JPH057716B2 - - Google Patents

Description

[Detailed description of the invention]

(Industrial Application Field) The present invention relates to an easily breakable adhesive material whose surface layer is easily destroyed by hand, and in particular to a label for preventing repositioning that is attached to the opening of a plant card or container, for example. The present invention relates to an easily breakable adhesive material suitable for use in, etc. (Prior art) Conventionally, labels used as price tags and the like to prevent replacement have been made by making appropriate perforations or cuts in the surface base material, and then being peeled off at a store, etc., and attempted to be replaced with another price tag. In some cases, it is known that the material is separated or damaged at perforations or cuts, making it possible to tell at a glance that it has been attempted to be removed. On the other hand, the adhesive paper that is pasted to the opening of the container to indicate the opened status may vary depending on the material of the opening of the package and its surface treatment method.
For example, you can pick up a product displayed on a display shelf at a store, easily peel it off on the spot, and after getting foreign objects into the packaging, you can reapply it so that it is not obvious that it was removed. Therefore, you cannot tell whether the package has been opened or not just by looking at the sticker from the outside. Therefore, there is a risk that the contents of the package may be tampered with. For example, poisonous substances may be mixed in with sweets in a package. Therefore, recently, adhesive films that can be seen to be peeled off after being applied have come on the market. FIG. 13 is a sectional view showing such an adhesive film. The adhesive film 10 includes a film 12, and a silicon layer 14 is formed on a part of the back surface of the film 12. Then, metal is deposited on that surface to form a vapor deposited layer 16. Therefore, a part of this vapor deposited layer 16 is a silicon layer 14.
is not directly deposited on the film 12. Furthermore, the vapor deposition layer 16 and the release sheet 17 are temporarily attached with a pressure-sensitive adhesive layer 18. This adhesive film 10 is pasted by peeling off the release sheet 17 and pressing the exposed surface of the adhesive layer 18 against an opening (not shown) of the package.
Then, an adhesive film 10 is attached to the opening.
When the film 12 is peeled off, only the portion of the deposited layer 16' that was not directly deposited on the film 12 by the silicon layer 14 remains adhered to the opening with the adhesive layer 18, and the remaining portion and the peeled portion are separated. Predetermined characters such as "opened" will appear. Further, when the opening is opened, the remaining vapor deposited layer 16' stuck thereon is cut or torn, thereby making it possible to determine whether the opening has been opened. (Problems to be Solved by the Invention) However, in such an adhesive film 10, since the metal is deposited on the film 12 and the silicon layer 14, the film as the material to be deposited is limited to polyester or the like. In addition to the above, it is also necessary to satisfy various other conditions, which has the disadvantage of increasing costs. Furthermore, when the film 12 is peeled off, the surface of the adhesive layer 18 that remains and is exposed on the adhered part of the adhered material becomes sticky and attracts dust at the part where the film 12 is peeled off. However, there were also problems in terms of hygiene. Moreover, the adhesive force of the exposed adhesive layer 18 makes it possible to reattach the film 12, making it impossible to achieve the intended purpose. Therefore, the main object of the present invention is to provide an adhesive material that can be easily peeled off after application and does not require a vapor deposition process. (Means for Solving the Problems) The present invention includes an easily destructible first layer, a second layer laminated on the first layer, and an adhesive layer laminated on the second layer. the adhesive layer, and a release layer laminated between the first layer and the second layer, with a portion removed so that the first layer and the second layer adhere. In the adhesive material, the force required to peel the first layer from the second layer at the release layer part is a, and the force required to separate the first layer from the second layer at the part where the release layer is removed is It is an easily broken adhesive material that satisfies the following formula: a<b<c, where b is the force required for peeling and c is the adhesive force between the adhesive layer and the material to be adhered. (Function) The adhesive layer provides adhesive strength to the adhesive material to adhere to the surface of the material to be adhered or the sealed portion. The