JPH0430619Y2 - - Google Patents

Description

[Detailed explanation of the idea]

(Industrial field of application) This invention is suitable for preventing replacement by sticking to the opening of a container, for example, because when the surface layer is peeled off by hand, the easily broken layer underneath is destroyed. ,
Regarding sealing materials. (Prior Art) Conventional sealing materials that are pasted to the opening of a container to indicate the unopened state may be affected 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 already been opened just by looking at the sealing material from the outside.
Therefore, there is a risk that the contents of the package may be tampered with. for example,
It is common for sweets in packaged cages to be mixed with poisonous substances. Therefore, recently, adhesive labels that can be seen to be peeled off after being pasted have become available on the market, and are disclosed in Utility Model Application Publication No. 1077/1983. 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 part of the deposited film that was not directly deposited on the film base by the release agent coating is adhered to the opening. remain as is. Furthermore, when the opening is opened, the remaining vapor deposited film stuck thereon is cut and torn, thereby making it possible to determine whether the opening has been opened. (Problem that the invention aims to solve) However, with such adhesive labels, when the film is peeled off, part of the vapor deposited film is difficult to remain on the adhesive coated surface, and it is difficult for some of the vaporized film to remain on the adhesive layer when the film is peeled off. It is not easy to form characters or the like with the remaining vapor deposited film after it has been peeled off. Furthermore, when the film base material is peeled off, a portion of the adhesive coating remains on the applied part of the adhesive, and the surface of the exposed adhesive coating becomes sticky and collects dust. It also had problems in terms of hygiene. Therefore, the main purpose of this invention is to provide a sealant that can be recognized as being peeled off after being applied, and that no adhesive appears on the peeled surface and does not become sticky. (Means for Solving the Problems) This invention consists of a surface material, an easily breakable layer polymerized and bonded to one main surface of the surface material, and a breakable layer formed on the surface of the easily breakable layer, which is easily bonded to the surface material. a temporary adhesion layer for adhering the destructible layer; a first peeling layer formed on one main surface of the surface material to facilitate peeling between the surface material and the destructible layer; A second release layer formed on a part of the main surface, a coating layer formed on the second release layer side main surface of the easily broken layer, and an adhesive formed on the main surface of the coating layer. When the force is a and the adhesive force between the second release layer and the coating layer is b,
It is a sealing material that satisfies the following formula: a>b. (Function) The adhesive strength between the first release layer and the easily broken layer is
The adhesion force between the second release layer and the covering layer is greater than that of the second release layer, and the second release layer is formed with a portion removed from the main surface of the easily broken layer, so that the sealed layer is The adhesive strength of each part of the sealant stuck to the material is different between the part where the second peeling layer is formed and the part where it is not, and when the surface material on the surface is peeled off, The easily destructible layer is torn at the boundary between the part where the release layer is formed and the part where it is missing, and the easily destructible layer and the coating layer in the part where the second release layer is removed remain on the surface of the adhered material, etc. The part peels off from the coating layer. (Effect of the invention) According to this invention, the adhesive force between the first release layer and the easily broken layer is greater than the adhesive force between the second release layer and the coating layer, and the second release layer is formed on the main surface of the easily destructible layer with a part removed, so the adhesive force between the covering layer and the easily destructible layer is different between the part where the second peeling layer is formed and the part where the second peeling layer is removed. , the adhesive strength is different, and when the surface material is peeled off,
Only the portion of the easily broken layer where the second peeling layer is formed is peeled off from the covering layer. Therefore, it can be seen that the easily broken layer has been separated because it is torn and separated from the other parts and cannot be reattached to the original state. Therefore, it can be seen at a glance that the adhesive sealing material has been peeled off, and it can also be easily determined whether poisonous substances or the like have been mixed into the package. In addition, since a coating layer is formed over the entire surface of the adhesive layer, the surface of the adhesive layer will not be exposed and sticky after the surface material is peeled off, unlike conventional methods. Furthermore, it becomes impossible to reattach the surface material due to the adhesive force of the exposed adhesive layer. The above-mentioned objects, other objects, features and advantages of the present invention will become clearer from the following detailed description of embodiments with reference to the drawings. (Example) FIG. 1 is a sectional view of a sealing material that is an example of this invention. The sealing material 10 of this example is
It is used as a seal or the like, and as shown in FIG. 10, the sealing material 10B is wound on top of the sealing material 10A, so that it is wound into a roll. This sealing material 10 includes an adhesive layer 14, a coating layer 1
6. Second release layer 18, easily broken layer 20, temporary adhesive layer 2
1. The first peeling layer 22 and the surface material 24 are sequentially laminated. A third peeling layer 12 is formed on the surface of the surface material 24, which is bonded to the adhesive layer 14 of the sealing material 10B that is rolled up. Furthermore, on the surface of the surface material 24,
A printed layer 26 is formed. The following structures are sequentially formed in the same manner. The surface material 24 is formed to prevent the easily destructible layer 20 from being cut or torn, and the surface material 24 is formed to prevent the easily destructible layer 20 from being cut or torn.
