JP2018054814A - Lamination label - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lamination label capable of simultaneously printing characters on an upper label and a lower label by means of laser irradiation and capable of determining that the characters are printed on the lower label before peeling off the upper label.SOLUTION: Disclosed lamination label 1 is a lamination label, which includes: a lower label 2; and an upper label 3 which is laminated on the surface of the lower label 2 so as to be peeled off. The lamination label 1 has a duplication area X, where simultaneous printing of characters is possible on both of the upper label 3 and the lower label 2 by means of laser irradiation and a visible area Y where the characters are printed on the lower label 2 only and the characters can be seen from the surface side.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a laminated label capable of printing the same characters on two labels using a laser or the like from the front side.

Of the laminated labels in which two labels (the lower label on the back side and the upper label on the front side) are laminated, the laser is irradiated from the front side of the upper label to simultaneously print characters on both the upper label and the lower label. Laminated labels that can be made are known.
For example, in Patent Document 1, laser irradiation in which an upper form and a lower form are detachably bonded, an ultraviolet curable ink layer is provided on the surface of the upper form, and a thermal color former layer is provided on the surface of the lower form. A copy form for performing copy entry is disclosed.
When such a copy form is irradiated with a laser from the surface side of the upper form, the laser-irradiated portion of the ultraviolet curable ink layer is sublimated, whereby characters are printed on the ink layer and the heat of the laser is applied. Acts on the heat-sensitive heat generating agent layer of the lower form, and the same characters printed on the ink layer are printed on the heat-sensitive heat generating agent layer. For this reason, even after the upper form is peeled off, the information shown in the upper form is displayed in the lower form.

  However, in the copy form, the characters printed on the upper form by laser irradiation can be visually recognized, but the characters printed on the lower form cannot be seen unless the upper form is peeled off. For this reason, when an upper form is peeled after laser irradiation, a situation may occur in which characters do not appear on the lower form.

Japanese Patent Laid-Open No. 10-44647

  An object of the present invention is to provide a laminated label capable of simultaneously printing characters on an upper label and a lower label by laser irradiation, and knowing that characters are also printed on the lower label before peeling the upper label. That is.

  The laminated label of the present invention is a laminated label having a lower label and an upper label releasably laminated on the surface of the lower label, and a letter is applied to both the upper label and the lower label by laser irradiation. It has a copy area that can be printed at the same time, and a visual recognition area where characters can be printed only on the lower label and the characters can be seen from the front side.

In a preferred laminated label of the present invention, the upper label has a transparent base material in the copy region, and a color change layer that is provided on the transparent base material and changes color by a laser. The label has a transparent portion including the transparent substrate in the visual recognition area.
In a preferred laminated label of the present invention, the color change layer contains a colorant and a binder resin,
The transparent part has the transparent base material, and a transparent resin layer provided on the transparent base material,
The transparent resin layer contains the same resin as the binder resin of the color change layer as a main component and does not contain a colorant.
The preferable laminated label of this invention is laminated | stacked on the said visual recognition area so that a coating | coated piece can peel.

  In the laminated label of the present invention, it is possible to confirm that characters are printed on the lower label through the visual recognition area after irradiating the copy area and the visual recognition area with laser. In such a laminated label, it can be seen that characters are printed on the lower label of the copy area without peeling off the upper label.

The top view of the lamination | stacking label of 1st Embodiment. FIG. 2 is a partially omitted enlarged cross-sectional view taken along line II-II in FIG. 1. The expanded sectional view cut | disconnected by the III-III line of FIG. (A) is a top view of the laminated label which printed the copy area | region and the visual recognition area, (b) is a top view which shows the state which isolate | separated the laminated label after the said printing into the upper label and the lower label. The partially omitted enlarged sectional view of the laminated label of the second embodiment. The partially omitted enlarged cross-sectional view of the laminated label of the third embodiment. The top view of the lamination label of a 4th embodiment. FIG. 8 is a partially omitted enlarged sectional view taken along line VIII-VIII in FIG. 7. The top view of the lamination | stacking label of the 1st example of 5th Embodiment. The top view of the lamination | stacking label of the 2nd example of 5th Embodiment. The top view of the lamination | stacking label of the 3rd example of 5th Embodiment. FIG. 12 is a partially omitted enlarged sectional view cut along line XII-XII in FIG. 11. The top view of the lamination | stacking label of the 4th example of 5th Embodiment.

The present invention will be described below with reference to the drawings.
In this specification, the “front surface” refers to the surface on the laser irradiation side, and the “back surface” refers to the surface on the opposite side. The “planar shape” refers to a shape viewed from the vertical direction with respect to the surface of the label. Furthermore, the description “PPP to QQQ” means “PPP or more and QQQ or less”. In each figure, it should be noted that the thickness and ratio are different from the actual ones.

