two or more layers formed from the same kind of material. Moreover, when a heat-shrinkable film is a laminated body, it is preferable that the surface layer is the said polyester-type film at least.
The film 3 is excellent in transparency. The transparent film 3 is preferably a film having a total light transmittance of 70% or more, more preferably 80% or more, and further preferably 90% or more. However, the total light transmittance is measured by a measurement method based on JIS K 7361-1 (Measurement method of the total light transmittance of a plastic-transparent material (single beam method)). In the present specification, the transparency may be either colorless and transparent or colored and transparent, but is preferably colorless and transparent.
Although the thickness of the film 3 is not specifically limited, For example, they are 20 micrometers-100 micrometers, Preferably, they are 30 micrometers-80 micrometers.

The transparent resin layer 4 may be provided on the entire back surface of the film 3 (except for the back surface of one side end 2a constituting the center seal portion in order to ensure the adhesive strength of the center seal portion), or , (Except for the back surface of one side end 2a of the center seal portion) may be provided in a partial region of the film 3. In the illustrated example, the transparent resin layer 4 is provided only in the lower region of the label substrate 2. The transparent resin layer 4 is a solidified layer of transparent resin. The transparent resin layer 4 may contain other components in addition to the transparent resin. Examples of other components include waxes, lubricants, thickeners, antifoaming agents, fungicides, and the like. Furthermore, the transparent resin layer 4 may contain a pearl pigment. In the transparent resin layer 4, the content of the transparent resin is not particularly limited. When the transparent resin layer 4 does not contain a pearl pigment, the content of the transparent resin is, for example, 70% by mass or more, preferably 80% by mass or more, more preferably 90% by mass in the total amount of the transparent resin layer 4. % Or more, particularly preferably 95% by mass or more. When the transparent resin layer 4 contains a pearl pigment, the content of the transparent resin is, for example, 70% by mass to 95% by mass, preferably 75% by mass to 90% by mass in the total amount of the transparent resin layer 4. is there. When the pearl pigment is contained, the amount of the pearl pigment is not particularly limited. However, when the pearl pigment is contained in too much amount, the fluorescence of the fluorescent layer 5 is concealed and the fluorescent light is sufficiently visible when the cylindrical label 1 is viewed from the outside. There may be no feeling. From this viewpoint, the content of the pearl pigment in the transparent resin layer 4 is preferably 5% by mass to 25% by mass and more preferably 10% by mass to 20% by mass in the total amount of the transparent resin layer 4. Examples of the pearl pigment include a mica coated with a metal oxide having a relatively high refractive index such as titanium oxide and iron oxide in a thin film shape. Such a pearl pigment itself exhibits white or silver color.
Examples of the transparent resin include acrylic resins, urethane resins, polyvinyl chloride resins, vinyl chloride-vinyl acetate copolymers, butyral resins, styrene-maleic acid copolymers, polyester resins, polyamide resins. Phenolic resin, urea resin, melamine resin, ketone resin, alkyd resin, epoxy resin, cellulose resin and the like.
The formation method of the transparent resin layer 4 is not specifically limited, The formation material containing transparent resin can be formed using a conventionally well-known printing method, a melt extrusion method, etc. In this specification, the printing method includes a method called a coating method.

Since the transparent resin layer 4 can be formed relatively easily in a desired region, the transparent resin layer 4 is preferably formed by a printing method. In this case, a medium ink or a medium ink containing a pearl pigment is used as a material for forming the transparent resin layer 4.
The medium ink is a transparent ink which does not substantially contain a pigment (coloring material) and mainly contains a transparent resin. Specifically, the medium ink includes, for example, water (and / or alcohol), an acrylic resin (including an acrylic copolymer such as an acrylic-urethane copolymer), a polyester resin, a urethane resin, and an aqueous resin. Emulsion type in which transparent resin such as polyamide resin is dispersed; Ketone resin, vinyl chloride resin, vinyl chloride-vinyl acetate copolymer, acrylic resin in organic solvent such as toluene, methyl ethyl ketone, ethyl acetate, isopropyl alcohol (Including acrylic copolymers such as acrylic-urethane copolymers), solvent type in which transparent resins such as urethane resins, polyester resins and cellulose resins are dissolved; transparent polymerizable resins such as acrylate Polymerization type containing a polymerization initiator; and the like. Preferably, a medium ink of acrylic resin or urethane resin is used. The medium ink may contain other components described above.
The medium ink containing the pearl pigment (hereinafter referred to as pearl medium ink) is obtained by mixing a pearl pigment with the medium ink.
Although the thickness of the said transparent resin layer 4 is not specifically limited, For example, they are 0.2 micrometer-5 micrometers, Preferably they are 0.4 micrometer-4 micrometers.
Although it does not specifically limit as transparency of the said transparent resin layer 4, For example, the total light transmittance of visible region is 70% or more, Preferably it is 80% or more, More preferably, it is 85% or more. However, the total light transmittance of the transparent resin layer 4 is JIS K 7361-1 (total light of plastic-transparent material) using a sample in which a transparent resin layer 4 having a thickness of 3 μm is provided on one surface of a glass substrate having a thickness of 1 mm. It is measured by a measurement method based on the transmittance measurement method (single beam method).

