JP7089923B2 - Laminate - Google Patents

Description

The present invention relates to a laminate.

In recent years, mail-order sales via the Internet and TV shopping have been widely used, and along with this, there are many distribution forms in which a delivery company delivers a product on behalf of the seller of the product. In such a distribution form, the delivery company packs the delivered goods (commodities) with packing materials such as cardboard and paper boxes, and affixes a delivery label (delivery slip) containing information on the delivery destination on the surface of the packing materials. The delivery is delivered to the purchaser based on this information.

As such a home delivery label, for example, those described in Patent Document 1 are known. This label includes a base material, a pseudo-adhesive layer and an adhesive layer provided in order on one surface of the base material, and the pseudo-adhesive layer is a first layer on the base material side and a first layer on the adhesive layer side. It has a two-layer structure in which two layers are laminated, and the interface between the first layer and the second layer can be peeled off. Then, a receipt stamp column is described on the other side of the base material together with information on the delivery destination, and after receiving confirmation of receipt in the receipt stamp column at the delivery destination of the delivered product, the base material is used as the first layer and the second layer. It peels off at the interface with, and the peeled base material is collected and managed as proof of delivery completion.

In addition, personal information such as the name and address of the purchaser or the recipient of the product is written on the delivery label. For this reason, there is a possibility that damage may occur due to the eavesdropping of personal information presented to the seller or the delivery company, secondary use, or leakage of personal information.

Therefore, when the product is shipped, the delivery label does not display the consignee's address, name, telephone number, etc. on the delivery slip (baggage affixing label), and an information code (for example, QR) for obtaining delivery destination information. It is also proposed to use a delivery slip displaying a code (registered trademark) or a barcode (see, for example, Patent Document 2). The information code is coded for delivery destination information, information regarding the desired delivery date and time (delivery request information), or access information for accessing the delivery request information.

Japanese Unexamined Patent Publication No. 2010-175649 Japanese Unexamined Patent Publication No. 2017-102568

However, if the delivery label after receipt is discarded as it is, personal information or the like may be leaked by analyzing the information code or the like written on the delivery label, which is not sufficient from the viewpoint of security.

An object of the present invention is to provide a laminated body having enhanced security by preventing a third party from reading information such as an information code.

Such an object is achieved by the present invention described in the following (1) to ( 7 ).
(1) The first layer in which the portion to which the first energy is applied develops color, and
The second layer provided on one surface side of the first layer and
A third layer provided adjacent to the first layer on the opposite side of the second layer is provided.
The second layer has a transfer layer which is arranged on the third layer side, contains a substance that emits light by applying a second energy, and is transparent in a visible light environment.
The substance contained in the portion of the second layer that has received the first energy is transferred to the third layer.
The portion of the first layer to which the first energy is applied can be visually recognized in a visible light environment.
A laminate characterized in that the pattern formed by the substance transferred to the third layer cannot be visually recognized in a visible light environment .

(2) The first energy is heat.
The laminate according to (1), wherein the first layer contains a color-developing agent that develops color by heating.

(3) The second energy is ultraviolet rays.
The laminate according to (1) or (2), wherein the substance emits visible light when irradiated with ultraviolet rays.

(4) The second energy is infrared rays.
The laminate according to (1) or (2), wherein the substance emits visible light when irradiated with infrared rays.

(5) The laminate according to any one of (1) to (4), wherein the second layer and the third layer are separable.

(6) The description in any one of (1) to (4), wherein the first layer and the second layer are separable, and the second layer and the third layer are separable. Laminated body.
(7) The laminate according to any one of (1) to (6), wherein the third layer has an adhesive layer arranged on the opposite side of the second layer.

According to the present invention, it is possible to prevent a third party from reading information such as an information code, and to provide a laminated body with enhanced security.

It is a schematic vertical sectional view which shows the suitable 1st Embodiment of the delivery label to which the laminated body of this invention was applied. It is a schematic diagram which shows the state which applied the 1st energy to the delivery label shown in FIG. 1. It is a schematic diagram which shows the state which the home delivery label shown in FIG. 2 is separated at the interface between the 2nd layer and the 3rd layer. It is a schematic plan view which shows an example of a 1st pattern and a 2nd pattern. It is a schematic vertical sectional view which shows the suitable 2nd Embodiment of the delivery label to which the laminated body of this invention was applied. It is a schematic diagram which shows the state which applied the 1st energy to the delivery label shown in FIG. It is a schematic vertical sectional view which shows the suitable 1st Embodiment of the delivery label to which the laminated body of this invention was applied. It is a schematic diagram which shows the state which applied the 1st energy to the delivery label shown in FIG. 7.

[First Embodiment]
Hereinafter, preferred embodiments of the present invention will be described in detail.

[Delivery label]
First, a delivery label to which the laminate of the present invention is applied will be described.

FIG. 1 is a schematic vertical sectional view showing a preferred first embodiment of a delivery label to which the laminate of the present invention is applied. Further, FIG. 2 is a schematic diagram showing a state in which the first energy is applied to the delivery label shown in FIG. 1. FIG. 3 is a schematic diagram showing a state in which the delivery label shown in FIG. 2 is separated at the interface between the second layer and the third layer. FIG. 4 is a schematic plan view showing an example of the first pattern and the second pattern.

The home delivery label 1 (laminated body of the present invention) is provided on one surface side of the first layer 10 and the first layer 10 on which the portion to which the first energy is applied develops color, and by applying the second energy. A second layer 20 containing a luminescent substance and a third layer 30 provided adjacent to the first layer 10 of the second layer 20 are provided, and the first energy of the second layer 20 is received. It is characterized in that the substance contained in the site is transferred to the third layer 30.

As shown in FIG. 2, by applying the first energy (for example, heat H) to such a delivery label 1, the portion is colored and the first pattern 50A representing a predetermined content is transferred to the first layer 10. It is printed. The first energy (for example, heat H) is applied by, for example, bringing the thermal head 100 into contact with the thermal head 100.

Further, the first energy applied to the first layer 10 is further applied to the second layer 20. Then, the substance contained in the portion of the second layer 20 that has received the first energy is transferred to the third layer 30 in the second pattern 50B that is substantially the same as the first pattern 50A.

