JPS61226780A - Making of 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 a method for manufacturing an easily breakable adhesive material suitable for use in price tags, labels to prevent repositioning attached to the opening of containers, and the like.

(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 it can be re-attached to prevent foreign objects from getting inside the package, so you can simply 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, when the opening is opened, the remaining vapor deposited film stuck to the opening is cut or torn, and this indicates whether the opening has been opened.

(Problems to be Solved by the Invention) However, in such adhesive labels, metal is vapor-deposited on the film base material and the release agent coating layer, so the film as the material to be vapor-deposited is limited to polyester, etc. Furthermore, in order to complete the vapor deposition, it is necessary to satisfy various other conditions, which has the disadvantage of increasing costs.

In addition, 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 peeled off while adhering to the film surface, and the remaining vapor deposited film cannot be used to form characters, etc. It can't be done easily. 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 a method for producing an adhesive material that can be recognized as having been peeled off after pasting, does not become sticky due to adhesive buildup on the peeled surface, and does not require a vapor deposition process. The goal is to provide the following.

(Means for solving the problem) The present invention improves the adhesive strength of the adhesive layer in the adhesive strength decreasing layer portion by a
, the force required to destroy the easily broken layer is b, the force required to peel off the easily broken layer from the adhesive base material at the temporary adhesive layer is C, and the force required to break the easily broken layer is C. Adhesive force d
A method for manufacturing a product that satisfies the following formula % formula % when: (a) temporarily adhering the adhesive base material and the easily broken layer with a temporary adhesive layer; (b) one of the easily broken layers (C) forming an adhesive strength reducing layer on a part of one major surface of the adhesive layer to reduce the adhesive strength of the adhesive; This is a manufacturing method for a destructible adhesive.

(Function) An adhesive force reducing layer that reduces the adhesive force of the adhesive layer is partially formed on one main surface of the easily broken layer, and is divided into sections, so that it does not adhere to the adhered material. The adhesive strength of the easily broken adhesive material differs between the adhesive layer and the reduced adhesion layer, and when the adhesive base material is peeled off, the easily broken layer is torn and the reduced adhesion layer is damaged. Only the easily broken layer is peeled off from the adhered material.

(Margin below) (Effects of the invention) According to this invention, since the adhesive base material and the easily broken layer are laminated with a temporary adhesive layer such as wax, it can be produced without vapor deposition as in conventional methods. Various synthetic resins and films can be used as the material for the adhesive base material, leading to cost reduction. Thereon, an adhesive layer formed on one main surface of the easily broken layer and an adhesive force reducing layer laminated on one main surface of this adhesive layer that reduces the adhesive force of the adhesive are separated, Since it is formed so that it can be adhered with different adhesive strengths, when it is attached to a material to be adhered, each part will be adhered with different adhesive forces. When the adhesive base material is peeled off,
Only the easily broken layer in the adhesive strength decreasing layer portion is peeled off from the adhered material. Therefore, since the easily breakable layer is torn and separated from other parts and does not return to its original state, it is possible to know that the easily breakable layer has been separated, and it is also easy to determine whether foreign matter has entered the package. can be determined.

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, etc., and as shown in FIG.
The adhesive material 10B is wound into a roll shape, such that the adhesive material 10B is rolled on top of 0A.

This adhesive material 10 has an adhesive layer 14. Easily destroyed layer 1
6. Temporary layer 18. Adhesive base materials 20 are sequentially laminated, and a part of the surface of the adhesive layer 14 is coated with the adhesive layer 1.
An adhesive force reducing layer 22 that reduces the adhesive force of 4 is laminated,
A second release layer 24 is formed on the surface of the adhesive base material 20 of the adhesive material 10A, which is bonded to the adhesive layer 14 of the adhesive material 10B wound thereon. Also,
Furthermore, a printed layer 26 is formed on the surface of the adhesive base material 20. The following structures are sequentially formed in the same manner.

The adhesive layer 14 is for providing adhesive force to the adhesive material 10, is made of an adhesive such as a pressure-sensitive adhesive, and is formed on one main surface of the easily broken layer 16.

The easily broken layer 16 is made of aluminum foil or a synthetic resin film typified by a brittle film made by mixing an extender pigment (for example, titanium white, calcium carbonate) with a copolymer resin of vinyl chloride and acrylic. ,
Examples include easily breakable sheets that can be easily torn by hand.

