JP3857968B2 - Packaging box - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a so-called wrap-around type paper packaging box that wraps container products such as can products, and in particular, once the opening is opened and the contents are taken out, the opened extraction opening is opened again. The present invention relates to a packaging box having a function that can be easily sealed.
[0002]
[Prior art]
[Patent Document 1]
Japanese Patent Laid-Open No. 8-143025 [Patent Document 2]
Japanese Patent Laid-Open No. 9-132230
The packaging of container products by so-called wrap-around packaging boxes is generally performed in the following manner. That is, after storing the container product in a belt-shaped body portion generally composed of four side plates, a pair of inner flaps and outer flaps are opened at both ends of the body portion that are left open. The packaging box in which the container product is stored is completed by sequentially closing with.
[0004]
In the packaging box thus formed, the inner flap and the outer flap are generally fixed by gluing. For this reason, for example, after a general consumer who has purchased a packaging box peels off the glued flap and takes out the container product, the inner flap and the outer flap are closed again without gluing to seal the opening. It is not possible.
[0005]
[Problems to be solved by the invention]
When the inner and outer flaps remain open as described above, there arises a problem that the appearance of the packaging box being stored is poor. Furthermore, in the storage with the flap opened, there arises a problem that foreign matter may be mixed in the packaging box during storage. Separately, there is also a method of forcibly closing the inner and outer flaps using adhesive tape etc., but each time it is necessary to prepare adhesive tape and repeat pasting and peeling, so the work is extremely complicated turn into.
[0006]
The present invention has been created under such circumstances, and its purpose is to solve the above-mentioned problems, and once the opening is opened and the contents are taken out, the opened extraction opening is opened. Another object is to provide a packaging box having a resealing function that can be sealed without gluing again.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, the present invention is a wraparound type packaging box comprising a band-shaped body portion formed by connecting a plurality of side plates, and an inner flap and an outer flap. Open the outer and inner flaps in order to take out the container product, open the opening located at the end of the body, and then open the flaps again in the order of the outer and inner flaps. A re-sealing mechanism is provided to lock the outer flap and the inner flap when folded, and the re-sealing mechanism includes an engagement piece substantially formed near the tip of the inner flap and a pair of outer flaps. The engagement piece formed in the vicinity of the front end of the inner flap has a taper that extends from the front end of the inner flap to the inside. Be prepared No substantial trapezoidal and, by folding the inner flap to plug the engagement piece of the inner flap engaging the notch receiving portion is formed after folding the outer flaps, the engagement of the inner flap and an outer flap that It is configured to be stopped.
[0009]
Moreover, as a preferable aspect of the present invention, the tapered portion of the engagement piece is configured to be separated and formed by cutting.
[0010]
Moreover, as a preferable aspect of the present invention, the tapered portion of the engagement piece is configured to be separated by a notch.
[0011]
As a preferred aspect of the present invention, the taper portion of the engagement piece has a perforation, and the perforation portion can be separated when the inner flap and the outer flap are locked.
[0012]
Moreover, as a preferable aspect of the present invention, the tapered portion is configured to have a taper angle of 5 to 40 degrees.
[0013]
Further, as a preferable aspect of the present invention, a flexible movable auxiliary portion is interposed at a position where the inner flap is connected to the trunk portion, and the engagement formed after the outer flap is folded due to the presence of the flexible movable auxiliary portion. It is configured to facilitate the operation of inserting the engagement piece of the inner flap into the notch receiving portion.
[0014]
Moreover, as a preferable aspect of the present invention, it is configured so as to form a form in which the corners of the body portion on the side where the inner flap is connected are cut off in correspondence with the formation of the flexible movable auxiliary portion.
[0015]
As a preferred aspect of the present invention, the Lf / La value, which is the ratio of the engagement piece Lf formed in the vicinity of the front end of the inner flap to the length La in the movable direction of the flexible movable auxiliary portion, is 0.35 to 1. .77.
