JP6912945B2 - Middle plate and packaging container for packaging container - Google Patents

Description

The present invention relates to a one-stage packaging container inner plate that can be stored in the container body and can be closed with a lid, and a packaging container that stores the inner plate.

Conventionally, for example, packaging containers using medium plates have been widely used for packaging foods sold at retail stores such as supermarkets and convenience stores. In general, the inner plate was used to separate and package foods (liquid foods, foods in which juice and oil easily flow out, etc.) different from the foods in the container body. In such a packaging container, a form in which the inner plate is suspended from the container body or the lid has been adopted. For example, it is a two-stage packaging container in which the flange portion of the inner plate is caught by the flange portion of the container body and the food storage portion of the inner plate is arranged directly above the food storage portion of the container body.

In the above-mentioned two-stage packaging container, since the inner plate overlaps the upper layer of the container body, the total area of the packaging container can be reduced, so that the effect of saving the display space at the time of over-the-counter sales is expected. However, for example, food liquid leakage (juice leakage) due to surface tension from the contact portion (flange portion, etc.) between the inner plate and the container body and the lid, the middle plate falling due to overweight of the food, and the inner plate with respect to the container body. Overfitting (a state in which the inner plate is difficult to remove from the container body) has been regarded as a problem.

Therefore, the flange portion of the inner plate is placed on the flat surface of the step portion provided in the container body, and the pressing portion corresponding to the lowermost end of the flange portion of the lid body is the flange of the inner plate when the lid is closed. An idea of pressing from the top of the part (see, for example, Patent Document 1) has been proposed. Based on this idea, the flange of the lid is internally fitted inside the container body via the inner plate, which prevents food leakage and the inner plate from falling, and makes it easier to attach and detach the inner plate from the container body. The effect of improvement is claimed.

In addition, the problem of food leakage has been regarded as a problem not only in the two-stage type but also in the one-stage type packaging container. That is, by forming a recessed portion in the flange portion of the outer fitting type lid with respect to the container body, a space is created between the flange portion of the container body in surface contact, so that surface tension does not act on the moisture. , The idea that the capillary phenomenon can be blocked (see, for example, Patent Document 2) has been proposed.

Japanese Unexamined Patent Publication No. 2014-213921 Japanese Unexamined Patent Publication No. 2002-362643

Conventional two-stage packaging containers are suitable for commercial distribution (for example, distribution by a central kitchen) in which the place where food is manufactured and packaged and the place where food is sold are different. In other words, not only is the workability of packaging good because the inner plate can be easily attached to the container body, but also the inner plate is less likely to shift or fall inside the container body, so it is highly safe during distribution, and the product Quality maintenance was expected.

On the other hand, in recent retail stores, taking advantage of improvements in food freezing technology and heating technology, frozen foods are cooked in the backyard of the store with a heating device, and the products are provided to consumers in a warm state or displayed in stores. Tend to do. In such a sales format, it is possible to appropriately determine whether to increase or decrease the production of products according to the sales and the status of orders from consumers, so that retailers can not only reduce the burden of purchasing and inventory management from the central kitchen, but also. It has the advantage of being able to provide consumers with accurate services in response to their demands.

The above-mentioned changes in the sales format of retail stores are due to changes in consumers who purchase lunch boxes and delicatessen items. In detail, while the tendency of home-cooked meals (meals by purchasing ready-made products), which started with the desire to save money on eating out, continued, the burden and resistance to freshly prepared foods and self-cooking increased. Along with the quality of eating out, there is a growing demand for home-cooked meals from inorganic, bland meals to organic, warm meals.

The inventors think that food packaging should follow the changes in the commercial distribution at retail stores against the background of such changes in consumer demand, and as a method of packaging the middle plate, two-stage packaging From the perspective that it is not necessary to limit it to containers for use. In other words, unlike the commercial distribution from central kitchens, the risk of the middle plate falling is low, and it is not necessary to secure sufficient display space at the store due to inventory control, so the idea of adopting a one-stage packaging container It came to.

