JP6997528B2 - Packaging container - Google Patents

Description

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

Conventionally, in retail stores such as supermarkets, convenience stores, and department stores, for example, freshly cooked foods and foods that need to be cooked in a microwave oven have been stored in a predetermined packaging container and sold over the counter. At this time, the packaging container was devised to make the food stored at the time of sale easier for consumers to see and to make it harder to break during distribution. That is, in order to improve the commercial value, it has been required to improve not only food products but also packaging containers.

For example, steam generated from warm food may make the food damp, the packaging container may become cloudy and the food inside may be difficult to see, or water droplets may flow down into the packaging container, reducing the commercial value. .. Therefore, an idea of providing a groove-shaped exhaust structure in the flange portion of the container body and the flange portion of the lid body constituting the packaging container has been proposed (see, for example, Patent Document 1). Specifically, the inside of the flange portion of the lid is fitted to the outside of the flange portion of the container body (so-called “outer fitting type”), and the flange portion of the lid is covered with the flange portion of the container body. By covering it, the exhaust structure becomes the only exhaust passage leading from the inside of the packaging container to the outside, and the structure is such that foreign matter does not easily enter from the outside to the inside of the packaging container.

In addition, in view of the speed of distribution and the efficiency of display space in stores, stacking another product on top of the product may crush the lower packaging container (particularly the lid). Therefore, an idea of chamfering the corner portion of the lid body to which a load is most easily applied has been proposed (see, for example, 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, as a structure that disperses stress during stacking that tends to concentrate on the four corner portions of the lid. There is.

Japanese Unexamined Patent Publication No. 2007-276835 Design Registration No. 13525111 Gazette

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 “inner fitting type”). That is, in the internal fitting type, since each flange portion is located outside the fitting portion between the container body and the lid, not only the concave groove provided in the flange portion cannot function as an exhaust structure, but also. Foreign matter easily enters through the concave groove. Further, in both the outer fitting type and the inner fitting type, the lid formed in a thin wall is generally covered from the top of the container body, so if the concave groove is on the lid side, the surface of the flange portion of the lid is partially covered. There is a risk that it will protrude and impair the design. Therefore, it is desired to have an exhaust structure that exhibits an exhaust function even in an internally fitted type packaging container, prevents foreign matter from entering from the outside, and does not impair the design of the appearance.

Further, in the chamfered portion described in Patent Document 2, consideration is not given to the load capacity for 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 if they are subjected to vibration in the stacked state, a load is applied to the entire top surface portion and stress tends to be concentrated on the end portion of the chamfered portion, which may cause bending from the center. There is. Further, if the area of the chamfered portion is large, the ratio of the chamfered portion to the top surface portion and the side wall portion of the lid becomes large, so that the inside of the packaging container may be difficult to see. Therefore, a chamfered structure that has higher rigidity than the conventional one and does not impair visibility is desired.

Further, in recent years, since the types of foods to be stored are abundant, there is room for improving the shape of the packaging container according to the characteristics of the foods. For example, in a flat food (for example, okonomiyaki) where a liquid sauce is applied to the surface or multiple solid ingredients are scattered on the surface, the sauce may run off the surface or the solid ingredients may roll off. Therefore, a shape that assists in a suitable serving state is desired. Further, when the steam generated from the warm food cools and becomes water droplets, the food may stay in the container body and become moist, so a shape that makes it difficult for the food to absorb the water droplets is desired. Further, as the price of foodstuffs rises, consumers may feel a decrease in volume due to adjusting the amount of foodstuffs, so a shape that reinforces the serving height of foodstuffs is desired. Furthermore, since serving several types of food in several arrangements using the same packaging container may depend on the experience and skills of the worker, a shape that reduces the burden of serving food for the worker is available. 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 of 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 stacked. 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 work efficiency of serving.

In order to solve the above problems, the packaging container according to the present invention has a main body fitting portion that internally fits with the fitting portion of the lid, and a main body flange that extends outward from the upper end of the main body fitting portion. A container body having at least a portion thereof is provided, the main body fitting portion has a steam vent groove portion extending from the inside of the container body to the inner peripheral edge of the main body flange portion, and the steam vent groove portion is described when the lid is closed. It may be characterized in that it is closed by the flange portion of the lid body that overlaps with the flange portion of the main body.

