JP2004359322A - Packaging bag - Google Patents

Abstract

The present invention provides a packaging bag and an article packaging structure in which a hanging portion has a sufficient strength.
A storage body (2) and a hanging part (3) having an opening (35) are formed of a tubular film having an upper opening and a lower opening. A right cut line C2 extending from the front surface 21 through the right side surface 24 to the rear surface 22 is formed, and the main body 2 is located below and near the lower cut line C1 and the right cut line C2. Are respectively sealed, and the hanging hand 3 has a left gusset 33 between the upper opening and the left cutting line C1, and a right gusset 34 between the upper opening and the right cutting line C2. The front plate 31 is located above the front surface 21 and the rear plate 32 located above the rear surface 22 is folded into the left side surface 23 and the right side surface 24 of the main body 2, respectively. Gusset part 3 Preparative are formed close while intervening, apertures 35 are formed through the front plate 31 and rear plate 32 together with the left gusset portion 33 and the right gusset portion 34.
[Selection] Figure 2

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a substantially rectangular parallelepiped storage main body in which articles are stored, and a substantially plate-shaped suspending hand portion extending on an upper surface of the storage main body and having a suspending hand opening, and an upper opening and a lower opening. The present invention relates to a packaging bag formed of a tubular film having a substantially rectangular cross section having a portion.
[0002]
Problems to be solved by the prior art and the invention
When packing absorptive articles such as disposable diapers and granular materials such as pet food, the upper opening and the lower portion are formed from a tubular film having a substantially rectangular cross section having an upper opening and a lower opening. A packaging bag in which an opening is sealed is used.
[0003]
In the sealing portion of the upper opening of the packaging bag having such a configuration, the left and right side surfaces near the upper opening of the tubular film are folded inward, and the front and rear surfaces near the upper opening are folded between them. A configuration in which the right and left side surfaces are adjacent to each other is often used (see Patent Document 1).
[0004]
In addition, for convenience of carrying the packaging bag, as shown in a packaging bag 101 shown in FIG. 8, a hanging hand portion 103 having an opening 135 formed in a sealing portion of an upper opening on the upper surface of the storage body 102. Is used. As shown in FIG. 9A, the hanging hand 103 has a left gusset 133 and a right gusset 134 folded inward, respectively, and the front plate 131 and the rear plate 132 have a folded left between them. It is formed by providing an opening 135 that is close to the gusset 133 and the right gusset 134 and penetrates the front plate 131 and the rear plate 132. Note that heat seal portions H101 and H102 are formed laterally above and below the opening 135 in the hanging portion 103, respectively.
[0005]
However, in the hanging portion 103 having such a structure, the load is supported only by the front plate 131 and the rear plate 132 when the packaging bag 101 is carried by hooking a finger on the opening 135. The peripheral strength is weak. Therefore, for example, as shown in FIG. 9B, a reinforcing film 105 (generally 70 to 100 μm thick) separate from the tubular film is provided on the front plate 131 of the hanging portion 103, and The strength of the hand 103 is improved.
[0006]
If such a reinforcing film is not provided, the strength around the opening 135 in the hanging portion 103 will be insufficient, and when the user carries the packaging bag 101 with his / her finger on the opening 135, the hanging portion 103 The portion above the opening 135 may be extended (see FIG. 10) or cut. Recently, due to the demand for cost reduction of the film, there has been a tendency to reduce the thickness of the film, and it has become more difficult to secure the strength of the hanging portion. Therefore, a reinforcing film is often required. I have.
[0007]
[Patent Document 1]
JP 2001-206391 A
Therefore, an object of the present invention is to provide a packaging bag in which a storage body and a hanging portion are formed of a tubular film having an upper opening and a lower opening, without reinforcing the hanging portion with a reinforcing film. An object of the present invention is to provide a packaging bag in which a hanging portion has sufficient strength and an article packaging structure in which an absorbent article is stored in the packaging bag.