Among them, when the adhesive piece 10a obtained by cutting off the adhesive material 10 is bent and pasted on the bent part, the adhesive base material 20 is pulled back against the adhesive force of the temporary adhesive layer 18. It is better to use a relatively flexible material that will not peel off when you try to restore it to its original state.

The adhesive base material 20 is formed to prevent the easily destructible layer 16 from being cut or torn, and is temporarily attached to the easily destructible layer 16 via the temporary adhesion layer 18 .

Examples of the adhesive base material 20 include polyester or nylon film, which is relatively stiff and does not shrink easily due to heat, or paper or synthetic paper. When the material is removed,
In order to be able to clearly see the evidence of peeling off from the surface side of the adhesive base material 20, it is better to select a transparent or semi-transparent material. It is convenient to be able to easily see that the adhesive remains on the material to be adhered, and that part of it has been peeled off from the material to be adhered and stuck to the adhesive base material 20.

The temporary adhesion layer 18 is for temporarily adhering the adhesion base material 20 and the easily broken layer 16 in a state where re-adhesion is impossible.
It is made of a wax agent such as paraffin or Wanx, and is formed between the adhesive base material 20 and the easily broken layer 16. Note that the adhesive force between the adhesive base material 20 and the easily broken layer 16 due to this temporary attachment 751B is weaker than the adhesive force of the adhesive layer 14.

The adhesive strength reduction Jii 22 is formed by coating a pattern of a face on the surface of the adhesive layer 14, and
This eliminates the activity of pressure-sensitive adhesives such as pressure-sensitive adhesives forming No. 4.

That is, the adhesive force of the adhesive layer 14 is lower than that of the adhesive force decreasing layer 22.
There is a significant difference in adhesive strength between the part where the adhesive layer 14 is formed and the part where it is not. Even when the base material 20 is peeled off by hand,
In areas where the adhesive layer 14 is directly in contact with the material to be adhered, it is adhered to such an extent that it cannot be easily peeled off, but in areas where the adhesive strength reducing layer 22 is formed, it is relatively separated from the material to be adhered. It is designed so that it can be easily peeled off.

A suitable example of this adhesive strength reducing layer 22 is to form it by pattern coating the above-mentioned face etc., but there are other methods such as synthetic resin, UV ink, oxidative polymerization type ink, etc. that eliminate the activity of the plugging agent. It can also be formed by pattern printing or coating with ink such as, vegetable or mineral powder such as wheat flour, starch, talc, etc.

This adhesive strength reducing layer 22 is pattern-printed with lines such as letters or pictures such as "opened".

By coating, as will be described later, the adhesive base material 20
If the above-mentioned pattern such as the characters "opened" is made to appear when the easily broken layer 16 is destroyed by peeling off the adhesive material 10, the purpose of use of the adhesive material 10 will be further met.

In addition, in this adhesive material 10, the adhesive force of the adhesive layer 14 at the adhesive strength decreasing layer 22 portion is set as a, the force required to break the easily broken layer 16 is set as b, and the easily broken layer 16 is replaced by the temporary adhesive layer 18. The force required to peel it off from the adhesive base material 20 at is C, the adhesive force of the adhesive layer 14 other than the adhesive force decreasing layer 22 portion is d,
When the force required to peel off the adhesive layer 14 of the adhesive material 10B from the second peeling 7524 of the adhesive material 10A bonded thereto between the adjacent adhesive materials 10A and IOB is represented by the following formula % formula: %).

To use this adhesive material 10, first pull out the roll-shaped adhesive material 10, peel it off from the adjacent adhesive material 10A and pull it out to a predetermined length. It is cut into strips 10a and pasted on the adhesive layer 14 as a price tag or on the opening of a candy package, for example, as shown in FIG. 8(a).

Furthermore, as shown in FIGS. 8(b) and (C), when completely sealing the opening of the lid of a can or bottle, there is no need for cuts 28 such as perforations, and it is possible to use a series of cuts 28. good.

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

In this case, the adhesive base material 20 is temporarily attached to the easily broken layer 16 with the temporary adhesive layer 18, the easily broken layer 16 is strongly (adhered) to the adhered material A with the adhesive N14, and the adhesive strength reducing layer 22 is In the area where the adhesive layer 14 is formed, the bond is weaker than in the area where the adhesive layer 14 is bonded as is.Therefore, as shown in FIG. , easily breakable layer 16 in the adhesive strength decreasing layer 22 portion
, the adhesive force decreases and the adhesive layer 14 is not formed.
At the boundary with the easily broken layer 16 in the exposed portion, the easily broken layer 16 in the adhesive strength decreasing layer 22 part is peeled off from the adhered material A, and the easily broken layer 16 is placed on top of the easily broken layer 16. The easy-to-destruct layer 16 portion is torn and peeled off from the adhered material A.