  The fluorescent layer 5 is a layer containing a fluorescent color material. Conventionally known fluorescent dyes and fluorescent pigments can be used as the fluorescent color material. Examples of the fluorescent dye include dyes such as fluorescein, coumarin, rhodamine, oxazole, pyrazoline, thiadiazole, spiropyran, pyrenesulfonic acid, benzimidazole, and diaminostilbene. As the fluorescent pigment, for example, a fluorescent dye as described above is dissolved or pulverized in a resin component such as polyvinyl chloride resin, alkyd resin, polymethacrylate resin, urea resin, melamine resin, or the like. Organic pigments obtained by impregnation with zinc; zinc sulfide activated with copper, silver, manganese, etc., zinc silicate activated with manganese, zinc sulfide activated with silver, copper, etc., cadmium, bismuth, etc. And inorganic pigments such as activated calcium sulfide, samarium, cerium and the like activated strontium sulfide and lead activated calcium tungstate. Two or more kinds of fluorescent color materials can be mixed and used, but it is preferable to use only one kind from the viewpoint of improving fluorescence.

The fluorescent layer 5 is provided so as to overlap the transparent resin layer 4. The fluorescent layer 5 may be provided on at least a part of the back surface of the transparent resin layer 4. Therefore, the fluorescent layer 5 may be provided on the entire back surface of the transparent resin layer 4 as in the illustrated example. When the transparent resin layer 4 is partially provided on the back surface of the film 3 to produce a portion where the back surface of the film 3 is exposed, the fluorescent layer 5 may be provided also on the exposed portion of the film back surface. Or the fluorescent layer does not need to be provided in the part. Specifically, in the example shown in FIG. 4, the transparent resin layer 4 is provided in a solid shape, but for example, the transparent resin layer 4 is formed so as to represent a desired design (for example, a checkered pattern) by the transparent resin layer. When patterning and intermittently providing in the direction of the film surface (see FIG. 6), the transparent resin layer 4 has portions 3a (exposed portions on the back surface of the film) that do not have a transparent resin in the direction of the film surface. FIG. 6 is an enlarged cross-sectional view in which a cylindrical label of another embodiment is cut at the same position as that of the IV-IV line in FIG. 2 and an intermediate portion thereof is omitted. In the example of FIG. 6, the fluorescent layer 5 is provided on the back surface of the transparent resin layer 4 and the exposed film back surface portion 3a. Thus, by providing the fluorescent layer 5 including the transparent resin layer 4 and the portion where the transparent resin layer is not provided, the cylindrical label 1 having a different fluorescence feeling can be configured.
In addition, the preferable fluorescent layer 5 of this invention has favorable adhesiveness not only with the transparent resin layer 4 but the film 3, and it can also provide directly on the back surface of the film 3 without providing a primer layer.
Further, although the fluorescent layer 5 is provided in a solid shape, the fluorescent layer 5 may be patterned so that a desired design (for example, characters, identification display, etc.) is represented by the fluorescent layer.

