JP2002166921A - Packing case - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packing case which can be formed with a top plate so that contents are not damaged by an insert piece inserted into a slit. SOLUTION: A pair of first opposite top plate flaps 5 and 7 which are to be positioned inside when the top plate is closed are formed with tabs 5x and 7x which can lower with respect to the flaps 5 and 7 by cut lines 5y and 7y. A pair of second opposite top flaps 6 and 8 which are to be overlaid on the first top plate flaps 5 and 7 and positioned outside when the top plate is closed are formed with insert pieces 6x and 8x to be inserted in the rear of the first flaps 5 and 7 at a lowered position of the tabs 5x and 7x.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to four continuous rectangular side plates, a top plate flap connected to the upper side of each side plate to form a top plate, and a bottom plate connected to the lower side of each side plate. The present invention relates to a packing case assembled from corrugated paperboard having a bottom plate flap forming a bottom plate.

[0002]

2. Description of the Related Art As such a packing case, there is a case in which a top plate is formed by bonding a top plate flap with an adhesive. However, it is desirable to form the top plate without using an adhesive from the viewpoint of saving the adhesive and reducing the manufacturing cost by omitting the step of applying the adhesive. Therefore, a packaging case is used in which a cut line is formed in a pair of opposed top plate flaps, and an insertion piece is formed in the remaining pair of top plate flaps. In this packing case, the top plate is formed by inserting the insertion piece of the top plate flap from the outside from the cut line of the top plate flap bent inward first.

However, when the insertion piece is inserted into the slit, there is a possibility that the contents such as potatoes may be damaged by the tip of the insertion piece.

[0004]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a packaging case capable of forming a top plate so that contents are not damaged by an insertion piece inserted into a slit.

[0005]

According to a first aspect of the present invention, there is provided a packing case for cutting a pair of first top flaps, which are inside when the top plate is closed, with a cut line. A tongue piece that can be lowered with respect to the first top plate flap is formed, and a pair of opposed second top plate flaps that are superimposed on the first top plate flap and become outside when the top plate is closed are provided with the tongue. An insertion piece inserted into the first top plate flap is formed at the lower position of the piece.

According to the present invention, when the top plate is closed, first,
Each of the pair of first top plate flaps is bent inward with respect to the side plate. Next, each of the pair of second top flaps is bent inward with respect to the side plate, and the insertion piece is inserted into the back side of the first top flap at the lower position of the tongue. When there is a content near the tongue piece, the content is pushed away by the lowering of the tongue piece, and a space is created. Since the insertion piece enters this space, damage to the content due to the insertion piece can be avoided.

In a packing case according to a second aspect of the present invention for solving the above-mentioned problems, a pair of opposed top plate flaps are formed in the side plate by a substantially U-shaped cut line starting from the side plate side. A fold line is formed at the outermost portion which is divided into an outer portion and an inner portion which are continuously provided, and which is the innermost portion when the top plate is closed, and which has a front end portion folded inward. The remaining pair of opposing top flaps that are overlapped with the part can be lowered to the remaining pair of top flaps by a score line at a position corresponding to the tip of the outer part that is folded inward. A tongue is formed, and when the top is closed, the outermost inner portion overlapped with the pair of top flaps and inserted into the top flap at the lowered position of the tongue is inserted. It is characterized in that a piece is formed.

According to the present invention, first, when the top plate is closed,
The substantially U-shaped outer portions of the pair of top plate flaps are bent inward with respect to the side plates, respectively, and the distal ends of the outer portions are folded inward along the folding lines. If there is a content at the position where the distal end of the outer portion is folded, the content is pushed away by the distal end to create a space. Next, the remaining pair of top plate flaps are each bent inward with respect to the side plate, and overlapped with the outer portion. Subsequently, the inner portions of the pair of top flaps are bent inward with respect to the side plates, and the insertion piece is inserted into the back side of the top flap at the lower position of the tongue. As described above, since the insertion piece enters the space formed by pushing the content away by the folded distal end portion of the outer portion, damage to the content due to the insertion piece can be avoided.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a packing case according to the present invention will be described with reference to the drawings. FIGS. 1, 3, and 5 are exploded views of the packing cases of the first, second, and third embodiments, respectively. FIGS. 2, 4, and 6 are the first, second, and third embodiments, respectively. It is explanatory drawing at the time of the top plate closing of a packing case.

