JPH0354040Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field] The present invention relates to a double envelope.

[Conventional technology]

Double envelopes have traditionally been used as envelopes for registered mail. As shown in FIG. 11, this double envelope consists of an inner envelope 31, an outer envelope 32, and a lower lid 33 attached to the outer surface of the inner envelope 31. The inner envelope 31 and outer envelope 32 used here are the first
As shown in FIG. 2, the bag is made into a rectangular bag by pasting the center and bottom of the back surface together, and has an opening on one side and lids 31a and 32a to close the opening. 1st
To manufacture a double envelope with the structure shown in Fig. 1, the inner envelope 31 and the outer envelope 32 are manufactured separately in advance, the inner envelope 31 is inserted into the outer envelope 32, and the outer envelope 32 and the inner envelope 31 are manufactured separately. and were attached to each other at a suitable position (for example, on a part of the back side of the envelope).
Note that the lower lid 33 may be attached to the outer envelope 32 before or after the inner envelope 31 is inserted.

To seal the double envelope shown in Figure 11, open the bottom lid 3.
3, put the lid 31a on the inner envelope 31, paste the lower lid 33 on top of it, and then put the outer envelope 3 on top of it.
The operation of attaching the outer lid 32a in step 2 was performed.

[The problem that the idea attempts to solve]

However, when manufacturing such conventional double envelopes, it is necessary to insert the inner envelope into the outer envelope and paste the outer envelope and inner envelope together. There were problems in that the work was difficult to automate, required manual labor to manufacture, and was costly. Also, to seal, use the lid 3.
It is necessary to apply glue to each of the three lids, 1a, the lower lid 33, and the lid 32a, and paste them three times alternately, which is troublesome.

The object of the present invention is to provide a double envelope that can be manufactured continuously by machine and that is easy to seal.

[Means to solve the problem]

The double envelope of the present invention, which was created to solve the above problems, includes an outer envelope forming sheet that forms an outer envelope by folding in half and joining the peripheral edges, and a An adhesive layer applied to the inner peripheral edge, a release paper pasted on the adhesive layer, and an inner envelope connected or pasted to the other side when the sheet is folded in half, the sheet being folded in two. It is characterized by having an inner envelope having a size that fits inside the outer envelope when folded to form the outer envelope, and having an opening and a lid on one side.

[Effect]

In the double envelope with the above structure, after putting the contents such as a letter inside the inner envelope and putting the lid on, the outer envelope forming sheet is folded in half so that the inner envelope is sandwiched between the inner envelope and the adhesive applied to the sheet. By peeling off the release paper attached to the adhesive layer and overlapping the folded parts, the adhesive layer can join the edges of the folded sheets to form an outer envelope. Can wrap envelopes. In this way, a double envelope with a completely double structure can be formed. Furthermore, in the completed double envelope, the outer envelope forming sheet is placed on the lid of the inner envelope with the inner envelope's opening closed, so that the opening of the inner envelope is reliably sealed.

The double envelope of this invention has a sheet for forming the outer envelope,
Since the inner envelope is attached, and an adhesive layer and release paper are also attached, during manufacturing, a long sheet that serves as the outer envelope forming sheet is continuously run, and the sheets are placed one after another on top of it. It can be manufactured by attaching an inner envelope, applying an adhesive layer, pasting a release paper, and finally punching out a predetermined shape, and can easily be manufactured continuously using a machine.

〔Example〕

Hereinafter, preferred embodiments of the present invention shown in the drawings will be described in detail.

FIG. 1 is a perspective view showing an embodiment of the double envelope of the present invention, and FIG. 2 is a sectional view thereof. The double envelope 1 has an inner envelope 2 and an outer envelope forming sheet 3. The sheet 3 is made of a material that can be folded into two, such as paper or film, and has a fold line 5 formed in the center by printing or creasing. One part 3 divided by fold line 5
The inner surface of A (the inner surface when the sheet 3 is folded along the fold line 5) is coated with an adhesive layer 6 at least on its peripheral edge, and a protective release paper 7 is temporarily pasted thereon. The release paper 7 does not need to have the same shape as the adhesive layer 6, and may have the same shape as the portion 3A of the sheet 3. The inner envelope 2 is connected to the end of the other portion 3B of the sheet 3 divided by the fold line 5. More specifically, the inner envelope 2 is made by overlapping the paper 9 on the extension part 3C of the part 3B of the sheet 3,
It is formed by pasting together three sides of the outer periphery with glue 10. Fold lines 11 and 12 may be formed by printing, creasing, etc. between the inner envelope 2 and the portion 3B of the sheet 3 and also at the lid of the inner envelope 2.