The fluorescent layer 5 includes a fluorescent color material and a polymer. The method for forming the fluorescent layer 5 is not particularly limited, and for example, a forming material containing a fluorescent color material can be formed using a conventionally known printing method, melt extrusion method, or the like.
Since the fluorescent layer 5 can be formed relatively easily in a desired region, the fluorescent layer 5 is preferably formed by a printing method. In this case, fluorescent ink is used as a material for forming the fluorescent layer 5.
The fluorescent ink is an ink containing a fluorescent color material and a polymer. The fluorescent ink may contain other components. The polymer in the fluorescent ink contributes to fixing the fluorescent color material and constituting the layer. The polymer of the fluorescent ink is not particularly limited, and those exemplified as the transparent resin can be appropriately used. Since the adhesiveness to the transparent resin layer 4 and the film 3 becomes good, it is preferable to use the acrylic resin or the urethane resin as described above as the polymer of the fluorescent ink.
The blending amount of the fluorescent color material is not particularly limited, but if too much fluorescent color material is contained, the ratio of the polymer becomes relatively small, so that the fluorescent layer 5 becomes brittle, and on the other hand, too much fluorescent color material is contained. If the amount is too small, there is a possibility that sufficient fluorescence does not appear. From this viewpoint, the blending amount of the polymer is 30% by mass to 85% by mass, and preferably 55% by mass to 80% by mass in the total amount of the fluorescent layer 5. The compounding amount of the fluorescent color material is 15% by mass to 65% by mass, and preferably 20% by mass to 40% by mass in the total amount of the fluorescent layer 5.

Although the thickness of the said fluorescent layer 5 is not specifically limited, For example, they are 0.2 micrometer-5 micrometers, Preferably they are 0.4 micrometer-4 micrometers.
The fluorescent layer 5 is formed by printing the fluorescent ink on the back surface of the transparent resin layer 4 by a conventionally known printing method.

The design printing layer 6 is a layer for displaying a design or the like, and is made of a conventionally known printing ink. In the illustrated example, the design print layer 6 is provided in a region on the back side of the film 3 where the fluorescent layer 5 is not provided.
The design printing layer 6 can be formed using a conventionally known printing ink, and a desired design or the like is represented by one color or multiple colors.
The thickness of the design print layer 6 is not particularly limited, and is, for example, 0.2 μm to 10 μm, and preferably 0.4 μm to 5 μm.
In the illustrated example, the edge of the design print layer 6 exactly coincides with the edge of the fluorescent layer 5, but actually, the design print layer 6 and the fluorescent layer 5 partially overlap. Please keep in mind. For example, when the design printing layer 6 is formed after forming the fluorescent layer 5 as a production procedure, the design printing layer 6 is provided so as to overlap the back surface of the upper edge portion of the fluorescent layer 5. In addition, the design printing layer 6 may be provided in the area | region where the fluorescent layer 5 is not provided in the back surface side of the film 3, and the whole back surface of the fluorescent layer 5, or a part of the back surface (not shown). .

The cylindrical label 1 of the present invention is provided in the form of a cylindrical label elongated body, and the elongated body is mounted on an adherend using a labeler (label mounting apparatus) as in the conventional case.
Briefly, a roll obtained by winding a long cylindrical label body folded in a flat shape into a roll is loaded into the start end of the labeler. The long cylindrical label body is pulled out in the longitudinal direction by a labeler, and sent to the labeler line. Before the adherend, the long body is cut into a predetermined length to form one cylindrical label 1. The cylindrical label 1 is opened and fitted on the adherend. When the cylindrical label 1 is a heat-shrinkable cylindrical label, the outermost back surface (the innermost surface) of the label 1 is attached to the adherend by heating the tubular label 1 after being externally fitted to the adherend. It touches the entire outer surface or a part of the outer surface. When the cylindrical label 1 is a self-expandable cylindrical label, the outermost surface (the innermost surface) of the label 1 is covered by releasing the expanded diameter of the cylindrical label 1 after being externally fitted to the adherend. It touches the entire outer surface or a part of the outer surface of the kimono. When the cylindrical label 1 is in contact with the adherend, a label package in which the cylindrical label is attached to the adherend is obtained.
The adherend is not particularly limited, and may be transparent or non-transparent. Examples of the adherend include a transparent or non-transparent container, a transparent or non-transparent article, and the like. Examples of the transparent container include a transparent resin container such as a polyethylene terephthalate container. As a non-transparent container or article, a resin container or article having a desired color such as white or metal color (silver) or the like, a metal container or article colored in a desired color such as white on the outer surface, or the appearance Examples thereof include a metal container exhibiting a metal color or a metal article. Preferably, the cylindrical label of the present invention is attached to a transparent resin container, a resin container having a white or metallic appearance, a metal container having a white or metallic appearance, and more preferably a white appearance. It is attached to a resin container presenting or a metal container presenting white.
FIG. 7 is an example of the label package 10. The label package 10 includes a container 9 as an adherend and the cylindrical label 1 attached to the container 9. In the illustrated example of the label wrapping body 10, the entire rearmost surface (innermost inner surface) of the cylindrical label 1 is in contact with the outer surface of the container 9. For example, when the outer surface of the container 9 has an uneven portion ( The bottom surface of the cylindrical label 1 is not in contact with the concave portion. In this case, the cylindrical label 1 corresponding to the region in which the fluorescent layer 5 is provided is aligned so that the outermost surface of the container 9 is in contact with the outer surface (such as a convex portion), and the cylindrical label 1 is attached to the container. It is preferable to do. This is because the fluorescent feeling produced by the fluorescent layer 5 is improved by contacting the container. In particular, the fluorescent feeling of the label packaging body in which the cylindrical label 1 is mounted so as to come into contact with a container having an external appearance white or metallic color or a transparent container as described above is improved.

