JP2811052B2 - Adhesive for prevention of re-sticking - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sticking material for preventing sticking, and more particularly to a sticking material for sticking to a price tag or an opening of a container. The present invention relates to a sticking material suitable for preventing sticking. 2. Description of the Related Art Conventionally, a label for preventing sticking, which is used as a price tag or the like, has an appropriate perforation or cut in a surface base material, and is peeled off at a store or the like to be attached to another price tag. It is known that, when an attempt is made to replace the sheet, the sheet is separated or broken at a perforation or a cut, and it can be determined at a glance that the sheet is to be peeled. [0003] On the other hand, the sticking paper stuck on the opening of the container to indicate the unopened state is arranged on a display shelf at a store, for example, depending on the material of the opening of the package and the surface treatment method. The product can be picked up and easily peeled off on the spot, and after adhering foreign matter etc. into the package, it can be pasted again so that it is not obvious that the product has been peeled off. Just looking at it does not tell if the package has already been opened. Therefore, the contents of the package may be modified. For example, it is as if a toxic substance is mixed in the sweets in the package. [0004] Therefore, recently, an adhesive film which is known to have peeled off after application has come to market. FIG. 9 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, a metal layer is formed on the surface as a vapor deposition layer 16. Therefore, a part of the deposition layer 16 is not directly deposited on the film 12 due to the interposition of the silicon layer 14. Further, the vapor deposition layer 16 and the release sheet 17 are temporarily attached with the pressure-sensitive adhesive layer 18. [0005] The adhesive film 10 comprises a release sheet 17
Is peeled off, and the exposed surface of the adhesive layer 18 is pressed against an opening (not shown) of the package to be adhered. And
When the adhesive film 10 attached to the opening is peeled off, only the portion of the vapor deposition layer 16 ′ that was not directly deposited on the film 12 by the silicon layer 14 remains adhered to the opening by the adhesive layer 18. A predetermined character "opened" or the like appears depending on the remaining portion and the removed portion. Further, when the opening is opened, the remaining deposited layer 16 ′ adhered thereto is cut or torn, whereby the opened state can be known. However, since the metal of such an adhesive film 10 is deposited on the film 12 and the silicon layer 14, the film to be deposited is limited to polyester or the like. In addition to this, it is necessary to satisfy various other conditions, which has a disadvantage of increasing costs. Further, when the film 12 is peeled off, there is a disadvantage that the surface of the adhesive layer 18 which remains and is exposed to the adhered portion of the material to be adhered in the portion peeled off together with the film 12 is sticky and dusty. In addition, there was a problem in hygiene. Moreover, the film 12 can be adhered again by the exposed adhesive force of the adhesive layer 18, and the intended purpose cannot be achieved. [0007] Therefore, a main object of the present invention is to provide an adhesive material which can be seen to have been peeled off after application and does not require a vapor deposition step. According to a first aspect of the present invention, there is provided a first layer, a release layer comprising a wax-containing release agent laminated on the first layer, EVA on release layer
An adhesive material comprising a second layer coated with a resin containing: and an adhesive layer laminated on the second layer, wherein the first layer is a release layer and the second layer When the force required for peeling off from the adhesive layer is represented by a and the adhesive force of the adhesive layer to the adhered material is represented by b, the adhesive material for preventing re-placement satisfies the following expression a <b. According to the second aspect of the present invention, a first layer, a release layer made of a release agent containing wax laminated on the first layer, and a resin containing a urethane resin on the release layer And a bonding layer including an adhesive layer laminated on the second layer, wherein the first layer is separated from the second layer by a release layer. When the force required for the above is defined as a and the adhesive force of the adhesive layer with the material to be bonded is defined as b, the adhesive material for replacement prevention satisfies the following expression a <b. The adhesive layer gives the adhesive material an adhesive force for adhering 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 peeled.
The release layer facilitates separation of the second layer and the first layer. The first layer prevents the second layer from breaking or tearing. According to the present invention, since the second layer is laminated on the first layer by coating or the like, it can be manufactured without performing the conventional vapor deposition. Moreover,
Via the release layer, the second layer and the first
Layer is temporarily attached, and if the label formed into a predetermined shape is to be peeled off from the opening of the package or the like, the first layer is peeled off from the second layer and cannot be adhered again. It can be seen that the adhesive material was peeled off. Furthermore, the second
When the 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 applied adhesive material has been peeled off, and an adhesive material that does not require the conventionally required vapor deposition step 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. FIG. 1 is a sectional view showing an embodiment of the present invention. The adhesive material 10 of this embodiment is used as a label or the like, and is wound in a roll shape such that the adhesive material 10B is wound on the adhesive material 10A as shown in FIG. I have. Then, the surface layer 1 as the first layer
2, a release layer 14 is 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. Become. Then, a printing layer 24 is formed on the main surface of the surface layer 12, and further, the adhesive layer 1 of the adhesive material 10 </ b> B to be wound around
A second release layer 26 is formed on the surface of the surface layer 12 of the adhesive material 10A to be bonded to No. 8, and is subsequently formed in the same manner. A solid printed layer 23 such as silver printing is formed on the main surface of the surface layer 12 on the release layer 14 side, and a printed 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 increases the surface layer 12.