In the delivery label 1 on which the predetermined contents are printed in this way, the first layer 10 is exposed on the outermost surface, and the first pattern 50A printed on the first layer 10 is in a normal state (visible light environment). It can be visually recognized in (below) (see FIG. 4 (a)).
In such a delivery label 1, the second layer 20 and the third layer 30 are separable.

Then, as shown in FIG. 3, the delivery label 1 is separated between the second layer 20 and the third layer 30.

In the third layer 30, the substance contained in the second layer 20 is transferred from the second layer 20 to the third layer 30 in the second pattern 50B which is substantially the same as the first pattern 50A.

However, as shown in FIG. 4B, the second pattern 50B formed by the substance cannot be visually recognized under a normal state (under a visible light environment).

As shown in FIG. 4C, by applying the second energy (for example, ultraviolet rays or infrared rays) to the third layer 30, the substance emits light, whereby the second pattern 50B can be visually recognized.

As described above, in the home delivery label 1 (laminated body of the present invention), it seems that no predetermined information (contents indicating personal information, etc.) is written in the separated third layer 30 alone. Is determined. Further, the information cannot be read by a third party without special processing (giving of the second energy), and the leakage of personal information and the like can be prevented and the security can be enhanced.

As a result, the delivery label after receipt can be discarded as it is without cutting.

In addition, in this specification, "coloration" means a change from a color tone before applying energy, and is a concept including, for example, color development, light emission, fading and the like.

Specifically, the home delivery label 1A (1) of the present embodiment shown in FIG. 1 includes a first layer 10 including a first base material 11 and a color-developing layer 12, a second layer 20 including a transfer layer 21, and a second layer 20. It has a third layer 30 including a third base material 31 and a first pressure-sensitive adhesive layer 32.

In the delivery label 1A (1) of the present embodiment, the release liner 40 may be arranged on the surface of the first pressure-sensitive adhesive layer 32 opposite to the surface of the third base material 31. ..

The release liner 40 protects the first pressure-sensitive adhesive layer 32 during manufacturing and storage. When the delivery label 1A (1) is attached to the adherend, it is peeled off from the first pressure-sensitive adhesive layer 32.

<First layer>
The first layer 10 includes a first base material 11 and a color-developing layer 12 arranged on one surface side of the first base material 11 and on the side that becomes the outermost layer. In the present embodiment, the first energy is heat, and the first layer 10 contains a color-developing agent that develops color by heating in the color-developing layer 12.

<< First base material >>
The first base material 11 serves as a support for supporting the coloration layer 12.
The material constituting the first base material 11 is not particularly limited, and is, for example, polyester such as polyethylene terephthalate, polyethylene, polyolefin such as polypropylene, polyvinyl chloride, polycarbonate, (meth) acrylic resin, polystyrene, cellulose acetate. Resin and the like are preferable, polyester, polyolefin, polyvinyl chloride and the like are more preferable, and polyethylene terephthalate (PET) is further preferable. Further, high-quality paper, parchment paper, rayon paper, kraft paper and the like can also be used.

In addition, in this specification, (meth) acrylic resin means acrylic resin and methacrylic resin.

The thickness of the first base material 11 is preferably, for example, 5 μm or more and 300 μm or less, and more preferably 10 μm or more and 200 μm or less.

《Color layer》
The color-developing layer 12 is a layer (heat-sensitive color-changing portion) on which various contents are printed by coloring a portion to which heat is applied.
The color-developing layer 12 contains a color-developing agent in which the heat-applied portion develops color.

(Coloring agent)
The color-developing agent (heat-sensitive material) contained in the color-developing layer 12 is not limited to the following, and is, for example, a triallylmethanephthalide dye, a diphenylmethane dye, a thiazine dye, a spiro dye, a lactam dye, and the like. Leuco dyes (electron donating color-developing compounds) such as fluorane dyes, fluorene dyes, bislactone dyes, chromenopyrazole dyes, diazo compound heat-sensitive materials, etc., as well as nickel chloride, hexamethylenetetramine and nickel composites. Nickel compounds such as nickel compounds, copper compounds such as cupric hydroxide, lead compounds such as lead α-mercaptopropionate, bismuth compounds such as bismuth nitrate and bismuth oxalate, etc. A material or the like that becomes an object and irreversibly discolors can be used.

Further, the color-developing layer 12 may contain a color developer (electron-accepting substance). This makes the discoloration due to heating more remarkable. Examples of the color developer include bisphenols, monophenols, phenol polymers, aromatic carboxylic acids and esters thereof and polyvalent metal salts thereof, benzyl compounds, novolak type phenol resins, active white clay, acidic white clay, and attavargit. , Inorganic acidic substances such as aluminum silicate can be used.

The color-developing layer 12 may contain, for example, a component other than the heat-sensitive material and the color-developing agent as described above. Examples of such components include various resin materials and fillers. When the color-developing layer 12 contains a resin material, the color-developing layer 12 can be formed more easily, and the color-developing layer 12 can have excellent adhesion to the first base material 11. ..

Further, the coloration layer 12 is preferably transparent in a state where there is no history of heating. Thereby, it is possible to more easily and surely identify whether or not there is a history of heating the delivery label 1A (1).

The color-developing layer 12 is not particularly limited as long as it has a function of changing color by heating, but it is preferably one that changes color when heated to 60 to 180 ° C. In other words, the color change start temperature of the coloration layer 12 is preferably 60 to 180 ° C. As a result, it is possible to more reliably prevent the coloration layer 12 from being discolored under the normal usage conditions and storage conditions of the delivery label 1A (1).

The thickness of the color-developing layer 12 is preferably 0.1 μm or more and 100 μm or less, more preferably 1 μm or more and 50 μm or less, and further preferably 2 μm or more and 20 μm or less.

By setting the thickness of the color-developing layer 12 within the above range, the contrast between the color-developed region and the non-color-developed region is enhanced by the thickness effect when printing, and the visibility of the first pattern 50A is improved.

<Second layer>
The second layer 20 includes a transfer layer 21. The second layer 20 is supported on the surface of the first base material 11 opposite to the coloration layer 12 before heat (first energy) is applied. Further, the second layer 20 and the third layer 30 are not adhered to each other before heat (first energy) is applied, and are simply overlapped with each other.