In the cylindrical label 1 of the present invention, since the fluorescent layer 5 is provided on the back surface of the film 3, the cylindrical label long body is sent on the line or after being attached to the adherend (that is, It is possible to prevent the fluorescent color material of the fluorescent layer 5 from falling off during storage and transportation after the label package is formed.
Furthermore, since the fluorescent label 5 is laminated | stacked on the back surface of the transparent resin layer 4, the cylindrical label 1 of this invention shows sufficient fluorescence when the cylindrical label 1 is seen from the outer side. In particular, when the cylindrical label 1 of the present invention is attached to a transparent adherend, it appears more prominently. Although the reason is not clearly understood, it is presumed that the fluorescence feeling is improved by the light being refracted and reflected at the interface between the film 3 and the transparent resin layer 4.

  The cylindrical label of the present invention is not limited to the above embodiment, and various design changes can be made within the intended scope of the present invention. Hereinafter, other embodiments of the cylindrical label of the present invention will be described, but the description of the same configuration as the above embodiment will be omitted (assuming that it has been described), and terms and symbols will be used. .

Although the cylindrical label 1 of the said embodiment has the transparent resin layer 4 provided in the back surface of the film 3, the fluorescent layer 5 is provided in the back surface of the transparent resin layer 4, and also the design printing layer 6 is provided. However, the present invention is not limited to this, and layers other than these layers may be provided.
For example, as shown in FIG. 8, a back surface layer 7 may be provided on the back surface of the fluorescent layer 5.
FIG. 8 is an enlarged cross-sectional view in which a cylindrical label according to another embodiment is cut at the same position as the line IV-IV in FIG. 2 and an intermediate portion thereof is omitted.
The back surface layer 7 is provided on the back surface of the fluorescent layer 5 and the back surface of the design printing layer 6 as shown in the figure. However, the back surface layer 7 may be provided only on the back surface of the fluorescent layer 5 or only on the back surface of the design printing layer 6, or one of the entire back surface of the fluorescent layer 5 and the back surface of the design printing layer 6. Or a part of the back surface of the fluorescent layer 5 and the entire back surface of the design printing layer 6, or a part of the back surface of the fluorescent layer 5 and a part of the back surface of the design printing layer 6 (see FIG. Not shown). The back layer 7 is a region where the fluorescent layer 5 is not provided, a back surface of the film 3, a back surface of the transparent resin layer 4, a back surface of the design print layer 6, or a region where the design print layer 6 is not provided. The back surface of the film 3 or the back surface of the transparent resin layer 4 may be provided.
Examples of the back layer 7 include a transparent printing layer, a colored printing layer, and an adhesive layer. The back layer 7 is composed of at least one layer selected from a transparent printing layer, a colored printing layer, and an adhesive layer, and is preferably one layer selected from these layers.
Examples of the transparent printing layer include a printing layer on which the same forming material as that of the transparent resin layer 4 is printed. For example, the transparent printing layer is a transparent printing layer formed from the medium ink or the pearl medium ink. Examples of the colored print layer include white ink, silver ink, and print layers (white print layer, silver print layer, etc.) printed with color inks such as other color inks such as yellow and red. The colored print layer is preferably a white print layer or a silver print layer, and more preferably a white print layer, because it reflects more light and improves fluorescence. The white printed layer preferably contains 60% by mass to 80% by mass of titanium oxide and 15% by mass to 40% by mass of binder resin in the entire layer. Examples of the adhesive layer include a transparent coating layer coated with a heat-sensitive adhesive.
Although the thickness of the said back surface layer 7 is not specifically limited, For example, they are 0.2 micrometer-20 micrometers, Preferably they are 0.4 micrometer-15 micrometers.
In addition, although not shown, a transparent surface layer (preferably a transparent printing layer) may be provided on the surface of the film 3.