The printed layer 22 cannot be seen through from the side, and the coating of the release layer 14 can be stabilized. However, the print layers 22, 23 and 24 need not be formed. Then, the long band-shaped adhesive material 10 is configured such that cuts 28 such as perforations are formed at predetermined intervals and can be cut into predetermined small pieces. The surface layer 12 is formed to prevent the resin layer 16 from being cut or torn, and the resin layer 16 is temporarily attached via a release layer 14.
Note that examples of the surface layer 12 include, for example, paper, synthetic paper,
A film of cellophane, polystyrene, polyester, or the like, or an aluminum foil may be used.
When the adhesive piece 10a obtained by separating the adhesive layer is bent and attached to the sealing portion, the surface layer 12 is relatively soft so as not to peel off in order to restore the original state against the adhesive force of the resin layer 16. Is good. The release layer 14 is formed so that the resin layer 16 and the surface layer 12 can be easily removed in a state where they cannot be re-attached. For example, a release agent containing wax is applied. And is formed between the resin layer 16 and the surface layer 12. The resin layer 16 is used, for example, to seal the opening of the package, and is also to be cut or torn when the sealed portion is opened to make the package open. The resin layer 16 is formed by coating the surface of the release layer 14 with a resin made of a urethane resin or an EVA resin. In addition, as another example of the resin layer 16, a resin layer coated with a synthetic resin in which a metal powder is mixed with a synthetic resin and formed so as to be cut or torn by applying a relatively weak force, or the like. Is raised. The adhesive layer 18 is for giving an adhesive force to the adhesive piece 10a formed into a predetermined shape with the adhesive material 10, and is made of an adhesive such as a pressure-sensitive adhesive, for example. Formed on the surface of layer 16. In this adhesive material 10, the force required to separate the surface layer 12 from the resin layer 16 by the release layer 14 is represented by a, and the adhesive layer 18 is adhered to the adhesive material such as a package. The adhesive force with the adhered material at the time of b is assumed to be b, and in the wound adhesive material 10, adjacent adhesive materials 10 A and 1 A
0B, assuming that the force required to peel the adhesive layer 18 of the adhesive material 10B from the second peeling layer 26 of the adhesive material 10A bonded thereto is c, the force required to peel each part is: It is configured to satisfy the expression c <a <b. To use, first, the adhesive material 1 in the form of a roll is used.
0, and a predetermined length is pulled out while being peeled off from the adhering material 10A adjacent thereto, and then cut into predetermined adhering pieces 10a at cuts 28 such as perforations. ), As shown in FIG. 2), or as an opening of a candy package. In addition, as shown in FIGS. 10 (b) and (c), when the opening of the lid of the can or bottle is completely sealed,
The cuts 28 such as perforations are unnecessary, and may be used as a series. In order to open the opening of the package on which the sticking piece 10a including the surface layer 12 and the resin layer 16 is stuck as described above, the stuck sticking piece 10a is peeled off, and the sealed portion is removed. Must be opened. In this case, the surface layer 12 is weakly temporarily attached to the resin layer 16 via the release layer 14, while the resin layer 16 is strongly adhered to the opening portion of the package with the adhesive layer 18.
If only the surface layer 12 is to be peeled off, the resin layer 16 remains adhered to the sealed portion together with the adhesive layer 18. Therefore, once the surface layer 12 is peeled off, the surface layer 12 cannot be re-adhered to the surface of the resin layer 16 again, and does not return to the original state.
You can tell at a glance that it is open.
