JP4700984B2 - Re-peeling laminate and re-peeling form using the re-peeling laminate - Google Patents

Description

  The present invention relates to a re-peeling laminate in which a plurality of form substrates are bonded so as to be re-peelable, and a re-peeling form using the re-peeling laminate.

  The re-peeled laminate is a laminate in which at least two form substrates are laminated so that they can be re-peeled. As a re-peel form using such a re-peeled laminate, for example, a concealment postcard is known. Yes.

  FIG. 9 shows an example of a conventional concealment postcard configured as a re-peeling form. As shown in FIG. 9 (a), the concealment postcard a is a piece to be adhered b as a postcard paper, A concealing piece portion c as a concealing sheet is coupled in a foldable manner via a fold line d, and a concealment information entry area e for entering concealment information is provided on the upper surface of the adherend piece portion b. It has been. Further, as shown in FIG. 9 (b), a re-peeling adhesive f is disposed on substantially the entire surface of the upper surface of the concealing piece c, and a peeling layer g is formed on the re-peeling adhesive f. The provided release paper h is pasted so as to be removable (see Patent Document 1). A re-peeling laminate j is constituted by the concealing piece c and the re-peeling adhesive f, the peeling layer g, and the release paper h laminated on the upper surface thereof.

As shown in FIG. 9 (c), the concealed postcard a is written in the secret information entry area e of the adherend piece part b, and then the release paper h is peeled off and closed in a folded shape. The concealing piece part c is detachably adhered to the adherend piece part b via the adhesive force of the re-peeling adhesive f, so that the confidential information entered in the confidential information entry area e can be concealed. After the concealment postcard a is mailed, the recipient can know the concealment information by removing the concealment piece c again.
Japanese Patent No. 2937732

  By the way, in the concealment postcard a having the conventional configuration, the re-peeling pressure-sensitive adhesive f is used to bond the concealing piece part c and the adherend piece part b. Because of the characteristics of f, anyone can easily peel off the concealing piece c and reattach it without leaving any traces, so there is a problem that the concealing property of the confidential information is low.

  The present invention has been made to solve such conventional problems, and it is an object of the present invention to provide a re-peeled laminate having a novel structure and a re-peelable form using the re-peeled laminate. is there.

  In the present invention, a pressure-sensitive adhesive layer is disposed on a first form substrate, a delamination layer made of cationically polymerized silicone is disposed on the pressure-sensitive adhesive layer, and cationic polymerization is performed on a required area surface of the delamination layer. A curing inhibition layer containing an alkaline substance that prevents the polymerization of silicone to be in an uncured state is disposed, and a second form substrate is disposed so as to cover the delamination layer including the curing inhibition layer. The re-peeled laminate is characterized in that the delamination layer on the surface of the required region is held in an uncured state by the alkaline substance of the curing inhibition layer.

  In this configuration, a strong adhesive pressure-sensitive adhesive is suitably used for the pressure-sensitive adhesive layer. The cationic polymerization silicone is a silicone that polymerizes (cures) using hydrogen ions under acidic conditions as a catalyst. If an alkaline substance is present during the polymerization, the polymerization (curing) is inhibited. The curing inhibition layer containing the alkaline substance can be formed as an ink printing layer to which an alkaline substance such as amine is added.

  In the present invention, the pressure-sensitive adhesive layer is disposed on the first form base material, and the delamination layer made of cationically-polymerized silicone is disposed on the pressure-sensitive adhesive layer, excluding the required area surface of the delamination layer. A contact blocking layer that does not contain an alkaline substance is disposed on the surface of the region, and further covers the delamination layer including the contact blocking layer, thereby preventing the polymerization of the cationically polymerized silicone and exhibiting alkalinity that makes it uncured. A two-sheet base material is arranged, and the delamination layer on the required area surface excluding the area surface where contact with the second form substrate is blocked by the contact blocking layer is uncured by the alkaline second form substrate. It is a re-peeling laminate characterized in that it is held in a state.

  In this configuration, a strong adhesive pressure-sensitive adhesive is suitably used for the pressure-sensitive adhesive layer. The cationic polymerization silicone is a silicone that polymerizes (cures) using hydrogen ions under acidic conditions as a catalyst. If an alkaline substance is present during the polymerization, the polymerization (curing) is inhibited. The contact blocking layer not containing an alkaline substance can be formed as a printing layer of an ink not containing an alkaline substance such as amine. Further, the second form base material exhibiting alkalinity is used for calcium carbonate used as a filler for the purpose of improving the smoothness and whiteness of paper and the sizing agent for adjusting the moisture absorption of paper. Form base materials containing alkaline substances such as alkyl ketene dimers and alkenyl succinic anhydrides can be used.

