JPS61226783A - 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, labels to prevent repositioning attached to openings 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 part of the adhesive coating remains on the adhesive part of the material to be adhered, and the surface of the exposed adhesive coating becomes sticky and attracts dust. However, there were also 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 pasting, does not become sticky due to adhesive buildup on the peeled surface, and does not require a vapor deposition process. That's true.

(Means for Solving the Problems) The present invention includes a surface layer, a release layer that facilitates peeling between the surface layer and the easily destructible layer, and an easily destructible layer laminated on the main surface of the release layer. , an adhesive layer laminated on one main surface of the easily broken layer, and an adhesive force reducing layer laminated on a part of one main surface of the adhesive layer for reducing the adhesive force of the adhesive. The adhesive strength of the adhesive layer at the adhesive strength lowering layer portion is a, the force required to destroy the easily broken layer is b, and the force required to peel the easily broken layer from the release layer is C. ,
It is an easily destructible adhesive material that satisfies the following formula %, where d is the adhesive strength of the adhesive layer other than the adhesive strength lowering layer portion.

(Function) An adhesive force reducing layer that reduces the adhesive force of the adhesive is partially formed on one main surface of the easily breakable layer, and is divided into sections, so that it is difficult to adhere to the adhered material. The adhesive strength of the easily destructible adhesive material differs between the adhesive layer and the reduced adhesion layer, and when the surface layer is peeled off, the easily broken layer is torn and only the easily broken layer in the reduced adhesion layer is separated. peels off from the adhered material.

(Effects of the Invention) According to the present invention, the surface layer and the easily destructible layer can be bonded via the release layer with the adhesive force of the material forming the easily destructible layer.
Since it is laminated by printing and coating, it can be made by vapor deposition as in the past, and various synthetic resins and films can be used as the material for the surface layer, leading to cost reductions. I can do it. 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, It is formed so that it can be adhered with different adhesive forces, so when it is attached to the material to be adhered, each part will be adhered with different adhesive forces, causing the surface layer to deteriorate. When the adhesive layer is peeled off, only the easily broken layer in the adhesive force 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 can be seen that the easily breakable layer has been separated. Therefore, it can be seen at a glance that the pasted adhesive has been peeled off, and it can also be easily determined whether foreign matter or the like has entered the package.

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 a label that is an example of the present invention.

This label 10 is temporarily attached on a release sheet 12, and an adhesive layer 14. Easily destroyed layer 16. Peeling layer 18, surface layer 2
0 are sequentially laminated, and an adhesive force reducing layer 22 that reduces the adhesive force of this adhesive M14 is laminated on a part of the surface of the adhesive layer 14, and a printed layer is formed on the surface of the surface layer 20. 24 is formed.

The adhesive layer 14 is for giving adhesive force to the label 10, and is formed by applying an adhesive such as a pressure-sensitive adhesive, for example, and is formed on one main surface of the easily broken layer 16. , a release sheet 12 that protects the adhesive layer 14 is temporarily attached.

Easily broken N16 is a synthetic resin containing metal powder, gold powder, silver powder, carbon black, etc., or a vinyl chloride and acrylic copolymer resin mixed with an extender pigment (e.g. titanium white, calcium carbonate). Examples include easily breakable resins that can be easily torn by hand, such as objects. Alternatively, a vapor-deposited film formed by vacuum-depositing an evaporative substance such as aluminum, silver, or zinc may be used.

Among them, when the label 10 is bent and attached to a bent part, a relatively flexible one is preferable so that the surface layer 20 does not peel off when it tries to restore to its original state in one day. .

The surface layer 20 is formed to prevent the easily broken layer 16 from being cut or torn, and is temporarily attached to the easily broken layer 16 via the peeling layer 18.

Examples of the surface layer 20 include materials that are relatively stiff and hard to shrink due to heat, such as polyester or nylon film, or paper or synthetic paper.
As will be described later, in order to be able to clearly see the traces of peeling from the surface side of the surface layer 20 when the label is peeled off, it is better to select a transparent or translucent label ( In this way, the easily broken layer 16
It is easy to see that a part of the adhesive remains on the material to be adhered, and a part is peeled off from the material and sticks to the surface layer 20, which is convenient.

