JPH08134410A - Adhesive tape and its production - Google Patents

Abstract

PURPOSE: To obtain an adhesive tape which has information display parts formed on the surface and can be produced in various types and in small lots. CONSTITUTION: The adhesive tape 10 contains a long tape base 14, a pressure- sensitive adhesive layer 16 formed on the rear of the tape base 14, a thermally color-forming layer 22 that forms display parts, and a release layer 18, both layers 22 and being formed on the surface side of the tape base 14. The tape base 14 is rolled in such a manner that the layer 18 and the layer 16 are opposed to each other for temporary adhesion.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adhesive tape and a method for manufacturing the same, and more particularly, for example, to a new adhesive tape having a display portion for displaying information formed on its surface and a method for manufacturing the same. .

[0002]

2. Description of the Related Art A conventional adhesive tape is formed by applying a pressure-sensitive adhesive to the back surface of a synthetic resin band material such as vinyl chloride or cellophane and winding it into a band shape.

[0003]

However, in the conventional adhesive tape, the display portion for displaying appropriate information is not formed on the surface thereof, and a large-scale device is required to manufacture it. Therefore, it was only possible to deal with relatively large lots. However, due to the diversification of consumers in recent years, there is a growing demand for a display unit having information displayed on the surface of an adhesive tape, and a demand for a large variety of products in a small lot. There is.

Therefore, a main object of the present invention is to provide an adhesive tape having a display portion for displaying information formed on its surface and capable of producing a large number of small lots of various kinds, and a method of manufacturing the same.

[0005]

An adhesive tape according to claim 1 has a long tape base material, an adhesive layer formed on the back surface of the tape base material, and an indication formed on the front surface side of the tape base material. And a release layer formed on the surface side of the tape base material facing the adhesive layer side when the tape base material is rolled up.

The adhesive tape according to claim 2 is the adhesive tape according to claim 1, wherein the release layer is formed by printing and applying a release agent.

The adhesive tape according to claim 3 is the adhesive tape according to claim 1, wherein the release layer is formed by laminating films or sheets having excellent releasability.

According to a fourth aspect of the present invention, there is provided a method for producing an adhesive tape, which comprises preparing a process sheet having at least one surface thereof having releasability, and forming a pressure-sensitive adhesive layer on the releasable surface of the process sheet; Step 2 of preparing a long tape base material having a back surface to which the agent layer is transferred and adhered, and stacking the back surface of the tape base material and the pressure-sensitive adhesive layer of the process sheet, and peeling the tape base material surface Step 3 of forming layers
And step 4 of peeling only the process sheet from the transferred pressure-sensitive adhesive layer surface on the back surface of the tape base material, and step 5 of winding the tape base material so that the peeling layer and the pressure-sensitive adhesive layer are temporarily adhered to each other. And a method for producing an adhesive tape, the method including:

In the method for manufacturing an adhesive tape according to a fifth aspect of the present invention, step 4 includes a step of slitting the tape base material and the process sheet laminated in steps 1 to 3 together with other layers formed to an appropriate width. It is a manufacturing method of the adhesive tape according to claim 4.

The method for manufacturing an adhesive tape according to claim 6, wherein step 4 includes a step of die-cutting the tape base material laminated by steps 1 to 3 into an appropriate width together with other layers formed. Is a method for manufacturing the adhesive tape.

The method of manufacturing an adhesive tape according to claim 7, wherein step 3 includes the step of printing and applying a release agent on the surface of the tape base material to form a release layer. It is a method for producing the adhesive tape described.

In the method for producing an adhesive tape according to claim 8, step 3 includes a step of laminating a film or sheet having excellent releasability on the surface of the tape base material to form a release layer. The method for producing the adhesive tape according to any one of 1.

[0013]

According to the invention of claim 1, the release layer side formed on the front surface side of the tape base material and the adhesive layer side formed on the back surface side of the tape base material face each other and are temporarily attached. Since the tape base material is wound, it is rewound. Further, since the thermosensitive coloring layer is formed on the surface of the tape substrate opposite to the adhesive layer, the tape substrate develops color by heating.

According to the invention of claim 2, since the thermosensitive coloring layer is formed on the surface of the tape base material and the peeling layer is formed on the surface of the thermosensitive coloring layer, the wound adhesive tape is rewound. .

