JP2002029181A - Pseudo-adhesive sheet and information communication device using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pseudo-adhesive sheet capable of simply recovering to an initial pseudo-adhesive state by readhering at its place after releasing and tearing an information communication device regarding a sampling inspection in a manufacturing step at an operator side, and confirming the adhesive state or the like and the information communication device using the same. SOLUTION: The pseudo-adhesive sheet S is formed by forming a resin layer 2 on at least one surface of a support 1 made of a biaxially stretched film in a coating type by a profile coater and further forming adhesive layers 3 on its both outsides in a coating type by a profile coater. The information communication device is formed by interposing the sheet S between opposed information display surfaces of a sheet 4 and adhesively integrating the display surfaces with each other releasably and readhesively after releasing. The formed communication device can be used as a mail such as a postcard, a double postcard with a reply-paid card attached, an envelope or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pseudo-adhesive sheet used for manufacturing an information communication body usable for direct mail (DM), postcards, reciprocating postcards, envelopes, and the like, and an information communication body using the same. About. More specifically, the present invention has a large amount of information because a multi-layered or folded sheet is releasably laminated, despite the fact that the appearance is a normal DM, postcard, reciprocating postcard, and postcard. The present invention relates to a pseudo-adhesive sheet used for manufacturing an information communication body capable of concealing an information communication body, and an information communication body using the same.

[0002]

2. Description of the Related Art In recent years, in a postal matter such as a postcard, an information communication body which can transmit a large amount of information by pasting or folding a sheet on which a plurality of pieces of information are described has been frequently used.
As such an information communication body, for example, a plurality of papers on which information is described are folded, and a pseudo-adhesion sheet in which a plurality of films are preliminarily releasably bonded (hereinafter referred to as pseudo-bonding) is sandwiched between the papers and integrated. There is also known a sheet or a sheet obtained by laminating a pseudo-adhesive sheet that has not yet been pseudo-bonded to a pseudo-bonding surface of a plurality of sheets, folding the sheets, and then pseudo-bonding opposing sheets.

[0003]

In the conventional information communication device using the above-mentioned pseudo adhesive sheet, once the formed pseudo adhesive surface is peeled off, it cannot be re-adhered. Extremely high concealment in transmitting the information related to. However, during the manufacture of such an information and communication body, if the formed pseudo-adhesive surface is accidentally peeled off, the same processing conditions as when the initial pseudo-adhesion was formed were reproduced and re-adhered. However, it cannot be expected that the pseudo-adhesion state is firmly restored from the initial state, and spontaneous peeling easily occurs with a small force. Therefore, the information communication body having the pseudo-adhesive surface re-adhered as described above has not only a peel strength enough to withstand mailing but also no confidentiality. Can not be reused as it is.

[0004] By the way, the operator who manufactures the information communication body is required to confirm whether the position of the pseudo adhesive sheet with respect to the sheet is proper, whether the sheet and the pseudo adhesive sheet are securely bonded, and whether the pseudo adhesive surface can be peeled off. Since it is necessary to always check whether or not the adhesive strength is appropriate, an operation of extracting an arbitrary information communication body at any time during manufacture, peeling off and opening the package, and checking is performed. In the above-described sampling inspection, the peeling and opening and the confirmation of the adhesion state and the like are performed on the information communication body on which the address and the personal information have already been actually printed and printed. As described above, it is difficult to reliably reattach the pseudo-adhesive surface of the communication body.Therefore, it is necessary to print and reprint the paper again in a separate process to manufacture a new information communication body. Required a lot of labor and man-hours. Moreover,
In most cases, the data to be printed or printed is not in the hands of the operator and is owned by the user requesting the manufacture of the information communication body. Therefore, the operator side wants to somehow avoid such a troublesome remanufacturing operation after the above confirmation.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems relating to a conventional pseudo adhesive sheet and an information communication body using the same.
After confirming the adhesion state etc. by peeling and opening the information communication body related to the sampling inspection in the manufacturing process on the operator side,
It is an object of the present invention to provide a pseudo-adhesion sheet which enables re-adhesion on the spot and easily restore the original pseudo-adhesion state, and an information communication body using the same.