The second layer 20 contains a substance that emits light by applying the second energy to the transfer layer 21. Examples of the second energy include infrared rays and ultraviolet rays, but ultraviolet rays are preferable.

In the present embodiment, the second energy is ultraviolet rays or infrared rays, and the substance is preferably a substance that emits light by irradiation with ultraviolet rays or infrared rays.

In particular, in the present embodiment, the transfer layer 21 contains an ultraviolet light emitting agent that emits light and becomes visible by irradiating the transfer layer 21 with excitation light having a predetermined wavelength as a substance that emits light by applying ultraviolet rays or infrared rays (second energy). do.

Since the second energy is ultraviolet rays or infrared rays and the substance emits light when irradiated with ultraviolet rays or infrared rays, it is relatively easy to select the material of the substance, and it is comparable to obtain it. It has the advantage of being inexpensive.

In the present embodiment, the second layer 20 has a heat-melting type heat transferable ink layer as the transfer layer 21.

In the thermal transfer method, a thermal transferable ink layer (transfer layer 21) in which ink (a substance that emits light when energy is applied in this embodiment) is dispersed in a thermal melt substance and an image receiving sheet (third layer 30) are superposed, and a thermal head is used. This is a method in which the heat transferable ink layer (transfer layer 21) is thermally melted by applying heat to the image receiving sheet (third layer 30), and the ink is transferred to the image receiving sheet (third layer 30) for printing.

Of the transfer layer 21, only the portion 21a to which heat (first energy) is applied is melted and transferred from the first layer 10 side to the third layer 30 side. It should be noted that the portion other than the portion to which heat (first energy) is not applied, that is, the portion 21a, remains supported on the first base material 11.

The substance that emits light by applying the energy contained in the transfer layer 21 is visible only when it is irradiated with ultraviolet rays or infrared rays, and is not visible when it is not irradiated with ultraviolet rays. It is a thing. Therefore, the information printed (transferred) on the third layer 30 can be visually recognized only when it is irradiated with ultraviolet rays or infrared rays, and cannot be visually recognized when it is not irradiated with ultraviolet rays or infrared rays.

《Transfer layer》
The transfer layer 21 emits light having a wavelength different from the wavelength of the received light (absorbed light) such as a material that emits down-conversion light (down-conversion material) as a substance that emits visible light when irradiated with ultraviolet rays. It is a heat transferable light emitting layer in which a light emitting agent is supported by an arbitrary binder resin.

(A substance that emits light when energy is applied)
In the present specification, the material that emits down-conversion light (down-conversion material) is a material that is excited by absorbing light having a predetermined wavelength and has a function of emitting (light emitting) light having a wavelength longer than the wavelength. Say that.

By using a down-conversion material as a substance that emits visible light when irradiated with ultraviolet rays, for example, when the transfer layer 21 is irradiated with light of a short wavelength such as ultraviolet rays (excitation light L1), visible light is emitted from the down-conversion material. It is possible to emit (emit) light in the wavelength region of (emission light L2).

The down-conversion material is preferably in the form of particles. This facilitates the handling of down-conversion materials. Also, it is possible to omit the use of a special solvent for dissolving the down-conversion material.

When the down-conversion material is in the form of particles, the average particle size of the particles is preferably 10 nm or more and 200 nm or less, and more preferably 15 nm or more and 100 nm or less. As a result, the luminous efficiency of the down-conversion material can be made more excellent.

The light (excitation light L1) that excites the down-conversion material is ultraviolet light, and its wavelength is preferably 200 nm or more and 400 nm or less, and more preferably 300 nm or more and 380 nm or less.

As a result, the luminous efficiency of the down-conversion material can be made more excellent. In addition, the range of choices for down-conversion materials will be expanded. Further, as a light source for causing the down-conversion material to emit light, an inexpensive, simple configuration and widely used light source can be preferably used.

The peak wavelength of light emission by the down-conversion material is preferably 400 nm or more and 780 nm or less, and more preferably 420 nm or more and 730 nm or less. As a result, the light emitted by the down-conversion material can be converted into visible light.

Further, the down conversion material may be made of an organic material, but is preferably made of a material containing an inorganic substance. Thereby, the durability of the transfer layer 21 including the down conversion material can be further improved.

Examples of the down-conversion material include _{Y2O 3 :} Eu (emission wavelength: 620 to 630 nm), ZnS: Cu (emission wavelength: 530 to 540 nm), ZnS: Al (emission wavelength: 445 to 455 nm) and the like. ..

Further, a plurality of types of down conversion materials having different conditions (for example, shape, composition, type of surface treatment, size, etc.) may be used.

According to such a transfer layer 21, since the transfer layer 21 is transparent in a visible light environment, the transferred second pattern 50B cannot be visually recognized, and the information of the second pattern 50B can be read. Although it cannot be done, as shown in FIG. 4C, the emitted light L2 can be read when the excitation light L1 (ultraviolet rays) is irradiated. Therefore, it is possible to prevent the information from being read illegally.

The substance that emits visible light when irradiated with ultraviolet rays is preferably contained in the transfer layer 21 in an amount of 0.01% by weight or more and 50% by weight or less of the total weight of the transfer layer composition constituting the transfer layer 21. , 0.1% by weight or more and 40% by weight or less is more preferable, and 1% by weight or more and 25% by weight or less is further preferable. Most preferably, it is 2% by weight or more and about 10% by weight or less.

In the present embodiment, as the substance that emits light by applying the second energy, for example, a material that emits up-conversion (up-conversion material) can be used in addition to the above-mentioned material that emits down-conversion.

In the present specification, the material that emits up-conversion light (up-conversion material) is a material that is excited by absorbing light having a predetermined wavelength and has a function of emitting (light emitting) light having a wavelength shorter than that wavelength. Say that.

In particular, by using an up-conversion material as a light-emitting agent, visible light is emitted from the up-conversion material when, for example, a material containing a light-emitting agent is irradiated with a long-wavelength energy ray (excitation light L1) such as infrared rays (excitation light L1). It can be made to emit light.

The up-conversion material is not particularly limited as long as it is excited by absorbing light of a predetermined wavelength and has a function of emitting (emitting) light having a wavelength shorter than that wavelength, but the following conditions are met. It is preferable that the above is satisfied.

