JPH10217689A - Reversibly thermal discoloring pressure-sensitive transfer tape and transfer tool incorporating this transfer tape - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a reversibly thermal discoloring pressure-sensitive transfer tape by laminating a reversibly thermal discoloring resin layer containing a pressure-sensitive adhesive resin and a reversibly thermal discoloring pigment, directly or through a mold lubricating layer, on one of the faces of a support. SOLUTION: A mold lubricating layer 3, a transparent resin layer (about 5μm thick) 6 of vinyl chloride-vinyl acetate resin and a reversibly thermal discoloring resin layer 4 obtained by dispersing a reversibly thermal discoloring pigment which turns black at not higher than about 35 deg.C and turns colorless at higher than about 35 deg.C into an acrylic pressure-sensitive adhesive and applying the dispersion, are laminated on the surface of a strip-like support 2 of PET film. Thus a reversibly thermal discoloring pressure-sensitive transfer tape 1 is obtained. Next, the reversibly thermal discoloring resin layer 4 side of the reversibly thermal discoloring pressure-sensitive transfer tape 1 is attached to the surface of a sheet on which a character is written and the transparent resin layer 6 and the reversibly thermal discoloring resin layer 4 are transferred to the surface of a character after peeling the support 2. In addition, the surface of the sheet to which the transparent resin layer 6 and the reversibly thermal discoloring resin layer 4 are transferred does not visualize the character at a room temperature of about 25 deg.C. However, the character is visually recognized by heating the sheet surface at higher than about 35 deg.C by manual feeling.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a reversible thermochromic pressure-sensitive transfer tape and a transfer tool incorporating the same. More specifically, the present invention relates to a reversible thermochromic pressure-sensitive transfer tape capable of easily adhering a reversible thermochromic resin layer that changes color due to a temperature change to an arbitrary portion of an object to be transferred, and a transfer tool incorporating the same.

[0002]

2. Description of the Related Art Conventionally, a corrected pressure-sensitive transfer tape for correcting an erroneous character or the like described on paper has been disclosed in JP-A-6-920.
No. 85, JP-A-8-276695). This type of tape is configured such that the tape is stuck on the upper surface of a correction portion via a transfer tool with a feeding device, and characters can be written on the tape stuck if necessary, and a correction liquid is applied. Unlike the applicator of the present invention, it is possible to perform a continuous and uniform correction process without requiring a drying time for the correction liquid, and it has been frequently used recently.

[0003]

SUMMARY OF THE INVENTION The present invention provides a pressure-sensitive transfer tape of this type which is provided with a thermochromic function so that information such as characters can be hidden by a temperature change in addition to a correcting function. In addition, it is an object of the present invention to provide a reversible thermochromic pressure-sensitive transfer tape having a degree of freedom in affixing area. Furthermore,
The above-mentioned tape is built in a transfer tool with a feeding device, and an appropriate amount is fed out when necessary, and a reversible thermochromic resin layer of appropriate dimensions is formed on the surface of the transferred object, which can be played with a simple thermochromic seal. It is an object of the present invention to provide a transfer tool having no convenience.

[0004]

According to the present invention, a reversible thermochromic resin layer containing a pressure-sensitive adhesive resin and a reversible thermochromic pigment is laminated on one side of a support directly or via a release layer. On one side of the reversible thermochromic pressure-sensitive transfer tape or support, a reversible thermochromic resin layer containing a reversible thermochromic pigment and a resin, directly or via a release layer, and a pressure-sensitive adhesive resin layer are sequentially laminated. The subject is a reversible thermochromic pressure-sensitive transfer tape. Further, in the reversible thermochromic pigment, the pigment having a particle size of 0.5 to 30 μm occupies 95% by volume or more and is contained in a layer in an amount of 5 to 80% by weight. The layer is a reversible thermochromic pigment that exhibits hysteresis characteristics with a change in temperature and exhibits a tautomerism between a colored state and a colorless state, the concealing material being included in the reversible thermochromic resin layer, the concealment 0.1 to 100% by weight of the reversible thermochromic pigment
20% by weight, the color change temperature of the reversible thermochromic pigment is −20 to 70 ° C., and the reversible thermochromic resin layer and / or the pressure-sensitive adhesive resin layer is an arbitrary-shaped pattern layer. The requirement is that the support has a band shape. Furthermore, inside the body case with a head at one end,
The reel around which the reversible thermochromic pressure-sensitive transfer tape is wound is held rotatably, and the support side of the transfer tape fed out from the reel is pressed, so that the reversible thermochromic resin layer can be transferred to an object to be transferred. A transfer tool incorporating a reversible thermochromic pressure-sensitive transfer tape consisting of:

Examples of the material of the support include synthetic resin films such as polypropylene, polyethylene, polyethylene terephthalate, cellophane, acetate, and polyvinylidene chloride, and paper, synthetic paper, and nonwoven fabric.
Examples of the shape of the support include a circle, a triangle, and a rectangle such as a rectangle, a square, and a rhombus, and a band is particularly preferable. A strip shape is preferred. The support is provided with a release layer if necessary. The release layer is provided between the support and the reversible thermochromic resin layer, and is provided so that the support and the reversible thermochromic resin layer can be easily peeled off when transferring to an object to be transferred. The release layer may be provided on the other surface of the support, that is, on the surface on which the reversible thermochromic resin layer is not provided. This is to prevent the pressure-sensitive transfer tapes having the above-described configuration from binding to each other, and is particularly effective when the pressure-sensitive transfer tape is wound around a reel or the like.

[0006] The reversible thermochromic resin layer comprises a reversible thermochromic pigment which reversibly changes color by a temperature change, such as styrene-butadiene, ethylene vinyl acetate, polyvinyl acetate, polyisobutylene, neoprene, acrylic resin, alkyd resin, This is a layer fixed to a resin such as a vinyl chloride-vinyl acetate copolymer resin or a polyester resin in a dispersed state. still,
It is preferable that the reversible thermochromic pigment and the resin are applied after being dissolved or dispersed in a solvent. When the pressure-sensitive adhesive resin is not contained in the reversible thermochromic resin layer, the pressure-sensitive adhesive resin layer is provided after the reversible thermochromic resin layer is provided.

As the reversible thermochromic pigment, a reversible thermochromic composition containing three components of an organic compound medium that reversibly causes a color reaction between an electron-donating color-forming organic compound and an electron-accepting compound is used. Can be Specifically, Japanese Patent Publication No. 51-354
No. 14, JP-B-51-44706, JP-B-51-44708, JP-B-52-7776, JP-B-1-17154, JP-B-1-29398,
JP-A-7-186546 and the like are mentioned. The color changes before and after a predetermined temperature (discoloration point) as a boundary, and only one specific state can exist in a normal temperature range between the two states before and after the change. That is, the other state is
The state is maintained while the heat or cold required to develop the state is applied, but returns to the state exhibited in the normal temperature range if the application of the heat or cold is stopped, so-called temperature-color density due to temperature change. This is a type that shows a small hysteresis width (ΔH) and changes color.

Also, Japanese Patent Publication No. 4-171 proposed by the present applicant.
No. 54, JP-A-7-179777, JP-A-7-179777
The thermosensitive color-changing color memory composition which exhibits large hysteresis characteristics and discolors described in, for example, JP-A-339997, that is, the shape of a curve plotting a change in coloring density due to a temperature change indicates a temperature in a discoloration temperature range. A type of discoloring material that changes color following a significantly different path when the temperature is increased from a lower temperature side and conversely when the temperature is decreased from a higher temperature side than the discoloration temperature. A reversible thermochromic composition having a characteristic of being able to memorize and retain a state changed at a temperature below the low-temperature side discoloration point or above the high-temperature side discoloration point in a normal temperature range between the points is also effective.

Although the above-mentioned reversible thermochromic composition is effective even when applied as it is, it is preferable to use it by encapsulating it in microcapsules. That is, under various use conditions, the reversible thermochromic composition is maintained at the same composition and can exert the same function and effect. By being encapsulated in the microcapsules, a chemically and physically stable pigment can be constituted, and the particle diameter is 0.1 to 100 μm, preferably 0.5 to 30 μm, more preferably 2.0 to 10 μm.
The range of m satisfies the practicality. The microencapsulation is carried out by a conventionally known interfacial polymerization method, in situ polymerization method, in-liquid curing coating method, phase separation method from aqueous solution, phase separation method from organic solvent, melting dispersion cooling method, air suspension. There are a coating method, a spray drying method, and the like, which are appropriately selected according to the application. Furthermore, on the surface of the microcapsule, a secondary resin film is further provided according to the purpose to impart durability,
The surface properties can be modified for practical use.

A thermochromic light-shielding and light-transmitting microparticle having a hysteresis characteristic and being discolored by temperature change described in JP-A-8-34168 and having a tautomerism in both a white opaque state and a colorless transparent state. Capsule pigments can also be mentioned. The thermochromic light-shielding / light-transmitting microcapsule pigment includes one or more crystalline compounds selected from esters, ethers, and ketones having a melting point in the range of −40 ° C. to + 90 ° C. Particle size of 0.1 to
Thermochromic shading which is a 50 μm microcapsule pigment
It is a translucent microcapsule pigment.