[0006]

In order to achieve the above object, a pseudo-adhesive sheet according to the present invention is provided by heating a resin layer on at least one surface of a support made of a biaxially stretched film by a coating method using a contour coater. And / or pressurized, and further, by forming an adhesive layer on both outer sides by a coating method using a contour coater, the adhesive layer can be peeled off at the interface between the opposing support and the resin layer and can be re-adhered after peeling. It is characterized by. In order to further achieve the above object, another pseudo-adhesive sheet for an information communication device according to the present invention is a heating and / or heating method wherein a resin layer is coated on one surface of a support made of a biaxially stretched film by a coating method using a contour coater.
Alternatively, by forming under pressure and forming an adhesive layer on the other surface by a coating method using a contour coater, the resin layers are opposed to each other when they are adhered under heating and / or pressure while facing each other. It is characterized in that it can be peeled off at the interface between the body and the resin layer and / or at the interface between the resin layer and the resin layer and can be re-adhered after the peeling. Each of the pseudo adhesive sheets is interposed between the opposed information display surfaces of the paper having the information display surface, and the information display surfaces are bonded and integrated so that the information display surfaces can be separated and re-bonded after the separation. The created information communication body can be used as a postal matter such as a postcard, a reciprocating postcard, a sealed letter, etc. as long as its weight, dimensions, etc. are suitable for the postal law.

As the support used in the present invention, a biaxially stretched film made of polyethylene terephthalate, polypropylene or the like can be suitably used. A biaxially stretched film made of polyethylene terephthalate, polypropylene, or the like has a relatively uniform thickness and is highly smooth. The biaxial stretching method is roughly classified into a tenter type biaxial stretching and a tube type biaxial stretching. Either type can be used for the support of the present invention, but the former type is particularly advantageous in terms of smoothness. As will be described later, since the smoothness of the pseudo adhesive sheet appears as a very large effect and effect in the present invention, the support, the resin layer, and the adhesive layer all require smoothness. .

Next, as a resin layer used in the present invention,
Polyethylene, polypropylene, polyester,
Resins selected from the group consisting of ethylene vinyl acetate copolymers, ethylene acrylic acid copolymers, ethylene ethyl acrylate copolymers, ionomers, polyamides, acrylic resins, and mixed resins thereof can be suitably used. These resins may optionally contain tackifiers,
Various waxes, fillers, blocking inhibitors, coupling agents, release agents, lubricants, antioxidants and the like may be added and adjusted.

The resin as described above is laminated on a support under heating and / or pressure by a coating method using a contour coater capable of forming a layer having a smooth and uniform thickness on a smooth surface. Examples of the contour coater include an air doctor coater, a reverse roll coater, a natural roll coater, a transfer roll coater, a gravure coater, a kiss roll coater, a cast roll coater, a spray coater, a curtain coater, a calendar coater, and an extrusion coater. In addition, the types of coating provided for each of the above-mentioned coating methods include solution-type coating using a solution obtained by dissolving a coating resin in an organic solvent or water, and adding a necessary additive as necessary. Emulsion coating in which water is dispersed in water or an organic solvent, and hot melt coating using a solution in which a coating resin is heated to a melting point or higher and dissolved. The coating method, the type of coating, and the like may be arbitrarily selected in consideration of compatibility with the support or resin to be adopted, suitability of the resin itself, external conditions, and the like.

Further, the adhesive layer used in the present invention may be any one which can produce an adhesive force under a specific condition. For example, a polyethylene-based or polypropylene-based resin having a lower melting point than the resin of the resin layer may be used. A resin selected from the group consisting of polyester, ethylene-vinyl acetate copolymer, ethylene acrylic acid copolymer, ethylene ethyl acrylate copolymer, ionomer, polyamide, acrylic, polyurethane resin and their mixed resins. A heat-sensitive adhesive layer containing is preferably used, and includes a tackifier, various waxes, a filler, an anti-blocking agent, a coupling agent, a release roll, if necessary, similarly to the resin layer described above. Agents, lubricants, antioxidants and the like may be added and adjusted. The adhesive layer is also formed in a smooth and uniform thickness by a coating method using a contour coater, as in the case of the resin layer described above. Further, the types of coatings used in the coating method include solution coating, emulsion coating, hot melt coating, and the like, as described above.

When a resin layer is formed on the surface of a support by a coating method using a contour coater, the resin layer is formed so as to trace the contour of the surface of the support with a uniform thickness as shown in FIG. On the other hand, when a coating method other than the contour coater, for example, a coating method such as a flattening coater, is used, as shown in FIG. The thickness of the resin layer to be formed varies from place to place, and such a variation in thickness can be an important factor that hinders restoration of a favorable pseudo-adhesion state. In other words, even after the pseudo-adhesion surface is peeled off, even if the pseudo-adhesion surface is restored to the pseudo-adhesion state, the thickness of the newly-opposited resin becomes significantly different only by a slight shift from the initial opposition surface. The resulting differences in bonding pressure and the like are scattered in various places, and ultimately cause the pseudo bonding force to be extremely weak.