Peeling] '1flB temporarily adheres the surface layer 20 and the easily broken layer 16 in a state where they cannot be reattached, and the surface layer 20 and the easily broken layer 1
It is made of a release agent such as silicone resin, paraffin, wax, etc., and is formed between the surface Fi 20 and the easily broken layer 16. Note that the adhesive force between the surface layer 20 and the easily broken layer 16 at this part of the release layer 18 is weaker than the adhesive force of the adhesive layer 14.

The adhesive force reducing layer 22 is formed by pattern-coating a varnish on the surface of the adhesive layer 14, and eliminates the activity of a pressure-sensitive adhesive such as a pressure-sensitive adhesive forming the adhesive layer 14.

That is, the adhesive force of the adhesive N14 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 formed. Even when you tear it 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.

The adhesion reducing layer 20 is suitably formed by pattern printing and coating with the above-mentioned varnish, but it can also be formed by patterning with synthetic resin, powder, etc. that eliminates the activity of the plugging agent. It can also be formed by printing or coating.

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, when the surface layer 20 is peeled off and the easily broken layer 16 is destroyed, a pattern such as the above-mentioned characters "opened" will appear, which will make the label 10 even more attractive. It will meet the intended purpose of use.

In this label 10, the adhesive force of the adhesive N14 at the adhesive strength decreasing layer 22 portion is a, the force required to break the easily breakable layer 16 is b, and the force required to peel off the easily breakable layer 16 from the release layer 18 is as follows. When the force required to release the release sheet 12 from the adhesive M14 is C, the adhesive force of the adhesive layer 14 other than the adhesive force lowering layer 22 is d, and the force required to separate the release sheet 12 from the adhesive M14 is e, the following formula % is obtained. %).

To use this label 10, it is peeled off from the release sheet 12 and attached to the adhesive layer 14, for example as shown in FIG. 8(a).
(b) As shown in (c), it is attached as a price tag or attached to the opening of a candy package.

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

In this case, the surface 520 is attached to the easily broken layer 1 through the release layer 18.
6, the easily broken layer 16 is strongly adhered to the adhered material A with the adhesive layer 14, and the adhesive layer 14 described above is adhered as is in the area where the adhesive force reducing layer 22 is formed. Compare the parts that are glued together. Therefore, as shown in FIG. 2, when an attempt is made to peel off the label 10, the easily broken layer 16 in the adhesive force reducing layer 22 portion and the adhesive layer 14 are exposed as they are without forming the adhesive force reducing layer 22. In the boundary part with the easily broken layer 16,
The easily broken layer 16 in the adhesive strength reducing layer 22 part is peeled off from the adhered material A, and the easily broken layer 16 thereon is torn off from the easily broken layer 16 part in the adhesive layer 14 part, and the easily broken layer 16 is torn off from the adhered material A. It gets stripped away even more.

Then, in the easily broken layer 16, the portion where the adhesive strength reducing layer 22 is not formed remains stuck to the adhered material A as it is. Therefore, once the surface layer 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 surface Ji20 is no longer able to be attached to the surface of the peeled N18 and does not return to its original state, the unsealed state can be clearly seen at a glance.

In this example, the label 10 was used for a candy package, but it can also be used for a medicine package or an envelope.

It goes without saying that it can be used as a part to be sealed, such as a bag, and as a price tag displaying the price.

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.

EXAMPLES Hereinafter, in order to further clarify the embodiments of the present invention, they will be further described based on an example of the method for manufacturing the adhesive material according to the present invention.

FIG. 3 is an illustrative view showing an example of an apparatus for manufacturing a laminate 30 used in an embodiment of the present invention.

This laminate 30 has a release layer 18 and an easily broken layer 16 laminated on the surface layer 20 in that order.

The device 100 includes a surface material 20 forming a strip-shaped surface layer 20.
It includes a holding roller 102 for holding a in a roll shape. One end of the surface material 20a held by the holding roller 102 is unwound and guided to the release agent application device 104.

The release agent coating device 104 coats one surface of the surface material 20a with silicone resin, fluororesin, paraffin, etc., for example.
It is used to print and apply a stripping agent 18a such as Wanx, and includes two rollers 106a and 106b and a storage tank 108, and the stripping agent 18a is applied while rotating the rollers 106a and 106b. This release agent 18a is
Next, it is guided to a dryer 109 including a provided heater, and
dried. Note that as the release agent coating device 104, a gravure roll coater, a reverse roll coater, or the like may be used, or a known printing machine such as an offset printing machine or a screen printing machine may be used.