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

Further, the steam vent groove portion is arranged at a position corresponding to a corner portion of the container body having a substantially rectangular shape, and the tip of the flange portion of the lid body corresponds to a wide portion to be picked up when the lid is opened. Moreover, it is desirable that it is located at the corner of the container body when the lid is closed.

Further, the packaging container according to the present invention has a substantially rectangular top surface portion, a lid side wall portion connected downward from the peripheral edge of the top surface portion, and a corner portion from the corner portion of the top surface portion to the corner portion of the lid side wall portion. The cover is provided with a chamfered portion that is chamfered toward It may be characterized in that it is directly connected to the end of the chamfered arc corresponding to the boundary.

Further, it is desirable that the side wall portion of the lid body is located on both sides of the chamfered portion and has rib portions on the side wall surface of the lid body longitudinally extending from the peripheral edge of the top surface portion.

Further, the packaging container according to the present invention includes a container body having at least a bottom on which the contents are placed, the bottom having a base for supporting the contents from below, and the base having the base. It may be characterized in that it is higher from the center of the bottom to the outside.

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

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

The "chamfered arc end" constituting the chamfered portion 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". The "structure" may mean that no other shape (eg, another straight line or other arc) is interposed between the end of the chamfered straight line and the end of the chamfered arc. That is, the larger the radius of curvature of the circumference constituting the chamfered arc end, the closer to the chamfered straight end.

"The base" is "higher as it is located from the center of the bottom to the outside" means that it is formed by warping from the center of the bottom to the outside, or the center of the bottom is the same height and the outside is from the bottom. It may mean something that is formed high. The "base portion" may be one in which the center side and the outer side are integrally formed or separately formed, or may be a predetermined region or a partially protruding portion, and may be a substantially square shape in a plan view. It may have a shape, a substantially rectangular shape, a substantially circular shape, a substantially elliptical shape, a substantially arc shape, a substantially straight line shape, or a substantially donut shape.

"A plurality of" bases "are provided intermittently 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 body that internally fits with the fitting portion of the lid, 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 at the flange part of the lid that overlaps with the flange part of the main body at the time of lid, it is possible to prevent foreign matter from entering the inside of the container body from the outside during normal times, and when steam is generated from food, the inside of the container body is closed through the steam vent groove. Since steam can be released to the outside, it can be expected to have a preventive effect on food explosion and lid rupture. Further, when the lid is closed, the steam vent groove portion is hidden by the fitting portion of the lid body and is inconspicuous, so that the risk of impairing the design of the entire packaging container is extremely low.

In addition, since the stepped portion of the main body flange portion turns up the tip of the flange portion of the lid when the lid is closed, the tip end side of the main body flange portion does not face the flange portion of the lid body, so that steam from food is used. It can be expected to have the effect of easily releasing steam from the steam vent groove to the outside when it occurs. That is, it can be expected to have a check valve effect that prevents foreign matter from being mixed in at normal times and easily releases steam when steam is generated from food.

Further, the steam vent groove portion and the portion wide enough to be picked up at the tip of the flange portion of the lid at the time of opening are both arranged at the positions corresponding to the corner portions of the equivalent container body, whereby the flange of the lid is placed. Since the tip of the portion can also be used as a picking portion when opening the lid, a structure that releases food vapor can be easily provided for a structure that opens the lid of the packaging container, improving usability. Can also be expected.

Further, in the packaging container according to the present invention, the chamfered portion chamfered from the corner portion of the lid toward the corner portion of the side wall portion of the lid corresponds to the boundary with the corner portion of the top surface portion. It is expected that the rigidity of the chamfered portion will be improved by directly connecting the end portion of the chamfered arc corresponding to the boundary between the lid and the corner portion of the side wall portion of the lid. That is, the chamfered arc end curved downward absorbs the stress applied to the entire chamfered portion through the chamfered straight end portion like a cushion, which has the effect of preventing damage to the chamfered portion. You can expect it. Furthermore, even if the chamfered straight end is bent due to stress concentration due to the load, the chamfered arc end receives the stress, so damage to the corner of the side wall of the lid that passes under the chamfered arc end is avoided. You can also expect the effect of doing this.

