JPS61226778A - 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 (Industrial Application Field) This invention relates to a method for producing a breakable adhesive material, in which when the surface layer is peeled off by hand, the breakable layer underneath is easily broken. In particular, the present invention relates to a method for producing an easily destructible adhesive material suitable for use in, for example, price tags and labels to prevent repositioning attached to 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 it can be reattached so that no one knows what happened after a foreign object was mixed into the package, so all you have to do is 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, some 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, making it difficult to form characters etc. with the remaining vapor deposited film. , cannot 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. It is to provide.

(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, and the force required to peel off the easily broken layer from the surface layer at the temporary adhesive layer is C.
A manufacturing method that satisfies the following formula %, where d is the adhesive strength of the adhesive layer other than the adhesive strength lowering layer portion, and (a) the surface material forming the surface layer and the easily broken layer are (b) forming an adhesive layer on one main surface of the easily broken layer; (C) temporarily adhering the adhesive layer to a part of one main surface of the adhesive layer; This is a method for producing an easily destructible adhesive material, including the step of forming an adhesion reducing layer that reduces the adhesive strength of an adhesive.

(Function) An adhesive force reducing layer that reduces the adhesive force of the adhesive is partially formed on one main surface of the easily broken layer, and is divided and formed, so that it cannot be attached to the adhered material. The adhesive strength of the easily destructible adhesive material differs between the adhesive layer and the layer with reduced adhesion, and when the surface layer is peeled off, the easily destructible layer is torn and the easily broken layer in the reduced adhesion layer is Only the adhesive peels off from the adhered material.

(Effects of the Invention) According to the present invention, the surface layer and the easily broken layer are laminated with a temporary adhesion layer such as wax, so that they can be produced without vapor deposition as in the past. Various synthetic resins and films can be used as materials, which can lead 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, It is formed so that it is 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 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 manufactured by the manufacturing method according to the present invention.

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

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 label 10 is bent and attached to a bent part, the surface layer 20 is relatively flexible and does not peel off when it tries to restore to its original state against the adhesive force of the temporary adhesive layer 18. Something is good.

The surface layer 20 is formed to prevent the easily broken layer 16 from being cut or torn, and is temporarily bonded to the easily broken layer 16 via the temporary bonding 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 semi-transparent one. If you do this, the easily broken layer 16
It is easy to see that a part of the label remains on the adhered material, and a part is peeled off from the adhered material and sticks to the surface layer 20, which further matches the intended use of the label.

The temporary adhesion layer 18 is for temporarily adhering the surface layer 20 and the easily broken layer 16 in a state where they cannot be reattached, and is made of, for example, a wax agent such as paraffin or wax. It is formed between the destructible layer 16 and the destructible layer 16 . Note that the adhesive force between the surface layer 20 and the easily broken layer 16 due to the temporary adhesive layer 18 is weaker than the adhesive force of the adhesive layer 14.

The adhesive strength reducing layer 22 is formed by coating a pattern of a face 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 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 formed. Even when the adhesive layer 14 was peeled off by hand, the adhesive layer 14 remained in contact with the adhered material and was adhered to such an extent that it could not be easily peeled off, but an adhesive strength-reduced layer 22 was formed. The parts are formed so that they can be peeled off relatively easily from the adhered material.

This adhesive strength reducing layer 22 is usually formed by pattern coating the above-mentioned face etc., but it can also be formed using synthetic resin, UV ink, oxidative polymerization type ink, etc. that eliminates the activity of the plugging agent. For example, the pattern may be formed by coating the pattern with ink such as, vegetable or mineral powder such as wheat flour, starch, talc, etc.

The adhesive strength reducing layer 22 is pattern-printed with lines such as letters and pictures such as "How to open the package".

By coating, as 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'' appears, which makes the label 10 even more attractive. It will meet the intended purpose of use.