In the present invention, the concealing piece portion is coupled to one side edge of the adherend piece portion via a fold line, and the secret information is provided at a predetermined position on the upper face of the adherend piece portion at least at a position excluding the opposing edge of the fold line. A pressure-sensitive adhesive layer is disposed on substantially the entire upper surface of the concealing piece portion of the first form substrate provided with an entry area, and a delamination layer made of cationically polymerized silicone is disposed on the entire surface of the pressure-sensitive adhesive layer. On the delamination layer, on the required area surface that coincides with the secret information entry area of the adherend piece in a state in which the first form substrate is folded at the fold line, the polymerization of the cationic polymerization silicone is hindered. A curing inhibition layer containing an alkaline substance to be cured is disposed, and a second form substrate is disposed so as to cover the delamination layer including the curing inhibition layer. At the time of peeling, the delamination layer held in an uncured state delaminates and sticks Remaining layers, the adhesive layer is removable form the adhesive strength of the required area surface is deposited confidential information entry region is characterized by being provided so as to decrease. Such a re-peeling form can be used as a cover-up postcard.

  In this configuration, it is most preferable that the secret information entry area provided on the upper surface of the adherend piece part is provided at a predetermined position excluding at least three edges other than the one edge on the folding line side.

Further, according to the present invention, the concealing piece portion is coupled to one edge of the adherend piece portion via a fold line, and the secret information is provided at a predetermined position on the upper face of the adherend piece portion at least excluding the opposing edge of the fold line. A pressure-sensitive adhesive layer is disposed on substantially the entire upper surface of the concealing piece portion of the first form substrate provided with an entry area, and a delamination layer made of cationically polymerized silicone is disposed on the entire surface of the pressure-sensitive adhesive layer. On the delamination layer, no alkaline substance is contained on the area surface excluding the required area surface that coincides with the confidential information entry area of the piece to be adhered in a state where the first form substrate is folded at the fold line. A contact blocking layer is disposed, and a second form base material that exhibits an alkalinity that prevents polymerization of the cationically polymerized silicone and uncured is disposed so as to cover the delamination layer including the contact blocking layer. When the second form substrate is peeled off, it is held in an uncured state. And delamination layer has remains in delamination to the adhesive layer, characterized in that the pressure-sensitive adhesive layer, adhesive strength of the required area surface is to be applied to the confidential information writing area is provided so as to decrease It is a re-peeling form. Such a re-peeling form can also be used as a cover-up postcard.

  Even in this configuration, the secret information entry area provided on the upper surface of the adherend piece is most preferably provided at a predetermined position excluding at least three edges other than the one edge on the folding line side.

  Further, in the configuration of each re-peeling form, a configuration is proposed in which a perforation for separating the confidential information entry area is formed on the adherend piece so as to surround the confidential information entry area.

  In the present invention, as described above, the pressure-sensitive adhesive layer is disposed on the first form substrate, the delamination layer made of cationically polymerized silicone is disposed on the pressure-sensitive adhesive layer, and the required area of the delamination layer On the surface, a curing inhibiting layer containing an alkaline substance that prevents the polymerization of the cationically polymerized silicone to be in an uncured state is disposed, and a second form substrate is formed so as to cover the delamination layer including the curing inhibiting layer. Since it is a re-peeled laminate, the delamination layer in the required region is held in an uncured state by the alkaline substance of the curing-inhibiting layer on the surface of the required region. The delamination layer in the required region in which the inhibition layer is disposed is maintained in an uncured state, while the delamination layer in the region excluding the necessary region in which the curing inhibition layer is disposed is cured. Then, by selectively generating an uncured part and a cured part in the delamination layer in this way, the delamination layer of the uncured part delaminates and remains in the adhesive layer when the second form substrate is peeled off The adhesive strength of the pressure-sensitive adhesive layer can be greatly reduced, while the delamination layer of the cured portion is removed together with the second form substrate to expose the pressure-sensitive adhesive layer, and the adhesive strength inherent to the pressure-sensitive adhesive layer Can be demonstrated.

  In the present invention, the pressure-sensitive adhesive layer is disposed on the first form base material, and the delamination layer made of cationically-polymerized silicone is disposed on the pressure-sensitive adhesive layer, excluding the required area surface of the delamination layer. A contact blocking layer that does not contain an alkaline substance is disposed on the surface of the region, and further covers the delamination layer including the contact blocking layer, thereby preventing the polymerization of the cationically polymerized silicone and exhibiting alkalinity that makes it uncured. The two-sheet base material is arranged, and the delamination layer in the required area excluding the area where the contact with the second form base material is blocked by the contact blocking layer is made uncured by the alkaline second form base material. Since it is a re-peeled laminate characterized in that it is held, the delamination layer in the required region excluding the region where contact with the alkaline second form substrate is blocked by the contact blocking layer is in an uncured state While being held in Delamination layer in the region where the contact is interrupted between the alkaline secondary form substrate by blocking layer catalyst is cured. And in this invention, even when in this invention, the delamination layer of the uncured part is delaminated when the second form substrate is peeled by selectively generating the uncured part and the cured part in the delamination layer in this way. The adhesive layer of the pressure-sensitive adhesive layer can be greatly reduced, while the delamination layer of the cured portion is removed together with the second form substrate to expose the pressure-sensitive adhesive layer, The original adhesive force of the pressure-sensitive adhesive layer can be exhibited.

