JPH0741012A - Packing bag - Google Patents

Abstract

PURPOSE:To provide a packing bag wherein a bottom part closed part or an opening part closed part can be easily opened by means of an opening tape even when it is transported and displayed with this state by filling contents after laying a closing flap on an opening side or a filler paper cord downwardly, and then closing it. CONSTITUTION:One end of a cylindrical body 12 provided with margins 11 formed by straight cutting its both ends is folded to one wall surface 12a side, and then a filler paper cord 14 extended to both wall surfaces 12a of the cylindrical body 12 is bonded to both side surfaces so as to surround this folded part 13, thereby one end is closed, and a bottom closing part 15 is made. In an opening part, the end is folded to the other wall surface 12a side same as a bottom part after contents is filled. A filler paper cord 18 protruding from the opening side end edge is bonded to the other wall surface of the cylindrical body 12 so as to surround and seal the folded part, and an opening tape 16 is stuck to any one or both of filler paper cords 14, 18 to be provided on both ends of the cylindrical body 12 so as to be positioned on the folding side from the folded line of the cylindrical body end.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging bag, and more particularly, to a flap or patch paper which is sealed at its end when the packaging bag is filled with contents so that it can be opened by an opening tape. Regarding packaging bags with gussets.

[0002]

2. Description of the Related Art For example, polyethylene sachets or the like filled with sugar, salt, etc. are packaged in a packaging bag together with several or several tens, and delivered from a manufacturer to a supermarket or the like. At this time, as a packaging bag for packaging a plurality of small bag groups, a bag with a gusset made of relatively thick kraft paper was used.

In conventional packaging bags, the packaging bags filled with such a group of pouches are directly displayed in a place where the consumer can see them, and the contents such as sugar and salt can be freely taken out to a cash register. The wall surface of the packaging bag was configured so that it could be opened easily and easily so that it could be taken and cleared (Japanese Patent Publication No. 60-15443 and Japanese Utility Model Publication No. 62-36).
772).

The invention disclosed in Japanese Examined Patent Publication No. 60-15543 is a case of a packaging bag having a stair cut end, while
The invention disclosed in Japanese Utility Model Publication No. 62-36772 is a case of a packaging bag having a straight cut end. Here, the former packaging bag disclosed in Japanese Patent Publication No. 60-15543 will be briefly described with reference to FIG.

This packaging bag 1 is basically composed of two opening tapes 2a, which are spaced along the entire length in the longitudinal direction on the inside of one wall surface of a tubular body with a gusset whose both ends are formed by step cutting.
2b is attached, on the other hand, the opening tape is also attached to the one end flap 3 of the tubular body at a predetermined position over the entire width thereof, and the one end flap 3 of the tubular body which has been flattened is bent. An adhesive applied to the outside of the unsealing tape is adhered and closed to form a bottom closure.

[0006] In this packaging bag, after a small polyethylene bag filled with sugar, salt or the like, which is the content, is aligned and inserted from the mouth portion, the flap at the mouth portion is bent in the same manner as the bottom closing portion, The pressure-sensitive adhesive which has been previously applied to the stairs or the hot-melt adhesive is applied by a packaging machine, and the adhesive is fixed and closed.

[0007] In order to display the packaging bag in a supermarket or the like so that a small bag of the contents can be directly taken out,
Each of the two opening tapes is pulled up from the notch formed in the flap at the closed end, which is an extension of the wall surface for attaching the opening tape, and the wall is torn in the longitudinal direction to form an open surface in a predetermined area on the entire wall. To expose the contents.

By the way, recently, the following requests have been made by users such as supermarkets because of effective utilization of resources. That is, although this type of packaging bag is very durable and desirable to be reused, the conventional packaging bag has a space so that the consumer can freely take out the inner pouch as shown in FIG. Since the two opening tapes tear the entire wall surface in the longitudinal direction, the tape cannot be reused.

There is also a problem that if the body portion, that is, the wall surface is cut in the longitudinal direction, it is difficult to organize the used packaging bag because it is difficult to organize. Further, in practice, when the number of pouches is small, rather than opening the wall surface as described above, one of the ends of the packaging bag, which is the mouth or the bottom, is opened and the pouch is pulled out in the longitudinal direction. There is also the fact that it is easier to take out.

