JP2886441B2 - Film envelope and method of manufacturing film envelope - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film envelope for mailing and an improvement in a method of manufacturing the film envelope.

[0002]

2. Description of the Related Art Hitherto, the above-mentioned film envelopes are known as shown in FIGS. 13 (a) and 13 (b). That is, the film envelope 21 is formed by polymerizing the synthetic resin film sheet 21a with the paper sheet 21b, and bonding the three edges of the side edges 22a, 22b and the bottom edge 22c of both sheets to the adhesive 23.
It is formed by adhering through a hole.

[0003]

The film envelope 21 as described above is generally made of a business form system, that is, a long paper sheet having marginal punch holes formed on both sides of a roller having sprockets on both sides. On one hand, a long synthetic resin film sheet is wound around another roller, and the paper sheet and the film sheet are pulled out, and in a transfer process of both, adhered to a predetermined position on the paper sheet side. It was manufactured by applying an agent, bonding the paper sheet and the film sheet at the position of the adhesive, and cutting at the position.

Accordingly, the film sheet 21a and the paper sheet 21
Since the adhesive 23 is applied to the paper sheet 21b side when the adhesive b is bonded, the adhesive 23 may bleed into the paper and the width of the bonded portion may be widened (see FIG. 13A). Normally, since the size of the envelope is set to the standard size, a fatal problem has arisen as an envelope in which the width of the storage portion becomes narrower when the width of the adhesive portion increases.

[0005] When the width of the adhesive portion is set to be narrow from the beginning in consideration of the amount of bleeding, the adhesive strength is reduced. There was a risk of inviting.

Further, when the adhesive 23 is applied to the paper sheet 21a, the paper sheet 21a is liable to curl due to the moisture of the adhesive 23, and the appearance of the envelope is deteriorated.

Further, since a long sheet of paper is wound around the above-mentioned roller, and the sheet is pulled out and bonded to a film wound around another roller, the sheet is manufactured. This may cause dimensional errors in the manufactured envelopes, making it impossible to manufacture envelopes with the specified dimensions. However, the inability to manufacture envelopes in accordance with standard dimensions in this way has been a fatal problem because the standard dimensions of envelopes are determined by the Postal Law and the like.

Further, in the case of manufacturing by the business form method as described above, the width of the paper sheet is necessarily limited to the width of the printer, and the width of a plurality of envelopes may not be secured. . Therefore, the efficiency of the manufacturing operation is not always good, and as a result, the manufacturing cost cannot be sufficiently reduced.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a film envelope in which the dimensions of the envelope accommodating portion and the envelope are constant and the adhesive strength is good. It is assumed that.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem.
The synthetic resin film sheet 11 provided with the adhesive 2
Pre-manufactured and stocked, then the synthetic resin film
The sheet 11 and the paper sheet 12 are superposed, and both sheets 11, 12
At a predetermined position where the heat-sensitive adhesive 2 is provided,
After thermocompression bonding from the side of the
Cut and made of film with three side edges thermally bonded
The envelope body 1 is slightly bent toward the other piece 1b.
The present invention is characterized in that an envelope formed in the above is manufactured.

[0011]

[0012]

According to the present invention, when the two pieces 1a and 1b of the envelope body 1 made of film and paper are bonded as described above, the heat-sensitive adhesive 2 is applied and bonded to one side made of the film. Therefore, the width of the adhesive portion can be formed to be constant without the adhesive bleeding into the paper, and the width of the envelope body 1 can be formed accurately and uniformly.

Further, since the heat-sensitive adhesive 2 is used, the paper sheet 15 does not seep into water, and therefore does not curl or deform.

Further, since the two pieces 1a and 1b are bonded by thermocompression bonding using the heat-sensitive adhesive 2, an envelope having a high bonding strength can be manufactured.

Further, when the two pieces 1a and 1b of the envelope body 1 are bonded by thermocompression bonding from one side made of a film, the bonded end is formed to be slightly bent to one side. Therefore, the film envelope is formed so that the film and paper pieces 1a and 1b do not adhere to each other. As a result, the opening operation of the envelope main body 1 can be easily performed.

Furthermore, a heat-sensitive adhesive for the film sheet 11
If the surface of the portion to which 2 is applied is subjected to corona discharge treatment, the surface of the film sheet 11 becomes rough, so that the adhesive is easily attached, and as a result, the adhesive strength between both pieces 1a, 1b is also good. Become.

[0017]

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

Embodiment 1 First, the structure of a film envelope will be described. In FIG. 1 and FIG. 2, reference numeral 1 denotes an envelope body which is formed by thermocompression-bonding three sides of both side edges 2a, 2b and a bottom edge 2c of both pieces 1a, 1b via a heat-sensitive adhesive 2. is there.

