JPH0550751B2 - - Google Patents

Description

[Detailed description of the invention]

(Industrial Application Field) The present invention relates to a method for manufacturing a breakable adhesive material in which the breakable layer below the surface layer is easily destroyed when the surface layer is peeled off by hand. The present invention relates to a method for manufacturing easily breakable adhesive suitable for use as a replacement prevention sticker to be attached to the opening of a. (Prior art) Conventionally, labels used as price tags and the like to prevent replacement have been made by making appropriate perforations or cuts in the surface base material, which can be peeled off at a store, etc., and replaced with a price tag for another material. And Tokichi is
There are known products that are separated or damaged at perforations or cuts, making it possible to tell at a glance that they have been attempted to be removed. On the other hand, the adhesive paper attached to the opening of the container to indicate its unopened status may vary depending on the material of the opening of the package and its surface treatment method.
For example, you can pick up a product displayed on a display shelf at a store, easily peel it off on the spot, and after getting foreign objects into the packaging, you can reapply it so that it is not obvious that it was removed. Therefore, you cannot tell whether the package has already been opened just by looking at the sticker from the outside. Therefore, there is a risk that the contents of the package may be tampered with. For example, poisonous substances may be mixed in with sweets in a package. Therefore, recently, adhesive labels that can be seen to be peeled off after pasting have come on the market, and are disclosed in Japanese Utility Model Application Publication No. 1077/1983. This adhesive label is attached by peeling off the release sheet and pressing the exposed surface of the adhesive coating against the opening (not shown) of the package. Then, when the adhesive label affixed to the opening is peeled off, only the part of the deposited film that was not directly deposited on the film substrate by the release agent coating is adhered to the opening by the adhesive coating. remain as is. Furthermore, when the opening is opened, the remaining vapor deposited film stuck there is cut or torn, and this makes it possible to determine whether the opening has been opened.(Problem to be Solved by the Invention) However, With such adhesive labels, when the film is peeled off, part of the vapor deposited film is difficult to remain on the adhesive coating surface, and the label is peeled off while remaining adhered to the film surface, resulting in damage due to the remaining vapor deposition film. It is not easy to form characters, etc. Furthermore, when the film base material is peeled off, part of the adhesive coating remains on the adhered part of the adhered material, and the surface of the exposed adhesive coating becomes sticky and collects dust. It had Therefore, the main object of the present invention is to provide a method for producing an easily breakable adhesive material that can be seen to be peeled off after adhesion, and does not show any adhesive on the peeled surface and does not become sticky. . (Means for Solving the Problems) In the present invention, the adhesive force between the first peeling layer and the easily broken layer is a, the adhesive force between the second peeling layer and the covering layer is b, and the adhesive layer is A manufacturing method that satisfies the following formula a>b>c, where c is the force required to separate the adhesive layer from the third release layer when bonded to the third release layer, (a) (b) forming a second release layer on a part of the surface of the easily breakable layer; (c) forming a coating layer on other parts of the surface of the easily destructible layer and the surface of the second release layer; (d) forming an adhesive layer on the surface of the coating layer; ) A method for producing an easily destructible adhesive material, comprising the step of forming a third release layer on a surface of the adhesive base material opposite to the surface on which the first release layer is formed. (Function) The adhesive strength between the first release layer and the easily broken layer is