[0016]
Moreover, as a preferable aspect of the present invention, the container product is configured to be canned beer.
[0017]
In the present invention, the structure of the packaging box itself, in particular, the form of the flap, is devised, and a reliable re-sealing can be achieved without gluing with a simple structure. In other words, by folding the inner flap so that the engagement piece of the inner flap is inserted into the engagement notch receiving portion formed after the outer flap is folded, the inner flap and the outer flap are locked and can be resealed It becomes. In the case of resealing in the present invention, the order of assembling the inner flap and the outer flap is reversed from the first sealed state.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an example of a specific embodiment of the packaging box of the present invention will be described with reference to FIGS.
[0019]
In the embodiment described below, a preferred example in which a flexible movable auxiliary portion is formed between the inner flap and the side plate is shown from the viewpoint that the resealing action of the present invention can be performed more simply. Has been. However, even if this flexible movable auxiliary portion is not provided, the resealing action that is the essence of the present invention is reliably achieved, and is not an essential requirement.
[0020]
FIG. 1 shows an example of a development view of the packaging box 1 of the present invention, and FIG. 2 is a perspective view of assembled original box paper developed as shown in FIG. 3 to 7, the packaging box (product shipping box) assembled as shown in FIG. 2 is opened, and after opening the opening and taking out the contents (container product), the unsealed take-out It is a schematic perspective view for demonstrating the condition until it will simply seal an opening again over time. FIGS. 8 to 10 are partially enlarged plan views (particularly corresponding to the position A in FIG. 1) for explaining the form of the engagement piece substantially formed near the tip of the inner flap.
[0021]
As can be easily understood from the developed view shown in FIG. 1 and the assembly view shown in FIG. 2, the packaging box 1 of the present invention first includes a plurality of (four in the present embodiment) side plates 11, After the container product (can product group such as canned beer) is wrapped in a belt-shaped body portion formed by connecting 21, 15, 25, the belt-shaped body portion is integrated into a cylindrical shape with a paste piece 9. A cylindrical body is formed by fixing.
[0022]
Thereafter, four flexible movable auxiliary portions 38 (substantially rectangular shapes) are folded inward from the crease lines 61, 65, 81, 85 shown in FIG. 1, and four inner flaps are further formed from the crease lines 62, 66, 82, 86. 31, 31, 35, 35 are folded inward.
[0023]
Next, gluing is performed at a predetermined position on the outer surface of the four folded inner flaps 31, 31, 35, 35 (this gluing does not touch the engagement piece 3 as can be seen from the description below). Is desirable).
[0024]
Next, the four outer flaps 41, 41, 45, 45 are folded from the crease lines 71, 75, 91, 95 toward the gluing surface, and the packaging box 1 as shown in FIG. 2 is completed. This state corresponds to a so-called shipping box.
[0025]
The following description of the operation will be divided into an opening operation and a resealing operation.
[0026]
Opening operation When opening the packaging box 1 shown in FIG. 2, first, as shown in FIG. 3, the pair of outer flaps 41 and 45 are moved toward the inner flaps 31 and 35 in the outward direction indicated by the arrows. It is peeled off from the glued surface. The inner flap referred to in the present invention refers to a flap located inside in an unopened state (shipping box state), and the outer flap refers to a flap located outside in an unopened state (shipping box state).
[0027]
Next, as shown in FIG. 4, the pair of remaining inner flaps 31 and 35 are spread outward in the direction indicated by the arrows, so that the opening E for taking out the contents (container product) is greatly opened. At this time, the pair of flexible movable auxiliary portions 38 and 38 connected to the inner flaps 31 and 35 are also spread outward as in the case of the inner flaps.
[0028]
When the opening operation as shown in FIG. 4 is completed, a predetermined amount of contents (container product) is generally taken out, and then the flaps are resealed in order to store the remaining contents. Done. In recent years when consumers have made daily purchases of beer products (for example, canned beer) in cartons (packaging boxes), the need for such opening and resealing operations in the home is increasing. Is the current situation.