The one-stage packaging container has an advantage different from the two-stage packaging container. For example, it is easy to improve purchasing motivation because all the foods arranged in the container body can be shown to consumers. In addition, since the inner plate can be placed on the container body and easily attached and detached, it is possible to increase the types and combinations of foods, not limited to bowls. Such an advantage is suitable for cooking in the backyard in the store and order sales in the store.

However, the inner plate stored in the conventional one-stage packaging container is fixed by a partition provided in the container body to prevent misalignment, so that an extra space may be created in the container body or the inside may be inside. In order to prevent the contents from leaking by attaching the lid to the dish, the cost for extra materials was incurred. Further, since the load applied to the container body and the lid, which are applied to the one-stage packaging container, is partially different depending on the type of the contents, damage / deformation and misalignment of the contents occur.

In order to solve the problem of such a one-stage packaging container, the inventors have made the best use of the shape of the container body and the lid without using a partition or a lid dedicated to the inner plate after ingenuity. Structure to prevent misalignment of dishes, shape of container body and lid to prevent damage / deformation and misalignment of contents when serving foods with different weights, willingness to purchase while responding to consumer demand It was found in the shape of the container body and the lid that stir up.

In particular, considering the structure for preventing the misalignment of the inner plate, a new problem arises in the leakage of food juice caused by the arrangement relationship between the lid and the inner plate. That is, if not only the container body but also the inner plate partially contacts the lid, there is a risk that juice may leak from that portion. In other words, if there is a part that comes into surface contact, surface tension is likely to act on moisture other than the flange part, so the inventors have stated that measures against juice leakage from that part are also indispensable for a one-stage packaging container. I arrived.

Therefore, an object of the present invention is to provide an inner plate of a packaging container that prevents misalignment with respect to the container body and leakage of juice from a portion in contact with the lid that closes the container body.

That is, the inner plate of the packaging container according to the present invention is a middle plate taller than the container body closed by the lid, and includes at least an upper end portion that comes into contact with the top surface of the lid when the lid is closed. The upper end portion includes an inner end edge forming an opening to be sealed by the top surface portion, an outer end edge outside the inner end edge, and a concave portion having the inner end edge and the outer end edge as both ends. It is characterized by having.

Further, it is desirable that the inner edge and the outer edge come into contact with the top surface of the lid at the same height.

Further, the packaging container according to the present invention may be characterized by including the above-mentioned inner plate, container body, and lid.

The definitions, meanings, or specific examples of the requirements constituting the present invention are shown below.

"Middle plate taller than the container body" means that the height from the lower end in contact with the ground to the highest upper end is the height of the container body and the middle plate placed on the same horizontal ground. A medium plate higher than the container body may be applicable.

The "concave portion" is a flat surface that causes a phenomenon (capillary phenomenon) in which a predetermined amount of water passes from the inner edge to the outer edge of the upper end of the inner plate that is in contact with the top surface of the lid. It may mean a curved groove provided so as not to intervene. The depth of the "concave portion" may be less than half the distance from the inner edge to the outer edge (ie, the width of the "concave"). This is because if it is more than half, there is a risk that a predetermined amount of water will stay and the airtightness may be deteriorated.

The "same height" at which the inner edge and the outer edge abut against the top surface of the lid also means the height at which the inner edge and the outer edge are located on the same horizontal plane. good.

Foods such as lunch boxes and prepared foods sold in supermarkets and convenience stores may be stored in the "container body" and "middle plate". Noodles such as udon, ramen, chilled Chinese noodles, and pasta, and side dishes such as steak, hamburger, beef stew, tempura, and salad may be used. Omuraisu sauce, etc.) may be stored.

The inner plate of the packaging container according to the present invention has a concave portion whose upper end portion that comes into contact with the top surface portion of the lid when the lid is closed has an inner end edge and an outer end edge that form an opening. Since the inner edge and the outer edge are in line contact with the face portion (the upper end portion does not come into surface contact), misalignment with respect to the container body and the lid is prevented, and moisture from the inside (for example, food juice, oil) is prevented. It is possible to avoid the capillary phenomenon in which water droplets obtained by cooling steam due to heating) move beyond the inner edge to the outer edge side. That is, since the concave portion avoids the generation of surface tension with respect to the moisture near the inner edge and most of the moisture can be retained along the inner edge, the moisture can stay at least beyond the outer edge in the closed state. It can be expected to have the effect of preventing the outflow to.