second layer retains its initial state when the first layer is removed. The peeling layer is divided into a part where the second layer and the first layer are peeled off and a part where the second layer and the first layer are not easily peeled off. The first layer protects the second layer from cutting or tearing and is easily destroyed by hand. (Effects of the Invention) According to the present invention, since the second layer is laminated on the first layer by coating or the like, it can be produced without performing vapor deposition as in the conventional method. Moreover, there are parts where the second layer and the first layer are temporarily attached through the release layer in a state where re-adhesion is impossible, and parts where the release layer is not present and the first layer and the second layer are If you try to manually peel off the adhesive formed into a predetermined shape from the opening of a package, etc., the part where the release layer is present will be separated from the first layer. is peeled off from the second layer, while it is not peeled off from the second layer in areas where there is no release layer, and the first layer is torn or torn and cannot be reattached, so it cannot be attached to the material to be attached. It can be seen that the adhesive material was peeled off. Additionally, once the second layer is cut or torn, it does not return to its original state, indicating that the second layer has been separated. Therefore, it can be seen at a glance that the adhesive material that has been applied to the material to be adhered has been peeled off, and an adhesive material that does not require the conventional vapor deposition process can be obtained. 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. (Embodiment) FIG. 1 is a sectional view showing an embodiment of the present invention. The adhesive material 10 of this example is used as a sticker, etc., and is wound into a roll as shown in FIG. It's dark. and,
A release layer 1 is placed on the surface of the surface layer 12 as the first layer.
4 are laminated, a resin layer 16 as a second layer is laminated on the surface of the release layer 14, and an adhesive layer 18 is further laminated on the surface of the resin layer 16.
A printed layer 24 is formed on the surface of the surface layer 12, and the surface layer 12 of the adhesive material 10A is bonded to the adhesive layer 18 of the adhesive material 10B that is rolled up.
A second peeling layer 26 is formed on the surface of the second peeling layer 26, and subsequent layers are formed in the same manner one after another. In addition, surface layer 1
A solid printing layer 23 such as silver printing is formed on the surface of the release layer 14 side of 2, and a printing layer 22 is also formed on the surface of the resin layer 16 on the adhesive layer 18 side. Therefore,
The printing layer 23 increases the hiding power and the surface layer 1
The printed layer 22 cannot be seen through from the second side, and the surface layer 12 can be sealed to stabilize the coating film of the release layer 14. However, the printing layers 22, 23, and 24 may not be formed. 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 only refer to single-fed type sheets, but also includes roll-up type (web) types.
Of course. The long strip-shaped adhesive material 10 is configured to have cuts 28 such as perforations at predetermined intervals so that it can be cut into predetermined strips. The surface layer 12 is formed to prevent the resin layer 16 from being cut or torn, and is designed to prevent the surface layer 12 from being peeled off first if the adhesive 10 is to be peeled off. It was formed in Although the resin layer 16 is temporarily attached to the surface layer 12 via the release layer 14, when the surface layer 12 is peeled off, the release layer 14 is not formed and the resin layer 16 is directly laminated. Use a material that can be torn while leaving the broken part on the resin layer 16 side. For example, paper, synthetic resin films such as brittle films made by mixing extender pigments (e.g., titanium white, calcium carbonate) with vinyl chloride and acrylic copolymer resin, or aluminum foil, etc., can be easily made by hand. Examples include sheets that are easily broken and can be easily torn. Furthermore, when the adhesive piece 10a obtained by cutting off the adhesive material 10 is bent and attached to the sealed part, the surface layer 12 tries to restore to its original state against the adhesive force of the resin layer 16. A relatively flexible material that does not peel off is preferable. The peeling layer 14 is formed so that the resin layer 16 and the surface layer 12 can be easily peeled off in a state where they cannot be reattached, and is made of, for example, silicone resin such as UV silicone, fluororesin, The resin layer 16 and the surface layer 1 are coated with a release agent such as wax.