[First Embodiment]
FIG. 1 is a plan view of the laminated label of the present invention as viewed from the front side, FIG. 2 is an enlarged cross-sectional view cut in the horizontal direction, and FIG. 3 is an enlarged cross-sectional view cut in the vertical direction. is there. In FIG. 2, an intermediate portion where the layer configuration does not change is omitted.
1 to 3, the laminated label 1 has a laminated body having a lower label 2 and an upper label 3 laminated on the surface of the lower label 2.
In the plane of the laminated label 1, a printing area is provided in which characters can be printed by irradiating a laser from the surface side of the upper label 3. In areas other than the print area, characters set in advance when the laminated label 1 is manufactured are displayed. Hereinafter, the area other than the print area is referred to as “other area”.

The print area includes a copy area X where characters can be simultaneously printed on both the upper label 3 and the lower label 2, a visual recognition area Y where characters can be printed only on the lower label 2, and the characters can be visually recognized from the front side, Consists of.
The print area, the copy area X, and the visual recognition area Y are conceptual, and a display indicating these areas may be clearly shown on the surface of the laminated label 1 (on the surface of the upper label 3). Or, it may not be specified. For example, in FIG. 1, an enclosing line (a chain line in FIG. 1) indicating the copy area X and the viewing area Y is displayed. The display indicating the area may be a character indicating the range of each area in addition to the surrounding lines as described above.
In this specification, “character” includes phonetic characters such as alphabets and hiragana; phonetic characters such as numbers, kanji and pictographs; symbols such as dollar marks and quotation marks;

The formation positions of the copy area X and the viewing area Y are not particularly limited and can be set as appropriate.
In FIG. 1, the visual recognition area Y is arranged at one corner of the laminated label 1 in plan view, and the copy area X is arranged on the side thereof.

Specifically, the upper label 3 includes a base material 31, a design printing layer 34 that displays a design, a color change layer 32 that changes color when irradiated with a laser, and an adhesive layer 33. If necessary, a colored printing layer 35 may be further provided on the back side of the color change layer 32.
The lower label 2 has a base material 21, a color change layer 22 whose color changes when irradiated with a laser, and an adhesive layer 23, and if necessary, a design print layer displaying a design and / or You may further have a colored printing layer.
Hereinafter, when it is necessary to distinguish the members constituting the upper label 3 and the members constituting the lower label 2 in terms of terms, the terminology of the member constituting the upper label 3 is prefixed with “upper” and the lower label "Below" is added to the head of the term of the members constituting 2.

<Color change layer>
The color change layers 22 and 32 (the upper color change layer 32 and the lower color change layer 22) are layers whose colors change by laser irradiation.
The color change layers 22 and 32 (the upper color change layer 32 and the lower color change layer 22) have a desired color before (a) laser irradiation. Or, the periphery of the irradiated portion changes to a color different from the desired color. (B) The layer is colorless and transparent before laser irradiation, but the laser irradiation portion or the surrounding of the irradiation portion is desired by laser irradiation. (C) The layer exhibits the desired color before laser irradiation, but the laser irradiation part or the periphery of the irradiation part disappears due to laser irradiation, or the layer changes to colorless. It is preferable that the layer has any of the properties that the laser irradiation portion or the periphery of the irradiation portion changes to colorless and transparent.

The color change layers 22 and 32 include, for example, a color former and a binder resin that fixes the color former, and various additives as necessary.
The color former is an agent that develops itself by laser irradiation, an agent that develops a color of the binder resin around it by laser irradiation (for example, the binder resin is carbonized and changes to black), and generates heat by laser irradiation. An agent that disappears itself and / or the binder resin existing around it, an agent that changes itself colorless by laser irradiation and / or an agent that changes the binder resin present around the agent colorless, etc. .
Examples of the color former include pigments such as carbon black, black titanium, and pearlescent pigments; dyes such as leuco dyes and dyes having a phthalocyanine skeleton; metal compounds such as copper, tin, cobalt, nickel, and bismuth; metal compounds or Mica or silica coated with a material containing a metal compound; metal salt compounds and the like. These color formers can be used alone or in combination of two or more.

Examples of the binder resin include olefinic resins such as polyethylene, ethylene-α olefin copolymer, polypropylene, ethylene-vinyl acetate copolymer, ionomer resin, ethylene-acrylic acid copolymer, and acids obtained by modifying this with an acid. Thermoplastic resins such as modified olefin resins; vinyl acetate resins; (meth) acrylic resins; vinyl chloride resins; styrene resins; carbonate resins; Further, as the binder resin, a photocurable resin such as an ultraviolet curable resin, a two-component reactive resin, or the like can be used.
As additives, developers, colorants, antioxidants, ultraviolet absorbers, light stabilizers, fillers, flame retardants, and the like can be used. The additive is added in a range that does not impair the color development of the color former.
The content of the color former in the color change layers 22 and 32 can be adjusted within a conventionally known range, and is independently, for example, about 1 wt% to 50 wt%.
The thickness of the color change layers 22 and 32 is not particularly limited, and is independently, for example, 0.7 μm to 30 μm, and preferably 1 μm to 20 μm.