Further, the inner edge and the outer edge come into contact with the top surface of the lid at the same height, so that the sealing effect of the inner plate is improved. That is, since pressure is applied substantially evenly from the top surface of the closed lid that is fitted to the container body to the inner and outer edges, it is possible to prevent foreign matter from entering the inner plate and prevent foreign matter from entering the inner plate. The effect of maintaining the quality of the contents can be expected.

Further, the packaging container according to the present invention is provided with the above-mentioned inner plate, container body, and lid to prevent, for example, food juice leakage that flows out beyond the upper end of the inner plate, and to prevent the inner plate from leaking. It is possible to maintain the sealed state of the food and contribute to the quality assurance of food.

It is a perspective view which shows an example of a packaging container. It is another perspective view which shows an example of a packaging container. It is a front view which shows an example of the container main body of a packaging container. It is a top view which shows an example of the container main body of a packaging container. It is a bottom view which shows an example of the container main body of a packaging container. It is a right side view which shows an example of the container main body of a packaging container. It is an end view which shows an example of the container main body of a packaging container. It is another end view which shows an example of the container body of a packaging container. It is a front view which shows an example of the lid body of a packaging container. It is a top view which shows an example of the lid body of a packaging container. It is a bottom view which shows an example of the lid body of a packaging container. It is a right side view which shows an example of the lid body of a packaging container. It is a front view which shows an example of the inner plate of a packaging container. It is a rear view which shows an example of the inner plate of a packaging container. It is a top view which shows an example of the inner plate of a packaging container. It is a right side view which shows an example of the inner plate of a packaging container. It is a left side view which shows an example of the inner plate of a packaging container. It is an end view which shows an example of the inner plate of a packaging container.

Hereinafter, with reference to FIGS. 1 to 18, the outline of the packaging container according to the embodiment of the present invention, the container body, the lid, and the inner plate constituting the packaging container will be described.
In these figures, some of the same parts having a plurality of parts are numbered only in one part. For parts that cannot be confirmed and cannot be seen on the drawing, some parts and leader lines are indicated by broken lines. For the parts that are virtually depicted on the drawing, some parts and leader lines are indicated by alternate long and short dash lines. Some parts are depicted transparently on the drawing.
The orientation of the main packaging container may be based on the normal orientation in which the consumer faces the main packaging container, and this normal orientation may be the front of the main packaging container, and the consumer located in front of the main packaging container. The closer side may be expressed as the front side, the far side as the back side, the left hand direction as the left side, the right hand direction as the right side, the upper direction as the upper side, and the lower direction as the lower side.

As shown in FIG. 1, the inner plate of the packaging container according to the present embodiment is an inner plate 3 taller than the container body 1 closed by the lid 2, and the top surface of the lid is closed when the lid is closed. At least an upper end portion 32a (corresponding to the "middle plate side wall upper end portion 32a") abutting the 21 (corresponding to the "cover body top surface portion 21") is provided, and the upper end portion forms an opening to be sealed by the top surface portion. The edge 32ax (corresponding to "the inner edge 32ax of the upper end of the inner plate side wall"), the outer edge 32ay outside the inner edge (corresponding to the "outer edge 32ay of the upper end of the middle plate side wall"), and the inner edge It may have a concave portion 32az (corresponding to "the concave portion 32az at the upper end of the side wall of the middle plate") having the outer edge of the plate as both ends.

Further, the inner edge 32ax and the outer edge 32ay may be in contact with the top surface portion 21 of the lid 2 at the same height.

Further, the packaging container according to the present embodiment may include a middle plate 3, a container body 1, and a lid 2.

From here, with reference to FIGS. 1 to 18, the structure of the packaging container in the present embodiment, the container body, the lid, and the inner plate constituting the packaging container will be described in detail. FIG. 7 is an enlarged end view of the BB portion in the AA ′ portion of FIG. FIG. 8 is an enlarged end view of the DD portion in the CC portion of FIG. FIG. 18 is an enlarged end view of the FF portion in the EE portion of FIG.