It is formed between 2 and 2. In this embodiment, the release layer 14 is
The release layer 14 is not formed over the entire surface of one of the surfaces of the film 2, but as shown in FIG. The resin layer 16 is bonded to the surface layer 12 in the areas where the resin layer 16 is not bonded. In addition to the above example, the shape of the removed portion of the release layer 14 to which no release agent is applied may be, for example, the following shape as shown in FIG. In FIG. 2, dotted portions without the release layer 14 are regularly formed at predetermined intervals on the vertical groove line. In FIG. 2, parts from which the release layer 14 is removed are formed at each intersection of a honeycomb-like line, so that when manufacturing a label by die-cutting, the die-cutting can be performed at any position. is formed. The resin layer 16 is for sealing the opening of the package, for example, and is also for opening the package by being cut or torn when the seal is opened. This resin layer 16 is made of urethane resin, EVA resin, etc.
It is formed by coating the surface of the release layer 14 with a resin such as PVA, vinyl acetate, acrylic, vinyl chloride, or nylon. Note that another example of the resin layer 16 is a coating made of a synthetic resin in which metal powder is mixed with a synthetic resin and is formed so that it can be cut or torn by applying a relatively weak force. Examples include a resin layer. The adhesive layer 18 is for providing adhesive force to the adhesive piece 10a formed into a predetermined shape using the adhesive material 10, and is made of an adhesive such as a pressure-sensitive adhesive, for example. formed on the surface. In this adhesive material 10, the force required to peel off the surface layer 12 from the resin layer 16 at the release layer 14 portion is a, and the force required to peel off the surface layer 12 from the resin layer 16 at the release layer 14 portion is a, and the force required to peel off the surface layer 12 from the resin layer 16 at the release layer 14 portion is the first force
b is the force required to separate the layer from the second layer, c is the adhesive force between the adhesive layer 18 and the material to be adhered when it is adhered to the material to be adhered to, such as a package, and The force required to peel off the adhesive layer 18 of the adhesive material 10B from the second release layer 26 of the adhesive material 10A bonded thereto among the adjacent adhesive materials 10A and 10B is d, the structure is configured such that the force required to peel off each part satisfies the formula d<a<b<c. To use, first pull out the roll-shaped adhesive material 10, peel it off from the adjacent adhesive material 10A and pull out a predetermined length.
Then, it is cut into predetermined adhesive pieces 10a, and attached using an adhesive layer 18, for example, as a price tag, as shown in FIG. 11a, or attached to the opening of a package of sweets. Further, as shown in FIGS. 11b and 11c, when the opening of the lid of a can or bottle is to be completely sealed, the cut 28 such as a perforation is not necessary and it is preferable to use a series of cuts 28. In order to open the opening of the package to which the adhesive piece 10a consisting of the surface layer 12 and the resin layer 16 is attached, the attached adhesive piece 10a must be opened.
You must peel off a and open the sealed part. In this case, the surface layer 12 is strongly compared to the former part (14 parts of the peeling layer) because the surface layer 12 is weakly put on the resin layer 16 via the peeling layer 14 and the peeled layer 14 is not formed. On the other hand, since the resin layer 16 is strongly adhered to the opening of the package with the adhesive layer 18, if you try to peel off the adhesive piece 10a,
As shown in FIG. 12, of the surface layer, only the surface layer 12c where the peeling layer 14 is present can be peeled off, and the other surface layer 12b can be peeled off from the resin layer 12c.
6 remains attached to the sealed portion by the adhesive layer 18. Therefore, once the surface layer 12
If the surface layer 12c is peeled off, the surface layer 12c is torn off, and the characters such as "opened" on the printed layer 22 can be seen through the resin layer 16, and the surface layer 12c is peeled off again.
