JPH06106878A - Confidential postcard - Google Patents

Abstract

PURPOSE:To produce confidential postcards in large quantities by means of simple process. CONSTITUTION:A sheet of transparent resin film 5 having a thermal adhesive layer 6 formed on its one face is adhered by heating to confidential faces 2 and 3. A half body (a) of the film is peeled off from the confidential face 2 which is adhered to the confidential face 3 provisionally by the thermal adhesive layer 6 left on the confidential face 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention folds postcard paper so that two adjacent confidential surfaces face each other,
The present invention relates to a confidential postcard which is completed by pseudo-bonding the confidential surfaces in a peelable manner.

[0002]

2. Description of the Related Art Conventionally used postcards for confidential use are actually
As described in JP-A-36493, in a state in which two transparent resin films each having a heat-sensitive adhesive layer formed on one surface thereof are overlapped with each other on the other surface and bonded with a heat-sensitive adhesive, the postcard paper is folded. It is sandwiched between two confidential surfaces facing each other, and one side of each is thermocompression-bonded to the confidential surface by a heat-sensitive adhesive layer to complete. Then, when opening the confidential postcard, the transparent resin films adhered by the anchoring force weaker than the anchoring force for the postcard paper are peeled from each other, so that the confidential faces are peeled off, and each confidential face is transparent. The resin film is left to be adhered.

[0003]

However, the process of laminating two transparent resin films having a heat-sensitive adhesive layer formed on one side thereof and pasting them together with a heat-sensitive adhesive is very troublesome, and the processing cost is also high. It had the drawback of being bulky. Also,
When the two transparent resin films as described above are wound into a roll and stored, the heat-sensitive adhesive layers formed on one surface of each film are in close contact with each other and overlap each other. There is a risk that the adhesive layers may block each other and the film may not be unwound. Further, since the confidential postcard in which the two transparent resin films as described above are sandwiched between the two confidential surfaces of the postcard paper can only be produced one by one in sequence, the productivity is very poor.
Therefore, it is a technical object of the present invention to use only one transparent resin film having a heat-sensitive adhesive layer formed on one surface so that confidential postcards can be mass-produced by simple processing.

[0004]

In order to solve this problem, the present invention is completed by folding a postcard sheet so that two adjacent confidential surfaces are faced to each other, and the confidential surfaces are pseudo-adhered so as to be peelable from each other. In a confidential postcard, a transparent resin film with a heat-sensitive adhesive layer formed on one side is thermocompression-bonded by the heat-sensitive adhesive layer so as to cover two adjacent confidential surfaces of the postcard paper, and the two confidential It is characterized by being cut along the boundary of the surface.

[0005]

According to the present invention, the transparent resin film thermocompression-bonded by the heat-sensitive adhesive layer so as to cover the two adjacent confidential surfaces of the postcard paper is cut along the boundary between the two confidential surfaces. As a result, it is divided into a half body thermocompression-bonded to one confidential surface and a half body thermocompressed to the other confidential surface. In addition, the heat-sensitive adhesive layer that thermocompresses the transparent resin film on the confidential surface of the postcard paper is superior in the anchoring force to the paper rather than the anchoring force to the resin film. The half of the resin film is peeled off and removed so as to be peeled from the heat-sensitive adhesive layer anchored to the confidential surface.

[0006] Then, the postcard paper is folded so that the one confidential surface on which only the heat-sensitive adhesive layer remains and the other confidential surface on which the half body of the transparent resin film is thermocompression-bonded are faced to each other, and the other confidential surface is folded. When one half of the transparent resin film thermocompression-bonded to one surface is thermocompression-bonded to one of the confidential surfaces with the thermosensitive adhesive layer anchored to one of the confidential surfaces, the two adjacent protective surfaces are transparent resin films. A peelable pseudo-adhesive postcard is completed between the heat-sensitive adhesive layer and the heat-sensitive adhesive layer.

[0007]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of a confidential postcard according to the present invention, and FIG. 2 is a perspective view showing a manufacturing method thereof.

The manufacturing method of the confidential postcard shown in FIG.
Each of the postcard papers 1 used by folding in two is a roll of paper 4 or a sheet of paper on which two adjacent confronting surfaces 2 and 3 are arranged side by side in a two-page spread, or ethylene vinyl acetate copolymer resin on one side. , A heat roller comprising a transparent resin film 5 such as a polypropylene film or a polyester film having a heat-sensitive adhesive layer 6 formed by coating a hot-melt adhesive containing a polymer such as polyamide or polyurethane as a main component. Passing between 7 and 8, the film 5 is thermocompression bonded so as to cover the entire surface of the paper roll 4 or the sheet with the heat-sensitive adhesive layer 6 formed on one side thereof,
Cutting is performed by the cutter 9 along the boundary between the confidential surfaces 2 and 3 of the postcard sheets 1 that are adjacent to each other in the left-right direction when viewed from the feeding direction of the heat rollers 7 and 8. The transparent resin film 5 having the heat-sensitive adhesive layer 6 formed on one surface thereof is cut by cutting the roll-up paper 4 or the sheet according to the size of each postcard paper 1, as shown in FIG. A confidential postcard is obtained, which is thermocompression-bonded by the layer 6 so as to cover the two adjacent confidential surfaces 2 and 3 of the postcard paper 1 and cut so as to be divided into two along the boundary between the confidential surfaces 2 and 3. To be