One piece 1a of the envelope body 1 is made of paper,
The other piece 1b is made of a synthetic resin film such as a stretched polypropylene, and the surface of the other piece 1b is provided with a printing surface 4 on which characters and pictures for advertisement etc. are applied by gravure printing.
Is formed.

The piece 1a is provided so as to extend from an opening 5 formed in the upper part of the envelope body 1, and a sealing piece 3 is formed.

Since the three sides of the two pieces 1a and 1b of the envelope body 1 are thermocompression-bonded from the other piece 1b of the film, as shown in FIG. , 2b
Are formed slightly bent toward the other piece 1b, and both pieces 1a, 1b
The gap is formed without close contact.

An adhesive 6 is applied to the periphery of the opening 5 on the surface of the other piece 1b. When the sealing piece 3 is bent toward the other piece 1b and sealed, the adhesive 6 is applied. As a result, the sealing piece 3 is adhered, and the envelope body 1 can be sealed.

Next, a method of manufacturing the film envelope 7 having the above configuration will be described.

First, a film sheet 11 is prepared. As shown in FIG. 4, the film sheet 11 is a film sheet 11 made of stretched polypropylene whose width in the short direction is equal to two in the longitudinal direction of the film envelope. One surface of the sheet 11 is subjected to a surface treatment by corona discharge treatment.

Next, as shown in FIG. 5, a character pattern or the like is printed on one side of the surface-treated film sheet 11 by gravure printing to form a printing surface 4, and at the same time, EVA is placed at a predetermined position A. A system heat-sensitive adhesive 2 is applied. Here, the predetermined position A is a position where a gap is provided between a substantially central portion of the film sheet 11 in the longitudinal direction and a length of the film envelope 7 in the transverse direction in a direction orthogonal to the central portion, that is, the film envelope 7 When the bottom edge 2C and both side edges 2 are formed
a, 2b.

Further, the adhesive 6 is also applied to a predetermined position on the other surface of the film sheet 11. The predetermined positions are both side edges of the film sheet 11 near the opening when the envelope body 1 is formed.

As described above, the heat-sensitive adhesive 2 and the printing surface 4 are provided on the film sheet 11, and such a film sheet 11 can be manufactured in advance and stocked.

At the time of envelope bag making, the printing surface 4 is applied and the heat-sensitive adhesive 2 is applied as described above, and the stocked film sheet 11 is transferred.
As shown in FIG. 6, the film sheet 11 on which the printing surface 4 is formed is superimposed with the paper sheet 12 so that one side of the film sheet 11 becomes an inner surface.

At this time, the width of the paper sheet 12 is a film sheet.
11 is formed slightly wider than the width of the paper sheet 12, and when the film sheet 11 is superimposed on the paper sheet 12,
The two sheets 11, 12 are superposed such that the sheet is projected.

Then, the polymerized sheets 11 and 12 are placed in a predetermined position A where the heat-sensitive adhesive 2 is applied to a film sheet.
The two sheets 11, 12 are bonded by thermocompression bonding from the 11 side.

At this time, since the film sheet 11 is thermocompression-bonded from the film sheet 11 side, the film sheet 11 and the paper sheet 12 are subjected to heat and pressure, so that the side edges of the film sheet 11 and the paper sheet 12 are moved toward the film sheet 11 side. It becomes slightly bent.

Thereafter, as shown in FIG.
To form a film envelope 7 in which one piece 1a of the envelope body 1 is made of paper and the other piece 1b is made of a film. Furthermore, as described above, the film sheet 11 is narrower than the paper sheet 12,
Because both sheets were superposed with the paper sheet 12 protruding,
The protruding portion is formed as a sealing piece 3.

When such a film envelope 7 is used, the adhesive 6 is also applied to the outer surface side of the film sheet 11. Therefore, when the film envelope 7 is sealed, the sealing piece 3 is used.
Can be easily sealed by bending to the film side and thermocompression bonding.

Further, since the sealing piece 3 is formed by extending the paper sheet 12, it is easy to handle at the time of the sealing operation, and is particularly suitable for the enclosing and sealing operation by a machine.

Further, since the three end portions of the envelope body 1 are thermocompression-bonded from the other piece 1b side of the envelope body 1 made of a film and adhered to the other piece 1b side, the opening 5 is easily formed. The sealing work can be further facilitated.

Further, the step of providing an adhesive to the film sheet 11 while performing gravure printing and the step of transferring the film sheet 11 and the paper sheet 12 to bond and cut the two are performed in separate steps. It is possible to stock a long film sheet that is gravure-printed and provided with an adhesive, and the film sheet can be taken out as needed, transported together with a paper sheet, and bonded for use. Therefore, printing and adhesive application is performed by a printing company,
The final envelope manufacturing operation can be performed by a bagmaker.

