JPH0732769A - Envelope and postcard - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a postcard that can also be used as an envelope. [Structure] A postcard 1 is composed of a top paper piece 2 and a bottom paper piece 3, and the front surface of the top paper piece 2 is used as an address display surface and the front surface of the bottom paper piece 3 is used as a transmission information display surface. The lapped surface of 3 is strongly adhered to the peripheral edge with a pressure sensitive adhesive 4 having a strong adhesive force so as to be difficult to peel off, and includes the peelable edge of the upper paper piece 2 which remains as a sealing piece when the perforation 6 for cutting is removed by breaking. The remaining portion is releasably adhered by a pressure-sensitive adhesive 5 having a weak adhesive force and capable of being peeled off after adhesion. In the normal state of the postcard 1, the upper paper piece 2 and the lower paper piece 3 are bonded to each other over the entire surface, so that the postcard 1 can be used in the same manner as a general postcard, but the peelable edge of the lower paper piece 3 is cut with perforations 6. It can be used as an envelope by breaking and removing it, forming a sealing piece on the upper paper piece 2, and peeling the overlapping surface which is peelably adhered by the pressure-sensitive adhesive 5 from the edge portion.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a postcard which can also be used as an envelope.

[0002]

2. Description of the Related Art Conventionally, information is transmitted in a concealed state by displaying transmission information on an overlay surface and peelably adhering the overlay surface or a label to the transmission information surface. There is known a postcard having a function equivalent to that of a sealed letter (hereinafter referred to as a concealed postcard).

[0003]

However, in the above-mentioned conventional concealed postcard, there is a disadvantage that the display space of information that can be concealed and transmitted is smaller than that in the sealed letter. This is remarkable when handwriting. In the past, there was no one that could be used as a postcard and an envelope, and one could not be diverted to the other, so it was inconvenient to always have both a postcard and an envelope at hand. . The present invention has been made in view of these points, and an object thereof is to provide a postcard that can also be used as an envelope.

[0004]

In order to achieve this object, an envelope / postcard of the present invention comprises two sheets superposed on each other, and one of the exposed surfaces serves as an address display surface, and the superposed surface is sealed. The three peripheral edges excluding one edge to be a part are strongly bonded, while the remaining part of the overlapping surface is peelably bonded.

In the envelope / postcard of the present invention, one sheet is folded and overlapped, and one of the exposed surfaces is used as an address display surface, and the sealed portion of the three peripheral edges excluding the folded portion end of the overlapping surface. It is also possible to strongly bond the two edges excluding the one edge to be formed, while the remaining part of the overlapping surface is peelably bonded.

In the above-mentioned peelable adhesion of the superposed surfaces, a pressure-sensitive adhesive or a heat-sensitive adhesive having a weak adhesive force is used which does not normally adhere but can be adhered when a predetermined pressure or heat is applied. do it.

On the other hand, for the strong adhesion of the edges of the superposed surfaces described above, a pressure-sensitive adhesive or a heat-sensitive adhesive having a strong adhesive force is used, or a pressure-sensitive adhesive or a heat-sensitive adhesive having a weak adhesive force is used. The agent and the adhesion-strengthening layer may be arranged facing each other and bonded,
As the adhesion enhancing layer, fine silica powder 50 to 95 is used.
It is preferable to apply a composition comprising a dry weight% and a binder of 5 to 50 dry weight% with a coating weight of less than 3.0 g / m ² , and solid silica 5 finely dispersed in water.
0-95 dry weight% and binder 5-50 dry weight%
The composition can be formed by coating with a coating weight of less than 3.0 g / m ² .

Examples of fine powder silica include Cab
oSperse A-105, P--1175, S-1
09, P-1010 (both are trade names), Aerosi
ll30, 200, MOX80 (all are trade names) and the like, and the uniform coefficient n of the Rosin-Rammler equivalent number is preferably in the range of 1.0 to 2.6, and particularly measured by the BET method. The specific surface area is 9
CaboSp with 0-270 m ² / g and a uniform coefficient of about 1.22 for the Rosin-Rammer even number
Erse S-109 is preferred.