The up-conversion material is preferably in the form of particles. This facilitates the handling of up-conversion materials. Also, the use of special solvents to dissolve the up-conversion material can be omitted.

When the up-conversion material is in the form of particles, the average particle size of the particles is preferably 10 nm or more and 200 nm or less, and more preferably 15 nm or more and 100 nm or less. As a result, the luminous efficiency of the up-conversion material can be made more excellent.

The wavelength of the light (excitation light L1) that excites the up-conversion material is preferably 780 nm or more and 4000 nm or less, more preferably 800 nm or more and 2500 nm or less, and further preferably 820 nm or more and 1400 nm or less.

As a result, the luminous efficiency of the up-conversion material can be made more excellent. In addition, the range of choices for up-conversion materials will be expanded. Further, as the light source, an inexpensive, simple structure and widely used light source can be preferably used.

The peak wavelength of light emission by the up-conversion material is preferably 400 nm or more and 780 nm or less, and more preferably 420 nm or more and 730 nm or less. As a result, the light emitted by the up-conversion material can be regarded as visible light.

Further, the up-conversion material may be made of an organic material, but is preferably made of a material containing an inorganic substance. This makes it possible to further improve the durability of the transfer layer 21 containing the up-conversion material.

An up-conversion material composed of an organic material and an up-conversion material composed of a material containing an inorganic substance may be used in combination.

Examples of the organic material (organic material capable of emitting up-conversion light) constituting the up-conversion material include 4- [N- (2-hydroxyethyl) -N- (methyl) aminophenyl] -4'-(6-hydroxy). Hexylsulfonyl) stilbene (APSS excitation light wavelength: 962 to 968 nm, emission color: yellowish green), and the like can be mentioned.

Examples of the inorganic substance constituting the up-conversion material (inorganic substance capable of emitting up-conversion light) include an inorganic substance containing a lanthanoid ion, an inorganic substance containing a transition metal ion, and the like.

Above all, when the up-conversion material contains an inorganic substance containing a lanthanoid ion, the luminous efficiency of the up-conversion material can be made more excellent.

Further, when the up-conversion material contains an inorganic substance containing a transition metal ion (for example, Ti ²⁺ ), the cost of the up-conversion material can be reduced while making the luminous efficiency of the up-conversion material sufficient.

Examples of the lanthanoid ion-containing inorganic substance capable of up-conversion light emission include halides and oxides doped with one or more lanthanoid ions (for example, rare earth oxides, zinc oxide, zirconium oxide, and complex oxidation thereof. (Materials, etc.), sulfides (for example, rare earth oxides, etc.) and composite materials thereof and the like can be mentioned.

Examples of the halide, oxide, and sulfide to which the lanthanoid ion is doped include BaY ₂ F ₈ , KZnF ₃ , NaYF ₄ , NaYb (WO ₄ ) ₂ , Ga ₂ S ₃ -La ₂ O ₃ , and Y ₂ O. ₃ , Gd ₂ O ₃ , ZrO ₂ , ZnO, BaTIO ₃ , ZrF ₂ -SiO ₂ , ZnO-SiO ₂ and the like can be mentioned.

Specific examples of the lanthanoid ion-containing inorganic substance capable of up-conversion emission include NaYF ₄ (Y: Yb: Er = 78: 20: 2, excitation light wavelength: 980 nm, emission color: green) doped with Y: Yb: Er. ), Y: Yb: Er-doped NaYF ₄ (Y: Yb: Er = 69: 30: 1, excitation light wavelength: 980 nm, emission color: blue), Y: Yb: Tm-doped NaYF ₄ (Y: Examples thereof include Yb: Tm = 78: 20: 2, excitation light wavelength: 980 nm, emission color: red), Er ³⁺ -doped BaCl ₂ (excitation light wavelength: 1535 nm, emission color: green) and the like.

Examples of the transition metal ion-containing inorganic substance capable of up-conversion emission include MgCl ₂ (excitation light wavelength: 1060 to 1075 nm, emission color: magenta) doped with Ti ²⁺ .

Further, a plurality of types of up-conversion materials having different conditions (for example, shape, composition, type of surface treatment, size, etc.) may be used.

Further, in the present invention, the up-conversion material and the down-conversion material may be used in combination.

(Binder resin)
The binder resin is not limited to the following as long as it is transparent under visible light, and is not limited to, for example, (meth) acrylic acid, (meth) acrylic acid ester, acrylonitrile, cyanoacrylate, acrylamide, olefin, styrene, vinyl acetate, and chloride. Examples include homopolymers or copolymers of vinyl, vinyl alcohol, vinyl ether, vinylpyrrolidone, vinylpyridine, vinylcarbazole, vinylimidazole, and vinylidene chloride, fluororesins, and natural resins. Among them, at least one of a (meth) acrylic resin and a styrene- (meth) acrylic acid ester copolymer resin is preferable, and at least one of an acrylic resin and a styrene- (meth) acrylic acid ester copolymer resin. Is more preferable, and a styrene- (meth) acrylic acid ester copolymer resin is further preferable. The above-mentioned copolymer may be in any form of a random copolymer, a block copolymer, an alternate copolymer, and a graft copolymer.

The binder resin may be composed of one kind, two kinds, three kinds or more different binder resins. When two or more different binder resins are present, each binder resin is preferably contained in a range of, for example, 5% by weight or more and 90% by weight or less, based on the weight of all the binder resins, and is preferably 30% by weight. % Or more and 50% by weight or less are more preferable. Each binder resin may be used in equal amounts or in different amounts.

The glass dislocation point of the binder resin may be preferably 60 ° C. or higher, more preferably 110 ° C. or higher. When the glass dislocation point is low, the second layer (transfer layer 21) may not be separated from the third layer when the laminated body is stored in a high temperature environment.

Further, in addition to the substance that emits light by applying the second energy and the binder resin, additives such as a mold release agent, a softener, and a surfactant can be appropriately added to the transfer layer 21.

<Third layer>
The third layer 30 includes a third base material 31 and a first pressure-sensitive adhesive layer 32 arranged on the side opposite to the side facing the second layer 20 side of the third base material 31.

<< Third base material >>
The third base material 31 is a layer of the second layer (transfer layer 21) on which the portion 21a to which heat H is applied is transferred to form a second pattern 50B that emits light by applying energy. Is.