is being temporarily worn. Examples of the surface material 24 include polyester or nylon film, which is relatively stiff and does not shrink easily due to heat, or paper or synthetic paper. In order to be able to clearly see the traces of peeling from the surface side of the surface material 24 when the sealant 10 is peeled off, it is better to select a transparent or translucent material. If you do that,
It is easy to see that a part of the easily broken layer 20 remains on the adhered material A, and a part is peeled off from the adhered material A and sticks to the surface material 24, which is convenient. The first peeling layer 22 includes a surface material 24 and an easily broken layer 2.
Temporarily adhere the surface material 2 and 2 so that it cannot be reattached.
4 and the easy-to-break layer 20. For example, it is made of a release agent layer coated with a release agent such as silicone resin, fluororesin, paraffin, wax, etc. layer 20. The easily broken layer 20 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 this adhesive material 10 is bent and attached to a bent part, this temporary adhesive layer 2
It is preferable to use a relatively flexible material that does not peel off when the adhesive base material 24 attempts to restore its original state against the adhesive force of No. 1. The temporary adhesive layer 21 is a layer that adheres the easily breakable layer 20 and the adhesive base material 24, and this temporary adhesive layer 21 is made of a two-component reactive polymer resin, such as urethane resin, etc.
It is formed by coating the surface of the first release layer 22 with a resin such as EVA resin, PVA, salt vinyl acetate, or acrylic. Other examples of the temporary adhesion layer 21 include an adhesive layer coated with a thermosetting adhesive such as polyester or polyurethane. The second release layer 18 is formed by coating a part of the surface of the easily broken layer 20 with a release agent such as silicone resin, fluorine resin, or wax by printing a pattern. For example, by pattern printing and coating lines such as letters or pictures such as "opened", the surface material 24 is peeled off as described later,
When the easily destructible layer 20 is destroyed, lines such as the above-mentioned characters "opened" appear,
It is possible to form a sealing material 10 that more closely matches the intended use. The covering layer 16 is a layer that covers the adhesive layer 14 in order to prevent the adhesive layer 14 from being exposed to the surface and becoming sticky when the surface material 24 is peeled off as described later. This coating layer 16 is made of a resin such as urethane resin, EVA resin, PVA, salt vinyl acetate, etc., nitrocellulose type, polyamide type, acrylic type, etc., and the second peeling layer 18 of the easily broken layer 20 is formed thereon. It is formed by coating the surface. The adhesive layer 14 is for giving adhesive strength to the sealant 10 to adhere to the adhered material A, and is made of, for example, an adhesive layer coated with a pressure-sensitive adhesive. formed on the surface. This sealing material 10 has an adhesive force of a between the first release layer 22 and the easily broken layer 20, and a second release layer 18.