Further, since the ribs on the side wall of the lid are located on both sides of the chamfered portion and vertically cut from the peripheral edge of the top surface portion, the stress applied to both ends of the straight end of the chamfered portion can be dispersed. The effect of further increasing the rigidity of the part can be expected. Further, even if the chamfered straight end is bent due to stress concentration due to the load, the rib portion of the side wall of the lid receives the stress, so that the effect of avoiding damage to the top surface portion leading to the rib portion of the side wall of the lid can be expected.

Further, the packaging container according to the present invention supports the contents from below and has a base portion that is higher from the center of the bottom to the outside, so that, for example, in the case of flat food, it is closer to the center of the food. You can expect the effect of arranging the outside side high. That is, in a flat food, the 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 collect toward the center, so that the quality of the food can be expected to be maintained.

In addition, since a plurality of base portions are provided intermittently in the circumferential direction of the bottom portion, a gap can be provided between the outside side of the highly arranged food and the bottom portion, so that the food is less likely to become damp. Can also be expected. That is, the water droplets from the food that has flowed to the bottom through the side wall of the container body enter the gap between the outside and the bottom of the food that has risen at the base, and the outside of the food becomes damp. Can be expected to have the effect of preventing food from being maintained in a desired state.

In addition, since the base is provided integrally and at the same height in the center of the bottom, it is possible to serve not only the outside of the food but also the center of the food, so that the whole food can be placed at a high position with respect to the bottom. You can expect the effect of placing it on. That is, the integrated and identically high base provided in the center stably supports the center side of the food at a predetermined height, and the outer base part supports the outer side of the food even higher. 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 side view which shows an example of the container main body of the said packaging container. It is a partially enlarged view which shows an example of the container main body of the said packaging container. It is a perspective view which shows an example of the lid body of the said packaging container. It is a top view which shows an example of the lid body of the said packaging container. It is a bottom view which shows an example of the lid body of the said packaging container. It is a front view which shows an example of the lid body of the said packaging container. It is a right side view which shows an example of the lid body of the said packaging container. It is a partially enlarged view which shows an example of the lid body of the said packaging container. It is a partial enlarged view which shows an example of the container main body which attached the lid body of the said packaging container.

Hereinafter, the details of the packaging container (hereinafter, also referred to as “the present packaging container”) according to the embodiment of the present invention will be described with reference to FIGS. 1 to 13. In these figures, some of the same parts having a plurality of parts are numbered only in one part. In addition, for parts that cannot be confirmed and cannot be seen on the drawings, some parts and leader lines are indicated by broken lines. If the rear view and the left side view are the same or symmetrical with each other, the rear view and the left side view shall be omitted.
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 this may be used. 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.

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

Then, as shown in FIG. 1, the present packaging container has, for example, a main body fitting portion 13 that internally fits with 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 an extended main body flange portion 14 is provided, and the main body fitting portion has a steam vent groove portion 133 extending from the inside of the container main body to the inner peripheral edge of the main body flange portion. The steam vent groove portion may be closed by the lid flange portion 25 of the lid 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 step portion 141 that raises a portion located on the outside, and the main body flange step portion may turn up the tip of the lid flange portion 25 of the lid body 2. ..

Further, the steam vent groove portion 133 is arranged at a position corresponding to a corner portion of the container body 1 having a substantially rectangular shape, and the tip of the lid flange portion 25 of the lid 2 is wide enough to be picked up when the lid is opened. It corresponds to the knob portion 251 and may be located at the corner portion of the container body when the lid is closed.

Further, as shown in FIG. 1, the present packaging container has a substantially rectangular top surface portion 21, a lid side wall portion 22 connected downward from the peripheral edge of the top surface portion, and a corner portion of the top surface portion. The lid 2 is provided with a chamfered portion 23 chamfered toward a corner portion of the side wall portion of the lid, and the chamfered portion is a chamfered straight end 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 the 231 and the corner portion of the side wall portion may be directly connected to each other.