<Constituent material of upper label>
As described above, the upper label 3 includes the upper base material 31, the upper design print layer 34, the upper color change layer 32, and the upper adhesive layer 33, and if necessary, the upper colored print layer 35. May further be included.
The planar view shape of the upper base material 31 is not particularly limited, and examples thereof include a substantially rectangular shape, a substantially square shape, a substantially circular shape, a substantially elliptical shape, a substantially triangular shape, a substantially hexagonal shape, and the like. In the illustrated example, the upper base material 31 has a substantially rectangular shape in plan view. In the present invention, “substantially” in the shape in plan view means a shape allowed in the technical field to which the present invention belongs. The “substantially” in the shape of a substantially rectangular shape, a substantially square shape, a substantially triangular shape, and a substantially polygonal shape in plan view includes, for example, a shape in which a corner is chamfered, a shape in which a part of a side is slightly inflated or recessed, and a side Includes a slightly curved shape. Further, the “substantially” of the substantially circular shape and the substantially elliptical shape in a plan view includes, for example, a shape in which a part of the circumference is slightly inflated or depressed, and a shape in which a part of the circumference is slightly straight or oblique. It is.

The upper substrate 31 is a substrate having laser transparency.
The upper substrate 31 in the present embodiment is not particularly limited on the condition that it is transparent. As such an upper substrate 31, for example, a transparent synthetic resin film is used. The material of the synthetic resin film is not particularly limited. Polyester resins such as polyethylene terephthalate and polylactic acid; Olefin resins such as polypropylene and cyclic olefin; Styrene resins such as polystyrene and styrene-butadiene copolymer; Polyamide Resin; 1 type chosen from thermoplastic resins, such as vinyl chloride system resin, or 2 or more types of mixtures, etc. are mentioned. The synthetic resin film may be composed of one resin layer, or may be composed of a plurality of different or different types of resin layers. The upper base material 31 may have heat shrinkability (for example, a property of being heat-shrinkable when heated to 80 ° C. to 120 ° C.), but is not substantially heat-shrinkable. Is preferred. Note that “substantially not heat-shrinkable” means that it does not heat-shrink to a significant extent, and includes cases where heat-shrink slightly at 80 ° C. to 120 ° C. and cases where heat-shrink slightly.

The thickness of the upper base material 31 is not specifically limited, For example, they are 20 micrometers-120 micrometers, Preferably, they are 30 micrometers-100 micrometers.
In addition, in this specification, transparent arrange | positions what printed arbitrary numbers (size 12 points) with black ink on the white paper in the location 1cm away from the back surface on the back surface side of a certain member, The state which can see the number from the surface side through the said member is said. As the transparent index, for example, the total light transmittance is 70% or more, preferably 80% or more, and more preferably 90% or more. However, the total light transmittance is the measurement target that is transparent (when the measurement target is a transparent base material, the transparent base material itself is the measurement target. When the measurement target is a transparent layer, A value obtained by measuring a transparent base material provided with the above transparent layer by a measuring method in accordance with JIS K 7361 (a test method for the total light transmittance of a plastic-transparent material).

The upper design print layer 34 is a print layer in which a desired character such as a picture or an explanatory note is expressed using a known printing ink.
The upper colored print layer 35 is a non-patterned opaque print layer in which one color or two or more colors are separately applied, and is preferably a non-patterned one-color opaque print layer. For example, the upper colored print layer 35 may be a non-pattern white print layer, a non-pattern silver print layer, a non-pattern black print layer, or the like. Although the thickness of the upper coloring printing layer 35 is not specifically limited, For example, they are 0.5 micrometer-5 micrometers.

The upper color change layer 32 may be any of the types (a) to (c).
For example, the upper color changing layer 32 includes a pigment such as carbon black as a color former and a binder resin, and various additives as necessary. The upper color change layer 32 exhibits a desired color (black in the case of carbon black), and the laser irradiation portion disappears and becomes colorless by laser irradiation. When such an upper color change layer 32 is used, the back side of the upper color change layer 32 has a color other than black so that characters appearing on the upper color change layer 32 can be visually recognized by laser irradiation. For example, the back side of the upper color changing layer 32 is white, yellow, colorless and transparent. When the upper colored printing layer 35 is provided on the back side of the upper color changing layer 32 as in the illustrated example, as the upper colored printing layer 35, a printing layer of a color other than black (for example, titanium oxide or the like) An unpatterned white print layer containing a white pigment) is used.