[0009]
[Means for Solving the Problems]
The present invention relates to a substantially rectangular parallelepiped storage main body in which articles are stored, and a substantially plate-shaped suspending hand portion extending on an upper surface of the storage main body and having a suspending hand opening, and an upper opening and a lower opening. A packaging bag formed of a tube-like film having a substantially rectangular cross-section having a portion, and a left cut line extending from a front surface of the tube-like film through a left side surface to a rear surface of the tube-like film in the vicinity of the upper opening in the tube-like film. And a right cut line extending from the front surface of the tubular film to the rear surface via the right side surface is formed at substantially the same height along the cross section of the tubular film, and the storage body is the tubular film. The lower part of the left cut line and the lower cut line and the vicinity of the lower opening are respectively sealed and formed, and the hanging part is formed of the tubular film. The left gusset between the upper opening and the left cut line and the right gusset between the upper opening and the right cut line in the tubular film are respectively left and right sides of the storage body. A front surface of a hanging hand portion located on the front upper portion of the housing body and a hanging hand portion located on the rear upper portion of the housing body in the tubular film. A rear plate is formed in proximity to the folded left gusset and the right gusset in a state interposed therebetween, and the hanging hand opening is formed between the hanging hand front plate and the hanging hand back. The object is achieved by providing a packaging bag formed by penetrating a board together with the folded left gusset and the right gusset.
[0010]
Further, the present invention is an article packaging structure in which a plurality of compressible absorbent articles are stored in the packaging bag, wherein the absorbent articles are disposable diapers, and a left side face and a right side face of the storage body. The present invention provides an article packaging structure in which a plurality of the disposable diapers have their abdominal and back sides parallel to the left and right sides and are stored in series in a compressed alignment state.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a packaging bag and an article packaging structure of the present invention will be described based on a preferred embodiment with reference to the drawings.
As shown in FIGS. 1 to 3 and 5, the packaging bag of the present embodiment has a substantially rectangular parallelepiped storage body 2 in which an article (disposable diaper) A is stored, and extends on an upper surface 25 of the storage body 2. And a hanging hand portion 3 having a substantially plate-like shape and having a hanging hand opening 35, and a tubular film F having a substantially rectangular cross section having an upper opening F1 and a lower opening F2. In the vicinity of the upper opening F1 of the tubular film F, a left cut line C1 extending from the front surface 21 of the tubular film F to the rear surface 22 via the left side surface 23 and the right side surface of the tubular film F from the front surface 21. A right cut line C2 extending to the rear surface 22 through 24 is formed at substantially the same height along the cross section of the tubular film F.
[0012]
In the packaging bag 1 of the present embodiment, the storage main body 2 is sealed in the tubular film F below the left cut line C1 and the right cut line C2 and in the vicinity of the lower opening F2. The hanging portion 3 is provided with a left gusset 33 between the upper opening F1 in the tubular film F and the left cut line C1 and the upper opening F1 in the tubular film F. The right gusset 34 between the right and left cut lines C2 is folded so as to be located inward of the tubular film F with respect to the left side surface 23 and the right side surface 24 of the housing body 2, respectively. A hanging hand front plate 31 located above the front surface 21 of the housing body 2 of the film F and a hanging hand rear plate 32 located above the rear surface 22 of the housing body 2 include: The left gusset part 33 and the right gusset part 34 are formed close to each other with the interposed part, and the hanging hand opening 35 is formed between the hanging hand part front plate 31 and the hanging hand part. The plate 32 is formed so as to penetrate the left gusset 33 and the right gusset 34 that have been folded.
[0013]
The packaging bag 1 of the present embodiment will be described in detail.
As shown in FIG. 5, the tubular film F in the packaging bag of the present invention is a tubular film having a substantially rectangular cross section having an upper opening F1 and a lower opening F2.
As the material of the tubular film in the packaging bag of the present invention, for example, polyethylene, polypropylene, and polyester can be used. In this embodiment, polyethylene is used.