The third base material 31 can have the same structure as the first base material 11 of the first layer 10 described above. Among them, it is preferable to use paper, especially high-quality paper, because it can be disposed of together with corrugated cardboard.

<< First adhesive layer >>
The first pressure-sensitive adhesive layer 32 is a pressure-sensitive adhesive layer (strong pressure-sensitive adhesive layer) when the home delivery label 1A (1) is attached to the adherend.

(Adhesive)
The pressure-sensitive adhesive constituting the first pressure-sensitive adhesive layer 32 is not particularly limited. For example, examples of the adhesive include an acrylic adhesive, a urethane adhesive, a rubber adhesive, a polyester adhesive, a silicone adhesive, and a polyvinyl ether adhesive. Among these, the pressure-sensitive adhesive constituting the first pressure-sensitive adhesive layer 32 is preferably at least one selected from the group consisting of an acrylic pressure-sensitive adhesive, a urethane-based pressure-sensitive adhesive, and a rubber-based pressure-sensitive adhesive, and is transparent. From the viewpoint of the above, it is more preferable that the pressure-sensitive adhesive layer contains an acrylic pressure-sensitive adhesive.

Examples of the acrylic pressure-sensitive adhesive include acrylic acid ester homopolymers, copolymers containing two or more acrylic acid ester units, and copolymers of acrylic acid esters and other functional monomers. Those containing at least one selected from them (hereinafter, also simply referred to as "acrylic polymer") are used. Examples of the acrylic acid ester include (meth) acrylic acid butyl ester, (meth) acrylic acid pentyl ester, (meth) acrylic acid hexyl ester, (meth) acrylic acid 2-ethylhexyl ester, and (meth) acrylic acid heptyl ester. , (Meta) acrylic acid octyl ester, (meth) acrylic acid nonyl ester, (meth) acrylic acid decyl ester and the like. Examples of the functional monomer include (meth) acrylic acid hydroxyethyl ester, (meth) acrylic acid hydroxypropyl ester, (meth) acrylic acid hydroxybutyl ester, (meth) acrylamide, and dimethyl (meth) acrylamide. Can be mentioned. The acrylic pressure-sensitive adhesive is generally classified into a solvent type and an emulsion type, and the solvent type is usually the acrylic polymer, a solvent, a cross-linking agent, and a tackifier, a plasticizer, and an antistatic agent used as desired. It is composed of an agent, an ultraviolet absorber and the like, and as a cross-linking system, a methylol group condensation, an ion cross-linking, a urethane cross-linking, an epoxy cross-linking and the like are used. On the other hand, the emulsion type is usually composed of the acrylic polymer, an emulsifier, an aqueous solvent, a tackifier used as desired, and the like.

Examples of the rubber-based pressure-sensitive adhesive include styrene-isoprene block copolymers and styrene-butadiene block copolymers.

(Other ingredients)
The first pressure-sensitive adhesive layer 32 contains, if necessary, a dispersant, a tackifier, an antioxidant, an ultraviolet absorber, a light stabilizer, a heat stabilizer, a softener, a silane coupling agent, a filler, and a colorant. Other ingredients such as may be blended. One of these may be used alone, or two or more thereof may be mixed and used.

The thickness of the first pressure-sensitive adhesive layer 32 is preferably 5 μm or more and 100 μm or less, more preferably 10 μm or more and 50 μm or less, and further preferably 15 μm or more and 40 μm or less.

<Peeling liner>
The release liner 40 protects the first pressure-sensitive adhesive layer 32 during manufacturing and storage. When the delivery label 1A (1) is attached to the adherend, it is peeled off from the first pressure-sensitive adhesive layer 32.

The release liner 40 is not particularly limited, and a known release liner can be appropriately selected and used. In general, the peeling liner 40 includes a peeling base material that has been peeled on one side or both sides.

<< Peeling base material >>
Examples of the release base material that can be used for the release liner 40 include polyester films such as polyethylene terephthalate, polybutylene terephthalate, and polyethylene naphthalate, polyolefin films such as polyethylene, polypropylene, and polymethylpentene, and high-quality paper and glassin paper. Examples thereof include paper base materials such as kraft paper, and sheets such as laminated paper obtained by laminating a thermoplastic resin such as polyethylene on these paper base materials.

<< Peeling agent >>
Further, as the peeling treatment agent for performing the peeling treatment, a known peeling treatment agent can be used without particular limitation, and specifically, silicone, olefin resin, isoprene resin, butadiene resin, and length. Chain alkyl-based resins and alkyd-based resins are preferable, and butadiene-based resins and alkyd-based resins are more preferable.

The thickness of the release liner 40 is not particularly limited, but is preferably 10 μm or more and 150 μm or less, and more preferably 20 μm or more and 130 μm or less.

[How to form a display pattern]
The delivery label 1A (1) of the present embodiment is substantially the same as the first layer 10 (first base material 11) and the third layer (third base material 31) by applying heat as the first energy. By forming the display pattern of, a predetermined content can be printed and used.

The content (printed content) indicated by the display pattern is not particularly limited, and is composed of various characters, symbols, codes, dots, lines, figures, or a combination of two or more thereof, and is arbitrary content. Can be.

The display pattern may be an information code such as a one-dimensional bar code or a two-dimensional code. A one-dimensional bar code is a code that evolves data into two dimensions and records information in a one-dimensional manner, and a two-dimensional code is a code that evolves data into two dimensions and records information in a two-dimensional manner.

The delivery label 1A (1) usually displays information on the delivery destination (address, name, etc. of the delivery destination) required for the delivery company to deliver the delivery, and management information for managing the delivery status. ing.

Here, the case where the information code for obtaining the above information is displayed is shown. The information code is coded for delivery address information and management information, or is coded for access information for accessing such information.

First, as shown in FIG. 2, by applying heat H to the delivery label 1A (1), the heat-applied portion 12a in the color-developing layer 12 of the first layer 10 is colored, and a predetermined content is obtained. The first pattern 50A to be represented is printed on the first layer 10.

Further, the heat applied to the first layer 10 is transferred to the second layer 20. Then, in the second layer 20, only the portion 21a to which heat is applied is melted and adhered (transferred) to the third base material 31.

