JPH0120281Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to envelopes, especially envelopes that are ideal for mailing heavy items such as books and magazines.

(Prior Art) Conventionally, when mailing heavy items such as books and magazines, envelopes made of cardboard have been used to protect the items. These heavy goods envelopes are generally constructed as follows.

That is, the backing paper piece continuous to the lower end of the cover piece is folded along the folding line, and the folding pieces continuous to both sides of the cover piece are folded and fixed to the backing paper piece to assemble an envelope with an open top. When sealing, a sealing piece connected to the upper edge of the cover piece is placed over the backing paper piece and fixed together with glue or adhesive tape.

(Problems to be solved by the invention) The conventional envelopes having the above configuration had the following problems.

First, seals are made by overlapping the sealing piece with a piece of backing paper and fixing it with glue or adhesive tape, but envelopes that store heavy items such as books and magazines must be fixed so that they cannot be easily opened. The stronger the seal, the more time and effort it takes to open it.

Second, when opening the package, the sealing piece is usually separated from the cover piece, or the sealing piece and the cover piece are cut together while being opened. When the upper edge is cut, the cut will be straight. Since only a small opening can be formed with a straight cut, it is difficult to take out the stored items, and in particular, it is even more difficult to take out the envelopes made of cardboard because they are not easily deformed.

Thirdly, the opening hole is either pre-formed or not formed at all, and there is no option to form it arbitrarily as needed depending on the stored items.

This invention was made in view of the current situation, and the purpose of this invention is to provide an envelope that allows easy removal of stored items by forming a large opening even when the envelope is made of cardboard. It is.

(Means for Solving the Problem) In order to achieve the above object, the structure of this invention is as follows.

In other words, in an envelope in which a backing piece is attached to a rectangular cover piece at the lower end via a folding line, folding pieces are attached to both sides of the cover piece, and a sealing piece is attached to the upper end of the cover piece, an opening hole is provided at one end of the sealing piece. On the other hand, the backing paper piece is provided with a substantially U-shaped cut line that opens in one direction of the seal, and the depth of the U-shaped cut line and the height dimension of the seal piece are set. It is almost identical and is made of cardboard.

The substantially U-shaped cut line is preferably formed by a finger hook cut and an L-shaped perforation continuous from both ends of this cut.

Further, it is preferable that the finger-holding cut protrudes from the sealing piece when the seal is sealed.

(Function) By cutting out the L-shaped perforation at the edge of the sealing piece, an opening hole is formed at the corner.

Further, the U-shaped perforation line on the backing paper strip can be easily cut off with bare hands to form a concave opening at the top end of the envelope. Further, since the line parallel to the side edge of the envelope of the L-shaped perforation is the direction of tearing, it is easier to open the envelope.

(Example) Hereinafter, this invention will be described in detail based on an illustrative example.

FIG. 1 is a developed view of the envelope according to this invention before being assembled.

A backing paper piece 10 is connected to the lower end of the cover piece 1 via a folding line 2, folding pieces 4, 4 are connected to both ends of the cover piece 1 via folding lines 3, 3, respectively, and further, A sealing piece 6 is connected to the upper end of the cover piece 1 via a folding line 5.

The cover piece 1 is provided with rectangular folds 1a inside the folding lines 2, 3, and 5, and folds 1b connecting the four corners of the rectangular folds 1a and the four corners of the cover piece 1 are provided, respectively.

The folding pieces 4, 4 are provided with fold lines 7, 7, and the fold lines 7, 7 are provided at approximately equal intervals from the fold line 1a with the fold lines 3, 3 as the center.
Therefore, when assembled into an envelope, the folds 7, 7 are located on the back side and overlap with the fold 1a.

The backing paper piece 10 is provided with a rectangular fold 10a that is parallel to the edge of the cover piece 1 and has approximately the same size as the rectangular fold 1a. Folds 10b are provided to connect the four corners of the sheet and the four corners of the backing paper piece 10.

The folds 1a and 10a allow the envelope to be easily inflated, making it easy to store items.

