JPS61223780A - Easy to destruct sticking material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to an easily breakable adhesive material in which the easily breakable layer beneath the surface layer is easily destroyed when the surface layer is peeled off by hand, and in particular, For example, the present invention relates to an easily destructible adhesive material suitable for use in price tags, stickers to prevent repositioning, etc. that are pasted on the openings of containers.

(Prior art) Conventionally, labels used as price tags to prevent repositioning are made by making appropriate perforations or cuts in the surface base material.
For example, if you try to remove it at a store and replace it with another price tag, it will separate and break at the perforations and cuts, and
There are known devices that allow you to tell at a glance that an attempt has been made to peel them off.

On the other hand, the adhesive paper attached to the opening of a container to indicate its unopened status may be used, depending on the material of the opening of the package and its surface treatment method. It can be picked up and easily peeled off on the spot, and can be re-attached to prevent people from knowing that foreign matter has been mixed into the package, so just look at the sticker from outside. So I don't know if the package has already been opened or not. Therefore, there is a risk that the contents of the package may be tampered with. For example, poisonous substances may be mixed into candy packages.

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. 59-1077.

This adhesive label is attached by peeling off the release sheet and pressing the exposed adhesive layer against the opening (not shown) of the package. When the adhesive label affixed to the opening is peeled off, only the portion of the deposited film that was not directly deposited on the film substrate by the release agent coating remains attached to the opening. . Furthermore, if the opening is opened, the remaining vapor deposited layer stuck there will be cut or torn, thereby indicating whether the opening has been opened.

(Problem to be solved by the invention) However, with such adhesive labels, when the film is peeled off, a part of the vapor deposited film is difficult to remain on the adhesive coated surface, and it is difficult to remove the deposited film while remaining adhered to the film surface. Once peeled off, it is not easy to form characters or the like with the remaining vapor deposited film. Furthermore, when the film base material is peeled off, a portion 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 also had problems in terms of hygiene.

Therefore, the main object of the present invention is to provide an adhesive material that can be recognized as having been peeled off after being applied, and that no adhesive appears on the peeled surface and does not become sticky.

(Means for Solving the Problems) This invention provides an adhesive base material, an easily destructible layer laminated on one main surface of the adhesive base material, and a separation between the adhesive base material and the easily destructible layer. a first peeling layer that facilitates the destructuring, a second peeling layer formed on a part of the main surface of the easily destructible layer, and a second peeling layer formed on the second peeling layer side main surface of the easily destructible layer. and an adhesive layer formed on the main surface of the coating layer, where the adhesive force between the first release layer and the easily broken layer is a, and the adhesive force between the second release layer and the coating layer is a. It is an easily breakable adhesive material that satisfies the following formula, where b is:

(Function) The adhesive force between the first release layer and the easily broken layer is formed to be greater than the adhesive force between the second release layer and the covering layer, and the second release layer is formed so that the easily broken layer Since it is formed with a part removed from the main surface of the material, the adhesive strength of each part of the easily destructible adhesive applied to the material to be adhered is the same as that of the part where the second release layer is formed. When the adhesive base material on the surface is peeled off, 1. The easily destructible layer is torn at the boundary between the part where the second peeling layer is formed and the part where it is missing, and the easily destructible layer and the coating layer in the part where the second peeling layer is missing are exposed to the surface of the adhered material. The remaining parts are peeled off from the coating layer.

(Effects of the Invention) According to the present invention, the adhesive force between the first release layer and the easily broken layer is greater than the adhesive force between the second release layer and the coating layer,
Moreover, since the second release layer is formed on the main surface of the easily broken layer with a portion removed, the adhesive force between the covering layer and the easily broken layer is determined by the formation of the second release layer. The adhesion strength is different between the removed portion and the removed portion, and when the adhesive base material is peeled off, only the easily broken layer in the portion where the second release layer is formed is peeled off from the covering layer. Therefore, 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 adhesive material has been peeled off, and it can also be easily determined whether a poisonous substance or the like has been mixed into the package.

Furthermore, 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, as in the case of conventional methods. The adhesive force of the exposed adhesive layer makes it impossible to reattach the surface material.

