Packaging bags

Abstract

To provide a packaging bag capable of firmly fixing a commodity inside the bag using only a bag body without using any member other than the bag, which can thereby prevent a commodity damage accident that tends to occur during transportation, display, or placement work, and that allows the commodity to be clearly shown to an outside in accordance with a window when the window is formed.SOLUTION: An interval D between opposing folds 4L and 4R in a bag body 2 of both gusset parts 3L and 3R is set to a dimension equal to or slightly larger than a width dimension W of an object P to be packaged stored in the bag body 2, the object P to be packaged is clamped and fixed within the bag body 2 between the folds 4L and 4R of both the gusset parts 3L and 3R.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to a packaging bag that can easily package cylindrical products such as lipstick or stick-shaped glue, or rod-shaped products such as writing implements, as well as cylindrical sample products containing a small amount of fluid or powder, and even ampoule bottles containing liquid medicine, and can also be used for display as needed. [Background technology]

[0002] A known example of this type of packaging bag is the hanging / display bag described in Patent Document 1. This bag has a header for hanging at the top of the packaging bag, an open bottom end that is sealed with a sealing strip extending from the bottom end, and is a hanging display bag for displaying products while containing them. The bag has horizontal gussets on the sides, and the sealing strip is formed to seal the opening along the width of the horizontal gusset. A reinforcing strip extends from the bottom end of the opening opposite the sealing strip, overlapping part or all of the inside of the sealing strip. This hanging / display bag allows users to choose between hanging and standing display methods, making it extremely useful in environments where streamlining product display methods is desired, such as supermarkets and convenience stores. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3147336 Summary of the Invention [Problem to be solved by the invention]

[0004] However, with the above-mentioned conventional bags, the product is simply contained within the bag, so the product moves freely within the bag during transportation, display, or placement. As a result, not only is there a risk of the product being damaged, but when removing the product, the product may come out in an unexpected orientation, which could lead to an accident such as the product being dropped in a panic. Furthermore, since the product can move freely within the bag, the top and bottom of the product are not fixed, so if the bag has a window, the product inside the bag will not be aligned with the window when displayed, which creates the problem of not being able to display the product neatly.

[0005] While the above-mentioned problems can be solved by, for example, providing a separate member for securing the product in the bag and placing it inside the bag together with the product, this creates new problems, such as increased packaging costs and more cumbersome packaging work.

[0006] The present invention has been made in consideration of the above points, and its object is to provide a packaging bag that can securely fix a product inside the bag using only the bag body without using any other components other than the bag, thereby preventing damage to the product that is likely to occur during transportation, display, or placement, and, if a window is formed, can be fitted to the window so that the product can be displayed neatly to the outside. [Means for solving the problem]

[0007] In order to achieve the above object, the present invention has the following configuration.

[0008] The packaging bag of the present invention is a packaging bag in which gusset portions having folds that protrude toward the inside of the bag body are provided on both sides, and the front wall and rear wall portions that constitute the bag body are overlapped and integrated at their respective upper ends while being opened at their respective lower ends, and the openings are sealed so as to be openable and closable by sealing flaps extending from the front wall and the rear wall portions, respectively, and the spacing between the opposing folds of the two gusset portions within the bag body is set to a dimension equal to or slightly larger than the width dimension of the packaged item to be contained within the bag body, and the packaged item is clamped and fixed between the folds of the two gusset portions within the bag body.

[0009] According to the present invention, since the product can be sandwiched and fixed between the folds of both gusset portions, there is no need to prepare any additional members to fix the product inside the bag, and therefore there is no need to increase costs or make the packaging work complicated to fix the product inside the bag.

[0010] In the packaging bag according to the present invention, the rear wall may be provided with an easy-open portion defined by a perforation.

[0011] In addition, in the packaging bag according to the present invention, both or either one of the front wall portion and the rear wall portion may be provided with a window portion through which the packaged item contained within the bag body can be displayed.

[0012] In the packaging bag according to the present invention, a through hole for hanging may be provided at the upper end where the front wall portion and the rear wall portion are superimposed and integrated.