In the double envelope 1 having this structure, a long sheet forming the sheet 3 is continuously run, necessary printing, creasing, etc. are performed on the running sheet, and the adhesive layer 6 and glue 10 are applied. On top of that, release paper 7, paper 9
It can be manufactured continuously by machine by pasting the material and finally punching it into a predetermined shape.

In addition, in the double envelope 1 having the above structure, the structure and size of the inner envelope 2 are not limited to those shown in the drawings.
Various changes are possible. For example, instead of providing the opening of the inner envelope 2 at the side edge, the opening of the inner envelope 2 may be provided at the top edge, or the opening of the inner envelope 2 may be
You may make changes such as making the vertical length of the sheet 3 the same as that of the portion 3B of the sheet 3. Furthermore, instead of making the inner envelope 2 using a part of the sheet 3, the inner envelope 2 may be made completely separately from the sheet 3 in any desired structure and shape, and then connected to the sheet 3. Further, the inner envelope 2 is not limited to being connected to the end of the portion 3B of the sheet 3, but may be attached to the inner surface of the portion 3B of the sheet 3 as shown in FIG. Inner envelope 2 to sheet 3
If the inner envelope 2 is not made using a part of the sheet 3, the inner envelope 2 will be made separately and pasted onto the sheet 3. You can do it one after another. 1st
The structure shown in the figure is preferable because it allows the formation of the inner envelope 2, the application of the adhesive layer 6 to the sheet 3, and the application of the release paper 7 to be performed continuously in one piece of equipment.

Next, how to use the double envelope 1 will be explained. The double envelope 1 is sold or distributed in an open state as shown in FIGS. 1 and 3 or in a folded state as shown in FIG. The user puts cash, letters, etc. into the inner envelope 2, closes the lid, and then stacks it on the inner surface of the portion 3B of the sheet 3 as shown in Figure 5 (this operation is not necessary for the double envelope 1 in Figure 3). ), peel off the release paper 7 on the part 3A to expose the adhesive layer 6, and overlap the part 3A on the part 3B and the inner envelope 2. Thus, as shown in FIG.
The edges are adhered with the adhesive layer 6 to form an outer envelope, and the inner envelope 2 is sealed inside to form a double-walled envelope, which is mailed in this state. If necessary, a paper seal may be attached to each side joined by the adhesive layer 6, so that it can be easily determined whether or not the package has been opened during mailing.

In the above embodiment, the sheet 3 forming the outer envelope has two parts 3A and 3B of the same shape at the central fold line 5.
Therefore, when the sections 3A, 3B are folded to form the outer envelope, the edges are merely butted together. Instead, as shown in FIG. 7, the portion 3A on which the adhesive layer 6 is applied is made larger in the horizontal and vertical directions than the other portion 3B, and as shown in FIG. After folding, the excess portion 3A' of the portion 3A may be folded back and attached to the outer surface of the other portion 3B. This structure is preferable because the sealing becomes more reliable. Note that the extra portion 3A' may be provided only in either the vertical direction or the lateral direction.