The above-mentioned object 2 and 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 that is an example of the present invention. The adhesive material 10 of this example is used as a sticker, etc., and is wound into a roll shape such that the adhesive material 10B is rolled over the adhesive material 10A as shown in FIG. There is.

This adhesive material 10 has an adhesive layer 14. Covering layer 16° Second release layer 18. Easily destroyed layer 20. The first peeling layer 22 and the adhesive base material 24 are sequentially laminated.

On the surface of the adhesive base material 24, the adhesive material 1 to be rolled up is placed.
A third release layer 12 is formed on the surface to be bonded to the adhesive layer 14 of 0B. Furthermore, the adhesive base material 24
A printing Jii 26 is formed on the surface.

The following structures are formed in the same manner one after another.

The adhesive base material 24 is formed to prevent the easily destructible layer 20 from being cut or torn, and is temporarily attached to the easily destructible layer 20 via the first peeling layer 22. .

Examples of the adhesive base material 24 include materials that are relatively stiff and hard to shrink due to heat, such as polyethylene terephthalate film, polyester, and nylon film, or paper and synthetic paper, which will be described later. Therefore, in order to be able to clearly see the traces of peeling from the surface side of the adhesive base material 24 when the adhesive material 10 is peeled off, it is better to select a transparent or semi-transparent material. good. If you do that, the easily broken layer 20
A part of the adhesive remains on the adhesive material A, and a part is peeled off from the adhesive material A and stuck to the adhesive base material 24.
Easy to understand and convenient.

The first release layer 22 temporarily attaches the adhesive base material 24 and the easily broken layer 20 in a state where re-adhesion is impossible, and facilitates peeling between the adhesive base material 24 and the easily broken layer 20. For example, it consists of a release agent layer coated with a release agent such as silicone resin, fluororesin, paraffin, wax, etc.
It is formed between the adhesive base material 24 and the easily broken layer 20.

The easily breakable layer 20 is a layer formed by vacuum-depositing an evaporation substance such as aluminum, silver, or zinc, and is a highly breakable layer that can be easily torn by hand.

Instead of the vapor deposited film formed by the vacuum vapor deposition method described above, this easily destructible layer 20 may be formed, for example, by a printed layer formed by solid chain side printing, or by a printed film using UV type ink or other layers. It can also be formed by coating with a resin. However, when this adhesive material 10 is bent and attached to a bent part, the easily broken N20
It is preferable to use a material that is relatively flexible so that the adhesive base material 24 does not peel off in an attempt to restore its original state against the adhesive force of the adhesive.

Other examples of the easily breakable layer 20 include a layer that can be cut or torn by applying a relatively weak force.
Examples include a resin layer formed by coating a synthetic resin such as a copolymer resin of vinyl chloride and acrylic in which metal powder is mixed into a synthetic resin.

The second release layer 18 is formed by coating a part of the surface of the easily broken layer 20 with a release agent such as silicone resin, fluororesin, or wax by printing a pattern. for example,"
By pattern printing and coating lines such as letters and pictures such as "opened", the adhesive base material 2 is coated as described below.
When the adhesive 10 is peeled off and the easily broken layer 20 is destroyed, lines such as the above-mentioned characters ``opened'' appear, thereby forming an adhesive material 10 that is more suitable for the purpose of use. I can do it.

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, for example, urethane resin, EVA resin, P
It is formed by coating a resin such as VA, vinyl acetate, acrylic, nitrocellulose, polyamide, acrylic, etc. on the surface of the easily broken FF 120 on which the second release layer 18 is formed.

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, for example, an adhesive layer coated with a pressure-sensitive adhesive.
It is formed on one main 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 is d, and the adhesion N of the adhesive material 10B among the adjacent adhesive materials 10A and IOB is
14 and the third release layer 12 of the adhesive material 10A bonded thereto.
Let C be the force required to further peel off the easily broken layer 20.
When the force required to destroy is set as e, the following formula % formula % is satisfied.

To use this adhesive material 10, first pull out the roll-shaped adhesive material 10B, peel it off from the adjacent adhesive material 10A and pull it out to a predetermined length. It is cut into strips 10a and attached using the adhesive layer 14, for example, as a price tag or attached to the opening of a puff cage for sweets, as shown in FIGS. 9(a), (b), and (c).