[0013] In the packaging bag according to the present invention, the sealing flap may be provided with a locking portion that is fitted into the gusset portion and engages with the gusset portion. [Effects of the Invention]

[0014] According to the present invention, the product can be firmly fixed in the bag using only the bag body without using any other components other than the bag, thereby preventing accidental damage to the product that is likely to occur during transportation, display, or placement, and also providing a packaging bag that, if a window is formed, can be fitted to the window to show the product neatly to the outside. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a front view showing a blank for a packaging bag according to one embodiment of the present disclosure. [Figure 2] 2A to 2C are front views showing the assembly procedure of the blank shown in FIG. [Figure 3] FIG. 3 is a front view showing the beginning of the assembly procedure following FIG. 2. [Figure 4] FIG. 4 is a front view showing an assembly procedure following FIG. 3. [Figure 5] FIG. 5 is a front view showing the assembly procedure following FIG. 4. [Figure 6] FIG. 6 is a perspective view showing an assembly procedure following FIG. 5. [Figure 7] FIG. 2 is a schematic cross-sectional view showing a state in which a product is contained in the bag body. [Figure 8] FIG. 7 is a perspective view showing an assembly procedure following FIG. 6. [Figure 9] FIG. 9 is a perspective view showing an assembly procedure following FIG. 8. [Figure 10] 10 is a partial side view showing an assembly procedure following FIG. 9. [Figure 11] FIG. 11 is a partial side view showing the final assembly procedure following FIG. 10. [Figure 12] FIG. 2 is a perspective view of the packaging bag in a completely assembled state. [Figure 13] FIG. 10 is a front view showing a blank according to another embodiment of the packaging bag disclosed herein. [Figure 14] FIG. 14 is a perspective view showing a state in which the blank shown in FIG. 13 is assembled and a product is housed therein. [Figure 15] FIG. 10 is a front view showing another example of a blank according to an embodiment of the packaging bag disclosed herein. [Figure 16] 16 is a view equivalent to FIG. 8 of a packaging bag made from the blank shown in FIG. 15. [Figure 17] 16 is a bottom view equivalent to FIG. 9 showing the blank shown in FIG. 15 during the assembling procedure. DETAILED DESCRIPTION OF THE INVENTION

[0016] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following describes in detail preferred embodiments of the present invention. Note that the following preferred embodiments are merely examples of the present invention and are not intended to limit the technical scope of the present invention.

[0017] <Overall structure of packaging bag> As shown in Figures 1, 7, 12 and 14, the packaging bag 1 disclosed in the present application is a bag in which gusset portions 3L, 3R having folds 4, 5 protruding toward the inside of the bag body 2 are provided on both sides, and the front wall portion 6 and the rear wall portion 7 that constitute the bag body 2 are overlapped and integrated at their respective upper ends 61, 71, while openings 8 (see Figure 6) are provided at their respective lower ends, and the openings 8 are sealed so as to be openable and closable by sealing flaps 9 (the figures only show the symbols for a lower flap 91 and an upper flap 92, which will be described later) that extend from the front wall portion 6 and the rear wall portion 7, as shown in Figures 6, 8 and 9.

[0018] In the above-mentioned packaging bag 1, the distance D between the opposing folds 4L, 4R in the bag body 2 of both gusset portions 3L, 3R is set to a dimension equal to or slightly larger than the width dimension W of the packaged item P to be contained in the bag body 2, as shown in Figure 7, so that the packaged item P is sandwiched and fixed between the folds 4L, 4R of both gusset portions 3L, 3R in the bag body 2.

[0019] With this packaging bag 1, the packaged item P can be clamped and fixed between the folds 4L, 4R of the gusset portions 3L, 3R, eliminating the need to prepare any additional members for fixing the packaged item P inside the bag. Therefore, fixing the packaged item P inside the bag does not increase costs or make the packaging work complicated.

[0020] <Blank configuration> The packaging bag 1 is assembled from a blank 10 as shown in Fig. 1. The blank 10 and its assembly procedure will be described below. Note that the terms up, down, left, and right used in the following description are used merely for convenience of explanation and do not limit the interpretation of the present invention.

[0021] The blank 10 has the rear wall 7, right gusset 3R, front wall 6, left gusset 3L, and adhesive piece 11 connected in this order via folds 15, 16, 17, and 18, a bottom flap 91 and an insertion piece 12 connected in this order to the lower end of the rear wall 7 via folds 19 and 20, and an top flap 92 and a locking piece 13 connected in this order to the lower end of the front wall 6 via folds 21 and 22. Locking pieces 14, 14 are connected to both sides of the top flap 92 via folds 23, 23, respectively.