Regarding this unsealing, for example, in a multi-layer kraft paper bag for directly packaging resin, refined powder or the like, a method in which one end can be unsealed with an unsealing tape is already known. Therefore, a conventional paper bag whose end can be opened will be described. Conventionally, as a general end-openable paper bag, both ends of a tubular body having both ends formed in a straight line are adhered to opposite wall surfaces of a backing paper protruding from the edge of the tubular body. , The bottom part of the backing paper was pasted with an unsealing tape that extends in the width direction outside the fold line that folds the end during sealing, and this end of the tubular body was normally bent twice. After that, it is known that a backing paper is adhered to the opposite wall surface to form a bottom closing portion.

[0011]

By the way, when an opening method for a paper bag is adopted at the bottom of a conventional packaging bag of this type, the flap first pops out after opening, which hinders removal of the contents. become. I tried slitting this to some extent, but it turned out to be a problem. The occurrence of such a problem is due to the following reasons. That is, when a group of polyethylene sachets filled with sugar, salt, etc. is put into the packaging bag through the mouth of the other end, the packaging bag is (a problem in the structure of the content filling machine, Due to the problem of ease of use and the problem of ease of sealing and sealing the backing paper, etc., the flaps on the mouth side are laid down so that they remain flat, and the flaps are laid in the state at the time of filling. A plurality of small bag groups put together are moved as a whole from the outside in the longitudinal direction of the packaging bag, the opening of the packaging bag is opened, and the bag is pushed in as it is to be filled.

Usually, in such a packaging bag for filling a group of pouches, it is decided which wall surface is up in this state. In other words, the wall surface of the packaging bag where the flap on the mouth side is not exposed is on the top. Therefore, various printings are made on the wall surface on the assumption that the wall surface faces upward when the packaging bag is laid down. The vertical positional relationship of the wall surfaces in this packaging bag does not change from the transportation to the supermarket or the like to the loading arrangement at the store after the above-mentioned small bag group as the content is filled.

This is because once the small bag group, which is the contents, is filled in the packaging bag and the mouth is closed, the packaging bag will not be purposely inverted due to its weight. The current situation is that loading and unloading are carried out during transportation while maintaining the positional relationship. However, the fact that the vertical positional relationship of the wall surfaces of the packaging bag is determined in this manner makes it difficult to tear the backing paper with the opening tape at the bottom.

That is, in the case of a packaging bag having stepwise cuts at both ends in which closed flaps that are connected to the respective wall surfaces are formed, the staircase surfaces face in mutually opposite directions. This usually occurs because a packaging bag of this type is formed by continuously cutting a long sheet, and is well known.

Therefore, when the packaging bag is laid down so that the flap on the mouth side is on the lower side and the contents are filled, and the contents are closed according to a conventional method, the end of the bottom closing part which is already closed is:
Since the flap is on the upper side, it is bent from the upper wall surface 4 to the lower wall surface as shown in FIG. The packaging bag is transported in this state as described above, and is loaded and displayed in a supermarket or the like.

Therefore, when a store clerk in a supermarket or the like tries to open this packaging bag, the opening tape 7 provided on the backing paper 6 at the end 5 on the bottom side is pulled up to start tearing the backing paper 6 linearly. Then, as is apparent from FIG. 9, the upper portion 6a of the torn paper 6 is lifted up together with the tear tape 7. This torn paper part 6a
Directly underneath, the end portion is bent downward, and therefore the fold-up upper portion 8 of the wall portion that covers the gusset portion that is folded in a triangular shape is located. The upper part 8 of the bent part, which is adhered to the part 6a, is easily lifted by the opening of the town, and the pulling force is not concentrated on the opening tape. There was found.

Further, when the end portion of the tubular body with a gusset is bent near the end edge of the mouth to form a flat bag, and the bag is filled with contents to make a square shape, the bending line portion of the end portion is It will be centrally located on the end face of the rectangular bag. On the other hand, the unsealing tape is attached to the patch paper on the outer side of the folding line portion.