The length, circumferential length, thickness, and the like of the tubular film are appropriately selected based on the size, shape, weight, physical properties, and the like of the packaged article to be obtained. For the tubular film, the length is preferably 20 cm to 60 cm, the perimeter in the cross section direction is preferably 50 cm to 100 cm, and the thickness is preferably 40 μm to 100 μm.
[0014]
The “substantially rectangular shape” of the “tubular film having a substantially rectangular cross section” is not limited to a geometric rectangular shape, but also includes a film that can be regarded as a rectangle as a whole. For example, it includes one in which each side and each vertex is slightly bent or slightly rounded, and one in which a bent portion or a folded portion is provided. In addition, it is sufficient that the shape of the packaging bag is “substantially rectangular” when the packaging bag is completed or when the article is stored in the packaging bag. Also includes those having a substantially elliptical shape (see FIG. 5A) or a crushed shape (see FIGS. 5B to 5D).
[0015]
As shown in FIGS. 1 to 3, the packaging bag 1 of the present embodiment includes a storage body 2 and a hanging part 3. The storage body 2 has a substantially rectangular parallelepiped shape including a front surface 21, a rear surface 22, a left side surface 23, a right side surface 24, an upper surface 25 and a lower surface 26, and has an upper end (sealing portion) 27 and a lower end (sealing portion) 28. Are sealed.
The “substantially rectangular parallelepiped shape” of the “substantially rectangular parallelepiped storage body” is not limited to a geometric rectangular parallelepiped shape, but includes a shape that can be regarded as a rectangular parallelepiped as a whole. For example, it includes one in which each surface, each side and each vertex is slightly bent or slightly rounded, and one in which there is an abutting portion, a bent portion, and a folded portion.
[0016]
Various items can be stored in the storage body 2, and examples of the stored items include disposable diapers, compressible absorbent articles such as sanitary napkins, pet food, and granular materials such as rice. Can be In the packaging bag 1 of the present embodiment, as shown in FIG. 3, a plurality of the disposable diapers A are provided between the left side surface 23 and the right side surface 24 of the storage main body 2. The parts are parallel to the left side surface 23 and the right side surface 24, and are housed in series in a compressed alignment state to constitute the article packaging structure of the present embodiment.
[0017]
As shown in FIG. 1, a substantially plate-shaped hanging portion 3 extends upward on the upper surface 25 of the housing body 2. As shown in FIG. 2, in the hanging part 3, the left gusset 33 and the right gusset 34 are positioned more inside the tubular film F than the left side 23 and the right side 24 of the storage body 2, respectively. It is folded in. Further, a left hand gusset 33 and a right gusset 34 that are folded into a hanging hand front plate 31 located above the front surface 21 of the housing body 2 and a hanging hand rear plate 32 located above the rear surface 22 of the housing body 2. And close to each other with intervening. The left gusset 33 and the right gusset 34 overlap between the hanging hand front plate 31 and the hanging hand rear plate 32.
The “substantially plate-shaped” of the “substantially plate-shaped suspending portion” is not limited to a completely plate-shaped one, but also includes a plate-like one as a whole. For example, as shown in FIGS. 1 and 2A, the front plate 31 and the rear plate 32 may be close to each other but not completely joined in the thickness direction.
[0018]
As shown in FIG. 2, a hanging hand opening 35 is formed in the hanging hand portion 3. The hanging hand opening 35 is formed by penetrating the hanging hand front plate 31 and the hanging hand rear plate 32 together with the folded left gusset 33 and right gusset 32.
In this embodiment, the folded top line 33a of the left gusset 33 and the folded top line 34a of the right gusset 34 are both located inside the both sides of the opening 35 of the hanging hand. Therefore, as shown in FIG. 2A, the front plate 31, the right gusset 34 (two pieces), the left gusset part 33 (two pieces), and the rear board 32 are provided around the central part in the width direction of the opening 35 of the hanging hand. Are formed through the six films. The periphery of the left side of the opening 35 of the hanging hand is formed through four films of the front plate 31, the left gusset 33 (two sheets), and the rear plate 32. The periphery of the right side of the opening 35 of the hanging hand is formed so as to penetrate the four films of the front plate 31, the right gusset part 34 (two sheets) and the rear plate 32.