According to the third aspect of the invention, since the release layer is formed on the surface of the tape base material, the wound adhesive tape is rewound.

According to the invention of claim 4, the tape base material is wound so that the peeling layer side and the pressure-sensitive adhesive layer side of the tape base material face each other and are temporarily attached, so that the rolled adhesive tape is wound. Will be returned.

According to the invention of claim 5, a process sheet,
The long tape base material is cut together with other layers.

According to the invention of claim 6, the process sheet is not cut, and the tape base material and the other layer are cut together.

According to the invention of claims 7 and 8, the tape base material is wound so that the release layer side and the pressure-sensitive adhesive layer side of the tape base material face each other and are temporarily adhered. Is rewound.

[0020]

According to the invention of claim 1, since the pressure-sensitive adhesive layer is formed by transferring to the back surface of the tape substrate, the pressure-sensitive adhesive layer can be formed on the surface of the tape substrate at room temperature. Therefore, when selecting a tape base material, it is possible to handle even ultra-thin tapes, etc. with relatively low heat resistance, and the solvent of the adhesive, etc. in the emulsion state before the adhesive layer was originally formed is transferred. Since it can be removed before the treatment, the range of choice of the pressure-sensitive adhesive forming the pressure-sensitive adhesive layer can be expanded regardless of the properties of the tape substrate. Further, in particular, a material such as thermal paper that develops heat can be selected as the tape base material, and it can be applied to any printer such as a printer that prints with a transfer foil that is relatively heated.

According to the invention of claim 2, since the release layer is formed on the surface of the tape substrate, the pressure-sensitive adhesive layer formed on the back surface of the tape substrate and the release layer formed on the surface thereof are opposed to each other. Even if the tape base material is rolled up so as to be temporarily attached, it can be rewound, and the adhesive tape can be cut into individual tape pieces for use.

According to the invention of claim 3, since the release layer is formed on the surface of the tape base material by a film or sheet having excellent releasability, the release layer formed on the front surface side of the tape base material Even if the tape base material is wound so that the pressure-sensitive adhesive layer formed on the back side faces and temporarily adheres, the tape base material can be rewound, and the adhesive tape can be cut into individual tape pieces for use. .

According to the fourth aspect of the present invention, the surface of the long tape base material is provided with an adhesive layer formed on the releasable surface of the process sheet and a surface to which the adhesive layer is transferred and adhered. Are overlapped with each other, and the adhesive layer is transferred from the surface of the process sheet to the back surface of the long tape substrate at room temperature,
The pressure-sensitive adhesive layer can be formed even with an extremely thin tape substrate having relatively low heat resistance. In addition, since the pressure-sensitive adhesive forming the pressure-sensitive adhesive layer can be transferred from the surface of the process sheet to remove the solvent contained when the pressure-sensitive adhesive is in a dissolved state to form the pressure-sensitive adhesive layer, the tape base can be formed by a solvent or the like. Does not affect the material. Therefore, the tape substrate and the pressure-sensitive adhesive forming the pressure-sensitive adhesive layer can be selected in a very wide range, and it is suitable for the production of a wide variety of products in a small amount. In addition, if the process sheet is used many times, the resources can be reused without becoming waste.

If the adhesive layer is formed as a label base material having a plurality of desired widths from the beginning, useless portions are generated on both side edges of each label base material. According to this, a wide and long tape base material and a process sheet are prepared, and they are laminated with an adhesive layer, and they are slit into an appropriate width to form a target tape base material. By doing so, the adhesive layer formed on the peelable surface of the process sheet can be formed leaving the left and right edges of the process sheet slightly, and the wasteful parts on both side edges can be reduced, which is the same as the initial purpose. It is extremely useful because it can form more tape base materials having different widths.

According to the sixth aspect of the present invention, a wide and long tape base material and a process sheet are prepared, they are laminated with an adhesive layer, and the tape base material is die-cut to an appropriate width. If the appropriate tape width is formed, the initial target tape can be appropriately formed.
Extremely useful.

According to the invention of claim 7, if a pressure-sensitive adhesive layer is formed on the releasable surface of the process sheet, and the pressure-sensitive adhesive layer is transferred and superposed on the back surface of the long tape base material to which it is adhered. The pressure-sensitive adhesive layer can be transferred from the process sheet to the back surface of the long tape substrate by the action of the release agent and / or the printing ink having excellent releasability.