On the other hand, as the binder, for example, polyvinyl alcohol, carboxymethylcellulos, cellulose ether, starch and derivatives thereof, gelatin,
Examples thereof include albumin, gum arabic alkynates, polyacrylamide, polyvinylpyrrolidone, or a mixture thereof.

A preferred blending ratio is about 25-45%, preferably 36%, of a fine silica powder dispersed at 20% solids in water, 5-50% partially hydrolyzed polyvinyl alcohol in a 10% solution as a binder, Preferably 28
%, And about 25-45% water, preferably 36%.

[0011]

[Function] Since the overlapping surface is entirely adhered,
While it can be used in the same manner as a normal postcard, when the peelable overlapping surface including the sealing portion is peeled off, paper such as notepaper can be enclosed in this peeled portion, which can be used as an envelope.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. Here, FIGS. 1 to 5 show an embodiment of a postcard using two separate sheets, FIG. 1 is a plan view showing the front side which is the address display surface of the postcard, and FIG. 2 is the back side thereof. FIG. 3 is a cross-sectional view taken along line AA of FIG. 1, FIG. 4 is a cross-sectional view taken along line BB of FIG. 5, FIG. 5 is a cross-sectional view showing a state of use as an envelope, and FIG. It is sectional drawing which shows the postcard Example which folded the sheet of 2 in half.

First, a first embodiment will be described with reference to FIGS. As shown in FIGS. 1 to 4, the postcard 1 is a top paper piece 2.
And the lower paper piece 3 on the front side of the postcard 1, and the front surface side of the upper paper piece 2 on the front side of the postcard 1 is the address display surface, and the front surface of the lower paper piece 3 on the back side of the postcard 1 is the transmission information display surface. Has become. The overlapping surfaces of the upper paper piece 2 and the lower paper piece 3 are strongly adhered to each other by the pressure-sensitive adhesive 4 having a strong adhesive force at the three peripheral edges, while the remaining portion including one edge to be the sealing portion is The pressure-sensitive adhesive 5 having a weak adhesive force capable of being peeled after the bonding is peelably bonded.

As shown in FIGS. 2 and 3, the peelable edge of the lower paper piece 3 is provided with a perforation 6 for cutting in parallel with the edge, and a slit 7 for facilitating the peeling start.
Is provided. Then, by breaking the perforation 6 for cutting and removing the peelable edge of the lower paper piece 3,
The remaining peelable edge of the top paper piece 2 is configured to function as a sealing piece 9 when used as an envelope. That is, the portion of the top paper piece 2 that is to be the sealing piece 9 constitutes the sealing portion.

As the above-mentioned pressure-sensitive adhesive 4 having a strong adhesive force, a generally known pressure-sensitive adhesive may be appropriately selected and used. On the other hand, as the pressure-sensitive adhesive 9 that can be peeled off after the above-mentioned adhesion, for example, a terpene resin tackifier based on a natural rubber latex obtained by graft-copolymerizing styrene and methyl methacrylate on natural rubber. And silica gel are added.

As the bonding structure of the superposed surface of the upper paper piece 2 and the lower paper piece 3, two kinds of pressure sensitive adhesives 4 and 5 having different adhesive strengths are used, and the pressure sensitive adhesive 5 is applied to the entire superposed surfaces. On the other hand, by applying an adhesive force enhancing layer to the portion corresponding to the pressure sensitive adhesive 4 to enhance the adhesive force of the pressure sensitive adhesive 5, the three peripheral edges are strongly adhered to each other with difficulty in peeling,
You may employ | adopt the structure which adheres the remaining parts including a sealing part so that peeling is possible.