First, the packing case of the first embodiment will be described with reference to FIGS. The packing case of the first embodiment is assembled from corrugated paperboard shown in FIG. This corrugated paperboard is composed of four substantially rectangular side plates 1 connected in series.
And top flaps 5 to 8 connected to the upper side of each side plate 1 to 4 and forming a top plate, and bottom plate flaps 9 to 12 connected to the lower side of each side plate 1 to 4 and forming a bottom plate And Adhesive pieces 13 are continuously provided on the left side of the side plate 1.

Of the four top flaps 5 to 8, the top flaps 5 and 7 constitute the "first top flap" of the present invention, and the top flaps 6 and 8 correspond to the "second top flap" of the present invention. Flap ". After descending from the upper edge of the first top flaps 5 and 7, it descends while drawing an oblique curve, and can further descend with respect to the first top flaps by cutting lines 5y and 7y extending horizontally. Simple shoe-shaped tongue piece 5x, 7
x is formed two by two. Second top plate flaps 6, 8
Is a roughly hoe-like shape with the tip part divided into three parts with space, and the central divided part is the "insertion piece" 6x, 8x of the present invention.
Is configured. Also, the second top plate flaps 6 and 8 are mountain-folded so that the insertion pieces 6x and 8x can be aligned with the insertion positions of the first top plate flaps 5 and 7, that is, the cut lines 5y and 7y. , 8y are formed. The bottom plate flaps 9 to 12 are cut out in a substantially triangular shape only on the right side, and have a substantially trapezoidal shape with a narrow end.

When assembling the packing case of the first embodiment from the corrugated paperboard shown in FIG.
Are bent into a substantially rectangular cylindrical shape, and the side plate 4 is overlapped and bonded to the bonding piece 13 bent with respect to the side plate 1. Next, the bottom plates flaps 9 to 12 are engaged in a substantially quadrangular shape, and the bottom plate is closed. At this stage, contents (not shown) are stored in the packing case. Subsequently, FIG.
As shown in (a), the first top plate flaps 5, 7 are side plates 1,
3 is bent inward. Next, as shown in FIG. 2B, the second top plate flaps 6 and 8 are bent with respect to the side plates 2 and 4, and then are mountain-folded along the mountain fold lines 6y and 8y. At this time, as shown in an enlarged manner at the upper right of FIG. 2B, the tip of the insertion piece 6x, 8x moves the corresponding tongue piece 5x, 7x down, and the first top from between the cutting lines 5y, 7y. The flaps 5 and 7 are inserted. And the second
When the top plate flaps 6 and 8 are changed from the mountain folded state to the flat state,
The insertion pieces 6x and 8x are inserted into the backs of the first top flaps 5 and 7, and the top is closed as shown in FIG. 2C. If there is a content close to the tongue pieces 5x, 7x, the lowered tongue pieces 5x, 7x slightly displace the contents to form a space, and the insertion pieces 6x, 8x enter into this space. 6x, 8x can prevent the contents from being damaged.

Next, a packing case according to a second embodiment will be described with reference to FIGS. The packaging case of the second embodiment is assembled from corrugated paperboard shown in FIG.
Since the configuration is similar to that of the first embodiment, the same reference numerals are used for the corresponding components, and the description will be appropriately omitted. In the packing case of the second embodiment, two tongue pieces 5x, 7x are respectively formed on the first top plate flaps 5, 7 by cut lines 5y, 7y. The two tongue pieces 5x are formed so as to be bent perpendicular to each other with respect to the first top plate flap 5. Similarly, the two tongue pieces 7x are also formed so as to be bent perpendicular to each other with respect to the first top plate flap 7. The second top plate flaps 6 and 8 are formed with two insertion pieces 6x spaced at intervals corresponding to the tongue pieces 7x and 5x, and two insertion pieces 8x similarly spaced at the same time. In addition, the bottom plate flaps 10 and 12 which are outside when the bottom plate is closed are substantially trapezoidal, and two ear pieces x projecting outward from both ends of the upper bottom are formed. Further, the bottom plate flaps 9 and 11 which are inside when the bottom plate is closed are substantially rectangular, and are formed with two slits y which gradually separate upward.