[0022] The upper end portions 61, 71 of the front wall portion 6 and the rear wall portion 7, specifically the areas protruding above the upper edges of both gusset portions 3L, 3R, are overlapped and glued together to form an integrated unit. These integrated upper end portions 61, 71 are used as hanging portions for hanging display, and therefore have through holes 24, 24 formed in the upper end portions 61, 71, respectively, for inserting hooks used for hanging display. Note that if the packaging bag 1 is not used for hanging display, the through holes 24, 24 do not need to be formed.

[0023] An exhibition window 25 is opened in approximately the center of the front wall 6, and this exhibition window 25 is covered with, for example, a transparent film 26 attached to its peripheral edge. Meanwhile, the rear wall 7 is provided with an easy-open section 28 defined by a zipper-like perforation 27 that is approximately gate-shaped, near its upper end 71. By pushing in a push-in section 28a formed at the upper end of this perforation 27 and breaking this section 28a, and pulling open the easy-open section 28, the packaged item P can be removed from the packaging bag 1. Note that neither the exhibition window 25 nor the easy-open section 28 is essential, and either or both of them may be omitted.

[0024] Each gusset portion 3L, 3R has a fold 4L, 4R formed in its widthwise center. The width dimensions of each gusset portion 3L, 3R are set so that, when the blank 10 is fully assembled, the distance D between the opposing folds 4L, 4R within the bag body 2 is equal to or slightly larger than the width W of the packaged item P, as shown in Figure 7. Because each gusset portion 3L, 3R is configured in this manner, when the packaged item P is placed within the bag body 2, the packaged item P is sandwiched and fixed between the folds 4L, 4R of each gusset portion 3L, 3R within the bag body 2. Furthermore, the lower edges 32, 32 of each gusset portion 3L, 3R are not parallel to the upper edges 31, 31, but are formed by a pair of inclined sides 33, 34 that slope upward toward the center of the lower edge 32. That is, the dimension of each fold 4L, 4R of both gusset portions 3L, 3R is slightly shorter than the dimension of the folds 15, 16, 17, 18 on both sides of both gusset portions 3L, 3R. This reduces interference between the bottom edges 32, 32 of both gusset portions 3L, 3R and the bottom flap 91 during assembly, improving the fit of the bottom flap 91 and the top flap 92. A very small gap is formed between the bottom edges 32, 32 and the bottom flap 91, into which the edges of the locking pieces 14, 14 fit. This allows the locking function of the locking pieces 14, 14 to be fulfilled. The number of folds 4L, 4R formed on both gusset portions 3L, 3R is not limited to one as in this example. For example, there may be three folds, with two on each side protruding into the bag body 2 and contacting the packaged item P. In this case, since there are two folds on each side that hold the packaged item P, the packaged item P can be fixed more stably.

[0025] A locking slit 29 is formed in the fold 19 at the boundary between the rear wall 7 and the lower flap 91. This locking slit 29 corresponds to the locking piece 13 connected to the lower end of the upper flap 92 via the fold 22. The locking pieces 14, 14 connected to both sides of the upper flap 92 correspond to the locking portions specified in claim 5, and as shown in Figures 11 and 12, they are fitted into and engage with the gusset portions 3L, 3R during assembly. The opening 8 formed at the lower ends of the front wall 6 and the rear wall 7 may be sealed only by the lower flap 91. In this case, the lower flap 91 may be fixed to the front wall 6 with adhesive tape, and the upper flap 92 and the locking slit 29 may be omitted.

[0026] <Blank assembly procedure> Next, the procedure for assembling the blank 10 will be described with reference to FIGS.

[0027] First, as shown in FIG. 2, the fold 17 at the boundary between the left gusset portion 3L and the front wall portion 6 is made into a valley fold, and the fold 4L of the left gusset portion 3L is made into a mountain fold.

[0028] Next, as shown in FIG. 3, symmetrically to the left gusset portion 3L, the fold 16 at the boundary between the right gusset portion 3R and the front wall portion 6 is valley-folded, and the fold 4R of the right gusset portion 3R is mountain-folded.

[0029] Next, as shown in FIG. 4, the fold 18 at the boundary between the adhesive piece 11 and the left gusset portion 3L is folded in a valley shape to overlap the adhesive piece 11 on the left gusset portion 3L.