  In the present invention, the concealing piece portion is coupled to one side edge of the adherend piece portion via a fold line, and the secret information is provided at a predetermined position on the upper face of the adherend piece portion at least at a position excluding the opposing edge of the fold line. A pressure-sensitive adhesive layer is disposed on substantially the entire upper surface of the concealing piece portion of the first form substrate provided with an entry area, and a delamination layer made of cationically polymerized silicone is disposed on the entire surface of the pressure-sensitive adhesive layer. On the delamination layer, on the required area surface that coincides with the secret information entry area of the adherend piece in a state in which the first form substrate is folded at the fold line, the polymerization of the cationic polymerization silicone is hindered. A curing inhibition layer containing an alkaline substance to be cured is disposed, and a second form substrate is disposed so as to cover the delamination layer including the curing inhibition layer. At the time of peeling, the delamination layer held in an uncured state delaminates and sticks Since it is a re-peeling form characterized in that it remains on the layer and is provided so that the adhesive strength of the required area surface of the pressure-sensitive adhesive layer attached to the confidential information entry area is reduced, the confidential information After entering the confidential information in the entry area, when the second form substrate is peeled off, the required area of the adhesive layer that matches the confidential information entry area of the adherend piece due to delamination of the uncured delamination layer While the delamination layer remains on the surface and the adhesive force of the required area surface of the pressure-sensitive adhesive layer is reduced, a surface area other than the required area surface of the pressure-sensitive adhesive layer, that is, at least the folding line The area surface of the opposite edge is in a state where the adhesive layer is exposed by removing the cured delamination layer together with the second form substrate. In this state, when the first form substrate is folded in two at the fold line and closed, the concealing piece part is bonded onto the adherend piece part via the adhesive force of the adhesive layer, and the secret information is entered. The confidential information written in the area can be concealed. At this time, since the adhesive force of the required area surface of the pressure-sensitive adhesive layer attached to the confidential information entry area is reduced, the concealing piece part is weakly adhered to the confidential information entry area in a peelable manner. In addition, at least the opposing edge of the fold line is strongly bonded by the exposed pressure-sensitive adhesive layer so as not to be peeled off. Therefore, if the concealment piece part is forcibly peeled off in an attempt to know the secret information illegally, the strongly bonded part is torn, so the concealment piece part cannot be reattached without leaving a trace of separation. Thereby, the concealment property can be improved.

  In the present invention, the concealing piece portion is coupled to one side edge of the adherend piece portion via a fold line, and the secret information is provided at a predetermined position on the upper face of the adherend piece portion at least at a position excluding the opposing edge of the fold line. A pressure-sensitive adhesive layer is disposed on substantially the entire upper surface of the concealing piece portion of the first form substrate provided with an entry area, and a delamination layer made of cationically polymerized silicone is disposed on the entire surface of the pressure-sensitive adhesive layer. On the delamination layer, no alkaline substance is contained on the area surface excluding the required area surface that coincides with the confidential information entry area of the piece to be adhered in a state where the first form substrate is folded at the fold line. A contact blocking layer is disposed, and a second form base material that exhibits an alkalinity that prevents polymerization of the cationically polymerized silicone and uncured is disposed so as to cover the delamination layer including the contact blocking layer. When the second form substrate is peeled off, it is held in an uncured state. The delamination layer is delaminated and remains in the pressure-sensitive adhesive layer, and the pressure-sensitive adhesive force of the required area surface of the pressure-sensitive adhesive layer attached to the confidential information entry area is reduced. If the second form substrate is peeled off after entering the confidential information in the confidential information entry area, the confidential information is entered on the part to be adhered by delamination of the uncured delamination layer. While the delamination layer remains on the required area surface of the pressure-sensitive adhesive layer corresponding to the area, a state in which the adhesive force of the required area surface of the pressure-sensitive adhesive layer is reduced is obtained, while other than the required area surface of the pressure-sensitive adhesive layer The area surface, that is, the area surface at the opposite edge of the fold line is in a state where the adhesive layer is exposed by removing the cured delamination layer together with the second form substrate. In this state, when the first form substrate is folded in two at the fold line and closed, the concealing piece part is bonded onto the adherend piece part via the adhesive force of the adhesive layer, and the secret information is entered. The confidential information written in the area can be concealed. At this time, since the adhesive force of the required area surface of the pressure-sensitive adhesive layer attached to the confidential information entry area is reduced, the concealing piece part is weakly adhered to the confidential information entry area in a peelable manner. In addition, at least the opposing edge of the fold line is strongly bonded by the exposed pressure-sensitive adhesive layer so as not to be peeled off. Therefore, if the concealment piece part is forcibly peeled off in an attempt to know the secret information illegally, the strongly bonded part is torn, so the concealment piece part cannot be reattached without leaving a trace of separation. Thereby, the concealment property can be improved.