In this way, in order to open the opening of the package to which the adhesive 10 is attached, the attached adhesive 10 must be peeled off and the sealed portion must be opened.

In this case, the easily broken layer 20 is temporarily attached to the adhesive base material 24 via the first peeling layer 22, and the easily broken layer 20 is
16 and where the second release layer 18 is formed, the bond is weaker than the portion directly bonded to the covering layer 16. Therefore, as shown in FIG. 2, when an attempt is made to peel off the adhesive base material 24, the easily broken layer 20 of the second peelable Fii 18 portion and the easily broken layer 1520 of the portion directly adhered to the covering layer 16 are removed. The easily broken layer 20 is torn at the boundary of the second layer.

The coating layer 16 is peeled off from the main surface of the release layer 18, and a part of the easily broken layer 20 (the part on which the second release layer 18 is formed) remains adhered to the adhesive base material 24, It will be peeled off from the attached material A.

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 N20 is broken at the boundary between the part where the second release layer 18 is formed and the part where it is not formed, and the adhesive base material 24 is removed again. 24 cannot be reattached to the surface of the coating layer 16, and cannot be restored to its original state, so it is obvious that the package has been opened.

In this specification, sheets, films, and their equivalents are collectively referred to as "sheets" or "films," indicating the optimal one in each case. Furthermore, when we say "sheet," we do not only refer to single-wafer type sheets, but of course also include roll-up type (web) types.

Hereinafter, in order to clarify a part of the embodiments of the present invention, further explanation will be given based on an example of the method for manufacturing the adhesive material according to the present invention.

FIGS. 3 to 5 are illustrative views showing an example of an apparatus for manufacturing a laminate 30 used in an embodiment of the present invention.

This laminate 30 is made by laminating the first release layer 22, the easily broken layer 20, the second release layer 18, and the covering layer 16 in that order on the main surface of the adhesive base material 24, and A third release layer 12 is laminated on the opposite main surface of the material 24.

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. , and a storage tank 108, and the release agent 22a is applied while rotating the mouth rollers 106a and 106b. Note that as the release agent coating device 104, 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 109 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.

Adhesive material 24 with first peeling layer 22 formed in this way
a is guided to the winding device 112.

Next, in order to laminate the third release layer 12 again, the device is loaded into a device similar to the above-described release agent application device 104, and is applied in the same manner as described above. The third release layer 12 is formed by printing and applying a release agent. The release agent for forming this third release layer 12 is silicone resin.

A material whose main component is a fluororesin or the like 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.

This 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 roughly divided from the functional point of view: a vacuum tank 122, a winding shaft 126 in the upper chamber 124,
It includes an internal device including a delivery shaft 128 and a cooling drum 130, an evaporation source 134 and a heating device in a lower chamber 132, a vacuum exhaust system 136, and other various needle devices.

By this semi-continuous vacuum evaporation device, the adhesive material 24a fed out from the delivery shaft 128 passes through the slit via the cooling drum 130, is guided to the lower chamber 132, and is formed on the surface of the adhesive material 24a. On the main surface of the first release layer 22,
Aluminum, silver.

Zinc and other metals and metal compounds are used as evaporation materials for deposition,
The easily broken layer 20 is formed by vacuum deposition.

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 this laminating device include, for example, a printing device such as an offset printing machine and a coating device as shown in FIG.

The laminating apparatus 220 shown in FIG. 8 prints an easily destructible material 20a forming an easily destructible layer 20 on the surface of the first peeling layer 22 formed on the surface of the adhesive base material 24.

A main roller 222a,
It includes 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, and the surface of the first peeling layer 22 of the adhesive material 24a sandwiched between the rollers 222b. To,
The easily destructible material 20a is printed and applied by the roller 222b.

Examples of the easily destructible material 20a include inks such as UV type ink and resins such as synthetic resins containing metal powder, as described above.

Then, the adhesive material 24 is printed and coated with the easily destructible material 20a.
a is led to a dryer 226 that includes a heater, for example.