Then, in the easily broken layer 16, the portion where the adhesive strength reducing layer 22 is not formed remains stuck to the material to be stuck. Therefore, once the adhesive base material 20 is peeled off, the easily destructible layer 16 is torn at the boundary between the part where the adhesive strength reducing layer 22 is formed and the part where it is not formed.
Since the adhesive base material 20 cannot be attached to the surface of the temporary adhesive layer 18 again and does not return to its original state, the unsealed state can be clearly seen.

In this specification, sheets, films, and their equivalents are collectively referred to as "sheets" or "films," indicating the most suitable one for each case. Furthermore, the term "sheet" does not refer only to single-fed 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.

FIGS. 3 and 4 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 has a temporary adhesive layer 18 and an easily broken layer 16 laminated in that order on an adhesive base material 20, and a second release layer 24 is formed on the opposite main surface of the adhesive base material 20. It is what was done.

The device 100 includes a holding roller 102 for holding the adhesive material 20a forming the strip-shaped adhesive base material 20 in a roll shape.
including. Adhesive material 20a held by holding roller 102
, one end of which is unraveled, and the release agent applicator 104
guided by.

The release agent applicator 104 applies a release agent 2 such as silicone resin or fluororesin to one surface of the adhesive material 20a.
4a and includes two rollers 106a and 106b. The lower part of the roller 106a is immersed in the release agent 24a stored in the storage tank 10B. Therefore, by rotating the rollers 106a and 106b, the release agent 24a is printed and applied to the surface of the adhesive material 20a guided between them. Note that as the release agent coating device 104, a printing coating device such as a gravure roll coater, a reverse roll coater, an air knife coater, etc. may be used, and an offset printing machine,
A known printing machine such as a screen printing machine may be used.

Then, an adhesive material 20a is printed and coated with a release agent 24a.
is led to a dryer 110 that includes a heater, for example. In the dryer 110, the release agent 24a printed and applied to the adhesive material 20a is dried and formed as a second release 824. The adhesive material 20a on which the second release layer 2'4 has been formed in this manner is guided to the winding device 112.

Then, the adhesive material 20a, on which the second release layer 24 is formed and which is rolled up into a roll, is transferred to the apparatus 1 shown in FIG.
20, is loaded into the holding device 122.

The adhesive material 20a held by the holding device 122 is unwound at one end and guided to the temporary adhesive material application device 124.

The temporary adhesive material applicator 124 applies a temporary adhesive material 18 such as paraffin or wax to one surface of the adhesive material 20a.
It is for printing and applying a, and has two rollers 12.
6a and 126b, including reservoir 128. Temporary material 18a
The adhesive material 20a coated with is sent to a laminating device 130 which overlays and laminates the next easily breakable material 16a. This stacking device 130 includes a device 132 that loads a rolled body in which easily destructible material 16a such as aluminum foil is wound.

In this laminating device 130, in order to superimpose the easily breakable material 16a on the surface of the adhesive material 20a coated with the temporary adhesive material 18a, the material is overlapped while being pressed by rollers 134a and 134b, and then a cooling machine is provided. 136
guided by. That is, one end of the breakable material 16a held in a roll is unwound and guided between the roller 134a and the corresponding roller 134b.

At this time, these rollers 134a and 134
An adhesive material 20a on which a temporary adhesive material 18a is applied is guided between the rollers 1 and b.
Between 34a and 134b, the adhesive material 20a and the breakable material 16a are overlapped with the temporary adhesive material 18a in between.

In this way, the stacked body 30 in which the easily destructible materials 16a are stacked is guided to the cooler 136. The cooler 136 is
This is for cooling the temporary adhesive material 18a of the laminate 30.

In the cooler 136, the temporary adhesive material 18a of the laminate 30 is cooled and solidified to form the temporary adhesive layer 18.

Next, the laminate 30 is guided to a score forming device 138 that forms cuts 28 such as cut-out perforations. The cut 28 is the adhesive material 1 formed to divide a large number of identical arrays.
This is to facilitate dividing 0 into one sheet at a time. This cut forming device 138 is capable of forming such cuts 28
It has a cutting edge with a shape corresponding to the shape of. As the score forming device 138, a device including a cutting blade roller or the like may be used. Of course, in the case of an adhesive material in which no cuts 28 are formed, the cuts 28 do not need to be formed by the cut forming device 138.