As a result, in the case where the bent portion is oriented downward as shown in FIG. 9 at the end on the opening side, that is, the bottom closed portion,
The unsealing tape 7 attached to the backing paper 6 is located below the central portion of the end surface of the packaging bag which is square due to the filling of the contents. Thus, it has been found that when the opening tape is located below the central portion of the end surface of the packaging bag, the unsealing operator stands up and it is difficult to find the position of the tape of the packaging bag on the table.

The object of the present invention is to enable straight line cutting in addition to the conventional staircase cutting in order to solve such a problem. The closing flap on the mouth side or the backing paper is located on the lower side. To provide a packaging bag in which the bottom closing part or the mouth closing part can be easily opened with an opening tape even when the contents are closed by laying them down as they are, and then transported and displayed as they are. Especially.

[0020]

The present invention is a packaging bag,
For example, it is a packaging bag in which a group of polyethylene small bags containing sugar, salt, etc. is packaged and the ends are opened with an opening tape. That is, the packaging bag of the present invention is such that both ends of the tubular body are bent so that one end of the tubular body with a gusset formed by cutting the ends in a straight line is bent to one wall surface side and then the bent portion is surrounded. The backing paper that straddles the wall surface is adhered to both wall surfaces to close it, forming a bottom closing part, and the mouth part is filled with contents, and the end part is bent to the same wall surface side as the bottom part, and the bent part is surrounded. Adhesive paper sticking to the other wall surface of the tubular body from the mouth side edge so that it can be sealed, and for opening either or both of the paper sheets provided at both ends of the tubular body. It is characterized in that the tape is attached so as to be positioned on the bending side from the bending line of the end portion of the tubular body.

Further, the packaging bag of the present invention is a tubular body with a gusset having stepped end portions each having a closed flap which is connected to one wall surface at one end and is connected to the other wall surface at the other end. One end is cut at any position including the inner edge or at the outer side, and the cut end is bent in the same direction as the direction in which the closing flap of the other end is bent, and then this bending A backing sheet with an unsealing tape that extends over both wall surfaces of the tubular body so as to surround the portion is adhered to both wall surfaces and closed to form a bottom portion, and the unsealing tape is formed from a bending line at one end of the tubular body. It is characterized in that it is adhered to the backing paper so as to be located on the folding side.

[0022]

According to the packaging bag of the present invention, in order to fill a group of small bags from the mouth, the packaging bag is laid down so that the patch or the closing flap at the mouth is on the lower side, and a predetermined amount of the content is filled by the filling machine. After that, the closing flap is folded and adhered to the wall surface to be closed, or the end portion is folded and the end portion of the patch paper is adhered to the wall surface to be closed.

At that time, in the bottom closing portion of this packaging bag, the bent portion of the end portion is directed upward just like the mouth portion. Since the packaging bag is transported and displayed in this state, the bottom closure is opened in this state. This means that when the bottom tape is pressed down and the opening tape attached to the closed backing paper is pulled up and begins to tear, the upper part of the backing paper that is torn is about to lift up with the opening tape. .

However, since the end portion of the wall surface to which the upper portion of the torn paper is adhered is folded upward, that is, folded back to the wall surface side, it is lifted up together with the upper portion of the torn paper. Even if you try to pull it up, the end that is bent inward prevents it from lifting, so that the part of the backing paper that is torn as a result is also prevented from lifting and this causes the pulling force to concentrate on the opening tape and linearly It tears according to the opening tape.

Further, since the unsealing tape attached to the backing paper at the bottom closed portion of this packaging bag is located above the center of the end face for the reason described above, the unsealing operator finds the unsealing tape. Since it is easy and easy to pull up, the efficiency of the unsealing work becomes very good.

[0026]

EXAMPLES The packaging bag of the present invention will be described in more detail with reference to the examples shown in the drawings. FIG. 1 shows a packaging bag 10 according to an embodiment of the present invention in a flattened state. The packaging bag 10 is composed of a single-layer tubular body 12 formed of kraft paper of about 150 g / m 2 and provided with gussets 11 on both sides. The tubular body 12 is a so-called linear cut end portion in which both ends are linearly cut and aligned.