#The surface material 20a coated with the layering agent 18a is sent to a laminating device 110 that laminates the next easily breakable material 16a. This laminating device 110 includes a roller 112 that applies an easily broken material 16a such as a synthetic resin containing metal powder. In this laminating apparatus 110, in order to laminate the easily breakable material 16a on the surface of the surface material 20a coated with the release agent 18a, the material is coated while being pressed by a roller 114, and then guided to a cooler 116 provided. . Cooler 1
16 is for cooling the easily breakable material 16a of the laminate 30. In the cooler 116, MNN2O2 easily destructible material 1
6a is cooled and solidified to form an easily broken layer 16.

The stacked body of this laminate 30 is rolled up by a stacking device 12 shown in FIG.
Sent to 0.

The lamination device 120 shown in FIG. 4 includes a device 122 for making salt from the rolled body of the laminated body 30, and the laminated body 30 pulled out from the rolled body base unit 122 loaded with this rolled body is
It is sent to the next adhesive applicator 124.

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

When applying such an adhesive to the surface of the easily breakable layer 16 of the laminate 30, it is applied using, for example, a coating device 124 as shown in FIG. 4, which applies the adhesive while heating it to an appropriate temperature. The laminate 30 to which the adhesive 14a has been printed can be dried in a dryer 126 including a device for blowing out cold air.
The adhesive layer 14 is formed by drying the adhesive 14a.

In this way, the laminate 30 on which the adhesive ff114 has been formed is led to the printing coating device 128 where the adhesion reducing layer 22 is formed next. This printing coating device 128
In this method, a pattern of an adhesive force reducing material 22a such as varnish is printed on the surface of the adhesive layer 14 described above, which eliminates the activity of the adhesive layer 14.

The printing and coating device 128 is made of a known printing machine such as an offset printing machine, and is provided on the transport path of the laminate 30. The printing and coating device 128 coats the surface of the adhesive layer 14 with the A reduced adhesion Jii 22 is formed by pattern-printing lines such as "Completed".

The laminate 30 on which the adhesive strength reducing layer 22 has been formed is subsequently led to a lamination device 130 for the release sheet 12.

This release sheet laminating device 130 has two openings 13.
2a and 132b, and has a release agent layer 12a formed on its surface by being pressed between two rollers 132a and 132b of this laminating device 130, and an adhesive layer of this laminate 30. The laminate 30 and release sheet 12 are superimposed on each other, and the superimposed laminate 30 and release sheet 12 are wound up on a winding roller 134.

The laminating apparatus 140 shown in FIG. 5 differs from the laminating apparatus 120 shown in FIG. This is an apparatus for forming an adhesive material using a laminated material on which a release sheet 12 is temporarily attached. This laminating device 140 includes an adhesive layer 14 laminated on the main surface of the easily destructible layer 16 of a laminate 30 formed by laminating a surface [20, a peeling layer 18, and an easily destructible layer 16] in this order; The apparatus includes a device 142 for loading a roll of laminated material including a release sheet 12 temporarily attached to the main surface of the laminate.

The laminated material pulled out from this roll loading device 142 is
It is guided to a peeling device 144 that peels off the laminate 32 of the surface layer 20, the peeling layer 18, the breakable layer 16, and the adhesive layer 14, and the release sheet 12 temporarily attached to the surface of the adhesive layer 14. This peeling device 44 includes a roller that separates the laminated material 32 and the release sheet 12.
4, the laminated material 32 consisting of the surface layer 20, the release layer 18, the easily broken layer 16, and the adhesive layer 14, from which the release sheet 12 has been peeled off, is guided to a printing coating device 146 for the adhesive force reducing material 22a.

This adhesion reducing agent coating device 146 is comprised of a known printing machine or coating device, and prints lines such as appropriate characters such as "opened" or pictures on a part of the surface of the adhesive layer 14. , is a device for coating.

In this adhesion reducing material application device 146, the laminated material 32 on which a suitable pattern has been printed and applied is led to a drying device 148.

This drying device 148 includes, for example, an adhesion reducing material coating bag R.
In the case of UV-type ink or the like printed in step 146, an ultraviolet irradiation device or the like is included.