[0019]
The dimensions of each part of the hanging part 3 are appropriately selected depending on the peripheral length of the tubular film F, the length of the left cut line C1, the length of the right cut line C2, the degree of folding of the left gusset 33 and the right gusset 34, and the like. The width L1 of the hanging part 3 (see FIG. 3, the same applies hereinafter) is preferably 120 mm to 180 mm, and the width L2 of the opening 35 of the hanging part is preferably 100 mm to 120 mm. The distance L3 from the side end of the opening 35 of the hanging hand is preferably 10 mm to 30 mm.
[0020]
The lower ends 3 a, 3 a (see FIG. 2 (b)) of both side edges of the hanging portion 3 each have a divergent shape and are continuous with the upper end edge (sealing portion) 27 of the upper surface 25 of the storage body 2. If the lower ends 3a, 3a of the both side edges of the hanging part 3 are formed in such a divergent shape, as shown in FIG. While there is a risk of breaking easily from the right-angled lower end, the concentrated load on the lower edges 3a, 3a of the side edges of the hanging portion 3 is reduced, and such a break is unlikely to occur.
[0021]
As shown in FIGS. 1 to 3, a notch 41 for cutting the storage body 2 is formed in the upper end portion (sealing portion) 27 of the storage body 2, with the tip pointed downward, avoiding the hanging hand 3. Have been. Also, two perforations 42, 42 are formed to extend through the upper surface 25 of the storage body 2 to the front surface 21 and to extend through the upper surface 25 to the rear surface 22 so as to extend downward from the tip of the notch 41.
As shown in FIG. 3, when the notch 41 is provided, the storage main body 2 can be easily broken from the notch 41 when the storage main body 2 is opened. Further, when the perforations 42 are provided, the cutting line cut from the cutout portion 41 easily extends along the perforations 42.
[0022]
Next, one manufacturing method of the packaging bag of the present embodiment will be described with reference to FIG.
First, as shown in FIG. 5 (a), a tubular film F having a substantially rectangular cross section having an upper opening F1 and a lower opening F2 (as described above, the film is not necessarily rectangular in cross section at the time of manufacture). In the vicinity of the upper opening F1 of the tubular film F, the “front surface” when the cross section of the tubular film F is substantially rectangular or the “front surface” when the packaging bag is completed. The left cut line C1 extending to the rear surface 22 via the left side surface 23 and the right cut line C2 extending from the front surface 21 of the tubular film F to the rear surface 22 via the right side surface 24 are substantially the same height along the cross section of the tubular film F. Formed.
[0023]
Next, as shown in FIG. 5 (b), the portion 23 (the portion that finally becomes the left side surface 23 of the storage main body 2) between the left cut line C1 and the lower opening F2 in the tubular film F is inward. Then, the portion 24 between the right cut line C2 and the lower opening F2 of the tubular film F (the portion which will eventually become the right side surface 24 of the storage body 2) is folded inward.
Further, the left gusset 33 between the upper opening F1 and the left cut line C1 in the tubular film F is folded so as to be located inward from the portion 23, and the upper gusset 33 and the right opening F1 in the tubular film F are folded rightward. The right gusset portion 34 between the cut line C2 is folded so as to be located inside the portion 24.
[0024]
Further, as shown in FIG. 5 (c), the left hand gusset is folded into the hanging hand front plate 31 located above the front surface 21 and the hanging hand rear plate 32 located above the rear surface 22 of the tubular film F. The part 33 and the right gusset part 34 are brought close to each other. Here, the left gusset 33 and the right gusset 34 are overlapped.
Further, a notch 41 and a perforation 42 are formed at a predetermined position of the left cut line C1.