c cannot be reattached to the surface of the resin layer 16 and will not return to its original state, so it can be clearly seen that the package has been opened. In order to completely open the opening of the package, the remaining resin layer 16 must be cut, torn, or peeled from the opening. In addition, in order to open the sealed part, the surface layer 12
Even if the resin layer 16 is cut or torn at the same time as the package is peeled off, the opened state can be determined by looking at the state of the resin layer 16 in the same manner as described above. In this example, the adhesive piece 10a was used for a package of sweets, but it can also be used for a part to be sealed such as a package for medicine, an envelope, or a bag, or as a price tag displaying the price. Of course. 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. FIGS. 3 and 4 are illustrative views showing an example of an apparatus for manufacturing a laminate used in an embodiment of the present invention. This laminate 30 has a release layer 14 and a resin layer 16 laminated in that order on the surface layer 12. The apparatus 100 includes a holding roller 102 for holding the surface material 12a forming the strip-shaped surface layer 12 in a roll shape. One end of the surface material 12a held by the holding roller 102 is unwound and guided to the release agent coating device 104. The release agent application device 104 is for printing and applying a release agent 14a such as silicone resin or fluorine resin to one surface of the surface material 12a, and includes two rollers 104a and 104b. The lower part of the roller 104a is a pan 104c.
It is immersed in a release agent 14a stored in the water. Therefore, by rotating rollers 104a and 104b, the surface material 2 guided between them
A release agent 14a is printed and coated on the surface of 0a.
Note that as the release agent coating device 104, a coating device such as a gravure roll coater, a reverse roll coater, an air knife coater, etc. may be used.
Also, known printing machines such as offset printing machines and screen printing machines may be used. The release agent 14a is applied, for example, in strips at intervals, as shown in FIG.
Parts coated with the release agent 14a and parts not coated are formed alternately. Then, the surface material 12a to which the release agent 14a is printed and coated is heated, for example, by a dryer 10 including a heater.
6. In the dryer 106, the surface material 1
The release agent 14a printed and coated on 2a is dried to form a release layer 14. The surface material 12a on which the release layer 14 has been formed in this manner is guided to the winding device 108. Next, the roll-shaped surface material 12a wound on the winding device 108 is loaded onto the holding roller 102 of the release agent coating device 104 again. and,
In the same manner as described above, a release agent having a lighter release force than that of the release layer 14 is applied to the surface of the surface layer 12 opposite to the release layer 14 surface to form the second release layer 26. form. In this way, in this embodiment, the peeling force is made different on both surfaces of the surface material 12a. That is, the release layer 14 has a heavier release force than the second release layer 26, but this may be achieved by, for example, varying the release force by using different release agent components, or
Alternatively, make a difference by changing the amount of release agent applied. Then, the second peeling layer 26 is further formed, and the rolled surface material 12a is loaded into another resin 16a laminating apparatus 110 shown in FIG. 4. Laminating device 110 includes two rollers 112 and 114. The lower part of the roller 112 is immersed in a resin 16a such as urethane resin or EVA resin stored in a pan 116. Therefore, by rotating the rollers 112 and 114, the resin 16a is printed and coated on the surface of the release layer 14 of the surface material 12a guided between them. Then, the surface material 1 coated with the resin 16a
2a is further led to a dryer 120, where it is dried and solidified. As a result, the resin 16a is coated on the surface of the release layer 14 on the surface of the surface layer 12, and a laminate 30 in which the resin layer 16 is formed is formed. This laminate 30 is then sent to the next printing device 130. The printing device 130 is comprised of a known printing machine, such as an offset printing machine, and is provided on the transport path of the stack 30. The printing device 130 forms a printed layer 22 on the surface of the resin layer 16 with, for example, characters such as "opened" printed thereon. Also, for example, a predetermined line such as "opened" may be printed on the surface of the material to be adhered, such as a package, and when the surface layer 12 is peeled off, the lines formed on the material to be adhered may be printed through the resin layer 16. If the printed lines can be seen through, the printed layer 2
2 may not be formed. Next, the laminate 30 is guided to a score forming device 136 that forms cuts 28, such as perforations for cutting. The cuts 28 are formed to divide a large number of identical arrays, and are intended to facilitate dividing the adhesive material 10 one by one. The cut forming device 136 has a cutting blade having a shape corresponding to the shape of the cut 28. As the score forming device 136, a device including a cutting blade roller or the like may be used. However, in the case of an adhesive material that does not have the cut 28, the cut 2 is formed by the cut forming device 136.