The reversible thermochromic pigment is 0.5 to 30 μm.
The pigment having a particle size of preferably 2 to 10 μm accounts for 95% by volume or more, and 5 to 80% by weight in the reversible thermochromic resin layer.
Preferably, it is included. When the reversible thermochromic pigment having the above-mentioned particle size distribution is contained in the above-mentioned weight% in a layer, a sufficient color density is exhibited at the time of color development, and a color is less likely to be left when the color is erased.

In addition, the reversible thermochromic pigment exhibits hysteresis characteristics due to a change in temperature and exhibits a reciprocity between a colored state and a colorless state, so that a character or a figure printed on an object to be transferred or a tape can be used. The characters and figures provided below the reversible thermochromic resin layer can be concealed and revealed when necessary.However, by including a concealing material in the reversible thermochromic resin layer, more concealment properties can be obtained. Can be improved. Titanium oxide is preferably used as the concealing material.
When the content is 1 to 20% by weight, preferably 1 to 10% by weight, sufficient hiding properties and visual recognition of characters and figures appearing when the reversible thermochromic pigment is erased are not hindered.

The color change temperature of the reversible thermochromic pigment is -2.
A reversible thermochromic pigment that reversibly changes color in a temperature range of 0 to 70 ° C, preferably 20 to 50 ° C, and more preferably 25 to 40 ° C is suitably used. By using the reversible thermochromic pigment having the above-described color changing temperature, the color of the reversible thermochromic resin layer transferred to the transfer object can be easily changed by touching or rubbing with a hand.

The reversible thermochromic resin layer is formed by a conventionally known method, for example, screen printing, offset printing, gravure printing, coater, tampo printing, spray coating, electrostatic coating, electrodeposition coating, flow coating, roller coating. It can be formed on a support by means such as dip coating.

Further, the above-mentioned reversible thermochromic resin layer is formed such that a reversible thermochromic resin layer having an image of an appropriate character, numeral, figure or the like is formed thereon to form an image on an object to be transferred. Alternatively, as a method of forming an image on an object to be transferred in the same manner, the pressure-sensitive adhesive resin layer provided on the upper surface of the reversible thermochromic resin layer may be formed into an image of appropriate characters, numerals, figures, and the like. Thus, an image can be formed on an object to be transferred. Further, even if the reversible thermochromic resin layer or the pressure-sensitive adhesive resin layer is not formed by an appropriate image, the head portion of the transfer tool is formed by a roller,
Appropriate letters or numbers concave or convex on the roller surface,
By arranging an image such as a graphic, it is possible to form an image of an appropriate character, numeral, graphic, or the like on the transfer object.

Further, the color change of the reversible thermochromic resin layer can be varied by mixing an appropriate amount of the non-thermochromic colored dye / pigment, or the reversible thermochromic resin layer and the pressure-sensitive adhesive resin can be mixed. A non-color-changing layer made of the non-thermochromic coloring dye may be provided between the layers, and the non-color-changing layer may be hidden. In addition,
Examples thereof include a layer in which a non-color-changing layer and a reversible thermochromic resin layer are provided, and a layer in which a reversible thermochromic resin layer is overprinted. When two or more reversible thermochromic resin layers are laminated, each layer may be a layer that changes color at the same temperature or a layer that changes color at different temperatures.

[0017] Further, as described in Japanese Patent Application Laid-Open No. 7-81275, on the surface of the support, which exhibits a gradation of light and shade in a color-developed state, a portion where the density at the time of coloring is darker and a lighter gradation. The parts are arranged continuously or discontinuously, the lightest part has a visual density of at least half or less of the darkest part, and a reversible thermochromic resin layer that reversibly shows a gradation pattern of light and shade by temperature change. It is possible to create visually diverse designs as a transfer tape that embodies the three-dimensional appearance, the spread of colors, and the like.

Further, by providing a glitter layer between the support and the reversible thermochromic resin layer, or between the reversible thermochromic resin and the pressure-sensitive adhesive resin layer, or both, the color change can be further diversified. be able to. Further, the glittering layer is disclosed in Japanese Patent Application Laid-Open Nos. Hei 6-1067 and Hei 6
The technology disclosed in Japanese Patent Application Laid-Open No. 1068/1994 and Japanese Patent Application Laid-Open No. 6-8628 can be applied.