[0030] Next, glue is applied to the surface of the adhesive piece 11 and the upper end 61 of the front wall 6, and the fold 15 at the boundary between the right gusset 3R and the rear wall 7 is valley-folded, and as shown in Figure 5, the upper end 71 of the rear wall 7 is overlapped with the upper end 61 of the front wall 6 and the left edge 72 of the rear wall 7 is overlapped with the adhesive piece 11, so that the upper ends 61, 71 of the front and rear walls 6 and 7 are overlapped and integrated, and the left edge 72 of the rear wall 7 is attached to the adhesive piece 11. This forms a storage space 30 for the packaged item P within the bag body 2.

[0031] Next, the packaged item P is inserted into the storage space 30 in the bag body 2 through the openings 8 at the lower ends of the front wall 6 and the rear wall 7. As shown in Figure 7, the distance D between the opposing folds 4L, 4R of the gusset portions 3L, 3R is set to a dimension equal to or slightly larger than the width dimension W of the packaged item P, so the packaged item P is sandwiched and fixed between the folds 4L, 4R of the gusset portions 3L, 3R within the storage space 30.

[0032] Next, fold the crease 19 at the boundary between the bottom flap 91 and the rear wall 7, and fold the crease 20 at the boundary between the bottom flap 91 and the insertion piece 12, and insert the insertion piece 12 into the storage space 30. This state is shown in Figure 8.

[0033] Next, fold the crease 21 at the boundary between the upper flap 92 and the front wall 6, fold the crease 22 at the boundary between the upper flap 92 and the locking piece 13, and overlap the upper flap 92 on the lower flap 91, inserting the locking piece 13 into the locking slit 29. This state is shown in Figure 9.

[0034] Finally, as shown in Figures 10 and 11, the folds 23 on both sides of the top flap 92 are folded back, forcing the locking pieces 14 into the spaces 35 between the gusset portions 3L and 3R. Here, the locking pieces 14 are tapered to fit the tips of the locking pieces 14 into the spaces 35, and the edges of the locking pieces 14 can easily fit into the very small gap between the lower edges 32 of the gusset portions 3R and 3L and the bottom flap 91. This locks the locking pieces 14 into the spaces 35, and they will not easily slip out of the spaces 35. As a result, the opening 8 of the bag body 2 is completely sealed by the sealing flaps 9 (91 and 92), completing the packaging bag as shown in Figure 12. Finally, it is advisable to attach a sealing sticker to the locking slit 29, which will prevent the locking piece 13 from accidentally coming off the locking slit 29.

[0035] Fig. 13 shows a packaging bag blank 10 adapted to accommodate a packaged item P longer than the packaged item P shown in the above embodiment (for example, lipstick or stick-shaped glue), such as a writing implement, and Fig. 14 shows the blank 10 assembled to accommodate the packaged item, i.e., a writing implement P. In these figures, the same components as in the above embodiment are given the same reference numerals, and explanations of the respective parts will be omitted as they overlap with those in the above embodiment.

[0036] Figure 15 shows a modified example of the blank 10 shown in Figure 1. In this example, the shape of the upper flap 92 and the locking piece 13 provided on the upper flap 92, the shape of the locking slit 29 corresponding to the locking piece 13, and the shape of the easy-open portion 28 are different from those of the example shown in Figure 1.

[0037] That is, the locking piece 13 is formed by tapered notches 93, 93 on the edge of the upper flap 92, inclining from both sides of the upper flap 92 toward the center toward the fold 21. As a result, the fold 22 shown in the above example is omitted. Meanwhile, the locking slit 29 is formed in a gate shape in the middle of the lower flap 91, not at the fold 19, corresponding to the locking piece 13. Figure 16 shows the assembly procedure for this modification, and corresponds to Figure 8 in the above example. Here, too, the fold 19 at the boundary between the lower flap 91 and the rear wall 7 is valley-folded, and the fold 20 at the boundary between the lower flap 91 and the insertion piece 12 is valley-folded, and the insertion piece 12 is inserted into the storage space 30. Thereafter, as shown in Figure 17, the fold 21 at the boundary between the upper flap 92 and the front wall 6 is valley-folded, and the upper flap 92 is placed on the lower flap 91, and the locking piece 13 is inserted into the locking slit 29. The subsequent procedures are the same as in the previous example. Here, because the locking pieces 13 are parallel to the upper and lower flaps 91, 92, there is no risk of the locking pieces 13 coming out of the locking slits 29 even if the weight of the packaged item P is applied to the upper and lower flaps 91, 92 from the storage space 30 side. Therefore, although in the previous example it was preferable to attach a sealing sticker to the locking slit 29 in some cases to prevent the locking pieces 13 from coming out, in this example it is possible to omit the attachment of the sealing sticker, thereby making the packaging work of the packaged item P more efficient.