In the dryer 226, the destructible material 20a printed and coated on the adhesive material 24a is dried to form an easily destructible layer 20, which is then wound around a take-up roller 228.

The rolled body of the adhesive base material 24 on which the easily broken layer 20 is 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 the adhesive base material 24. The adhesive base material 24 pulled out from the roll body loading device 142 that loads this roll body
is led to the next release agent applicator 144. The release agent coating device 144 is for printing and coating a release agent 18a such as silicone resin, fluorine resin, paraffin, wax, etc. on one surface of the easily broken layer 20, and 2
The release agent 18a is applied while rotating the rollers 146a and 146b. This release agent 18a is then led to a dryer 149 that includes a heater and is dried.

Note that as the release agent coating device 144, 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.

The release agent 18a forming the second release layer 18 is partially printed and applied on the surface of the easily broken layer 20, and is formed by pattern printing, for example, lines such as "opened". be done. The adhesive base material 24 coated with the release agent 18a is coated with a coating material 16a that forms the next coating Fii16.
It is sent to a laminating device 150 that laminates.

This coating material laminating device 150 includes a roller 152 that applies a coating material 16a such as EVA resin.

In this laminating device 150, an easily broken layer 20 coated with a release agent 18a forming the second release layer 18 is used.
A roller 154 is used to laminate the coating material 16a on the surface of the
The molten resin is then coated in a molten state and guided to a cooler 156 provided next.

The cooler 156 is for cooling the covering material 16a. In the cooling ta 156, the coating material 16a is cooled and solidified to form the coating layer 16, and the first release layer 22. Easily destroyed layer 20. Second release layer 1
8 and the covering layer 16 are sequentially laminated to form a laminate 30. 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 shows a laminated bag f in which the adhesive layer 14 is laminated on the laminated body 30.
It is an illustrative view showing l160.

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 led to an adhesive coating device 166, which is a coating device for the adhesive 14, with its coated surface 1i16 being the lower 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 applies the coating layer 16 of the laminate 30 to the coating layer 16 of the laminate 30.
It is for applying adhesive 14a to the surface of the surface,
It includes a main roller 168a and a roller 168b provided opposite to the main roller 168a. The lower part of the main roller 168a is immersed in the adhesive 14a stored in the storage tank 170.
The main roller 168a applies adhesive 1 to the surface of the coating layer 16 of the laminate 30 sandwiched between the roller 8a and the roller 168b.
4a is printed and applied.

The laminate 30 on which the adhesive 14a is printed and applied is
For example, it is led to a dryer 172 that includes a heater. In the dryer 172, the adhesive 14a printed and applied to the laminate 30 is
is dried to form the adhesive layer 14, and the laminate of the adhesive layer 14 and the laminate 30 is wound up on the take-up reroller 174.

In order to make a label using the adhesive material manufactured in this way, it is sufficient to load it into an apparatus for manufacturing a label, including a printing apparatus for this laminate.

FIG. 7 is an illustrative view showing an example of an apparatus for manufacturing labels.

The label manufacturing apparatus 180 includes a holding device 182 that loads a roll of a laminate 30 in which the release sheet 2 is laminated on the surface of the adhesive layer 14. The laminate consisting of the release sheet 12 and the laminate 30 pulled out from the holding device 182 is guided to the printing device 184. This printing device 18
4 is a known printing machine such as an offset printing machine.

Then, 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 print N26 has been formed in this manner is led 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. First peeling N22° easily destructible layer 20. Cuts of appropriate shapes are made in the covering layer 16 and the adhesive layer 14. Note that the printing layer 26 is
Before forming the third release layer 12, it may be formed on the surface of the adhesive base material 24 in advance.

Note that the die cutter 186 may use a roll with cutting blades, a so-called die roll.

The scored laminate is rolled by rollers 188a and 18
At step 8b, the label 10 (necessary part) is separated into an unnecessary part and a label 10 (necessary part), the unnecessary part is wound up into a roll by a scrap removal roller 190, and the label 10 (necessary part) is temporarily attached to a release sheet 12. In this state, it is wound up into a roll by a winding roller 192. Note that a score forming machine may be provided in place of the die cutter 186 and the take-up reroller 192. The scoring machine includes a cutting blade. This cutting blade is attached to the adhesive base material 24. First release layer 22. Easily destroyed layer 20. This is for making cuts in 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, applying silicone resin to one main surface to form the first peeling layer, and then forming the easily broken layer. Aluminum was vacuum-deposited on the first release layer to form an easily broken layer of about 7 μm.