The adhesion force between the second release layer and the covering layer is greater than that of the second release layer, and the second release layer is formed with a part removed from the surface of the easily broken layer, so it does not adhere to the adhered material. The adhesion strength of each part of the attached easily breakable adhesive material differs between the part where the second release layer is formed and the part where the second release layer is not formed, and when the surface adhesive base material is peeled off. , the easily broken layer is torn at the boundary between the part where the second release layer is formed and the part where it is missing, and the easily broken layer and the coating layer in the part where the second release layer is missing are on the surface of the adhered material. remains, and other parts peel off from the coating layer. Further, the third peeling layer moves so as not to cause the adhesive layer to adhere to the adhesive base material rolled up into a roll. (Effects of the Invention) According to the manufacturing method according to the present invention, an easily destructible adhesive material having the following characteristic structure can be manufactured. In the easily destructible adhesive material manufactured by the manufacturing method according to the present invention, the adhesive force between the first release layer and the easily destructible layer is greater than the adhesive force between the second release layer and the covering layer. Since the second release layer is large and is formed on the surface of the easy-to-break layer with a part removed, the adhesive force between the covering layer and the easy-to-break layer is limited to the part where the second release layer is formed. The adhesion strength is different between the adhesive layer and the deleted portion, and when the adhesive base material is peeled off, only the easily broken layer in the portion where the second peeling layer is formed is peeled off from the covering layer. Therefore, the easily broken layer is
It can be seen that the easily broken layer has been separated because it is torn and separated from other parts and cannot be reattached to the original state. Therefore, it can be seen at a glance that the easily broken adhesive has been peeled off, and it can also be easily determined whether a poisonous substance or the like has been mixed into the package. In addition, since a coating layer is formed over the entire surface of the adhesive layer, the surface of the adhesive layer will not be exposed and sticky after the surface material is peeled off, unlike conventional methods. Furthermore, it becomes impossible to reattach the surface material due to the adhesive force of the exposed adhesive layer. Furthermore, since the adhesive layer is not adhered to the adhesive base material by the third release layer, it is possible to protect the adhesive layer by rolling the entire product into a roll without using an unnecessary release sheet later. can. The above objects, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings. (Example) FIG. 1 is a sectional view of an adhesive material manufactured by the manufacturing method according to the present invention. The adhesive material 10 of this example is used as a sticker or the like, and as shown in FIG. 10, adhesive material 10B is placed on adhesive material 10A.
It is rolled up into a roll, just like when it is rolled up. This adhesive material 10 includes an adhesive layer 14, a covering layer 16,
The second release layer 18, the easily broken layer 20, the first release layer 22, and the adhesive base material 24 are laminated in this order. A third release layer 12 is formed on the surface of the adhesive base material 24, which is bonded to the adhesive layer 14 of the adhesive material 10B to be rolled up. Furthermore, a printed layer 26 is provided on the surface of the adhesive base material 24.
is formed. The following structures are formed in the same manner one after another. The adhesion base material 24 is formed to prevent the easily broken layer 20 from being cut or pulled away, and is attached to the easily broken layer 2 through the first peeling layer 22.
It is tentatively labeled as 0. The adhesive base material 24 may be, for example, a relatively stiff film such as polyethylene terephthalate film, polyester or nylon film.
Materials that do not shrink easily due to heat, such as paper or synthetic paper, can be used, but as described later, when this adhesive material 10 is peeled off, traces of peeling will be left on the surface side of the adhesive base material 24. For better visibility, it is better to choose transparent or translucent ones. In this way, a part of the easily broken layer 20 remains on the adhered material A, and a part of it is easily peeled off from the adhered material A and stuck to the adhesive base material 24. It's easy to understand and convenient. The first peeling layer 22 temporarily attaches the adhesive base material 24 and the easily destructible layer 20 to a state where they cannot be reattached, and facilitates the peeling of the adhesive base material 24 and the easily destructible layer 20. For example, it consists of a release agent layer coated with a release agent such as silicone resin, fluororesin, paraffin, wax, etc., and the adhesive base 24
and the easily destructible layer 20. The easily destructible layer 20 is a vapor deposited layer formed by vacuum vapor depositing an evaporative substance such as aluminum, silver, zinc, etc.
