JP2018167903A - Packaging container - Google Patents

Abstract

To provide a packaging container which realizes exhaust treatment suitable for functionality and designability according to an inner fitting type.SOLUTION: A container body 1 having at least a body fitting part 13 that is fitted in a lid body fitting part 24 of a lid body 2 and a body flange part 14 that extends outward from the upper end of the body fitting part. The body fitting part has a steam vent groove part 133 extending from the inside of the container body to the inner peripheral edge of the body flange part, and the steam vent groove part may be closed by a lid flange part 25 of the lid body 2 overlapping with the body flange part when the lid is closed.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a packaging container in which heatable food is stored and a plurality of foods can be stacked at the time of distribution or sales at a store.

  Conventionally, in retail stores such as supermarkets, convenience stores, and department stores, for example, freshly cooked food or food that needs to be cooked in a microwave oven is stored in a predetermined packaging container and sold over the counter. At this time, the packaging container has been devised to make it easier for consumers to see the food stored at the time of sale or to make it difficult to break during distribution. That is, in order to improve the commercial value, there has been a demand for improvement of packaging containers as well as food.

  For example, steam generated from warm food may make the food moist, the packaging container may become cloudy and it will be difficult to see the food inside, and water droplets may flow down into the packaging container, reducing product value. . Then, the idea which provides a groove-shaped exhaust structure in the flange part of the container main body which comprises the packaging container, or the flange part of a cover body is proposed (for example, refer patent document 1). Specifically, the inside of the flange portion of the lid body is fitted to the outside of the flange portion of the container body (so-called “outside fitting type”), and the flange portion of the lid body covers the flange portion of the container body. By covering, the exhaust structure becomes the only exhaust passage that communicates from the inside of the packaging container to the outside, and the structure is such that foreign matter does not easily enter the inside from the outside of the packaging container.

  Further, in view of the speed of distribution and the efficiency of display space in stores, there is a risk that the lower packaging container (in particular, the lid) may be crushed by stacking another product on the product. Then, the idea which chamfers the corner | angular part of the cover body in which a load is most easily added is proposed (for example, refer patent document 2). Specifically, by having a chamfered portion from the corner portion of the flat top surface portion toward the bent corner portion of the side wall portion, the structure is configured to disperse stress during stacking that tends to concentrate on the four corner portions of the lid. Yes.

JP 2007-276835 A Design Registration No. 1352511

  However, the exhaust structure described in Patent Document 1 is difficult to apply to a structure in which the outside of the predetermined portion of the lid is fitted to the inside of the predetermined portion of the container body (so-called “internal fitting type”). That is, in the inner fitting type, since each flange portion is located outside the fitting portion between the container body and the lid, the concave groove provided in the flange portion not only can not function as an exhaust structure, Foreign matter is easy to enter from the groove. Further, in both the external fitting type and the internal fitting type, since the thinly formed lid body covers from the top of the container main body, if the concave groove is on the lid body side, it is partially from the surface of the flange portion of the lid body. There is a risk that it may protrude and impair the design. Therefore, an exhaust structure that exhibits an exhaust function even in an internal fitting type packaging container, prevents entry of foreign matter from the outside, and does not impair the appearance design is desired.

  Further, in the chamfered portion described in Patent Literature 2, consideration is not given to the load resistance with respect to the end portion of the chamfered portion located on the top surface portion side of the lid. That is, if a plurality of packaging containers are stacked or subjected to vibration in the stacked state, a load is applied to the entire top surface portion, and stress is likely to concentrate on the end portion of the chamfered portion, which may be bent from the center. There is. Furthermore, if the area of the chamfered portion is large, the ratio of the chamfered portion to the top surface portion or the side wall portion of the lid body increases, so that the inside of the packaging container may be difficult to see. Therefore, a chamfered structure is desired which has higher rigidity than the conventional one and does not impair visibility.

  In recent years, there are plenty of types of food to be stored, so there is room for improving the shape of the packaging container according to the characteristics of the food. For example, in flat foods (for example, okonomiyaki) where a liquid source is applied to the surface or a plurality of solid ingredients are scattered on the surface, the sauce flows down from the surface or the solid ingredients roll down. The shape which assists a suitable arrangement | positioning state is desired. Further, when the steam generated from the warm food is cooled and becomes water droplets, the food may become moistened by staying in the container body, so that a shape that makes it difficult for the food to suck the water droplets is desired. Furthermore, as the price of foods rises, consumers may feel a decrease in volume due to the adjustment of the amount of food, so a shape that reinforces the height of food placement is desired. In addition, it may depend on the experience and skill of the operator to arrange several types of food in the same arrangement using the same packaging container, so there is a shape that reduces the burden of food preparation for the operator. desired.