Of course, it is not necessary to form 8. The laminate 30 on which the printed layer 22 has been formed in this way is wound up into a roll shape and held by a take-up roller 140. In FIG. 5, using the laminate 30 shown in FIG.
It is an illustrative view showing an example of a device for further laminating an adhesive layer 18. Apparatus 150 includes a coating device 152 . The coating device 152 is for coating the adhesive 18a on the surface of the resin layer 16 of the laminate 30, and includes a main roller 154 and a main roller 154.
It includes a roller 156 provided opposite to. The main roller 154 has a pan 158 at its lower part.
The main roller 154 applies the adhesive 18a to the surface of the resin layer 16 of the laminate 30, which is immersed in the adhesive 18a stored in the resin layer 18a and is sandwiched between the main roller 154 and the roller 156. Then, the laminate 30 printed with the adhesive 18a is led to a dryer 122 including, for example, a heater. In the dryer 122, the adhesive 18a printed and coated on the laminate 30 is dried to form an adhesive layer 18.
is formed as. Then, the adhesive material 10 formed by laminating the adhesive layer 18 and the laminate 30 is guided to a take-up roller 160. In order to use the adhesive material 10 manufactured in this manner to form a label, the laminate 30 may be loaded into a label manufacturing apparatus including a printing apparatus or the like. In the embodiment described above, before forming the second release layer 26, a printed layer 24 is formed by printing appropriate lines such as "product name" on the surface of the surface layer 12. However, these printed layers 22, 23,
24 may be formed alone or as a combination of two or more layers, or may not be formed at all. Note that the solid printing layer 23 is the peeling layer 1 of the surface layer 12.
When forming on the surface of side 4, it is of course necessary to print before forming the release layer 14. Here, more specific details will be given as follows. (1) As the first layer, a brittle film manufactured by Nippon Carbide Industries Co., Ltd. whose main component is a copolymer resin of vinyl chloride and acrylic with a thickness of about 5 to 100 μm is used, and as a release agent to form the release layer 14, Toray Industries Co., Ltd. After coating the entire surface of the high-quality paper in a polka dot pattern with a hardening agent using the company's silicone resin, leaving the uncoated areas,
A release layer is formed by baking with a dryer. Then, again, as a release agent for forming the second release layer 26, a silicone resin manufactured by Toray Industries, Inc. whose release force is lighter than the silicone resin (coating amount: solid content) is used again.
0.3 to 2 g/m ² ), coated with a hardening agent, and then baked with a dryer to form the second release layer 26. Next, this release layer 1
4 to form a second layer on top of Table 1 below.
A hot melt mainly composed of EVA resin is coated to a thickness of approximately 5 to 50 μm.
At this time, the force a required to peel off the EVA resin layer from the release layer was 100 g, and the force b required to peel off the EVA resin from the brittle film in the area where the release layer 14 was not formed was 500 g. The thus-prepared laminate of the first and second layers was coated with an acrylic adhesive (BPS-5127, manufactured by Toyo Ink) to a dry film thickness of 5 to 50 μm. Thereafter, the laminate was rolled up into a roll. At this time, the force d required to peel off the adhesive material 10 from the rolled-up inner adhesive material 10 in the adhesive layer was 10 g. The thus constructed adhesive material was made into a label and pasted onto a material to be pasted (paper box, plastic, glass bottle, etc.). At this time, the adhesive force b to the adhered material was 1,000 g. When I tried to forcefully peel off the pasted label from the material to which it was pasted, I found that the brittle film of the first layer was peeled off from the peeling layer 1.
It was peeled off at four locations, and the EVA resin layer remained on the surface of the EVA resin layer where the release layer 14 was not formed and was torn.

【table】

[Table] In addition, urethane resin manufactured by Takeda Pharmaceutical Co., Ltd.