In this label 10, the adhesive strength of the adhesive layer 14 at the adhesive strength decreasing layer 22 portion is a, the force required to destroy the easily breakable layer 16 is b, and the easily breakable 1ii16 is the temporary adhesion layer in one day. The force required to peel the release sheet 12 from the adhesive layer 14 is C, the adhesive force of the adhesive layer 14 other than the adhesive layer 22 is d, and the force required to peel the release sheet 12 from the adhesive layer 14 is e. When, the following formula (% formula %) is satisfied.

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).
As shown in (b) and (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 layer 20 has the temporary adhesion layer 18 and the easily broken layer 1
6, the easily broken layer 16 is strongly adhered to the adhered material A with the adhesive layer 14, and the adhesive layer 14 is adhered as is in the area where the adhesive force reducing layer 22 is formed. The adhesive is weaker than the other parts. Therefore, as shown in FIG. 2, when an attempt was made to peel off the label 10, the easily broken layer 16 in the adhesive strength reducing layer 22 portion and the adhesive layer 14 were exposed without forming the adhesive strength reducing layer 22. At the boundary with the easy-to-break layer 16, the easy-to-break layer 16 at the adhesive strength reducing layer 22 part is peeled off from the adhered material A, and the easy-to-break layer 16 is placed on top of the adhesive layer 14.
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 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 layer 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 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.

An embodiment of the present invention will be described below based on an example of an adhesive manufacturing apparatus according to the present invention.

FIG. 3 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 temporary adhesion 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 20 a held by the holding roller 102 is unwound and guided to the temporary adhesion coating device 104 .

The temporary adhesion coating device 104 applies a temporary adhesion material 18a such as paraffin or wax to one surface of the surface material 20a.
It is for printing and coating, and has two rollers 106.
a and IQ 6 b, including a storage tank 108. Temporary material 1
The surface material 20a coated with 8a is then coated with the next easily breakable material 16a
The materials are sent to a laminating device 110 that overlaps and laminates them. This laminating device 110 is made of easily destructible material 16a such as aluminum foil.
It includes a device 112 for loading a roll of rolled up material. In this laminating device 110, in order to overlay the breakable material 16a on the surface of the surface material 20a coated with the temporary adhesive material 18a, the breakable material 16a is overlaid while being pressed by rollers 114a and 114b, and then placed on the cooling tal 16 provided. be guided. That is, one end of the breakable material 16a held in a roll is unwound and guided between the roller 114a and the corresponding roller 114b. At this time, these rollers 114a and 114b
In between, there is a surface material 20a on which a temporary adhesive material 18a is applied.
are guided, so that these rollers 114a
and 114b, the surface material 20a and the easily broken material 16a
and are overlapped with the temporary adhesive material 18a in between. In this way, the laminate 30 in which the easily destructible materials 16a are stacked is guided to the cooler 116. The cooler 116 is a laminate 30
This is for cooling the temporary adhesive material 18a. Cooler 11
6, the temporary adhesive material 18a of the laminate 30 is cooled and solidified to form the temporary adhesive layer 18.

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

The stacking device 120 shown in FIG. 4 includes a device 122 for loading the rolled body of the stacked body 30, and the stacked body 30 pulled out from the rolled body loading device 122 for loading 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 true melt adhesive is used.

When applying such an adhesive to the surface of the easily breakable N16 of the laminate 30, it may be applied, for example, using a coating device 124 as shown in FIG. 4, which applies the adhesive while heating it to an appropriate temperature. If the adhesive 14a is applied by printing, the laminate 30 is 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 layer 14 is formed
is then directed to a print coating device 128 which forms the adhesion reducing layer 22 that is provided. In this printing coating device 128, the adhesive layer 14 is coated on the surface of the adhesive layer 14 described above.
A pattern of adhesion reducing material 22a such as varnish is printed to eliminate the activity of the adhesive.