The above-mentioned adhesion-enhancing layer has a fine silica powder of CaboSperse S-109 of 35.95.
%, 28.10% of 10% Vinol 540 (trade name) as a binder, and 35.95% of water, to prepare a composition having a coating weight of 0.4 to 2.8 g / m ² ,
For example, it is formed by coating at 1.1 g / m ² / side. The coating of the composition on the superposed surface can be carried out by a commonly used conventional method such as flexography, gravure, reverse roll, and air knife. Then, by the pressure-sensitive adhesive 5 penetrating into the adhesiveness enhancing layer,
Its adhesive strength is enhanced.

Since the present embodiment is constructed as described above, the superposing surfaces of the upper paper piece 2 and the lower paper piece 3 are adhered to each other over the entire surface, and they do not separate from each other during normal handling. The addressee can be used in the same manner as a general postcard by writing the addressee on the addressee display surface, which is the exposed surface, and the communication text on the transmitted information display surface, which is the exposed surface of the lower paper piece 3.

On the other hand, the peelable edge of the lower paper piece 3 is slit 7
It is rolled up to break the perforation 6 for cutting and form a sealing piece 9 on the peelable edge of the upper paper piece 2, and a finger or a ruler is inserted from the peelable edge to peel off the peelable overlapping surface. Then, the postcard 1 becomes the envelope 1a. Therefore,
As shown in FIG. 5, a paper 8 such as a notepaper in which a communication message is written is inserted into the envelope 1a, and the sealing piece 9 is coated with an adhesive and then folded and adhered to the lower paper piece 3 to make It can be used in the same manner as an envelope using an envelope.

FIG. 6 shows another embodiment of the present invention, in which a postcard 11 is formed by folding a single piece of paper 12 and the overlapping surface is the same as that of the first embodiment. No. 5 is used to adhere the entire surface. Here, since the bent end cannot be separated, the strong adhesion with the pressure sensitive adhesive 4 is performed only at the two edges perpendicular to the bent end. The other structure and method of use in this embodiment are the same as those in the above-mentioned first embodiment, and the explanation thereof is omitted.

The present invention is not limited to the above-described embodiments, and for example, the slit 7 provided so as to be continuous with the cutting perforation 6 is not always necessary, and the cutting perforation 6 is not necessary. It may be formed by a slit, or the perforation 6 for cutting may not be provided. Further, the sheets constituting the postcards 1, 11 can be ordinary paper pieces 2, 3, 12 as well as synthetic papers or resin sheets, and the adhesive structure of the overlapping surface is appropriately selected according to the material of the adopted sheet. To be done. When the material of the adopted sheet does not have writability, appropriate processing such as matting may be performed so that the sheet has writability.

[0022]

As is apparent from the above description,
According to the present invention, since it can be used as both a postcard and an envelope, it can be used for any purpose and is excellent in usability.

[Brief description of drawings]

FIG. 1 is a plan view showing a front side of a postcard according to a first embodiment.

FIG. 2 is a plan view showing the back side of the same.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a sectional view taken along line BB of FIG.

FIG. 5 is a cross-sectional view showing a usage state as an envelope.

FIG. 6 is a sectional view showing a postcard according to a second embodiment.

[Explanation of symbols]

 1,11 Postcard 2 Top paper piece 3 Bottom paper piece 4,5 Pressure-sensitive adhesive 6 Perforation for cutting 8 Paper 9 Sealing piece 12 Paper piece

Claims (2)

[Claims] 1. A stack of two sheets, wherein one of the exposed surfaces serves as a name display surface, and three peripheral edges except one edge to be a sealing portion of the stacked surface are strongly bonded, while A postcard that doubles as an envelope, with the remaining part of the mating surface adhered in a peelable manner. 2. A single sheet is folded and folded, and one of the exposed surfaces is used as an address display surface, and one edge that should be a sealing portion is removed from the three peripheral edges excluding the folded end of the overlapping surface. An envelope and postcard in which the two edges are strongly adhered while the remaining part of the overlapping surface is adhered in a peelable manner.