As shown in FIG. 2, the packaging container in the present embodiment includes a container body 1 in which food and an inner plate are stored, a lid 2 that closes an opening portion of the container body by internal fitting, the container body, and the container body. An inner plate 3 whose mounting position is fixed by the lid may be provided. Assuming that the normal state in which the food consumer faces the main packaging container is a plan view, the shape of the main packaging container is a substantially rectangular shape that gently bulges outward in a plan view, and the ratio of the long side to the short side. May be a silver-white ratio (1: √2).

Next, the container body 1 in this embodiment will be described.

As shown in FIGS. 3 to 8, the container main body 1 expands upward via a main body bottom portion 11 on which food and an inner plate are placed and a main body boundary portion 12 gently curved from the peripheral edge of the main body bottom portion. The main body side wall portion 13 provided may be provided, and the main body flange portion 14 extending outward from the upper end of the main body side wall portion may be provided. The shape of the container body 1 may be substantially rectangular in a plan view, and the ratio of the long side to the short side may be the silver ratio (1: √2).

The main body bottom portion 11 may have a main body bottom first convex portion 11a and a main body bottom second convex portion 11b protruding upward (inward direction of the container main body 1) from the flat portion. The shape of the bottom portion 11 of the main body may be a substantially rectangular shape in which the peripheral edge (longitudinal edge) in the longitudinal direction and the peripheral edge (short edge) in the lateral direction gently bulge outward in a plan view. The degree of swelling of the long edge (short edge) may be 0.01 to 0.1 times the length of the straight line connecting both ends of the long edge (short edge). The bottom of the main body 11 may be provided with an upper bottom of the bottom of the main body (not numbered) that is raised slightly from the inside of the peripheral edge, and the first convex portion 11a of the bottom of the main body and the second convex of the bottom of the main body are provided from the upper bottom of the bottom of the main body. The portion 11b may be projected.

The first convex portion 11a at the bottom of the main body and the second convex portion 11b at the bottom of the main body may have an arch shape parallel to the short edge and adjacent to each other. The second convex portion 11b on the bottom of the main body may be closer to the center of the bottom 11 of the main body than the first convex portion 11a on the bottom of the main body. The highest peak of the second convex portion 11b at the bottom of the main body may be higher than the highest peak of the first convex portion 11a at the bottom of the main body. The first convex portion 11a at the bottom of the main body has a gently sloping surface (not numbered) inclined inward of the bottom 11 of the main body and a steeply sloping surface (not numbered) slightly bulging outward. Do not) and may have. The second convex portion 11b of the bottom of the main body may have an inclined surface (not numbered) that is inclined in the inner direction and the outer direction of the bottom of the main body 11 with the same degree of gradient. The gently sloping inclined surface inclined inward of the first convex portion 11a of the bottom of the main body may be gentler than the inclined surface inclined in the outward direction of the second convex portion 11b of the bottom of the main body. The main body bottom first convex portion 11a and the main body bottom second convex portion 11b may be arranged symmetrically with only one or both of the main body bottom 11 divided into two equal parts parallel to the short edge.

The main body boundary portion 12 is located between the main body bottom portion 11 and the main body side wall portion 13, and may be integrally provided with the peripheral edge of the main body bottom portion and the peripheral edge of the lower end of the main body side wall portion. The radius of curvature of the main body boundary portion 12 may be 10 to 18 mm, preferably 12 to 16 mm, more preferably 13 to 15 mm, and may be curved to the extent that the tips of general spoons match.

The main body side wall portion 13 may be provided so as to expand upward from the peripheral edge of the upper end of the main body boundary portion 12. The shape of the side wall portion 13 of the main body may be a rounded curved surface that bulges to the same extent as the longitudinal edge and the minor edge of the main body bottom portion 11 in a plan view. A main body having a substantially horizontal flat portion formed in a predetermined portion in the height direction of the main body side wall portion 13 (for example, near the middle or above the middle) so as to project outward from the circumferential direction of the main body side wall portion. The side wall step portion 13a may be provided. Of the main body side wall portion 13, the upper side of the main body side wall step portion 13a as a boundary may protrude outward from the lower side according to the width of the main body side wall step portion 13a, and the upper end of the main body side wall portion and the main body side wall portion An in-body fitting portion (not numbered) into which the lid 2 is internally fitted may be provided between the step portion and the step portion.