In order to completely open the opening of the package, the remaining resin layer 16 that has not been peeled must be cut, torn, or peeled off from the opening. When the resin layer 16 is cut or torn at the same time when the surface layer 12 is peeled off in order to open the sealed portion, the state of the resin layer 16 can be determined by checking the state of the resin layer 16 in the same manner as described above. It is. In this example, the sticking piece 10a is used for a package of sweets, but may be used as a part to be sealed such as a medicine package, an envelope, a bag, and a price tag indicating a price. That is natural. Hereinafter, in order to further clarify the present invention, a description will be given based on an example of a method of manufacturing an adhesive material according to the present invention. 2 and 3 are illustrative views showing one example of an apparatus for manufacturing a laminate used in an embodiment of the present invention. The laminate 30 has a release layer 14 and a resin layer 16 laminated on the surface layer 12 in that order. The apparatus 100 includes a holding roller 102 for holding a surface material 12a forming the belt-like surface layer 12 in a roll shape. Surface material 1 held by holding roller 102
2a, the one end of which is unraveled, the release agent applying device 1
04. The release agent applying device 104 is for printing and applying a release agent 14a containing, for example, silicon or fluorine resin to one surface of the surface material 12a.
And two rollers 104a and 104b. Roller 10
4a is a release agent 14a whose lower part is stored in the pan 104c.
Is immersed in. Therefore, by rotating the rollers 104a and 104b, the release agent 14a is printed and applied to the surface of the surface member 20a guided therebetween. In addition, as the release agent coating device 104, a coating device such as a gravure roll coater, a reverse roll coater, or an air knife coater may be used, or a known printing machine such as an offset printing machine or a screen printing machine may be used. Good. The surface material 12a on which the release agent 14a is printed is applied to the dryer 106 including a heater, for example.
It is led to. In the dryer 106, the release agent 14a printed and applied to the surface material 12a is dried to form the release layer 14. The surface material 12 a on which the release layer 14 is formed is guided to the winding device 108. Next, the roll-shaped surface material 12a wound around the winding device 108 is again applied to the release agent applying device 1.
04 is loaded on the holding roller 102. Then, in the same manner as described above, a release agent having a lighter release force than the release force of the release layer 14 is applied to the main surface of the surface layer 12 opposite to the release layer 14 surface, and a second release agent is applied. A release layer 26 is formed. As described above, in this embodiment, the peeling force is made different on both main surfaces of the surface material 12a. That is, the release layer 14 has a release force that is heavier than the second release layer 26. This is achieved by, for example, changing the components of the release agent to make the release force different, or by increasing the amount of the release agent applied. Change and make a difference. Then, a second release layer 26 is further formed, and the surface material 12 wound in a roll shape is formed.
a is a laminating device 11 for another resin 16a shown in FIG.
0 is loaded. The laminating apparatus 110 includes two rollers 11
2 and 114. The lower part of the roller 112 is immersed in the resin 16 a containing urethane resin or EVA resin stored in the pan 116. Therefore, the roller 112
And 114 are rotated so that the surface of the release layer 14 of the surface material 12a guided therebetween has a resin 16
a is printed and applied. Then, the surface material 12a coated with the resin 16a is further guided to the dryer 120 and dried and solidified. As a result, the surface of the release layer 14 on the surface of the surface layer 12 is coated with the resin 16a to form the laminate 30 on which the resin layer 16 is formed. Then, the laminate 30 is transferred to the next printing device 130.
Sent to The printing device 130 is formed of a known printing machine such as an offset printing machine, and is provided on the transport path of the stacked body 30. Then, the printing layer 130 is formed on the surface of the resin layer 16 by printing the characters “opened”, for example. Also, for example, when a predetermined image such as “opened” is printed on the surface of the adherend such as a package in advance and the surface layer 12 is peeled off,
If the object formed on the adherend can be seen through the resin layer 16, the printed layer 22 may not be formed. Next, the laminate 30 is guided to a cut forming device 136 for forming a cut 28 such as a cut perforation. Cut 2
Numeral 8 is for dividing the adhesive material 10 which is formed by dividing a large number of identical arrangements 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 notch forming device 136, a device including a cutting blade roller or the like may be used. However, in the case of an adhesive material in which the cut 28 is not formed, 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 print layer 22 is formed in this manner is wound up and held by a winding roller 140 in a roll shape. FIG. 4 is an illustrative view showing one example of an apparatus for further laminating the adhesive layer 18 using the laminate 30 shown in FIG. The device 150 includes a coating device 152. The application device 152 is for applying the adhesive 18a to the surface of the resin layer 16 of the laminate 30.
54 and a roller 156 provided opposite to the main roller 154. The lower portion of the main roller 154 is immersed in the adhesive 18 a stored in the pan 158, and the main roller 154 is disposed on the surface of the resin layer 16 of the laminate 30 sandwiched between the main roller 154 and the roller 156.