  Further, in the configuration in which the perforation for separating the confidential information entry area is formed in the attached piece portion so as to surround the confidential information entry area, the first form substrate is closed in two. When the secret information entered in the secret information entry area is acquired in the state where the adhesive layer is attached and at least the opposing edge of the fold line is exposed and strongly adhered so as not to be peeled off, the separation perforation is applied. The secret information entry area can be easily separated from the dressing portion, thereby facilitating acquisition of the secret information.

Below, the 1st Example of this invention is described based on FIG. This 1st Example shows one Example of the re-peeling laminated body concerning Claim 1. FIG.
As shown in FIG. 1A, the re-peeled laminate 1A has a pressure-sensitive adhesive layer 3 disposed on a first form substrate 2, and a delamination layer 4 made of cationically polymerized silicone on the pressure-sensitive adhesive layer 3. Is disposed on the surface of the required area of the delamination layer 4, and a curing inhibition layer 5 containing an alkaline substance that prevents the polymerization of the cationically polymerized silicone to be in an uncured state is disposed. A second form substrate 6 is disposed so as to cover the delamination layer 4 included. And the delamination layer 4 of the said required area | region is hold | maintained in the unhardened state with the alkaline substance of the hardening inhibition layer 5 on this required area | region surface.

  Here, paper may be suitably used for the first form base 2 and the second form base 6. A strong adhesive pressure sensitive adhesive can be suitably used for the pressure sensitive adhesive layer 3. The cationically polymerized silicone is a silicone that polymerizes (cures) using hydrogen ions under acidic conditions as a catalyst, and has the property that polymerization (curing) is inhibited when an alkaline substance is present during the polymerization. The curing inhibition layer 5 can be formed as an ink printing layer to which an alkaline substance such as amine is added. In addition to solid printing, this ink can be printed in a predetermined pattern such as a halftone dot, a line, or a lattice pattern, with a configuration area ratio changed. Here, the amine is an additive used as an initiator or a sensitizer in the ultraviolet curable ink, but in addition to the amine, an alkaline substance that can be mixed into the printing ink can also be used.

Next, a method for producing the re-peeled laminate 1A will be described.
First, the pressure-sensitive adhesive layer 3 is formed by applying a strong adhesive pressure-sensitive adhesive to substantially the entire surface of the first form substrate 2. On the other hand, the curing inhibition layer 5 is formed on one surface of the second form substrate 6 by printing ink added with an alkaline substance such as amine. The curing inhibition layer 5 is provided in a region corresponding to a required region for holding the delamination layer 4 made of cationically polymerized silicone in an uncured state. Then, on one surface of the second form substrate 6 including the curing inhibition layer 5, cation-polymerized silicone is applied to form the delamination layer 4. Here, the delamination layer 4 made of cationic polymerization silicone formed on the curing inhibition layer 5 is kept in an uncured state by being prevented from being polymerized by the alkaline substance of the curing inhibition layer 5. Further, the delamination layer 4 in the region excluding the required region where the curing inhibition layer 5 is disposed is cured.

  Thereafter, the first form substrate 2 and the second form substrate 6 are laminated. This lamination is performed so that the surface on which the pressure-sensitive adhesive layer 3 is formed and the surface on which the delamination layer 4 is formed are in close contact. Thereby, the re-peeling laminate 1A shown in FIG.

  In such a configuration, the delamination layer 4 in the required region where the curing inhibition layer 5 is disposed is kept in an uncured state, while the delamination in the region excluding the necessary region where the curing inhibition layer 5 is disposed. Layer 4 is in a cured state. Then, by selectively generating the uncured portion and the cured portion in the delamination layer 4 in this way, when the second form substrate 6 is peeled, as shown in FIG. While the peeling layer 4 is peeled off and remains in the pressure-sensitive adhesive layer 3, the adhesive strength of the pressure-sensitive adhesive layer 3 can be greatly reduced, while the delamination layer 4 in the cured portion is removed together with the second form substrate 6. Thus, the pressure-sensitive adhesive layer 3 is exposed, and the original strong adhesive force of the pressure-sensitive adhesive layer 3 can be exhibited. In this way, when providing a weakly adhering portion and a strongly adhering portion on the first form substrate 2, it is not necessary to use two types of pressure-sensitive adhesives of weak adhesiveness and strong adhesiveness. Well, cost can be reduced.

  Next, a second embodiment of the present invention will be described with reference to FIGS. This 2nd Example shows one Example of the re-peeling form concerning Claim 3 using the said re-peeling laminated body 1A.