The upper adhesive layer 33 is a layer for adhering the upper label 3 to the surface of the lower label 2 in a peelable manner. In the present specification, “peelable” means that two bonded members can be easily peeled off with the force of a standard adult hand without causing the material to break.
The upper adhesive layer 33 is made of a transparent material so that the lower label 2 can be visually recognized in the visual recognition area Y.
Examples of the upper adhesive layer 33 include a pressure-sensitive adhesive layer and an adhesive layer. The pressure-sensitive adhesive is such that it can be bonded between two adherends at room temperature, and can be peeled off from another adherend by hand. It has strength and can be re-applied after peeling (having adhesiveness even after peeling). The adhesive has an adhesive force that can be bonded between two adherends, and that one adherend can be peeled off from the other adherend by hand. After peeling, it means something that cannot be reapplied. As said adhesive, a well-known pressure sensitive adhesive, a heat sensitive adhesive, etc. can be used. The pressure-sensitive adhesive is an adhesive that exhibits adhesiveness at room temperature and maintains its adhesive strength. The heat-sensitive adhesive is an adhesive that does not exhibit adhesiveness at the beginning, but generates an adhesive force when heated and the adhesive force is maintained at room temperature. Further, as the adhesive, a heat sensitive adhesive, an ultraviolet curable adhesive, or the like can be used.
As the upper adhesive layer 33, it is preferable to use a pressure-sensitive adhesive layer.
The thickness of the upper adhesive layer 33 is not particularly limited, and is, for example, 10 μm to 50 μm, preferably 15 μm to 30 μm.

<Constituent material of lower label>
As described above, the lower label 2 includes the lower base material 21, the lower color change layer 22, and the lower adhesive layer 23, and further includes a lower design print layer and a lower colored print layer as necessary. You may do it.
The planar view shape of the lower base material 21 is not particularly limited, and examples thereof include a substantially rectangular shape, a substantially square shape, a substantially circular shape, a substantially elliptical shape, a substantially triangular shape, a substantially hexagonal shape, and the like. In the illustrated example, the lower base material 21 has a substantially rectangular shape in plan view. The lower base 21 may be the same shape and size as the upper base 31 or may be larger than the upper base 31. In the illustrated example, the lower substrate 21 and the upper substrate 31 have the same shape and size.
The lower substrate 21 may be either a transparent substrate or an opaque substrate. As the lower substrate 21, for example, a transparent synthetic resin film, an opaque synthetic resin film, a paper such as synthetic paper, plain paper, or the like is used. Examples of the synthetic resin film include those exemplified for the upper base material 31. Moreover, it is preferable that the lower base material 21 is also a base material which does not have heat shrinkability substantially. In the present embodiment, synthetic paper is used as the lower base material 21.
The thickness of the lower base material 21 is not specifically limited, For example, it is 20 micrometers-300 micrometers, Preferably, it is 30 micrometers-200 micrometers.

The under color change layer 22 may be any of the types (a) to (c).
For example, the undercolor changing layer 22 includes a dye such as a leuco dye as a color former, a developer, and a binder resin, and various additives as necessary. The undercolor change layer 22 is usually colorless and transparent (in addition, a desired color is exhibited when a colorant is included), and a laser irradiation portion of the undercolor change layer 22 has a desired color (including a colorant). In the case of the color, the color changes to a color different from the color of the colorant.
For example, as the lower label 2, thermal paper that develops color by the heat of laser irradiation is used. In this case, the thermal paper corresponds to the lower base material 21 and the lower color change layer 22.

As the lower design print layer and the lower colored print layer, those exemplified in the upper design print layer 34 and the upper colored print layer 35 are used.
The lower adhesive layer 23 is a layer for adhering the laminated label 1 (lower label 2) to an adherend such as a medical container.
The lower adhesive layer 23 may be transparent or opaque.
Examples of the lower adhesive layer 23 include a pressure-sensitive adhesive layer and an adhesive layer. As the lower adhesive layer 23, it is preferable to use a pressure-sensitive adhesive layer or a heat-sensitive adhesive layer. When a pressure-sensitive adhesive layer is used as the lower adhesive layer 23, the laminated label 1 is supplied with the lower adhesive layer 23 temporarily attached onto a release paper.
The thickness of the lower adhesive layer 23 is not particularly limited, and is, for example, 10 μm to 50 μm, preferably 15 μm to 30 μm.

<Layer structure of upper label and lower label>
In the upper label 3, the upper color changing layer 32 is provided at least in the copy area X except for the visual recognition area Y. The upper color change layer 32 may be provided only in the copy area X on condition that it does not exist in the viewing area Y, or may be provided in all or part of the copy area X and other areas. In the illustrated example, the upper color change layer 32 is provided only in the copy region X. The upper color change layer 32 may be provided on either the back surface side or the front surface side of the upper base material 31. In the illustrated example, the upper color changing layer 32 is laminated on the surface side of the upper base material 31. In the upper label 3, the upper colored printing layer 35 may not be provided. However, since the characters printed on the upper color changing layer 32 by laser irradiation are easy to see, the upper colored printing layer is formed on the upper substrate 31. 35 is preferably provided. In this case, the upper colored printing layer 35 is provided except for the visual recognition area Y. For example, the upper colored printing layer 35 may be provided only on the back side of the upper color changing layer 32, and is provided on the entire copy area X and other areas (the entire upper substrate 31 excluding the viewing area Y). Or may be provided in a part of the copy area X and other areas. In the illustrated example, the upper colored printing layer 35 is provided in a part of the copy area X and other areas. The upper colored printing layer 35 may be provided on the back surface and / or the front surface of the upper base material 31. In the illustrated example, an upper colored printing layer 35 is laminated on the surface of the upper substrate 31. Accordingly, in the copy region X of the upper label 3, the upper colored printing layer 35 is laminated on the surface of the upper base material 31, and the upper color changing layer 32 is laminated on the surface of the upper colored printing layer 35. On the other hand, the visual recognition area Y of the upper label 3 does not have the upper color changing layer 32 and the upper colored printing layer 35 and is a transparent portion including the transparent upper substrate 31.