A pair of facing main body side wall step partition portions 13b may be provided at the central portion on the long side side of the main body side wall step portion 13a. The main body side wall step portion 13a may be provided on both sides of the main body side wall portion 13 with the main body side wall step partition portion 13b as a boundary, and may or may not be provided at the corner portion of the main body side wall portion.

The main body flange portion 14 has a main body flange flat portion 14a extending substantially horizontally from the peripheral edge of the upper end of the main body side wall portion 13 and a main body extending downward from the peripheral edge of the main body flange flat portion. It may have a flange inclined portion 14b. The radius of curvature of the peripheral edge of the main body flange inclined portion 14b corresponding to the corner portion of the main body flange portion 14 may be 15 to 25 mm, preferably 17 to 23 mm, and more preferably 19 to 21 mm. The angle of the main body flange inclined portion 14b with respect to the main body flange flat portion 14a may be 20 to 30 °, preferably 23 to 29 °, and more preferably 26 to 28 °.

Next, the lid 2 in the present embodiment will be described.

As shown in FIGS. 9 to 12, the lid 2 includes a flat top surface portion 21 of the lid body, a pair of chevron top surface rib portions 22 provided on the periphery of the top surface portion of the lid body, and the rib portion 22 of the top surface of the lid body. A lid side wall portion 23 provided so as to expand downward from the peripheral edge of the lid top surface portion or the lid top surface rib portion, and a lid flange portion 24 extending upward from the lower end of the lid side wall portion. And may be provided. The lid 2 may be molded of a transparent material. The shape of the lid 2 may be substantially rectangular in a plan view, and the ratio of the long side to the short side may be the silver ratio (1: √2).

The shape of the top surface portion 21 of the lid may be a substantially rectangular shape in which the longitudinal edge and the lateral edge gently bulge outward in a plan view. The degree of swelling of the long edge (short edge) may be 0.01 to 0.1 times the length of the straight line connecting both ends of the long edge (short edge).

The lid top surface rib portion 22 corresponds to the boundary portion between the lid body top surface portion 21 and the lid side wall portion 23, and the central portion of the longitudinal edge of the lid top surface portion (32.5 on both sides from the center of the longitudinal edge). It may be provided on the entire short edge from the portion other than the portion (up to 37.5 mm). The end face shape of the cross section crossing the lid top surface rib portion 22 is a lid steep surface rib steep slope portion 22a that is steeply inclined outward with respect to the lid top surface portion 21, and this steeply inclined portion inward. It may be a mountain shape having a lid surface rib gently inclined portion 22b which is inclined more gently. Of the lid top surface rib portions 22, the lid top surface rib end portion 22c on the longitudinal edge of the lid top surface portion 21 is gently curved and continuously provided on the lid top surface portion while expanding in a V shape. You may be doing it.

The lid side wall portion 23 may be provided so as to extend downward from the peripheral edge of the lid top surface rib portion 22 or the peripheral edge of the lid top surface portion 21 on which the lid top surface rib portion is not provided. The shape of the side wall portion 23 of the lid may be a rounded curved surface that bulges to the same extent as the longitudinal edge and the minor edge of the top surface portion 21 of the lid in a plan view.

The lid flange portion 24 includes a lid flange inner fitting portion 24a erected upward after extending outward substantially horizontally from the peripheral edge of the lower end of the lid side wall portion 23, and the lid inner fitting portion 24a. It may have a lid flange tip portion 24b extending substantially horizontally from the peripheral edge of the lid. A pair of degassing holes may be provided in the central portion on the long side side of the lid flange tip portion 24b.

Next, the middle plate 3 in the present embodiment will be described.