  The re-peeling form 10A in the second embodiment is configured as a concealing postcard. As shown in FIG. 2, the first form base material 2 is formed by joining an adherent piece portion 11 and a concealing piece portion 12 of substantially the same size via a folding line 13 at one edge thereof. On the upper surface of the adherend piece 11, a secret information entry area 14 is provided at a predetermined position excluding three edges other than the one edge on the folding line 13 side. Further, a perforation 15 for separating the secret information entry area 14 is formed on the adherend piece 11 so as to surround the secret information entry area 14.

  On the other hand, as shown in FIG. 3, a pressure-sensitive adhesive layer 3 made of a strong adhesive is disposed on the upper surface of the concealing piece 12, and on the entire upper surface of the pressure-sensitive adhesive layer 3. A delamination layer 4 made of cation-polymerized silicone is provided, and on the delamination layer 4, the secret information entry area 14 of the adherend piece 11 in a state where the first form substrate 2 is folded along the fold line 13. Is provided on the surface of the required region, the curing inhibiting layer 5 containing an alkaline substance that prevents the polymerization of the cationically polymerized silicone to be in an uncured state, and further includes an upper surface of the curing inhibiting layer 5. The second form substrate 6 is disposed so as to cover the upper surface of the sheet 4. The re-peeling laminate 1A of the first embodiment is constituted by the concealing piece portion 12 and the pressure-sensitive adhesive layer 3, the delamination layer 4, the curing inhibition layer 5 and the second form substrate 6 disposed on the concealing piece portion 12. Yes.

  The re-peeling form 10 </ b> A includes a step of printing and forming the secret information entry area 14 on the adherend piece 11 of the first form substrate 2, and a separation perforation 15 surrounding the secret information entry area 14. Except for the forming step, the above-described method for producing the re-peeled laminate 1A is applied, and each material to be used is the same. Therefore, the duplicate description of the producing method and the material to be used is omitted.

  In order to use the re-peeling form 10A configured as a concealment postcard as described above, after the secret information is entered in the secret information entry area 14, the second form substrate 6 is peeled off. The uncured delamination layer 4 is delaminated by the peeling operation of the second form substrate 6, and as shown in FIG. 4 (a), the secret information entry area 14 (see FIG. 2) of the adherend piece 11 ), The delamination layer 4 remains on the required area surface of the pressure-sensitive adhesive layer 3, and the required area surface of the pressure-sensitive adhesive layer 3 becomes a weakly bonded portion 16 a with reduced adhesive strength. In the region surface other than the required region surface, that is, the region surface of the three edges other than the one edge on the folding line 13 side, the hardened delamination layer 4 is removed together with the second form base material 6, so It becomes the strong adhesion part 16b which the adhesive layer 3 exposed.

  In this state, as shown in FIG. 4B, the first form substrate 2 is folded in two at the fold line 13 and closed. By this closing operation, the concealing piece portion 12 is adhered on the adherend piece portion 11 via the adhesive force of the weakly adhering portion 16a and the strongly adhering portion 16b of the adhesive layer 3, and is entered in the concealing information entry area 14. The hidden confidential information can be concealed. At this time, the concealment piece portion 12 is weakly adhered to the secret information entry area 14 by the weak adhesion portion 16a of the pressure-sensitive adhesive layer 3, and the three edges other than the one edge on the folding line 13 side are The strong adhesive portion 16b of the pressure-sensitive adhesive layer 3 is strongly bonded so as not to be peeled off. Then, after mailing the concealment postcard concealing the concealment information in this way, the legitimate recipient can obtain the concealment information by separating the concealment information entry area 14 from the concealment postcard with the separation perforation 15.

  In such a configuration, if the third party forcibly peels off the concealing piece portion 12 in an attempt to obtain confidential information illegally, the strongly bonded three edge portions are torn, leaving no trace of separation. The concealing piece portion 12 cannot be reattached, and thereby the concealing property can be improved.

  In addition, in this second embodiment, so as to correspond to the secret information entry area 14 provided at a predetermined position of the adherend piece portion 11 excluding the three edges other than the one edge on the folding line 13 side, A curing inhibition layer 5 is provided, and when the first form substrate 2 is closed, the three edges other than the one edge on the folding line 13 side are strongly adhered by the strong adhesive layer 3 so as not to be peeled off. However, instead of this, a secret information entry area 14 is provided at a predetermined position excluding the four edges of the adherend piece 11, and the curing inhibition layer 5 is arranged so as to correspond to the secret information entry area 14. It is also possible to strongly bond the four edges at the time of closing. Further, a secret information entry area 14 is provided at a predetermined position of the adherend piece 11 excluding the opposing edge of the fold line 13, and the curing inhibition layer 5 is disposed so as to correspond to the secret information entry area 14. Thus, the opposing edges of the fold line 13 can be strongly bonded at the time of closing.

  Further, the separation perforation 15 is not necessarily required, and it is also possible to remove the secret information by separating the strongly bonded three edges (or the four edges or the opposite edge of the folding line 13) with scissors or the like. Although it is possible to know, if the separation perforation 15 is provided as in the third embodiment, the secret information entry area 14 can be easily separated from the concealment postcard without using a tool such as scissors. Is possible.

