JPH05309981A - Sealed letter for sealing enclosure - Google Patents

Abstract

PURPOSE:To make an enclosure not to be adhered with an adhesive by a method wherein a tearable synthetic resin film is placed between two pieces of a sheet to be folded into two and the film is adhered with one of the pieces of the sheet and the enclosure is enclosed between the film and another piece of the sheet by adhering the film with the peripheral part of another piece of the sheet. CONSTITUTION:A paper-made sealed letter main body is constituted of two pieces of a sheet 1a and 1b being at least foldable into two and a tearable synthetic resin film is placed between the pieces of the sheet 1a and 1b. The film 8 is adhered with one of the pieces of the sheet 1a and the film 8 is peelably adhered with the peripheral part of another piece of the sheet 1b. In addition, an enclosure is sealed between the film 8 and another piece of the sheet 1b. As the result, there exists no possibility of unprepared adhesion of a paper when printing of an information is performed in a feeding and carrying process for a paper for preparation of enclosing and it is possible to perform manufacturing work of the sealed letter using a long synthetic resin sheet.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealed letter for enclosing an enclosure and a manufacturing method thereof, and more specifically, encapsulation of letters, questionnaire sheets, various information sheets for direct mail, various cards such as cash cards and the like. TECHNICAL FIELD The present invention relates to a sealed letter for enclosing and mailing a product and a manufacturing method thereof.

[0002]

2. Description of the Related Art Conventionally, as an envelope for enclosing this kind of enclosure, for example, Japanese Utility Model Publication No. 3-46935, Japanese Utility Model Publication No. 2-43749.
No., Jitsukaihei 3-124889, etc.

That is, these envelopes are shopping cards,
It encloses various forms such as cash cards, application forms for loans, gift certificates, etc. and mails them.

[0004]

However, these envelopes have a structure in which an adhesive is provided in the peripheral portion of the envelope body for enclosing the enclosed material, and the peripheral portion of the envelope body is adhered via the adhesive agent. In addition to the fact that the information is printed on the main body of the envelope, there is a risk that the adhesive may interfere with the printing of the information, causing trouble in the printing machine. There is a problem that careless adhesion of paper occurs in the process.

Also, in the letter of Japanese Utility Model Publication No. 3-46935, since a sheet made of synthetic resin is interposed, it is assumed that such a sheet is lengthened and is inserted in a continuous sheet for forming an letter. However, the sheet will hinder the cutting process. Therefore, it is difficult to employ the continuous production operation of envelopes using the long sheet for producing envelopes provided with such a synthetic resin sheet.

[0006] Therefore, in the letter of Jikken Sho 3-46935,
Since a synthetic resin sheet of a certain size is used, there is a problem that it becomes difficult to make continuous and automated envelope production.

Further, even when discarding or disposing of the above-mentioned sealed letter, it is not easy to tear the sealed letter by interposing the synthetic resin sheet as described above, and therefore the discarding or disposal cannot be performed easily. It was supposed to be. By the way, for example, if the information printed on the envelope itself is confidential, etc., if it is necessary to cut it into small pieces and discard or dispose of it, you must prepare a cutting instrument such as scissors separately. The work was very troublesome.

The present invention has been made in order to solve the above-mentioned problems, and does not cause inadvertent adhesion of paper during printing of information in the feeding process of paper for producing envelopes. Moreover, even though it is a sealed letter equipped with a synthetic resin sheet, it is possible to manufacture a sealed letter using a long-sized synthetic resin sheet, so that the work can be made continuous and automated, and can be discarded or disposed. The challenge is to provide an easy-to-use envelope.

[0009]

SUMMARY OF THE INVENTION The present invention has been made as a sealed letter for encapsulating inclusions and a method for producing the same in order to solve such problems. The paper envelope body 1 is made up of at least two sheet pieces 1a, 1b that can be folded in at least two, and the sheet pieces 1a, 1b
A rupturable synthetic resin film 8 is interposed, and the film 8 and one sheet piece 1a are bonded together, and the film 8 and the other sheet piece 1b are bonded together at their peripheral portions. Moreover, the film 8 and the other sheet piece
The inclusion is enclosed between 1b.