As shown in FIGS. 13 to 18, the middle plate 3 includes a middle plate bottom portion 31 for accommodating food, a middle plate side wall portion 32 provided so as to expand upward from the peripheral edge of the middle plate bottom portion, and the middle plate. A flat inner plate flange portion 33 provided so as to expand downward from the upper end of the side wall portion via a substantially horizontal flat inner plate side wall upper end portion 33a may be provided. The shape of the middle plate 3 may form a substantially pentagon in a plan view, and may be the same as the plan view shape of the bottom portion 1 of the main body or the half side of the lid body 2.

The middle plate bottom portion 31 may have a middle plate bottom convex portion 31a having substantially the same shape as the main body bottom first convex portion 11a protruding upward (inward direction of the middle plate 3). The shape of the bottom portion 31 of the inner plate may be substantially pentagonal in a plan view. The shape of the boundary portion between the middle plate bottom portion 31 and the inner plate side wall portion 32 on the center side of the container body 1 is such that the inner plate 3 is placed on the container body and is outside the second convex portion 11b at the bottom of the main body. It may coincide with the inclined surface.

The middle plate side wall portion 32 may have a middle plate side wall upper end portion 32a extending substantially horizontally from the upper end and having a stepped shape with partially different heights. The shape of the side wall portion 32 of the middle plate is the same as that of the bottom portion 31 of the middle plate at the lower end, and may change from a substantially pentagonal shape to a substantially trapezoidal shape as it approaches the upper end. The upper end portion 32a of the side wall of the middle plate may be located higher than the flange portion 14 of the main body in a state where the middle plate 3 is placed on the container main body 1.

The upper end portion 32a of the inner plate side wall is formed by forming a substantially trapezoidal opening in a plan view, the inner end edge 32ax of the upper end of the inner plate side wall, and the inner end edge 32a of the upper end of the inner plate side wall. It is composed of an upper end outer end edge 32ay and a middle plate side wall upper end concave portion 32az provided between the inner end edge of the upper end of the inner plate side wall and the outer end edge of the upper end of the inner plate side wall. You may.
The inner edge 32ax of the upper end of the side wall of the middle plate and the outer edge 32ay of the upper end of the side wall of the middle plate may be at substantially the same height (on substantially the same horizontal plane) from the bottom portion 31 of the middle plate. The width (or chamfering radius) of the apex of the inner end edge 32ax of the upper end of the inner plate side wall and the outer end edge 32ay of the upper end of the inner plate side wall may be such that the lid is in line contact with the rib portion 22 on the top surface of the lid when the lid is closed. The distance from the inner edge 32ax of the upper end of the side wall of the middle plate to the outer edge 32ay of the upper end of the side wall of the middle plate (width of the concave portion 32az of the upper end of the side wall of the middle plate) is the depth of the concave portion 32az of the upper end of the side wall of the middle plate (inner end of the upper end of the side wall of the middle plate). It is desirable that the height is at least twice the height from the apex of the edge 32ax and the outer edge 32ay of the upper end of the inner plate side wall to the lowest point of the concave portion 32az of the upper end of the inner plate side wall. If it is 2 times or less, the distance between the rib portion 22 on the top surface of the lid and the concave portion 32az at the upper end of the side wall of the inner plate is too wide, and the airtightness of the inner plate 3 is lowered.

The middle plate flange portion 33 is provided so as to expand downward from the outer peripheral edge of the upper end portion 32a of the inner plate side wall, and even if it has the middle plate flange tip portion 33a extending substantially horizontally from the lowermost end. good. The middle plate flange tip portion 33a may be at the same height as the main body side wall step portion 13a in a state where the middle plate 3 is placed on the container main body 1. The side surface of the countersunk flange portion 33 may be provided with ribs (not numbered) in the vertical or horizontal direction to increase the rigidity. A part of the tip portion 33a of the middle plate flange may be provided with a knob having a predetermined length for tilting or lifting the middle plate 3.

Next, the structure of the packaging container in the present embodiment will be described in detail with reference to FIGS. 1 and 2.