  Therefore, a first object of the present invention is to provide a packaging container that realizes an exhaust treatment suitable for the functionality and design associated with the internal fitting type. A second object of the present invention is to provide a packaging container that realizes improvement in rigidity and visibility of contents when a plurality of stacks are made. A third object of the present invention is to provide a packaging container that can improve the quality of a plurality of foods including flat foods and improve the working efficiency of the serving.

  In order to solve the above-described problems, a packaging container according to the present invention includes a body fitting portion that fits inside a fitting portion of a lid, and a body flange that extends outward from the upper end of the body fitting portion. And the main body fitting portion has a steam vent groove extending from the inside of the container main body to the inner peripheral edge of the main body flange portion, and the steam vent groove when the lid is closed It is good also as closing by the flange part of the above-mentioned lid which overlaps with a main part flange part.

  Moreover, it is desirable that the main body flange portion has a stepped portion that raises a portion located on the outside, and the stepped portion turns up the tip of the flange portion of the lid.

  Further, the steam vent groove portion is disposed at a position corresponding to a corner portion of the substantially rectangular container body, and the front end of the flange portion of the lid body corresponds to a portion that is wide enough to be picked when the lid is opened, And it is desirable to be located at the corner of the container body when the lid is closed.

  The packaging container according to the present invention includes a substantially rectangular top surface portion, a lid side wall portion connected downward from the periphery of the top surface portion, and a corner portion of the lid side wall portion from a corner portion of the top surface portion. The chamfered portion includes a chamfered portion chamfered toward the corner, and the chamfered portion includes a chamfered straight end corresponding to a boundary with the corner portion of the top surface portion and a corner portion of the side wall portion. A chamfered arc end corresponding to the boundary may be configured to be directly connected.

  Moreover, it is desirable that the lid side wall portion has lid side wall rib portions that are located on both sides of the chamfered portion and vertically cut from the periphery of the top surface portion.

  The packaging container according to the present invention includes a container body having at least a bottom portion on which the contents are placed, the bottom portion includes a base portion that supports the contents from below, and the base portion is It may be characterized by being higher as it is located outward from the center of the bottom.

  Moreover, it is desirable that a plurality of the base portions are provided intermittently in the circumferential direction of the bottom portion.

Moreover, it is desirable that the base portion is further provided integrally and at the same height at the center of the bottom portion.

  The “chamfered arc end” constituting the chamfered part corresponds to a part of the circumference having a predetermined radius of curvature, and the chamfered straight end and the chamfered arc end are “directly connected”. "A structure" may mean that there is no other shape (for example, another straight line or another arc) between the chamfered straight line end and the chamfered circular arc end. That is, the larger the radius of curvature of the circumference forming the chamfered arc end, the closer to the chamfered straight end.

  “The base is high enough to be located outward from the center of the bottom” means that the base is bent from the center to the outside of the bottom, or the center of the bottom is the same height and the outside is closer to the bottom. You may mean what was formed high. The “base part” may be one in which the central part and the outer part are integrally formed, or may be formed separately, or may be a predetermined region or partly protruding, and is substantially square in plan view. Shape, substantially rectangular shape, substantially circular shape, substantially elliptical shape, substantially arc shape, substantially linear shape, or substantially donut shape.

  “The base is intermittently provided in a plurality in the circumferential direction of the bottom” means that at least two or more bases are arranged at predetermined intervals on the same and / or different circumferences in the bottom. May mean.

  The packaging container according to the present invention is provided in the main body fitting portion of the container main body to be fitted into the fitting portion of the lid body, and the steam vent groove portion extending from the inside of the container main body to the inner peripheral edge of the main body flange portion is closed. By closing the lid with the flange part of the lid that overlaps with the flange part of the main body at the time of the lid, it is possible to prevent foreign matter from entering the container body from the outside during normal times, and when steam from food is generated, the steam is removed from the container body through the steam vent groove. Since steam can be released to the outside, it can be expected to prevent food explosion and lid rupture. Furthermore, since the steam vent groove is hidden and not conspicuous when the lid is closed, the possibility of impairing the design of the entire packaging container is extremely low.

  In addition, since the stepped portion of the main body flange portion flips up the front end of the flange portion of the lid when the lid is closed, the front end side of the main body flange portion does not face the flange portion of the lid, so that steam from food The effect that it is easy to discharge | emit vapor | steam outside from a vapor | steam vent groove part at the time of generation | occurrence | production can be anticipated. In other words, it is possible to prevent a foreign matter from being mixed in a normal state and to have a check valve effect that easily releases steam when steam is generated from food.