The adhesion force between the adhesion layer 14 and the coating layer 16 is b, the adhesion force between the adhesion layer 14 and the adhesion layer 14 is d, and the adhesion between the adjacent sealants 10A and 10 is
Of B, the force required to peel off the adhesive layer 14 of the sealant 10B from the third peeling layer 12 of the sealant 10A bonded thereto is c, and the easily breakable layer 2
When e is the force required to destroy 0, the structure is configured to satisfy the following formula c<b<e<a<d. To use this sealant 10, first pull out the roll-shaped sealant 10B, pull it out to a predetermined length while peeling it off from the adjacent sealant 10A, and then attach it to the predetermined sealant piece 10a at the cut 28 such as a perforation. It is cut off and attached to the opening of a candy package or can using the adhesive layer 14, for example, as shown in FIGS. 9a, b, and c. In this way, in order to open the opening of the package to which the sealant 10 is attached, the attached sealant 10 must be peeled off and the sealed portion must be opened. In this case, the easily broken layer 20 is the first release layer 22
The easily broken layer 20 is temporarily attached to the surface material 24 through the
is strongly adhered to the covering layer 16, and the second release layer 1
In the region where 8 is formed, the covering layer 16
The bond is weaker than the part that is directly bonded. Therefore, as shown in FIG. 2, when the surface material 24 is peeled off, the easily broken layer 20 in the second release layer 18 portion and the easily broken layer in the portion directly adhered to the covering layer 16 are removed. At the boundary with 20,
The easily destructible layer 20 is torn, and at the same time, the coating layer 16 is peeled off from the main surface of the second peeling layer 18, and a part of the easily destructible layer 20 (the part where the second peeling layer 18 is formed) is separated. While remaining adhered to the surface material 24,
It will be peeled off from the adhered material A. Then, in the easily broken layer 20, the portion where the second release layer 18 is not formed remains stuck to the adhered material A as it is. Therefore, once the surface material 24 is peeled off, the easily broken layer 20 becomes the second layer.
The surface material 24 is broken at the boundary between the part where the peeling layer 18 is formed and the part where it is not formed, and the surface material 24 cannot be reattached to the surface of the covering layer 16, and the original state is restored. Since it cannot be restored, it is obvious that the package has been opened. In this specification, sheets, films, and their equivalents are collectively referred to as "sheets" or "films," indicating the most suitable one in each case. Also "sheet"
Of course, when we say this, we are referring not only to the single-wafer type, but also to the roll-up type (web) type. Hereinafter, in order to further clarify the embodiments of this invention, further explanation will be given based on an example of a method for manufacturing a sealing material according to this invention. FIGS. 3 to 5 are illustrative views showing an example of an apparatus for manufacturing a laminate 30 used in an embodiment of this invention. This laminate 30 has a first release layer 22 , an easily broken layer 20 , a second release layer 1 on the main surface of the surface material 24 .
8 and the covering layer 16 are laminated in that order, and the third peeling layer 12 is laminated on the main surface opposite to the surface material 24. The apparatus 100 includes a holding roller 102 for holding the surface material 24a forming the strip-shaped surface material 24 in a roll shape. One end of the surface material 24a held by the holding roller 102 is unraveled,
It is guided to a release material coating device 104. The release agent application device 104 is for printing and applying a release agent 22a such as silicone resin, fluorine resin, paraffin, wax, etc. on one surface of the surface material 24a, and includes two rollers 106a and 106b. , and a storage tank 108, and the release agent 22a is applied while rotating the rollers 106a and 106b. Note that the release agent coating device 104
As a coating device, a coating device such as a gravure roll coater or a reverse roll coater may be used, or a known printing machine such as an offset printing machine or a screen printing machine may be used. This release agent 22a is then led to a dryer 109 that includes a heater and is dried. In the dryer 110, the release agent 22a printed and coated on the surface material 24a is dried to form the first release layer 22. The surface material 24a on which the first peeling layer 22 is formed in this manner is guided to the winding device 112. Next, in order to laminate the third release layer 12 again, the device is loaded into a device similar to the above-described release agent application device 104, and is applied in the same manner as described above. The third release layer 12 is formed by printing and applying a release agent. As the release agent for forming the third release layer 12, a release agent containing silicone resin, fluororesin, or the like as a main component is selected. The surface material 24a on which the first peeling layer 22 and the third peeling layer 12 have been formed in this manner is then sent to the laminating device 120 where the easily broken layer 20 is formed. This lamination device 120 includes a device for loading a rolled body in which the adhesive material 24a is rolled up. The aluminum foil 20a, which is an easily breakable material forming the easily breakable layer 20, pulled out from this rolled up body is transferred to a coating device 122, which includes two rollers and a pan for storing the resin or adhesive 21a forming the temporary adhesive layer 21. After applying the resin or adhesive 21a to the surface of the aluminum foil 20a as the two rollers rotate, the adhesive material 21a is guided between the two rollers 124 and 126, and then the first adhesive material 14a, which is separately guided, is applied to the surface of the aluminum foil 20a. Aluminum foil 20a is overlaid and adhered to the surface of peeling layer 22 using adhesive 21a on the surface thereof.