The upper adhesive layer 33 may be provided on the entire back surface of the upper base material 31 or may be provided on a part of the back surface of the upper base material 31. In the illustrated example, the upper adhesive layer 33 is provided on the entire back surface of the upper base material 31. Further, the concealing layer 41 may be provided on the entire back surface of the upper adhesive layer 33. The concealing layer 41 is a layer provided to weaken the adhesive force or adhesive force of the upper adhesive layer 33. As the masking layer 41, a known resin layer can be used. For example, the masking layer 41 can be formed using an ultraviolet curable resin or the like. By providing the concealing layer 41 on the back surface of the upper adhesive layer 33 having a relatively strong adhesive force or adhesive force, the upper label 3 is bonded to the surface of the lower label 2 with a peelable adhesive strength.
In addition, you may provide a peeling layer (not shown) in the outermost surface of the lower label 2, without providing the concealment layer 41 in the back surface of the upper adhesive layer 33. FIG. The release layer is a layer provided to make it difficult to attach the back surface of the upper adhesive layer 33. The release layer can be typically formed by applying a coating liquid containing silicone onto the surface of the lower label 2.
In order to make the lower label 2 visible in the visual recognition area Y, the concealing layer 41 and the release layer are transparent.

On the other hand, in the lower label 2, the lower color change layer 22 is provided at least in the copy area X and the viewing area Y. In the illustrated example, the lower color change layer 22 is laminated on the entire lower base material 21. The lower color change layer 22 may be provided on either the back surface or the surface of the lower base material 21, but when the opaque lower base material 21 is used, the lower color change layer 22 is provided on the surface side of the lower base material 21. Is laminated.
In the lower label 2, a lower design print layer may be provided in another region as necessary. The lower design print layer may be provided in the copy area X or the viewing area Y. However, when the lower design print layer is provided in that area, the lower design print layer is printed so as not to overlap the characters printed by laser irradiation. It is preferable to provide a layer. Moreover, you may provide an undercolored printing layer as needed. In particular, when the lower color change layer 22 is laminated on the entire lower substrate 21, the lower color printing layer is provided on the surface area of the lower color change layer 22 excluding the copy area X and the viewing area Y, so that the lower color It is possible to prevent the discoloration color of the change layer 22 over time. For example, when white thermal paper is used as the lower substrate 21, it is preferable to provide a patternless white print layer containing a white pigment such as titanium oxide as the lower colored print layer. The lower design print layer and the lower colored print layer are not shown.
Further, the lower adhesive layer 23 may be provided on the entire back surface of the lower base material 21, or may be provided on a part of the back surface of the lower base material 21. In the illustrated example, the lower adhesive layer 23 is provided on the entire back surface of the lower base material 21. Similarly to the upper adhesive layer 33, the lower adhesive layer 23 may be provided with a concealing layer on the back surface of the lower adhesive layer 23 as needed in order to adjust the adhesive force or adhesive force (of the lower adhesive layer 23). (The hiding layer is not shown).

<Use of laminated labels>
The laminated label 1 of the present invention can be used for various applications.
The laminated label 1 of the present invention can be typically used as a medical label, a product label attached to a beverage container or the like, a campaign label, a management label for product inventory management, a tag label, or the like.
For example, the laminated label 1 of the present invention can be used as a medical label by attaching it to a medical container such as an ampoule or a vial through the lower adhesive layer 23.
The laminated label 1 is used by printing a desired character by irradiating a laser on a print area (copy area X and viewing area Y). Normally, the laminated label 1 before being attached to a container or the like is printed by applying a laser, but the laminated label 1 attached to a container or the like may be printed.
The desired characters to be printed by the laser are not particularly limited, for example, characters relating to traceability such as date of manufacture, expiration date, production code, characters representing a prize application ID when a prize campaign is being conducted, product management Personal information such as a number, characters representing a trap such as Atari or Loss, an address, and the like. When the laminated label 1 is used as a medical label, examples of the desired characters include a patient number, a medication date, a drug number, and a pharmaceutical code (GS1 code, etc.).