The gussets 11 formed on both side portions of the tubular body 12 are V-shaped by valley-folding the middle portion along the longitudinal direction when flattened. This packaging bag 10
As shown in FIG. 1 and FIG. 2, one end of the tubular body 12 is bent to one wall surface 12a side, and then the two wall surfaces 12a and 12b of the tubular body 12 are straddled so as to surround the bent portion 13. Bottom part 15 formed by adhering backing paper 14 to both wall surfaces
Is equipped with.

An opening tape 16 extending in the width direction is attached to the inside of the backing paper 14 which constitutes the bottom closing portion 15. As is clear from FIG. 2, the unsealing tape 16 is provided on the bent side of one end of the tubular body 12, that is, on the wall surface 1.
It is provided so as to be located on the 2a side. In other words,
The unsealing tape 16 attached to the backing paper 14 is provided so as to be located on the folding side, that is, on the outer side in the longitudinal direction of the tubular body 12 from the folding position (folding line) at the end of the tubular body 12. Has been.

On the other hand, the mouth of the packaging bag 10, that is, the other end of the tubular body 12, is bent at the bending line 17 at the same wall surface 12a side as the bottom closing portion 15 after the contents are filled, A backing paper 18 is attached to the other wall surface 12b of the tubular body 12 so as to surround and enclose the bent portion so as to project from the edge on the mouth side. In short, the packaging bag 10 is, as shown clearly from FIG. 2, a folding side where one end of the tubular body 12 is bent to form a bottom closing portion 15 and a rear mouth end where contents are put from the mouth portion. The same direction as the folding side where the parts are bent, and the same wall surface 1
It is bent to the 2a side.

The method of using the packaging bag 10 thus constructed will be described. As shown in FIG. 3, this is used to fill a group of polyethylene sachets filled with sugar, salt, pet food or the like from the mouth. Pad 18 at the mouth
The packaging bag 10 is laid down so that the lower side is on the lower side. Then, after filling the contents of the pouch group with a filling machine, the mouth end is folded along the folding line 17 and then the patch 1
After the adhesive is applied to 8, the adhesive is adhered to the end face connected to the wall surface 12a and closed.

As a result, the mouth end filled with the contents and closed is in the same state as the bottom closure 15 having a square shape as shown in FIG. In other words, in the bottom closing portion 15 of the packaging bag 10, the end bent portion 13 is directed upward just like the mouth end portion. As described above, since the packaging bag 10 of this type is transported and displayed in this state, that is, in a horizontal state in which the wall surface 12a located at the time of filling the contents is as it is, the bottom closing portion 15 is not opened. It is done in this state.

That is, the opening tape 16 attached to the backing paper 14 that is closed by pressing the bent portion 13 of the bottom closing portion 15 is pulled up by holding one side portion having notches on both sides, Tear it apart. At this time, open tape 1
When 6 starts tearing the backing paper 14, the upper backing paper portion tries to lift up with the opening tape 16 still attached.

However, since the end of the end surface to which the upper torn paper part to be torn is adhered is folded back upward as shown in FIGS. 4 and 5, the torn paper 14 to be torn is shown. Even if the upper part of the tape is pulled upward and is attempted to be lifted, the inwardly bent end portion prevents the lift-up of the backing paper that is torn, and thus the opening tape 16 The pulling force concentrates on and breaks in a straight line as the opening tape does.

The unsealing tape 16 attached to the backing paper 14 of the bottom closing portion 15 of the packaging bag 10 is
For the above-mentioned reason, since it is located above the center portion of the end face (FIGS. 3 to 5), the unsealing operator can open the unsealing tape 16
Since it is easy to find and pull out, the efficiency of the opening operation is greatly improved.

In the packaging bag 10 according to this embodiment, the opening tape 16 is provided only on the patch paper 14 constituting the bottom closing portion 15, but in the present invention, the patch paper 18 on the mouth side is provided.
Needless to say, the opening tape may be provided in the same manner as the bottom closing portion 15. With this arrangement, the bottom and the mouth are not substantially distinguished at the time of opening, and the opening can be performed from either side.