The delivery label 1A (1) is used by peeling the release liner 40 from the first pressure-sensitive adhesive layer 32 and attaching the release liner 40 to the adherend 60 by facing the first pressure-sensitive adhesive layer 32.

The adherend 60 is, for example, a package such as a box or a bag in which the package is stored when the package is delivered.

At the time of reception and collection, the first pattern 50A printed on the first layer 10 is formed of a general thermal transfer ink such as black, so that it can be visually recognized (see FIG. 4A). ).

Being able to see information under normal conditions (in a visible light environment) facilitates delivery procedures at shippers and collection points.

After the reception and collection are completed, the first layer 10 and the second layer 20 are separated from the third layer as shown in FIG. The first layer 10 and the second layer 20 are handed to the shipper side as a copy, for example.

At this time, of the transfer layer 21 (heat transferable layer containing a substance that emits light when energy is applied) of the second layer 20, the portion 21a to which heat is applied is substantially the same as the first pattern 50A. Pattern 50B is transferred to the third substrate 31 side of the third layer 30.

Only the third layer 30 on which the second pattern 50B is formed by transferring a part of the transfer layer 21 to the package (adhesion 60) remains as a delivery slip.

Then, the delivery company delivers the delivered product based on the information (second pattern 50B) displayed on the delivery slip (third layer 30) attached to the package.

However, the second pattern 50B transferred to the third layer 30 is transparent under a normal state (under a visible light environment) and therefore cannot be visually recognized (see FIG. 4B).

Therefore, when the delivery company irradiates the third layer 30 with ultraviolet rays or infrared rays as the excitation light L1, the substance constituting the second pattern 50B emits the emitted light L2, whereby the second pattern 50B can be visually recognized. (See FIG. 4 (c)).

Examples of the means for irradiating ultraviolet rays include black light and the like. Examples of the means for recognizing the second pattern 50B include a scanner that irradiates ultraviolet rays or infrared rays and detects visible light, in addition to visual inspection.

As described above, in the home delivery label 1A (1) of the present embodiment, it seems that no predetermined content (content indicating personal information, etc.) is written in the separated third layer 30 alone. Is determined. Unless special processing (ultraviolet irradiation) is performed, a third party cannot read information such as an information code, and can prevent leakage of personal information and enhance security.

For example, after the delivery is completed, the delivery slip can be discarded as it is without being cut. Even in this case, leakage of personal information or the like from the destroyed delivery slip is prevented.

Of course, the home delivery label 1A (1) of the present embodiment is not limited to the above-mentioned example, and contains the heat transferable ink transferred by applying heat in the first layer 10 as a coloring agent. It may be a thing.

[Second Embodiment]
[Delivery label]
Next, a second embodiment of the delivery label to which the laminated body of the present invention is applied will be described.

In the following description, the parts different from the above-described first embodiment will be mainly described, and the detailed description of the same parts will be omitted.

FIG. 5 is a schematic vertical sectional view showing a second embodiment of a delivery label to which the laminate of the present invention is applied. Further, FIG. 6 is a schematic diagram showing a state in which the first energy is applied to the delivery label shown in FIG.

The home delivery label 1B (1) of the present embodiment shown in FIG. 5 includes a first layer 10, a second base material 22, and a transfer layer 21 including a first base material 11, a color-developing layer 12, and a second adhesive layer 13. It has a second layer 20 including, and a third layer 30 including a third base material 31, a first pressure-sensitive adhesive layer 32, and a third pressure-sensitive adhesive layer 33.

<First layer>
The first layer 10 is a first base material 11, a color-developing layer 12 arranged on one surface side of the first base material 11 and the outermost layer side, and the other surface of the first base material 11. Includes a second pressure-sensitive adhesive layer 13 arranged on the side.

<< First base material >>
The first base material 11 serves as a support for supporting the color-developing layer 12 and the second pressure-sensitive adhesive layer 13.

The first base material 11 can have the same configuration as the first base material 11 in the first embodiment described above.

《Color layer》
The color-developing layer 12 can have the same configuration as the color-developing layer 12 in the first embodiment described above.

<< Second adhesive layer >>
The second pressure-sensitive adhesive layer 13 is a layer that bonds the first base material 11 and the second base material 22 that supports the transfer layer 21 at predetermined positions.

Further, the second pressure-sensitive adhesive layer 13 is located on the surface of the first base material 11 opposite to the color-developing layer 12 outside the range in which the first pattern 50A is formed, for example, the first base material 11. It is provided only at the edge.

(Adhesive)
The pressure-sensitive adhesive layer is composed of, for example, a pressure-sensitive adhesive containing a resin such as acrylic, silicone, rubber, polyester, polyurethane, or polyethylene as a main component. Further, as the pressure-sensitive adhesive, for example, an organic solvent-soluble type, an organic solvent-dispersed type, a water-dispersed type, a water-soluble type and the like can be used. The removable pressure-sensitive adhesive layer is not particularly limited as long as it has the above-mentioned properties, and is appropriately selected depending on the materials of the members to be bonded and the desired peel strength. The pressure-sensitive adhesive layer may be an adhesive layer.

The thickness of the second pressure-sensitive adhesive layer 13 is preferably 1 μm or more and 50 μm or less, more preferably 10 μm or more and 25 μm or less, and particularly preferably 3 μm or more and 30 μm or less.

If the thickness of the second pressure-sensitive adhesive layer 13 is less than 1 μm, sufficient adhesiveness to the second layer 20 (second base material 22) may not be ensured, and if it exceeds 50 μm, it protrudes from the end portion. there is a possibility.

<Second layer>
The second layer 20 includes a second base material 22 and a transfer layer 21 arranged on the side of the second base material 22 opposite to the first layer 10.

In the present embodiment, the second layer 20 has a thermal transferable layer containing a substance that emits light by applying energy as a transfer layer 21 on one surface of the second base material 22.

Of the transfer layer 21, only the portion 21a to which heat (first energy) is applied improves the adhesiveness of the third layer 30 to the third base material 31, from the second layer 20 side (second base material 22). It is transferred to the third layer 30 side (third base material 31).