[0029]
Resealing operation As shown in Fig. 5, first, the outer flaps 41, 45 are closed towards the inward direction indicated by the arrows. When resealing, different from the state before opening, care must be taken to operate the outer flaps 41 and 45 to be closed first.
[0030]
Next, the inner flaps 31 and 35 are closed as shown in FIG. At this time, the outer flaps 41 and 45 and the inner flaps 31 and 35 are locked to perform resealing, and the resealing complete state shown in FIG. 7 is reached.
[0031]
The resealing mechanism for locking the outer flap and the inner flap, which is the main part of the present invention, will be described in detail below.
[0032]
Reseal mechanism The reseal mechanism according to the present invention includes, for example, engagement pieces 3 and 3 formed substantially in the vicinity of the front ends of the inner flaps 31 and 35, as shown in FIG. Engagement notch receiving portions 40 and 40 are formed by folding the outer flaps 41 and 45 with respect to the opening.
[0033]
For example, as shown in FIGS. 1, 4, and 5, notches 41 a and 41 b are formed at the corners of the outer flap 41 in the distal direction, and the corners of the outer flap 45 in the distal direction are cut. Notches 45a and 45b are formed. By folding the pair of outer flaps 41 and 45, a substantially bell-shaped engagement is obtained by combining the notches 41a and 45a and the notches 41b and 45b. Cutout receiving portions 40 are formed (particularly, see FIG. 5).
[0034]
The inner flaps 31 and 35 are respectively folded while inserting the engagement pieces 3 and 3 of the inner flaps 31 and 35 into the engagement notch receiving portions 40 and 40 thus formed (see FIG. 6). Thereby, the inner flaps 31, 35 and the outer flaps 41, 45 are locked, and the reseal operation is completed (FIG. 7).
[0035]
As shown in detail in FIG. 8, the engagement piece 3 formed in the vicinity of the tip of the inner flap 31 has a substantially trapezoidal shape including tapered portions 4 and 4 extending from the tip portion Tp of the inner flap to the inside. Yes. In the embodiment shown in FIG. 8, for example, the cuts 4 a and 4 a punched by using a cutting blade are separated. The word “substantial (trapezoidal shape)” means that the corners are rounded and the tapered portions 4 and 4 are not linear but are intentionally engaged with a small wave shape or protrusion shape. It is the meaning including the aspect which makes it more reliable.
[0036]
Further, the engagement piece 3 formed in the vicinity of the tip of the inner flap 31 is formed with perforations 4 'and 4' at positions corresponding to the tapered portions 4 and 4 in FIG. 8, as shown in FIG. When the locking operation of the inner flap and the outer flap is performed, the perforations 4 ′ and 4 ′ may be cut out and separated. In this case, as long as the perforations 4 ′ and 4 ′ exist (the state where the perforations are not cut), it can be said that the function as the engagement piece 3 cannot be developed yet. However, in order to include such an aspect without doubt in the technical scope of the present invention, it is expressed as “an engagement piece formed“ substantially ”near the tip of the inner flap” in the claims.
[0037]
Thus, when the taper portion is formed by the perforation, the strength of the box can be maintained, and there is almost no possibility that the paste applied to the upper surface of the inner flap enters the inside of the box at the time of the first assembly. .
[0038]
Further, the engagement piece 3 may be formed by completely separating the tapered portions 4 and 4 by the notches 4 ″ and 4 ″ as shown in FIG. In this case, the presence of the engagement piece 3 is immediately noticeable, and it is easy for the consumer to easily understand that the engagement operation is implied. Also, the engagement operation tends to be simpler, which is convenient.