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 adhesive force 1i22 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 rollers 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. 14 side surfaces are superimposed, and the superimposed stacked body 30 and release sheet 12 are wound up by a winding reroller 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 layer 20, a temporary adhesive layer 18, and an easily destructible layer 16 in this order, and the adhesive layer 14, which is laminated on the main surface of the easily destructible layer 16. The device 142 includes a device 142 for stacking 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 led to a peeling device 144 that peels off the laminate material 32 of the surface layer 20, temporary bonding layer 18, easy-to-break layer 16, and adhesive layer 14, and the release sheet 12 temporarily attached to the surface of the adhesive layer 14. . This peeling device 144 includes a roller that separates the laminated material 32 and the release sheet 12.
4, the release sheet 12 is peeled off and the surface layer 20 is temporarily attached! 18, the laminated material 32 consisting of the easily breakable layer 16 and the adhesive layer 14 is guided to the m-print coating device 146 for the adhesive force reducing material 22a.

This adhesion reducing material application device 146 is composed of a known printing machine or application device, and prints, for example, appropriate characters such as "opened" or lines such as pictures on a part of the surface of the adhesive l1i14. This 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.

The drying device 148 includes, for example, an ultraviolet irradiation device in the case of UV type ink printed and applied by the adhesion reducing agent coating device 146.

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.

The surface layer 20, the temporary adhesion layer 18, and the easily broken layer 1 are superimposed on the release sheet 12 by this superimposition device 152.
6 and the adhesive layer 14 on the surface of which the adhesive force reducing layer 22 is formed.
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 loader 162 of the release sheet 12 has its release agent layer 12a surface as the lower surface in FIG. is directed to device 164. In this adhesive force reducing material application device 164, a face etc. which is an adhesive force reducing material is printed and applied. Then, in this adhesion reducing agent coating device 164 , the release sheet 12 on which lines of a suitable pattern have been printed and coated is subsequently led to an adhesive coating device 166 .

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

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 formed into a separately prepared surface layer 20. , temporary adhesion layer 1 day and easily breakable layer 16
It is guided to a laminating device 174 with a laminated body 30 consisting of.

The stacking device 174- for the stack 30 includes a device 176 for loading rolls of the stack 30. The laminated body 30 led out from this roll loading device 176 is loaded onto two rollers 1.
78a and 178b, and the surface of the adhesive layer 14 formed on the surface of the release sheet 12 described above and the laminate 3
The surfaces of the easily breakable eyebrows 16 of No. 0 are overlapped, pressed by two rollers 178a and 178b to be overlapped, and the overlapping state is taken up by a winding roller 179.

Initially, in the adhesive material manufactured by this laminating device 160, the adhesive strength reducing layer 22 printed and applied on the release agent layer 12a side of the release sheet 12 is placed on the release agent layer N12a side, but the laminate 30 and After being superimposed, for example, when the release sheet 12 is peeled off from the surface of the adhesive 7514 during use, the adhesive force of the adhesive layer 14 is increased by the releasability of the release agent layer 12a of the release sheet 12. The deterioration layer 22 will be transferred and transferred to the surface of the adhesive Fi14.

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 holds a roll of the laminate 30 in which the release sheet 12 is laminated on the surface of the adhesive layer 14, and the release sheet 12 pulled out from the holding device 182 and the laminated body. The laminate consisting of the body 30 is led 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 is formed on the surface of the surface layer 20, on which lines such as "product name" are printed, for example. The laminate on which the printing layer 24 has been formed in this way is cut out by a die cutting machine 186.
guided by.

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 temporary bonding layer 1.
8. Easily broken layer 16, adhesive layer 14, and printed layer 24
A cut of an appropriate shape is made in the.

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
88b separates the unnecessary part and the label 10 (necessary part), 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. Temporary layer 18. Easily destroyed layer 16. and adhesive layer 1
4 to separate each label piece 10a.

Here, more specifically, it is as follows.