<< Second base material >>
Examples of the second base material 22 include a film made of polyester such as polyethylene terephthalate, polyethylene naphthalate, and polyarylate, and are generally used as a base material for polycarbonate, polyamide, aramid, and other heat transferable ink ribbons. Films made of various plastics can be used. Further, high-density thin paper such as condenser paper may be used.

The thickness of the second base material 22 is preferably 1 μm or more and 10 μm or less, and more preferably 2 μm or more and 7 μm or less, from the viewpoint of improving heat conduction.
《Transfer layer》
The transfer layer 21 can have the same configuration as the transfer layer 21 (heat transferable layer containing a substance that emits light by applying energy) in the above-mentioned first embodiment.

<Third layer 30>
The third layer 30 includes a third base material 31, a third adhesive layer 33 arranged on one surface side of the third base material 31 and facing the second layer 20, and a third base material. It includes a first pressure-sensitive adhesive layer 32 arranged on the other side of 31.

<< Third base material >>
The third base material 31 is a layer of the transfer layer 21 on which the portion 21a to which heat is applied is transferred to form a second pattern 50B that emits light by applying energy.

The third base material 31 can have the same configuration as the third base material 31 in the above-described first embodiment.

<< First adhesive layer >>
The first pressure-sensitive adhesive layer 32 is a pressure-sensitive adhesive layer (strong pressure-sensitive adhesive layer) when the home delivery label 1B (1) is attached to the adherend.

The first pressure-sensitive adhesive layer 32 can have the same configuration as the first pressure-sensitive adhesive layer 32 in the third layer 30 of the first embodiment described above.

<< Third adhesive layer >>
The third pressure-sensitive adhesive layer 33 binds the second layer 20 having the transfer layer 21 and the third base material 31 on which the second pattern 50B is manually transferred to a predetermined position.

Further, the third pressure-sensitive adhesive layer 33 is located outside the range on which the second pattern is transferred, for example, on the surface of the third base material 31 opposite to the first pressure-sensitive adhesive layer 32, for example, the third base material 31. It is provided only on the edge.

In such a home delivery label 1B (1), as shown in FIG. 6, by applying heat H as the first energy, the heat-applied portion 12a in the color-developing layer 12 of the first layer 10 is colored. Then, the first pattern 50A representing a predetermined content is printed on the first layer 10.

Further, the heat H applied to the first layer 10 is transferred to the second layer 20. Then, in the second layer 20, only the portion 21a to which heat is applied is melted and transferred to the third base material 31 among the transfer layer 21 (the thermal transferable layer containing a substance that emits light when energy is applied). ..

After that, when the second layer 20 and the third layer 30 are separated, the portion of the transfer layer 21 of the second layer 20 to which heat is applied is from the second base material 22 side to the third layer. No. 30 is successfully transferred to the third substrate 31, and a second pattern 50B having substantially the same content as the first pattern 50A is formed.

Even in the home delivery label 1B (1) of the present embodiment, the predetermined contents (contents indicating personal information, etc.) indicated by the second pattern in the same state (under a visible light environment) with only the separated third layer 30. Is determined as if nothing is written. Unless special processing (irradiation with ultraviolet rays or infrared rays) is performed, a third party cannot read information such as an information code, and leakage of personal information or the like can be prevented and security can be enhanced.

[Third Embodiment]
[Delivery label]
Next, a third embodiment of the laminated body of the present invention will be described.

In the following description, the parts different from the above-described embodiment will be mainly described, and the detailed description of the same parts will be omitted.

FIG. 7 is a schematic vertical sectional view showing a third embodiment of the delivery label 1 (laminated body of the present invention). Further, FIG. 8 is a schematic diagram showing a state in which the first energy is applied to the delivery label shown in FIG. 7.

The delivery label 1C (1) of the present embodiment shown in FIG. 7 has a first layer 10 including a transfer layer 14, a second layer 20 including a second base material 22 and a transfer layer 21, and a third base material 31. It has a third layer 30 including a first pressure-sensitive adhesive layer 32 and a third pressure-sensitive adhesive layer 33.

<First layer>
The first layer 10 includes a transfer layer 14.

《Transfer layer》
Hereinafter, the thermal transfer ink ribbon having the thermal transfer ink layer on the ribbon base material as the transfer layer 14 will be described. Before the heat (first energy) is applied, the transfer layer 14 is not adhered to the second base material 22, but is simply overlapped.

The thermal transferable ink layer is a layer in which a thermal transferable dye or pigment is supported on an arbitrary binder resin. As the dye or pigment used, any dye or pigment used in a conventionally known thermal transfer sheet can be used, and the dye or pigment is not particularly limited.

Examples of the heat transferable ink layer include a sublimation transfer layer using an ink having a property of sublimating by the heat of the thermal head and a heat melt transfer layer using an ink melted by the heat of the thermal head. Layers are preferred.

Further, in the home delivery label 1C (1) of the present embodiment, when the desired information is monocolor, only one color layer appropriately selected as the thermal transfer ink layer may be formed, and the desired information may be formed. In the case of full color, cyan, magenta and yellow (and black, if necessary) can be selected and formed as the thermal transfer ink layer.

(Dye or pigment)
As the heat sublimation dye used in the ink for forming a sublimation transfer layer, a sublimation disperse dye is preferable, and for example, as a yellow component, Solvent Yellow 56, 16, 30, 93, 33, Disperse Yellow 201 , 231 and 33 and the like. As the magenta component, C.I. I. Disperse Thread 60, Disperse Violet 26, C.I. I. Solvent Red 27, or C.I. I. Solvent Red 19 can be mentioned. The cyan component is C.I. I. Disperse Blue 354, 24, C.I. I. Solvent blue 63, 36 and the like can be mentioned. The binder is not particularly limited, but is limited to cellulosic resins such as ethyl cellulose, hydroxyethyl cellulose, ethyl hydroxy cellulose, hydroxypropyl cellulose, methyl cellulose and cellulose acetate, polyvinyl alcohol, polyvinyl acetate, polyvinyl butyral, polyvinylpyrrolidone, and the like. Examples thereof include vinyl-based resins such as polyacrylamide, polyester resins, styrene-acrylonitrile copolymerized resins, and phenoxy resins. Of these, polyvinyl butyral, styrene-acrylonitrile copolymer resin, and phenoxy resin are preferable.