  Further, the steam vent groove part and the wide part at the tip of the flange part of the lid body, which are wide enough to be picked when the lid is opened, are arranged at positions corresponding to the corner parts of the equivalent container body, so that the flange of the lid body Since the tip of the part can also be used as a knob when opening the lid, the structure for opening the lid of the packaging container can be easily equipped with a structure that releases vapor of food, improving usability Can also be expected.

  Further, the packaging container according to the present invention has a chamfered straight end portion in which a chamfered portion chamfered from the corner portion of the lid body toward the corner portion of the lid side wall portion corresponds to a boundary with the corner portion of the top surface portion. The rigidity of the chamfered portion can be expected to be improved by directly connecting the chamfered arc end portion corresponding to the boundary between the corner portion of the lid side wall portion. In other words, the chamfered circular arc end curved downward absorbs the stress applied to the entire chamfered portion through the chamfered straight end like a cushion, so that the effect of preventing breakage of the chamfered portion is achieved. I can expect. In addition, even if the chamfered straight edge is bent due to stress concentration due to load, the chamfered arc edge receives the stress, avoiding damage to the corner of the lid side wall that passes under the chamfered arc edge. Can also be expected.

  In addition, since the lid side wall ribs are located on both sides of the chamfered portion and cut longitudinally from the periphery of the top surface, the stress applied to both ends of the chamfered straight end can be dispersed. The effect of further increasing the rigidity of the part can be expected. Furthermore, even if the chamfered straight end is bent due to the stress concentration caused by the load, the lid side wall rib portion receives the stress, so that the effect of avoiding damage to the top surface portion that leads to the lid side wall rib portion can also be expected.

  In addition, the packaging container according to the present invention supports the contents from below and has a base portion that is so high as to be located outward from the center of the bottom portion. It can be expected to increase the outside. That is, in a flat food, a liquid material (for example, sauce or sauce) applied to the surface does not flow down from the outer edge of the food and tends to gather near the center, so that the quality of the food can be maintained.

  In addition, since a plurality of base portions are provided intermittently in the circumferential direction of the bottom portion, it is possible to provide a gap between the outer side of the highly placed food and the bottom portion, so that the food is less likely to be moist. Can also be expected. That is, the water droplets from the food that has flowed to the bottom through the side wall portion of the container main body enter the gap between the outer side of the food that has become higher at the base and the bottom, so the outer side of the food becomes damp. Can be expected, and the effect of maintaining the food in a desired state can be expected.

  In addition, since the base part is provided integrally and at the same height in the center of the bottom part, not only the outer side of the food but also the central part can be placed higher, so that the whole food is positioned higher than the bottom part. You can expect the effect to be placed on. That is, the base part of the same and the same height provided in the center stably supports the food center near the predetermined height, and the base near the outside further supports the food outside. Therefore, the effect of amplifying the volume of food can be expected.

It is a perspective view which shows an example of the packaging container in one Embodiment of this invention. It is a perspective view which shows an example of the container main body of the said packaging container. It is a top view which shows an example of the container main body of the said packaging container. It is a bottom view which shows an example of the container main body of the said packaging container. It is a front view which shows an example of the container main body of the said packaging container. It is a right view which shows an example of the container main body of the said packaging container. It is the elements on larger scale which show an example of the container main body of the said packaging container. It is a perspective view which shows an example of the cover body of the said packaging container. It is a top view which shows an example of the cover body of the said packaging container. It is a bottom view which shows an example of the cover body of the said packaging container. It is a front view which shows an example of the cover body of the said packaging container. It is a right view which shows an example of the cover body of the said container for packaging. It is the elements on larger scale which show an example of the cover body of the said packaging container. It is the elements on larger scale which show an example of the container main body with which the cover body of the said packaging container was mounted | worn.

Hereinafter, the details of the packaging container according to an embodiment of the present invention (hereinafter also referred to as “the present packaging container”) will be described with reference to FIGS. In these drawings, a plurality of identical parts may be numbered only in one part. In addition, as for a part that cannot be confirmed on the drawing and cannot be seen, there are some parts where the corresponding part and the lead line of the part are indicated by broken lines. Further, when the rear view and the left side view are the same or symmetrical, the rear view and the left side view are omitted.
Note that the orientation of the packaging container may be based on the normal direction in which the consumer faces the packaging container, and this normal orientation may be the front of the packaging container. The nearer side may be expressed as the near side, the far side as the rear 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.

The packaging container may include a container body 1 on which food (for example, okonomiyaki) is placed and a transparent lid 2 that closes the opening of the packaging container. The shape of the packaging container in the normal direction may be a substantially square shape having the same length of each side in plan view.
The food stored in the packaging container may be other than okonomiyaki (for example, yakisoba or takoyaki), and is not limited. The shape and dimensions of the packaging container may be any as long as they can be displayed in a supermarket or a convenience store, and are not limited.