Then, it is guided to the bonding device 128. When using the adhesive 21a as the adhesive 21a, an adhesive containing a water-soluble resin such as PVA, vinyl acetate, or acrylic, or a solvent-based adhesive such as salt vinyl acetate, urethane, or acrylic is used. using rubber-based,
When using EVA-based hot melt adhesive,
Use a "cooler". The laminating device 220 shown in FIG. 8 is for polymerizing and adhering the easily destructible material 20a forming the easily destructible layer 20 to the surface of the first peeling layer 22 formed on the surface of the surface agent 24, Main roller 222a
and a roller 222b provided opposite to the main roller 222a. An easily broken material 20a made of a brittle film is fed between the main roller 222a and the roller 222b. A temporary adhesive layer 21 is formed on the back surface of the easily broken material 20a, and a temporary adhesive layer 21 is formed by applying a pressure sensitive adhesive or the like in advance. Release material 2 to prevent it from adhering to the surface.
1b is temporarily attached. And this easily destructible material 2
0a, the temporary adhesion layer 21, and the release material 21b are rolled up, and the laminate pulled out from this rolled up material is passed through the release material 2 before being sent to the main roller 222a and the roller 222b.
Only 1b is peeled off from the temporary adhesive layer 21 to expose the temporary adhesive layer 21, and in that state is sent to the main roller 222a and roller 222b to form the surface material 24.
It is laminated and adhered to the surface of the first release layer 22 of a.
In this way, the easily broken layer 20 is formed, and is then wound up on the winding roller 228. The rolled body of the surface material 24 on which the easily broken layer 20 is formed is sent to a laminating device 140 shown in FIG. 5. The laminating apparatus 140 shown in FIG.
It includes a device 142 for loading 4 rolls. The surface material 24 pulled out from the roll body loading device 142 that loads this roll body is transferred to the next release agent coating device 144.
guided by. The release agent coating device 144 coats one surface of the easily broken layer 20 with silicone resin, for example.
It is for printing and applying a release agent 18a similar to fluororesin, paraffin, and wax, and includes two rollers 146a and 146b and a storage tank 148, and the release agent 18a is applied while rotating the rollers 146a and 146b. This release agent 18a
is then led to a dryer 149 that includes a heater and is dried. Note that the release agent coating device 1
As 44, a coating device such as a gravure roll coater or a reverse roll coater may be used, or a known printing machine such as an offset printing machine or a screen printing machine may be used. Release agent 18a forming this second release layer 18
is partially printed and applied on the surface of the easily broken layer 20, and is formed by pattern printing lines such as "opened", for example. The surface material 24 coated with the release agent 18a is sent to a lamination device 150 that laminates the coating material 16a that forms the next coating layer 16. This coating material laminating device 150 includes a roller 152 that applies a coating material 16a such as EVA resin. In this laminating apparatus 150, the coating material 16a is coated on the surface of the easily breakable layer 20 coated with the release agent 18a forming the second release layer 18 while being pressed by the roller 154, and the coating material 16a is applied while being pressed by the roller 154. Cooler 1 installed next in state
56. The cooler 156 is for cooling the covering material 16a. In the cooler 156, the coating material 16a is cooled and solidified to form the coating layer 16,
A laminate 30 is formed on the main surface of the surface material 24 by sequentially laminating the first release layer 22, the easily broken layer 20, the second release layer 18, and the covering layer 16. This laminate 30 is wound up on a winding roller 158. The laminate 30 thus formed is then loaded into a laminator 160 shown in FIG. 6. FIG. 6 is an illustrative view showing a lamination 160 in which the adhesive layer 14 is laminated on the laminate 30. This stacking device 160 includes a roll loading device 162 for loading rolls of the laminate 30. The laminate 30 pulled out from the roll loading device 162 of the laminate 30 is led to an adhesive coating device 166, which is a coating device for the adhesive 14, with the surface of the coating layer 16 being the bottom surface in FIG. In this adhesive application device 166, an adhesive such as a pressure-sensitive adhesive is printed and applied. This adhesive application device 166 is for applying the adhesive 14a to the surface of the coating layer 16 of the laminate 30, and includes a main roller 168a and a roller 168b provided opposite to the main roller 168a. include. And the main roller 168a
The lower part of the adhesive 1 is stored in the storage layer 170.