[0039]
It is desirable that the taper portions 4 and 4 of the engagement piece 3 have a taper angle θ of 5 to 40 degrees, preferably 5 to 20 degrees (see FIG. 8). Due to the presence of such a tapered portion, when the engaging piece 3 is inserted into the engaging notch receiving portion 40, the engaging piece 3 pushes the outer flap (side portion of the engaging notch receiving portion 40) left and right, The basic effect of locking by utilizing the repulsive force appears. When the value of the taper angle θ is less than 5 degrees, it becomes difficult to insert the engaging piece 3 of the inner flap into the engaging notch receiving portion 40 and the engaging notch receiving portion 40 and the engaging piece 3 are inserted. There is a tendency that it cannot be sufficiently locked. If the value of θ exceeds 40 degrees, the engagement state between the engagement notch receiving portion 40 and the engagement piece 3 tends to become unstable.
[0040]
The shorter the length of the engagement piece 3, the smaller the influence on the reduction of the box strength, and the better. However, if it is too short, it cannot be locked when it is bent. From such a viewpoint, the length of the engagement piece 3 is desirably set within a range of 10 to 50 mm, preferably about 15 to 30 mm.
[0041]
Further, the engagement piece 3 in the present invention must be formed in consideration of the gluing area on the upper surface of the inner flap (the place where the outer flap is glued), and the tip of the inner flap as shown in FIG. It is limited to the vicinity position and the center line position. The width of the tip of the engagement piece 3 is preferably about 20 to 55 mm.
[0042]
Such a re-sealing mechanism is naturally also present at the bottom of the packaging box shown in FIGS. 2 to 7, as is clear from the development of FIG.
[0043]
In the embodiment of the present invention, as described above, a preferred embodiment is described in which the flexible movable auxiliary portion 38 having a substantially rectangular shape is interposed at a position where each inner flap is connected to the trunk portion.
[0044]
Due to the presence of the flexible movable auxiliary portion 38, the operation of inserting the engagement piece 3 of the inner flap into the engagement notch receiving portion 40 formed after the outer flap is folded can be performed very easily. That is, as shown in FIG. 6, due to the presence of the flexible movable auxiliary portion 38, the inner flaps 31 and 35 can be once moved largely outward (in the direction opposite to the arrow in the figure), and the subsequent operation. The operation of inserting the engagement piece 3 in the direction of the arrow becomes extremely easy. In other words, due to the presence of the flexible movable auxiliary portion 38, the degree of freedom of movement of the inner flaps 31 and 35 becomes extremely large.
[0045]
As is apparent from the drawing, in correspondence with the formation of the flexible movable auxiliary portion 38, the corner of the body portion to which the inner flap is connected is cut off (corresponding to the symbol H in FIG. 1). Therefore, the planar shape seen from the side surface 21 side in FIG. 6 is a modified octagon in which the corner of the box is cut off.
[0046]
Further, as shown in FIG. 8, the Lf / La value, which is the ratio of the engagement piece Lf formed in the vicinity of the front end of the inner flap to the length La in the movable direction of the flexible movable auxiliary portion 38, is 0.35 to 1. .77, particularly 0.5 to 1.5. The function of the flexible movable auxiliary portion 38 is sufficiently exhibited within the above range, and the engagement operation is remarkably improved.
[0047]
【The invention's effect】
The packaging box according to the present invention includes a pair of opening portions at both ends of a body portion that is left open after being stored so as to wrap a container product with a belt-shaped body portion formed by a plurality of side plates. A wrap-around type packaging box that is sequentially closed with an inner flap and an outer flap, and the packaging box is positioned at the end of the barrel by opening the outer flap and the inner flap in order to take out the container product. A re-sealing mechanism for locking the outer flap and the inner flap when the flaps are folded again in the order of the outer flap and the inner flap. The sealing mechanism includes an engagement piece substantially formed near the tip of the inner flap, and an engagement notch receiving portion formed by folding a pair of outer flaps with respect to the opening. After folding the flap Since the inner flap is folded so that the engagement piece of the inner flap is inserted into the formed engagement notch receiving portion, the inner flap and the outer flap are locked. After opening and taking out the contents, the unsealed take-out opening can be resealed without gluing by a very simple technique.