Further, a feature of the method for producing a sealed letter for enclosing an enclosed material is that a large number of sealed sheet forming sheets 13, ... After inserting the enclosed material between the two folded sheet pieces 1a and 1b, and then inserting the tearable long synthetic resin film 8 between the enclosed material and one sheet piece 1a , The one sheet side 1a and the one side of the film 8 are bonded to each other via the film 8 by heating, and the peripheral portion of the other sheet side 1b and the other side of the film 8 are bonded, and then the length It is to manufacture by tearing the lengthy film 8.

Further, another characteristic of the method for manufacturing an envelope is that it comprises a large number of envelope forming pieces 15 ,.
At least two continuous papers 16 each having a dividing means such as perforations 17 for dividing each continuous paper 16 are placed in a folded state, and a large number of inclusions are provided between the sheet pieces of the at least two folded continuous papers 16 for each envelope forming piece 15. Sequential insertion, and then, a rupturable long synthetic resin film 8 is interposed between the inclusion and one sheet piece, and then the one sheet piece is heated through the film 8 And one side of the film 8 are adhered to each other, the peripheral portion of the envelope forming piece 15 of the other sheet piece is adhered to the other side of the film 8, and then the continuous paper 16 and the long film 8 are attached. This is to manufacture by tearing the envelope forming piece 15 into pieces each having a predetermined size.

[0012]

[Function] At least 2 envelopes for inclusion of the present invention are required.
A tearable synthetic resin film 8 is interposed between two foldable sheet pieces to bond the film 6 and one sheet piece together, and between the film 6 and the peripheral portion of the other sheet piece. Since the encapsulant is adhered between the film 6 and the other sheet piece, the encapsulant is reliably enclosed in the space formed between the film 6 and the other sheet piece, and Since the adhesive exists only between the film 6 and the peripheral portion of the other sheet piece, it does not adhere to the inclusion.

When the envelope sealed with the encapsulated material in this manner is opened, the envelope main body is cut by means such as cutting off one end side of the peripheral portion where the film 6 and the other sheet piece are adhered. Once opened, the inclusions can be easily removed.

Further, in the method of manufacturing a sealed letter for encapsulating an encapsulating material according to the present invention, a step of inserting the encapsulating material between at least two sheet pieces of the main body of the sealed letter or the sheet for forming an envelope, the encapsulating material and one sheet. The sealed letter is manufactured by the steps of inserting the film between the pieces, the step of adhering the film by heating, and the step of tearing the film, and all the manufacturing steps are automatically performed.

In particular, since the film to be interposed is rupturable, it is not necessary to separately prepare a cutter or the like,
The cutting work can be done.

[0016]

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

Embodiment 1 FIGS. 1 to 4 show a sealed letter as one embodiment, FIG. 1 is a front view, FIG. 2 is a rear view, FIG. 3 is an enlarged sectional view taken along the line AA of FIG. 1, and FIG. 1 is an enlarged sectional view taken along the line BB of FIG. 1, FIG. 5 is a front view of a developed state, and FIG. 6 is an enlarged sectional view taken along the line CC of FIG.

In FIGS. 1 to 6, reference numeral 1 is a main body of an envelope made of one sheet of paper, and two sheet pieces formed in a predetermined size.
1a and 1b are arranged in series, and a destination / address display unit 2 is provided on the outer surface side of one sheet piece 1a to display the destination / address by printing, and the outer surface of the other sheet piece 1b. On the side, an advertisement / advertisement section 3 is provided.

Reference numeral 4 denotes an information display section for displaying information to be concealed, which is provided on the inner surface side of the one sheet piece 1a and displays information such as communication text by printing.