When assembling the packing case of the second embodiment from the corrugated paperboard shown in FIG.
Are bent into a substantially rectangular cylindrical shape, and the side plate 4 is overlapped and bonded to the bonding piece 13 bent with respect to the side plate 1. Next, the bottom plate flaps 9 to 12 are engaged by inserting each ear piece x into the corresponding slit y, and the bottom plate is closed. At this stage, contents (not shown) are stored in the packing case. Subsequently, as shown in FIG. 4A, the first top plate flaps 5 and 7 are bent inward with respect to the side plates 1 and 3. Next, all the tongue pieces 5x, 7x are bent so as to be overlapped inward with respect to the first top plate flaps 5, 7. Subsequently, as shown in FIG. 4B, the second top plate flaps 6 and 8 are bent inward with respect to the side plates 2 and 4, and are then folded by the mountain fold lines 6y and 8y. FIG.
As shown in the enlarged view at the upper right of (b), two insertion pieces 6x,
Tongue pieces 7x each corresponding to the tip of two insertion pieces 8x,
At the descending position of 5x, it is inserted into the back of the first top plate flaps 5, 7 from between the cut lines 5y, 7y. Then, when the second top plate flaps 6 and 8 are changed from the mountain folded state to the original flat state,
The insertion pieces 6x and 8x are further inserted into the first top plate flaps 7 and 5, and the top plate is closed as shown in FIG. 4C. If there is a content close to the tongue pieces 5x, 7x, the contents are pushed away by the lowered tongue pieces 5x, 7x, and a space is created. Since the insertion pieces 6x, 8x enter this space, the insertion piece 6x, 8x can prevent the contents from being damaged.

In the packing case of the first embodiment, the tongue pieces 5x and 7x are located at a position near the center of the top plate which is slightly distant from the side plates 2 and 4 as shown in FIG. In FIG. 4B, it is located near the side plates 2 and 4 as shown in FIG. Therefore, by selecting the packing case of these two embodiments, the tongue piece 6 can be selected according to the shape and the packing condition of the contents.
x and 8x insertion positions can be selected.

Next, a packing case according to a third embodiment will be described with reference to FIGS. The packing case of the third embodiment is assembled from corrugated paperboard shown in FIG.
This corrugated paperboard has four substantially rectangular side plates 1-4.
Top plate flaps 5 to 8 are provided continuously on the upper side of each side plate 1 to 4 and form a top plate, and bottom plate flaps 9 to 12 are provided on the lower side of each side plate 1 to 4 and form a bottom plate. I have. Adhesive pieces 13 are continuously provided on the left side of the side plate 1.

Among the four top flaps 5 to 8, the top flaps 6 and 8 are formed by the substantially U-shaped cut lines 6s and 8s starting from the side plates 2 and 4, respectively. Outer portions 6a, 8a and inner portions 6b,
8b. Folding lines 6z, 8z are formed in the outermost portions 6a, 8a, which are the innermost portions when the top plate is closed, to fold the tips inward. The remaining pair of opposing top plate flaps 5 and 7 that are superimposed on the outer portions 6a and 8a when the top plate is closed have cut lines at positions corresponding to the tips of the inwardly folded outer portions 6a and 8a. 5y, 7
The tongue pieces 5x and 7x that can be lowered by y are formed. When the top plate is closed, the outermost inner portions 6b, 8b which are superimposed on the pair of top plate flaps 5, 7 are provided with mountain fold lines 6y, 8y and the tongue pieces 5x, 7x at the descending positions of the top plate flap 5, , 7 are formed with insert pieces 6x, 8x to be inserted.