Dyes used in the ink for forming a heat-melt transfer layer include diarylmethane, triarylmethane, thiazole, methine, azomethane, xanthene, axazine, thiazine, azine, acridine, and azo. Generally used thermotransfer dyes such as spirodipyran-based, isodorinospiropirane-based, fluorolan-based, rhodamine dactane-based, and anthraquinone-based dyes can be widely used.

Known organic pigments and inorganic pigments can be used as the pigments used in the ink for forming a heat-melt transfer layer. For example, carbon black, azo-based, phthalocyanine-based, quinalidon-based, thioindigo-based, and anthraquinone. Pigments such as system and isoindoline system can be mentioned.

(Binder resin)
As the binder resin, conventionally known ones can be used, and vinyl resins such as polyvinyl alcohol, polyvinyl acetate, polyvinylpyrrolidone, polyvinylacetal, polyvinylbutyral, ethyl cellulose, methyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, cellulose acetate, butyric acid vinegar can be used. Specific examples include cellulose-based resins such as cellulose and cellulose acetate propionate, polyester resins, phenoxy resins, styrene-acrylic nitrile copolymer resins, polycarbonate resins, polyacrylamide resins and other resins having excellent heat resistance and dye transfer properties. Can be mentioned.

The glass dislocation point of the binder resin may be preferably 60 ° C. or higher, more preferably 110 ° C. or higher. If the glass dislocation point is low, there is a high possibility that printing defects will occur.

The weight ratio of the dye or pigment to the binder resin is preferably 30 parts by mass or more and 300 parts by mass or less, and more preferably 50 parts by mass or more and 200 parts by mass or less with respect to 100 parts by mass of the binder resin. If it is smaller than 30 parts by mass, the concentration of the dye or pigment becomes low, so that the color development sensitivity becomes insufficient and it becomes difficult to obtain a good thermal transfer image. On the other hand, when it is larger than 300 parts by mass, the solubility of the dye in the binder resin is extremely lowered, so that the storage stability of the ink layer is lowered and the dye is easily deposited.

Further, in addition to the pigment or dye and the binder resin, additives such as a mold release agent, a softening agent, and a surfactant can be appropriately added to the heat transferable ink layer.

<Second layer>
As the second base material 22 and the transfer layer 21 possessed by the second layer 20, both the second base material 22 and the transfer layer 21 (light emission when energy is applied) in the second layer 20 of the first embodiment described above. It can have the same structure as the thermal transferable layer) containing the substance.

<Third layer>
The third base material 31, the first pressure-sensitive adhesive layer 32, and the third pressure-sensitive adhesive layer 33, which the third layer 30 has, are all the third base material 31 in the third layer 30 of the first embodiment described above. , The same configuration as that of the first pressure-sensitive adhesive layer 32 and the third pressure-sensitive adhesive layer 33 can be obtained.

In such a home delivery label 1C (1), as shown in FIG. 8, heat is applied to the transfer layer 14 (heat transferable ink layer) of the first layer 10 by applying heat H as the first energy. Only portion 14a is transferred to the second substrate 22.

Further, the heat H applied to the first layer 10 is transferred to the second layer 20. Then, in the second layer 20, only the portion 21a to which heat is applied is transferred to the third base material 31 in the transfer layer 21 (heat transferable ultraviolet light emitting agent layer).

After that, when separated between the first layer 10 and the second layer 20, the heat-applied portion 14a of the transfer layer 14 of the first layer 10 is satisfactorily transferred to the second base material 22 side. , The first pattern 50A is formed.

Further, when the second layer 20 and the third layer 30 are separated from each other, the heat-applied portion 21a of the transfer layer 21 of the second layer 20 is the third from the second base material 22 side. The layer 30 is satisfactorily transferred to the third base material 31 side on which the first pressure-sensitive adhesive layer 32 is formed, and a second pattern 50B having substantially the same contents as the first pattern 50A is formed.

Even in the home delivery label 1C (1) of the present embodiment, the predetermined contents (contents indicating personal information, etc.) indicated by the second pattern in the same state (under a visible light environment) with only the separated third layer 30. Is determined as if nothing is written. Unless special processing (irradiation of ultraviolet rays or infrared rays) is performed, a third party cannot read information such as an information code, and leakage of personal information or the like can be prevented and security can be enhanced.

Although the embodiments of the present invention have been described above, the present invention is not limited to this, and can be appropriately changed without departing from the spirit of the invention.

1,1A, 1B, 1C home delivery label (laminated body)
10 1st layer 11 1st base material 12 Coloring layer 12a Heat-applied portion 13 2nd adhesive layer 14 Transfer layer 14a Heat-applied portion 20 2nd layer 21 Transfer layer 21a Heat-applied portion 22 2nd base material 30 3rd layer
31 3rd base material 32 1st adhesive layer 33 3rd adhesive layer 40 Peeling liner 50A 1st pattern 50B 2nd pattern 60 Adhesive 100 Thermal head H Heat (1st energy)
L1 excitation light L2 emission light

Claims (7)

The first layer, in which the part to which the first energy is applied develops color,
The second layer provided on one surface side of the first layer and
A third layer provided adjacent to the first layer on the opposite side of the second layer is provided.
The second layer has a transfer layer which is arranged on the third layer side, contains a substance that emits light by applying a second energy, and is transparent in a visible light environment.
The substance contained in the portion of the second layer that has received the first energy is transferred to the third layer.
The portion of the first layer to which the first energy is applied can be visually recognized in a visible light environment.
A laminate characterized in that the pattern formed by the substance transferred to the third layer cannot be visually recognized in a visible light environment . The first energy is heat,
The laminate according to claim 1, wherein the first layer contains a color-developing agent that develops color by heating. The second energy is ultraviolet light.
The laminate according to claim 1 or 2, wherein the substance emits visible light when irradiated with ultraviolet rays. The second energy is infrared rays.
The laminate according to claim 1 or 2, wherein the substance emits visible light by irradiation with infrared rays. The laminate according to any one of claims 1 to 4, wherein the second layer and the third layer are separable. The laminate according to any one of claims 1 to 4, wherein the first layer and the second layer are separable, and the second layer and the third layer are separable. .. The laminate according to any one of claims 1 to 6, wherein the third layer has an adhesive layer arranged on the opposite side to the second layer.

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