The two sheet pieces 1a and 1b are bent through the bent portion 5 so that the information display section 4 is on the inner surface side, and the inner surface side of one sheet piece 1a is ethylene-vinyl acetate. A synthetic resin layer 6 made of a copolymer resin is provided,
Further, an adhesive 7 that can be peeled off to the inner surface side of the synthetic resin layer 6
There is provided a film 8 [trade name: Pyrene film-ET: Toyobo Co., Ltd.] made of biaxially oriented polypropylene that can be torn in one direction through the film.

Further, a heat-bondable and colored part coat adhesive 9 is provided on the periphery of the film 8, and the synthetic resin film 8 and the other sheet piece 1b are interposed via the part coat adhesive 9. Are glued together.

A space 10 is provided between the sheet piece 1b and the film 8 except for the peripheral portion where the part coat adhesive 9 is provided.
Is formed, and in the space portion 10, a notification sheet 11 displaying a transmission sentence and the like is stored.

Reference numeral 13 is a perforation formed on one side edge facing the bent portion 5 of the envelope body 1, and its forming position is set so as to be inside the part coat adhesive 9. ..

In the envelope 12 of this embodiment, the space portion 10 is formed between the sheet piece 1b and the film 8 as described above, and the space portion 10 is formed.
A notification sheet 11 on which a transmitted message or the like is displayed is housed in 10, and the other sheet piece 1b and the film 8 are adhered to each other via a part coat adhesive 9 around the film 8. And the folded portion 5 of the envelope body 1 is positioned so as to be inside the part coat adhesive 9.
Since the perforations 13 are formed on one side edge side that is opposed to the position shown in FIG.
As shown in FIG.
Since 12 is opened, the notification sheet 11 can be easily taken out from the opened one side edge of the envelope body 1 as shown in FIG.

Next, since the piece 1a side of the envelope body 1 and the synthetic resin film 8 are adhered to each other via the peelable adhesive 7, as shown in FIGS. 1a
Can be easily peeled off from the sheet piece 1b, and the contents of the information displayed on the information display section 4 can be read.

Furthermore, even after discarding and discarding the sealed letter after opening, the film 8 interposed in the sealed letter body 1 is a biaxially stretched polypropylene film which can be torn in one direction as described above. By tearing the envelope body 1 in the lateral direction, the envelope body 1 can be easily torn, and can be discarded and disposed of easily.

Embodiment 2 Next, an embodiment of a method for manufacturing a sealed letter for manufacturing a sealed letter having the above-mentioned structure will be described.

First, as shown in FIG. 11, the destination / address display section 2 is provided on the right half on the front side, and the advertisement / advertisement section 3 is provided on the left half.
Is prepared, and as shown in FIG. 12, the envelope forming sheet 13 having the information display section 4 on the back side is prepared.

Next, as shown in FIG. 13, the envelope forming sheet 13 is folded through the folding section 5 so that the information display section 4 is on the inner surface side.

Next, as shown in FIG. 14, the notice sheet 11 is inserted into the folded envelope forming sheet 13.

On the other hand, a synthetic resin layer 6 is provided on one side of a biaxially stretched polypropylene film 8 which can be torn in one direction via a peelable adhesive 7, and a part coat adhesive on the peripheral portion on the other side. Laminated film 14 provided with 9
15 is prepared and wound in advance as shown in FIG. 15, and this is pulled out and the upper side of the notification sheet 11 in the half-folded envelope forming sheet 13 as shown in FIG. 16 and FIG. To insert.

In this case, since the part coat adhesive 9 provided on the peripheral portion of the film 8 is colored, the colored part coat adhesive 9 is read by a separately installed photocell and is transferred by it. The envelope forming sheet 13 and the laminated film 14 are synchronized with each other, and the positions of both are adjusted.

Next, as shown in FIG. 18, the letter-forming sheet 13 in which the long laminated film 14 is interposed is heated and pressed.

At this time, the synthetic resin layer 6 of the laminated film 14
Melts by heating, thereby functioning as an adhesive, and at the same time, the white and opaque synthetic resin layer 6 becomes transparent, and the film 8 can be peeled to the sheet piece 1a side through the synthetic resin layer 6 and the adhesive 7. It will be heat-bonded.