At 54, the adhesive 18a is applied. Then, the laminate 30 on which the adhesive 18a is applied by printing is led to a dryer 122 including, for example, a heater. In the dryer 122, the adhesive 18a printed and applied to the laminate 30 is dried to form the adhesive layer 18. Then, the adhesive material 10 formed by laminating the adhesive layer 18 and the laminate 30 is guided to the take-up roller 160. In order to perform labeling using the adhesive material 10 thus manufactured, the laminate 30 may be loaded into an apparatus for manufacturing labels including a printing apparatus. In the above embodiment, the second release layer 26
Before forming the surface layer 1, an appropriate image such as "trade name"
The printed layer 24 formed by printing on the surface of No. 2 is formed.
However, these print layers 22, 23, and 24 may be formed alone or as a combination of two or more layers, or may not be formed at all. The following is a more specific description. (1) A nylon film having a thickness of about 5 to 100 μm manufactured by Toray Industries, Inc. was used as a first layer, and wax was applied and dried as a release agent for forming a release layer. Next, a urethane resin or EVA forming a second layer on the wax
A resin, for example, a hot melt mainly containing an EVA resin shown in Table 1 is coated so as to have a thickness of about 5 to 50 μm. At this time, the force (a) required to peel off the urethane resin or the EVA resin from the wax surface was 100 g.
An adhesive manufactured by Toyo Ink Co., Ltd. is dried on the laminate of the film and the second layer thus formed in a dry film thickness of 5 to 50.
It was coated to be μ. Thereafter, when the laminate was rolled up into a roll, the force (c) required to peel off the pressure-sensitive adhesive portion from the second release layer at this time was 20 g.
The thus constituted adhesive material was labeled and attached to an adhesive material (paper box, plastic, glass bottle, etc.). At this time, the adhesive strength (b) to the adherend was 1,000 g. When the attached label was forcibly peeled off from the adherend, the nylon film of the first layer was peeled off first. [Table 1] The adhesive 18a forming the adhesive layer 18 is
The same pressure-sensitive adhesive as in the above embodiment may be used, but when forming a single-sheet (sheet-like) adhesive material 10 as shown in FIG. 5, the pressure-sensitive adhesive is inadvertently used. Adhesion can be achieved by dissolving immediately upon wetting with water and applying a rewetting adhesive that exhibits a strong adhesive force. Examples of the rewet adhesive include water-soluble polyethylene and Poval (P
VA) or a starch-based adhesive such as starch paste is used. In the case of such a single-sheet (sheet-like) adhesive material 10,
Unlike the adhesive material 10, the second release layer 26 is
There is no need to form the printed layer 24a on the surface of the surface layer 12 by printing images such as "product name" and "price" on the surface of the surface layer 12 as shown in FIG. Is also good. As shown in FIG. 5, the cuts 28a in the width direction and the cuts 28 in the longitudinal direction are formed by perforations.
b, the wide sheet-like adhesive material 10 may be partitioned into a predetermined size, and cut off at the cuts 28a and 28b to form an adhesive piece 10a of an appropriate size. The adhesive 18 forming the adhesive layer 18
As a, a heat-sensitive adhesive which has no tackiness at normal temperature but is activated when heated to generate tackiness may be used. As the heat-sensitive adhesive, the adhesive is activated by heating, for example, an adhesive which has adhesiveness mainly composed of a hot-melt resin such as polyethylene and which is bonded by cooling may be used. Good. Such an adhesive is used to laminate 3
In the case of applying to the surface of the resin layer 16 which is the second layer of No. 0, for example, as shown in FIG. 6, the application is performed using an application device 158 which applies the adhesive while heating to an appropriate temperature. The laminate 30 on which the adhesive 18a is printed and applied.