Similar results were obtained when coating was carried out as a layer, and the other conditions were the same as in the previous example. (2) Using coated paper with a thickness of about 70 μm as the first layer, wax was applied as a release agent to form a release layer and dried, leaving a striped area where the release layer was missing. Next, a second layer of urethane resin or EVA is formed on top of this wax.
Coat with resin or the like to a thickness of approximately 5 to 50 μm. At this time, urethane resin or EVA
The force a required to peel the resin from the wax surface is
The force b required to peel off the coated paper from the resin layer at the portion where the release agent layer was not formed was 500 g. A laminate of the coated paper and the second layer created in this way is coated with an adhesive manufactured by Toyo Ink Co., Ltd. to a dry film thickness of 5 to 500 ml.
It was coated to a thickness of 50μ. Thereafter, the laminate was rolled up into a roll, and the force d required to peel off the adhesive portion from the second release layer was 20 g. The thus constructed adhesive material was made into a label and pasted onto a material to be pasted (paper box, plastic, glass bottle, etc.). At this time, the adhesive force c to the adhered material was 1,000 g. When I tried to forcefully peel off the pasted label from the material to which it was pasted, the coated paper of the first layer was peeled off at the release layer 14 area, and the area where the release layer 14 was not formed was removed. In this case, the coated paper remained on the surface of the resin layer and was torn. FIG. 7 is a sectional view showing another embodiment of the invention. In particular, in the adhesive material 10 of this embodiment, unlike the embodiment shown in FIG. 1, the resin layer 16 forming the second layer was not formed by coating the release layer 14, but instead The adhesive layer 16b formed on the surface of the adhesive layer 16 is used to superimpose and adhere to the release layer 14. The resin layer 16 is formed with a film made of a resin such as polyethylene, polypropylene, polystyrene, urethane, etc., and the adhesive layer 16b is formed with an adhesive 16b' having a weaker adhesive force than the adhesive layer 18. It is. FIG. 6 shows the surface layer 12 shown in FIG. 7, using the laminated material 32 of the surface layer 12 shown in FIGS.
Laminate 30 consisting of release layer 14 and resin layer 16
1 is an illustrative view showing an example of a device for manufacturing. In this apparatus, unlike the apparatus shown in FIG. 4, a film 16' is laminated and laminated on the surface of the release layer 14 on the surface of the surface layer 12, instead of the lamination apparatus 110 that coats the resin 16a. A device 110' is provided. The laminating device 110' applies the adhesive 16b' to the laminated body 3.
a device 117 for coating the surface of the release layer 14 of 0;
It includes a device 118 for loading a roll of film 16'. The adhesive application device 117 is
Pan 11 for storing roller 112' and adhesive 16b'
After applying adhesive 16b' to the surface of the peeling layer 14 of the laminated material 32 drawn out and guided from the supply device, as the roller 112' rotates, the adhesive 16b' is applied to the surface of the peeling layer 14 of the laminated material 32 including the adhesive 6', and is then separately applied by the device 118 for loading the rolled body. The guided film 16' is overlapped and adhered to the surface of the adhesive 16b'. The laminate 30 in which the film 16' is thus laminated on the surface of the release layer 14 of the laminate 32 via the adhesive layer 16b is guided to the adhesive device 119. As the adhesive device, PVA type,
When using adhesives containing water-soluble resins such as vinyl acetate or acrylic, or solvent-based adhesives made of salt vinyl acetate, urethane, acrylic, etc., use a dryer.
When using rubber-based or EVA-based hot melt adhesives, use a "cooler". In this way, the films 16' are superimposed and the second
A laminate 30 in which a resin layer 16 is formed.
is then guided to a score forming device 136 that forms perforations for cutting and the like. The cuts 28 are formed to divide a large number of identical arrays, making it easy to divide the adhesive material 10 one by one. Laminated body 30 with cuts 28 formed in this way
is guided to the printing device 130, and the printing device 13 prints an appropriate line such as “opened” on the surface of the resin layer 16.