The laminated label 1 of the present invention can print the same patient number, drug number, etc. on the upper label 3 and the lower label 2 in the copy area X.
Furthermore, since the adhesive layers 33 and 23 are provided on the upper label 3 and the lower label 2, the upper label 3 after printing can be peeled off and attached to an ampoule, a syringe, other medical devices, or the like. Further, the lower label 2 can be attached to a medical chart or the like. By comparing the print (information such as patient number) on the upper label 3 affixed to the medical device with the same print (information such as patient number) copied in the copy area X of the lower label 2, the user The (medical worker) can definitely do medication. The lower label 2 may be affixed to a medical instrument and the upper label 3 may be affixed to a medical record or the like. Alternatively, the lower label 2 may be affixed to a medical chart and the upper label 3 is medical equipment such as a medicine shelf or a bed. It may be used by sticking to the above. The upper label 3 and the lower label 2 can be used by being attached to various items.

The laser is not particularly limited, and a YAG laser beam (yttrium, aluminum, garnet laser beam, wavelength = 1,064 nm), a YVO ₄ laser beam (yttrium vanadate laser beam, wavelength = 1,064 nm), or the like can be used. Laser irradiation conditions are set as appropriate. For example, the laser frequency is 20 kHz to 100 kHz.
The copy area X and the viewing area Y of the laminated label 1 are irradiated with laser. Since the upper color change layer 32 of the upper label 3 and the lower color change layer 22 of the lower label 2 overlap each other in the copy area X, desired characters are printed on the upper color change layer 32 by laser irradiation. At the same time, the same character as the character is printed on the lower color change layer 22. On the other hand, since the lower color change layer 22 is provided on the lower label 2 (without the upper color change layer 32) in the viewing area Y, desired characters are printed on the lower color change layer 22 by laser irradiation. Is done.
The printing of the lower color change layer 22 is not particularly limited as long as it can be estimated that a desired character is printed on the lower label 2 in the copy area X by laser irradiation. For example, only the user or the label manufacturer can identify. Possible symbols and symbols (for example, dots) may be used.

FIG. 4A shows the laminated label 1 on which the printing area X and the viewing area Y are printed by laser from the surface side of the upper label 3.
For convenience of illustration, a number is taken as an example of the character, and “123456789” is printed in the copy area X and “0” is printed in the viewing area Y.
FIG. 4B shows a state where the upper label 3 is separated from the lower label 2 and separated from the laminated label 1 on which the copy area X and the viewing area Y are printed.
In the plan views of FIGS. 1 and 4, the design print layer design and the colored print layer are not shown.

Since the upper label 3 at least in the visual recognition area Y of the upper label 3 is transparent, the surface of the lower label 2 can be seen through from the surface side of the laminated label 1. That is, since the visual recognition area Y of the upper label 3 is a transparent part, the characters printed on the visual recognition area Y of the lower label 2 through the transparent part are removed from the surface side of the laminated label 1 without peeling the upper label 3. It can be visually recognized (see FIG. 4A).
The laminated label 1 of the present invention can confirm the characters printed on the lower label 2 in the visual recognition area Y after laser irradiation. For this reason, even if the upper label 3 is not peeled off, it can be estimated that a desired character is printed on the lower label 2 in the copy area X by laser irradiation, and the character is printed on the lower label 2 in the copy area X. I can understand that.

The present invention is not limited to the first embodiment and can be variously modified.
Hereinafter, various other embodiments of the present invention will be described, but the description of the same configurations and effects as those of the first embodiment will be omitted (assuming that the description has been made), and the terms and symbols will be used as they are.

[Second Embodiment]
As shown in FIG. 5, the laminated label 1 of the second embodiment is provided with a transparent resin layer 5 at a transparent portion of the upper label 3. In addition, since the top view of the laminated label 1 of 2nd Embodiment is the same as that of FIG. 1, it is abbreviate | omitting and FIG. 5 is the same as the II-II line of FIG. It is the partially abbreviated enlarged sectional view cut.

The transparent resin layer 5 does not contain a colorant. The transparent resin layer 5 may be provided on the back surface and / or the surface of the upper base material 31 in the transparent portion. In the illustrated example, the transparent resin layer 5 is provided on the surface of the upper substrate 31. The transparent resin layer 5 may be one layer or two or more layers.
Preferably, the transparent resin layer 5 is provided corresponding to the upper color changing layer 32 and the upper colored printing layer 35 provided on the upper base material 31 of the copy region X. For example, a transparent resin layer 5 (transparent resin layer 5 corresponding to the upper color change layer 32, hereinafter referred to as a first transparent resin layer 51) is provided in the surface direction of the upper substrate 31 following the upper color change layer 32. It is done. Further, when the upper colored printing layer 35 is provided, the transparent resin layer 5 (transparent resin corresponding to the upper colored printing layer 35) is provided in the surface direction of the upper base material 31 following the upper colored printing layer 35. Layer 5. Hereinafter, the second transparent resin layer 52 is provided.