According to the invention of claim 8, if a pressure-sensitive adhesive layer is formed on the releasable surface of the process sheet and the back surface of the long tape base material to which the pressure-sensitive adhesive layer is transferred and adhered is superposed. The pressure-sensitive adhesive layer can be transferred from the process sheet to the back surface of the long tape substrate by the action of the film or sheet having excellent releasability.

The above-mentioned objects, other objects, features and advantages of the present invention will become more apparent from the following detailed description of the embodiments with reference to the drawings.

[0029]

1 is a view showing an adhesive tape according to an embodiment of the present invention, in which (A) is a perspective view thereof and (B) is a sectional view thereof. 2 and 3
FIG. 3 is an illustrative view showing one example of a manufacturing method of the example shown in FIG.
FIG. 2 is a diagram showing the first half of the process, and FIG. 3 is a diagram showing the second half of the process.

The adhesive tape 10 of this embodiment has a plurality of display portions 12 formed intermittently, and is used by cutting at the boundaries of the respective display portions 12.

Then, the pressure-sensitive adhesive layer formed by transferring to the back surface of the long tape base material 14, that is, the adhesive layer 16 which has adhesiveness at room temperature and adheres to the adherend with a light pressure.
Is formed, a release agent layer 18 that is a release layer is formed on the front surface side of the tape base material 14, and further on the front surface side of the tape base material 14 between the tape base material 14 and the tape base material 14. The printing layer 20 is formed on a part of the surface.
The print layer 20 is intermittently formed at regular intervals between the display units 12 so that the display units 12 are formed at appropriate intervals. However, this print layer 20
May not be formed.

As shown in FIG. 1A, the adhesive tape 10 is a tape base so that the release agent layer 18 side and the pressure sensitive adhesive layer 16 face each other and are temporarily attached before being cut and used. The material 14 is wound in a roll shape. In this embodiment, a thermosensitive coloring layer 22 forming a display portion is formed on the surface of the tape base material 14 on the release agent layer side 18 side.

In this embodiment, the long tape base material 14 is, for example, a plastic film or sheet of paper, synthetic paper, cellophane, polystyrene, polyester or the like, or a long strip of aluminum foil or the like. In order to cut the continuous strip-shaped adhesive tape 10 at each display portion 12, it is necessary to use a material that can be cut by hand or by a mechanical device such as a cutter. In addition, perforations (not shown) such as perforations may be formed at predetermined intervals so that the tape can be cut into predetermined strips.

The pressure-sensitive adhesive layer 16 formed by transferring to the back surface of the tape base material 14 is for giving an adhesive force,
For example, a known adhesive such as an acrylic copolymer resin or a rubber adhesive is used.

The thermosensitive color forming layer 22 formed on the surface side of the tape substrate 14 is formed by applying and drying a thermosensitive color forming agent containing a mixture of a transparent or monochromatic leuco dye, an acidic substance and a binder. It In this case, examples of the leuco dye include crisital violet lactone, 3-indolino-3-P-dimethylaminophenyl-6-dimethylaminophthalide, 3-diethylamino-7-chlorofluorane, and 2-diethylamino-7.
-Cyclohexylaminofluorane, 3-diethylamino-5-methyl-7-t-butylfluorane, 3-diethylamino-6-methyl-7-anilinofluorane, 3
-Diethylamino-6-methyl-7-P-butylanilinofluorane and the like.

As the acidic substance, for example, 2,
2-bis (4'-oxyphenyl) propane, 4-phenylphenol, 4-hydroxyacetophenone, 2,
2'-dihydroxydiphenyl, 2,2'-methylenebis (4-methyl-6-t-butylphenol), 4,
4'isopropylidenediphenol, 4,4'-isopropylidene bis (2-chlorophenol), 4,4'-
Isopropylidene bis (2-methylphenol), 4,
4'-ethylenebis (2-methylphenol), 4,
4'-thiobis (6-t-butyl-3-methylphenol) and the like can be mentioned.

Further, as the binder, for example, polyvinyl alcohol, methoxy cellulose, hydroxyethyl cellulose, carboxymethyl cellulose, polyacrylamide, polyacrylic acid, starch, gelatin,
Examples thereof include water-soluble or aqueous emulsions of polystyrene, vinyl chloride-vinyl acetate copolymer and the like. The thermosensitive coloring layer 22 can be colored by heating it with a thermal head of a printer or the like.