  As shown in FIG. 1, the packaging container includes, for example, a main body fitting portion 13 that fits inside the lid fitting portion 24 of the lid body 2, and outward from the upper end of the main body fitting portion. A container body 1 having at least a body flange portion 14 extending, and the body fitting portion has a steam vent groove 133 extending from the inside of the container body to the inner peripheral edge of the body flange portion. The steam vent groove portion may be closed by the lid flange portion 25 of the lid body 2 that overlaps with the main body flange portion when the lid is closed.

  Further, the main body flange portion 14 may have a main body flange stepped portion 141 that raises the portion located on the outer side, and this main body flange stepped portion may turn up the tip of the cover body flange portion 25 of the cover body 2. .

  Further, the steam vent groove portion 133 is disposed at a position corresponding to the corner portion of the substantially rectangular container body 1, and the tip of the lid flange portion 25 of the lid body 2 is a portion that is wide enough to be picked when the lid is opened. It may correspond to the knob 251 and may be positioned at a corner portion of the container body when the lid is closed.

  As shown in FIG. 1, the packaging container includes a substantially rectangular top surface portion 21, a lid side wall portion 22 connected downward from the periphery of the top surface portion, and a corner portion of the top surface portion. A chamfered portion 2 having a chamfered portion 23 chamfered toward a corner portion of the lid side wall portion, and the chamfered portion corresponding to a boundary with the corner portion of the top surface portion. The chamfered arc end portion 232 corresponding to the boundary between H.231 and the corner portion of the side wall portion may be directly connected.

  The lid side wall 22 may have lid side wall ribs 221 that are located on both sides of the chamfered portion 23 and are vertically cut from the periphery of the top surface 21.

  In addition, as shown in FIG. 1, the packaging container includes a container body 1 having at least a bottom 11 on which the contents are placed, and the bottom has a base portion 13 that supports the contents from below. And this base part may be so high that it is located outside from the center of this bottom part.

  Further, it is desirable that a plurality of the base portions 13 are provided intermittently in the circumferential direction of the bottom portion 11.

  Further, the base portion 13 may be further provided integrally and at the same height at the center of the bottom portion 11.

  Next, the structure of each part which comprises this packaging container is demonstrated in detail.

As shown in FIGS. 2 to 7, the container main body 1 includes a bottom portion 11 having a substantially square shape in plan view on which food is placed, a main body side wall portion 12 rising upward from a peripheral edge of the bottom portion, and the main body side wall. You may have the main body fitting part 13 located in the upper part of a part, and the main body flange part 14 extended outward from the upper end of this main body fitting part.
Note that the bottom 11 may have each side gently curved outward or each corner may be bent, and may have a substantially rectangular shape, a substantially circular shape, or a substantially oval shape in plan view. There is no.

The bottom portion 11 has a substantially square and flat mounting portion 111 arranged in a predetermined range from the center, and a mounting portion 111 disposed on the periphery of the mounting portion and having a lower height than the mounting portion. You may have the placement peripheral part 112. The placement peripheral edge portion 112 may correspond to a leg portion that comes into contact with the stand when the container body 1 is placed on a predetermined stand. According to this configuration, since the placement unit 111 is disposed at a higher position than the overall height of the container body 1, an improvement in the volume feeling of the food can be expected, and juice, oil, Alternatively, it can be expected to be used as a water storage area for water vapor (hereinafter also referred to as “juice etc.”).
The mounting portion 111 may further include a base portion 113 that supports food from below, and a mounting groove portion 114 that is adjacent to the base portion and has a predetermined depth that can store water such as juice that comes from the food. Good.
The placement unit 111 may have a substantially rectangular shape, a substantially circular shape, or a substantially elliptical shape in plan view, and is not limited. The height difference between the mounting portion 111 and the mounting peripheral portion 112 may be, for example, 2 to 7 mm, preferably 3 to 5 mm, and is not limited.