On the other hand, the heating and pressing causes the part coat adhesive 9 to exert its adhesive function, and the part coat adhesive 9
The four peripheral portions of the film 8 and the other sheet piece 1b are adhered to each other through the non-peeling.

Further, the transparent synthetic resin layer 6 does not hinder the reading of characters on the information display portion 4 after opening.

Thereafter, as shown in FIG. 19, the position between the envelope forming sheets 13, ... Of the long laminated film 14 is successively torn to sequentially tear the envelope 12 as shown in the first embodiment.
Will be manufactured automatically and continuously.

In this case, the laminated film 14 interposed in the letter-forming sheet 13 can be torn in the lateral direction.
Since it is made of axially stretched polypropylene, it can be torn very easily by the above-mentioned tearing force.

Therefore, it is not necessary to separately prepare a device for cutting, and it is possible to continuously and automatically perform the postcard production work even if the letter is a sealed letter.

Embodiment 3 This embodiment is another embodiment of the method for manufacturing an envelope.

In this embodiment, the sealed sheet forming sheet 13 of the second embodiment is replaced with a large number of sealed sheet forming pieces 15, ... As shown in FIG. This is different from the second embodiment in that continuous paper 16 in which 15 is continuously provided via perforations 17 is used.

That is, in this embodiment, first, this continuous paper is used.
As shown in Fig. 20, 16 is folded in two in the longitudinal direction,
Each envelope forming piece in the continuous paper 16 that is folded in two
A large number of notification sheets 11 are inserted at positions corresponding to 15 as shown in FIG.

Next, the same laminated film as in Example 2 above.
As shown in FIG. 22, 14 is prepared, pulled out from the wound state, and inserted into the folded continuous paper 16 as shown in FIG. 22 and FIG.

Next, by heating and pressing, the continuous paper 16 and the laminated film 14 are heat-bonded in the same state as in the second embodiment.

After that, the continuous paper 16 is divided into each envelope forming piece 15 through the perforations 17, and the long laminated film 14 is sequentially torn into each envelope forming piece 15 so that the above embodiment is carried out. As in the case of 2, the envelope 12 will be automatically and continuously manufactured.

[0046] Other embodiments As the paper for letter formation, may be a sizing sealed letter forming sheet 13 as described above in Example 2, also in Example 3
It may be a continuous paper 16 having a long shape, such as a fixed size or a long size.

Further, in the above embodiment, the envelope body 1
2 that can be ruptured in one direction as the film 8 inserted inside
Although the axially stretched polypropylene film is used, the type of the film 8 is not limited to the example, and it is possible to use, for example, a uniaxially stretched polypropylene film. The point is that a tearable film is used.

However, in consideration of the waist strength required for processing at the time of manufacturing postcards, the degree of gloss that draws the user's attention at the time of opening, etc., the biaxially stretched polypropylene film rupturable in one direction is The best.

Further, in the above embodiment, ethylene-vinyl acetate copolymer resin is used as the synthetic resin layer 6 for adhering the film 8 to the inner surface side of the envelope body 1, but the material of the synthetic resin layer 6 is also this. Is not limited to
It is also possible to use other synthetic resins. Further, the synthetic resin layer 6 may not be provided, and the film 8 may be directly adhered to the inner surface side of the envelope body 1 via an adhesive.

Further, the form of the envelope body 1 is not limited to the one that can be folded in two as in the above-mentioned embodiment, but a substantially Z-shaped three-folded one or three sheet pieces are inwardly directed toward each other. Further, it may be a three-fold type, a four-fold type, or the like, and the point is that it is a two-fold or more-folded type.

The means for adhering the inner surface side of each sheet piece of the envelope body 1 is also the means for adhering via the synthetic resin layer 6 and the peelable adhesive 7 as in this embodiment, and the part coat adhesive 9 It is not limited to the above means, and other heat bonding means may be used, and further, a bonding means using a so-called cold melt adhesive other than heat may be used.