After the adhesion reducing material 22a is dried by the drying device 148, the laminate material 32 is separated into two layers in order to overlap the release sheet 12 and the laminate material 32, which have been peeled off by the peeling device 144, again. one roller 15
It is led to a superposition device 152 which includes Oa and 150b.

A laminate consisting of a surface layer 2o, a release layer 18, an easily broken layer 6, and an adhesive layer 14 on whose surface an adhesive force reducing layer 22 is formed is superimposed on a release sheet 12 by this superposition device 52. The material 32 is taken up by the winding roller 154
It is wound up.

FIG. 6 is an illustrative view showing yet another laminating apparatus 160, which replaces the laminating apparatus 120 shown in FIG.

This laminating device 160 includes a roll loading device 162 for loading rolls of release sheets 12 .

The release sheet 12 pulled out from the roll loading device 162 of the release sheet 12 has its release agent layer 12a side set as the lower surface in FIG. is directed to device 164. In this adhesion reducing material application device 164, varnish or the like which is an adhesion reducing material is printed and applied. Then, in this adhesion reducing material coating device 164 , the release sheet 12 on which the image line of an appropriate pattern has been printed and coated is subsequently guided to the adhesive coating device 166 .

This adhesive application device 166 is for applying the adhesive 14a to the surface of the release agent JW12a of the release sheet 12, and includes a main roller 168a and the main roller 1
It includes a roller 168b provided opposite to 68a. The main roller 168a has a storage tank 170 at its lower part.
The main roller 16 is applied to the surface of the release agent layer 12a of the release sheet 12, which is immersed in the adhesive 14a collected in the adhesive 14a and is sandwiched between the main roller 168a and the roller 168b.
At step 8a, adhesive 14a is applied.

Then, a release sheet 12 is coated with an adhesive 14a.
is led to a dryer 172 that includes a heater, for example. In the dryer 172, the adhesive 14a printed and coated on the release sheet 12 is dried to form the adhesive layer 14, and the laminate of the adhesive layer 14 and the release sheet 12 is dried on a separately prepared surface jit 20. It is guided to a laminating device 174 where a laminated body 30 consisting of a peeling layer 18 and an easily breakable layer 16 is assembled.

The stacking device 174 of the stack 30 includes a device 176 for loading rolls of the stack 30. This rolling salt making device 1
The laminated body 30 led out from the roller 76 is
8a and 178b, and the above-mentioned release sheet 1
The surface of the adhesive layer 14 formed on the surface of 2 and the laminate 30
are overlapped with the surface of the easily breakable layer 16, pressed by two rollers 178a and 178b to overlap, and wound up on a winding roller 179 in the overlapping state.

In the adhesive material manufactured by this laminating apparatus 160, initially, the adhesion reducing layer 22 printed and coated on the release agent layer 12a surface of the release sheet 12 is placed on the release agent layer 12a surface, but the laminate 30 For example, when the release sheet 12 is peeled off from the surface of the adhesive 514 during use, the releasability of the release agent layer 12a of the release sheet 12 causes the adhesive force of the adhesive layer 14 to be The adhesive force reducing layer 22 will be transferred and transferred to the surface of the adhesive layer 14.

In order to make a label using the adhesive material manufactured in this way, this laminate may be loaded into a label manufacturing apparatus including a printing apparatus or the like.

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 the laminate 30 in which the release sheet 12 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 184 is comprised of a known printing machine such as an offset printing machine. And this printing device 184
As a result, a printed layer 24 on which lines such as "product name" are printed is formed on the surface of the surface Jti 20. The laminate on which the printed layer 24 was formed in this way was cut into a die cutting machine 1.
86.

The die cutting machine 186 includes a so-called die cutter having a cutting blade, and the die cutter cuts the surface layer 20 and the release layer 1.
8. Cuts in appropriate shapes are made in the easily broken layer 16, the adhesive layer, and the printing H24.

Note that the die cutting machine 186 may be one using a roll with a cutting blade, a so-called guiroll.

The scored laminate is placed between rollers 188a and 1
The unnecessary part and the label 10 (necessary part) are separated at 88b, and the unnecessary part is wound up into a roll by the scrap removal roller 190, and the label 10 (necessary part) is rolled up temporarily attached to the release sheet 12. It is wound up into a roll by rollers 192. Note that a score forming machine may be provided in place of the die cutting machine 186 and the winding roller 192.