The base portion 113 includes a stage portion 113a that protrudes over a predetermined range from the center of the mounting portion 111, and a plurality of protrusions that intermittently protrude from the periphery of the stage portion in the circumferential direction of the mounting portion. The rib portion 113b may be included. The placement groove portions 114 may be arranged in symmetrical directions on the four sides of the stage portion 113a, and are composed of the placement portion 111 and a plurality of linear grooves substantially parallel to the respective sides of the stage portion. Also good. The plurality of grooves constituting the mounting groove portion 114 pass through the center of the stage portion 113a and have the mounting groove gap portions 114a at predetermined intervals located on straight lines orthogonal to the respective sides of the stage portion as boundaries. Further, it may be arranged on both sides of the placement groove gap. According to this structure, the placement groove gap 114a serves as a mark for placing food on the placement portion 111. For example, different kinds of food can be placed on the placement portion 111 with respect to the placement groove gap. It may be arranged on the near side and the far side as a boundary.
In addition, there is no limitation in the shape, dimension, and position of the base part 113, the mounting groove part 114, and the mounting groove gap part 114a. The placement groove 114 may exhibit a function of storing food juice or the like, a function of increasing the rigidity of the placement part 111, and a function of preventing slipping of the placed food.

The stage part 113a may be arranged in a flat shape in substantially the same shape as the mounting part 111 (substantially square shape in plan view) and in the same direction. The stage portion 113a may be provided with linear stage groove portions 113ax on both diagonal lines. According to this structure, the stage groove 113ax serves as a mark for placing food on the mounting portion 111. For example, different types of food can be obliquely inclined with respect to the mounting portion 111 as a boundary. It may be arranged separately.
The stage portion 113a may have a substantially rectangular shape, a substantially circular shape, or a substantially oval shape in a plan view, and is a flat slope shape or a curved shape that warps outward in an end face view on a diagonal cut surface. But there is no limit. The height difference between the stage portion 113a and the placement portion 111 may be, for example, 2 to 7 mm, preferably 3 to 5 mm, and is not limited. There is no limitation on the shape, size, and position of the stage groove 113ax. The stage groove portion 113ax may exhibit a function of storing food juice and the like, a function of increasing the rigidity of the stage portion 113a, and a function of removing steam generated from under the placed food.

The rib portions 113b are arranged on both diagonal lines of the mounting portion 111 (on the extension line of the stage groove portion 113ax) and between each of the corner portions of the mounting portion and each of the corner portions of the stage portion 113a. Also good. The rib portion 113b may include a low rib portion 113bx that is substantially the same height as the stage portion 113a and a high rib portion 113by that is located outside the low rib portion and is higher than the low rib portion. According to this structure, since the high rib portion 113by supports the four corners of the food placed on the mounting portion 111 from below, the height of the center may be lower than the height of the four corners of the food. At this time, the low rib portion 113bx between the stage portion 113a and the high rib portion 113by may prevent the food from bending or sinking.
In addition, only the high rib part 113by may be contained in the rib part 113b. The rib portion 113b may have a substantially straight or substantially curved rod shape in a plan view, and may have a circular arc shape on the end surface on the diagonal line of the stage portion 113a, or a flat slope shape or a curved shape that warps upward. Well, there is no limitation.

The main body side wall portion 12 may expand obliquely upward from the outer peripheral edge of the mounting peripheral edge portion 112. An upper end of the main body side wall portion 12 may be provided with a main body fitting portion 13 having a substantially L-shaped end surface on the cut surface in the vertical direction.
The body fitting portion 13 is erected from a body fitting flat portion 131 that extends outward from a peripheral edge of a predetermined height located at the upper portion of the main body side wall portion 12 and the peripheral edge of the main body fitting flat portion. You may be comprised with the main body fitting standing part 132. FIG. The body fitting portion 13 may further be provided with a steam vent groove 133 having a substantially L-shaped end surface on the cut surface in the vertical direction.
In addition, the height of the main body side wall part 12 may be in accordance with the height and amount of food to be served, for example, may be a height suitable for flat food (for example, okonomiyaki). The body fitting flat part 131 may be horizontal or inclined. The main body fitting upright portion 132 may have a substantially S shape in which the lower side bulges outward and the upper side is inclined inward.

The steam vent groove 133 is formed from the inside of the container main body 1 to the inner peripheral edge of the main body flange 14, provided at each corner of the main body fitting portion 13, and orthogonal to the main body fitting flat portion 131. A first steam vent passage 133a (inward and outward with respect to the container body 1) and recessed in a curved shape, and a second steam vent passage 133b recessed in a vertical and curved shape with respect to the main body fitting standing portion 132. And may be configured to communicate with each other. One end portion of the first steam vent passage 133 a may communicate with the inside of the container body 1, and one end portion of the second steam vent passage 133 b may reach the inner peripheral edge of the main body flange portion 14. According to this configuration, it is possible to expect the effect that each of the steam vent grooves 133 discharges steam from the food that easily collects in the corners of the main body fitting portion 13. Further, when the lid 2 is in the closed state, the steam generated as the temperature inside the container body 1 rises is discharged to the outside of the container body through the first steam vent passage 133a and the second steam vent passage 133b. Can be expected.
Note that the steam vent groove part 133 may be provided only at one of the corners of the main body fitting part 13 or at the opposite corner. There is no limitation on the shape and dimensions of the first steam vent passage 133a and the second steam vent passage 133b, and the width of each steam vent passage is 1 to 5 mm, preferably 1.5 to 3.5 mm, and more preferably. May be 2 to 3 mm, and the depth of each vapor vent passage may be 0.1 to 5 mm, preferably 0.5 to 3 mm, more preferably 0.8 to 1.2 mm. .