In addition, a special seal structure may be provided at the mutually bonded portions of the folded sheets 3 so that hidden patterns, letters, etc. appear after peeling off, and the hidden patterns, letters, etc. do not disappear even if bonded again. FIG. 9 shows an example of the structure of a special seal formed on a part of the portion 3B of the sheet 3 shown in FIG. 1, and reference numeral 21 is a surface layer formed of a part of the sheet portion 3B. This surface layer 21 is transparent or semitransparent. The surface layer 21 is coated with a hidden character ink layer 22 such as ``opened'' and a solid ink layer 23, and an adhesive layer 24 and a protective film 25 are further provided thereon. The hidden character ink layer 22 and the solid printing ink layer 23 are made of a combination of inks in which the contrast between the two ink layers cannot be visually perceived when viewed from the surface layer side. When the sheet 3 is folded and sealed, the portion 3A of the sheet 3 is adhered to the surface of the protective film 25 via the adhesive layer 6. Here, the bonding force between the surface layer 21 and the hidden character ink layer 22, between the hidden character ink layer 22 and the solid ink layer 23, or between the surface layer 21 and the solid ink layer 23 is determined by the adhesive layer 6. Materials such as ink are selected so that the bonding force is smaller than the bonding force.

If a special seal structure of the above structure is provided, when someone peels off the adhesive layer 6 bonded part of the sheet 3 during mailing, etc., it will cause a problem as shown in any of Fig. 10A, Fig. 10B, or Fig. 10C. , surface layer 21
(Sheet portion 3B) and adhesive layer 24 (joined to sheet portion 3A) are separated, and hidden characters appear. This hidden character will not disappear even if the peeled part is reattached, so it can be easily determined whether the package has been opened or not. Note that instead of forming the special seal structure shown in FIG. 9 as part of the sheet 3, it is also possible to make a label with the special seal structure shown in FIG. 9 and use this label as a sealing paper. That is, if a paper seal having the structure shown in FIG. 9 is pasted across the joint between portions 3A and 3B of the sheet 3 with the protective film 25 facing down, when the paper seal is peeled off, surface layer 2
1 and the adhesive layer 24 peels off, revealing hidden characters,
Even if the peeled part is reattached, the hidden characters will not disappear, so it can be easily determined whether the package has been opened or not.

[Effect of idea]

As described above, the double envelope of the present invention has an adhesive layer 6 and a release paper 7 provided on the outer envelope forming sheet 3, and the inner envelope 2 is connected or attached, so that it is difficult to manufacture the double envelope. does not require the tedious work of inserting one envelope into another and gluing them together, unlike traditional double envelopes, and can be manufactured continuously by machine, making it inexpensive to manufacture. It is. Moreover, since the adhesive layer 6 is provided in advance on the sheet 3 constituting the outer envelope, it has excellent effects such as extremely easy sealing work.

[Brief explanation of drawings]

Fig. 1 is a perspective view of one embodiment of the present invention, Fig. 2 is a sectional view thereof, Fig. 3 is a perspective view of another embodiment of the invention, and Fig. 4 shows the double envelope 1 of Fig. 1. FIG. 5 is a perspective view showing the double envelope 1 in FIG. 1 in the middle of being sealed, FIG. 6 is a perspective view showing the sealed state, and FIG. 7 is a perspective view showing the double envelope 1 in the sealed state. A perspective view of another embodiment, FIG. 8 is a perspective view showing a state in the process of sealing the double envelope of FIG. 7, and FIG. 9 is a special seal structure suitable for use in the double envelope of the present invention. FIG. 10A, FIG. 10B, and FIG. 10C are cross-sectional views showing the state in which the special seal structure of FIG. 9 is removed, respectively. FIG. 11 is a perspective view of a conventional double envelope, and FIG. 12. FIG. 2 is a perspective view showing an inner envelope and an outer envelope constituting the double envelope. 1...Double envelope, 2...Inner envelope, 3...Sheet, 3
A, 3B... Sheet portion, 5... Fold line, 6... Adhesive layer, 7... Release paper.

Claims (1)

[Scope of utility model registration request] An outer envelope forming sheet that forms an outer envelope by folding the sheet in half and joining the peripheral edges, an adhesive layer applied to the inner peripheral edge of one of the sheets when the sheet is folded in half, and an adhesive layer on the adhesive layer. release paper affixed to the
An inner envelope connected to or attached to the other side of the sheet when the sheet is folded in half, the inner envelope being large enough to fit inside the outer envelope when the sheet is folded in half to form an outer envelope, and having an opening on one side. and an inner envelope having a lid.