JPH03266696A - Communication body such as postcard or envelope and preparation thereof - Google Patents

Abstract

PURPOSE:To enhance working efficiency and to prevent the curl of paper or the evapo ration of moisture by thermally bonding a synthetic resin layer to the mutually opposed superposing surfaces of sheet pieces in a releasable manner and forming the synthetic resin layer from a synthetic resin capable of performing thermal bonding at heating temp. equal to or lower than specific temp. CONSTITUTION:A paper postcard main body 1 composed of one sheet is constituted of two sheet pieces 1a, 1b having the same size connected so as to be capable of being folded double. The sheet pieces 1a, 1b are bent through a bending part 6 so that the printing display parts 3a, 3b thereof become inner surfaces and the heat- adhesive synthetic resin layer 5 on the entire surface extending over the sheet pieces 1a, 1b is heated to temp. of 110 deg.C or lower to be thermally bonded. Since the synthetic resin layer 5 of this communication body can be thermally bonded at temp. of 110 deg.C or lower, the mutual release between the synthetic resin layers of the sheet pieces and that between the sheet pieces can be easily performed even after thermal bonding. It is also unnecessary to perform treatment roughening the surface of the synthetic resin layer and, therefore, it is unnecessary to set the extrusion speed of a roller, roller pressure and heating temp. to definite restricted conditions.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention provides a method for concealing and mailing communication bodies such as postcards and envelopes, and more specifically, for concealing and mailing information such as correspondence and printed display media. This invention relates to communication bodies such as postcards and sealed letters whose display surfaces are removably heat-bonded via a synthetic resin layer.

(Prior Art) Conventionally, for the purpose of concealing the above-mentioned information, etc., there is a postcard, for example, Utility Model Application Publication No. 1-174170, which has a structure in which a synthetic resin layer is releasably thermally bonded to the postcard.

That is, in this postcard, a polyvinyl chloride resin layer is provided on the inner surfaces of the two sheet pieces that form the postcard body, and the two sheet pieces are thermally bonded so that they can be separated through the polyvinyl chloride resin layer. This is what I did.

(Problem B to be solved by the invention) By the way, since the above-mentioned postcards are made by thermally adhering the sheet pieces through a polyvinyl chloride resin layer that is originally difficult to re-peel, it would be difficult to make this re-peel possible. In order to tighten the polyvinyl chloride resin layer, it is necessary to apply certain conditions to the polyvinyl chloride resin layer.

More specifically, the surface of the polyvinyl chloride resin layer is roughened, and the polyvinyl chloride resin layers can be peeled from each other by point bonding of the unevenness of the rough surface.

However, in order to achieve such roughening, in the postcard manufacturing process, the extrusion speed of the roller for heating and pressing must be set at 1.5 to 2.0 m/+++in, the roller pressure must be set at 8 kg/cd, and the heating Temperature 150-160℃
It is necessary to bond between the polyvinyl chloride resin layers under conditions such as setting.

However, under such conditions, the extrusion speed of the roller is slow, which reduces work efficiency, and the roller pressure is weak, which may cause the postcard paper to curl. Since the adhesive is bonded at a high temperature of 160° C., there is a problem in that water and humidity originally contained in the paper may evaporate and deteriorate the paper material itself.

The present invention was made to solve all of these problems, and it increases the extrusion speed of the roller to improve work efficiency, prevent paper curling and moisture evaporation, and ultimately improve postcard manufacturing. The objective is to improve overall workability.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention has been made as a communication body such as a postcard or an envelope, and a method for manufacturing the same. A synthetic resin layer 5 is formed on the inner surface of the communication rod body 1 for postcards, envelopes, etc. made of sheet pieces.
are provided, and the at least two sheet pieces are bent and overlapped with the surface on which the synthetic resin layer 5 is provided on the inner side, and the overlapping of the sheet pieces allows the synthetic resin layer 5 to face each other. In communication bodies such as postcards and envelopes that are releasably thermally bonded to each other, the synthetic resin layer 5 is made of a synthetic resin that can perform the peelable thermal bonding at a heating temperature of 110° C. or lower. It consists in becoming composed.