Further, the lid side wall portion 22 may have a lid side wall rib portion 221 that is located on both sides of the chamfered portion 23 and vertically crosses from the peripheral edge of the top surface portion 21.

Further, as shown in FIG. 1, the present packaging container includes a container body 1 having at least a bottom portion 11 on which the contents are placed, and the bottom portion has a base portion 13 for supporting the contents from below. However, the base portion may be higher so as to be located outward from the center of the bottom portion.

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

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

Next, the structure of each part constituting the main packaging container will be described in detail.

As shown in FIGS. 2 to 7, the container main body 1 has a substantially square bottom portion 11 in a plan view on which food is placed, a main body side wall portion 12 rising upward from the peripheral edge of the bottom portion, and the main body side wall portion. It may have a main body fitting portion 13 located at the upper part of the portion and a main body flange portion 14 extending outward from the upper end of the main body fitting portion.
It should be noted that the bottom portion 11 may have each side gently curved outward, each corner portion may be curved, or may have a substantially rectangular shape, a substantially circular shape, or a substantially elliptical shape in a plan view, and is limited. There is no.

The bottom portion 11 has a substantially square and flat mounting portion 111 arranged over a predetermined range from the center, and a mounting portion arranged on the periphery of the mounting portion and having a lower height than the mounting portion. It may have a peripheral portion 112. The mounting peripheral edge portion 112 may correspond to a leg portion that abuts on a predetermined table when the container body 1 is placed on the table. According to this configuration, since the placing portion 111 is arranged at a position higher than the total height of the container body 1, the volume feeling of the food can be expected to be improved, and the soup, oil, and the soup and oil produced from this food can be expected. Alternatively, it can be expected to be used as a water storage area for water vapor (hereinafter, also referred to as "soup, etc.").
Even if the mounting portion 111 further has a base portion 113 that supports the food from below, and a mounting groove portion 114 having a predetermined depth that can store water such as juice from the food adjacent to the base portion 113. good.
The mounting portion 111 may have a substantially rectangular shape, a substantially circular shape, or a substantially elliptical shape in a 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 is raised over a predetermined range from the center of the mounting portion 111, and a plurality of stages that are intermittently raised from the periphery of the stage portion in the circumferential direction of the mounting portion. The rib portion 113b of the above may be included. The mounting groove portion 114 may be arranged in symmetrical directions on all four sides of the stage portion 113a, and is composed of the mounting portion 111 and a plurality of linear grooves substantially parallel to each side of the stage portion. May be good. The plurality of grooves constituting the mounting groove portion 114 pass through the center of the stage portion 113a and are bordered by the mounting groove gap portions 114a at predetermined intervals located on a straight line orthogonal to each side of the stage portion. , May be arranged on both sides of this mounting groove gap. According to this structure, the mounting groove gap 114a serves as a marker for how to serve food with respect to the mounting portion 111. For example, different types of food can be arranged with respect to the mounting portion 111. You may arrange it on the front side and the back side as a boundary.
The shape, dimensions, and position of the base portion 113, the mounting groove portion 114, and the mounting groove gap portion 114a are not limited. The placement groove portion 114 may exhibit a function of storing water such as food juice, a function of increasing the rigidity of the placement portion 111, and a non-slip function of the placed food.

The stage portion 113a may be arranged in a flat shape having substantially the same shape as the mounting portion 111 (a substantially square shape in a plan view) and in the same direction. The stage portion 113a may be provided with a linear stage groove portion 113ax on both diagonal lines. According to this structure, the stage groove 113ax serves as a marker for how to serve food with respect to the mounting portion 111. For example, foods of different types with respect to the mounting portion 111 are placed diagonally with the stage groove as a boundary. You may arrange them separately.
The stage portion 113a may have a substantially rectangular shape, a substantially circular shape, or a substantially elliptical shape in a plan view, and has a flat slope shape or a curved shape that rises outward in an end face view on a diagonally cut surface. But there is no limit. The height difference between the stage portion 113a and the mounting portion 111 may be, for example, 2 to 7 mm, preferably 3 to 5 mm, and is not limited. The shape, dimensions, and position of the stage groove 113ax are not limited. The stage groove 113ax may exhibit a function of storing water such as food juice, a function of increasing the rigidity of the stage 113a, and a function of removing steam generated from under the placed food.