The main body flange portion 14 is provided with a main body flange step portion 141 that extends outward from the periphery of the upper end of the main body fitting standing portion 132 and increases the height outside the predetermined position. The boundary may be a substantially flat shape on the inside and a three-dimensional shape on the outside. The lower end of the main body flange stepped portion 141 may have a shape substantially equivalent to the peripheral edge of the upper end of the main body fitting standing portion 132. According to this configuration, even if the outer side of the main body flange portion 14 protrudes up and down, the flange portion of the lid body 2 may contact the inner side of the main body flange portion 14 to form a closed state. Furthermore, if the front end of the flange portion of the lid part partially protrudes outside the main body flange portion 14 via the main body flange step portion 141, this front end may be used as a knob portion when the lid body 2 is opened.
The outer side of the main body flange stepped portion 141 may be inclined so that the tip of the flange portion of the lid that comes into contact is turned up. The main body flange stepped portion 141 may partially have a height difference. For example, the portion corresponding to the four corners of the container main body 2 is low, the two sides of the four corners are high, and the space between the two sides is low. The part may be low.

  Next, the detailed structure of the lid body 2 will be described with reference to FIGS.

The lid body 2 includes a flat top surface portion 21 that has a bent corner portion, a lid side wall portion 22 that is connected downward from the periphery of the top surface portion, and has a bent corner portion, and a corner portion of the top surface portion. The chamfered portion 23 chamfered from the periphery of the lid side wall portion to the corner portion of the lid body, and the lid body extending outward from the peripheral edge of the lower end of the lid body side wall portion and fitting internally with the body fitting portion 13 You may have the fitting part 24 and the cover flange part 25 extended outward from the periphery of the upper end of this cover body fitting part.
The top surface portion 21 may be gently curved outward on each side, and may have a substantially rectangular shape, a substantially circular shape, or a substantially oval shape in plan view, and is not limited. As for the lid body side wall part 22, each wall part may bulge gently outward. The chamfered surface of the chamfered portion 23 may be flat or gently bulged outward. The lid fitting part 24 may have a shape equivalent to that of the main body fitting part 13 in the end face view on the cut surface in the vertical direction.

The chamfered portion 23 includes a straight chamfered straight end portion 231 formed by chamfering the corner portion of the top surface portion 21 and a chamfered arc end portion formed by chamfering the corner portion of the lid side wall portion 22. 232 may be included. Both ends of the chamfered arc end portion 232 may reach both ends of the chamfered straight end portion 231. According to this configuration, when another packaging container is stacked on the lid 2 at the time of distribution or display at the store, the chamfered straight end portion 231 is not only deformed at the corner portion of the top surface portion 21, but also the surface. Since the chamfered arc end 232 supports both ends of the chamfered straight end from the lower side, deformation of the chamfered straight end may be prevented.
Note that the chamfered straight end portion 231 and the chamfered arc end portion 232 may be chamfered with a predetermined curvature deformation. The angle of the chamfered straight end portion 231 with respect to each side of the top surface portion 21 may be 35 to 55 °, preferably 40 to 50 °, more preferably 43 to 47 °. The radius of curvature of the chamfered arc end 232 may be in accordance with the angle of the chamfered surface of the chamfered portion 23, may be 10 to 50 mm, preferably 15 to 45 mm, and more preferably 20 to 40 mm. Both ends of the chamfered straight end portion 231 may be connected to the respective sides of the top surface portion 21 located on both sides.

The lid side wall portion 22 is formed from the upper end of the lid side wall portion corresponding to the periphery of the top surface portion 21 located at a predetermined distance from both sides of the chamfered portion 23 to the lower end formed in a step shape. You may have the linear cover body side wall rib part 221 which inclines in the vertical direction and inclines toward the centerline which bisects the corner | angular part of a body side wall part. The lid side wall rib portion 221 may be a stepped portion formed so as to be arranged so that the corner portion of the lid side wall portion 22 is recessed from the wall portion to the inside of the lid body 2. According to this configuration, when another packaging container is stacked on the lid body 2, both lid body side wall rib portions 221 support corner portions of the lid body side wall portion 22 from both sides of the chamfered portion 23. Therefore, deformation of the chamfered portion and the lid side wall portion may be prevented.
Note that the lid side wall rib portion 221 may be a linear protrusion protruding at a predetermined height from the boundary between the corner portion and the wall portion of the lid side wall portion 22. The distance between both sides of the chamfered portion 23 and the upper end of the lid side wall rib portion 221 is to avoid a decrease in rigidity due to point contact, but is not limited thereto. The direction of the inclination of the lid side wall rib portion 221 is for avoiding a drop in the visibility of the container body 1 from the lid side wall portion 22 and preventing diffusion of water droplets adhering to the inside of the lid 2. There is no limit.