The scoring machine includes a cutting blade. This cutting blade has a surface layer 20. Peeling N18. Easily destroyed layer 16. and adhesive layer 14
This is for making a cut in the label and separating it into each label piece 10a.

Here, more specifically, it is as follows.

(1) Use a polyester film with a thickness of about 50μ as the surface layer, use silicone resin manufactured by Toshi Co., Ltd. as the silicone resin to form the release layer, apply the silicone resin to the surface of the polyester film, and peel it off. form a layer.

Next, a synthetic resin containing aluminum powder with a thickness of 7 μm to form an easily breakable layer was coated on the release layer and solidified.

Furthermore, the adhesive layer 14 is formed by coating the surface of the easily broken layer with an acrylic adhesive (BPS-5127) manufactured by Toyo Ink to a dry film thickness of 5 to 50 μm. After that, the thickness of the face made by Toyo Ink Co., Ltd. was 100~0.
．． Part coat it to a thickness of 5μ.

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 1 g, and the force required to destroy the highly destructive layer (b
) is approximately 200 g, the force (C) required to separate the high-destructibility layer from the release layer is approximately 400 g, and the adhesive force (d) of the adhesive layer other than the adhesive strength-lowering layer portion is approximately 2, 000
g, and the force (e) required to peel the release sheet from the adhesive layer was about 20 g.

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

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

When I tried to forcefully peel off the pasted label piece from the material to which it was attached, the high-destruction layer in the area of the low-adhesion layer was torn off at the border with the high-destruction layer on the area where the low-adhesion layer was not formed. , it was peeled off from the adhered material together with the polyester film forming the surface layer.

(2) A nylon film with a thickness of about 50 μm is used as the surface layer, a fluororesin is used to form a release layer, and the fluororesin is applied to the surface of the nylon film to form the release layer.

Next, a synthetic resin containing aluminum powder was coated on the release layer to a thickness of 7 μm to form a high-destructibility layer and solidified.

Furthermore, the adhesive layer 14 is formed by coating the surface of the highly destructive layer with an acrylic adhesive (BPS-5127) manufactured by Toyo Ink to a dry film thickness of 5 to 50 μm. Thereafter, an adhesion reducing layer is printed with a UV ink manufactured by Toka Shiki Co., Ltd. to a thickness of 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 high-destruction layer (b
) is about 50 g, the force (C) required to separate the high-destructibility layer from the release layer is about 100 g, and the adhesive force (d) of the adhesive layer other than the area of the adhesive layer with reduced adhesion is about 1. 500g
The force (e) required to peel the release sheet from the adhesive layer was about 15 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 I tried to forcefully peel off the pasted label piece from the material to which it was attached, the high-destruction layer in the area of the low-adhesion layer was torn off at the border with the high-destruction layer on the area where the low-adhesion layer was not formed. , it was peeled off from the adhered material together with the nylon film forming the surface layer.

FIGS. 9 and 10 are cross-sectional views showing another embodiment.

This adhesive material 10 further has a second layer on the main surface of the highly destructive layer 16.
Highly destructive layers 26 are laminated.

The high-destructibility layer 16 is a layer formed by printing and coating a synthetic resin as in the previous embodiment, and the second high-destruction layer 26 laminated below this high-destruction layer 16 is a layer formed by printing and coating a synthetic resin. It is adhered to the lower surface of the release layer 18 formed on the main surface of the surface layer 20 by adhesive force.

As the second high-destructibility layer 26, it is optimal to use a material such as aluminum foil, which is so easily broken that it can be torn by hand, and which also has a hiding power.

This second highly destructive layer 26 is formed in order to prevent the adhesion reducing layer 22 formed in the lower layer from being seen through from above the surface layer 20.

This second high-destructibility layer 26 is also selected to be highly breakable so that it can be torn by hand in the same manner as the high-destruction layer 16. Then, the surface Jit 20 is temporarily attached to the highly destructive layer 16 via the peeling layer 18, and the highly destructive layer 16 and the second
The highly destructive layer 26 is strongly adhered to the adhered material A with the adhesive layer 14, and the above-mentioned adhesive layer 14 is adhered as is in the area where the adhesive force reduction layer 22 is formed. The adhesive is weaker than the other parts. Therefore, as shown in FIG. 10, when trying to peel off the adhesive material 10,
At the boundary between the highly destructible layer 16 and the second highly destructible layer 26 where the adhesive force reducing layer 22 is formed and the easily destructible layer 16 where the adhesive layer 14 remains as it is, the adhesion reducing layer 22 portion The easily destructible layer 16 and the second easily destructible layer 26 are peeled off from the adhered material A, and the easily destructible layer 16 and the second easily destructible layer 26 portion of the adhesive layer 14 are torn off, and the adhered material It will be peeled off from A.