In the above embodiment, the step of providing an adhesive to the film sheet 11 while performing gravure printing, the step of transferring the film sheet 11 and the paper sheet 12 and bonding them together,
Although the step of cutting and the step of cutting are performed in separate steps, this operation can be performed continuously.

In the above embodiment, a film made of stretched polypropylene is used as the film sheet 11. However, the type of the film is not limited to this. For example, a film of polyethylene terephthalate, polypropylene, polyethylene or the like can be used.

Further, in the above embodiment, the sealing piece 3 is formed by extending the piece 1a side of the envelope main body 1 made of paper above the opening 5, so that the above-described preferable advantages are obtained. Alternatively, the sealing piece 3 may be formed by extending the other piece 1b side of the film upward from the opening 5.

Further, in the above-described embodiment, printing of a character pattern or the like is performed on the film. However, the printing performed on the film is not limited to this. For example, as shown in FIG. A window 16 may be formed, and the inside of the envelope may be concealed by performing printing on portions other than the window 16, and further printing may be performed on the entire film surface without forming the window 16, and the envelope may be formed. The inside may be hidden.

Further, in the above embodiment, the sealing piece 3 was adhered by applying an adhesive 6 to the periphery of the opening 5 on the outer surface of the other piece 1b made of a film. The adhesive 6 may be a heat-sensitive adhesive, Any kind of adhesive such as water glue may be used, and the sealing may be performed by means of an adhesive tape or the like without applying the adhesive.

In the above embodiment, an EVA-based adhesive was used as the heat-sensitive adhesive 2. However, the heat-sensitive adhesive 2 is not limited to this. Does not matter.

Further, in the above embodiment, since the corona discharge treatment is applied to one side of the film which is the surface to be bonded to the paper, a favorable effect that the bonding strength between the paper and the film is further improved can be obtained. However, such a corona discharge treatment is not an essential condition for the present invention. In addition to the corona discharge treatment, it is also possible to perform a roughening process or the like.

[0044]

Embodiment 2 In this embodiment, as shown in FIGS. 9A and 9B, one piece 1a is made of a sheet made of paper and the other piece 1b is made of synthetic resin, as in the first embodiment. both pieces 1a of the envelope body 1 made of manufacturing the film, the heat-sensitive adhesive 2 on three sides edge of the 1b
Envelope 7 formed into a bag shape by thermocompression bonding through
One piece 1a of the envelope body 1 is extended from the opening 6 to form a sealing piece 3. Further, a piece of paper 9 is adhered to the vicinity of the opening of the other piece 1 b made of a film via an adhesive 8.

When the film envelope 7 having such a configuration is used, when the sealing piece 3 is folded to the other piece 1b side and bonded and sealed, the paper piece 9 and the paper piece 1a are bonded. Therefore, an adhesive such as a simple water glue can be used without using a heat-adhesive adhesive as in the first embodiment.
Various adhesives can be used, and the effect of facilitating adhesion can be obtained.

In addition to bonding the paper piece 9 to the other piece 1b of the envelope body 1 with the adhesive 8, for example, as shown in FIG.
As shown in (a), even if the synthetic resin layer 10 such as polypropylene is provided on the back surface of the paper piece 9 and the synthetic resin layer 10 and the other piece 1b are thermally welded, the paper piece 9 is bonded to the other piece 1b. Good.

Further, in addition to bonding the paper piece 9 to the other piece 1b, as shown in FIG. 10B, a printing surface 14 is formed near the opening 5 near the opening 5 of the other piece 1b by ink so that the portion is formed. Even when the surface is roughened, the same effect that the film surface near the opening 5 becomes rough and can be easily bonded by various adhesives is obtained.

Embodiment 3 In this embodiment, as shown in FIGS. 11 (a) and 11 (b), the three sides of the two pieces 1a, 1b of the envelope body 1 are the same as those in the above-mentioned Embodiments 1 and 2. The film envelope 7 is formed into a bag shape by thermocompression-bonding the portion with a heat-sensitive adhesive 2, and a piece 1 a of the envelope body 1 is extended from the opening 6 to form a sealing piece 3. Like the other piece 1b made of film, the entire face of the piece 1a is also printed for advertisement. And
An address address field 13 is provided on the outer surface of the sealing piece 3.

In the case of using the film envelope 7 having such a configuration, the address and the like are written on the sealing piece 3. Therefore, in addition to the effects of the first embodiment, both ends 1 of the envelope body 1 are used.
Printing for publicity and advertising can be performed on a and 1b, and the effect of increasing the space in which printing can be performed is obtained.