When the middle plate 3 is placed on the main body bottom portion 11 of the container main body 1, the middle plate bottom convex portion 31a of the middle plate bottom portion 31 covers the main body bottom first convex portion 11a of the main body bottom portion, and the middle plate bottom portion 31 Of the boundary portion between the inner plate side wall portion 32 and the inner plate side wall portion 32, the central side of the container main body 1 may be fitted between the main body bottom first convex portion 11a and the main body bottom second convex portion 11b.
As a result, the shape of the bottom plate 31 of the middle plate matches the shape of the first convex portion 11a of the bottom of the main body and the second convex portion 11b of the bottom of the main body, so that the middle plate 3 is displaced from the predetermined position with respect to the bottom portion 11 of the main body. I'm preventing it.

Further, the tip portion 32a of the inner plate flange may be placed on the stepped portion 13a on the side wall of the main body, and the corner portion of the tip of the flange of the inner plate on the central side of the container body 1 may come into contact with the stepped partition portion 13b on the side wall of the main body. ..
As a result, the shape of the middle plate flange tip portion 32a matches the shape of the main body side wall step portion 13a including the main body side wall step partition portion 13b, so that the middle plate 3 deviates from a predetermined position with respect to the main body side wall portion 13. Is being prevented.

Further, when the lid 2 is attached to the container body 1, the top rib portion 22 of the lid may cover the upper end 32a of the side wall of the inner plate. That is, the lid top surface rib end portion 22c may come into contact with the stepped shape of the upper end portion 32a of the inner plate side wall.
As a result, the shape of the upper end portion 32a of the side wall of the inner plate matches the shape of the rib 22 on the top surface of the lid, so that the inner plate 3 is prevented from being displaced from a predetermined position with respect to the top surface portion 21 of the lid.

Further, of the upper end portion 32a of the inner plate side wall, the inner end edge 32ax of the upper end of the inner plate side wall and the outer end edge 32ay of the upper end of the inner plate side wall are in line contact with the back side of the lid top surface portion 21 and the lid top surface rib portion 22. A state may be formed in which the concave portion 32az at the upper end of the side wall of the dish does not come into surface contact with the rib portion on the top surface of the lid (forms a predetermined gap).
As a result, the inner edge 32ax of the upper end of the side wall of the middle plate and the outer edge 32ay of the upper end of the side wall of the middle plate come into contact with the top surface portion 21 of the lid and the rib portion 22 of the top surface of the lid, and are in a desired fixed and sealed state with respect to the inner plate 3. The concave portion 32az at the upper end of the side wall of the middle plate is interposed to prevent the occurrence of a capillary phenomenon in which water of food permeates from the inner edge of the upper end of the side wall of the middle plate to the outer edge of the upper end of the side wall of the middle plate.

Therefore, the following effects may be expected when the structure and operation of the inner plate of the packaging container and the packaging container provided with the inner plate in the above-described embodiment are summarized.

That is, in the inner plate 3 of the packaging container in the present embodiment, the upper end portion 32a of the side wall of the inner plate that abuts on the top surface portion 21 of the lid body 2 when the lid is closed has an inner end edge and an outer end edge that form an opening. By having the concave portion 32az at the upper end of the side wall of the middle plate having both ends, the inner edge 32ax of the upper end of the side wall of the middle plate and the outer edge 32ay of the upper end of the side wall of the middle plate are in line contact with the top surface of the lid (upper end of the side wall of the middle plate). Since the portion 32a does not come into surface contact), misalignment with respect to the container body 1 and the lid is prevented, and moisture from the inside (for example, food juice, oil, water droplets obtained by cooling steam due to heating, etc.) is introduced to the side wall of the inner plate. It is possible to avoid the capillary phenomenon of moving beyond the inner edge of the upper end to the outer edge side of the upper end of the inner plate side wall. That is, since the concave portion 32az at the upper end of the side wall of the inner plate avoids the generation of surface tension with respect to the water near the inner end edge 32ax of the upper end of the side wall of the middle plate, most of the water can be retained along the inner end edge, so that the lid is closed. It can be expected to have an effect of preventing water from flowing out at least beyond the outer edge 32ay of the upper end of the side wall of the inner plate.