  The lid flange portion 25 may have a knob portion 251 that is partially widened from a portion corresponding to the four corners of the lid body 2 and is picked when the lid body 2 is opened. The knob portion 251 is warped through the main body flange step portion 141 when the lid body 2 is closed, inclines against the main body flange portion 14 outside the main body flange step portion, and the tip portion is outside the main body flange portion. You may protrude in the direction. The entire circumference of the lid flange portion 25 other than the knob portion 251 may abut on the entire circumference of the main body flange portion 14 inside the main body flange stepped portion 141. According to this configuration, when the lid body 2 is closed, the lid flange portion 25 abuts on the inner peripheral edge of the main body flange portion 14 and the upper end of the second steam vent passage 133b of the steam vent groove 133 is closed. The knob portion 251 may be bent away from the inner peripheral edge of the main body flange portion by being warped by the main body flange step portion 141.

  Thus, the packaging container in the present embodiment is provided in the main body fitting portion 13 of the container main body 1 that is internally fitted with the lid fitting portion 24 of the lid 2, and the main body flange portion from the inside of the container main body. The steam vent groove 133 reaching the inner peripheral edge of 14 is closed by the flange portion of the lid that overlaps with the main body flange when the lid is closed, thereby preventing foreign matter from entering the container body from the outside at normal times. When steam is generated from food, steam can be discharged from the inside of the container body to the outside through this steam vent groove, so that an effect of preventing the explosion of the food and the rupture of the lid can be expected. Further, since the steam vent groove 133 is hidden by the lid fitting portion 24 of the lid 2 and is not noticeable when the lid is closed, the possibility of impairing the design of the entire packaging container is extremely low.

  Further, the main body flange stepped portion 141 of the main body flange portion 14 turns up the front end of the lid flange portion 25 of the lid body 2 when the lid is closed, so that the front end side of the main body flange portion is the lid flange of the lid body. Since it does not face the portion, it can be expected that steam is easily released from the steam vent groove 133 when steam is generated from the food. In other words, it is possible to prevent a foreign matter from being mixed in a normal state and to have a check valve effect that easily releases steam when steam is generated from food.

  In addition, both the steam release groove portion 133 and the grip portion 251 that is wide enough to be gripped at the end of the lid flange portion 25 of the lid body 2 when the lid is opened are located at positions corresponding to the corner portions of the equivalent container body 1. Since the tip of the lid flange part of the lid can be used as a knob when opening the lid, the steam of the food is released to the structure for opening the lid of the packaging container. Can be easily installed, and usability can be improved.

  Further, in the packaging container according to this embodiment, the chamfered portion 23 chamfered from the corner portion of the lid body 2 toward the corner portion of the lid body side wall portion 22 corresponds to the boundary with the corner portion of the top surface portion. Since the chamfered arc end portion 232 corresponding to the boundary between the chamfered straight end portion 231 and the corner portion of the lid side wall portion is directly connected, the rigidity of the chamfered portion 23 can be expected to be improved. That is, the chamfered circular arc end 232 that is curved downward absorbs the stress applied to the entire chamfered portion 23 via the chamfered straight end 231 like a cushion. The effect to prevent can be expected. Further, even if the chamfered straight end portion 231 is bent due to the stress concentration caused by the load, the chamfered arc end portion 232 receives the stress. Therefore, the corner portion of the lid side wall portion 22 that passes under the chamfered arc end portion is received. It can also be expected to prevent damage.

  In addition, since the lid side wall rib portions 221 are located on both sides of the chamfered portion 23 and are vertically cut from the periphery of the top surface portion 21, the stress applied to both ends of the chamfered straight end portion 231 can be dispersed. Therefore, the effect of further increasing the rigidity of the chamfered portion can be expected. Furthermore, even if the chamfered straight end portion 231 is bent due to the stress concentration caused by the load, the lid side wall rib portion 221 receives the stress, so that the effect of avoiding the breakage of the top surface portion 21 leading to the lid side wall rib portion is also achieved. I can expect.