It is a highly breakable layer that can be easily torn by hand. This easily destructible layer 20 may be formed by, for example, a solid silver printing layer instead of the vapor deposited film formed by the vacuum evaporation method described above, or may be formed by using other UV type ink. It can also be formed by coating with a printed film or other resin. However, when this pasting member 10 is bent and pasted on a bent part, the pasting base material 24 is relatively hard to peel off when it tries to restore to its original state against the adhesive force of this easily breakable layer 20. Something that is flexible is good. Another example of the easily breakable layer 20 is a synthetic resin such as a copolymer resin of vinyl chloride and acrylic in which metal powder is mixed into the synthetic resin so that it can be cut or torn by applying a relatively weak force. Examples include a resin layer coated with. The second release layer 18 is formed by coating a part of the surface of the easily destructible layer 20 with a release agent such as silicone resin, fluororesin, wax, or the like by printing a pattern. For example, by pattern printing and coating lines such as letters or pictures such as "opened", the adhesive base material 24 is peeled off and the easily broken layer 20 is destroyed, as described below. In this case, if the above-mentioned characters such as "opened" are made to appear, the adhesive material 10 can be made to meet the purpose of use even more. The coating layer 16 is a layer that covers the adhesive layer 14 in order to prevent the adhesive layer 14 from being exposed to the surface and becoming sticky when the adhesive base material 24 is peeled off as described later. This coating layer 16 is made of a resin such as urethane resin, EVA resin, PVA, salt vinyl acetate, acrylic, nitrocellulose, polyamide, acrylic, etc., and is formed by the second peeling layer 18 of the easily broken layer 20. It is formed by coating the surface. The adhesive layer 14 is for giving adhesive force to the adhesive material 10 to adhere to the material to be adhered A, and is made of an adhesive layer coated with a pressure-sensitive adhesive, for example, and is formed on one side of the coating layer 16. is formed on the surface of In this adhesive material 10, the adhesive force between the first release layer 22 and the easily broken layer 20 is a, the adhesive force between the second release layer 18 and the covering layer 16 is b, and the adhesive force between the adhesive layer 14 is d, and of the adjacent adhesive materials 10A and 10B, c is the force required to peel off the adhesive layer 14 of the adhesive material 10B from the third peeling layer 12 of the adhesive material 10A bonded to it, and When the force required to destroy the layer 20 is e, the structure is such that the following formula c<b<e<a<d is satisfied. To use this adhesive material 10, first pull out the rolled adhesive material 10B, and then
After pulling out a predetermined length while peeling from 0A, a predetermined adhesive piece 10a is attached at a cut 28 such as a perforation.
The adhesive layer 14 is used to attach it as a price tag or to the opening of a package of sweets, as shown in FIGS. 9a, b, and c, for example. In this manner, in order to open the opening of the package to which the adhesive material 10 is attached, it is necessary to peel off the attached adhesive material 10 and open the sealed portion. In this case, the easily broken layer 20 is the first release layer 22
The easily broken layer 20 is temporarily attached to the adhesive base material 24 via the
is strongly adhered to the covering layer 16, and the second release layer 1
In the region where 8 is formed, the covering layer 16
The bond is weaker than the part that is directly bonded. Therefore, as shown in FIG.
The easily broken layer 20 is torn at the boundary between the easily broken layer 20 in the part and the easily broken layer 20 in the part directly adhered to the covering layer 16. 16 and a part of the easily broken layer 20 (the second peeling layer 18
2) is peeled off from the adhered material A while remaining adhered to the adhesive base material 24. Then, in the easily broken layer 20, the portion where the second release layer 18 is not formed remains stuck to the adhered material A as it is. Therefore, once the adhesive base material 24 is peeled off, the easily broken layer 20 is torn at the boundary between the part where the second peeling layer 18 is formed and the part where it is not formed, and then the easily broken layer 20 is torn again. Since the adhesive base material 24 cannot be reattached to the surface of the coating layer 16 and cannot be restored to its original state, it can be clearly seen that the package has been opened. In this specification, sheets, films, and their equivalents are collectively referred to as "sheets" or "films," indicating the most suitable one in each case. Furthermore, when the term "sheet" is used, it does not only refer to single-wafer type sheets, but also includes roll-up type (web) types. An embodiment of the present invention will be described below based on an example of an adhesive manufacturing apparatus according to the present invention. FIG. 3 through FIG. 5 are illustrative views showing an example of an apparatus for manufacturing the laminate 30 used in the embodiment of the present invention. This laminate 30 has the following features on the surface of the adhesive base material 24:
The first release layer 22, the easily broken layer 20, the second release layer 18, and the coating layer 16 were laminated in that order, and the third release layer 12 was laminated on the opposite surface of the adhesive base material 24. It is something. The apparatus 100 includes a holding roller 102 for holding the adhesive material 24a forming the strip-shaped adhesive base material 24 in a roll shape. One end of the adhesive material 24 a held by the holding roller 102 is unwound and guided to the release agent coating device 104 . The release agent application device 104 is for printing and applying a release agent 22a such as silicone resin, fluororesin, paraffin, wax, etc. on one surface of the adhesive material 24a, and includes two rollers 106a and 106b, storage 108, and applies release agent 22a while rotating rollers 106a, 106b. Note that the release agent coating device 104
As a coating device, a coating device such as a gravure roll coater or a reverse roll coater may be used, or a known printing machine such as an offset printing machine or a screen printing machine may be used. This release agent 22a is then led to a dryer 110 that includes a heater and is dried. In the dryer 110, the release agent 22a printed and coated on the adhesive material 24a is dried to form the first release layer 22. The adhesive material 24a on which the first peeling layer 22 has been formed in this manner is guided to the winding device 112. Next, in order to laminate the third release layer 12 again, a device similar to the above-described release agent coating device 104 is loaded, and in the same manner as described above, the release agent 22a has a different peeling force from that of the above-mentioned release agent 22a. The third release layer 12 is formed by printing and applying a release agent. As the release agent for forming the third release layer 12, a release agent containing silicone resin, fluororesin, or the like as a main component is selected. The adhesive material 24a on which the first peeling layer 22 and the third peeling layer 12 have been formed in this manner is then sent to the laminating device 120 where the easily broken layer 20 is formed. The laminating apparatus 120 may be, for example, a semi-continuous vacuum evaporation apparatus having a structure in which both a batch type and a continuous winding type are used. The structure of this device can be broadly classified from a functional perspective: an internal device including a vacuum tank 122, a winding shaft 126 in an upper chamber 124, a delivery shaft 128, and a cooling drum 130;
Evaporation source 134 and heating device in 2, vacuum exhaust system 1
36, and those equipped with various other instruments. With this semi-continuous vacuum evaporation device, the delivery shaft 1
The adhesive material 24a fed out from 28 passes through the slit via the cooling drum 130, and enters the lower chamber 132.
Aluminum, silver,
The easily broken layer 20 is formed by vacuum evaporating zinc, other metals, or metal compounds as evaporation substances.
After the vapor deposition, the adhesive material 24a is returned to the upper chamber 124 and wound around the winding shaft 126. Other examples of the laminating apparatus include, for example, a printing apparatus such as an offset printing machine and a coating apparatus as shown in FIG. The laminating device 220 shown in FIG.
On the surface of the first peeling layer 22 formed on the surface of
Printing the easily breakable material 20a forming the easily breakable layer 20,
It is for coating, and the main roller 222
a, and a roller 222b provided opposite to the main roller 222a. The lower part of the main roller 222a is immersed in the easily broken material 20a stored in the storage tank 224.
22b and the roller 222b, the roller 2
At 22b, the breakable material 20a is printed and applied.
As this easily destructible material 20a, as described above,
Examples include inks such as UV type ink and resins such as synthetic resins containing metal powder. Then, the adhesive material 24a on which the easily destructible material 20a is printed and applied is placed in a dryer 24 including a heater, for example.
6. In the dryer 226, the pasting material 24a
The easily destructible material 20a printed and coated on is dried,
It is formed as an easily breakable layer 20 and then wound up on a winding roller 228 . The roll of the adhesive base material 24 on which the easily broken layer 20 has been formed is sent to a laminating device 140 shown in FIG. 5. A laminating apparatus 140 shown in FIG. 5 includes a device 142 for loading the roll of adhesive material 24. As shown in FIG. The adhesive base material 24 pulled out from the roll body loading device 142 that loads this roll body is transferred to the next release agent coating device 14.