The pearlescent pigment layer used as an example of the glittering layer includes conventionally known titanium dioxide-coated mica, iron oxide-titanium dioxide-coated mica, iron oxide-coated mica, guanine, sericite, basic lead carbonate, acidic lead carbonate, Pearlescent pigments such as lead arsenate and bismuth oxychloride can be applied, and they are dispersed in a medium containing a binder and applied as a form of a paint, ink or the like. Alternatively, the pigment may be contained in a dispersed state in a resin.

The brilliant layer may be a layer having optical properties such as brilliancy, luminous reflectivity, light interference, iris, hologram, metallic luster, and fluorescence. The glitter layer is, specifically, a multilayer composite including a single layer of a group of continuous high refractive index glass beads as a lens in an organic resin medium as a binder and a light reflection layer behind the same. With a retroreflective property, a hologram having a light reflection layer on at least one side of a fine uneven pattern, a colored or colorless paint on the surface of the metallic mirror surface, the film thickness was thin enough to cause light interference Reflection on the surface of the metal film, such as a coating formed with a transparent coating, or an iris pattern and a radiation pattern in which a part of the transparent coating is thickened along a radiation centered on a desired point to form a thick portion. The reflected light is reflected on the transparent film surface and overlaps with the light, causing so-called “thin film interference”. In the transparent resin solution, fine aluminum, copper, brass, gold, silver,
Metal powder such as nickel, or plastic vapor-deposited powder, for example, polyester resin, phenol resin, metal chloride vapor-deposited on a vinyl chloride resin by a conventional method, coated with crushed powder, leafing type aluminum, copper, zinc,
Copper alloy coated with a binder, gold foil, metal foil such as silver foil, metallic luster pigment (for example, gold, silver, metallic red, metallic blue, metallic green, metallic green and other metallic colors in which the surface of natural mica is coated with titanium oxide ) Or a layer made of a fluorescent dye, a phosphorescent pigment, or a luminous pigment.

Further, a light stabilizer may be added to the reversible thermochromic resin layer, or a light stabilizer layer may be provided on the light stabilizer. Specifically, the light stabilizer layer is selected from an ultraviolet absorber, an antioxidant, an antioxidant, a singlet oxygen quencher, a superoxide anion quencher, an ozone quencher, a visible light absorber, and an infrared absorber. This is a layer in which the light stabilizer is fixed in a dispersed state. Furthermore, anti-aging agents, antistatic agents,
A function such as durability can be improved by adding a polarity imparting agent, a thixotropic agent, an antifoaming agent, a fluorescent whitening agent, a surfactant, a wax and the like as necessary.

The transfer tool incorporating the reversible thermochromic pressure-sensitive transfer tape includes at least a main body case, a reel wound with the reversible thermochromic pressure-sensitive transfer tape built in the main body case, and a support side of the transfer tape. It is composed of a pressing head. Therefore, when the transfer tape is pressed against a desired portion of the transfer object, and the main body case is moved in a state where the other surface of the transfer tape is pressed by the head portion, the reel around which the tape is wound rotates following the movement. Since the transfer tape is supplied to the head portion, the reversible thermochromic resin layer can be continuously provided on the transfer object.
After transferring the reversible thermochromic resin layer to a desired position, when the head is separated from the object to be transferred, the portion of the reversible thermochromic resin layer pressed by the head is transferred to the object to be transferred.
Further, the support remaining after transferring the reversible thermochromic resin layer,
You may make it accommodate in a main body case, and may discharge it outside a main body. When the support is housed in the main body, it is preferable that a reel for winding the support is incorporated in the main body, and a winding amount of the reel for winding is:
Equal to the sending amount of the reel around which the transfer tape is wound,
Or a slightly larger one is better. This is because the transfer of the transfer tape can be performed more easily by preventing the transfer tape from sagging and smoothing the movement of the transfer tape.

The main body case is mainly made of a plastic body, and is preferably transparent, translucent, or colored and transparent so that the remaining amount of the transfer tape inside can be visually recognized. Further, even if the main body is opaque, a through hole may be provided so that the remaining amount can be visually recognized.

As the reel, a disc-shaped reel made of plastic is preferably used, and a central portion of the reel is fixed in a main body case and rotatably held.

The head section may be provided integrally with the main body case, or may be provided separately. Further, the shape of the head portion may be a flat plate shape, a spherical shape, a roller shape, or the like, and the shape is not particularly limited.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION

Example 1 (see FIG. 1) A release layer 3 and a transparent resin layer of a vinyl chloride-vinyl acetate resin (thickness 5 μm) were formed on the surface of a PET film strip-shaped support 2.
m) 6, a reversible thermochromic resin layer 4 in which a reversible thermochromic pigment that changes color to black at 35 ° C or less and colorless at 35 ° C or higher is dispersed and applied to an acrylic pressure-sensitive adhesive is provided. A pressure transfer tape 1 was obtained.