(1) As the surface layer, a polyester film with a thickness of about 50 μm is used, and as a wax agent to form a temporary adhesive layer, Japanese wax is used to coat the surface of the polyester film using wax manufactured by Honseiro Co., Ltd. to form a temporary adhesion layer.

Next, an aluminum foil having a thickness of 7 microns was laminated to form an easily breakable layer 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.

After that, the thickness of the face made by Toyo Ink Co., Ltd. was 1mm.
Vert coat to a thickness of ~0.5μ.

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 in the lower layer part
is approximately 1 g, and the force required to destroy the easily broken layer (b
) is approximately 200 g, the force (C) required to separate the easily broken layer from the temporary adhesive layer is approximately 400 g, and the adhesive force (d) of the adhesive layer other than the adhesive strength decreasing 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,
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 I tried to forcibly remove the attached label piece from the material to which it was attached, the easily broken layer in the lower adhesive strength layer was torn at the border with the easily broken layer in the area where the adhesive strength lowering layer was not formed. , it was peeled off from the adhered material together with the polyester film forming the surface layer.

(2) Using a nylon film with a thickness of about 50 μm as the surface layer, and applying the wax on the surface of the nylon film using Nihon Seiro Co., Ltd. wax as the wax agent to form the temporary adhesive layer. 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.

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 in the lower layer part
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 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 forcibly remove the attached label piece from the material to which it was attached, the easily broken layer in the lower adhesive strength layer was torn at the border with the easily broken layer in the area where the adhesive strength lowering layer was not formed. , it was peeled off from the adhered material together with the nylon film forming the surface layer.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a label 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. 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 example illustrated in 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 temporary adhesive layer, 20 is a surface layer, 22 is an adhesive strength reducing layer, 24 is a printing layer, and 30 is a laminated layer. 32 is a laminated material, 14a is an adhesive, 16a is an easily broken material,
18a is a temporary adhesive material, 20a is a surface material, 22a is an adhesive force reducing material, 100 is a device, 102 is a holding roller, 104 is a temporary adhesive material application device, 110 is a lamination device, 112 is a roll loading device, 114a, 114b is a roller, 116 is a cooler, 1
20 is a lamination device, 122 is a roll loading device, 124 is an adhesive coating device, 126 is a dryer, 128 is an adhesion reducing material printing and coating device, 130 is a release sheet lamination device, 132a
, 132b is a roller, 134 is a take-up reroller, 140 is a lamination device, 142 is a roll loading device, 144 is a peeling device, 146 is an adhesion reducing material application device, 148 is a drying device,
150a and 150b are rollers, 152 is a superimposing device, 154 is a take-up reroller, 160 is a laminating device, 162
164 is a roll body loading device, 164 is an adhesion reducing material printing and coating device, 166 is an adhesive coating device, 168a is a main roller,
168b is a roller, 170 is a storage tank, 172 is a dryer, 1
74 is a lamination stacking device, 176 is a roll loading device, 17
8a, 178b are rollers, 179 is a take-up reroller, 18
0 is a label manufacturing device, 182 is a holding device, 184 is a printing device, 186 is a die cutter, 188a, 188b are rollers,
Reference numeral 190 indicates a scrap removal roller, and reference numeral 192 indicates a take-up reroller. Patent applicant Omatsu Chemical Industry Co., Ltd. Agent Patent attorney Oka 1) Kei Zen (and 1 other person) Figure 1 Figure 5!71 Figure 7 Figure 8

Claims (1)

