JP2001315750A - Erectable curved packaging container made of paper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an erectable curved packaging container made of paper capable of being stably placed in the state that the wide surface walls thereof are made vertical without losing the beneficial point of the packaging container for trout Sushi or the like. SOLUTION: In the erectable curved packaging container having edge folds corresponding to flatly folding operation formed both left and right ends thereof, bottom part turning in walls brought to a close contact state by folding are provided to the inner surfaces of the lower ends of both surfaces walls by providing horizontal turning-in lines to the lower ends of both surface walls and a bottom part wall coming into contact with both surface walls by curved folds is formed to the bottom part turning in walls and a middle fold is provided to the bottom part wall. This packaging container is constituted by assembling rigid cardboard. Since this packaging container can be stably erected in such a state that the curved surface walls made of paper thereof are made vertical, a space can be effectively utilized by arranging the packaging containers side by side in transport/keeping or display in the shopwindow, and since the taking in and out of content or folding is easy and the on-off operation of a lid piece at the lower end of the packaging container becomes unnecessary, the packaging container can be folded or unfolded by one-touch operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an upright paper curved packaging container having improved packaging of, for example, Toyama Masushi, which is known as a famous product.

[0002]

2. Description of the Related Art Toyama sushi is a pressed sushi that is packed in a shallow bottomed bent container, wrapped in kumasasa and sushi rice with sliced meat, and compressed with a lid.
In order to maintain the compressed state, two bamboo bars are passed up and down, and one pair of the bamboo bars is attracted by rubber bands at both ends. Since such a primary package made of a bent product is flat, the secondary package made of a paperboard container is also flat. Therefore, a special packaging mode is adopted in consideration of simplicity.

[0003] In this regard, conventional packaging containers for sushi and the like are premised on stacking with flat surfaces up and down. As shown in FIG. 41, 41, the other end of which serves as a mouth 42, 42 for taking in and out sushi, etc., both of which are substantially arc-shaped curved portions of the moon (the same shape as the upper end portion of the embodiment of the present invention). And both face walls 41, 41
Since the lid pieces 44, 44 are continuously held open and closed by the shape of the curved folding line 45, the contents can be easily taken in and out, and folding and folding can be easily performed. Although it has the property, it could not be erected from any of the four sides down from this structure.

[0004]

Accordingly, there has been a problem in conventional transportation, storage, sale, display, and the like of sushi and the like that there is a restriction that the sushi cannot be arranged side by side when standing up. Regarding this point, in the case of sushi or the like, as described above, since the food is delivered to the consumer while maintaining a stable state of pushing, there is no problem even if the bent container is turned sideways. In general, it is more convenient to put contents in and out with the mouth up.

The present invention has been made in view of the above-described circumstances,
It is an object of the present invention to provide an upright, curved paper container which can be stably placed with its wide surface vertical and without losing the advantages of packaging containers such as sushi.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a paper curved packaging container provided with flat foldable lines at both left and right ends. By providing a folding line, a bottom folding wall which is folded and closely attached to the inner surface at the lower end of the face wall is continuously provided, and the bottom folding wall is formed with a bottom wall which is in contact with both sides walls with a curved folding line, and is folded on the bottom wall. An upright, curved paper packaging container assembled from rigid paperboard with corresponding mid-fold lines was constructed.

According to the above configuration, the contents are received by the bottom wall in the upright state. The bottom wall is formed on the bottom folding wall surrounded by the horizontal folding line, and the folding line serves as the lower end of the container, so that the standing state can be stably maintained. Further, since the container material is a paperboard or the like having a certain rigidity, the fold of the bottom folding wall is held as it is without any adhesive means, and the folded state (use state) of the container is stabilized based on the shape of the bottom wall. Is held. In addition, unlike the present invention, when the container material is a flexible material such as a film, the contents cannot be opened and held unless the contents are put therein. There were problems such as the contents being difficult to hold and the contents popping out. Further, when the contents are taken in and out by opening and closing the upper lid piece, the lid piece has no rigidity, so that the folded lid shape cannot be maintained even when the lid is folded.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, a curved paper-made packaging container has a folded shape in which both side walls 1, 1 are joined by closing the edge folding lines 3, 3 at both ends. Even when it is provided (claim 2), it can be folded if the edge folding line 3 is formed therebetween. In this case, the side wall 23 is refracted by the square fold line 21 with respect to the face wall 1. In the embodiment described later (FIGS. 11 and 12), it can be said that it is a hexagonal state in which four square fold lines 21 and two edge fold lines 3 are combined along the entire circumference. Is possible.

For the container material, rigid paperboard is basically used for packaging. In a special case, however, paper and a composite structure of resin, sheet, foam sheet, nonwoven fabric, woven fabric and the like are used. May be used, and paperboard includes cardboard made of paper, which can be used effectively. In the present invention, all of these are expressed as "paperboard".