[Brief description of the drawings]
FIG. 1 shows an example of an exploded view of a packaging box according to the present invention.
2 is a perspective view of assembled box original paper developed as shown in FIG. 1; FIG.
FIG. 3 illustrates the situation from the time when the assembled packaging box is opened once to open and the contents are taken out to when the opened opening is simply sealed again. FIG.
FIG. 4 illustrates the situation from the time when the assembled packaging box is once opened to take out the contents and then the opened extraction opening is simply sealed again. FIG.
FIG. 5 is a perspective view for explaining the situation over time after the opening is once opened and the contents are taken out, and then the opened opening is simply sealed again.
FIG. 6 is a perspective view for explaining the situation over time after the opening is once opened and the contents are taken out, and then the opened opening is simply sealed again.
FIG. 7 is a perspective view for explaining over time the situation from when the opening is once opened to take out the contents and until the opened opening is simply sealed again.
FIG. 8 is a partially enlarged plan view (particularly corresponding to position A in FIG. 1) for explaining an embodiment of the engagement piece substantially formed near the tip of the inner flap.
FIG. 9 is a partially enlarged plan view (particularly corresponding to position A in FIG. 1) for explaining an embodiment of the engagement piece substantially formed near the tip of the inner flap.
FIG. 10 is a partially enlarged plan view (particularly corresponding to position A in FIG. 1) for explaining one form of the engagement piece substantially formed near the tip of the inner flap.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Packaging box 3 ... Engagement piece 11, 21, 15, 25 ... Side plate 31, 35 ... Inner flap 40 ... Engagement notch receiving part 41, 45 ... Outer flap

Claims (9)

In a wraparound type packaging box comprising a belt-like body portion formed by connecting a plurality of side plates, and an inner flap and an outer flap,
In order to take out the container product, the packaging box opens the outer flap and the inner flap in order to open the opening located at the end of the trunk, and then again the outer flap and the inner flap with respect to the opening. When folding each flap in this order, it has a reseal mechanism that locks the outer flap and the inner flap,
The reseal mechanism includes an engagement piece substantially formed near the tip of the inner flap, and an engagement notch receiving portion formed by folding a pair of outer flaps into the opening. ,
The engagement piece formed in the vicinity of the front end of the inner flap has a substantially trapezoidal shape including a tapered portion extending from the front end of the inner flap to the inside, and the engagement formed after the outer flap is folded. A packaging box, wherein the inner flap and the outer flap are locked by folding the inner flap so that the engagement piece of the inner flap is inserted into the notch receiving portion. The taper part in the said engagement piece is a packaging box of Claim 1 currently separated and formed by the notch | incision. The taper part in the said engagement piece is a packaging box of Claim 1 currently separated and formed by the notch. 2. The packaging box according to claim 1 , wherein the taper portion of the engagement piece has a perforation, and the perforation portion can be separated when the inner flap and the outer flap are locked. The packaging box according to any one of claims 1 to 4 , wherein the tapered portion has a taper angle of 5 to 40 degrees. A flexible movable auxiliary portion is interposed at a position where the inner flap is connected to the body portion, and the engagement of the inner flap with the engagement notch receiving portion formed after the outer flap is folded due to the presence of the flexible movable auxiliary portion. The packaging box according to any one of claims 1 to 5 , wherein the operation of inserting the pieces is facilitated. The packaging box of Claim 6 which makes the form where the corner | angular part of the trunk | drum by which an inner flap is connected is cut off corresponding to formation of the said flexible movable auxiliary | assistant part. Lf / La value is the ratio of the engaging pieces Lf formed in the vicinity of the tip of the inner flap to the length La of the movable direction of the flexible movable auxiliary unit, according to claim 7, which is 0.35 to 1.77 Packaging box. The packaging box according to any one of claims 1 to 8 , wherein the container product is canned beer.

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