The adhesive 14a is printed and applied by the main roller 168a onto the surface of the coating layer 16 of the laminate 30, which is immersed in the adhesive 4a and sandwiched between the main roller 168a and the roller 168b. Then, the laminate 30 printed with the adhesive 14a is led to a dryer 172 including, for example, a heater. In the dryer 172, the adhesive 14a printed and applied to the laminate 30 is dried to form the adhesive layer 14, and the adhesive layer 14 and the laminate 30 are dried.
The laminate is taken up on a take-up roller 174. In order to use the adhesive produced in this manner to form sealing pieces, it is sufficient to load the adhesive into a device for manufacturing sealing pieces, including a printing device for this laminate. FIG. 7 is an illustrative view showing an example of an apparatus for manufacturing sealing pieces. The sealing piece manufacturing apparatus 180 includes a holding device 182 that loads a roll of a laminate 30 in which a release sheet 12 is laminated on the surface of an 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. Then, the printing device 184 forms a printing layer 26 on the surface of the surface material 24, on which lines such as "product name" are printed, for example. The laminate on which the printed layer 26 has been formed in this manner is guided to a die cutter 186. The die cutter 186 includes a so-called die cutter having a cutting blade, and uses the die cutter to cut the surface material 24, the first peeling layer 22,
Cuts of appropriate shapes are made in the easily broken layer 20, the covering layer 16, and the adhesive layer 14. Note that the printing layer 26
may be formed in advance on the surface of the surface material 24 before forming the third release layer 12. Note that the die cutting machine 186 is a roll with a cutting blade,
A so-called die roll may be used. The cut laminate is separated into an unnecessary portion and a sealing piece 10 (necessary portion) by rollers 188a and 188b, and the unnecessary portion is wound up into a roll by a scrap removal roller 190 and sealed. The piece 10 (required portion) is temporarily attached to the release sheet 12 and is wound up into a roll by a winding roller 192. Note that a score forming machine may be provided in place of the die cutting machine 186 and the winding roller 192. The scoring machine includes a cutting blade. This cutting blade is for making cuts in the surface material 24, the first peeling layer 22, the temporary adhesive layer 21, the easily broken layer 20, the covering layer 16, and the adhesive layer 14 to form each sealing piece 10a. . Here, more specifically, it is as follows. (1) A polyethylene terephthalate film with a thickness of approximately 50μ is used as the surface material, and silicone resin is applied to one main surface to form the first peeling layer, and then to form the easy-to-break layer. 1st
Aluminum foil was temporarily attached on top of the release layer with adhesive to form an easily broken layer of about 7 μm. Furthermore, on the surface of this easily breakable layer made of aluminum foil, a silicone resin made by Toray Industries, Inc., which has a lower peeling force than the silicone resin forming the first peeling layer, is part-coated so that the dry film thickness is 0.1 to 5μ. to form a second release layer. On top of that, the EVA listed in Table-1 below
A coating layer is formed by coating a synthetic resin whose main component is resin to a thickness of about 5 to 50 microns.
Thereafter, an acrylic adhesive (BPS-5127) manufactured by Toyo Ink was coated to a dry film thickness of 5 to 50 μm to form an adhesive layer. At this time, the adhesive force a between the first release layer and the easily broken layer is
is approximately 50 g, the adhesive force b between the second release layer and the coating layer is approximately 30 g, and the adhesive force d of the adhesive layer is approximately 50 g.
was approximately 1000 g, and the force c required to peel the release sheet from the adhesive layer was approximately 20 g. The thus constituted pressure-sensitive adhesive was formed into a sealing piece and pasted on a material to be pasted (paper box, etc.). At this time, the adhesive force d to the adhered material and the adhesive force d' between the coating layer and the adhesive layer were about 1000 g. When an attempt was made to forcefully peel off the pasted sealing piece from the material to which it was pasted, the easily broken layer was torn at the border between the part where the second peeling layer was formed and the part where the second peeling layer was not formed. At the release layer site, the torn easily broken layer was peeled off from the adhered material together with the surface material.

【table】

[Table] (2) A polyester film with a thickness of about 50μ is used as the surface material, and silicone resin is applied to one main surface to form the first release layer, and then to form the easily broken layer. A so-called brittle film was temporarily attached with adhesive to form an easily broken layer of about 7 μm. Furthermore, on the surface of the easily broken layer made of this brittle film, a silicone resin made by Toray Industries, Inc., which has a lower peeling force than the silicone resin forming the first peeling layer, is part-coated to a dry film thickness of 0.1 to 5μ. to form a second release layer. Thereon, a synthetic resin containing EVA resin as a main component is coated to a thickness of about 5 to 50 microns to form a coating layer. After that, apply Toyo Ink's acrylic adhesive (BPS-5127) to a dry film thickness of 5.