Furthermore, on the surface of the easily breakable layer formed by vacuum-depositing aluminum, a silicone resin manufactured by Toshi Co., Ltd., 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 peeling layer is formed by part footing to a thickness of 5μ.

Thereon, a synthetic resin whose main component is EVA resin listed in Table 1 below is coated to a thickness of about 5 to 50 microns to form a coating layer. Thereafter, an acrylic adhesive (BP S-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 between the first release layer and the easily broken layer (
a) is about 50 g, the adhesive force between the second release layer and the coating layer (b) is about 30 g, and the adhesive force of the adhesive layer (d)
was approximately 1.000 g, and the force (c) required to peel the release sheet from the adhesive layer was approximately 20 g. Pasted on adhesive material (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 1,000 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.

(The following is a blank space) Section L: "L (2) Using a polyester film with a thickness of about 50μ as the adhesive base material, apply silicone resin to one main surface to form a first release layer, and then In order to form an easily breakable layer, a printed layer was formed using UV ink on this first peeling layer to form an easily breakable layer with a thickness of about 7 μm.

Furthermore, the first
The silicone resin manufactured by Toshi Co., Ltd., which has a lower peeling force than the silicone resin that forms the peeling layer, is used for dry film thickness of 0.1~
A second release layer is formed by part-coating to a thickness of 5μ.

On top of that, a synthetic resin whose main component is EVA resin is added to the
A coating layer is formed by coating to a thickness of about 50μ. After that, apply Toyo Ink's acrylic adhesive (BPS-5).
127) 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 about 50 g, and the adhesive force (b) between the second release layer and the coating layer is about 30 g,
The adhesive force (d) of the adhesive layer was about 1,000 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 1,000 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. In such cases, pressure-sensitive adhesives tend to adhere inadvertently, so a rewetting adhesive that dissolves immediately when wetted 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, PVA (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. On the surface of the adhesive base material 24, as shown in FIG. It's okay.

In addition, as shown in FIG. 10, the cuts are perforated widthwise cuts 28a and lengthwise cuts 28b to divide the wide sheet-like adhesive material 1o into a predetermined size.
Adhesive pieces 10a of an appropriate size may be formed at the cuts 28a and 28b by cutting.

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. Heat-sensitive adhesives include adhesives that activate when heated, such as adhesives that are mainly made of a heat-melting resin such as polyethylene and that bond when cooled. Good too. When applying such an adhesive to the surface of the coating layer 16 of the laminate 30, it may be applied using, for example, a coating device that applies the adhesive while heating it to an appropriate temperature, and the adhesive 14a may be applied by printing or coating. The resulting laminate 30 is led to a dryer including a device for blowing cold air, and the adhesive 14a is dried to form the adhesive layer 14.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an adhesive material according to an embodiment of the present invention. FIG. 2 is a sectional view showing the destroyed state of the embodiment. 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 diagram 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 embodiment. 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 the adhesive material, 12 is the third release layer, and 14
1 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 the printing layer, 28.28a. 28b is a cut, 14a is an adhesive, 16a is a covering material, 18
a is a release agent, 20a is an easily broken material, 22a is a release agent, 24
a is the adhesive material, 100 is the device, 102 is the holding roller, 1
04 is a release agent coating device, 106a and 106b are rollers,
108 is a storage tank, 110 is a dryer, 120 is a stacking device, 1
22 is a vacuum tank, 124 is an upper chamber, 126 is a winding shaft,
128 is a delivery shaft, 130 is a cooling drum, 132 is a lower chamber,
134 is an evaporation source, 136 is a vacuum exhaust system, 140 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 is a A take-up reroller, 160 is a laminating device, 162 is a roll loading device, 166 is an adhesive coating device, 168a and 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 take-up reroller, and A is a material to be adhered. Patent applicant Omatsu Chemical Industry Co., Ltd. Agent Patent attorney Oka 1) Kei Zen (and 1 other person) Figure 1 10 170 14a Figure 7