Further, in the above-described embodiment, the film 8 and the piece 1a of the envelope body 1 are releasably adhered, and the film 8 and the peripheral portion of the other piece 1b of the envelope body 1 are irremovably adhered.
On the contrary, it is also possible to adhere the film 8 and the piece 1a of the envelope main body 1 in a non-separable manner, and to attach the film 8 and the peripheral portion of the other piece 1b of the envelope main body 1 in a separable manner.
In this case, the envelope can be opened simply by peeling off the film 8 and the peripheral portion of the other piece 1b of the envelope main body 1, and there is an advantage that an opening means such as perforations is unnecessary.

Further, in the above embodiment, one piece 1a of the envelope body 1 and the film 8 are peelably adhered to each other, but both pieces 1a and 1b of the envelope body 1 are non-peelable to the film 8. Good. In this case, the envelope body 1 is not peeled off, but the notice sheet 11 is opened from the opened envelope body 1.
Can be taken out.

Further, in the above-mentioned embodiment, the notification sheet 11 is used as the enclosure to be enclosed in the envelope body 1. However, the type of the enclosure is not limited to the notification sheet 11 as described above. It may be a card such as a cash card or a telephone card, or a booklet or the like.

[0055]

As described above, the present invention has at least 2
A tearable synthetic resin film is interposed between two sheet pieces that can be folded, and the film and one sheet piece are bonded together, and the film and the peripheral portion of the other sheet piece are bonded together. Since the inclusion is enclosed between the film and the other sheet piece, the enclosure is surely enclosed in the space formed between the film and the other sheet piece, and also when opened. By opening the sealed letter with a predetermined opening means, it becomes possible to easily take out the enclosed material.

In particular, when the adhesive is provided on both sides of the film itself, it is not necessary to provide the adhesive on the main body of the envelope as in the conventional case, so that a trouble may occur in the printer during information printing. Nonetheless, and there is no risk of inadvertent adhesion of the paper during the paper feeding process.

Further, even after discarding and discarding the sealed letter after opening, since the film interposed in the sealed letter body can be torn in one direction as described above,
When information is displayed on the main body of the envelope separately from the inclusion, the information can be read and then the main body of the envelope can be torn to tear easily, and can be discarded or disposed of easily. ..

As a result, even when confidential information to be concealed is displayed on the main body of the sealed letter, there is an advantage that the confidential state of the information can be maintained.

Further, in the method for producing a sealed letter of the present invention, the step of inserting the enclosed material in the folded sheet for forming a sealed letter, the step of interposing a film between the enclosed material and one sheet piece, and heating The sealed letter is manufactured by the step of adhering and the step of tearing the film, which has an effect that all the manufacturing steps are automatically performed.

In particular, since the film to be interposed is rupturable, it is not necessary to separately prepare a device for cutting such as a cutter, and the cutting operation can be performed. Therefore, the effect that the envelope can be continuously and automatically produced by using the film is achieved without complicating the entire device for producing the envelope.

[Brief description of drawings]

FIG. 1 is a front view of a sealed letter as an example.

[Figure 2] Rear view

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

4 is an enlarged cross-sectional view taken along the line BB of FIG.

FIG. 5 is a front view of a developed state.

6 is an enlarged cross-sectional view taken along the line CC of FIG.

FIG. 7 is a sectional view when opened.

FIG. 8 is a sectional view showing a state in which a notification sheet is taken out.

FIG. 9 is a front view of the envelope when peeled off.

FIG. 10 is an enlarged cross-sectional view of the D-D line in FIG.

FIG. 11 is a front view of a sealed sheet forming sheet for manufacturing a sealed letter.

FIG. 12 is a rear view of the same.

FIG. 13 is a cross-sectional view of a process of folding a letter forming sheet in two.

FIG. 14 is a cross-sectional view of a process of inserting a notification sheet into a folded envelope forming sheet.