Further, the backing paper piece 10 is provided with a generally U-shaped cut line 14 that is concavely cut out at the upper edge inside the rectangular fold 10a. This perforation line 14 is formed by a finger-holding cut 12 and an L-shaped perforation 13 continuous from both ends of this cut 12, and its depth is approximately the same as the height dimension of the sealing piece 6. has been done. Therefore, when sealed, the sealing piece 6 overlaps within the U-shaped perforation line 14.

The sealing piece 6 is provided with an L-shaped perforation 8, one side of the L-shaped perforation 8 is parallel to the side edge and reaches the folding line 5, and the other sides coincide with the folding line 5. . Therefore, by cutting the side end portion from the L-shaped perforation 8, an opening hole for checking the contents can be formed when sealing. Further, the sealing piece 6 is provided with a plurality of folds 9 parallel to the folding line 5 to facilitate folding during sealing.

In addition, in the above embodiment, the fold line 1a of the cover piece 1,
1b, folds 7, 7 of folded pieces 4, 4, and backing paper piece 1
The zero folds 10a and 10b may be omitted as appropriate.

Next, a method for assembling and using the envelope according to the above configuration will be explained.

First, in order to assemble the expanded view shown in FIG. 1 into an envelope, the backing paper piece 10 is folded along the fold line 2 and overlapped with the cover piece 1 (see FIG. 2). Next, the folding pieces 4, 4 provided in series on both sides of the cover piece 1 are folded from the folding lines 3, 3, respectively, to form a backing paper piece 10.
Lay them on top of each other and stick them together. Folded piece 4,
4 and the backing paper piece 10 may be fixed together with glue or adhesive tape, and an envelope with the sealing piece 6 side open can be easily formed.

When using the above envelope, store books, magazines, etc. through the opening, cut the edge of the sealing piece 6 from the L-shaped perforation 8, and then insert the sealing piece 6 into the backing paper piece 1.
0 (see Figure 3). By cutting off the edge of the sealing piece 6, an opening hole 15 is formed at the upper corner of the envelope, making it possible to check the contents.

When opening the package, place your finger on the notch 12 and pull upward, and the backing paper piece 10 will be torn apart from the L-shaped perforation 13 with the sealing piece 6 still attached, allowing the top end to be opened in a concave shape. can. In this way, the package can be easily opened with bare hands without using any opening tools such as knives or scissors.

(Effects of the invention) As explained above, the envelope according to this invention can have the following specific effects.

Since an L-shaped perforation is provided at the edge of the sealing piece, an opening hole can be easily formed as required.

Since the backing paper strip has a concave cutout line in the form of a substantially U-shape, it can be easily opened with bare hands by tearing it apart along the cutout line.

Furthermore, since the upper part of the backing paper piece is cut off in a large size, the stored items can be easily taken out even in envelopes made of cardboard.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention; Fig. 1 is a developed plan view, Fig. 2 is a rear view showing an assembled state, Fig. 3 is a rear view of the sealed state, and Fig. 4 is a rear view of the unsealed state. It is. 1 is the cover piece, 2 and 3 are the folding lines, 4 is the folding piece, 5
is the folding line, 6 is the sealing piece, 8 is the L-shaped perforation,
9 is the fold, 10 is the backing paper piece, 12 is the cut, 13 is L
Letter-shaped perforation, 14 is a tear line, and 15 is an opening hole.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) An envelope consisting of a rectangular cover piece with a backing piece attached to the lower edge via a folding line, folding pieces on both sides, and a sealing piece on the upper edge: An L-shaped perforation for an opening hole is provided at one end of the piece, while a substantially U-shaped cut line that opens in one direction of the seal is provided on the backing paper piece, and the depth of the U-shaped cut line is An envelope characterized in that the height of the envelope and the height of the sealing piece are substantially the same, and the envelope is made of cardboard. (2) Claim 1 of the utility model registration claim characterized in that the substantially U-shaped cut line is formed by a finger hook cut and an L-shaped perforation continuous from both ends of the cut. Envelope as stated.