The embodiment shown in FIG. 9 can be manufactured, for example, by the following method.

11 and 12 show a manufacturing apparatus showing an example of the manufacturing method of the embodiment shown in FIG. 9. FIG.

The device 200 includes a surface material 20 forming a strip-shaped surface layer 20.
It includes a holding roller 202 for holding a in a roll shape. One end of the surface material 20a held by the holding roller 202 is unwound and guided to the release agent coating device 204.

The release agent applicator 204 applies a release agent 1 such as silicone resin or fluororesin to one surface of the surface material 20a.
8a and includes two rollers 206a and 206b. The lower part of the roller 206a is immersed in the release agent 18a stored in the storage tank 208. Therefore, by rotating rollers 206a and 206b, the surface material 2 guided between them
A release agent 18a is printed and applied on the surface of 0a.

Note that as the release agent coating device 204, a coating device such as a gravure roll coater, a reverse roll coater, or an air knife coater may be used, or a known printing machine such as an offset printing machine or a screen printing machine may be used. .

Then, a surface material 20a is printed and coated with a release agent 18a.
is led to a dryer 210 that includes a heater, for example. In the dryer 210, the release agent 18a printed and coated on the surface material 20a is dried to form the release layer 18. Surface material 20a with peeling layer 18 formed in this way
is guided to the winding device 212.

Then, the peeling layer 18 is formed and the surface material 20a rolled up into a roll is placed in another lamination device 220 shown in FIG. 12.

Laminating device 220 includes two rollers 222a and 222
Contains b. The roller 222a is immersed in synthetic resin or adhesive 16a stored in a storage tank 224. Therefore, by rotating the rollers 222a and 222b, the release layer 1 of the facing material 20a guided between them
A resin 16a is printed and coated on the surface of 8.

A surface material 20a coated with resin 16a
is further guided to a laminating device 226 for the second easily destructible material 26a.

This laminating device 226 uses easily destructible material 2 such as aluminum foil.
It includes a device 228 for loading a roll of 6a.

In this laminating device 226, a second easily breakable material 26a is applied to the surface of the surface material 20a coated with the resin 16a.
In order to overlap them, they are pressed by a roller 230 and then guided to a bonding device 232 provided.

This adhesive device 232 uses EV as the resin 16a.
When using adhesives containing water-soluble resins such as A-based, vinyl acetate-based, acrylic, etc., or solvent-based adhesives made of salt-vinyl acetate, urethane, acrylic, etc., use a "dryer" to remove rubber-based, E
When using a VA-based hot melt adhesive, a "cooler" is used.

In this way, the peeling layer 18, the easily broken layer 16, and the second easily broken layer are formed on the surface material 20a. A laminate 30 in which 26 are laminated is manufactured.