The rib portion 113b is arranged diagonally on both sides of the mounting portion 111 (on an extension 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. May be good. The rib portion 113b may include a low rib portion 113bx having substantially the same height as the stage portion 113a, and a high rib portion 113by located outside the low rib portion and 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.
The rib portion 113b may include only the high rib portion 113by. The rib portion 113b may be a rod shape having a substantially straight line or a substantially curved line in a plan view, an end face arc shape on the diagonal cut surface of the stage portion 113a, or a flat slope shape or a curved shape which rises outward. Well, there are no restrictions.

The side wall portion 12 of the main body may be expanded diagonally upward from the outer peripheral edge of the mounting peripheral edge portion 112. A main body fitting portion 13 having a substantially L-shaped end face may be provided on the upper portion of the main body side wall portion 12 on the cut surface in the vertical direction.
The main body fitting portion 13 is erected from the main body fitting flat portion 131 extending outward from the peripheral edge of a predetermined height located above the main body fitting flat portion 12 and the peripheral edge of the main body fitting flat portion. It may be composed of a main body fitting standing portion 132. The main body fitting portion 13 may be further provided with a steam vent groove portion 133 having a substantially L-shaped end face on the cut surface in the vertical direction.
The height of the side wall portion 12 of the main body may depend on the height and amount of the food to be served, and may be, for example, a height suitable for flat food (for example, okonomiyaki). The main body fitting flat portion 131 may be horizontal or inclined. The main body fitting upright portion 132 may have a substantially S-shape with the lower side bulging outward and the upper side sloping inward.

The steam vent groove portion 133 is formed from the inside of the container main body 1 to the inner peripheral edge of the main body flange portion 14, is provided at each of the corner portions of the main body fitting portion 13, and is provided in each of the corner portions of the main body fitting portion 13 in a direction orthogonal to the main body fitting flat portion 131. The first steam vent passage 133a (inward and outward directions with respect to the container body 1) and curvedly recessed, and the second steam venting passage 133b perpendicular to the main body fitting standing portion 132 and recessed in a curved shape. And may be configured in communication with each other. One end of the first steam vent passage 133a may communicate with the inside of the container main body 1, and one end of the second steam vent passage 133b may reach the inner peripheral edge of the main body flange portion 14. According to this configuration, each of the steam vent groove portions 133 can be expected to have the effect of discharging steam from food that tends to accumulate in the corner portions of the main body fitting portion 13. Further, the steam generated due to the temperature rise inside the container body 1 due to the closed state of the lid body 2 is discharged to the outside of the container body through the first steam vent passage 133a and the second steam vent passage 133b. You can expect the effect of making it.
The steam vent groove portion 133 may be provided only at any of the corner portions of the main body fitting portion 13 or at the opposite corner portions. The shape and size of the first steam vent passage 133a and the second steam vent passage 133b are not limited, and the width of each steam vent passage is 1 to 5 mm, preferably 1.5 to 3.5 mm, more preferably. May be 2 to 3 mm, and the depth of each steam vent passage may be 0.1 to 5 mm, preferably 0.5 to 3 mm, and 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 peripheral edge of the upper end of the main body fitting standing portion 132 and raises the height outside from a predetermined position. As a boundary, the inside may be substantially flat and the outside may be a three-dimensional three-dimensional shape. The lower end of the main body flange step portion 141 may have substantially the same shape as the peripheral edge of the upper end of the main body fitting standing portion 132. According to this configuration, even if the outside of the main body flange portion 14 is raised up and down, the flange portion of the lid 2 may abut against the inside of the main body flange portion 14 to form a closed state. Further, if the tip of the flange portion of the lid partially protrudes to the outside of the main body flange portion 14 via the main body flange step portion 141, this tip may be used as a grip portion when the lid 2 is opened.
The outside of the main body flange step portion 141 may be inclined so that the tip of the flange portion of the lid to be abutted is turned up. The main body flange step portion 141 may have a partial height difference. For example, the portion corresponding to the four corner portions of the container main body 2 is low, the both side portions of the four corner portions are high, and the space between the four corner portions is high. The portion may be low.

