JP6850082B2 - Packaging container with medium container - Google Patents

Description

The present invention mainly relates to a packaging container having at least a container body for storing food, and also to a packaging container including a container body, a middle container stored in the container body, and a lid covering the inner container. It is to be mentioned.

For example, a packaging container composed of a container body, an inner container housed in the container body, and a lid covering the inner container is generally called a "three-point container". The food to be packaged can be packaged while distinguishing between the container body and the inner container, and various uses are made because of the merit that each food can be partitioned. In addition, each part of this type of "three-point container" is often manufactured from a synthetic resin sheet so that it can be used as a disposable container.

The applicant has also proposed various "three-point containers" (packaging containers having a medium container) according to the purpose in Patent Document 1 and the like, and also in Patent Document 2 and Patent Document 3. A "three-point container" according to the purpose has been proposed.

JP-A-2009-107725, Abstract Utility Model Registration No. 3031841 Utility Model Registration No. 3052893 Japanese Patent Application Laid-Open No. 05-64836, Abstract

The "packaging container having a medium container" proposed by the applicant in Patent Document 1 "prevents oil and liquid dripping from the freshly prepared container itself from being absorbed into the container again. It was made for the purpose of "providing a container for packaging that can be made by a simple structure", and as shown in FIG. 10, "a container body 10 having a support portion 12 for supporting an object from above and a support portion". It includes an inner container 20 that is supported by a locking portion on the top and has a through hole at the bottom, and a lid 30 that is locked to the container body or the inner container side. " As shown above, "the legs are formed to bulge at the corners of the bottom surface 21 of the container body, and the central portion of the bottom surface 21 of the container body is slightly bulged downward." The "three-point container" proposed in Patent Document 1 does not separately partition and store the stored items, but "oil or liquid dripping from the freshly prepared stored items themselves" is placed below the middle container 20. It is intended to be dropped into.

As shown in FIG. 11, the "noodle container", which is a three-point container proposed in Patent Document 2, is "a medium container formed from a non-foaming synthetic resin sheet for containing ingredients and cooking. In a food packaging container consisting of a highly heat-insulating outer container molded from a foamed or non-foamed synthetic resin sheet for containing finished noodles, a part of the bottom surface of the inner container is molded into a deeper recess that can store a soup bag. The bottom surface of the recess is lower than the bottom surface of the other part of the inner container so that the recess is immersed in the hot water poured to warm the noodles. " is there.

As described in paragraphs 0004 to 0005 of the document 2, the "noodle container" of the patent document 2 "actively warms the soup with hot water for warming the noodles (of the prior art referred to in the patent document 2). For the noodle container, cut out a part of the middle container, fit the cup in the cut hole, store the soup in the cup, seal the upper edge of the cup with a film etc. Soak the noodles in the hot water that was put in to warm the noodles, warm the soup stored inside with the heat of this hot water, then discard the hot water that warmed the noodles, and put the new noodles outside. This is a method of pouring hot water into a container and then adding warm soup. The noodle container of the above method is ... The soup manufacturer has to seal the soup after filling it, or use a special cup to prepare the soup. Compared to the method of storing in a bag, it is inevitable that the manufacturing process will be complicated and the manufacturing cost will increase. On the other hand, it is not preferable in terms of hygiene management and hygiene. " As a result of the above, "It is economical and easy to heat the soup without adding special equipment, and it effectively lowers the temperature of the hot water when the soup is mixed at the time of eating. It was possible to provide a noodle container for hot water noodles to prevent it.

Further, as shown in FIG. 12, Patent Document 3 states that "a packaging container molded from a synthetic resin material and having at least a lower container, an inner container and a lid, and a locking portion on the mouth edge of the lower container. Is provided, and a convex portion that can be locked to the locking portion is provided on the hanging portion formed on the rim of the lid, and the end of the rim can be locked to the hanging portion of the lid in the inner container. A "packaging container characterized by having a structure" has been proposed, and this "packaging container" is a "packing container consisting of a lower container, a middle container, and a lid, from the lower container to the middle". It was proposed as having the above configuration for the purpose of providing a packaging container that makes it easy to remove the container and can stably support the inner container.

In short, the "three-point container" conventionally proposed in Patent Documents 1 to 3 and the like is
-Prevents oil and liquid dripping from the freshly made stored items (food) themselves from being absorbed into the stored items again (Patent Document 1).
-It is economical and easy to heat the soup without the need to add special equipment, and it effectively prevents the temperature of the hot water from dropping when the soup is mixed during eating (Patent Document 2).
-The inner container can be easily removed from the lower container (the container body referred to below), and the inner container can be stably supported (Patent Document 3).
The basic idea is to store the stored items (food) individually by partitioning the storage space by the container body and the inner container.

Of course, it makes sense to store multiple types of stored items or food individually in multiple parts partitioned by the container body and the inner container, but with regard to this type of "three-point container" What consumers want in recent years has changed:

In recent years, consumers have been hoping for a "three-point container" made of synthetic resin sheet, from a simple "disposable image" to "I want to enjoy a meal that makes you feel a little luxurious" or "This container is for the whole dish. It is changing like "I want to feel that luxury is being produced", and at the same time, it is necessary to have a reason that "it has reasonable cost performance". On the other hand, the above-mentioned conventional "three-point container" has the efficiency of being able to pack various foods eaten by consumers tightly without any gaps, but has a dislike of lacking luxury. I can't deny that.