An adhesive layer was formed by coating to a thickness of ~50μ. At this time, the adhesive force a between the first release layer and the easily broken layer is about 50 g, the adhesive force b between the second release layer and the coating layer is about 30 g, and the adhesive force d of the adhesive layer is approximately 1000g, and the force c required to peel the release sheet from the adhesive layer is approximately 20g.
It was hot. The thus constituted pressure-sensitive adhesive was formed into a sealing piece and pasted on a material to be pasted (paper box, etc.). At this time, the adhesive force d to the adhered material and the adhesive force d' between the coating layer and the adhesive layer were about 1000 g. When an attempt was made to forcefully peel off the pasted sealing piece from the material to which it was pasted, the easily broken layer was torn at the border between the part where the second peeling layer was formed and the part where the second peeling layer was not formed. At the release layer site, the torn easily broken layer was peeled off from the adhered material together with the surface material. In the embodiment described above, a pressure-sensitive adhesive was used as the adhesive 14a forming the laminating agent layer 14, but for example, a sheet-like sealing material 10 as shown in FIG. 10 may be formed. In this case, pressure-sensitive adhesives tend to adhere inadvertently, so a rewetting adhesive that immediately dissolves when wetted with water and exhibits strong adhesive strength may be applied. As this rewetting type adhesive, for example, a starch-based adhesive such as water-soluble polyester, PVA (PVA), or starch glue is used. Furthermore, like this,
In the case of a single leaf type (sheet-like) sealing material 10, unlike the sealing material 10 shown in the above embodiment, the third peeling layer 12 is not formed on the surface of the surface material 24, and the surface On the surface of the material 24, "Product name" and "Price" are written as shown in Fig. 10.
The printed layer 26a may be formed by appropriately printing lines such as the above. Further, as shown in FIG. 10, the wide sheet-like sealing material 10 is divided into a predetermined size by a widthwise cut 28a consisting of perforations and a lengthwise cut 28b, and the cut 28a and 28b may be separated to form a sealing piece 10a of an appropriate size. Also, the adhesive 14a forming the adhesive layer 14
Alternatively, 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 heat-sensitive adhesives, adhesives that activate when heated, such as adhesives that are mainly made of heat-melting resin such as polyethylene and bond when cooled, may also be used. good. When applying such an adhesive to the surface of the coating layer 16 of the laminate 30, it may be applied using, for example, a coating device that applies the adhesive while heating it to an appropriate temperature, and the adhesive 14a may be applied by printing or coating. Laminated body 30
is led to a dryer containing a device that blows cold air,
The adhesive layer 14 is formed by drying the laminating agent 14a.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a sealing material that is an embodiment of this invention. FIG. 2 is a sectional view showing the destroyed state of the embodiment. FIGS. 3 to 5 are illustrative views showing an example of an apparatus for manufacturing a laminate used in an embodiment of this invention. FIG. 6 is an illustrative view showing an example of an apparatus for manufacturing a laminate used in an embodiment of this invention. FIG. 7 is an illustrative view showing an example of an apparatus for manufacturing sealing pieces. FIG. 8 is an illustrative view showing another method of forming an easily broken layer. FIG. 9 is a perspective view showing how to use the embodiment. Figure 10 shows
FIG. 1 is a perspective view of the embodiment shown in FIG. 1; Figure 11 shows
FIG. 7 is a perspective view of another embodiment. In the figure, 10 is a sealing material, 12 is a third release sheet, 14 is an adhesive layer, 16 is a coating layer, 18 is a second release layer, 20 is an easily broken layer, 21 is a temporary adhesive layer,
22 is a first release layer, 24 is a surface material, 26 is a printed layer, 28, 28a, 28b are cuts, 14a is an adhesive, 16a is a coating material, 18a is a release agent, 20a is an easily broken material, 22a is a release agent agent, 24a is the surface material,
100 is a device, 102 is a holding roller, 104 is a release agent coating device, 106a, 106b are rollers, 1
08 is a storage tank, 110 is a dryer, 120 is a laminating device, 122 is a coating device, 124 is a roller, 126
1 is a roller, 128 is an adhesive device, 140 is a lamination device, 142 is a roll loading device, 144 is a release agent coating device, 150 is a lamination device, 157 is a roller, 1
54 is a roller, 156 is a cooler, 158 is a winding roller, 160 is a laminating device, 162 is a roll loading device, 166 is an adhesive coating device, 168a, 16
8b is a roller, 170 is a storage tank, 172 is a dryer,
174 is a winding roller, 220 is a laminating device, 22
2a is the main roller, 222b is the roller, 224
226 is a dryer, 228 is a winding roller, and A is a material to be adhered.