On the surface of the tape substrate 14 on the thermosensitive coloring layer 22 side, there is further formed a printing layer 20 which forms each display portion 12 with a boundary between each display portion 12 separated. This print layer 20
Is formed by printing with a known printing method such as planographic printing, letterpress printing or offset printing using a general printing ink. The release agent layer 18 formed on the surface side of the tape substrate 14, that is, on the surfaces of the thermosensitive coloring layer 22 and the printing layer 20 can be cured at a temperature that does not affect the thermosensitive coloring layer 22, for example. It is formed by printing and applying a release agent such as a silicone resin.

In this embodiment, as the release agent forming the release agent layer 18, ultraviolet rays or electron beams such as UV silicon (so-called ultraviolet curing type silicon) and EB silicon (so-called electron beam curing type silicon) are used. It is preferable to select a material which is cured by the method and does not affect the thermosensitive coloring layer 22. The release layer may be formed by laminating and adhering films or sheets having excellent releasability.

Next, an example of the manufacturing method shown in FIG. 1 will be described mainly with reference to FIGS.

First, a long strip-shaped process sheet 24 made of paper, film, sheet-shaped plastic, or the like, which is rolled up in a roll, is rolled up and prepared. The process sheet 24 is used only in the manufacturing process and does not remain in the completed adhesive tape 10. Then, a release agent such as a silicone resin or a fluorine resin is printed and applied on the surface of the process sheet 24 to form a release layer 24a having a release property.

Next, the release layer 24a of the process sheet 24
The adhesive 26 that forms the adhesive layer 16 is printed and applied on the surface of the adhesive coating device 100. The adhesive coating device 100 includes two rollers 102a and 102b. Roller 102
The lower part of a is immersed in the adhesive 26 stored in the pan 104. Therefore, the rollers 102a and 102
By rotating b, the pressure-sensitive adhesive 26 is applied by printing onto the surface of the release layer 24a of the process sheet 24 guided to that portion. As the adhesive coating device, a coating device such as a gravure roll coater, a reverse roll coater, an air knife coater or the like may be used, or a known printing machine such as a screen printing machine may be used.

The process sheet 24 on which the adhesive 26 is printed and applied is, for example, the dryer 10 including a heater.
Guided to 6. In the dryer 106, the adhesive 26 printed and applied on the process sheet 24 is dried to form the adhesive layer 16. When an adhesive containing a water-soluble resin such as EVA, vinyl acetate, acrylic, or a solvent-based adhesive made of vinyl chloride, urethane, acrylic, etc. is used as the adhesive 26, a dryer is used to When using an EVA hot-melt adhesive, a cooler is used.

On the release layer 24a side of the process sheet 24 on which the pressure-sensitive adhesive layer 16 is formed in this manner, the base paper 14a to be the tape base material 14 is laminated. Base paper 14a of tape base material 14
Is formed in the same width as the process sheet 24, and the thermosensitive coloring layer 22 is already formed on the surface of the base paper 14a of the tape base material 14.
Are formed. The thermosensitive coloring layer 22 is formed on the side opposite to the side of the pressure-sensitive adhesive layer 26 described above.

In this way, the process sheet 24 and the adhesive 26
The layered product of the above layer and the base paper 14a to be the tape base material 14 has a width which is approximately similar to the width of the adhesive tape 10 which is the final product in the laminated state before being led to the next process such as printing. Slit with a slitter 108 so that
After slitting, it is rolled up.

A laminate 30 formed by laminating and temporarily adhering the process sheet 24 and a continuous body of the tape base material 14 with a layer of the adhesive 26 is wound in a roll shape, and the laminate 30 is wound in a roll shape. In this state, the sheet is guided to the printing and stripping agent coating device in the next step shown in FIG.

Next, the roll-shaped laminate 30 obtained by winding the laminate 30 into a laminated roll is loaded into the manufacturing apparatus shown in FIG. 3, and the laminate 30 is rewound to form the printing layer 20. Of the printer 110. This printing device 1
Reference numeral 10 is a unit for printing each display unit 12. For example, an image line composed of characters such as a product name and an appropriate design is printed on a lithographic printing plate,
Printing is performed by a known printing device such as letterpress or offset printing.