In other words, consumers have a desire to "eat out" rather than "meal" after buying a so-called "convenience store lunch", but on the other hand, "kaiseki" in a lacquered container for eating out. I don't want to spend as much money as eating "cooking" or "donburi". It is wasteful to spend money on the use of the container itself, and if the container itself is cheap, it cannot be a luxurious meal.

この表１から分かるように、米飯商品である「丼・重」は、２０１２年秋から２０１５年秋までの３年間で約９％上昇しており、同時期の「弁当」では、約１５％下降していて、近年「丼・重」が店内で食されるものとして人気が高まってきている。 According to a survey by the present inventors, as shown in Table 1 below, "donburi" and "heavy foods" that use cooked rice have come to be preferred as foods to be eaten in the store. ing. In Table 1, the number of cooked rice products eaten in the store is counted as "don / heavy" (donburi and heavy goods using rice), "lunch box", and "others", and the results are counted. Is expressed in%.

As can be seen from Table 1, rice bowls and heavy foods increased by about 9% in the three years from autumn 2012 to autumn 2015, and decreased by about 15% in bento boxes during the same period. In recent years, "don / heavy" has become more popular as something to be eaten in the store.

On the other hand, for a store that makes and sells such eating out, if the manufacturing work cannot be easily performed, even if a "three-point container" as a disposable container is adopted, the cost of providing food will be charged. The decline cannot be made more strongly. This is because consumers who want to eat out are concentrated at the time of meals, so it is necessary to be able to serve food within a short time.

In addition, as described above, for customers who eat in the store, if the container itself is cheap, they do not feel that they have eaten luxuriously. Therefore, "3" molded from a synthetic resin sheet as a material. I want you to be able to enjoy it as a luxurious meal to some extent even if it is a "dotted container". In that case, it is conceivable to add a "pattern" to this type of three-point container so that the container itself appears luxurious.

As a method of adding a pattern to a container molded from a synthetic resin sheet as a material, it is conceivable to "print" the synthetic resin sheet, which is a material, but it is difficult to bring out luxury with this method. it is conceivable that. The reason is that simply printing on a container made of synthetic resin is too common, and the entire container remains nopperi, which makes it far from "luxury". Because there isn't.

Therefore, the present inventors have made various trial productions in order to form a pattern on a complicated surface where diffused reflection can be expected while effectively utilizing the "ground color" of the synthetic resin sheet constituting the "three-point container". went. What we have learned from these various prototypes is that when a pattern is formed from a complex surface, the pattern can be made luxurious by making the pattern complicated, but the pattern disappears during so-called "die-cutting". ..

One solution to this problem of the pattern disappearing during "die-cutting" can be found in Patent Document 4, for example. In the "thermoforming container having excellent negative pressure resistance and its manufacturing method" proposed in Patent Document 4, "a polyhedral wall having relatively few irregularities so that it can be easily die-cut from a molding mold" is used. The purpose of the present invention is to provide a plastic vacuum forming container and a method for manufacturing the same, which has a remarkable improvement in negative pressure resistance and can be stacked in a small volume during storage or transportation. ” As shown, "When manufacturing a cup-shaped thermoformed container made by hot-pressurizing or vacuum forming plastic, a circumferential polyhedron wall is formed on the body of the cup, and this polyhedron wall is formed with a constituent unit surface. It has a boundary ridge line where the unit surfaces are in contact with each other and a crossing portion where the boundary ridge lines intersect each other, and the boundary ridge line and the crossing portion are made to be convex to the outside of the container relative to the constituent unit planes. The surfaces should have a recessed portion between the crossing portions facing each other, the container axial arrangements adjacent to each other in the circumferential direction of the structural unit surface should have a phase difference, and each dimension of the structural unit surface should be tapered of the cup. It is within a certain range in relation to the angle and the thermoforming rate of the plastic. "

However, in the "container and its manufacturing method" of Patent Document 4, since the object is a "cup-shaped thermoformed container", the die-cutting direction must be the direction of the central axis of the container, and each pattern must be taken. (In FIG. 13, it is the structural unit surface 1) must be a “polyhedral wall with relatively few irregularities” as described in the above-mentioned target section. Not only that, considering the die-cutting direction, a so-called "undercut portion" is formed on each "constituent unit surface 1", and in particular, a mold for forming this "undercut portion". The "convex part" will crush a part of the pattern and pull it out. In other words, the folded pattern is crushed at the time of die cutting, and the pattern is not sharp. In that case, each pattern is a "polyhedral wall with relatively few irregularities" and is crushed at the time of die cutting, so that "luxury" cannot be produced.

Therefore, the present inventors can enjoy a somewhat luxurious meal by allowing a luxurious uneven pattern to exist on a part of the side wall of the "three-point container" formed of a synthetic resin sheet as a material. There are various ways to make a container that consumers can reasonably understand that tableware does not cost money and that they can enjoy eating out in a good atmosphere that "prepared meals" do not have. As a result of repeated studies, the present invention has been completed.

That is, an object of the present invention is a "three-point container" that can provide a synthetic resin sheet as a material at low cost, can have a gorgeous uneven pattern on a part of a side wall, and can be disposable. The purpose is to provide a packaging container equipped with a medium container that can be enjoyed as a luxurious meal to some extent in the store.