[0010] As described above, the container of the present invention is an improved version of a packaging container for sushi or the like in Toyama, but is not limited to food packed in bent containers, but also packed in plastic containers or film packs. , And clothing, sundries,
The paper-made curved packaging container of the present invention can be effectively used for containers for cosmetics and the like.

[0011]

As described above, according to the upright paper curved packaging container of the present invention, the paper curved surface wall can be stably erected vertically, so that it can be transported, stored, or displayed at stores. It is possible to effectively use the space by arranging horizontally, and it is easy to put in and out and fold the contents, and it is not necessary to open and close the lid piece at the lower end, so it can be folded and opened with one touch There is an excellent effect that can be achieved.

[0012]

Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 to FIG. 4 show an embodiment of the present invention.
The two-sided walls 1 and 1 are connected at both ends by edge-folded fold lines 3 and 3, respectively, and have a bottom wall 5 at a lower end and a pair of lid pieces 7 and 7 at an upper end.

As shown in FIG. 2, the double-sided walls 1 and 1 are arranged up and down with a bottom folded wall 4 therebetween. At one end, lid pieces 7, 7 protrude through curved fold lines 8, 8. In addition, glue margins 11 are protrudingly provided at the left and right ends of one face wall 1 via the edge folding lines 3.

The bottom folding wall 4 is a rectangle which is horizontally long between a pair of parallel straight folding lines 6 and 6, and the bottom wall 5 has a pair of curved folding lines 9 at the center of the bottom folding wall 4. , 9 and both ends reach both ends of the bottom folding wall 4, and a middle folding line 10 is formed between both ends. The curved fold lines 9, 9 and the center fold line 10 form a mountain fold when viewed from above.

Therefore, when assembling the glue allowances 11 and 11 to the other face wall 1 and assembling them, when the bottom folded wall 4 is pushed inward, the bottom folded wall 4 is brought into close contact with the inner surfaces of the two side walls 1 and 1 and the bottom wall 5 is interposed therebetween.
Occurs in a raised manner (FIG. 3). In this assembled state, when the bottom wall 5 is pushed upward, it is
By folding in two directions (Fig. 4),
The two side walls 1 and 1 are combined into a thin folded shape. Conversely, when the bottom wall is pushed open between the two side walls 1 and 1 (FIG. 3), the bottom wall 5 returns to the flat state from the two-fold state, and becomes a folded shape as a container use form (FIGS. 1 and 3). .

FIGS. 5 to 7 show another embodiment. In this case, the double-sided walls 1, 1 are arranged side by side on the left and right, and the bottom folded walls 4, 4 are respectively provided at the lower ends of both sides. , 6 and the bottom walls 5, 5a
Is protruded. At the upper ends of the double-sided walls 1, 1, lid pieces 7, 7 are protrudingly provided, but the bottom walls 5, 5 a and the lid pieces 7, 7 are formed in substantially the same aperture shape, respectively. One side is curved bent lines 8 and 9.

When glue allowance 11 at one end is bonded to the other end for assembling, if both bottom folding walls 4, 4 are inserted inside by folding lines 6, 6, both bottom walls 5, 5a overlap ( (FIG. 7). Since the middle folding line 10 is formed only on the lower one of the bottom walls 5 and 5a, the bottom is greatly strengthened by the upper bottom wall 5a. When folded, the lower bottom wall 5 is folded in two in a mountain shape, but the upper bottom wall 5a is entirely inverted and joined to one face wall 1.

Further, a pair of pores 13 and 13 are formed in the upper ends of the double-sided walls 1 and 1 and both ends are stopped.
A pair of hand straps 15, 15 are attached.

When a double wall is formed as in the above embodiment, as shown in FIG. 8, the projection 19 can be formed by a part of the upper bottom wall 5a. FIG.
9 is indicated by a two-dot chain line, and the bottom wall 5
The central portion of a is cut and raised in a band shape, folded into a trapezoidal shape, and the front end portion 20 is adhered to the bottom wall 5 below. In addition, this protrusion 19
Can support the contents at the center of the body of the container, and also acts to reduce external impact on the contents.

As shown in FIGS. 9 and 10, a handle 50 connected to the cover pieces 7, 7 may be provided instead of the hand straps 15, 15. As shown in FIG. Similarly, it goes without saying that such a handle 50 can also be provided in the embodiment shown in FIG. In FIG. 9, reference numeral 51 denotes a handle counterbore.