[Scope of Claims] 1. The adhesive force of the adhesive layer at the adhesive strength-decreased layer portion is a, the force required to destroy the easily breakable layer is b, and the easily breakable layer is peeled off from the surface layer at the temporary adhesion layer. (a) Surface layer (b) forming an adhesive layer on one main surface of the easily breaking layer; (c) forming an adhesive layer on one main surface of the easily breaking layer; A method for manufacturing an easily destructible adhesive material, the method comprising: forming an adhesive force reducing layer on a part of the main surface to reduce the adhesive force of the adhesive. 2. The method for manufacturing an easily destructible adhesive material according to claim 1, wherein step (c) includes a step of temporarily attaching a release sheet to one principal surface of the adhesive layer. 3. In step (c), the adhesion reducing material forming the adhesion reducing layer is temporarily attached to a release sheet and superimposed on the adhesive layer, thereby transferring the adhesion reducing material to the surface of the adhesive layer. 3. A method for producing an easily destructible adhesive material according to claim 1 or 2, comprising the step of forming an adhesive force reducing layer on the surface of the adhesive layer. 4 The step (c) is to temporarily attach a release sheet to one main surface of the adhesive layer, then peel the release sheet again from the adhesive layer surface, and print and coat the adhesive force reducing material on the adhesive layer surface. forming an adhesion reducing layer by
A method for manufacturing an easily breakable adhesive material according to claim 1 or 2. 5. In step (a), a temporary bonding material forming a temporary bonding layer is printed and coated on the surface of a surface material forming a surface layer, and an easily breaking material forming an easily breaking layer is applied on the surface of the temporary bonding material. A method for producing an easily breakable adhesive material according to any one of claims 1 to 4, which includes a step of laminating. 6. The method according to any one of claims 1 to 5, wherein the step (a) includes the step of sequentially laminating a temporary adhesion layer and an easily broken layer on the surface of a surface material made of a synthetic resin film. Manufacturing method for easily destructible adhesive material. 7. The easily breakable adhesive according to claim 6, wherein step (a) includes the step of sequentially laminating a temporary adhesive layer and an easily breakable layer on the surface of a surface material made of a transparent synthetic resin film. The manufacturing method of the material. 8 The step (a) includes the step of printing and applying a temporary bonding material made of wax on the surface of the surface material forming the surface layer, and laminating an easily breakable layer on the surface of the temporary bonding material. A method for producing an easily breakable adhesive material according to any one of Items 1 to 7. 9 The above step (a) is a step of forming a temporary adhesive layer on the surface of the surface material forming the surface layer, and laminating an easily destructible material made of aluminum foil on the surface of the temporary adhesive layer to form an easily destructible layer. A method for producing an easily breakable adhesive material according to any one of claims 1 to 8, which comprises: 10 In step (a), a temporary adhesion layer is formed on the surface of the surface material forming the surface layer, and an easily destructible material made of an easily destructible synthetic resin film is laminated on the surface of the temporary adhesion layer. 9. A method for producing a breakable adhesive material according to any one of claims 1 to 8, which includes the step of forming a layer. 11. The easily destructible adhesive material according to any one of claims 1 to 10, wherein step (b) includes a step of applying a pressure-sensitive adhesive to form an adhesive layer. Manufacturing method. 12 The step (c) includes the step of printing and coating an adhesion reducing material made of varnish on the surface of the adhesive layer to form an adhesion reducing layer. A method for manufacturing the easily destructible adhesive material according to any one of the above. 13. The step (c) includes the step of forming an adhesion reducing layer by applying an adhesion reducing material containing synthetic resin as a main component to the surface of the adhesive layer. 12. A method for producing an easily destructible adhesive material according to any one of Item 11. 14 In the step (c), UV is applied to the surface of the adhesive layer.
14. The method for producing an easily destructible adhesive material according to claim 13, which includes the step of printing an adhesion reducing material made of ink such as mold ink to form an adhesion reducing layer. 15. Claims 1 to 11, wherein the step (c) includes a step of applying an adhesion reducing material made of powder to the surface of the adhesive layer to form an adhesion reducing layer.
A method for manufacturing the easily destructible adhesive described in any of the above. 16. Any one of claims 1 to 14, wherein the step (c) includes a step of pattern-coating an adhesion reducing material on the surface of the adhesive layer to form an adhesion reducing layer. The manufacturing method of the easily destructible adhesive material described in .