0 and is wound up on the winding roller 140. Then, the winding roller 14
The laminated body 30 which has been wound up in a layered manner is loaded into, for example, an adhesive 18a coating device 158 shown in FIG. An adhesive layer 18 is formed. Note that the adhesive 18a forming the adhesive layer 18 at this time may be the same pressure-sensitive adhesive as in the above embodiment, but a sheet-like adhesive as shown in FIG. 8 may be used. When forming the material 10, pressure-sensitive adhesives cause inadvertent adhesion, so a rewetting adhesive that immediately dissolves when wetted with water and exhibits strong adhesive strength may be applied. As this rewetting adhesive, for example, a starch adhesive such as water-soluble polyethylene, POVAL (PYA), or starch glue is used. Note that in the case of such a single-leaf type (sheet-like) adhesive material 10, unlike the adhesive material 10 as shown in FIG. The printed layer 24a may be formed by appropriately printing lines such as "product name" and "price" on the surface of the surface layer 12, as shown in FIG. 8, without forming them on the surface. In addition, as shown in FIG.
8b, the wide sheet-like adhesive material 10 is divided into predetermined sizes, and cut at the cuts 28a and 28b to obtain adhesive pieces 10a of appropriate size.
may be formed. Further, as the adhesive 18a forming the adhesive layer 18, a heat-sensitive type adhesive may be used, which has no tackiness on the surface at room temperature, but becomes activated and develops tackiness when heated. As a heat-sensitive adhesive,
For example, an adhesive may be used that is activated by heating, for example, has adhesive properties mainly made of a hot-melt resin such as polyethylene, and is bonded when cooled. When applying such an adhesive to the surface of the resin layer 16, which is the second layer of the laminate 30, for example, a coating device as shown in FIG. 9 that applies the adhesive while heating it to an appropriate temperature is used. The laminate 30 on which the adhesive 18a has been printed and applied is led to a dryer 124 including a device that blows out cold air, and the adhesive 18a is dried to form the adhesive layer 18. .

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of the present invention. FIG. 2 is a plan view showing a state in which a release layer is formed. FIGS. 3 and 4 are illustrative views showing an example of an apparatus for manufacturing a laminate used in an embodiment of the present invention. FIG. 5 shows an example in which the laminate 30 shown in FIG.
FIG. FIG. 6 is an illustrative view showing an example of an apparatus for manufacturing the adhesive material 10 shown in FIG. 7 using the laminate 32 shown in FIG. 4. FIG. 7 is a sectional view showing another embodiment of the invention. FIG. 8 is a perspective view showing another embodiment of the invention.
FIG. 9 is an illustrative view showing another apparatus for laminating the adhesive layer 18. FIG. 10 is a perspective view showing an embodiment of the present invention. Figure 11 a, b,
c is a perspective view showing a method of using the adhesive material according to the present invention. FIG. 12 shows the first example of the embodiment shown in FIG.
FIG. 3 is a cross-sectional view showing a state in which the layer is destroyed. 13th
The figure is a sectional view showing a conventional example. In the figure, 10 is an adhesive material, 10a is an adhesive piece,
12 is a surface layer, 14 is a release layer, 14a is a release agent,
16 is a resin layer, 16' is a film, 18 is an adhesive layer, 18a is an adhesive, 22 is a printing layer, 23 is a printing layer, 24 is a printing layer, 26 is a second peeling layer, 30 is a laminate, 102 104 is a holding roller, 104 is a release agent coating device, 104a and 104b are rollers, and 104c
106 is a dryer, 108 is a winding device, 110, 110' is a laminating device, 120 is a dryer, 122 is a drying device, 130, 132 is a printing device, 136 is a score forming device, 140 is a winding roller, 150 is a device, 152 is a coating device,
154 is a main roller, 156 is a roller, 158
160 is a pan, 160 is a take-up roller, 162 is a holding roller, 164 and 166 are rollers, and 168 is a take-up roller.