In order to solve the above problems, first, the means adopted by the invention according to claim 1 will be described with reference numerals used in the description of the best form described later.
"A packaging container 100 in which a pattern 40 is formed in a part recessed from the surface of at least the side surface 12 of the container body 10 having a flange portion 13 on the upper end edge of the side surface 12 rising from the bottom surface 11.
The flat surface portion of each single pattern 40A constituting the pattern 40 is continuous while having the same inclination, and is positioned stepwise from the flat surface portion closest to the bottom surface 11 upward. A packaging container 100 characterized in that it is gradually brought closer to the surface of the side surface 12. "
Is.

The packaging container 100 according to claim 1 is composed of at least a container body 10, but as shown in FIGS. 2, 3 and 5 (c), a pattern is formed on at least a side surface 12 of the container body 10. 40 is formed.

This pattern 40 may be formed on any one or two of the container body 10, the inner container 20, or the lid 30 of the packaging container 100 according to the embodiment described later, but is formed at all three points. However, in the embodiment described later, it is formed only on the container main body 10 from the viewpoint that it is the outermost one and is conspicuous. Further, in the embodiment, the pattern 40 is formed on the long side side surface 12 of the container body 10 as well, paying attention to the fact that the long side side surface 12 is eye-catching, but the forming position is limited. There is nothing. This means that the pattern 40 is formed on at least the side surface 12 of at least the container body 10 constituting the packaging container 100.

By the way, the pattern 40 formed on at least the side surface 12 of the container body 10 constituting the packaging container 100, and the pattern 40 is (c) in FIG. 5, (b) to (d) in FIG. As shown in the above, a large number of single patterns 40A having a flat surface portion are made continuous so that the inclinations of the flat surface portions are the same. As shown in FIGS. 9A to 9C, the pattern 40 may have various shapes, and each single pattern 40A constituting the pattern 40 has a flat surface portion. is required. In FIGS. 9A to 9C, each plane portion is a portion surrounded by a line in the bottom row.

Then, as shown in FIGS. 8 (b) to 8 (d), the plane portions of each single pattern 40A constituting the pattern 40 are continuous in a staircase pattern while having the same inclination. By making the extension slope line of each of these planes intersect the extension slope line of the side surface 12 on the upper side, the plane portion constituting each single pattern 40A becomes upward on the surface of the side surface 12. It gradually approaches. In other words, each flat surface portion is sequentially separated from the surface of the side surface 12 as it goes downward.

As described above, each flat surface portion is sequentially separated from the surface of the side surface 12 in a stepwise manner as it goes downward, and the flat surface portion closest to the bottom surface 11 is separated as much as possible from the surface of the side surface 12, and the bottom surface 11 Since the flat surface portion farthest from the surface is as close as possible to the surface of the side surface 12, it is not necessary to have a convex portion for forming an undercut in the mold for forming the flat surface portion. Further, since the direction of "die-cutting" the packaging container 100 is the direction toward the bottom surface 11 and there is no portion forming an undercut in the mold, the die-cutting can be performed without crushing each single pattern 40A. It is.

In other words, a "stepped" step portion may be formed on the molding die side for molding the container body 10 of the packaging container 100, and it is not necessary to form a "convex portion" or a "concave portion". Not only can the unevenness of the pattern 40 be represented three-dimensionally after die cutting, but also the die molding of the container body 10 can be performed at low cost.

As a result of the above, since the flat surface portion constituting each single pattern 40A is inclined at the same angle with respect to the light beam, the light reflection direction in each flat surface portion is the same, and the side surface 12 is formed. The pattern 40 shines brightly, and the luxury of the entire packaging container 100 is produced.

Therefore, the packaging container 100 according to claim 1 is a packaging container 100 that can be provided at a low cost by using a synthetic resin sheet as a material, can have a pattern 40 present on at least a part of a side surface 12, and can be disposable. Therefore, the pattern 40 after die cutting can be represented three-dimensionally, and the pattern 40 enables diffused reflection to produce luxury, so that a luxurious meal can be enjoyed in the store.

Further, in order to solve the above problem, the means adopted by the invention according to claim 2 is the packaging container 100 according to claim 1.
"Each single pattern 40A is composed of a slope portion 41 surrounded by an upper boundary line 41a and a lower boundary line 41b, and a flat surface portion 42 surrounded by a slope side boundary line 42a and a continuous boundary line 42b. ,
Each flat surface portion 42 is made to be continuous in a staircase pattern through each slope portion 41. "
Is.

In the packaging container 100 according to claim 2, each single pattern 40A is formed on a slope portion 41 surrounded by an upper boundary line 41a and a lower boundary line 41b, and on a slope side boundary line 42a and a continuous boundary line 42b. Each flat surface portion 42 is positioned in a stepped shape by supporting the flat surface portion 42 constituting each single pattern 40A by the slope portion 41 continuous with the flat surface portion 42 which is formed by the enclosed flat surface portion 42. It was made to do.

The first pattern unit 40a constituting the single pattern 40A assumes a case where it does not overlap with another first pattern unit 40a, as shown in FIG. 9B, for example. The pattern 40 is formed while the majority of the pattern units 40a do not overlap, in other words, the majority of the flat surface portions 42 do not overlap. However, since each flat surface portion 42 cannot be die-cut without crushing the pattern 40 unless it is positioned in a stepped shape, it is supported by a slope portion 41 continuous with the pattern 40.