The stacked body of this laminate 30 is assembled into a stacking device 14 shown in FIG.
Sent to 0.

The stacking device 140 shown in FIG. 5 includes a device 142 for loading rolls of the stack 30, and the stack 30 pulled out from the roll salt making device 142 loading the rolls is as follows:
It is sent to the next adhesive applicator 144.

As the adhesive 14a forming the adhesive layer 14, an adhesive such as a true melt adhesive is used.

When applying such an adhesive to the surface of the easily broken layer 16 of the laminate 30, it is applied using a coating device 144 that applies the adhesive while heating it to an appropriate temperature, as shown in FIG. 5, for example. The laminate 30 to which the adhesive 14a has been applied by printing can be dried in a dryer 146 including a device for blowing out cold air.
The adhesive 14a is dried to form an adhesive M14.

In this way, the laminate 30 on which the adhesive layer 14 is formed
is then directed to a print coating device 148 where the adhesion reducing layer 22 is formed. In this printing coating device 148, the adhesive layer 14 is coated on the surface of the adhesive layer layer 4 described above.
An adhesive strength reducing material 22a such as a festival is printed in a pattern to eliminate the activity of the adhesive.

This printing/coating device 148 is composed of a known printing machine such as an offset printing machine, and is provided on the transport path of the laminate 30, and the printing/coating device 148 coats the surface of the adhesive layer 14 with, for example, An adhesive strength reducing layer 22 is formed by pattern-printing lines such as "opening flow". The laminate 30 on which the adhesive strength reducing layer 22 is formed is wound up by a winding roller 150 and stacked on top of each other.

In the above embodiment, the adhesive 14a forming the adhesive layer 14 is a pressure-sensitive adhesive when forming a sheet-like adhesive material 10 as shown in FIG. Since the adhesive may adhere inadvertently, it is best to apply a rewetting adhesive that immediately dissolves when applied with water and exhibits strong adhesive strength.

As this rewetting type adhesive, for example, a starch-based adhesive such as water-soluble polyethylene, PVA (PVA), or starch glue is used. In addition, in the case of such a single-leaf type (sheet-like) adhesive material 10, the adhesive material 10 as shown in the above embodiment is used.
Unlike the above, the second release layer 24 is not formed on the surface of the adhesive base material 20, and "product name" and "price" are printed on the surface of the adhesive base material 20 as shown in FIG. The printed layer 26a may be formed by appropriately printing lines such as the above.

Furthermore, as shown in FIG. 6, the cuts are composed of a width direction cut 28a consisting of perforations and a length direction cut 28b.
The adhesive piece 10a of an appropriate size may be formed by dividing the wide sheet-like adhesive material 10 into a predetermined size and cutting it at the cuts 28a and 28b.

Moreover, as the adhesive L4a forming the adhesive layer 14,
In addition to the above-mentioned true melt adhesives, various pressure sensitive adhesives can be used.

In addition, it is also possible to use a heat-sensitive type adhesive, such as a long-activation type or an instant adhesive type that is activated when heated and generates adhesive strength. In this case, UV ink or the like may be selected as the adhesive force reducing material. In addition, when a rewet type adhesive is used, a material that does not dissolve even when wetted with water, such as a hot melt type adhesive, may be selected as the adhesive force reducing material.

Further, the printed layer 26 may be formed by printing on the surface of the adhesive base material 20 in advance before laminating the second release layer 24.

Here, to be more specific, it is as follows.

(1) Use a polyester film with a thickness of about 50μ as the adhesive base material, and apply silicone resin manufactured by Toshi Co., Ltd. to one main surface to form a second release layer and form a temporary adhesive layer. A temporary adhesion layer is formed by applying wax manufactured by Nihon Seiro Co., Ltd. as a wax agent to the surface of the polyester film.

Next, an aluminum foil having a thickness of 7 μm to form an easily breakable layer was laminated on this temporary adhesion layer, and the melted wax was dried and solidified.

Furthermore, the adhesive layer 14 is formed by coating the surface of the aluminum foil with an acrylic adhesive (BPS-5127) manufactured by Toyo Ink to a dry film thickness of 5 to 50 μm.

Then, the thickness of the face made by Toyo Ink Co., Ltd. is 100~
Vert coat to a thickness of 0.5μ.

After that, apply release paper manufactured by Shikoku Paper Co., Ltd. to adhesive 1ii.
It was attached to the surface of 14.