Claims (1)

[Claims for Utility Model Registration] 1. A surface material, an easily broken layer polymerized and bonded to one main surface of the surface material, and a layer formed on the surface of the easily broken layer to bond the surface material and the easily broken layer together. a first peeling layer formed on one main surface of the surface material to facilitate peeling between the surface material and the easily destructible layer; and a part of the main surface of the easily destructible layer. a second release layer formed on the second release layer, a coating layer formed on the main surface of the easily broken layer on the second release layer side, and an adhesive layer formed on the main surface of the coating layer, A sealing material that satisfies the following formula a>b, where a is the adhesive force between the first peeling layer and the easily broken layer, and b is the adhesive force between the second peeling layer and the coating layer. 2. The sealing material according to claim 1, wherein the surface material includes one rolled up in a roller shape. 3. The surface material includes a third release layer formed on the surface opposite to the surface on which the temporary adhesive layer is formed, and when the surface material is rolled up into a roll, the bonded surface material has a third release layer. The sealing material according to claim 2, which is a registered utility model, and satisfies the following formula a>b>c, where c is the force required to separate the layer from the adhesive layer. 4. The sealing material according to claim 1, wherein the surface material includes a sheet-like material. 5. The sealing material according to any one of claims 1 to 4, wherein the surface material includes a synthetic resin film. 6. The sealing material according to claim 5, wherein the surface material includes a transparent synthetic resin film. 7. The surface material includes a polyester film, as claimed in claim 5 or 6 of the utility model registration.
Sealing material as described in section. 8. The sealing material according to any one of claims 1 to 4, wherein the surface material includes paper. 9. The sealing material according to any one of claims 1 to 8, wherein the first release layer includes a release agent layer coated with silicone resin. 10. The sealing material according to any one of claims 1 to 4, wherein the first release layer includes a release agent layer coated with fluororesin. 11. The sealing material according to any one of claims 1 to 10, wherein the easily broken layer includes a metal foil layer. 12 The easily broken layer includes an aluminum foil layer,
The sealing material described in claim 11 of the utility model registration claim. 13. The sealing material according to any one of claims 1 to 10, wherein the easily broken layer includes a brittle film layer. 14. The sealing material according to any one of claims 1 to 13, wherein the temporary adhesive layer includes an adhesive layer. 15. The sealing material according to any one of claims 1 to 13, wherein the temporary adhesive layer includes a synthetic resin coating layer. 16. The sealing material according to any one of claims 1 to 14, wherein the second release layer includes a release material layer coated with silicone resin. 17. The sealing material according to any one of claims 1 to 15, wherein the second release layer includes a release agent layer coated with fluororesin. 18. The sealing material according to any one of claims 1 to 17, wherein the coating layer includes a resin layer coated with a synthetic resin. 19 The coating layer includes a resin layer coated with a synthetic resin mainly composed of EVA resin,
The sealing material described in claim 18 of the utility model registration claim. 20 The adhesive layer includes an adhesive layer made of an adhesive, as defined in claims 1 to 19 of the utility model registration claims.
The sealing material described in any of the paragraphs. 21 The adhesive layer includes an adhesive layer coated with a pressure-sensitive adhesive.
Sealing material described in Section 20. 22 The adhesive layer includes an adhesive layer coated with a re-wet adhesive.
Sealing material described in Section 20. 23 The adhesive layer includes an adhesive layer coated with a heat-sensitive adhesive.
Sealing material described in Section 20. 24 The adhesive layer includes an adhesive layer mainly made of a hot-melt resin.
Sealing material as described in section. 25. The sealing material according to any one of claims 1 to 24, wherein the surface material includes a printed layer formed on its main surface.