The upper boundary line 41a and the lower boundary line 41b of the slope portion 41, the slope side boundary line 42a and the continuous boundary line 42b of the plane portion 42 are defined to conceptually distinguish each slope portion 41 and the plane portion 42. In the state where the single pattern 40A composed of the slope portion 41 and the flat surface portion 42 continuously forms the pattern 40, the upper boundary line 41a and the lower boundary line 41b of the slope portion 41 are formed. , The slope side boundary line 42a and the continuous boundary line 42b of the flat surface portion 42 indicate substantially the same position or portion.

As described above, each flat surface portion 42 of the single pattern 40A is sequentially separated from the surface of the side surface 12 in a stepwise manner as it goes downward, and the flat surface portion 42 closest to the bottom surface 11 is the side surface 12. Since the flat surface portion 42, which is the farthest from the surface and is the farthest from the bottom surface 11, is as close as possible to the surface of the side surface 12, the mold for forming the flat surface portion 42 has a convex portion for forming an undercut. There is no need. Further, since the direction of "die-cutting" the packaging container 100 is the direction toward the bottom surface 11 and there is no portion forming an undercut in the mold, the die-cutting can be performed without crushing each single pattern 40A. It is.

Therefore, the packaging container 100 according to claim 2 can exhibit the same function as that of claim 1, and the type of the first pattern unit 40a of the single pattern 40A constituting the pattern 40 is 1. The manufacturing cost of the packaging container 100, which can be classified and the pattern 40 allows the user to enjoy a luxurious meal, is reduced.

Further, in order to solve the above problem, the means adopted by the invention according to claim 3 is the packaging container 100 according to claim 1.
"Each single pattern 40A is composed of at least the first pattern unit 40a and the second pattern unit 40b that is continuous with the first pattern unit 40a.
The first pattern unit 40a is composed of a slope portion 41 surrounded by an upper boundary line 41a and a lower boundary line 41b, and a flat surface portion 42 surrounded by a slope side boundary line 42a and a continuous boundary line 42b.
The second pattern unit 40b is composed of a slope portion 43 surrounded by the upper boundary line 43a and the lower boundary line 43b, and a flat surface portion 44 surrounded by the slope side boundary line 44a and the continuous boundary line 44b. ,
The flat surfaces 42 and 44 are made to be continuous in a stepped manner via the slopes 41 and 43. "
Is.

In the packaging container 100 according to claim 1, as shown in FIG. 5 (c), a pattern 40 is formed at least on the side surface 12 of the container body 10, and the pattern 40 is shown in FIG. As described above, a large number of single patterns 40A were continuously formed. Then, in the packaging container 100 according to claim 3, one single pattern 40A constituting the pattern 40 is represented by the first pattern unit 40a as shown in FIGS. 6A and 6B. And the second pattern unit 40b that is continuous with the first pattern unit 40a.

The packaging container 100 according to claim 3 assumes the case of (a) or (c) of FIG. 9, and as shown in the lower portion of FIG. 6 (a), first, first The first pattern unit 40a is composed of a slope portion 41 surrounded by an upper boundary line 41a and a lower boundary line 41b, and a flat surface portion 42 surrounded by a slope side boundary line 42a and a continuous boundary line 42b. Is. Up to this point, the same applies to the case of claim 2.

Assuming that the first pattern unit 40a forming a part of the single pattern 40A may overlap with another single pattern 40A, for example, as shown in (a) or (c) of FIG. The pattern 40 is formed by overlapping a large number of the single patterns 40A. However, since each flat surface portion 42 cannot be die-cut without crushing the pattern 40 unless it is positioned in a stepped shape, it is supported by a slope portion 41 continuous with the pattern 40.

The upper boundary line 41a and the lower boundary line 41b of the slope portion 41, the slope side boundary line 42a and the continuous boundary line 42b of the plane portion 42 are defined to conceptually distinguish each slope portion 41 and the plane portion 42. In the state where the first pattern unit 40a composed of the slope portion 41 and the plane portion 42 and the second pattern unit 40b described later form the pattern 40 continuously, the upper boundary of the slope portion 41 is formed. The line 41a and the lower boundary line 41b and the slope side boundary line 42a and the continuous boundary line 42b of the flat surface portion 42 indicate substantially the same position or portion.

On the other hand, each single pattern 40A has a second pattern unit 40b continuous with the first pattern unit 40a as shown in the upper portion of FIG. 6A. The second pattern unit 40b Is composed of a slope portion 43 surrounded by the upper boundary line 43a and the lower boundary line 43b, and a flat surface portion 44 surrounded by the slope side boundary line 44a and the continuous boundary line 44b.

The upper boundary line 43a and the lower boundary line 43b of the slope portion 43, the slope side boundary line 44a and the continuous boundary line 44b of the plane portion 44 are defined to conceptually distinguish each slope portion 43 and the plane portion 44. In the state where the second pattern unit 40b composed of the slope portion 43 and the plane portion 44 continuously forms the pattern 40, the upper boundary line 43a and the lower boundary line 43b of the slope portion 43 are formed. , The slope side boundary line 44a and the continuous boundary line 44b of the flat surface portion 44 indicate substantially the same position or portion.