At this time, the adhesive strength (a) of the adhesive layer at the adhesive strength reduced layer portion
is approximately 1 g, and the force required to destroy the easily broken layer (b
) is about 200 g, the force (C) required to separate the easily broken layer from the temporary adhesive layer is about 400 g, and the adhesive force (d) of the adhesive layer other than the adhesive strength lowering layer area is about 2 ,000
g, and the force (e) required to peel off the adhesive from the second release layer of the bonded adhesive was approximately 18 g.

The pressure-sensitive adhesive sheet thus constructed is made into label pieces,
Pasted on the material to be pasted (paper box, etc.).

At this time, the adhesive strength (d) to the adhered material is 2°000g
Met.

When an attempt was made to forcefully peel off the pasted label piece from the material to which it was applied, the easily broken layer in the area of the adhesive strength decreasing layer was torn at the border with the easily breaking layer in the area where the adhesive strength decreasing layer was not formed. , it was peeled off from the material to be adhered together with the polyester film forming the adhesive base material.

(2) Use a nylon film with a thickness of about 50μ as the adhesive base material, and apply silicone resin manufactured by Higashishi Co., Ltd. to one main surface to form a second release layer and form a temporary adhesive layer. Using a wax manufactured by Nihon Seiro Co., Ltd. as a waxing agent, the wax is applied to the surface of the nylon film to form a temporary adhesion layer.

Next, a brittle film having a thickness of 7 μm manufactured by Nippon Carbide Co., Ltd. and forming an easily breakable layer was laminated on this temporary adhesion layer, and the melted wax was dried and solidified.

Furthermore, the adhesive layer 14 is formed by coating the surface of the brittle film with an acrylic adhesive (BPS-5127) manufactured by Toyo Ink to a dry film thickness of 5 to 50 μm.

Then, an adhesive strength reducing layer is printed using UV ink manufactured by Toka Shiki Co., Ltd. so that the thickness thereof becomes 100 to 0.5 μm.

After that, release paper manufactured by Shikoku Paper Co., Ltd. was applied to the adhesive layer 14.
pasted on the surface of.

At this time, the adhesive strength (a) of the adhesive layer at the adhesive strength reduced layer portion
is approximately 2g, and the force required to destroy the easily broken layer (b
) is approximately 50 g, the force (c) required to separate the easily breakable layer from the temporary adhesive layer is approximately 100 g, and the adhesive force (d) of the adhesive layer other than the adhesive strength decreasing layer portion is approximately 1 ,500g
The force (e) required to peel off the bonded adhesive material from the second release layer was approximately 16 g.

The pressure-sensitive adhesive sheet thus constructed is made into label pieces,
Pasted on the material to be pasted (paper box, etc.).

At this time, the adhesive force (d) to the adhered material is 1°000g
Met.

When an attempt was made to forcefully peel off the pasted label piece from the material to which it was applied, the easily broken layer in the area of the adhesive strength decreasing layer was torn at the border with the easily breaking layer in the area where the adhesive strength decreasing layer was not formed. , it was peeled off from the material to be adhered together with the nylon film forming the adhesive base material.

[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 example shown in FIG. 1 in a destroyed state. FIGS. 3 and 4 are illustrative views showing an example of an apparatus for manufacturing M carcasses used in the embodiment of the present invention. FIG. 5 is an illustrative view showing an example of an apparatus for manufacturing a laminated material used in an embodiment of the present invention. FIG. 6 is a perspective view showing another embodiment. FIG. 7 is a perspective view of the embodiment illustrated in FIG. FIG. 8 is a perspective view showing how to use the example illustrated in FIG. In the figure, 10 is an adhesive material, 14 is an adhesive layer, 16 is an easily broken layer, 18 is a temporary adhesive layer, 20 is an adhesive base material, 22 is an adhesive strength reducing layer, 24 is a second peeling layer, 30 14a is a laminate, 14a is an adhesive, 16a is an easily broken material, 18a is a temporary adhesive material, 20a is an adhesive material, 22a is an adhesive force reducing material, 100 is an apparatus, 10
・2 is a holding roller, 104 is a release agent coating device, 106a
, 106b is a roller, 108 is a storage tank, 110 is a dryer, 112 is a winding device, 120 is a device, 122 is a holding device, 124 is a temporary adhesive application device, 126a, 126b
128 is a storage tank, 130 is a stacking device, 132 is a roll loading device, 134a, 134b are rollers, 136
140 is a cooling device, 140 is a laminating device, 142 is a roll loading device, 144 is an adhesive coating device, 146 is a dryer, 148 is an adhesion reducing material printing coating device, and 150 is a winding roller. Patent applicant Omatsu Chemical Industry Co., Ltd. Agent Patent attorney Oka 1) Kei Zen (and 1 other person) No. 11 m Fig. 6 2ab l◇a Fig. 7 Fig. 8 (a) (b) (c) 1゜