4. The release agent application device 144 is for printing and applying a release agent 18a such as silicone resin, fluororesin, paraffin, wax, etc. on one surface of the easily broken layer 20, and 2
two rollers 146a and 146b, storage tank 148
The release agent 18a is applied while rotating the rollers 146a and 146b.
a is a dryer 149 including a heater provided next.
and dried. Note that the release agent coating device 1
As 44, a coating device such as a gravure roll coater or a reverse roll coater may be used, or a known printing machine such as an offset printing machine or a screen printing machine may be used. Stripping agent 18a forming this second stripping tank 18
is partially printed and applied on the surface of the easily breakable tank 20, and is formed by, for example, pattern-printing lines such as "opened". The adhesive base material 24 coated with the release agent 18a is sent to a lamination device 150 that laminates the coating material 16a forming the next coating tank 16. This coating material laminating device 150 includes a roller 152 that applies a coating material 16a such as EVA resin. In this laminating apparatus 150, the coating material 16a is coated on the surface of the easily breakable layer 20 coated with the release agent 18a forming the second release layer 18 while being pressed by the roller 154, and the coating material 16a is applied while being pressed by the roller 154, and the coating material 16a is melted. Cooler 1 installed next in the state
56. The cooler 156 is for cooling the covering material 16a. In the cooler 156, the coating material 16a is cooled and solidified to form the coating layer 16,
A laminate 30 is formed on the surface of the adhesive base material 24 by sequentially laminating the first release layer 22, the easily broken layer 20, the second release layer 18, and the coating layer 16. This laminate 30 is wound up on a winding roller 158. The laminate 30 thus formed is then loaded into a laminator 160 shown in FIG. 6. FIG. 6 is an illustrative view showing a laminating apparatus 160 that laminates the adhesive layer 14 on the laminate 30. This stacking device 160 includes a roll loading device 162 for loading rolls of the laminate 30. The laminate 30 pulled out from the roll loading device 162 of the laminate 30 is guided to an adhesive coating device 166, which is a coating device for the adhesive 14, with the surface of the coating layer 16 set as the bottom surface in FIG. In this adhesive application device 166, an adhesive such as a pressure-sensitive adhesive is printed and applied. This adhesive application device 166 is for applying the adhesive 14a to the surface of the coating layer 16 of the laminate 30, and includes a main roller 168a and a roller 168b provided opposite to the main roller 168a. include. And the main roller 168a
The lower part of the adhesive 1 is stored in the storage tank 170.
The adhesive 14a is printed and applied by the main roller 168a onto the surface of the coating tank 16 of the laminate 30 which is immersed in the coating tank 4a and sandwiched between the main roller 168a and the roller 168b. Then, the laminate 30 printed with the adhesive 14a is led to a dryer 172 including, for example, a heater. In the dryer 172, the adhesive 14a printed and applied to the laminate 30 is dried to form the adhesive layer 14, and then the adhesive layer 14 and the laminate 30 are dried.
The laminate is taken up on a take-up roller 174. In order to make a label using the laminate etc. wound up in this manner, it is sufficient to load it into a label manufacturing apparatus including a printer for this laminate. FIG. 7 is an illustrative view showing an example of an apparatus for manufacturing labels. Such a label manufacturing device 180 includes a peeling seed 1
2 are laminated on the surface of the adhesive layer 14.
It includes a holding device 182 for loading zero rolls. Release sheet 1 pulled out from this holding device 182
2 and the laminate 30 is printed in the printing device 1.
84. This printing device 184 is comprised of a known printing machine such as an offset printing machine. The printing device 184 forms a printing layer 26 on the surface of the adhesive base material 24 on which lines such as "product name" are printed, for example. The laminate on which the printed layer 26 has been formed in this manner is guided to a die cutter 186. The die cutting machine 186 includes a so-called die cutter having a cutting blade, and uses the die cutter to cut the adhesive base material 24 and the first release layer 2.
2. Easily broken layer 20, coating layer 16 and adhesive layer 14
Appropriate cuts are made. Note that the printing layer 26
may be formed in advance on the surface of the adhesive base material 24 before forming the third release layer 12. Note that the die cutting machine 186 is a roll with a cutting blade,
A so-called die roll may be used. The cut laminate is separated into an unnecessary part and a label 10 (necessary part) by rollers 188a and 188b, and the unnecessary part is wound up into a roll by a scraping roller 190 to form a label 10. The (required portion) is temporarily attached to the release sheet 12 and wound up into a roll by the winding roller 192. Note that the cutter 186 and the take-up roller 192 may be replaced by a score forming machine. The scoring machine includes a cutting blade. This cutting blade is used to make cuts in the adhesive base material 24, the first peeling layer 22, the easily broken layer 20, the covering layer 16, and the adhesive layer 14 to form each label piece 10a. Here, more specifically, it is as follows. (1) Using a polyethylene terephthalate film with a thickness of about 50μ as the adhesive base material, apply silicone resin to one side of the film to form the first peeling layer, and then to form the easily broken layer. , aluminum was vacuum-deposited on the first release layer to form a breakable layer of about 7 μm. Furthermore, on the surface of the easily breakable layer formed by vacuum-depositing aluminum, a silicone resin manufactured by Toray Industries, Inc., which has a lower peeling force than the silicone resin forming the first peeling layer, is applied to a dry film thickness of 0.1 to
A second release layer is formed by part-coating to a thickness of 5μ. On top of that, the EVA listed in Table-1 below
A coating layer is formed by coating a synthetic resin whose main component is resin to a thickness of about 5 to 50 microns.