The adhesive layer is used to adhere to an adherend. The cylindrical label 1 provided with an adhesive layer as the back layer 7 is adhered to the outer surface of the adherend by the adhesive layer. When the cylindrical label 1 is attached to the adherend only by the thermal contraction force or self-stretching force of the cylindrical label 1, the label 1 may be rotated or displaced, but it should be adhered with an adhesive layer. Therefore, the rotation can be prevented.
When a layer other than the adhesive layer is used as the back layer 7, the tubular label 1 is covered so that the outermost surface (the innermost surface) of the tubular label 1 is in contact with the entire outer surface of the adherend or a part of the outer surface. Mounted on the kimono.

  In addition, although the said embodiment demonstrated centering on the aspect (form formed in the cylinder shape before fitting to a to-be-adhered body) of the cylindrical label previously formed in the cylinder shape, the cylindrical label of this invention is The present invention is not limited to this mode, and may be a strip-shaped label base material before being attached to the adherend, and may be a cylindrical shape when attached to the adherend. The cylindrical label of such an embodiment is also called a wound cylindrical label, and the back surface of one side end of the label base material is partially bonded to the adherend, and the label base material is wound around the container, It is a cylindrical label formed into a cylindrical shape by bonding the back surface of the other side end of the label base material to the surface of one side end.

  EXAMPLES Hereinafter, the Example and comparative example of this invention are shown and this invention is explained in full detail. However, the present invention is not limited to the following examples.

[Materials used]
Film (1): Stretched polyethylene terephthalate heat-shrinkable film having a thickness of 40 μm. Trade name “LX-18S” manufactured by Mitsubishi Plastics, Inc.
Film (2): a laminated heat-shrinkable film having a thickness of 45 μm of polyethylene terephthalate resin layer (back side) / polypropylene resin layer (middle) / polyethylene terephthalate resin layer (front side).
Medium ink: A transparent ink in which a urethane resin is dissolved in a solvent. Trade name “NT Hyramic R Medium” manufactured by Dainichi Seika Kogyo Co., Ltd. This medium ink contains 95% by mass or more of a urethane-based resin with 100% by mass of the entire nonvolatile components in the ink.
Pearl-containing ink: A transparent ink in which a urethane-based resin and a pearl pigment (material: mica (trade name “Iriodin 123” manufactured by Merck & Co., Inc.)) are dissolved in a solvent. The total amount of the components is 100% by mass, and about 80% by mass of urethane resin and about 15% by mass of pearl pigment are contained.
Fluorescent ink: In the solvent, the medium ink (trade name “NT Hiramic R Medium” manufactured by Dainichi Seika Kogyo Co., Ltd.), fluorescent color material (trade name “Shinloi Color FA-207” manufactured by Sinloi Co., Ltd.) And an ink in which the dispersant is dissolved or dispersed. This fluorescent ink contains about 55% by mass of a urethane-based resin and about 40% by mass of a fluorescent color material, based on 100% by mass of the entire nonvolatile components in the ink.
White ink: A white ink in which a urethane resin and titanium oxide are dissolved in a solvent. The product name “NT Hiramic HC White” manufactured by Dainichi Seika Kogyo Co., Ltd. This white ink contains about 20% by mass of urethane-based resin and about 75% by mass of titanium oxide based on 100% by mass of the entire nonvolatile components in the ink.
Adhesive: Transparent ethylene-vinyl acetate (EVA) adhesive. Product name “Seikadine S Sealant NT” manufactured by Dainichi Seika Kogyo Co., Ltd.

[Example 1]
A transparent resin layer having a thickness of 0.5 μm (including 95% by mass or more of a urethane resin throughout the entire layer) is formed by printing a medium ink on the entire back surface of the film (1) by a gravure printing method. did. A fluorescent ink is printed on the back surface of the transparent resin layer by a gravure printing method to obtain a fluorescent layer having a thickness of 0.5 μm (a urethane resin is about 55% by mass and a fluorescent color material is about 40% over the entire layer). %) Was formed.
Thus, the label base material of Example 1 was produced.