The packaging bag of the present invention can also be formed from a tubular body having both ends formed in a stepped shape. That is, FIG. 6 shows a tubular body 23 with a gusset that has stepped ends formed with flaps 21 and 22 that are connected to one wall surface at one end and to the other wall surface at the other end. ing. As described above, the tubular body 23 having the both ends stepwise cut is provided with a perforation for cutting in a long sheet, which is continuously tubularly formed and then cut along the perforation. Since the single cylindrical body 23 is formed as a single unit, the stepped surfaces at each end are formed on opposite sides.

Therefore, the characteristics of the packaging bag of the present invention described above cannot be provided in this state. Therefore, as shown in FIG. 6, one end of the cylindrical body 23, that is, the end stepped surface on the side to be the bottom closed portion is cut along one of the cutting lines 24, 25, or 26. First, a case where one end of the tubular body 23 is cut along the cutting line 24 will be described.

The cutting line 24 passes through a position further inward than the end opening edge 23a of the cylindrical body 23 which is located inward in the longitudinal direction. Therefore, if the end portion is cut at this position, the end portion becomes the same as the straight cut end portion shown in FIG. Therefore, on the cut end side, one end of a patch paper (not shown) with an opening tape is attached to the wall surface where the closing flap 22 on the mouth side is connected, and the cut end of the tubular body 23 is bent. After that, if the other end of the backing paper is attached as shown in FIG. 2 so as to surround the bent portion, the configuration of the bottom closing portion formed by this is the same as the packaging bag 10 shown in FIGS. 1 and 2. It has exactly the same configuration as the bottom closing portion 15 of the above. Therefore, further explanation is omitted.

Next, a case where one end of the tubular body at the stair cut end is cut along the cutting line 25, in this case, from the end opening edge 23a of the tubular body 23 located inward in the longitudinal direction. Also, since the cutting line 25 passes to the outside, the staircase surface remains, though slightly. However, since the step of each edge after cutting is very small as described above, when closing, the end is bent as it is in the direction opposite to the stepped surface.

That is, the closing flap 22 of the mouth is bent in the same direction as the bending side. Therefore, it is substantially the same as the case of cutting along the cutting line 24. Of course, also in this case, providing a releasable tape-applied pad (not shown) is the same as the above-mentioned example.

Further, a case will be described in which one end of the stepped cylindrical body 23 is cut along the cutting line 26 to form a packaging bag. FIG. 7 shows a state in which one end is cut along the cutting line 26.
It is the top view which looked at the flat tubular body 23 with a gusset of the stairs cut end from the opposite side, ie, the back side. After cutting one end of the tubular body 23 along the cutting line 26, the remaining portion 21 of the flap at the end portion on the cutting side is longitudinally (longitudinal direction of the tubular body) at a position within the flat width of the gusset. The extending notch 27 is inserted up to the position of the end opening edge 23a on the inner side.

The end of the cylindrical body 23 on the cutting side is bent at a bending line 28 along the end opening edge 23a located inwardly, after the notch 27 is formed at the position as described above. . Needless to say, this folding direction is the same as the folding side of the closing flap 22 at the mouth. After that, as in the case of the above-described embodiment, a patch paper (not shown) with an opening tape is adhered across both wall surfaces so as to surround the bent portion.

In this way, when the staircase cut end is bent to the side opposite to the staircase surface to form a packaging bag, the square-shaped bottom part has a slit-like shape between the triangular regions due to the folding of the town on both sides. There is a gap. However, since the content is a group of small bags filled with sugar, salt, etc. as described above, there is no possibility of leakage at all by simply pressing the end bent portion with a pad.

Further, in this embodiment, the cut portion 27 is formed in the remaining portion 21 of the flap at the end portion on the cutting side for the following reason. To open the bottom closure, pull up one end of the stripping tape of the reliance paper and tear it open, opening the fold end to open the contents for removal.
However, if one end of the tubular body at the end of the staircase is closed at the bottom according to the procedure described above, it will be difficult to take out the contents if the upper wall edge projects from the lower wall edge if it is returned to its original state when opened. Become.

Therefore, if the notch 27 is formed at the end of the upper wall surface as described above, at the time of unsealing, as shown in FIG. 8, only the flap remaining portion 21a between the notches 27 is folded and the bottom is closed. Since the parts are opened, the contents can be taken out very easily.