Embodiment 4 As shown in FIGS. 12A and 12B, the film envelope 7 of this embodiment has the two pieces 1a and 1b of the
A paper sheet 14 is adhered to the outer surface of the other piece 1b of the envelope main body 1 on which the printing surface is provided with the printing by an adhesive. On the surface of the paper sheet 14, there is provided an address address column 13 for writing an address address and the like.

When the film envelope 7 having such a configuration is used, as in the case of the third embodiment, printing for advertisement can be performed on both sides of the film envelope 7 and the envelope 3 can be printed. Even when the address is not enough to be written on the sealing piece 3 due to the small area, the effect of being able to write on the surface of the paper sheet 14 is obtained.

[0053]

As described above, according to the present invention, since the heat-sensitive adhesive is provided on the other side of the envelope body made of a film and bonded to one piece made of paper, the adhesive does not bleed, As in the case of the film envelope, the width of the adhesive portion does not spread and the width of the adhesive portion does not spread so that the width of the adhesive portion can be made constant. Therefore, an effect is obtained that the size of the storage section of the envelope body can be kept constant.

Further, since the two pieces are bonded by thermocompression bonding using a heat-sensitive adhesive, the paper sheet does not curl or deform due to the moisture of the adhesive as in the prior art and has a good appearance. A film envelope can be formed.

Further, since a film envelope is manufactured using a film to which an adhesive has been applied in advance, the adhesive is applied when the adhesive is applied to a film wound around a roll as in a conventional business form system. Thus, there is obtained an effect that the envelope can be manufactured according to the standard size without shifting the position where the printing is performed.

Further, unlike the conventional business form system, since the width of the film sheet or paper sheet is not limited by the printer, a sheet having a width of a plurality of sheets can be used at a time, and the productivity is improved. The effect is also obtained.

Further, since a heat-sensitive adhesive is used, a strong film envelope having high adhesive strength and no damage from the bonded portion can be manufactured.

[0058] Further, when bonding the two pieces of the envelope body, for bonding by thermocompression bonding from a side consisting of a film, the end portion adhered is formed slightly bent to one side,
The film envelope can be formed in a state where both pieces of film and paper do not adhere to each other. Therefore, the opening can be easily opened, and particularly, the effect of facilitating the encapsulation operation by a machine can be obtained.

Further, when the surface of the film sheet to which the heat-sensitive adhesive is applied is subjected to a corona discharge treatment, the surface of the film sheet facing the paper sheet becomes rough, so that the adhesive is adhered. This makes it easier to produce a film envelope with even better adhesive strength.

[Brief description of the drawings]

FIG. 1 is a front view of a film envelope as one embodiment.

FIG. 2 is an end view taken along line AA of FIG. 1;

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a front view showing a step of performing a surface treatment on the film sheet.

FIG. 5 is a front view showing a step of printing on a film sheet.

FIG. 6 is a front view showing a step of polymerizing a film sheet and a paper sheet.

FIG. 7 is a front view showing a step of cutting both sheets.

FIG. 8 is a front view of a film envelope as another embodiment.

FIG. 9A is a front view of a film envelope of another embodiment,
(B) is an end view taken along line CC of (A).

FIG. 10A is an end view of a film envelope of another embodiment.
(B) is an end view of a film envelope of another embodiment.

FIG. 11A is a rear view of a film envelope of another embodiment,
(B) is a front view showing a state in which the film envelope of another embodiment (A) is sealed.

FIG. 12 (a) is a front view of a film envelope of another embodiment,
(B) is an end view taken along line DD of (A).

FIG. 13A is a front view of a conventional film envelope,
(B) is an end view taken along line EE of (A).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Envelope main body 1a ... One piece 1b ... Other piece 2 ... Heat sensitive adhesive 3 ... Sealing piece 4 ... Printing surface 11 ... Film sheet 15 ... Paper sheet

Claims (1)

(57) [Claims] 1. A heat-sensitive contact at a predetermined position while printing is performed.
The synthetic resin film sheet (1) provided with the adhesive (2)
1) is previously manufactured and stocked, and then the synthetic resin
Lum sheet (11) and paper sheet (12) are polymerized
(11) and (12) are provided with the heat-sensitive adhesive (2).
At a predetermined position, the heat is applied from the film sheet (11) side.
After crimping, cut at the predetermined position, three side edges
Of the envelope body (1) consisting of a film which is thermally bonded
(1b) Formed to be slightly bent toward the side
Manufacturing envelopes characterized by manufacturing envelopes
Law.