After the reversible thermochromic resin layer 4 side of the reversible thermochromic pressure-sensitive transfer tape 1 is pasted on the paper surface on which the characters are written, and the support 2 is peeled off, the transparent resin layer 6 and the reversible The thermochromic resin layer 4 was transferred. The transparent resin layer 6
The paper surface on which the reversible thermochromic resin layer 4 has been transferred is 25 ° C.
At room temperature, the characters are not visible, but when heated to 35 ° C. or higher by touch, the reversible thermochromic pigment changes color to colorless, so that the characters can be visually recognized.
When the temperature is lowered to less than 35 ° C. in this state, the color of the reversible thermochromic resin layer becomes black again, and the characters in the lower layer become invisible. When the temperature is raised again to 35 ° C. or higher, the characters in the lower layer can be visually recognized and can be repeated.

Example 2 (See FIG. 2) A release layer 3 is provided on the front and back surfaces of a PET film strip-shaped support 2, and then one side of the support 2 on which the release layer 3 is provided is thermosensitively discolored. Thermochromic pigment [red (coloring temperature 20
C) ← → colorless (decolorization temperature 40 ° C.)] is dispersed in a styrene-butadiene resin, and a reversible thermochromic resin layer 4 and a pressure-sensitive adhesive resin layer 5 are sequentially provided to obtain a reversible thermochromic pressure-sensitive transfer tape 1. Was.

After the pressure-sensitive adhesive resin layer 5 side of the reversible thermochromic pressure-sensitive transfer tape 1 is pasted on the paper surface on which characters are written, and the support 2 is peeled off, the reversible thermochromic resin layer is formed on the characters. 4 was transferred. When the paper surface onto which the reversible thermochromic resin layer 4 has been transferred is rubbed with a finger and heated to 40 ° C. or higher, the reversible thermochromic resin layer is decolorized and the lower layer characters are visually recognized. The state in which the characters are visually recognized is stored and held at a temperature exceeding 20 ° C.

Next, when the surface of the paper where the characters are visible is cooled to 20 ° C. or less, the reversible thermochromic resin layer develops a red color and the characters become invisible. This state is 40
Stored at temperatures below ℃.

When the temperature reaches 40 ° C. or higher again, the characters in the lower layer become visible and can be repeated.

Example 3 (see FIG. 3) A release layer 3, Ir
Glitter layer 7 containing iodin 100 (manufactured by Merck Japan), reversible thermochromic pigment coated with a reversible thermochromic pigment that changes color to black at 35 ° C or less and colorless at 35 ° C or higher in a vinyl chloride-vinyl acetate resin solution The resin layer 4 and the urethane-based pressure-sensitive adhesive resin layer 5 were sequentially laminated to obtain a reversible thermochromic pressure-sensitive transfer tape 1.

After the pressure-sensitive adhesive resin layer 5 side of the reversible thermochromic pressure-sensitive transfer tape 1 is pasted on the paper surface on which the characters are written, and the support 2 is peeled off, the glitter layer 7 and the reversible heat The discolorable resin layer 4 was transferred. At room temperature of 25 ° C., characters are not visible and silver tape is visible at room temperature of 25 ° C. on the paper surface on which the glitter layer 7 and the reversible thermochromic resin layer 4 are transferred. When heated, the reversible thermochromic pigment changes color to colorless, so that characters can be visually recognized. Further, when the temperature is lowered to less than 35 ° C. in this state, the reversible thermochromic resin layer becomes silver again, and the characters in the lower layer become invisible. When the temperature is raised again to 35 ° C. or higher, the characters in the lower layer can be visually recognized and can be repeated.

Example 4 (see FIG. 4) A release layer 3, 35 ° C. was applied to the surface of the belt-shaped support 2 made of PE film.
A reversible thermochromic pigment in which a reversible thermochromic composition that changes color to colorless at 35 ° C. or more in a microcapsule and a non-color-changing red pigment are dispersed in a styrene-butadiene resin. Layer 4, pressure-sensitive adhesive resin layer 5
Were sequentially laminated to obtain a reversible thermochromic pressure-sensitive transfer tape 1.