Furthermore, the method for manufacturing the communication body is characterized in that the sheet pieces of the communication stick main body 1, such as postcards and sealed letters, are made of at least two sheet pieces, each of which has a transparent synthetic resin layer 5 pasted on its inner surface in advance. By folding and overlapping the sheet pieces with the surface to which the synthetic resin layer 5 is attached facing the inner surface, and by overlapping the sheet pieces, it is possible to separate the facing synthetic resin layers 5 from each other at a heating temperature of 110° C. or lower. It is manufactured by thermally adhering it to.

(Function) As described above, in the communication body of the present invention, the synthetic resin layer 5 is
Since it can be thermally bonded at a heating temperature of 10° C. or lower, even after thermal bonding, the synthetic resin layers can be easily peeled from each other, and by extension, the sheet pieces can be peeled from each other easily.

Therefore, unlike the conventional postcards mentioned above, there is no need to perform treatments such as roughening the surface of the synthetic resin layer. There is no need to set it to .

(Example) Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a postcard as an example, in which (a) is a front view, (b) is a rear view, and (c) is an enlarged cross-sectional view along the line A-A of (a) with the middle omitted.

In Fig. 1, 1 is a postcard body made of paper made of one sheet, and two sheet pieces 1a and l of the same size are shown.
b are arranged in a row so that it can be folded in two.

A destination/address display section 2 is provided on the outer surface side of one sheet piece 1a to display the destination and address, and both sheet pieces 1
Print display portions 3a and 3b are provided on the inner surfaces of a and lb, respectively, and desired printing for direct mail is applied to the print display portions.

Further, on the inner surfaces of the sheet pieces 1a and Ib, a synthetic resin layer 4 made of polypropylene and an ionomer [a copolymer of ethylene containing carboxyl groups (for example, ethylene-acrylic acid copolymer resin)] are coated with an alkali metal or alkali Two synthetic resin layers are provided, including a synthetic resin layer 5 made of a material in which a metal ion bond is introduced between the main chains of a polymer using an earth metal, and a synthetic resin layer 5 made of a material made of a product made of Surlyn (trade name: a registered trademark of DuPont).

Further, the two sheet pieces 1a and lb are bent through the bending part 6 so that the printed display parts 3a and 3b are on the inner side, and the entire surface between the sheet pieces 1a and Ib is bonded with the thermal adhesive. They are releasably thermally bonded via a synthetic resin layer 5.

7 indicates an advertisement column provided on the outer surface side of the sheet piece 1b.

The recipient who has received this postcard 8 can unfold the postcard by peeling off the space between the two sheet pieces 1a and Ib, as shown in FIG. This can be confirmed.

Next, a method for manufacturing a postcard as described above will be described. First, as shown in FIG. 3, a postcard-forming paper 9 having a size four times the size of a postcard is prepared.

That is, this postcard forming paper 9 is constituted by further vertically arranging two postcard forming pieces 10, each of which is formed by two postcard-sized sheet pieces 1a and Ib arranged in series,
The upper surface of the cover 11 is pre-printed in a desired manner, and has a structure in which two synthetic resin layers 4 and 5 as described above are provided.

Next, the postcard forming paper 9 as described above is cut into two pieces as shown in FIG.
0 is folded in half so that the printed display parts 3a and 3b are on the inner side, and heat-pressed at a temperature of about 90°C to form sheet pieces 1a,
By polymerizing and bonding the inner surfaces of the lb.
A postcard 8 as shown in the figure will be manufactured.

In this case, since the heat bonding is performed at a low temperature of about 90° C., the synthetic resin layer 5 made of ionomer hardly softens at this temperature, and therefore,
The facing synthetic resin layers 5.degree. 5 are bonded to each other with an appropriate adhesive force that allows them to be peeled off later.

Therefore, the sheet pieces 1a and 1b can be peeled off from each other very easily and smoothly without any resistance.

Next, FIG. 5 shows another embodiment, (a) is a cross-sectional view,
(b) shows a front view of the unfolded state.

In this embodiment, the postcard body l consists of three sheet pieces 1
a, lb, and lc, and the sheet piece 1c on the other edge side is folded against the central sheet piece 1b to form a synthetic resin layer 4.
．． 5, and further sheet piece 1a on the side edge side
is folded against the sheet piece IC on the other side edge side and adhered via the synthetic resin layer 4.5.

When the package is opened, the three sides of each sheet piece 1a, lb, and lc are exposed as the printed display section 3, as shown in FIG. 5(b).