Is led to a dryer 124 including a device for blowing cold air, and the adhesive 18a is dried to form the adhesive layer 18.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view showing an embodiment of the present invention. FIG. 2 is an illustrative view showing one example of an apparatus for manufacturing a laminate used in an embodiment of the present invention; FIG. 3 is an illustrative view showing one example of an apparatus for manufacturing a laminate used in an embodiment of the present invention; FIG. 4 is an illustrative view showing one example of an apparatus for further laminating an adhesive layer 18 using the laminate 30 shown in FIG. 3; FIG. 5 is a perspective view showing another embodiment of the present invention. FIG. 6 is an illustrative view showing another apparatus for laminating an adhesive layer 18; FIG. 7 is a perspective view showing one embodiment of the present invention. FIGS. 8A, 8B and 8C are perspective views showing a method of using the adhesive material according to the present invention. FIG. 9 is a sectional view showing a conventional example. [Description of Signs] 10 Adhesive material 10a Adhesive piece 12 Surface layer 14 Release layer 14a Release agent 16 Resin layer 16 'Film 18 Adhesive layer 18a Adhesive 22 Print layer 23 Print layer 24 Print layer 26 Print layer 26 Second release layer Reference Signs List 30 Laminated body 102 Holding roller 104 Release agent application device 104a, 104b Roller 104c Pan 106 Dryer 108 Winding device 110, 110 'Laminating device 120 Dryer 122 Drying device 130, 132 Printing device 136 Cut forming device 140 Winding roller 150 Device 152 Coating device 154 Main roller 156 Roller 158 Pan 160 Take-up roller 162 Holding rollers 164, 166 Roller 168 Take-up roller

Claims (1)

(57) [Claims] A first layer; a release layer made of a release agent containing wax laminated on the first layer; a second layer formed by coating the release layer with a resin containing EVA; An adhesive material comprising an adhesive layer laminated on a layer of (a), wherein a is a force required for separating the first layer from the second layer by the release layer, and A sticking material for preventing sticking, which satisfies the following expression a <b, where b is the adhesive force with the dressing material. 2. Adhesive materials include those wound in rolls,
The sticking material for preventing sticking according to claim 1. 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. The required force is a, the adhesive strength of the adhesive layer to the adherend is b, and the second release layer of the first layer and the adhesive layer that are joined when wound into a roll are peeled off. The sticking material according to claim 2, which satisfies the following expression c <a <b, where c is the force required for the tightening. 4. The sticking material for preventing sticking according to claim 1, wherein the sticking material includes a sheet. 5. The sticking material according to any one of claims 1 to 4, wherein the first layer includes paper. 6. The sticking material according to any one of claims 1 to 4, wherein the first layer includes a synthetic resin film. 7. The sticking material according to claim 6, wherein the first layer contains cellophane. 8. The sticking material according to any one of claims 1 to 7, wherein the adhesive layer includes an adhesive layer formed by applying a pressure-sensitive adhesive. 9. The sticking material according to any one of claims 1 to 7, wherein the adhesive layer includes an adhesive layer formed by applying a rewetting adhesive. 10. The sticking material according to any one of claims 1 to 7, wherein the adhesive layer includes an adhesive layer formed by applying a heat-sensitive adhesive. 11. The adhesive material according to claim 10, wherein the heat-sensitive adhesive layer includes an adhesive layer mainly composed of a hot-melt resin. 12. The sticking material according to any one of claims 1 to 11, wherein the first layer includes a printing layer formed on a main surface thereof. 13. The sticking material according to claim 1, wherein the second layer includes a printing layer formed on a main surface thereof. 14． A first layer, a release layer formed of a release agent containing wax laminated on the first layer, a second layer formed by coating a resin containing a urethane resin on the release layer, An adhesive material comprising an adhesive layer laminated on the second layer, wherein a is a force required for separating the first layer from the second layer by the release layer, and An adhesive material for preventing sticking, which satisfies the following expression a <b, where the adhesive force with the adhesive material is b. 15. The adhesive material for preventing sticking according to claim 14, wherein the adhesive material includes a material wound in a roll shape. 16. 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. The required force is a, the adhesive strength of the adhesive layer to the adherend is b, and the second release layer of the first layer and the adhesive layer that are joined when wound into a roll are peeled off. The sticking material for preventing sticking according to claim 15, which satisfies the following expression c <a <b, where c is the force required for the tightening. 17． The said sticking material contains a sheet-like thing.
Adhesive for preventing sticking described in the above. 18. The sticking material according to any one of claims 14 to 17, wherein the first layer includes paper. 19. The sticking material according to any one of claims 14 to 17, wherein the first layer includes a synthetic resin film. 20. 20. The first layer comprises cellophane.
Adhesive for preventing sticking described in the above. 21. 21. The adhesive material according to claim 14, wherein the adhesive layer includes an adhesive layer formed by applying a pressure-sensitive adhesive. 22. 21. The adhesive material according to claim 14, wherein the adhesive layer includes an adhesive layer formed by applying a rewetting adhesive. 23. 21. The sticking material according to claim 14, wherein the adhesive layer includes an adhesive layer formed by applying a heat-sensitive adhesive. 24. 24. The sticking material according to claim 23, wherein the heat-sensitive adhesive layer includes an adhesive layer mainly composed of a hot-melt resin. 25. 25. The sticking material according to claim 14, wherein the first layer includes a printing layer formed on a main surface thereof. 26. 26. The sticking material according to claim 14, wherein the second layer includes a printed layer formed on a main surface thereof.