Claims (1)

[Scope of Claims] 1. an easily breakable first layer, a second layer laminated on the first layer, an adhesive layer laminated on the second layer, and the first layer. An adhesive material comprising a release layer laminated between a layer and a second layer with a part removed so that the first layer and the second layer are bonded, the adhesive material comprising: Let a be the force required to peel the first layer from the second layer at the layer site, and let a be the force required to peel the first layer from the second layer at the site where the peeling layer is missing. An easily destructible adhesive material that satisfies the following formula a<b<c, where b is the adhesive force of the adhesive layer to the adhered material and c is the adhesive force of the adhesive layer to the adhered material. 2. The easily destructible adhesive material according to claim 1, wherein the adhesive material includes one rolled up into a roll. 3. The first layer includes a second release layer formed on a surface opposite to the surface on which the release layer is formed, and the first layer is separated from the second layer by the release layer. Let a be the force required to peel off the first layer from the second layer at the part where the release layer is missing, b be the force required to peel off the first layer from the second layer, and c be the adhesive force between the adhesive layer and the adhered material. When the force required to peel off the adhesive layer and the second release layer of the first layer joined when rolled into a roll is d, the following formula d<a<b<c The easily destructible adhesive material according to claim 2, which satisfies the following. 4. The easily destructible adhesive material according to claim 1, wherein the adhesive material is in the form of a sheet. 5. The easily destructible adhesive material according to any one of claims 1 to 4, wherein the first layer includes paper. 6. The breakable adhesive material according to any one of claims 1 to 4, wherein the first layer includes a breakable synthetic resin film. 7. The easily destructible adhesive material according to claim 6, wherein the first layer includes a film whose main component is a copolymer resin of vinyl chloride and acrylic. 8. The easily destructible adhesive material according to any one of claims 1 to 7, wherein the second layer includes a resin layer coated with a synthetic resin. 9. The easily destructible adhesive material according to claim 8, wherein the second layer includes a resin layer coated with urethane resin. 10. The easily destructible adhesive material according to claim 8, wherein the second layer includes a resin layer coated with EVA resin. 11. The easily destructible adhesive material according to any one of claims 1 to 7, wherein the second layer includes a synthetic resin layer formed by overlapping synthetic resin films. 12. The easily destructible adhesive material according to any one of claims 1 to 11, wherein the release layer includes a layer coated with silicone resin. 13. The release layer includes a layer coated with a soft resin.
The easily destructible adhesive material according to any one of Item 1. 14. The easily destructible adhesive material according to any one of claims 1 to 11, wherein the release layer includes a layer coated with wax. 15. The easily destructible adhesive material according to any one of claims 1 to 14, wherein the portion lacking the release layer is formed in a linear shape. 16. The easily destructible adhesive material according to any one of claims 1 to 14, wherein the portion where the release layer is removed is formed in a dot shape. 17. The easily destructible adhesive material according to any one of claims 1 to 14, wherein the region where the release layer is removed is formed in a geometric pattern. 18. The easily destructible adhesive material according to any one of claims 1 to 17, wherein the adhesive layer includes an adhesive layer coated with a pressure-sensitive adhesive. 19. The easily destructible adhesive material according to any one of claims 1 to 17, wherein the adhesive layer includes an adhesive layer formed by applying a rewet adhesive. 20. The easily destructible adhesive material according to any one of claims 1 to 17, wherein the adhesive layer includes an adhesive layer coated with a heat-sensitive adhesive. 21. Claim 20, wherein the heat-sensitive adhesive layer includes an adhesive layer mainly composed of a heat-melting resin.
Easily destructible adhesive material as described in section. 22. Claims 1 to 21, wherein the first layer includes a printing layer formed on its surface.
The easily destructible adhesive material described in any of the above. 23. Claim 22, wherein the first layer includes a solid printing layer formed on the surface on the second layer side.
Easily destructible adhesive material as described in section. 24. Claims 1 to 23, wherein the second layer includes a printing layer formed on its surface.
The easily destructible adhesive material described in any of the above.