If the first pattern unit 40a and the second pattern unit 40b are made continuous, a single pattern 40A as shown in FIG. 6B is formed, but such a single pattern 40A is continuously made in order. Then, for example, as shown in FIG. 3 and FIG. 7 (b), the same single pattern 40A is formed as a continuous pattern 40. Note that FIG. 7A shows a case where the first pattern unit 40a and the second pattern unit 40b are continuous in the horizontal direction, respectively. It shows that a part of the pattern 40 can be completed as shown in b).

As described above, when a large number of single patterns 40A are continuously connected, in the packaging container 100 of claim 3, as shown in FIG. 6C, each first pattern unit 40a when viewed in cross section Since the flat surface portion 42 and the flat surface portion 44 of the second pattern unit 40b are continuous in a stepped manner via the slope portion 41 on the first pattern unit 40a side and the slope portion 43 on the second pattern unit 40b side. is there.

As a result of the flat surface portion 42 of the first pattern unit 40a and the flat surface portion 44 of the second pattern unit 40b forming the single pattern 40A continuing in a stepped manner, the pattern 40 shown in FIG. As shown in FIGS. 8B to 8D, the flat surface portion 42 of the first pattern unit 40a and the flat surface portion 44 of the second pattern unit 40b are located in a stepped manner. As the flat surfaces 42 and 44 are located upward, they gradually approach the upper side of the outer surface formed by the side surface 12 of the container body 10.

As a result of the flat surface portion 42 of the first pattern unit 40a and the flat surface portion 44 of the second pattern unit 40b being positioned in a stepped manner, the flat surface portion 42 constituting each single pattern 40A also constitutes the second pattern unit 40b. Since the flat surface portion 44 is also inclined at a constant angle with respect to the light beam, the light reflection direction in each of the flat surface portions 42 and 44 is constant, and the side surface 12 is shined by the pattern 40. Therefore, the luxury of the entire packaging container 100 is produced.

Further, when the container body 10 is die-cut, it is pulled out from the positions shown in FIGS. 8 (b) to (d) to the lower side in the drawing, as shown in FIGS. 8 (b) to (d). In addition, since it is not necessary for the mold to have unevenness that is an obstacle when the container body 10 is pulled out to the lower side in the drawing, the mold can be cut out without any trouble.

Therefore, the container body 10 according to claim 3 has the same function as that of claim 1, and is composed of a first pattern unit 40a and a second pattern unit 40b as a single pattern 40A. Complex diffused reflection can be caused by the flat surface portion 42 of the first pattern unit 40a and the flat surface portion 44 of the second pattern unit 40b, and the container body 10 (packaging container 100) at the time of use imparts further luxury. It has become possible.

As described above, the present invention
"A packaging container 100 in which a pattern 40 is formed in a part recessed from the surface of at least the side surface 12 of the container body 10 having a flange portion 13 on the upper end edge of the side surface 12 rising from the bottom surface 11.
The flat surface portion of each single pattern 40A constituting the pattern 40 is continuous while having the same inclination, and is positioned stepwise from the flat surface portion closest to the bottom surface 11 upward. Sequentially approaching the surface of the side surface 12 "
Has its main structural features, which
For packaging, which can provide a synthetic resin sheet as a material at low cost, can represent the pattern 40 after die cutting in three dimensions, can have a luxurious uneven pattern 40 on a part of the side surface 12, and can be disposable. It is possible to provide a packaging container 100 which is a container 100 and can be enjoyed as a luxurious meal to some extent in the store.

It is a perspective view of the state in which the inner container 20 of the packaging container 100 according to the present invention is filled with rice and the lid 30 is removed. The packaging container 100 is shown, and is a plan view of a state in which a solid line container body 10, a dotted line middle container 20, and a two-dot chain line lid 30 are combined. FIG. 5 is an enlarged side view of the container body 10 according to the present invention, in which the pattern 40 attached to the side surface 12 is clearly drawn. The packaging container 100 is a combination of a solid line container body 10, a dotted line middle container 20, and a two-dot chain line lid 30, where (a) is a side view on the long side, and (b) is a side view on the long side. It is a side view of a short side. Each member constituting the packaging container 100 is shown, (a) is a plan view of the lid 30, (b) is a plan view of the middle container 20, and (c) is a plan view of the container body 10. The pattern 40 adopted in the present invention is described, and (a) explains that one single pattern 40A constituting the pattern 40 is a combination of the first pattern unit 40a and the second pattern unit 40b. The exploded view (b) is an integrated view explaining that one single pattern 40A is completed by combining the first pattern unit 40a and the second pattern unit 40b, and (c) is 4 in (b). It is a cross-sectional view seen along line -4. The same pattern 40 is described. In (a), one single pattern 40A constituting the pattern 40 is a continuous first pattern unit 40a in the horizontal direction, and a second pattern unit 40b is continuous in the horizontal direction. An exploded view for explaining that the pattern 40 is also a combination with the one shown in (a) is an enlarged view showing a state in which the pattern 40 is formed by combining the ones shown in (a). It is shown that the flat surfaces 42 and 44 of the pattern 40 are stepped with respect to the side surface 12 of the container body 10, and (a) is a side view showing a part of the pattern 40 appearing on the side surface side. (B) is a cross-sectional view taken along line 1-1 in (a), (c) is a cross-sectional view taken along line 2-2 in (a), and (d) is in (a). It is sectional drawing seen along the 3-3 line of. Another example of the single pattern 40A constituting the pattern 40 is shown. (A) is an enlarged view of a single pattern in which the pattern 40 is a circle, and (b) is an enlarged view in which the pattern 40 is a square. An enlarged view when the pattern 40 is composed of a single pattern, and (c) is an enlarged view when the pattern 40 is composed of a single hexagonal pattern. It is a side view which shows the container proposed in Patent Document 1. FIG. It is a vertical cross-sectional view which shows the container proposed in Patent Document 2. It is a partial vertical cross-sectional view which shows the container proposed in Patent Document 3.