After the pressure-sensitive adhesive resin layer 5 side of the reversible thermochromic pressure-sensitive transfer tape 1 was pasted on a paper surface, the support 2 was peeled off, and the reversible thermochromic resin layer 4 was transferred. The paper surface on which the reversible thermochromic resin layer has been transferred has a purple color at room temperature of 25 ° C.
When the temperature is raised to not less than ° C., the reversible thermochromic pigment changes color to colorless and thus to red. When the temperature is lowered to less than 35 ° C. in this state, the reversible thermochromic resin layer exhibits purple again. When heated to 35 ° C. or more again, the color changes to red and can be repeated.

Example 5 (see FIG. 5) A release layer 3, a transparent resin layer 6 made of vinyl chloride-vinyl acetate resin, on a surface of a belt-shaped support 2 made of PE film, blue at less than 35.degree. Reversible thermochromic pigment A in which a discolorable reversible thermochromic composition is encapsulated in microcapsules and reversible thermochromic pigment in which a reversible thermochromic composition that discolors red below 40 ° C and colorless above 40 ° C is encapsulated in microcapsules Reversible thermochromic resin layer 4 having acrylic pigment B dispersed in vinyl chloride-vinyl acetate resin, acrylic pressure-sensitive adhesive resin layer 5
Were sequentially provided to obtain a reversible thermochromic pressure-sensitive transfer tape 1.

After the pressure-sensitive adhesive resin layer 5 side of the reversible thermochromic pressure-sensitive transfer tape 1 is pasted on the paper surface on which the characters are written, and the support 2 is peeled off, the transparent resin layer 6 and the reversible The thermochromic resin layer 4 was transferred. The transparent resin layer 6
The paper surface on which the reversible thermochromic resin layer 4 has been transferred is 25 ° C.
At room temperature, the characters are invisible and appear purple, and when heated to 35 ° C. or higher by touch, the reversible thermochromic pigment A turns colorless, You can see the red color. Further, when heated to 40 ° C. or more by rubbing with a finger, the color of the reversible thermochromic resin layer is also erased, and the lower layer characters are visually recognized. In addition, when the temperature is lowered to less than 40 ° C. when left in this state, the reversible thermochromic pigment B is colored red again, and when the temperature is less than 35 ° C., the reversible thermochromic pigment A is colored blue. The underlying characters are not visible. When the color is heated again, the above-mentioned color change and the characters in the lower layer can be visually recognized and can be repeated.

Example 6 (see FIG. 6) A microcapsule encloses a release layer 3, a reversible thermochromic composition discoloring blue below 35 ° C. and colorless above 35 ° C., on the surface of a paper-like support 2 made of paper. A reversible thermochromic pressure-sensitive transfer tape 1 comprising a reversible thermochromic resin layer 4 in which the obtained reversible thermochromic pigment is dispersed in a styrene-butadiene resin, a star-shaped non-color-changing layer 8, and a pressure-sensitive adhesive resin layer 5 are sequentially provided. I got

After the pressure-sensitive adhesive resin layer 5 side of the reversible thermochromic pressure-sensitive transfer tape 1 is pasted on the paper, and the support 2 is peeled off, the reversible thermochromic resin layer 4 and the non-color-changing layer 8 are separated. Transcribed. The paper surface on which the reversible thermochromic resin layer 4 and the non-color-changing layer 8 are transferred has a blue color at a room temperature of 25 ° C., but when heated to 35 ° C. or more by touch,
Since the reversible thermochromic pigment changes color to colorless, a star-shaped image due to a star-shaped non-color-changing layer is seen. When the temperature is reduced to less than 35 ° C. in this state, the reversible thermochromic resin layer develops color again and exhibits a blue color. When heated to 35 ° C. or more again, a star-shaped image is visually recognized and can be repeated.

Example 7 (See FIG. 7) The release layers 3 and 35 were formed on the surface of the PET film strip-shaped support 2.
A reversible thermochromic pigment encapsulating a reversible thermochromic composition that turns blue below 35 ° C and colorless above 35 ° C is dispersed in a vinyl chloride-vinyl acetate resin solution and coated with a plurality of stars. A thermochromic resin layer 4 and a pressure-sensitive adhesive resin layer 5 were sequentially provided on the star-shaped reversible thermochromic resin layer 4 to obtain a reversible thermochromic pressure-sensitive transfer tape 1.

After the pressure-sensitive adhesive resin layer 5 side of the reversible thermochromic pressure-sensitive transfer tape 1 was pasted on the paper surface, the support 2 was peeled off, and the reversible thermochromic resin layer 4 was transferred. On a paper surface on which the reversible thermochromic resin layer 4 has been transferred, a blue star image is visually observed at room temperature of 25 ° C., but when heated to 35 ° C. or more by touching, the reversible thermochromic resin layer 4 is heated. Since the discolorable pigment changes color to colorless, the star-shaped image becomes invisible. When the temperature is lowered to less than 35 ° C. in this state, the reversible thermochromic resin layer develops color again and a blue star image is visually recognized. When heated to 35 ° C. or more again, a star-shaped image is visually recognized and can be repeated.