[0038] To remove the packaged item P, the user pushes in tab 28b formed at the upper end of zipper-like perforation 27, which is roughly gate-shaped and formed in rear wall 7, to break tab 28a and pull open easy-open portion 28, thereby removing packaged item P from packaging bag 1. Tab 28b is formed across lower edge 71a of upper end 71 of rear wall 7, as shown in FIG. 15 . Thus, when removing packaged item P, the user bends lower edge 71a of the overlapping, integrated portion of upper end 61 of front wall 6 and upper end 71 of rear wall 7 toward front wall 6 in a slight mountain fold, thereby lifting tab 28b. This allows easy grasping of tab 28b, enabling smooth opening of easy-open portion 28. The remaining configuration is similar to that of the above-described embodiment, and the same components as those in the above-described embodiment are designated by the same reference numerals, and a description of each component will be omitted.

[0039] The present invention is not limited to the above-described embodiments, and can be embodied in various other forms. Therefore, the above-described embodiments are merely examples in all respects and should not be interpreted as limiting. The scope of the present invention is defined by the claims and is not limited in any way by the text of the specification. Furthermore, all modifications and variations that fall within the equivalent range of the claims are within the scope of the present invention. [Explanation of symbols]

[0040] 1 Packaging bag 2 bags 3L Left gusset 3R Right Gusset 31 Upper edge of gusset 32 Lower edge of gusset 33 Inclined Edge 34 Inclined Edge 35 Gusset space 4L Left gusset fold 4R Right gusset fold 6 Front wall 61 Upper end of front wall 7 Rear wall 71 Upper end of rear wall 72 Left edge of rear wall 8 aperture 9 Sealing flap 91 Lower flap 92 Upper flap 93 Notch 10 blank 11 Adhesive piece 12 Insert 13 Locking piece 14 Lock piece 15 Fold (between rear wall and right gusset) 16 Fold (between right gusset and front wall) 17 Fold (between front wall and left gusset) 18 Fold (between the left gusset and adhesive strip) 19 Fold (between rear wall and bottom flap) 20 fold (between bottom flap and insert) 21 Fold (between front wall and top flap) 22 Fold (between the top flap and the latch) 23 Fold (between top flap and locking piece) 24 through holes 25 Display window 26 Film 27 Perforations 28 Easy opening part 28a Push part 28b Knob 29 Locking slit 30 Containment Space P Packaged item D Fold spacing W: Width of packaged item

Claims

1. A packaging bag in which gusset portions having folds protruding inward of a bag body are provided on both sides, and a front wall portion and a rear wall portion constituting the bag body are overlapped and integrated at their respective upper ends, while openings are provided at their respective lower ends, and the openings are openably and reclosably sealed by sealing flaps respectively extending from the front wall portion and the rear wall portion, A packaging bag characterized in that the distance between the opposing folds of the two gusset portions within the bag body is set to a dimension equal to or slightly larger than the width dimension of the packaged item to be contained within the bag body, and the packaged item is sandwiched and fixed between the folds of the two gusset portions within the bag body.

2. The packaging bag according to claim 1, The packaging bag is characterized in that the rear wall portion is provided with an easy-to-open portion defined by a perforation.

3. The packaging bag according to claim 1 or 2, A packaging bag characterized in that a window portion is provided in both or either one of the front wall portion and the rear wall portion, through which the packaged item contained in the bag body can be displayed.

4. The packaging bag according to any one of claims 1 to 3, A packaging bag characterized in that a through hole for hanging is provided at the upper end where the front wall portion and the rear wall portion are superimposed and integrated.

5. The packaging bag according to any one of claims 1 to 4, A packaging bag characterized in that the sealing flap is provided with a locking portion that is fitted into the gusset portion and engages with the gusset portion.

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