  In addition, the packaging container according to the present embodiment supports the contents from below, and has a base portion 113 (including a stage portion 113a and a rib portion 113b) that is higher as it is located outward from the center of the bottom portion 11. For example, in the case of a flat-shaped food, the effect of arranging the outer side higher than the center side of the food can be expected. That is, in a flat food, a liquid material (for example, sauce or sauce) applied to the surface does not flow down from the outer edge of the food and tends to gather near the center, so that the quality of the food can be maintained.

  In addition, since a plurality of base portions 113 (rib portions 113b) are intermittently provided in the circumferential direction of the bottom portion 11, a gap can be provided between the outer side of the food that is placed high and the bottom portion. Therefore, it is possible to expect an effect that the food is not easily moistened. That is, water droplets from the food that has flowed to the bottom 11 through the main body side wall 12 of the container main body 1 enter a gap between the outer side of the food that has become higher at the base 113 (rib portion 113b) and the bottom. Therefore, it is possible to prevent the outer side of the food from becoming damp and to expect the effect of maintaining the food in a desired state.

  In addition, since the base 113 (stage 113a) is provided integrally and at the same height at the center of the bottom, not only the outside of the food but also the center can be placed high, so the whole food The effect of mounting at a high position relative to the bottom 11 can be expected. That is, the base portion 113 (stage portion 113a) of the same and the same height provided in the center stably supports the food near the center at a predetermined height, and the outer base portion (rib portion 113b). ) Is higher and supports the outer side of the food, so the effect of amplifying the volume of food can be expected.

  The container body 1 and the lid body 2 according to the present embodiment are formed by thermoforming a synthetic resin sheet by sheet molding such as vacuum forming, pressure forming, vacuum pressure forming, double-sided vacuum forming, hot plate forming, etc. May be. As the synthetic resin sheet, for example, a polyester resin such as polyethylene terephthalate, a styrene resin such as polystyrene, or an olefin resin such as polypropylene 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. Furthermore, the front surface or the back surface of the sheet may be covered with a synthetic resin film, and when the 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.

DESCRIPTION OF SYMBOLS 1 Container main body 11 Bottom part 111 Mounting part 112 Mounting peripheral part 113 Base part 113a Stage part 113ax Stage groove part 113b Rib part 113bx Low rib part 113by High rib part 114 Mounting groove part 114a Mounting groove clearance part 12 Main body side wall part 13 Main body Fitting portion 131 Body fitting flat portion 132 Body fitting standing portion 133 Steam vent groove portion 133a First steam vent passage 133b Second steam vent passage 14 Main body flange portion 141 Main body flange stepped portion 2 Lid body 21 Top surface portion 22 Lid side wall portion 221 Lid side wall rib portion 23 Chamfered portion 231 Chamfer straight end portion 232 Chamfered arc end portion 24 Lid fitting portion 25 Lid flange portion 251 Knob portion

Claims (8)

A container main body having at least a main body fitting portion that fits inside the fitting portion of the lid, and a main body flange portion extending outward from the upper end of the main body fitting portion;
The main body fitting part has a steam vent groove part extending from the inside of the container main body to the inner peripheral edge of the main body flange part,
The steam release groove is closed by a flange portion of the lid that overlaps with the main body flange when the lid is closed. The main body flange portion has a stepped portion that raises a portion located outside,
The packaging container according to claim 1, wherein the stepped portion turns up the tip of the flange portion of the lid. The steam vent groove is disposed at a position corresponding to a corner portion of the substantially rectangular container body,
3. The packaging according to claim 2, wherein the end of the flange portion of the lid corresponds to a portion that is wide enough to be picked when the lid is opened, and is located at a corner of the container body when the lid is closed. container. A substantially rectangular top surface portion, a lid side wall portion connected downward from the periphery of the top surface portion, and a chamfered portion chamfered from a corner portion of the top surface portion toward a corner portion of the lid side wall portion. And a lid having
The chamfered portion is configured by directly connecting a chamfered straight end corresponding to a boundary with the corner portion of the top surface portion and a chamfered arc end corresponding to a boundary between the corner portions of the side wall portion. A packaging container characterized by that. The packaging container according to claim 4, wherein the lid side wall portion includes lid side wall rib portions that are positioned on both sides of the chamfered portion and vertically cut from a peripheral edge of the top surface portion. A container body having at least a bottom on which the contents are placed;
The bottom portion has a base portion that supports the contents from below,
The packaging container is characterized in that the base portion is higher as it is located outward from the center of the bottom portion. The packaging container according to claim 6, wherein a plurality of the base portions are provided intermittently in a circumferential direction of the bottom portion. The packaging container according to claim 6 or 7, wherein the base portion is further provided integrally and at the same height in the center of the bottom portion.

Images