Thereafter, an acrylic adhesive (BPS-5127) manufactured by Toyo Ink was coated to a dry film thickness of 5 to 50 μm to form an adhesive layer. At this time, the adhesive force (a) between the first release layer and the easily broken layer
is approximately 50 g, the adhesive force between the second release layer and the coating layer (b) is approximately 30 g, and the adhesive force of the adhesive layer (d)
was about 1000 g, and the force (c) required to peel the release sheet from the adhesive layer was about 20 g. The thus constituted pressure-sensitive adhesive material was cut into label pieces and affixed to a material to be affixed (paper box, etc.). At this time, the adhesive force (d) to the adhered material and the adhesive force (d') between the coating layer and the adhesive layer were about 1000 g. When the pasted label piece was forcibly peeled off from the material to which it was pasted, the easily broken layer was torn at the border between the part where the second peeling layer was formed and the part where it was not, and the second peeling occurred. At the layer site, the torn easily destructible layer was peeled off from the adhered material together with the adhesive base material.

【table】

[Table] May be.
(2) Using a polyester film with a thickness of about 50μ as the adhesive base material, apply silicone resin to one surface to form the first release layer, and then to form the easily broken layer. A printing layer was formed on this first release layer using UV ink to form an easily broken layer of about 7 μm. Furthermore, on the surface of the easily broken layer consisting of this printed layer, a silicone resin made by Toray Industries, Inc., which has a lower peeling force than the silicone resin forming the first peeling layer, is part-coated to a dry film thickness of 0.1 to 5μ. to form a second release layer. Thereon, a synthetic resin containing EVA resin as a main component is coated to a thickness of about 5 to 50 microns to form a coating layer. After that, apply Toyo Ink's acrylic adhesive (BPS-5127) to a dry film thickness of 5.
An adhesive layer was formed by coating to a thickness of ~50μ. At this time, the adhesive force (a) between the first release layer and the easily broken layer is about 50 g, the adhesive force (b) between the second release layer and the coating layer is about 30 g, and the adhesive force (a) between the first release layer and the easily broken layer is about 30 g. The adhesive force (d) is approximately 1000 g, and the force (c) required to peel the release sheet from the adhesive layer is approximately 20 g.
It was hot at g. The thus constituted pressure-sensitive adhesive material was cut into label pieces and affixed to a material to be affixed (paper box, etc.). At this time, the adhesive force (d) to the adhered material and the adhesive force (d') between the coating layer and the adhesive layer were about 1000 g. When an attempt was made to forcefully peel off the pasted label piece from the material to which it was pasted, the easily broken layer was torn at the border between the part where the second peeling layer was formed and the part where it was not formed, and the second peeling layer was removed. At the release layer site, the torn easily broken layer was peeled off from the adhered material together with the adhesive base material. In the embodiment described above, a pressure-sensitive adhesive was used as the adhesive 14a forming the adhesive layer 14, but it is also possible to form a sheet-like adhesive material 10 as shown in FIG. 10, for example. When doing so,
Pressure-sensitive adhesives tend to adhere inadvertently, so a rewetting adhesive that dissolves immediately when wet with water and exhibits strong adhesive strength may be applied. As this rewetting type adhesive, for example, a starch-based adhesive such as water-soluble polyethylene, Popal (PVA), or starch glue is used. Note that in the case of such a single-leaf type (sheet-like) adhesive material 10, unlike the adhesive material 10 shown in the above embodiment, the third release layer 12 is attached to the adhesive base material 24. The printed layer 26a is formed by appropriately printing lines such as "product name" and "price" on the surface of the adhesive base material 24, as shown in FIG. Good too. Furthermore, as shown in FIG. 10, the wide sheet-like adhesive material 10 is divided into a predetermined size by the width direction cuts 28a and the length direction cuts 28b consisting of perforations. 28a and 28b
Then, cut out the adhesive piece 1 of the appropriate size.