Claims (1)

[Scope of Claims] 1. The adhesive force of the adhesive layer at the adhesive strength reduced layer portion is a, the force required to destroy the easily breakable layer is b, and the easily breakable layer is separated from the adhesive base material by a temporary adhesive layer. Let c be the force required to peel it off,
A manufacturing method that satisfies the following formulas a<c, b<d, where the adhesive strength of the adhesive layer other than the adhesive strength lowering layer portion is d, and (a) the adhesive base material and the easily broken layer are (b) forming an adhesive layer on one main surface of the easily broken layer; (c) applying the adhesive to a part of one main surface of the adhesive layer; forming an adhesion-reducing layer that reduces the adhesion of the material. 2. The method for manufacturing an easily breakable adhesive material according to claim 1, wherein step (b) includes the step of rolling up the adhesive base material into a roll. 3. The method for manufacturing an easily breakable adhesive material according to claim 1, wherein step (c) includes the step of rolling up the adhesive base material into a roll. 4. The method according to claim 2 or 3, wherein the step (a) includes a step of forming a second release layer on the surface opposite to the surface on which the temporary adhesive layer is formed. Manufacturing method for destructible adhesive material. 5. The method according to any one of claims 1 to 4, wherein the step (a) includes a step of temporarily adhering an easily broken layer to the surface of the synthetic resin film forming the adhesive base material using a temporary adhesion layer. The manufacturing method of the easily destructible adhesive material described in . 6. The easy-to-break method according to claim 5, wherein step (a) includes the step of temporarily adhering an easy-to-break layer to the surface of the transparent synthetic resin film forming the adhesive base material using a temporary adhesion layer. Manufacturing method of adhesive material. 7. The step (a) includes the step of printing and applying wax to form a temporary adhesive layer on the surface of the adhesive base material, and laminating an easily breakable layer on the surface of the wax. A method for producing the easily destructible adhesive material according to any of item 6. 8. Claims 1 to 7, wherein step (a) includes the step of laminating an easily broken material made of aluminum foil on the surface of a temporary adhesive layer formed on the surface of the adhesive base material. A method for manufacturing an easily destructible adhesive material according to any one of the above. 9. Claim 1, wherein step (a) includes the step of laminating an easily broken material made of an easily broken synthetic resin film on the surface of a temporary adhesive layer formed on the surface of the adhesive base material. A method for producing an easily destructible adhesive material according to any one of items 7 to 7. 10. The easily destructible adhesive material according to any one of claims 1 to 9, wherein the step (b) includes a step of printing and applying a pressure-sensitive adhesive to form an adhesive layer. manufacturing method. 11. The easily breakable adhesive according to any one of claims 1 to 9, wherein step (b) includes a step of printing and applying a rewet adhesive to form an adhesive layer. The manufacturing method of the material. 12. The easily destructible adhesive material according to any one of claims 1 to 9, wherein step (b) includes a step of applying a heat-sensitive adhesive to form an adhesive layer. Manufacturing method. 13. The method for producing an easily breakable adhesive according to claim 12, wherein the step (b) includes a step of forming an adhesive layer by applying an adhesive mainly composed of a hot-melt resin. . 14. The easily destructible material according to any one of claims 1 to 13, wherein step (c) includes a step of forming an adhesion reducing layer by applying an adhesion reducing material made of varnish. Manufacturing method for adhesive materials. 15. The easily breakable material according to any one of claims 1 to 13, wherein the step (c) includes a step of forming an adhesion reducing layer by applying an adhesion reducing material made of a synthetic resin. Manufacturing method of adhesive material. 16 The step (c) includes a step of applying an adhesion reducing material made of powder to form an adhesion reducing layer.
A method for manufacturing an easily breakable adhesive material according to any one of claims 1 to 13. 17. The easily breakable adhesive according to any one of claims 1 to 16, wherein the step (c) includes a step of pattern-coating an adhesive strength reducing material on one main surface of the adhesive layer. The method of manufacturing the material. 18. The method for producing an easily destructible adhesive material according to any one of claims 1 to 17, wherein step (a) includes a step of forming a printed layer on the main surface of the adhesive base material. .