Further, the inner edge 32ax of the upper end of the side wall of the middle plate and the outer edge 32ay of the upper end of the side wall of the middle plate are in contact with the top surface portion 21 of the lid body 1 at the same height, so that the sealing effect of the middle plate 3 is obtained. improves. That is, pressure is applied substantially evenly from the lid top surface 21 of the closed lid 2 fitted to the container body 1 to the inner end edge 32ax of the upper end of the inner plate side wall and the outer end edge 32ay of the upper end of the inner plate side wall. In addition to preventing foreign matter from entering the inner plate 3, the effect of maintaining the quality of the contents can be expected.

Further, the packaging container according to the present invention includes the above-mentioned inner plate 3, the container body 1, and the lid 2, so that, for example, the food that flows out beyond the upper end portion 32a of the inner plate side wall of the inner plate. It is possible to prevent juice leakage and maintain the sealed state of the inner plate, which can contribute to the quality assurance of food.

The container body 1, the lid 2, and the inner plate 3 in the present embodiment are thermoformed from a synthetic resin sheet by, for example, vacuum forming, hot plate compressed air forming, vacuum forming, double-sided vacuum forming, or the like. Is formed by. The synthetic resin sheet may be, for example, a polyester resin such as polyethylene terephthalate, a styrene resin such as polystyrene, or an olefin resin such as polypropylene, and a single-layer or multi-layer sheet may be used. As the resin, for example, if a foamed resin is used, it is preferable because it is lightweight and has heat insulating properties. Further, the front surface or the back surface of the sheet may be covered with a synthetic resin film, and when the front surface is covered, printing may be performed. The thickness of the synthetic resin sheet is not particularly limited, but may be 0.15 to 0.5 mm, preferably 0.18 to 0.45 mm, and more preferably 0.2 to 0.35 mm.

The packaging container in the present invention, and the container body, lid, and inner plate of the packaging container are not limited to food manufacturing and retailing, but are used in, for example, industries related to eating and drinking, advertising, entertainment, medical care, nursing care, and toys for children. Widely available.

1 Container body 11 Main body bottom 11a Main body bottom 1st convex part (main body bottom convex part, 1st convex part)
11b Main body bottom second convex portion (second convex portion 11)
12 Main body boundary 13 Main body side wall 13a Main body side wall step 13b Main body side wall step partition 14 Main body flange 14a Main body flange Flat part (flat part)
14b Main body flange inclined part 2 Lid body 21 Lid body top surface part 22 Lid body top surface rib part 22a Lid body top surface rib steeply inclined part (steep inclined part)
22b Loosely inclined part of lid top surface rib (slowly inclined part)
22c Top rib end of the lid 23 Side wall of the lid 24 Flange of the lid 24a Fitting in the flange of the lid 24b Tip of the flange of the lid 3 Middle plate 31 Bottom of the middle plate 31a Convex part of the bottom of the middle plate 32 Side wall of the middle plate 32a Middle plate side wall upper end 32ax Middle plate side wall upper end inner edge 32ay Middle plate side wall upper end outer edge 32az Middle plate side wall upper end concave part 33 Middle plate flange 33a Middle plate flange tip

Claims (4)

It consists of a container body and a lid for closing the container body.
The container body has a medium plate means for separating and storing foods having properties different from those of other foods.
The inner plate means has an upper end that contacts the top surface of the lid when the lid is closed.
Upper portion includes a edge inner forming an opening which is sealed by the top part of the lid,
An outer edge that is separated from the inner edge to the outside,
It has a concave portion formed between the inner edge and the outer edge,
When the lid is closed
A packaging container characterized in that only the inner edge and the outer edge are formed so as to come into contact with the top surface of the lid by line contact. The packaging container according to claim 1, wherein the inner edge and the outer edge are in contact with the top surface of the lid at the same height. The middle plate means is a middle plate that can be separated from the container body.
The packaging container according to claim 1 or 2. An inner plate used by being incorporated in a packaging container consisting of a container body and a lid for closing the container body.
Separately store foods with different properties from other foods,
Bei example abutting upper portion on the top surface portion of the lid when closed,
Upper portion includes a edge inner forming an opening which is sealed by the top part of the lid,
An outer edge that is separated from the inner edge to the outside,
It has a concave portion formed between the inner edge and the outer edge,
During Closing dish in only the inner edge and outer edge are you characterized by <br/> formed so as to abut in a line contact with the top surface of the lid.

Images