Next, a third embodiment of the present invention will be described with reference to FIG. This third embodiment shows an embodiment of the re-peeled laminate according to claim 2.
As shown in FIG. 5 (a), the re-peeled laminate 1B has a pressure-sensitive adhesive layer 3 disposed on a first form substrate 2, and a delamination layer 4 made of cationically polymerized silicone on the pressure-sensitive adhesive layer 3. A contact barrier layer 7 that does not contain an alkaline substance is disposed on a region surface excluding a required region surface of the delamination layer 4, and further covers the delamination layer 4 including the contact barrier layer 7. The second form base material 8 exhibiting alkalinity that prevents the polymerization of the cationically polymerized silicone to be in an uncured state is disposed. Then, the delamination layer 4 in a required area excluding the area where the contact with the second form substrate 8 is blocked by the contact blocking layer 7 is held in an uncured state by the alkaline second form substrate 8. ing.

  Here, paper may be suitably used for the first form substrate 2. A strong adhesive pressure sensitive adhesive can be suitably used for the pressure sensitive adhesive layer 3. The cationically polymerized silicone is a silicone that polymerizes (cures) using hydrogen ions under acidic conditions as a catalyst, and has the property that polymerization (curing) is inhibited when an alkaline substance is present during the polymerization. The contact blocking layer 7 may be formed as a non-alkaline ink printing layer to which no alkaline substance is added. Solid printing can be applied to the printing of the non-alkaline ink. In addition, the second form substrate 8 exhibiting alkalinity has calcium carbonate used as a filler for the purpose of improving the smoothness and whiteness of paper and the sizing agent for adjusting the moisture absorption of paper. A form base material containing an alkaline substance such as alkyl ketene dimer and alkenyl succinic anhydride to be used may be used.

Next, a method for producing the re-peeled laminate 1B will be described.
First, the pressure-sensitive adhesive layer 3 is formed by applying a strong adhesive pressure-sensitive adhesive to substantially the entire surface of the first form substrate 2. On the other hand, a non-alkaline ink not added with an alkaline substance is printed on one surface of the second form substrate 8 to form the contact blocking layer 7. The contact blocking layer 7 is provided in a region excluding a required region for holding the delamination layer 4 made of cationically polymerized silicone in an uncured state. Then, on one surface of the second form substrate 8 including the contact blocking layer 7, cationic polymerization silicone is applied to form the delamination layer 4. Here, the delamination layer 4 made of a cationically-polymerized silicone formed on the second form substrate 8 exhibiting alkalinity is prevented from being polymerized by contact with the alkaline second form substrate 8 to be in an uncured state. Retained. Further, the delamination layer 4 in the region excluding the required region held in an uncured state is cured because the contact with the alkaline second form substrate 8 is blocked by the contact blocking layer 7.

  Thereafter, the first form substrate 2 and the second form substrate 8 are laminated. This lamination is performed so that the surface on which the pressure-sensitive adhesive layer 3 is formed and the surface on which the delamination layer 4 is formed are in close contact. Thereby, the re-peeling laminate 1B shown in FIG.

  In such a configuration, the delamination layer 4 in the required region excluding the region where the contact with the alkaline second form substrate 8 is blocked by the contact blocking layer 7 is maintained in an uncured state, while the contact blocking layer The delamination layer 4 in a region where contact with the alkaline second form substrate 8 is blocked by 7 is in a cured state. Then, by selectively generating the uncured portion and the cured portion in the delamination layer 4 in this way, when the second form substrate 8 is peeled, as shown in FIG. While the peeling layer 4 is peeled off and remains in the pressure-sensitive adhesive layer 3, the adhesive strength of the pressure-sensitive adhesive layer 3 can be greatly reduced, while the delamination layer 4 in the cured portion is removed together with the second form substrate 8. Thus, the pressure-sensitive adhesive layer 3 is exposed, and the original strong adhesive force of the pressure-sensitive adhesive layer 3 can be exhibited. In this way, when providing a weakly adhering portion and a strongly adhering portion on the first form substrate 2, it is not necessary to use two types of pressure-sensitive adhesives of weak adhesiveness and strong adhesiveness. Well, cost can be reduced.

  Next, a fourth embodiment of the present invention will be described with reference to FIGS. This 4th Example shows one Example of the re-peeling form concerning Claim 4 using the said re-peeling laminated body 1B.

  The re-peeling form 10B in the fourth embodiment is configured as a concealment postcard. As shown in FIG. 6, the first form base material 2 is formed by joining an adherent piece portion 11 and a concealing piece portion 12 of substantially the same size via a folding line 13 at one edge thereof. On the upper surface of the adherend piece 11, a secret information entry area 14 is provided at a predetermined position excluding three edges other than the one edge on the folding line 13 side. Further, a perforation 15 for separating the secret information entry area 14 is formed on the adherend piece 11 so as to surround the secret information entry area 14.