0a may be formed. Further, as the adhesive 14a forming the adhesive layer 14, a heat-sensitive type adhesive may be used, which has no tackiness on the surface at room temperature, but becomes activated and becomes adhesive when heated. As a heat-sensitive adhesive,
For example, an adhesive may be used that is activated when heated; for example, an adhesive that is mainly made of a hot-melt resin such as polyethylene, has tackiness, and is bonded when cooled. This adhesive is applied to the coating layer 1 of the laminate 30.
When applying the adhesive to the surface of 6, for example, it may be applied using a coating device that applies the adhesive while heating it to an appropriate temperature, and the laminate 30 on which the adhesive 14a is printed and applied blows out cold air. The adhesive 14a is then introduced into a dryer including a device to dry the adhesive 14a to form the adhesive layer 14.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an adhesive material manufactured by the manufacturing method according to the present invention. FIG. 2 is a sectional view showing the label shown in FIG. 1 in a destroyed state. FIGS. 3 to 5 are illustrative views showing an example of an apparatus for manufacturing a laminate used in an embodiment of the present invention. FIG. 6 is an illustrative view showing an example of an apparatus for manufacturing a laminate used in an embodiment of the present invention. FIG. 7 is an illustrative view showing an example of an apparatus for manufacturing labels. FIG. 8 is an illustrative view showing another method of forming an easily broken layer. FIG. 9 is a perspective view showing how to use the example illustrated in FIG. FIG. 10 is a perspective view of the embodiment illustrated in FIG. FIG. 11 is a perspective view of another embodiment. In the figure, 10 is an adhesive material, 12 is a third release layer, 14 is an adhesive layer, 16 is a coating layer, 18 is a second release layer, 20 is an easily broken layer, 22 is a first release layer,
24 is an adhesive base material, 26 is a printing layer, 28, 28a,
28b is a cut, 14a is an adhesive, 16a is a coating material, 18a is a release agent, 20a is an easily broken material, 22a
is a release agent, 24a is an adhesive material, 100 is a device, 1
02 is a holding roller, 104 is a release agent coating device, 1
06a, 106b are rollers, 108 is a storage tank, 11
0 is a dryer, 120 is a laminating device, 122 is a vacuum tank, 124 is an upper chamber, 126 is a winding shaft, 128
130 is a cooling drum, 132 is a lower chamber,
134 is an evaporation source, 136 is a vacuum exhaust system, 140
142 is a lamination device, 142 is a roll loading device, 144 is a release agent coating device, 150 is a lamination device, 152 is a roller, 154 is a roller, 156 is a cooler, 158
160 is a winding roller, 160 is a laminating device, 162 is a roll loading device, 166 is an adhesive coating device, 168
a, 168b are rollers, 170 is a storage tank, 172 is a dryer, 174 is a winding roller, 220 is a laminating device, 222a is a main roller, 222b is a roller, 224 is a storage tank, 226 is a dryer, 228 is a winding roller, A indicates the material to be adhered.

Claims (1)

[Claims] 1 The adhesive force between the first release layer and the easily broken layer is a, the adhesive force between the second release layer and the coating layer is b,
The force required to separate the adhesive layer from the third release layer when the adhesive layer is bonded to the third release layer is c.