Claims (1)

[Scope of Claims] 1. An adhesive base material, an easily destructible layer laminated on one main surface of the adhesive base material, and a first layer that facilitates peeling between the adhesive base material and the easily destructible layer. a release layer; a second release layer formed on a part of the main surface of the easily broken layer; a coating layer formed on the second release layer side main surface of the easily broken layer; and the coating. and an adhesive layer formed on the main surface of the layer, where a is the adhesive force between the first release layer and the easily broken layer, and b is the adhesive force between the second release layer and the coating layer, as shown below. An easily destructible adhesive material that satisfies the formula a>b. 2. The easily destructible adhesive material according to claim 1, wherein the adhesive base material includes one rolled up into a roll. 3. The adhesive base material includes a third release layer formed on the surface opposite to the surface on which the temporary adhesive layer is formed, and when rolled into a roll, the bonded adhesive base material The easily destructible adhesive material according to claim 2, which satisfies the following formula a>b>c, where c is the force required to separate the third release layer from the adhesive layer. 4. The easily destructible adhesive material according to claim 1, wherein the adhesive base material includes a sheet-like material. 5. The easily destructible adhesive material according to any one of claims 1 to 4, wherein the adhesive base material includes a synthetic resin film. 6. The adhesive base material includes a transparent synthetic resin film.
The easily destructible adhesive material according to claim 5. 7. The easily destructible adhesive material according to claim 5 or 6, wherein the adhesive base material includes a polyethylene terephthalate film. 8. The easily destructible adhesive material according to any one of claims 1 to 4, wherein the adhesive base material includes paper. 9. Claims 1 to 8, wherein the first release layer includes a release agent layer coated with silicone resin.
The easily destructible adhesive material described in any of the above. 10 Claims 1 to 4, wherein the first release layer includes a release agent layer coated with a fluororesin.
The easily destructible adhesive material described in any of the above. 11. The easily broken adhesive material according to any one of claims 1 to 10, wherein the easily broken layer includes a vapor deposited layer. 12. The easily broken adhesive material according to claim 11, wherein the easily broken layer includes a metal vapor deposited layer. 13. The easily broken adhesive material according to claim 12, wherein the easily broken layer includes a vapor deposited layer formed by vapor depositing aluminum. 14. The easily broken adhesive material according to claim 12, wherein the easily broken layer includes a vapor deposited layer formed by vapor depositing silver. 15. The easily broken adhesive material according to any one of claims 1 to 10, wherein the easily broken layer includes a printed layer. 16. The easily broken adhesive material according to claim 15, wherein the easily broken layer includes a silver printing layer. 17. The easily destructible adhesive material according to any one of claims 1 to 15, wherein the second release layer includes a release agent layer coated with silicone resin. 18. The easily destructible adhesive material according to any one of claims 1 to 16, wherein the second release layer includes a release agent layer coated with a fluororesin. 19. The easily destructible adhesive material according to any one of claims 1 to 18, wherein the coating layer includes a resin layer coated with a synthetic resin. 20. The easily destructible adhesive material according to claim 19, wherein the coating layer includes a resin layer coated with a synthetic resin containing EVA resin as a main component. 21 The adhesive layer includes an adhesive layer made of adhesive,
The easily destructible adhesive material according to any one of claims 1 to 20. 22. The easily destructible adhesive material according to claim 21, wherein the adhesive layer includes an adhesive layer coated with a pressure-sensitive adhesive. 23. The easily destructible adhesive material according to claim 21, wherein the adhesive layer includes an adhesive layer formed by applying a rewet adhesive. 24. The easily destructible adhesive material according to claim 21, wherein the adhesive layer includes an adhesive layer coated with a heat-sensitive adhesive. 25. The easily destructible adhesive material according to claim 24, wherein the adhesive layer includes an adhesive layer mainly composed of a hot-melt resin. 26. The easily destructible adhesive material according to any one of claims 1 to 25, wherein the adhesive base material includes a printed layer formed on a main surface thereof.