Next, the invention according to each claim configured as described above will be described with respect to the packaging container 100 which is the embodiment shown in the drawings. FIG. The state when it is stored in 10 and the lid 30 is removed is shown. That is, the packaging container 100 according to the present invention includes the container body 10, the inner container 20 housed in the container body 10, and the lid 30 engaged with the outer end 13a of the flange portion 13 of the container body 10. It is a "three-point container" consisting of.

The container body 10, the inner container 20, and the lid 30 of the packaging container 100 are inexpensive ones that are sheet-molded using "pressure air" or "vacuum" with respect to the synthetic resin sheet, and are packaging containers. The 100 is disposable. Although the thickness of the synthetic resin sheet is appropriate, it is approximately 1 mm or less. In the packaging container 100, a large number of each of the container body 10, the inner container 20, and the lid 30 are individually and stacked, and the inner container 20 is manually filled with rice in the backyard of the store. Is stored in the container body 10, and then the lid 30 is fitted.

As shown in FIG. 5C, the container body 10 includes a bottom surface 11, a side surface 12 rising from the periphery of the bottom surface 11, and a flange portion 13 formed on the outer peripheral edge of the side surface 12. On the upper part of the side surface 12, a step portion 14 to which the engaging piece 23a on the inner container 20 side, which will be described later, is engaged is formed.

Further, as shown in FIGS. 2 and 5 (c), a plurality of divided raised bottom portions 15 that are independently raised from each other are formed on the bottom surface 11 of the container body 10. As shown in FIG. 2, each of these raised bottom portions 15 is formed at a position line-symmetrical with respect to the center line of the container main body 10 or the middle container 20 to be housed therein, and is formed in a line symmetrical position. When the 20 is stored in the container body 10, most of the bottom surface 21 of the middle container 20 can always come into contact with the upper surface of each raised bottom portion 15 even if the left and right sides are changed.

Then, in the packaging container 100 according to the present embodiment, as shown in FIGS. 1, 3, and 6 (c), a part of the flange portion 13 of the container body 10 is curved downward to face the window. 16 is formed. The facing window 16 allows a part of the middle container 20 to face outward when the middle container 20 is housed in the container main body 10, as shown in FIGS. 1 and 3.

The facing window 16 makes a part of the inner container 20 molded in a different color from the container body 10 visible from the outside of the packaging container 100. For example, the facing window 16 of the black container body 10 Therefore, by facing a part of the red inner container 20, the packaging container 100 as a whole gives a luxurious impression. Of course, even if a part of the inner container 20 facing from the facing window 16 is patterned, it is possible to produce luxury.

Then, as shown in FIGS. 1, 3, 4, and 6 (c), the bottom surface 11 of the container body 10 is formed by further bulging a part of the bottom surface 11 downward. A bulging leg portion 17 projecting downward from the bottom surface 11 is formed. The bulging leg 17 ensures the horizontal state of the packaging container 100 placed on the table, and of course, the bottom surface 11 of the portion other than the bulging leg 17 does not come into direct contact with the table. To do. As a result, an air layer is formed between the table surface and the lower surface of the bottom surface 11, and the heat insulating effect of this air layer is enhanced.

In the packaging container 100 of this embodiment, for example, as shown in FIG. 6C, a pattern 40 is formed on a part of the side surface 12 of the container body 10, and the packaging container is formed by this pattern 40. I try to produce 100 luxury.

The inner container 20 has a general shape similar to that of the container main body 10 in that the bottom surface 21, the side wall 22 rising from the side wall 22, and the flange portion 23 formed on the peripheral edge of the side wall 22 are provided. The engaging piece 23a at the outer end of the flange portion 23 is engaged on the step portion 14 of the container body 10, and the whole is housed in the container body 10. The reason why the entire inner container 20 is stored in the container main body 10 is to make the inner container 20 a substantial "donburi" or "heavy" container, and the container main body. The 10 itself is used to make the contents of the inner container 20 look luxurious and to keep the contents warm. This heat retention is performed by an air layer formed between the inner container 20 and the container body 10.

In other words, the inner container 20 is not used for partitioning the contents, and also has a small room for storing the "pickles", "tsumas", or "seasonings" that are in the contents. Even so, most of them can store a lot of "rice". By doing so, as shown in Table 1 above, it is intended to respond to the increasing demand for eating out "rice" in recent years.

In the inner container 20, as shown in FIGS. 2, 4, 5 (b), and 7, a bulging leg portion 21a is formed on the periphery of the bottom surface 21 thereof, and the bulging leg portion 21a is formed. As shown in FIG. 8, the 21a abuts on the inner surface of the bottom surface 11 of the container body 10 located outside each raised bottom portion 15. At this time, as shown in FIG. 2, each raised bottom portion 15 on the container body 10 side is formed at a position line-symmetrical with respect to the center line of the container body 10 or the middle container 20 to be housed therein. Therefore, when the inner container 20 is stored in the container main body 10, most of the bottom surface 21 of the inner container 20 is always in contact with the upper surface of each raised bottom portion 15 even if the left and right sides are changed. ..