Example 8 (see FIG. 8) A microcapsule encloses a release layer 3, a reversible thermochromic composition which changes color to red at less than 35 ° C. and to colorless at 35 ° C. or more, on the surface of the cloth-like support 2 for fabric. A reversible thermochromic resin layer 4 in which a reversible thermochromic pigment was dispersed in a styrene-butadiene resin and a plurality of triangular pressure-sensitive adhesive resin layers 5 were sequentially provided to obtain a reversible thermochromic pressure-sensitive transfer tape 1.

After the pressure-sensitive adhesive resin layer 5 side of the reversible thermochromic pressure-sensitive transfer tape 1 was pasted on the paper, and the support 2 was peeled off, the triangular reversible thermochromic resin layer 4 was transferred. . The paper surface onto which the reversible thermochromic resin layer 4 has been transferred is 2
At room temperature of 5 ° C, a red triangle image is visible,
When heated to 35 ° C. or higher by touch, the reversible thermochromic pigment changes color to colorless, so that a triangular image becomes invisible. When the temperature is lowered to less than 35 ° C. in this state, the color of the reversible thermochromic resin layer is formed again, and a red triangle image is visually recognized. When the temperature is increased again to 35 ° C. or higher, a triangular image is visually recognized and can be repeated.

Embodiment 9 (See FIG. 9) The reversible thermochromic pressure-sensitive transfer tape 1 of Embodiment 2 is wound around a plastic disc-shaped reel 12, and the center of the reel is pivotally supported by a projection 111 in a main body case 11. The transfer tape 1 which is rotatably held and sent out from the reel 12 has a main body case 11 and a guide piece 11 in the main body case 11.
2 through the hole, leading to the outside through the hole, through the flat plate-shaped head portion 13 provided in the vicinity of the hole, into the inside of the body case 11 again through another hole, and further through the discharge hole provided separately to the outside. The transfer tool 10 is configured to be discharged into the transfer tool 10.

Using the transfer tool 10 formed as described above, the transfer tool 1 is pressed while pressing the head portion 13 on a paper surface.
0, the reel 12 in the main body case 11 rotates to supply the tape 1 onto the paper, and the head unit 1
The portion pressed by 3 is transferred to paper. Further, the transferred support 2 is discharged to the outside again through the inside of the main body case 11. As described above, the thermochromic resin layer could be easily and continuously transferred to the paper surface.

Example 10 The reversible thermochromic pressure-sensitive transfer tape of Example 4 was wound around a plastic disc-shaped reel, and the center of the reel was rotatably supported by being supported by a projection in a main body case. The transfer tape to be sent out is inserted between the main body case and the guide piece in the main body case to be led out from the hole,
A transfer tool having a configuration in which a roller-shaped head provided with a convex star-shaped image on the surface provided in the vicinity of the hole is again guided into the main body from another hole and discharged to the outside through a further provided discharge hole. Built in.

Using the transfer tool formed as described above,
When the transfer tool is moved while pressing the head portion on the paper surface, the reel in the main body case rotates to supply the tape onto the paper surface, and the star-shaped portion pressed by the head portion is transferred to the paper. You. After the transfer, the support is again discharged through the inside of the main body case. As described above, a star-shaped thermochromic image that easily and continuously changes color from purple to red could be transferred to the paper surface.

Example 11 The reversible thermochromic pressure-sensitive transfer tape of Example 7 was wound around a plastic disc-shaped reel, and the center of the reel was supported rotatably by a projection in the main body case. The transfer tape to be sent out is inserted between the main body case and the guide piece in the main body case to be led out from the hole,
The tape was again introduced into the main body from another hole through a flat plate-shaped head provided in the vicinity of the hole, and was incorporated in a transfer tool configured to be connected to a reel for winding the tape.

Using the transfer tool formed as described above,
When the transfer tool is moved while pressing the head portion on the paper surface, the reel in the main body case rotates to supply the tape onto the paper surface, and the portion pressed by the head portion is transferred to the paper. After the transfer, the support is wound again on a reel of the main body case. As described above, a star-shaped thermochromic image could be easily and continuously transferred to paper.