The peel strength of the pseudo-adhesion surface is usually 2
In an environment of a standard temperature of 3 ° C. and a standard humidity of 50% RH, a T-type peel strength of 300 mm / min has a T-peel strength of 10 to 80.
It is preferably in the range of g / 50 mm. If the peel strength of the pseudo-adhesive surface is smaller than the above numerical range, it will spontaneously peel and cannot withstand mailing. If it is larger than the above numerical range, the curl (roll) will come out strongly after peeling and developing, making it difficult to read information. . By the way, in the conventional pseudo-adhesive sheet, even if the pseudo-adhesive sheet is once peeled and developed, and the restoration of the pseudo-adhesion state is attempted under the initial pseudo-adhesion forming conditions, the peel strength is generally only 5 g / 50 mm or less. Since natural peeling occurs at a peeling strength, it is impossible to use it for practical use. However, in the pseudo adhesive sheet according to the present invention, since the support, the resin layer, and the adhesive layer all maintain uniform thickness and smoothness, the pseudo adhesive force of the formed or formed pseudo adhesive surface Is extremely uniformly stabilized, and it becomes easy to restore the pseudo-adhesion state after peeling and development.

There are two main methods of manufacturing an information communication body using the pseudo adhesive sheet according to the present invention. One manufacturing method is a method in which a pseudo-adhesive sheet, which has been pseudo-adhered in advance, is sandwiched between opposed sheets, and the sheets are integrated by an adhesive layer. In this case, for example, a pseudo-adhesion in which a resin layer is formed on one surface of the support by heating and / or pressure, and a heat-sensitive adhesive layer, a pressure-sensitive adhesive layer, or another adhesive layer is formed on both outer sides thereof. The sheet and the pseudo-adhesive sheet are sandwiched between sheets facing each other, and the adhesive layer is provided with a condition capable of generating an adhesive force, for example, by applying heat, pressure, irradiation of energy rays such as ultraviolet rays or electron beams, and other conditions. It is bonded and integrated. And about the obtained information communication body, when the papers are peeled in opposite directions,
Both are separated from the interface between the support and the resin layer. The peeled paper can be restored to the same state as the pseudo-adhesion before peeling by applying the initial pseudo-adhesion forming condition by heating and / or pressing again by facing the separated paper. In addition, the resin layer and the adhesive layer may be simultaneously formed on the support by a co-extrusion coater or the like, and there are many methods that are advantageous in terms of production. It is important to obtain an adhesive layer, and for the production method, an optimal method may be selected according to conditions at that time and the like.

In another manufacturing method, a resin layer is formed on one surface of a support by heating and / or pressing, and a heat-sensitive adhesive layer, a pressure-sensitive adhesive layer, and other adhesives are formed on the other surface. A three-layer pseudo-adhesive sheet having layers formed in advance is bonded and laminated with the adhesive layer on the pseudo-bonding surface of the information communication body, and the resin layers on the opposing paper surfaces are heated and / or folded by folding or bonding. Alternatively, a pseudo bonding method is performed later by applying pressure. Note that, instead of forming the adhesive layer in advance on the surface of the support opposite to the resin layer as described above, if necessary, for example, in a two-layer pseudo-adhesive sheet composed of the support and the resin layer The adhesive layer may be bonded and laminated to the pseudo-bonding surface of the information communication body while forming the adhesive layer on the surface of the support opposite to the resin layer by coating and drying. When the two sheets of the information communication body obtained as described above are peeled in opposite directions, they are separated from the interface between the support and the resin layer and / or from the interface between the resin layer and the resin layer. The peeled paper can be restored to the same state as the pseudo-adhesion before peeling by applying the initial pseudo-adhesion forming condition by heating and / or pressing again by facing the separated paper. In both of the above-mentioned manufacturing methods, the pseudo bonding is selected under heating, pressing, or a combination thereof depending on the type, physical properties, coating thickness and the like of the resin.