  The first transparent resin layer 51 is a transparent resin layer that does not contain a colorant, and the resin component is not particularly limited. Preferably, the first transparent resin layer 51 includes the same resin as the binder resin included in the upper color change layer 32 as a main component. The thickness of the first transparent resin layer 51 is not particularly limited, but is preferably the same thickness as the upper color change layer 32.

  The 2nd transparent resin layer 52 is a transparent resin layer which does not contain a coloring agent, The resin component is not specifically limited. Preferably, the second transparent resin layer 52 contains the same resin as the binder resin contained in the upper colored printing layer 35 as a main component. Further, the thickness of the second transparent resin layer 52 is not particularly limited, but is preferably the same thickness as the upper colored printing layer 35.

In the present embodiment, the copy area X of the upper label 3 includes a transparent upper base material 31, an upper color changing layer 32, and an upper colored printing layer 35, and the upper label 3 in the visual recognition area Y is a transparent upper base material 31. The first transparent resin layer 51 and the second transparent resin layer 52 are included. For this reason, the layer structure of the copy area X of the upper label 3 and the layer structure of the viewing area Y are approximated (that is, the printing conditions by the laser are approximated), and by confirming the printing on the viewing area Y by the laser irradiation, It is assumed that the character is printed on the lower label 2 of the copy area X, and the character is printed on the lower label 2 of the copy area X more accurately. In particular, the first transparent resin layer 51 contains the same resin as the binder resin contained in the upper color changing layer 32 as a main component, and the second transparent resin layer 52 contains the same resin as the binder resin contained in the upper colored printing layer 35. When it is included as a component, the composition of the upper color changing layer 32 and the first transparent resin layer 51 is approximated, and the composition of the upper colored printing layer 35 and the second transparent resin layer 52 is approximated. It can be understood more accurately that characters are printed on the lower label 2.
When the binder resin contained in the upper color changing layer 32 and the binder resin contained in the upper colored printing layer 35 contain the same resin as a main component, the first transparent resin layer 51 and the second transparent resin layer 52 May be a resin layer of the same material. When the first transparent resin layer 51 and the second transparent resin layer 52 are resin layers made of the same material, the two layers may be overlapped and laminated, but the thickness of the upper color changing layer 32 and the upper colored print layer 35 You may comprise the 1st transparent resin layer 51 and the 2nd transparent resin layer 52 by providing the transparent resin layer of thickness substantially the same as the total thickness only by one layer.

[Third Embodiment]
As shown in FIG. 6, the laminated label 1 of the third embodiment exposes the surface of the lower label 2 in the visual recognition area Y. In addition, the laminated label 1 of 3rd Embodiment also abbreviate | omits a top view and FIG.
In the present embodiment, the visual recognition area Y is a window portion 6 that does not have the upper label 3, and thus the surface of the lower label 2 is exposed in the visual recognition area Y. In other words, a portion of the upper label 3 corresponding to the visual recognition area Y is cut out to generate the window portion 6.
Similarly to the first embodiment, the laminated label 1 of the present embodiment also performs printing by irradiating the copy area X and the viewing area Y with a laser, and prints characters printed in the viewing area Y of the lower label 2 on the laminated label. 1 is visible from the surface side.

[Fourth Embodiment]
As shown in FIGS. 7 and 8, the laminated label 1 of the fourth embodiment has a covering piece 7 laminated in the viewing area Y.
The covering piece 7 is, for example, laminated on the surface of the lower label 2 in the visual recognition area Y so as to be peelable. The covering piece 7 is independent from the upper label 3 and can be peeled from the lower label 2 independently of the upper label 3.

The covering piece 7 includes a base material 71 having laser transparency and an adhesive layer 72 provided on the back surface of the base material 71.
The base material 71 of the covering piece 7 is not particularly limited as long as it has laser transparency, and for example, a synthetic resin film, synthetic paper, paper, or the like can be used. The substrate 71 of the covering piece 7 may be either transparent or opaque.
As the adhesive layer 72 of the covering piece 7, for example, a pressure-sensitive adhesive layer or an adhesive layer similar to the upper adhesive layer 33 can be used. If necessary, a concealing layer 73 is provided on the back surface of the covering piece 7. Alternatively (or a release layer may be provided on the surface of the lower substrate 21 on which the covering pieces are laminated).

Similarly to the first embodiment, the laminated label 1 of the present embodiment can be confirmed from the surface side by seeing through the transparent covering piece 7 the characters of the lower label 2 printed in the visual recognition area Y after laser irradiation. Further, when the covering piece 7 is opaque, the characters of the lower label 2 printed in the visual recognition area Y are removed from the surface by peeling off the covering piece 7 after laser irradiation without removing the upper label 3. It can be confirmed from the side.
In the example shown in FIG. 8, the covering piece 7 is provided directly on the surface of the lower label 2. For example, the covering piece 7 is formed on the surface of the transparent portion of the upper label 3 shown in the first embodiment. May be laminated in a peelable manner (not shown).