Therefore, there is an advantage that the amount of information printed and displayed can be increased compared to the above embodiment.

Next, FIG. 6 shows a postcard as another example, (a)
(b) shows a cross-sectional view, and (b) shows a front view of the unfolded state.

In this embodiment, the postcard body is folded into four.

That is, the sheet piece 1a is folded toward the sheet piece lb side, and the sheet piece 1c is folded toward the sheet piece ld side, and these are bonded together via the synthetic resin layers 4 and 5.

In this embodiment, since there are four print display surfaces, there is an advantage that the amount of information can be further increased.

Furthermore, four sheet pieces 1alb as shown in FIG. 6,
The postcard consisting of Ic and ld can also be used as a return postcard as shown in FIG. 7, for example.

In addition, the postcard body 1 can be folded in two, three, four, etc.
The type is not critical, and therefore the number of sheet pieces is not limited either.

Further, in the above embodiment, the postcard body 1 is constructed by consecutively connecting and bending each sheet piece, but the present invention is not limited to this. For example, two or more sheet pieces may be formed separately, and the separate sheet pieces may be formed separately. The postcard body 1 may be constructed by pasting together sheet pieces. In short, the postcard body 1 only needs to be composed of at least two sheet pieces, whether they are integral or separate.

Further, in the above embodiment, an ionomer was used as the material for the inner surface side synthetic resin layer 5 that can be thermally bonded so as to be peelable, but the material for this synthetic resin layer 5 is not limited to this, and for example, Ethylene-vinyl acetate copolymer resin,
Ethylene-acrylic acid copolymer resin, ethylene-acrylic acid copolymer resin.

Ethylene-ethyl acrylate copolymer resin, ethylene-
They may be methacrylic acid copolymer resins, ethylene-methyl methacrylate copolymer resins, etc., and furthermore, Atmer (product name: Mitsui Petrochemical), Modic (product name: Mitsubishi Yuka), Sumilink (Sumitomo chemistry).

Furthermore, as a synthetic resin film consisting of such two synthetic resin layers 4.5, for example, TOCELLO CMPS
Film (special sealant film) [Higashi Shichiguchi Chemical ■]
It is also possible to use .

The point is that the synthetic resin layers 5, 5 can be thermally bonded to each other in the polymerized state of the sheet pieces, and that the sheet pieces can be peeled off after adhesion, and that information such as characters can be displayed, and that information can be displayed. It is only necessary that the material is made of a synthetic resin that does not cause transfer even after the sheet pieces 1a and 1b are peeled off.

Further, in this embodiment, a synthetic resin made of polypropylene was used as the outer synthetic resin layer 4, but the material of the outer synthetic resin layer 4 is not limited to this, for example, polyethylene 1 polyester, Any synthetic resin such as polystyrene or polyamide synthetic resin can be used.

Note that two layers of synthetic resin on the inner side and the outer side are laminated in advance with this synthetic resin layer 4 on the outer side, and the two layers of synthetic resin are attached to the paper via the synthetic resin layer on the outer side. This has the advantage that operations for forming the postcard body, such as laminating and pasting, can be easily performed, but the synthetic resin layer 4 on the outer surface side is not essential to the present invention.

Further, in the postcard manufacturing method of the above embodiment, a postcard-forming paper having a size four times the size of a postcard is used, and this is cut into two pieces, and the cut postcard-forming pieces are folded in two. However, the method for manufacturing postcards is not limited to this, and for example, a long sheet of continuous form may be used.

In the present invention, "thermal adhesion" means adhesion by heat, and excludes a state where the film is completely welded and cannot be peeled off. In short, if it is possible to peel off, it means that one part of the film to be bonded There is no limitation as to whether or not the portion is in a dissolved state.

Furthermore, in the above embodiment, the printed display is printed on the inner side of the sheet piece for so-called direct mail, but the use of postcards is not limited to such direct mail. It may also be used for notifications such as. In this case, characters and the like are printed on the inner surface of the sheet piece using a computer or the like.

Furthermore, although the above embodiment describes the case of using it for postcards, it is also possible to use it for sealed letters, for example.
All communicable communication bodies are subject to the present invention.

Although the present invention is primarily intended for use in business applications such as direct mail and character printing as described above, it is not necessarily limited to business use, and may be used for general household use. Postcards also fall within the scope of the present invention.