Subsequently, the laminate 30 having the print layer 20 formed thereon is guided to a release agent coating device 120 for forming the release agent layer 18 on the surface of the print layer 20 of the tape substrate 14. The release agent applying device 120 includes a main roller 122.
a and a roller 122b provided to face the main roller 122a. Then, the main roller 122a
The lower part thereof is dipped in the release agent 32 stored in the pan 124, and the release agent 32 is applied by the main roller 122a to the surface of the tape base material 14 of the laminate 30 sandwiched between the main roller 122a and the roller 122b. To be done. And
The laminate 30 printed with the release agent 32 is moved to a dryer 126 including a heater, for example. Dryer 126
Then, the release agent 32 printed and applied to the laminate is dried to form the release agent layer 18. Then, the release agent layer 18
The adhesive tape 10 formed by laminating the laminated body 30 is then guided to the process sheet removing device 130. The process sheet removing device 130 includes a roller 132, and peels the process sheet 24 from the surface of the pressure-sensitive adhesive layer 16 of the laminate 30 and winds it into a roll so that it can be reused separately.

On the other hand, the laminate constituting the adhesive tape 10 is rolled up while cutting both side edges or one side edge with the slitter 140 so that the width of the adhesive tape is further optimized.

[Brief description of drawings]

FIG. 1 is a diagram showing an adhesive tape that is an embodiment of the present invention, (A) is a perspective view thereof, and (B) is a sectional view thereof.

2 is an illustrative view showing one example of the manufacturing method of the example shown in FIG. 1, showing the first half of the process. FIG.

FIG. 3 is an illustrative view showing one example of the manufacturing method of the example shown in FIG. 1, and shows the latter half of the process.

[Explanation of symbols]

 10 Adhesive Tape 12 Display Part 14 Tape Base Material 16 Adhesive Layer 18 Release Layer 20 Printing Layer 22 Thermosensitive Coloring Layer 24 Process Sheet 24a Release Layer 26 Adhesive 30 Laminate 32 Release Agent 100 Adhesive Applicator 102 Roller 104 Pan 106 Dryer 108 Slitter 110 Printing Device 120 Release Agent Applying Device 122 Main Roller 124 Pan 126 Dryer 130 Process Sheet Removing Device 132 Roller 140 Slitting Machine

Claims (8)

[Claims] 1. A long tape base, a pressure-sensitive adhesive layer formed on the back surface of the tape base, and a thermosensitive coloring layer forming a display portion formed on the front surface side of the tape base. An adhesive tape, comprising: a pressure sensitive adhesive layer side and a release layer formed on a surface side of the tape base material facing the pressure sensitive adhesive layer side when the tape base material is rolled up. 2. The adhesive tape according to claim 1, wherein the release layer is formed by printing and applying a release agent. 3. The adhesive tape according to claim 1, wherein the release layer is formed by laminating films or sheets having excellent release properties. 4. A step 1 in which at least one surface of the process sheet has a peelable surface, and a pressure-sensitive adhesive layer is formed on the peelable surface of the process sheet, and the pressure-sensitive adhesive layer is transferred and adhered. Step 2 of preparing a long tape base material having a back surface to be overlapped with the back surface of the tape base material and the adhesive layer of the process sheet, and forming a release layer on the front surface of the tape base material. Three
And step 4 of peeling only the process sheet from the transferred pressure-sensitive adhesive layer surface of the back surface of the tape base material, and the tape base material so that the peeling layer and the pressure-sensitive adhesive layer face each other and are temporarily attached. A method of manufacturing an adhesive tape, which comprises: 5. The step 4 includes a step of slitting the tape base material and the process sheet laminated in steps 1 to 3 together with other formed layers into an appropriate width.
The method for manufacturing the adhesive tape according to claim 4. 6. The method for producing an adhesive tape according to claim 4, wherein step 4 includes a step of die-cutting the tape base material laminated in steps 1 to 3 together with other layers formed into a suitable width. 7. The method of manufacturing an adhesive tape according to claim 4, wherein step 3 includes a step of printing and applying a release agent on the surface of the tape base material to form a release layer. 8. The adhesive tape according to claim 4, wherein step 3 includes a step of forming a release layer by laminating a film or sheet having excellent releasability on the surface of the tape base material. Manufacturing method.