As a result of the above, in the inner container 20 housed in the container main body 10, most of the bottom surface 21 of the inner container 20 is always in contact with the upper surface of each raised bottom portion 15 even if the left and right sides are reversed. Then, the bulging leg portion 21a on the inner container 20 side abuts on the inner surface of the bottom surface 11 of the container body 10 located outside each raised bottom portion 15, and the engaging piece formed on the flange portion 23 of the inner container 20. Since 23a engages with the step portion 14 on the container body 10 side, the middle container 20 is housed in a stable state with respect to the container body 10. Of course, as shown in FIG. 8, a certain amount of gap is formed between the bottom surface 11 of the container body 10 and the bottom surface 21 of the inner container 20, so that the air in the gap forms the gap of the packaging container 100. It will keep warm.

Then, in this packaging container 100, rice and heavy objects, which have become popular in recent years, can be packed in a medium container 20 having substantially the same volume as the container body 10 as shown in FIG. The volume feeling can be expressed by the container body 10, the container body 10 and the inner container 20 are different in color, and the pattern 40 is formed on the side surface 12 of the container body 10 as shown in FIGS. 2 and 3. Then, you can enjoy a luxurious meal in the store.

Further, in the packaging container 100 of the present embodiment, a bulging protrusion 21b that can come into contact with any outer surface of the raised bottom portion 15 on the container body 10 side is formed on the bottom surface 21 of the inner container 20. The bulging protrusion 21b can come into contact with any outer surface of the raised bottom portion 15 on the container body 10 side.

As shown in FIG. 5B, the bulging protrusion 21b may be formed in the vicinity (inscribed position) of the bulging leg portion 21a. This is because the bulging leg portion 21a formed on the periphery of the bottom surface 21 of the inner container 20 can come into contact with the inner surface of the bottom surface 11 located outside each raised bottom portion 15 of the container body 10. This is because if the protrusion 21b is formed in the vicinity of the bulging leg portion 21a, it can be easily brought into contact with any outer surface of the raised bottom portion 15 on the container body 10 side, and the bulging protrusion 21b itself can be easily molded. Because it becomes.

Further, as shown in FIG. 7, each of these bulging protrusions 21b not only fulfills the positioning of the inner container 20 with respect to the container body 10 when the inner container 20 is stored in the container body 10, but also positions the inner container 20. As a result, since a space is formed between the side surface of each raised bottom portion 15 on the container body 10 side and the bulging leg portion 21a on the inner container 20 side, the space formation for ensuring the heat insulating property is positively performed.

The lid 30 according to the present embodiment is a sheet molded from a transparent synthetic resin sheet, and on the outer periphery thereof, an engaging portion that engages with the outer end 13a of the flange portion 13 on the container body 10 side. 31 is formed, and if this engaging portion 31 is engaged with the outer end 13a of the container body 10 containing the inner container 20, for example, as shown in FIG. 1 for reference, the rice in the inner container 20 Objects can be easily visually recognized from the outside. Of course, it goes without saying that the lid 30 protects the contents.

In the present embodiment, as shown in FIGS. 2, 3, 5 (c), and 8 (a), the packaging container 100 including the container body 10, the inner container 20, and the lid 30 is provided. A pattern 40 is attached to the (long) side surface 12 of the constituent container body 10. In this pattern 40, a plurality of single patterns 40A as shown in FIG. 6B are continuous so as to occupy a predetermined portion of the side surface 12, for example, as shown in FIG. 5C. Is.

In the present embodiment, the pattern 40 is formed on the side surface 12 on the long side of the container body 10, but it is formed on the flange portion 13 of the container body 10 or is a medium container that can be seen from the facing window 16 of the container body 10. It may be formed in 20 and implemented, which means that it is formed in at least the container body 10.

By the way, although it is a single pattern 40A constituting the pattern 40, in the present embodiment, as shown in FIG. 6, there are two types of the single pattern 40A, the first pattern unit 40a and the second pattern unit 40b. It consists of. However, as long as there is no portion where the first pattern unit 40a and the second pattern unit 40b have the same shape and overlap each other, it is sufficiently possible to use only one type as in claim 2. It goes without saying that whether each single pattern 40A may be a single pattern unit or a combination of a plurality of pattern units depends on the aspect of the pattern 40. However, in order for each single pattern 40A to be stepped, it is necessary to have at least a flat portion.

As shown in FIGS. 6A and 6B, the first pattern unit 40a in the present embodiment constituting each single pattern 40A has a slope portion 41 and a flat surface portion 42. The slope portion 41 is surrounded by an upper boundary line 41a and a lower boundary line 41b around the slope portion 41. Similarly, the flat surface portion 42 is surrounded by a slope-side boundary line 42a and a continuous boundary line 42b around the flat surface portion 42. The upper boundary line 41a, the lower boundary line 41b, the slope side boundary line 42a, and the continuous boundary line 42b are concepts adopted to explain the shape of the single pattern 40A, and these single patterns are used. When 40A is molded from the synthetic resin sheet, the continuous boundary line 42b of the flat surface portion 42 of the first pattern unit 40a is substantially the same as the lower boundary line 43b of the slope portion 43 of the second pattern unit 40b. .. Similarly, the lower boundary line 41b of the slope portion 41 of the first pattern unit 40a is substantially the same as the continuous boundary line 44b of the flat surface portion 44 of the second pattern unit 40b.