That is, the pseudo adhesive sheet according to the present invention is configured such that the support, the resin layer, and the adhesive layer all have an extremely smooth and uniform thickness. Therefore, unlike the case where the thickness of each layer varies, a uniform pseudo-adhesion state is formed at all places of the pseudo-adhesion portion. It is very easy to restore the state completely.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of a pseudo adhesive sheet according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of an information communication body finished using the pseudo adhesive sheet shown in FIG. FIG. 3 is a cross-sectional view of a pseudo adhesive sheet according to another embodiment of the present invention, and FIG. 4 is a cross-sectional view of an information communication body finished using the pseudo adhesive sheet shown in FIG. FIG. 5A is a cross-sectional view of a support body coated with a resin layer using a contour coater, and FIG. 5B is a cross-sectional view of a support body coated with a resin layer using a coater other than the contour coater.

[Example 1] In FIG. 1, a pseudo adhesive sheet S was manufactured by biaxial stretching with a tenter method and had a thickness of 20 μm.
An extruder coater is used to form a resin layer 2 made of polyethylene having a thickness of 8 μm on a support 1 made of a polyethylene terephthalate film having a thickness of 8 μm under heating and pressurization. Is formed by forming a heat-sensitive adhesive layer 3 using as a base polymer. This pseudo-adhesive sheet S is a support 1
At the interface between the resin layer 2 and the resin layer 2. As shown in FIG. 2, the pseudo-adhesive sheet S is sandwiched between the printed opposing surfaces of a pair of papers 4 and 4 made of postcard-sized coated paper having a basis weight of 110 kg in terms of 46 format, and The information communication body X was manufactured by passing between heat rollers (applied pressure: about 10 kg) whose feed rate was adjusted to 90 ° C. When the two sheets of the information communication body X were once peeled off, they were peeled off at the interface between the support 1 and the resin layer 2, and the peel strength of the pseudo bond in that case was measured.
At a standard temperature of 23 ° C. and a standard humidity of 50% RH, the T-peel strength at a peel speed of 300 mm / min was 25 g / 50 mm. The information communication body X once peeled as described above is passed between heat rollers under the above-described conditions in order to reproduce the heating and pressurization under the conditions at the time when the pseudo-bonded state between the support and the resin is formed. When the bonded state was restored and the peel strength of the restored pseudo bond was measured, the peel strength was 24 g / 50 mm under the same measurement conditions as above, and a continuous and uniform pseudo-bonded state having the same feeling as the original could be restored. .

Example 2 In FIG. 3, the pseudo adhesive sheet S is 18 μm thick manufactured by biaxial stretching with a tenter method.
A 2 μm thick ionomer resin layer 2 is formed on one surface of a support 1 made of a polypropylene film having a thickness of 2 m by a reverse coater, and an ethylene acrylic acid copolymer having a thickness of 20 μm is formed on the other surface by an extrusion coater. It is formed by forming a heat-sensitive adhesive layer 3 as a base polymer.
This pseudo-adhesive sheet S is in a state of being pseudo-adhered at the interface between the support 1 and the resin layer 2 in advance. Is to be performed. As shown in FIG. 4, the pseudo adhesive sheet S was weighed 9
It is laminated on the surface of a double-size postcard 4 made of high-quality paper on which 0 kg has been printed, folded in two so that a step is formed at the edge, and folded so that the resin layers 2 face each other. Then, the resin layer 2 was quasi-adhered to each other by passing between pressure rollers adjusted so as to obtain an information communication body X. When this information communication body X was once peeled off, it was peeled off at the interface between the resin layers 2 and the peel strength of the pseudo bond was measured. In this case, the standard temperature was 23 ° C., the standard humidity was 50% RH. And the T-peel strength at a peel speed of 300 mm / min was 20 g / 50 mm. The information communication body X once peeled as described above is passed between the pressure rollers under the above conditions in order to reproduce heating and pressing under the conditions when the pseudo-adhesion state between the resin layers 2 is formed, When the pseudo-adhesion state was restored and the peel strength of the restored pseudo-adhesion was measured, it was 19 g / 50 m under the same measurement conditions as above.
m, and a continuous and uniform pseudo-adhesion state having the same feeling as the initial state could be restored.