This laminate 30 is used to manufacture the embodiment shown in FIG. 9, but the rest is the same as the embodiment described above.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a label that is an embodiment of the present invention. FIG. 2 is a sectional view showing the destroyed state of the embodiment. FIG. 3 is an illustrative view showing an example of an apparatus for manufacturing a laminate used in an embodiment of the present invention. FIG. 4 is an illustrative view showing an example of an apparatus for manufacturing a laminated material used in an embodiment of the present invention. FIG. 5 and FIG. 6 are illustrative views showing other examples of the apparatus for manufacturing the laminated material used in the embodiment of the present invention. FIG. 7 is an illustrative view showing an example of an apparatus for manufacturing labels. FIG. 8 is a perspective view showing how to use the embodiment. FIGS. 9 and 10 are cross-sectional views showing another embodiment. 11 and 12 show a manufacturing apparatus showing an example of the manufacturing method of the embodiment shown in FIG. 9. FIG. In the figure, 10 is a label, 12 is a release sheet, 14 is an adhesive layer, 16 is an easily broken layer, 18 is a release layer, 20 is a surface layer, 22 is an adhesion reducing layer, 24 is a printing layer, and 26 is a second layer. , 30 is a laminate, 32 is a laminate material, 14a is an adhesive, 16a is an easily breakable material, 18a is a release agent, 20a is a surface material, 22a is an adhesion reducing material, 100 is a device, 102 is a holding material 104 is a release agent coating device, 110 is a lamination device, 112 is a roll loading device, 114a, 114b are rollers, 116 is a cooler, 120 is a lamination device, 122 is a roll loading device, 124 is an adhesive coating device , 126 is a drying device, 128 is an adhesion reducing agent printing and coating device, 130 is a release sheet laminating device, 132a, 132b are rollers, 134
140 is a winding roller, 140 is a laminating device, 142 is a roll loading device, 144 is a peeling device, 146 is an adhesion reducing agent coating device, 148 is a drying device, 150a, 150b are rollers, 152 is a superimposing device, 154 is a Take-up roller, 1
60 is a laminating device, 162 is a roll loading device, 164 is an adhesion reducing material printing and coating device, 168a is a main roller, 1
68b is a roller, 166 is an adhesive coating device, 170 is a pan, 172 is a drying device, 174 is a laminating device, 17
6 is a roll loader, 178a and 178b are rollers, 1
79 is a winding roller, 180a is a label manufacturing device, 18
2 is a holding device, 184 is a printing device, 186 is a die cutting machine, 1
83a and 188b are rollers, 190 is a scrap removing roller,
192 is a winding roller, 200 is a device, 202 is a holding roller, 204 is a release agent coating device, 206a, 206b are rollers, 208 is a storage tank, 210 is a dryer, 212 is a winding device, 220 is a laminating device, 222a, 222b 224 is a storage tank, 226 is a laminating device, 228 is a winding and laminating device, 230 is a roller, and 232 is a bonding device. Patent Applicant Omatsu Chemical Industry Co., Ltd. Agent Patent Attorney Oka 1) Kei Zen (and 1 other person) Figure 1 Shiphum Figure 7 National Figure 8 (a) (b) (c) Figure 10
,. Figure 9 12 1Za

Claims (1)

[Scope of Claims] 1. A surface layer, a release layer that facilitates peeling between the surface layer and the easy-to-break layer, an easy-to-break layer laminated on the main surface of the release layer, and one of the easy-to-break layers. An adhesive layer laminated on a main surface, and an adhesive force reducing layer laminated on a part of one main surface of the adhesive layer for reducing the adhesive force of the adhesive, the adhesive force being: The adhesive strength of the adhesive layer in the region of the adhesive layer with decreased adhesive strength is a, the force required to destroy the easily destructible layer is designated as b, the force required to peel off the easily destructible layer from the release layer is designated as c, and the adhesive strength of the adhesive layer in the region other than the region with decreased adhesive strength is designated as b. An easily destructible adhesive material that satisfies the following formula: a<c, b<d, where d is the adhesive force of the adhesive layer. 2. The easily destructible adhesive material according to claim 1, wherein the adhesive layer has a release sheet temporarily attached to one main surface thereof. 3. The easily destructible adhesive material according to claim 1 or 2, wherein the surface layer is made of a synthetic resin film. 4. The easily destructible adhesive material according to claim 3, wherein the surface layer is made of a transparent synthetic resin film. 5. The easily broken adhesive material according to any one of claims 1 to 4, wherein the easily broken layer is formed by printing and coating a synthetic resin. 6. The easily broken adhesive material according to claim 5, wherein the easily broken layer is formed by printing and coating a synthetic resin containing metal powder. 7. The easily breakable adhesive material according to any one of claims 1 to 6, wherein the release layer is formed by printing and coating a silicone resin. 8. The easily destructible adhesive material according to any one of claims 1 to 7, wherein the adhesive strength reducing layer is formed by printing and applying varnish. 9. The easily destructible adhesive material according to any one of claims 1 to 7, wherein the adhesive strength reducing layer is formed by printing and coating a synthetic resin. 10. The easily destructible adhesive material according to any one of claims 1 to 7, wherein the adhesive strength reducing layer is formed by applying powder. 11. The easily destructible adhesive material according to any one of claims 1 to 10, wherein the adhesive force reducing layer is formed by pattern printing and coating on one main surface of the adhesive.