In short, in the pattern 40 of the present embodiment, each single pattern 40A constituting the pattern 40 is composed of a combination of the first pattern unit 40a and the second pattern unit 40b, and the first pattern unit 40a is the slope portion 41. A flat surface portion 42 is provided, and similarly, the second pattern unit 40b includes a slope portion 43 and a flat surface portion 44. Therefore, when the first pattern unit 40a and the second pattern unit 40b are made continuous, the flat portion 42 of the first pattern unit 40a and the flat portion 44 of the second pattern unit 40b each reflect the glitter of the pattern 40. It becomes.

The slope portion 41 of the first pattern unit 40a and the slope portion 43 of the second pattern unit 40b are for forming a stepped portion in the pattern 40, so to speak, for forming a stepped portion, and is for forming a stepped portion in FIG. As shown in (c), each serves as a portion that supports the end portions of the flat surface portion 42 and the flat surface portion 44. Here, when the slope portion 41 of the first pattern unit 40a and the slope portion 43 of the second pattern unit 40b are viewed in a plane, for example, as shown in FIG. 7A, the lower side of the drawing is wide and upward. It becomes thinner as it grows. The reason for doing so is that, as shown in FIG. 6C, the inclination angle formed by the flat surfaces 42 and 44 of each single pattern 40A and the inclination angle formed by the side surface 12 are different. ..

The angle θ between the extension surface and the side surface 12 of the flat surface portions 42 and 44 of each single pattern 40A is defined so that both sides intersect at the upper side of the drawing, and the flat surface portion 42 of each single pattern 40A. And 44 are asymptotic to the side surface 12 as it goes above the side surface 12. On the other hand, the flat surfaces 42 and 44 of each single pattern 40A are separated from the side surface 12 as they go downward from the side surface 12.

As described above, each flat surface portion 42 or 44 is sequentially separated from the surface of the side surface 12 in a stepwise manner as it goes downward, and the flat surface portion 42 or 44 closest to the bottom surface 11 is maximized from the surface of the side surface 12. Since the flat surface portion 42 or 44, which is separated and farthest from the bottom surface 11, is as close as possible to the surface of the side surface 12, it is necessary to have a convex portion for forming an undercut in the mold for forming the flat surface portion 42 or 44. It's gone. Further, since the direction in which the packaging container 100 is "die-cut" is toward the bottom surface 11 and there is no portion forming an undercut in the mold, the container body 10 can be used without crushing each single pattern 40A. It can be die-cut.

In other words, a "stepped" step portion may be formed on the molding die side for molding the container body 10 of the packaging container 100, and it is not necessary to form a "convex portion" or a "concave portion". Not only can the unevenness of the pattern 40 be expressed three-dimensionally after die cutting, but also the die molding of the container body 10 can be performed at low cost.

As a result of the above, since the flat surface portion 42 or 44 constituting each single pattern 40A is inclined at the same angle with respect to the light beam, the light reflection direction in each flat surface portion 42 or 44 is the same. Therefore, the side surface 12 is shined by the pattern 40, and the luxury of the container body 10 or the packaging container 100 using the same is produced.

100 Packaging container 10 Container body 11 Bottom surface 12 Side surface 13 Flanged part 13a Outer end 14 Step part 15 Raised bottom part 16 Facing window 17 Swelling leg part 20 Medium container 21 Bottom surface 21a Swelling leg part 21b Swelling protrusion 22 Side wall 23 23a Engagement piece 30 Lid 31 Engagement part 40 Pattern 40A Single pattern 40a First pattern unit 40b Second pattern unit 41 Slope 41a Upper boundary 41b Lower boundary 42 Flat surface 42a Slope side boundary 42b Continuous Boundary 43 Slope 43a Upper boundary 43b Lower boundary 44 Flat surface 44a Slope side boundary 44b Continuous boundary

Claims (3)

A packaging container having a flange on the upper end edge of a side surface rising from the bottom surface and having a pattern formed on at least a part of the container body recessed from the surface of the side surface.
The flat surface portion of each single pattern constituting the pattern is continuous while having the same inclination, and the side surface portion is positioned stepwise from the flat surface portion closest to the bottom surface upward. A packaging container characterized in that it is gradually brought closer to the surface of the surface. Each single pattern is composed of a slope portion surrounded by an upper boundary line and a lower boundary line, and a flat surface portion surrounded by a slope side boundary line and a continuous boundary line.
The packaging container according to claim 1, wherein the flat surface portions are continuous in a stepped manner via the slope portions thereof. Each single pattern is composed of at least a first pattern unit and a second pattern unit that is continuous with the first pattern unit.
The first pattern unit is composed of a slope portion surrounded by an upper boundary line and a lower boundary line, and a flat surface portion surrounded by a slope side boundary line and a continuous boundary line.
The second pattern unit is composed of a slope portion surrounded by an upper boundary line and a lower boundary line, and a flat surface portion surrounded by a slope side boundary line and a continuous boundary line.
The packaging container according to claim 1, wherein the flat surface portions are continuous in a stepped manner via the slope portions thereof.

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