Furthermore, in each of the above embodiments, the entire inner surface of the sheet piece is bonded, but it is not necessarily necessary that the entire surface is bonded. A non-permanent adhesive may also be provided.

Furthermore, adhesion may be done by heating simultaneously during polymerization, or after polymerization, or by applying pressure after polymerization and heating, and the procedure is not limited.

Furthermore, printing is not limited to the printers mentioned above.
It is also possible to display the information by printing or the like.

(Effects of the Invention) As described above, the present invention has the advantage that the synthetic resin layer provided on the inner surface of the sheet piece can be thermally bonded at a heating temperature of 110"C or less, so that the thermal bonding is easy. Even later, the synthetic resin layers can be peeled off from each other, and eventually the sheet pieces can be peeled off from each other easily and smoothly.

Therefore, there is no need to perform treatments such as roughening the surface of the synthetic resin layer as in the conventional postcards, and therefore there are no fixed restrictions on roller extrusion speed, roller pressure, heating temperature, etc., as in the conventional postcards. There is no need to set it under specific conditions.

As a result, since the bonding work can be performed at a heating temperature of 110 degrees Celsius or lower as mentioned above, the water and humidity originally contained in the paper evaporates, causing the paper material itself to deteriorate. Moreover, since the extrusion speed of the roller is not limited, the speed can be significantly faster than before, thus improving the work efficiency for postcard manufacturing, and furthermore, the roller pressure is also not limited. All of the drawbacks of the conventional paper have been overcome, such as by lowering the roller pressure to prevent the paper from curling.

By the way, in the present invention, for example, the extrusion speed of the roller for heating and pressurizing can be made much faster than the conventional method at 25 m/min, and the roller pressure can be lowered to 1) cg/c. Ta.

[Brief explanation of drawings]

FIG. 1 shows a postcard as an example, in which (a) is a front view, (b) is a rear view, and (c) is an enlarged cross-sectional view taken along line A-A of (a), with the middle omitted at %91. Figure 2 shows the peeling state of the sheet piece, (A) is a front view;
(B) is an enlarged sectional view taken along line B-B in (A) with the middle omitted. 3 and 4 are diagrams showing a postcard manufacturing method as an example, and FIG. 3(a) is a front view of postcard forming paper;
(B) is a rear view, (C) is an enlarged sectional view of the main part, FIG. 4 (A) is a front view after cutting, and (B) is a rear view of the same. FIG. 5 shows a postcard of another embodiment, in which (a) is an enlarged sectional view with the middle omitted, and (b) is a front view of the unfolded state. FIG. 6 shows a postcard of another embodiment, in which (a) is an enlarged sectional view with the middle omitted, and (b) is a front view of the unfolded state. FIG. 7 shows a postcard as another embodiment, in which (a) is a front view and (b) is a back view.

Claims (1)

[Scope of Claims] 1. A synthetic resin layer 5 is provided on the inner surface of a communication body 1 such as a postcard or envelope made of at least two sheet pieces, and the at least two sheet pieces are formed on the synthetic resin layer. A communication body such as a postcard or a sealed letter, which is folded and overlapped with the surface provided with 5 as the inner side, and the synthetic resin layers 5 facing each other are thermally bonded to each other in a peelable manner by overlapping the sheet pieces. In, the synthetic resin layer 5 is
A communication body such as a postcard or a sealed letter, characterized in that it is made of a synthetic resin that can perform the releasable thermal bonding at a heating temperature of 110° C. or lower. 2. The postcard according to claim 1, wherein the synthetic resin constituting the synthetic resin layer 5 is an ionomer. 3. The postcard according to claim 1, wherein the synthetic resin constituting the synthetic resin layer 5 is an ethylene-vinyl acetate copolymer resin. 4. The sheet piece of the communication body 1, such as a postcard or envelope, which is made up of at least two sheet pieces to which the transparent synthetic resin layer 5 has been pasted on the inner surface side, is attached to the sheet piece to which the synthetic resin layer 5 has been pasted. It is characterized in that it is manufactured by folding the sheet pieces with their surfaces facing the inner side and overlapping them, and by overlapping the sheet pieces, the mutually facing synthetic resin layers 5 are thermally bonded in a peelable manner at a heating temperature of 110° C. or lower. A method of manufacturing communication materials such as postcards and sealed letters.