  On the other hand, on the upper surface of the concealing piece portion 12, as shown in FIG. 7, a pressure-sensitive adhesive layer 3 made of a strongly adhesive pressure-sensitive adhesive is disposed on substantially the entire surface, and on the entire upper surface of the pressure-sensitive adhesive layer 3, A delamination layer 4 made of cation-polymerized silicone is provided, and on the delamination layer 4, the secret information entry area 14 of the adherend piece 11 in a state where the first form substrate 2 is folded along the fold line 13. The contact barrier layer 7 not containing an alkaline substance is disposed on the region surface excluding the required region surface corresponding to the above, and further, the upper surface of the delamination layer 4 including the upper surface of the contact barrier layer 7 is covered. A two-form base material 8 is disposed. The re-peeling laminate 1B of the third embodiment is configured by the concealing piece portion 12 and the pressure-sensitive adhesive layer 3, the delamination layer 4, the contact blocking layer 7 and the second form substrate 8 disposed on the concealing piece portion 12. Yes.

  The re-peeling form 10B includes a step of printing and forming the secret information entry area 14 on the adherend piece 11 of the first form substrate 2 and a separation perforation 15 surrounding the secret information entry area 14. Except for the forming step, the above-described method for producing the peelable laminate 1B is applied, and the materials used are also the same. Therefore, the duplicate description of the producing method and the materials used is omitted.

  In order to use the re-peeling form 10B configured as a concealment postcard as described above, after the secret information is entered in the secret information entry area 14, the second form substrate 8 is peeled off. By the peeling operation of the second form substrate 8, the uncured delamination layer 4 is delaminated, and as shown in FIG. 8 (a), the secret information entry area 14 of the adherend piece 11 (see FIG. 6). ), The delamination layer 4 remains on the required area surface of the pressure-sensitive adhesive layer 3, and the required area surface of the pressure-sensitive adhesive layer 3 becomes a weakly bonded portion 16 a with reduced adhesive strength. In the region surface other than the required region surface, that is, in the region surface of the three edges other than the one edge on the folding line 13 side, the hardened delamination layer 4 is removed together with the second form base material 8, so It becomes the strong adhesion part 16b which the adhesive layer 3 exposed.

  In this state, as shown in FIG. 8B, the first form substrate 2 is folded in two along the fold line 13 and closed. By this closing operation, the concealing piece portion 12 is adhered on the adherend piece portion 11 via the adhesive force of the weakly adhering portion 16a and the strongly adhering portion 16b of the adhesive layer 3, and is entered in the concealing information entry area 14. The hidden confidential information can be concealed. At this time, the concealment piece portion 12 is weakly adhered to the secret information entry area 14 by the weak adhesion portion 16a of the pressure-sensitive adhesive layer 3, and the three edges other than the one edge on the folding line 13 side are The strong adhesive portion 16b of the pressure-sensitive adhesive layer 3 is strongly bonded so as not to be peeled off. Then, after mailing the concealment postcard concealing the concealment information in this way, the legitimate recipient can obtain the concealment information by separating the concealment information entry area 14 from the concealment postcard with the separation perforation 15.

  In such a configuration, if the third party forcibly peels off the concealing piece portion 12 in an attempt to obtain confidential information illegally, the strongly bonded three edge portions are torn, leaving no trace of separation. The concealing piece portion 12 cannot be reattached, and thereby the concealing property can be improved.

  In the fourth embodiment, the contact blocking layer 7 is provided so as to correspond to the three edges other than the one edge on the folding line 13 side of the adherend piece 11, and the first form base At the time of closing the material 2, three edges other than the one edge on the folding line 13 side are strongly bonded by the strong adhesive portion 16 b of the pressure-sensitive adhesive layer 3. The secret information entry area 14 is provided at a predetermined position excluding the four edges of the portion 11, and the contact blocking layer 7 is disposed so as to correspond to the four edges including the one edge on the folding line 13 side of the adherend piece 11. It is also possible to strongly bond the four edges at the time of closing. Further, a secret information entry area 14 is provided at a predetermined position on the adherend piece 11 excluding the opposing edge of the folding line 13, and the contact blocking layer 7 is disposed so as to correspond to the secret information entry area 14. Thus, the opposing edges of the fold line 13 can be strongly bonded at the time of closing.

  Further, the separation perforation 15 is not necessarily required, and it is also possible to remove the secret information by separating the strongly bonded three edges (or the four edges or the opposite edge of the folding line 13) with scissors or the like. Although it is possible to know, if the separation perforation 15 is provided as in the fourth embodiment, the secret information entry area 14 can be easily separated from the concealment postcard without using a tool such as scissors. Is possible.