A method for manufacturing a product that satisfies the following formula a>b>c, comprising: (a) forming an easily broken layer on the surface of the first release layer on one surface of the adhesive base material; b) forming a second release layer on a part of the surface of the easily destructible layer; (c) forming a coating layer on the other part of the surface of the easily destructible layer and the surface of the second release layer; (d) a step of forming an adhesive layer on the surface of the coating layer; (e) a step of forming an adhesive layer on the surface of the adhesive substrate opposite to the surface on which the first release layer is formed; Step 3 of forming a release layer. 2. The method for producing an easily breakable adhesive material according to claim 1, wherein step (c) includes a step of rolling up the adhesive base material into a roll. 3. The method for manufacturing a breakable adhesive material according to claim 1, wherein step (d) includes a step of rolling up the adhesive base material into a roll. 4. The step (a) includes a step of forming an easily broken layer on the surface of the first peeling layer on one surface of the adhesive base material made of a synthetic resin film. A method for manufacturing the easily destructible adhesive material according to any of Item 3. 5. Claim 4, wherein the step (a) includes a step of forming an easily broken layer on the surface of the first peeling layer on one surface of the adhesive base material made of a transparent synthetic resin film. Manufacturing method of the easily destructible adhesive material described. 6. The step (a) includes the step of forming an easily broken layer on the surface of the first release layer on one surface of the adhesive base material made of polyethylene terephthalate film. A method for manufacturing the easily destructible adhesive material according to item 5. 7. In step (a), a release agent is printed and coated on the surface of the adhesive base material to form a first release layer;
7. A method for producing an easily breakable adhesive material according to any one of claims 1 to 6, comprising the step of forming an easily breakable layer on the surface of the release layer. 8. The easily destructible adhesive material according to claim 7, wherein the step (a) includes a step of printing and applying a release agent containing silicone resin as a main component to form a first release layer. manufacturing method. 9. The easily breakable adhesive according to claim 7, wherein the step (a) includes a step of printing and applying a release agent containing a fluororesin as a main component to form a first release layer. The manufacturing method of the material. 10 The step (a) includes a step of laminating a vapor deposited layer on the surface of the first release layer on one surface of the adhesive base material to form an easily broken layer. A method for producing an easily destructible adhesive material according to any of Item 9. 11. The method for manufacturing a breakable adhesive material according to claim 10, wherein step (a) includes a step of forming a breakable layer by vapor-depositing a metal. 12. The method for producing a breakable adhesive material according to claim 11, wherein step (a) includes a step of vapor depositing aluminum to form a breakable layer. 13 The step (a) includes the step of depositing silver to form an easily broken layer.
A method for manufacturing the easily destructible adhesive material according to item 1. 14. The method for producing a breakable adhesive material according to any one of claims 1 to 9, wherein step (a) includes a step of laminating printed layers to form a breakable layer. 15. The method for producing an easily breakable adhesive material according to claim 14, wherein step (a) includes a step of laminating silver printing layers to form an easily breakable layer. 16. The step (b) includes a step of forming a second release layer by printing and applying a release agent on a part of the surface of the easily broken layer. A manufacturing method for the easily destructible adhesive material described in the above. 17. The easily destructible adhesive material according to claim 16, wherein step (b) includes a step of printing and applying a release agent containing silicone resin as a main component to form a second release layer. Manufacturing method. 18. The easily destructible adhesive material according to claim 16, wherein the step (b) includes a step of printing and applying a release agent containing a fluororesin as a main component to form a second release layer. manufacturing method. 19. The step (c) according to claims 1 to 18 includes a step of coating a synthetic resin on the second release layer side surface of the easily broken layer to form a coating layer. A method for manufacturing the easily destructible adhesive material according to any one of the above. 20. The method for producing an easily breakable adhesive material according to claim 19, wherein step (c) includes a step of forming a coating layer by coating a synthetic resin containing EVA resin as a main component. 21. The easily breakable adhesive according to any one of claims 1 to 20, wherein step (d) includes a step of printing and applying an adhesive on the surface of the coating layer to form an adhesive layer. Manufacturing method for adhesive materials. 22. The method for producing a breakable adhesive material according to claim 21, wherein step (d) includes a step of printing and applying a pressure-sensitive adhesive to form an adhesive layer. 23. The method for producing a breakable adhesive material according to claim 21, wherein step (d) includes a step of printing and applying a rewet adhesive to form an adhesive layer. 24. The method for producing a breakable adhesive material according to claim 21, wherein step (d) includes a step of printing and applying a heat-sensitive adhesive to form an adhesive layer.