When assembling the packing case of the third embodiment from the corrugated paperboard shown in FIG.
Are bent into a substantially rectangular cylindrical shape, and the side plate 4 is overlapped and bonded to the bonding piece 13 bent with respect to the side plate 1. Next, the bottom plate flaps 9 to 12 are engaged by inserting each ear piece x into the corresponding slit y, and the bottom plate is closed. At this stage, contents (not shown) are stored in the packing case. Subsequently, as shown in FIG. 6A, the outer shells 6a and 8a are bent inward with respect to the side plates 2 and 4, respectively, and the distal ends of the outer shells 6a and 8a are separated by a pair of folding lines 6z and 8z. It is folded inward into a substantially U-shape. If there is a content at the position where the tip is bent, the content is pushed away by the tip to create a space. Note that the folding lines 6z and 8z may be one instead of two, and the distal ends of the outer portions 6a and 8a may be folded inward into a substantially rectangular shape by the pair of folding lines 6z and 8z.

Next, as shown in FIG. 6 (b), the top plate flaps 5 and 7 are bent inward with respect to the side plates 1 and 3, respectively, and are superimposed on the outer shell portions 6a and 8a. Subsequently, the inner hull portions 6b, 8b are in a mountain fold state at the mountain fold lines 6y, 8y, and the insertion pieces 6x, 8x are connected to the top flaps 5, 7 as shown in an enlarged manner at the upper right of FIG. 6B. The tongue pieces 5x, 7x are aligned. Then, the insertion pieces 6x, 8x are inserted into the back of the top flaps 5, 7 by changing the second top flaps 6b, 8b from the mountain-folded state to the flat state as shown in FIG. 6C. Thereby, the top plate is closed. Since the insertion pieces 6x, 8x enter the space formed by pushing the contents inward by the front end portions folded inward of the outer shell parts 6a, 8a, damage to the contents due to the insertion pieces 6x, 8x can be avoided.

[Brief description of the drawings]

FIG. 1 is an expanded view of a packing case according to a first embodiment.

FIG. 2 is an explanatory view of the packing case of the first embodiment when the top plate is closed.

FIG. 3 is an expanded view of a packing case according to the second embodiment.

FIG. 4 is an explanatory view of the packing case of the second embodiment when the top plate is closed.

FIG. 5 is an expanded view of a packing case according to a third embodiment.

FIG. 6 is an explanatory view of the packing case of the third embodiment when the top plate is closed.

[Explanation of symbols]

1-4 top plate, 5, 7 first top plate flap, 6, 8 {second top plate flap, 6a, 8a {outer portion, 6b, 8b}
Inner shell part, 5x, 7x {tongue piece, 5y, 7y} cut line, 6
x, 8x {insert, 6y, 8y fold curve, 6z, 8z}
Folding line, 6s, 8s ‥ C-shaped cut line, 9-12
‥ Bottom plate flap

Claims (2)

[Claims] 1. Four continuous rectangular side plates, a top plate flap connected to an upper side of each side plate to form a top plate, and a bottom plate connected to a lower side of each side plate to form a bottom plate. A packaging case assembled from a corrugated paperboard having a bottom plate flap, wherein a pair of opposed first top flaps which are inside when the top plate is closed are lowered with respect to the first top plate flap by cut lines. A possible tongue is formed, and a pair of opposing second top flaps which are superimposed on the first top flap and become outside when the top is closed are provided with the first top in a lowered position of the tongue. A packing case, wherein an insertion piece inserted into the flap is formed. 2. A four-sided rectangular side plate, a top plate flap connected to an upper side of each side plate to form a top plate, and a bottom plate connected to a lower side of each side plate to form a bottom plate. A packaging case assembled from corrugated paperboard having a bottom plate flap, wherein a pair of opposed top plate flaps are connected to the side plate by a substantially U-shaped cut line having the side plate side as a base end. A fold line is formed at the outermost portion that is innermost when the top plate is closed, and a fold line that folds its tip portion inward is formed when the top plate is closed. A tongue that can be lowered with respect to the remaining pair of top flaps by a score line at a position corresponding to the tip of the outer shell portion that is folded inward is provided on the remaining pair of top flaps. When the top plate is closed, the remaining pair of top plate flashes A packing case, wherein an insertion piece to be inserted into the top plate flap at a lower position of the tongue piece is formed in the innermost outermost portion overlapped with the lid.