(A) is a longitudinal sectional view of the re-peeled laminate 1A according to the first embodiment, and (B) is an explanatory view showing a state in which the second form substrate 6 is peeled from the re-peeled laminate 1A. It is a top view of 10 A of re-peeling forms concerning a 2nd Example. It is a longitudinal cross-sectional view of 10 A of re-peeling forms same as the above. (A) is a longitudinal sectional view showing a state in which the second form base material 6 is peeled from the re-peeling form 10A, and (B) is a longitudinal section showing a state in which the first form base material 2 is folded in two and closed. FIG. (A) is a longitudinal sectional view of the re-peeled laminate 1B according to the third embodiment, and (B) is an explanatory view showing a state in which the second form substrate 8 is peeled from the re-peeled laminate 1B. It is a top view of re-removable form 10B concerning a 4th example. It is a longitudinal cross-sectional view of re-peeling form 10B same as the above. (A) is a longitudinal sectional view showing a state in which the second form substrate 8 is peeled from the re-peeling form 10B, and (B) is a longitudinal section showing a state in which the first form substrate 2 is folded in two and closed. FIG. (A) is a plan view of a concealed postcard a having a conventional configuration, (B) is a longitudinal sectional view of the concealed postcard a, and (C) is a longitudinal sectional view showing a state in which the concealed postcard a is folded in two and closed. It is.

Explanation of symbols

1A, 1B Re-peeling laminate 2 First form substrate 3 Adhesive layer 4 Delamination layer 5 Curing inhibition layer 6 Second form substrate 7 Contact blocking layer 8 Second form substrate 10A, 10B Re-peeling form 11 Placed piece 12 Concealed piece 13 Fold line 14 Confidential information entry area
15 Perforation for separation

Claims (5)

  A pressure-sensitive adhesive layer is disposed on the first form substrate, a delamination layer made of cation-polymerized silicone is disposed on the pressure-sensitive adhesive layer, and polymerization of the cation-polymerized silicone is performed on a required area surface of the delamination layer. A curing inhibiting layer containing an alkaline substance that is blocked to be in an uncured state is disposed, and further, a second form substrate is disposed so as to cover the delamination layer including the curing inhibiting layer. A re-peeled laminate, wherein the delamination layer is held in an uncured state by the alkaline substance of the curing-inhibiting layer on the surface of the required region.   A pressure-sensitive adhesive layer is disposed on the first form substrate, a delamination layer made of cationically polymerized silicone is disposed on the pressure-sensitive adhesive layer, and an alkaline substance is formed on a region surface excluding a required region surface of the delamination layer. A second sheet base material having an alkalinity that prevents the polymerization of the cation-polymerized silicone to be uncured and covers the delamination layer including the contact barrier layer. The delamination layer in the required area excluding the area where contact with the second form substrate is blocked by the contact blocking layer is held in an uncured state by the alkaline second form substrate. A re-peeled laminate characterized by the above. A concealing piece portion is coupled to one edge of the adherend piece portion via a fold line, and a secret information entry region is provided at a predetermined position on the upper surface of the adherend piece portion excluding at least the opposing edge of the fold line. A pressure-sensitive adhesive layer is disposed on substantially the entire upper surface of the concealing piece portion of the first form base material, and a delamination layer made of cationically-polymerized silicone is disposed on the entire surface of the pressure-sensitive adhesive layer. In the state where the first form substrate is folded at the fold line, the alkaline substance that prevents the polymerization of the cationic polymerization silicone on the required area surface that coincides with the secret information entry area of the piece to be adhered is uncured. And a second form substrate is disposed so as to cover the delamination layer including the cure inhibition layer, and when the second form substrate is peeled, an uncured state is provided. The delamination layer held in the layer is delaminated and remains on the adhesive layer, Releasable form of the pressure-sensitive adhesive layer, adhesive strength of the required area surface is to be applied to the confidential information entry region and being provided so as to decrease. A concealing piece portion is coupled to one edge of the adherend piece portion via a fold line, and a secret information entry region is provided at a predetermined position on the upper surface of the adherend piece portion excluding at least the opposing edge of the fold line. A pressure-sensitive adhesive layer is disposed on substantially the entire upper surface of the concealing piece portion of the first form base material, and a delamination layer made of cationically-polymerized silicone is disposed on the entire surface of the pressure-sensitive adhesive layer. In the state where the first form substrate is folded at the fold line, a contact blocking layer not containing an alkaline substance is disposed on a region surface excluding a required region surface corresponding to a secret information entry region of the adherend piece part. And a second form substrate having an alkalinity that covers the delamination layer including the contact blocking layer and prevents the polymerization of the cation-polymerized silicone to be in an uncured state is provided. The delamination layer is kept in an uncured state when the material is peeled off Delaminated remaining in the adhesive layer, the pressure-sensitive adhesive layer, releasable form the adhesive strength of the required area surface is deposited confidential information entry region is characterized by being provided so as to decrease.   The re-peeling form according to claim 3 or 4, wherein a perforation for separating the confidential information entry area is formed on the adhered piece portion so as to surround the confidential information entry area. .

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