[Fifth Embodiment]
In the above embodiments, the case where the upper label 3 and the lower label 2 have the same shape and the same size is illustrated. For example, as illustrated in FIG. 9, even if the upper label 3 has a smaller area than the lower label 2. Good.
Further, as shown in FIG. 9, a knob 39 may be extended on a part of the upper label 3.

  In each of the above embodiments, a perforation line for dividing the upper label 3 may be provided in the surface of the upper label 3. A part of the upper label 3 is cut off at the perforation line, and it can be used as a child label attached to an arbitrary adherend. For example, as shown in FIG. 10, the perforation line 8 is provided at a boundary portion between the copy area X and another area. Therefore, the child label 9 (a part of the upper label 3 cut out at the perforation line 8) includes the copy area X, and the same character as the character printed in the copy area X of the lower label 2 is the child label 9. Is also printed.

  Further, in the example shown in FIG. 10, the case where the upper label 3 and the lower label 2 are the same shape and the same size is illustrated, but for example, as shown in FIGS. 11 and 12, the upper label 3 is more than the lower label 2. It may be a small area. Moreover, as shown in FIG.11 and FIG.12, the knob | pick part 39 may be extended in a part of upper label 3. As shown in FIG. This knob 39 is extended from one edge 3 a of the upper label 3. Also in this example, a perforation line 8 for dividing the upper label 3 may be provided.

Further, as shown in FIG. 13, the upper label 3 may be divided into a plurality of child labels 9 by forming a plurality of perforation lines 8 on the upper label 3. In the illustrated example, the perforation line 8, the copy area X, and the viewing area Y are provided so that the plurality of child labels 9 include the copying area X and the viewing area Y, respectively.
Thus, the laminated label 1 that can be divided into a plurality of child labels 9 can be used, for example, in a medical application by the following method. The patient number and the like are printed on the copy area X of all the child labels 9, and one child label 9 is attached to the dispensing shelf, and the other child label 9 is attached to a divided medicine container. it can.
In the aspect in which a plurality of child labels 9 are provided, the visual recognition area Y may not be included in the child label 9, and the visual recognition area Y may be provided in a part of the upper label 3 other than the child label 9, or the surface may be A visual recognition area Y may be provided in a part of the exposed lower label 2 (none is shown). Moreover, the copy area X may be provided in at least one child label 9 among the plurality of child labels 9, and the copy area X may not be provided in the remaining child label 9 (not shown).

[Other Embodiments]
As described in the first embodiment, the formation positions of the copy area X and the visual recognition area Y are not particularly limited. In FIG. 1, the visual recognition area Y is arranged at the corner of the laminated label 1 in plan view. However, it is preferable to arrange in the vicinity including the lower edge 1a of the laminated label (see FIG. 1 for the reference numeral 1a) or in the vicinity of the lower edge slightly away from the lower edge 1a. Thus, the laminated label 1 in which the visual recognition area Y is arranged in the vicinity including the lower edge 1a can be attached so that the visual recognition area Y is located in a lower part of a container such as an ampoule or a vial. In the labeled container in which the visual recognition area Y is located at the lower part of the container, since the symbols, symbols, etc. that can be identified only by the user are printed in the visual recognition area Y, the printing is difficult to stand out. Become.
In each said embodiment, although the lower adhesive layer 23 is provided in the back surface of the lower label 2, the laminated label 1 which does not have the lower adhesive layer 23 may be sufficient.
Two or more embodiments selected from the above various embodiments may be appropriately combined, or one or two or more configurations selected from the above various embodiments may be replaced with other embodiments. Good.

1 Laminated Label 2 Lower Label 21 Lower Base Material (Lower Label Base Material)
22 Under color change layer (lower label color change layer)
3 Upper label 31 Upper substrate (Upper label substrate)
32 Upper color change layer (upper label color change layer)
X Copy area Y View area

Claims (4)

A laminated label having a lower label and an upper label that is releasably laminated on the surface of the lower label,
A laminated label having a copy area in which characters can be simultaneously printed on both the upper label and the lower label by laser irradiation, and a visual recognition area in which characters can be printed only on the lower label and the characters can be visually recognized from the surface side. The upper label has a transparent base material in the copying region, and a color change layer that is provided on the transparent base material and changes color by a laser,
The laminated label according to claim 1, wherein the upper label has a transparent portion including the transparent substrate in the visual recognition area. The color change layer includes a colorant and a binder resin;
The transparent part has the transparent base material, and a transparent resin layer provided on the transparent base material,
The laminated label according to claim 2, wherein the transparent resin layer contains the same resin as the binder resin of the color change layer as a main component and does not contain a colorant.   The laminated label according to any one of claims 1 to 3, wherein a covering piece is detachably laminated in the visual recognition area.

Images