FIG. 11 and FIG. 12 show still another embodiment. In the conventional case (FIG. 17), the lid piece 4
Sharp corners 46, 46 are formed at both ends of the opening 42 that is opened and closed by the openings 4 and 44 (the same applies to the previous embodiment). In this embodiment, corner fold lines 21 and 21 are formed on both sides of the edge fold lines 3 at both ends so that a wide content can be stored while taking a corner for safety. It is configured so that the side wall 23 is formed between the portions 21.

In this case as well, the front and rear side walls 23, 23 are bent and opened by the curved fold lines 8, 9 of the lid piece 7 and the bottom wall 5, but the lid piece 7 and the bottom wall 5 are opened. Are cut off by straight lines at both ends, so that both side walls 2
3, 23 are opened substantially flat. Also, both side walls 23, 23
Has an inner flap 25, 25 which is folded inward at the upper end, and the flat shape of the side walls 23, 23 is also maintained by this folding. Furthermore, joining pieces 26, 26 with the side walls 23, 23 are formed at the lower ends of the side walls 23, 23,
Thereby, airtightness is provided.

In each of the above embodiments, rigid paperboard (including cardboard made of paper) is used as a material.
As shown in FIG. 14, a water-resistant adhesive layer 29 obtained by heat-sealing or laminating a polyethylene film or the like is provided on the surface of a material 28 such as paperboard to provide airtightness, or a single-sided cardboard 30 is used as shown in FIG. Sometimes. Further, as shown in FIG. 15, the functional material 31 may be put in the shape of an inner bag inside the material 28, that is, inside the container. Examples of the bag of the functional material 31 include a general plastic bag, a barrier bag made of an aluminum vapor-deposited bag, an aluminum foil composite bag, a zipper bag, a heat insulation bag made of an air cap, and a heat insulation bag made of polyethylene foam. Can be.

As shown in FIG. 16, there may be a form in which the lid pieces 7, 7 are not provided at the upper end. In this embodiment, a material obtained by laminating a resin such as polyethylene on a rigid paperboard in the form of a film is used, and the margins 11, 11 provided continuously on both sides are heat-sealed using the resin surface. Thereby, airtightness can be obtained except for the opening, so that a foldable paper cup or the like that can store liquid or powder can be configured.

[Brief description of the drawings]

FIG. 1 is a bottom perspective view of a stand-up paper curved packaging container according to the present invention.

FIG. 2 is a development view of the container.

FIG. 3 is a sectional view taken along line AA of FIG. 1;

FIG. 4 is a longitudinal sectional view showing a folded state of the container.

FIG. 5 is a perspective view from above of a stand-up paper curved packaging container showing another embodiment.

FIG. 6 is a development view of the container.

FIG. 7 is an enlarged sectional view taken along line BB of FIG. 5;

FIG. 8 is a sectional view of a position corresponding to FIG. 7 showing another embodiment.

FIG. 9 is an exploded view of an upright curved paper packaging container showing still another embodiment.

FIG. 10 is a perspective view of the container.

FIG. 11 is a perspective view of an upright curved paper packaging container showing still another embodiment.

FIG. 12 is a development view of the container.

FIG. 13 is a sectional view showing an example of a container material.

FIG. 14 is a sectional view showing another example of the container material.

FIG. 15 is a cross-sectional view showing a functional material in a container.

FIG. 16 is an exploded view of a standing curved paper packaging container showing still another embodiment.

FIG. 17 is a plan view of a curved paper container showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Face wall 3 Edge folding line 4 Bottom folding line 5 Bottom wall 6 Folding line 7 Lid piece 8, 9 Curved folding line 10 Middle folding line 15 Hand strap 21 Square folding line 23 Side wall

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B65D 85/50 B65D 85/50 E

Claims (5)

[Claims] 1. A paper curved packaging container provided with a flat folding line at both left and right ends thereof, and a horizontal folding line provided at a lower end of a double-sided wall so that the bottom portion is folded and closely attached to an inner surface of a lower end of the surface wall. Assembling with rigid paperboard characterized by having a series of folding walls, forming a bottom wall in contact with curved folding lines on both side walls on the bottom folding wall, and providing a center folding line corresponding to folding on the bottom wall Upright paper curved packaging container. 2. A stand-up paper curved packaging container according to claim 1, wherein both side walls are formed between the two side walls so as to be folded in half by the edge folding line. 3. A stand-up curved packaging container made of paper according to claim 1, wherein a functional material for enhancing the function of the container is provided inside the container in a bag shape. 4. A water-resistant adhesive layer is formed on one or both sides of a container material made of rigid paperboard, and a heat-sealing or the like is enabled by continuously providing a paste margin made of this material.
4. The standing paper curved packaging container according to claim 1, wherein the adhesive margin is sealed by airtightness. 5. The upright, curved paper packaging container according to claim 1, wherein the container is provided with a handle or a hand strap.