FIG. 15 is a schematic side view of a step of inserting a laminated film into a folded envelope-forming sheet.

FIG. 16 is a schematic plan view of the same.

FIG. 17 is an enlarged cross-sectional view of the relevant part.

FIG. 18 is a cross-sectional view of a process of thermally bonding the envelope forming sheet and the laminated film.

FIG. 19 is a schematic plan view of a laminating film tearing step.

FIG. 20 is a schematic plan view of a process of folding a continuous paper in the method for manufacturing a letter- envelope according to another embodiment.

FIG. 21 is a schematic side view of a step of inserting a notification sheet.

FIG. 22 is a schematic side view of the film inserting step.

FIG. 23 is a schematic plan view of the film inserting step.

[Explanation of symbols]

 1 ... Envelope body 6 ... Synthetic resin layer 7 ... Strong adhesive 8 ... Film 9 ... Weak adhesive 13 ... Envelope forming sheet

Claims (7)

[Claims] 1. A paper envelope body 1 comprises at least two sheet pieces 1a and 1b capable of being folded into at least two, and said sheet pieces.
A tearable synthetic resin film 8 is interposed between 1a and 1b, and the film 8 and one sheet piece 1a are adhered to each other, and the film 8 and the other sheet piece 1b are surrounded by a peripheral portion. Is adhered, and the enclosure is enclosed between the film 8 and the other sheet piece 1b. 2. A paper envelope body 1 is composed of two sheet pieces 1a and 1b which can be folded into at least two pieces, and the sheet pieces 1a and 1b.
A tearable synthetic resin film 8 is interposed between 1a and 1b, and the film 8 and one of the sheet pieces 1a are adhered to each other in a peelable manner. A sealed letter for encapsulating an encapsulation, characterized in that the peripheral portions are adhered to each other in a non-separable manner and the encapsulation is enclosed between the film 8 and the other sheet piece 1b. 3. A peelable adhesive 7 is provided on one side of the film 8 facing the one sheet piece 1a through a synthetic resin layer 6, and a peripheral portion on the other side of the film 8 is provided. Is a non-peelable adhesive 9, and is a sealed letter for enclosing an enclosure according to claim 1 or 2. 4. The envelope for encapsulating an enclosure according to claim 1, wherein the synthetic resin layer 6 is made of an ethylene-vinyl acetate copolymer resin. 5. The envelope for enclosing an enclosure according to claim 1, wherein the rupturable film 8 is a unidirectionally rupturable biaxially oriented polypropylene film. 6. A plurality of envelope forming sheets 13, which are composed of at least two sheet pieces that can be folded in at least two, are brought into a folded state of at least two, and an enclosure is placed between the at least two folded sheet pieces 1a, 1b. After inserting, and then inserting a tearable long synthetic resin film 8 between the inclusion and the one sheet piece 1a, the one sheet piece is heated through the film 8. 1a and one surface side of the film 8 are bonded together, the peripheral portion of the other sheet piece 1b and the other surface side of the film 8 are bonded together, and then the long film 8 is cut and manufactured. A method of manufacturing a sealed letter for enclosing a characteristic enclosure. 7. A continuous paper 16 provided with a large number of envelope forming pieces 15, ... And having a dividing means such as perforations 17 for dividing each envelope forming piece 15 into at least two folded states, and at least two of them are folded. A large number of inclusions are sequentially inserted between the sheet pieces of the continuous paper 16 for each envelope forming piece 15, and then,
A long and tearable synthetic resin film 8 is interposed between the enclosed material and one of the sheet pieces, and then the one sheet piece and one surface of the film 8 are heated through the film 8. The above-mentioned envelope forming piece of the other sheet piece while being adhered
The periphery of 15 and the other side of the film 8 are bonded, and then
The continuous paper 16 and the long film 8 are attached to the envelope forming piece.
A method for producing a sealed letter for enclosing an encapsulating material, which is produced by tearing each piece into 15 predetermined dimensions.