[0025]
Thereafter, as shown in FIG. 5D, the upper edge and the lower edge of the front plate 31 of the hanging hand and the rear plate 32 of the hanging hand are laterally heat rolled, respectively, and the heat roll portions H1 and H2 are formed. Then, the hanging part 31 is formed. Further, heat sealing is performed laterally below the left cut line C1 and the right cut line C2 on the front surface 21 and the rear surface 22 of the tubular film F to form a heat seal portion H3. An edge (sealing portion) 27 is formed.
[0026]
Thereafter, a plurality of disposable diapers A are placed between the left side surface 23 and the right side surface 24 of the storage body 2 from the lower opening F2 of the tubular film F. 23, parallel to the right side surface 24, and stored in series in a compressed alignment state (see FIG. 3). After that, the lower opening F2 is sealed.
In this manner, the packaging bag 1 of the present embodiment in which the disposable diapers A are stored in the compressed alignment state, that is, the article packaging structure of the present embodiment is obtained.
[0027]
In the packaging bag of the present invention, as shown in FIG. 6A, the opening 35 of the hanging hand penetrates at least the vicinity of the folding vertex 33a of the left gusset 33 and the vicinity of the folded top line 34a of the right gusset 34. Must be formed. By forming in this manner, the strength of at least the outer portion from both sides of the hanging hand opening 35 in the hanging hand portion 3 is increased.
As shown in FIG. 6 (b), in order for the hanging part 3 to be formed of at least four films over the entire area in the width direction, at least the folded top line 33a of the left gusset 33 and the right gusset It is necessary that the folded top line 34a of 34 be in contact with it.
[0028]
Further, as in the embodiment shown in FIG. 2A, in order for at least a part of the opening 35 of the hanging hand to be formed through the six films, it is necessary to form the front plate 31 of the hanging hand and the rear of the hanging hand. It is necessary that the left gusset 33 and the right gusset 34 overlap with the plate 32.
Furthermore, as shown in FIG. 6C, in order for the hanging hand opening 35 to be formed so as to penetrate the six films over the entire width direction thereof, the folding apex 33a of the left gusset 33 is required. Must be located to the right of the right edge of the opening 35 of the hanging hand, and the folding vertex 34 a of the right gusset 34 must be located to the left of the left edge of the opening 35 of the hanging hand.
[0029]
According to the packaging bag of the present embodiment, by effectively utilizing the portions near both side edges of the hanging portion, which have not been effectively used in the conventional packaging bag, the hanging portion 3 extends over the entire area in the width direction. In particular, since at least a part of the opening 35 of the hanging hand is formed penetrating through the six films, it has sufficient strength without using a reinforcing film. A hanging hand 3 is formed. Moreover, the hanging portion 3 is stronger than the hanging portion (see FIGS. 8 and 9) of the conventional packaging bag reinforced with the reinforcing film.
Further, according to the article packaging structure of the present embodiment, a large amount of disposable diapers can be efficiently stored in a packaging bag having a strong hanging portion.
[0030]
As described above, a preferred embodiment of the packaging bag and the article packaging structure of the present invention has been described. However, the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the spirit of the present invention. is there.
[0031]
The formation position of the heat seal part of the hanging part 3 can be variously arranged as long as the proximity of the front plate 31 and the rear plate 32 of the hanging part 3 can be maintained. For example, instead of the horizontal heat sealing portion H2 at the lower end of the hanging portion 3 (see FIG. 5D), as shown in FIG. Heat seal portions H4 and H5 can be formed. Further, sealing means other than heat sealing can be used.
[0032]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to the packaging bag of this invention, a hanging part has sufficient intensity | strength, without reinforcing a hanging part with a reinforcement film. According to the article packaging structure of the present invention, a large amount of disposable diapers can be efficiently stored in a packaging bag having a strong hanging portion.
[Brief description of the drawings]
FIG. 1 is a perspective view showing one embodiment of a packaging bag of the present invention.
FIGS. 2A and 2B are views showing an embodiment of the packaging bag of the present invention, wherein FIG. 2A is a cross-sectional view taken along line AA shown in FIG. 2B, and FIG. is there.
FIG. 3 is a front view showing one embodiment of the packaging bag of the present invention, and is a diagram showing a state in which a storage main body is opened from a cutout portion.