The present invention is not limited to the above embodiment. For example, the pseudo adhesive sheet S according to the first embodiment
In the case of, the resin layer 2 was formed on one surface of the support 1,
It can be formed on both sides. If the corona treatment or the anchor treatment is performed on either side of the support, the resin layer on the non-treated side is peeled off. Also, paper 4
There are no restrictions on the number of folds or fold variations.Three folds, four folds, or separate sheets can be attached to them. In the case of three folds, Z folds and roll folds can be selected. In the case of folding, folding, folding, double-folding, etc. can be selected. And when a plurality of opposing surfaces are generated in this way, it is not necessary to pseudo-adhere all of the opposing surfaces, and pseudo-adhere only an arbitrary opposing surface,
The remaining opposing surfaces may be completely adhered or left free without any adhesion. For example, in the case of three-folding (Z-folding and winding-folding), two opposing surfaces are generated, but the opposing surfaces to be folded first are pseudo-adhered to form an outbound postcard, and the remaining opposing surfaces are left free and returned. If it is a postcard, it can be used as a two-page spread reciprocating postcard. Further, there is no limitation on the opening which is the starting point of the peeling of the information communication body. For example, the non-adhesive portion on the edge of the sheet may be gripped with a finger as in the first embodiment, or may be peeled as in the second embodiment. Peeling may be performed using a step provided on the edge of the sheet. As another method, a notch may be provided in a corner portion of the paper 4 to form a step, and an opening with a slit or a perforation may be employed.

[0020]

The pseudo adhesive sheet according to the present invention is a support,
The resin layer and the adhesive layer are all configured to be extremely smooth and have a uniform thickness. Therefore, unlike the case where the thickness of each layer varies, a uniform pseudo-adhesion state is formed at all places of the pseudo-adhesion portion, and the same processing conditions as the initial pseudo-adhesion formation conditions are reproduced after peeling. A good pseudo-adhesion state before peeling can be easily restored. Therefore, it is possible for the operator who manufactures the information communication body to peel off the finished information communication body to check for defects and then to re-attach it on the spot, thereby improving work efficiency and improving defective products. Is eliminated.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a pseudo adhesive sheet according to an example of the present invention.

FIG. 2 is a cross-sectional view of the information communication body finished using the pseudo adhesive sheet shown in FIG.

FIG. 3 is a cross-sectional view of a pseudo adhesive sheet according to another embodiment of the present invention.

FIG. 4 is a cross-sectional view of the information communication body finished using the pseudo adhesive sheet shown in FIG.

5A is a cross-sectional view of a support coated with a resin layer using a contour coater, and FIG. 5B is a cross-sectional view of a support coated with a resin layer using a coater other than the contour coater.

[Explanation of symbols]

 S pseudo adhesive sheet X information communication body 1 support 2 resin layer 3 adhesive layer 4 paper

Claims (7)

[Claims] 1. A resin layer is formed on at least one surface of a support made of a biaxially stretched film under heating and / or pressure by a coating method using a contour coater, and further, an adhesive layer is formed on both outer sides by a contour coater. A pseudo-adhesive sheet formed by a coating method so that it can be peeled off at the interface between the opposing support and the resin layer and can be re-attached after peeling. 2. A resin layer is formed on one surface of a support made of a biaxially stretched film under heating and / or pressure by a coating method using a contour coater, and an adhesive layer is formed on the other surface by a contour coater. By forming by a coating method, when the resin layers are opposed to each other and bonded under heating and / or pressure, the resin layers can be separated at the interface between the support and the resin layer and / or at the interface between the resin layer and the resin layer. A pseudo-adhesive sheet characterized in that it can be re-adhered after peeling. 3. The pseudo adhesive sheet according to claim 1, wherein the support is made of a resin selected from the group consisting of polyethylene terephthalate and polypropylene. 4. The resin layer is made of polyethylene, polypropylene, polyester, ethylene vinyl acetate copolymer, ethylene acrylic acid copolymer, ethylene ethyl acrylate copolymer, ionomer, polyamide,
The pseudo adhesive sheet according to claim 1, comprising a resin selected from the group consisting of an acrylic resin and a resin mixture thereof. 5. An adhesive layer comprising: polyethylene, polypropylene, polyester, ethylene vinyl acetate copolymer, ethylene acrylic acid copolymer, ethylene acrylate ethyl copolymer, ionomer, polyamide, acrylic, The pseudo-adhesive sheet according to claim 1 or 2, which is a heat-sensitive adhesive layer containing a resin selected from the group consisting of a polyurethane resin and a mixed resin thereof. 6. Information characterized in that the information display surfaces of sheets having at least two or more information display surfaces are bonded and integrated via the pseudo adhesive sheet according to any one of claims 1 to 5. Communication body. 7. The information communication body according to claim 6, which is used as a mail.