Thus, in the packaging bag of the above-mentioned embodiment,
Regardless of whether the end is straight cut or step cut, after filling the sachets of the contents from this mouth with the patch paper or closing flap of the mouth down, this packaging bag as it is Not only can the bottom closure be opened when it is transported and displayed in a store, but it is also very easy to open.

[0047]

As described above, according to the packaging bag of the present invention, even when the packaging bag is formed of a straight-cut end cylindrical body or a stair cut-end cylindrical body, the mouthpiece padding paper is used. Or, after filling the small bag group of contents from this mouth with the closing flap down, the packaging bag can be transported as it is and the bottom closing part can be easily opened even if it is displayed in a supermarket etc. Therefore, the packaging bag is very easy to dispose after use and the packaging bag can be reused.

Further, according to this packaging bag, when the bottom closing portion is opened, the opening tape is in a position where it can be easily seen, so that it is very easy to confirm, and tearing of the patch paper by pulling up the opening tape is possible. It has a great effect such as being linear and very smooth, and being extremely easy to open.

[Brief description of drawings]

FIG. 1 is a plan view showing a packaging bag according to an embodiment of the present invention in a flat state.

FIG. 2 is a sectional view schematically showing the packaging bag of the present invention shown in FIG. 1 taken along line 2-2.

FIG. 3 is a perspective view of the packaging bag of the present invention shown in FIG. 1 in which the contents are put into the packaging bag from the mouth to form a square shape, and particularly the bottom closing portion.

FIG. 4 is a partial perspective view showing a state in which the bottom closing portion of the packaging bag shown in FIG. 3 is opened with an opening tape.

5 is a partial cross-sectional view showing the structure of the packaging bag shown in FIG. 3 by breaking the bottom closure along line 5-5.

FIG. 6 is a plan view showing, in a flat state, a cylindrical body of a stair cut end forming a packaging bag according to another embodiment of the present invention.

7 is a plan view showing a state in which the packaging bag of the present invention is formed by the tubular body of the staircase cut end shown in FIG. 4, one end of which is cut along a cutting line, and a cut is made at the end. It is a figure.

8 is a partial perspective view showing an opened state of a bottom closing portion of the packaging bag of one aspect formed from the tubular body of the staircase cut end portion shown in FIG. 4. FIG.

FIG. 9 is a partial perspective view showing a configuration of a conventional packaging bag in which the bottom closing portion can be opened, in which the bottom closing portion is opened with a group of pouches inserted from the mouth.

FIG. 10 is a perspective view showing a conventional packaging bag whose wall surface can be opened.

[Explanation of symbols]

 10 Packaging Bag 11 Town 12 Cylindrical Body 12a One Wall Surface 12b Other Wall Surface 13 Bending Part 14 Patch Paper 15 Bottom Closing Part 16 Opening Tape 17 Folding Line 18 Patch Paper 22 Closing Flap 23 Stair Cut Edge Cylindrical Body 23a Inner edge 24 Cutting line 25 Cutting line 26 Cutting line 27 Cutting part 28 Bending line

Claims (2)

[Claims] 1. A gusseted tubular body having both ends formed by cutting straight lines is bent at one end toward one wall surface, and then extends over both wall surfaces of the tubular body so as to surround the bent portion. The backing paper is adhered to both wall surfaces to close it, forming a bottom closing part, and the mouth part is filled with contents so that the end part is bent to the same wall surface side as the bottom part, and the bent part can be enclosed and sealed. Is adhered to the other wall surface of the tubular body from the mouth-side end edge, and the unsealing tape is attached to either or both of the two paper sheets provided at both ends of the tubular body. A packaging bag, characterized in that it is attached so as to be located on the bending side of the bending line at the end of the body. 2. A gusseted tubular body having stepped ends, each of which has one end connected to one wall surface and the other end connected to the other wall surface. Or cut at an arbitrary position outside thereof, and the cut end is bent in the same direction as the direction in which the flap of the other end is bent, and then the tubular shape is formed so as to surround the bent part. Adhesive wrapping paper with unsealing tape that straddles both wall surfaces of the body is adhered to both wall surfaces and closed to form a bottom closing portion, so that the unsealing tape is positioned on the folding side from the fold line at one end of the tubular body. A packaging bag which is adhered to the above-mentioned backing paper.