FIG. 4 is a front view showing a state in which the hanging portion is broken from the storage body.
FIG. 5 is a schematic perspective view showing one manufacturing method of one embodiment of the packaging bag of the present invention in the order of steps.
FIG. 6 is a view showing various cross-sectional structures of the hanging portion of the packaging bag of the present invention, wherein (a) to (c) are BB cross-sectional views shown in (d) (equivalent to FIG. 2 (a)), (D) is a front view showing the upper part of the storage main body and the hanging hand.
FIG. 7 is a perspective view (corresponding to FIG. 5D) of a modified example in which the formation position of the heat seal portion of the hanging portion in the packaging bag of the present invention is changed.
FIG. 8 is a perspective view showing a conventional packaging bag.
9A and 9B are views showing a conventional packaging bag, wherein FIG. 9A is a cross-sectional view taken along the line CC shown in FIG. 2B (equivalent to FIG. 2A), and FIG. FIG.
FIG. 10 is a front view showing a state in which the hanging portion has been fully extended.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Packaging bag 2 Storage main body 21 Front surface 22 Rear surface 23 Left side surface 24 Right side surface 25 Upper surface 26 Lower surface 27 Upper edge (sealing part)
28 Lower edge (sealing part)
3 Suspended Hand Part 31 Suspended Hand Part Front Plate 32 Suspended Hand Part Rear Plate 33 Left Depth Part 34 Right Depth Part 35 Suspension Hand Opening 41 Notch 42 Perforation A Article (Disposable Diaper)
C1 Left cut line C2 Right cut line F Tubular film F1 Upper opening F2 Lower opening H1, H2, H3, H4, H5 Heat seal part

Claims (6)

A substantially rectangular parallelepiped storage main body in which articles are stored, and a substantially plate-shaped suspending portion having a suspending opening formed on an upper surface of the storage main body, a cross section having an upper opening and a lower opening. A packaging bag formed of a substantially rectangular tubular film,
In the vicinity of the upper opening in the tubular film, a left cutting line extending from the front surface of the tubular film to the rear surface via the left side surface and a right cutting line extending from the front surface of the tubular film to the rear surface via the right side surface, Each is formed at substantially the same height along the cross section of the tubular film,
The storage body is formed by sealing the lower part of the tubular cut film and the vicinity of the lower opening below the left cut line and the right cut line, respectively,
The hanging part has a left gusset between the upper opening in the tubular film and the left cut line and a right gusset between the upper opening and the right cut line in the tubular film. A hanging hand front plate which is folded inwardly to be located inside the tubular film relative to a left side surface and a right side surface of the storage body, respectively, and which is located at an upper front part of the storage body in the tubular film; A hanging hand portion rear plate located on the upper rear surface of the main body is formed close to the folded left gusset portion and the right gusset portion in a state interposed therebetween,
The packaging bag is formed such that the hanging hand opening penetrates the hanging hand portion front plate and the hanging hand portion rear plate together with the folded left gusset portion and the right gusset portion. The packaging bag according to claim 1, wherein the left gusset and the right gusset overlap between the hanging hand front plate and the hanging hand rear plate. The packaging bag according to claim 1, wherein a notch for breaking the storage body is provided in a sealing portion on an upper surface of the storage body so as to avoid the hanging part. The packaging bag according to claim 3, wherein a perforation is provided so as to extend from a pointed end of the notch toward a lower surface of the storage body. The packaging bag according to any one of claims 1 to 4, wherein lower ends of both side edges of the hanging portion each have a divergent shape and are continuous with a sealing portion on an upper surface of the storage body. An article packaging structure containing a plurality of compressible absorbent articles in the packaging bag according to any one of claims 1 to 5,
The absorbent article is a disposable diaper, between the left side surface and the right side surface of the storage body, a plurality of the disposable diapers, the abdominal part and the back part thereof are parallel to the left and right side surfaces, An article packaging structure housed in series in a compressed and aligned state.

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