When using this confidential postcard, the transparent resin film 5 thermocompression-bonded to the confidential surface 2 of the postcard paper 1 is used.
The half a is peeled off from the heat-sensitive adhesive layer 6 anchored to the confidential surface 2, and the postcard paper 1 is folded so that the confidential surfaces 2 and 3 face each other, and the postcard paper 1 is heated. Of the transparent resin film 5 thermocompression-bonded to the confidential surface 3 and then thermocompression-bonded to the confidential surface 2 with the heat-sensitive adhesive layer 6 anchored to the confidential surface 2. Two adjacent confidential surfaces 2 and 3 are peelably pseudo-adhered between the half b of the transparent resin film 5 and the heat-sensitive adhesive layer 6 of the confidential surfaces 2 and 3 to complete a confidential postcard.

In this way, in the manufacturing stage of the postcard paper 1, it is troublesome to fold the individual postcard papers 1 so that the confidential surfaces 2 and 3 face each other and sandwich the transparent resin film between the confidential surfaces 2 and 3. Since no special processing is required, the processing cost of confidential postcards is significantly reduced, and at the same time, its productivity is improved.

In the manufacturing method shown in FIG. 2, the transparent resin film 5 is cut along the boundary between the confidential surfaces 2 and 3 of each postcard sheet 1, and at the same time, the postcard sheets 1 and 1 are arranged side by side as shown by chain lines. Of the transparent resin film 5 which is thermocompression-bonded in a strip shape along the confidential surface 2 of each postcard sheet 1 before the web 4 is cut according to the size of each postcard sheet 1 by cutting along the boundary of the postcard sheets 1. If only the part to be the half a is peeled off from the confidential surface 2 in advance by winding it up on a roll, there is no need to peel off the half a from the individual postcard sheets 1, and the productivity of confidential postcards is improved. Further improve.

[0012]

As described above, according to the present invention, in the process of manufacturing a confidential postcard, two transparent resin films may be overlapped with each other and pasted, as in the conventional case.
The two transparent resin films that have been stuck together are sandwiched between the confidential surfaces of postcard paper, and there is no need to perform the troublesome processing with poor productivity of heating and pressing. It has a very excellent effect of being able to mass-produce postcards.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a confidential postcard according to the present invention.

FIG. 2 is a perspective view showing a method of manufacturing a confidential postcard according to the present invention.

[Explanation of symbols]

 1 ... Postcard paper 2 ... Confidential surface 3 ... Confidential surface 5 ... Transparent resin film a ... Transparent resin film half b ... Transparent resin film half 6 ... Heat sensitive Adhesive layer

Claims (2)

[Claims] 1. A confidential sheet, which is formed by folding a postcard sheet (1) so that two adjacent confidential sheets (2, 3) face each other and pseudo-adhesively attaching the confidential sheets (2, 3) to each other. In a postcard, a transparent resin film (5) having a heat-sensitive adhesive layer (6) formed on one surface thereof is used to heat two adjacent confidential surfaces (2, 3) of a postcard paper (1) by the heat-sensitive adhesive layer (6). A confidential postcard, which is thermocompression-bonded so as to cover it and is cut along the boundary between the two confidential surfaces (2, 3). 2. A confidential sheet which is completed by folding a postcard sheet (1) so that two adjacent confidential sheets (2, 3) face each other and pseudo-adhesively attaching the confidential sheets (2, 3) to each other. In a postcard, a transparent resin film (5) having a heat-sensitive adhesive layer (6) formed on one surface thereof is used to heat two adjacent confidential surfaces (2, 3) of a postcard paper (1) by the heat-sensitive adhesive layer (6). A half body of a transparent resin film (5) which is thermocompression-bonded so as to cover and is cut along the boundary between the two confidential surfaces (2, 3) and thermocompression-bonded to one confidential surface (2). Half (b) of the transparent resin film (5) in which (a) is peeled off from the heat-sensitive adhesive layer (6) and thermocompression-bonded to the other confidential surface (3) by the heat-sensitive adhesive layer (6). Is designed to be thermocompression bonded to one of the confidential surfaces (2). A confidential postcard to collect.