[0050]

The reversible thermochromic pressure-sensitive transfer tape of the present invention is a reversible thermochromic resin layer of an appropriate size which allows simple and continuous changes in temperature, touch or friction to reveal the underlying characters and figures. Can be provided on an object to be transferred, or a desired thermochromic image can be provided, and a reversible thermochromic pressure-sensitive transfer tape having a higher degree of freedom can be provided. In addition, by using the tape incorporated in a transfer tool, the reversible thermochromic resin layer or the thermochromic image can be provided more easily and more easily.

[Brief description of the drawings]

FIG. 1 is an explanatory longitudinal sectional view of one embodiment of a reversible thermochromic pressure-sensitive transfer tape of the present invention.

FIG. 2 is an explanatory longitudinal sectional view of another embodiment of the reversible thermochromic pressure-sensitive transfer tape of the present invention.

FIG. 3 is an explanatory longitudinal sectional view of another embodiment of the reversible thermochromic pressure-sensitive transfer tape of the present invention.

FIG. 4 is an explanatory longitudinal sectional view of another embodiment of the reversible thermochromic pressure-sensitive transfer tape of the present invention.

FIG. 5 is an explanatory longitudinal sectional view of another embodiment of the reversible thermochromic pressure-sensitive transfer tape of the present invention.

FIG. 6 is an explanatory longitudinal sectional view of another embodiment of the reversible thermochromic pressure-sensitive transfer tape of the present invention.

FIG. 7 is an explanatory longitudinal sectional view of another embodiment of the reversible thermochromic pressure-sensitive transfer tape of the present invention.

FIG. 8 is an explanatory longitudinal sectional view of another embodiment of the reversible thermochromic pressure-sensitive transfer tape of the present invention.

FIG. 9 is an explanatory longitudinal sectional view of a transfer tool incorporating the reversible thermochromic pressure-sensitive transfer tape of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 reversible thermochromic pressure-sensitive transfer tape 2 support 3 release layer 4 reversible thermochromic resin layer 5 pressure-sensitive adhesive resin layer 6 transparent resin layer 7 glitter layer 8 non-color-changing layer 10 transfer tool 11 main body case 111 protrusion 112 guide Piece 12 Reel 13 Head

Claims (11)

[Claims] 1. A reversible thermochromic pressure-sensitive transfer tape comprising a support and a reversible thermochromic resin layer containing a pressure-sensitive adhesive resin and a reversible thermochromic pigment directly or via a release layer. . 2. A reversible thermochromic color obtained by sequentially laminating a reversible thermochromic pigment and a resin containing a reversible thermochromic pigment and a resin, or a pressure-sensitive adhesive resin layer, directly or via a release layer on one side of a support. Pressure-sensitive transfer tape. 3. The reversible thermochromic pigment according to claim 1, wherein the pigment is 0.5 to 30.
3. The reversible thermochromic pressure-sensitive transfer tape according to claim 1, wherein the pigment having a particle size of .mu.m accounts for 95% by volume or more and is contained in the layer in an amount of 5 to 80% by weight. 4. The reversible thermochromic pigment according to claim 1, wherein said reversible thermochromic resin layer exhibits a hysteresis characteristic with a change in temperature and exhibits a tautomerism between a colored state and a colorless state.
Any of the reversible thermochromic pressure-sensitive transfer tapes. 5. The reversible thermochromic pressure-sensitive transfer tape according to claim 1, wherein a concealing material is contained in the reversible thermochromic resin layer. 6. The reversible thermochromic pressure-sensitive transfer tape according to claim 5, comprising 0.1 to 20% by weight of the concealing material with respect to 100% by weight of the reversible thermochromic pigment. 7. The color change temperature of the reversible thermochromic pigment is -2.
The reversible thermochromic pressure-sensitive transfer tape according to any one of claims 1 to 6, wherein the temperature is 0 to 70 ° C. 8. The reversible thermochromic resin layer and / or the pressure-sensitive adhesive resin layer is a design layer having an arbitrary shape.
Any of the reversible thermochromic pressure-sensitive transfer tapes. 9. The reversible thermochromic pressure-sensitive transfer tape according to claim 1, wherein the support has a band shape. 10. A reversible thermochromic pressure-sensitive transfer tape according to claim 1, which is rotatably held in a main body case having a head portion at one end, and a transfer fed from the reel. A transfer tool having a built-in reversible thermochromic pressure-sensitive transfer tape, which is configured so that the support side of the tape is pressed to transfer the reversible thermochromic resin layer to an object to be transferred. 11. The main body contains a reel for winding a support of the reversible thermochromic pressure-sensitive transfer tape.
Transfer tool with built-in zero reversible thermochromic pressure-sensitive transfer tape.