[Example 2]
A white colored printing layer (back surface layer) having a thickness of 1.2 μm was formed on the back surface of the fluorescent layer of the label base material of Example 1 by further printing white ink by a gravure printing method.

[Example 3]
A transparent printing layer (back surface layer) having a thickness of 0.5 μm was formed on the back surface of the fluorescent layer of the label base material of Example 1 by further printing a medium ink by a gravure printing method.

[Example 4]
By printing a pearl medium-containing ink on the entire back surface of the film (1) by a gravure printing method, a transparent resin layer having a thickness of 0.5 μm (approximately 80% by mass of urethane resin throughout the layer, pearl About 15% by weight of pigment). A fluorescent ink is printed on the back surface of the transparent resin layer by a gravure printing method, so that a fluorescent layer having a thickness of 0.5 μm (a urethane resin is approximately 20% by mass and a fluorescent color material is approximately 75% by mass throughout the layer). %) Was formed. A transparent printing layer (back surface layer) having a thickness of 0.5 μm was formed on the back surface of the phosphor layer by further printing a medium ink by a gravure printing method.

[Example 5]
A label substrate was produced in the same manner as in Example 1 except that the film (2) was used instead of the film (1).

[Example 6]
An adhesive was further applied to the back surface of the fluorescent layer of the label base material of Example 1 by a gravure printing method, and solidified to form a transparent adhesive layer (back surface layer) having a thickness of 12 μm.

[Comparative Example 1]
A fluorescent layer having a thickness of 0.5 μm was formed on the entire back surface of the film (1) by printing the fluorescent ink by a gravure printing method.
Thus, the label base material of Comparative Example 1 was produced.

[Comparative Example 2]
A transparent printing layer having a thickness of 0.5 μm was formed on the back surface of the fluorescent layer of the label base material of Comparative Example 1 by further printing a medium ink by a gravure printing method.

[Measurement of fluorescence intensity]
About each label base material of Example 1 thru | or Example 6 and Comparative Examples 1 and 2, fluorescence intensity | strength (maximum value) using the fluorescence spectrophotometer (trade name "F-4500" by Hitachi, Ltd.). Was measured. Specifically, for Examples 1 to 5 and Comparative Examples 1 and 2, a sample cut from each label base material was placed on a standard white plate with the film surface (film surface) facing up, and from the film surface side. Measured by exposure to light. About Example 6, after activating the adhesive layer of the sample cut out similarly and adhere | attaching on a standard white board, it applied light from the film surface side, and measured. The results are shown in Tables 1 and 2.

[Evaluation]
The label base materials of Examples 1 to 6 had higher fluorescence intensity than the label base materials of Comparative Examples 1 and 2.
Moreover, it is preferable not to provide a back layer from the comparison of Example 1, Example 2, Example 3, and Example 6, or when providing a back layer, the back layer using white ink (white printing layer) ) Is preferred.
Furthermore, it can be seen from the comparison between Example 1 and Example 5 that it is preferable to use a film (particularly a polyester film) that does not include a layer of different materials.

  DESCRIPTION OF SYMBOLS 1 ... Cylindrical label, 2 ... Label base material, 3 ... Film, 4 ... Transparent resin layer, 5 ... Fluorescent layer, 6 ... Design printing layer, 7 ... Back surface layer

Claims (5)

In the cylindrical label which formed the film into a cylindrical shape,
A transparent resin layer is provided on the back side of the film,
A cylindrical label in which a fluorescent layer containing a fluorescent color material is provided on the entire back surface or a part of the back surface of the transparent resin layer.   The cylindrical label according to claim 1, wherein the transparent resin layer is a printed layer containing 70% by mass or more of a transparent resin.   The cylindrical label according to claim 1, wherein the transparent resin layer is a printed layer containing 70% by mass to 95% by mass of a transparent resin and 5% by mass to 25% by mass of a pearl pigment. A back layer is provided on the back surface of the fluorescent layer,
The cylindrical label according to any one of claims 1 to 3, wherein the back layer is at least one selected from a transparent printing layer, a colored printing layer, and an adhesive layer.   A label packaging body in which the cylindrical label according to any one of claims 1 to 4 is attached to an adherend.

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