Next, the detailed structure of the lid 2 will be described with reference to FIGS. 7 to 14.

The lid 2 has a top surface portion 21 that is flat and has curved corner portions, a lid side wall portion 22 that is connected downward from the peripheral edge of the top surface portion and has bent corner portions, and a corner portion of the top surface portion. The chamfered portion 23 that is chamfered toward the corner portion of the side wall portion of the lid body, and the lid body that extends outward from the peripheral edge of the lower end of the side wall portion of the lid body and internally fits with the fitting portion 13 of the main body. It may have a fitting portion 24 and a lid flange portion 25 extending outward from the peripheral edge of the upper end of the lid fitting portion.
The top surface portion 21 may have each side gently curved outward, or may have a substantially rectangular shape, a substantially circular shape, or a substantially elliptical shape in a plan view, and is not limited. Each wall portion of the lid side wall portion 22 may gently bulge outward. The chamfered surface of the chamfered portion 23 may be flat or have a shape that gently bulges outward. The lid fitting portion 24 may have the same shape as the main body fitting portion 13 in terms of the cut surface in the vertical direction in terms of end face view.

The chamfered portion 23 is a linear 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. It may have 232 and. Both ends of the chamfered arc end portion 232 may reach both ends of the chamfered straight line 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 a store, the chamfered straight end portion 231 not only deforms the corner portion of the top surface portion 21 but also faces the surface. Since the chamfered arc end portion 232 supports both ends of the chamfered straight line end portion from below, deformation of the chamfered straight line end portion may be prevented.
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 °, and more preferably 43 to 47 °. The radius of curvature of the chamfered arc end portion 232 may depend on 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 each side of the top surface portion 21 located on both sides thereof.

The lid side wall portion 22 has the lid from the upper end of the lid side wall portion corresponding to the peripheral edge of the top surface portion 21 located at a predetermined distance from both sides of the chamfering portion 23 to the lower end formed in a stepped shape. It may have a linear lid side wall rib portion 221 that vertically crosses the corner portion of the body side wall portion at an angle toward the center line that bisects the body side wall portion in the vertical direction. The lid side wall rib portion 221 may be a stepped portion formed to arrange the corner portion of the lid side wall portion 22 so as to be 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 2, both lid side wall rib portions 221 support the corner portions of the lid side wall portion 22 from both sides of the chamfering portion 23. Therefore, deformation of the chamfered portion and the side wall portion of the lid may be prevented.
The rib portion 221 on the side wall of the lid may be a linear protrusion protruding at a predetermined height from the boundary between the corner portion and the wall portion of the side wall portion 22 of the lid. The distance between both sides of the chamfered portion 23 and the upper end of the lid side wall rib portion 221 is for avoiding a decrease in rigidity due to point contact, but is not limited thereto. The direction of inclination of the lid side wall rib portion 221 is to avoid deterioration of visibility of the container body 1 from the lid side wall portion 22 and to prevent the diffusion of water droplets adhering to the inside of the lid body 2. There is no limitation.

The lid flange portion 25 may have a knob portion 251 that is partially widened from a portion corresponding to the four corner portions of the lid body 2 and is picked when the lid body 2 is opened. The knob portion 251 warps through the main body flange step portion 141 when the lid 2 is closed, abuts on the main body flange portion 14 outside the main body flange step portion, and is inclined, and the tip portion is outside the main body flange portion. It may protrude toward you. 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 step portion 141. According to this configuration, when the lid 2 is closed, the lid flange portion 25 comes into contact with 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 portion 133 is closed and the upper end is closed. The grip portion 251 may be warped by the main body flange step portion 141 to move away from the inner peripheral edge of the main body flange portion.

As described above, the packaging container in the present embodiment is provided in the main body fitting portion 13 of the container main body 1 that internally fits with the lid fitting portion 24 of the lid body 2, and the main body flange portion is provided from the inside of the container main body. The steam vent groove portion 133 leading to the inner peripheral edge of the 14 is closed by the flange portion of the lid that overlaps with the main body flange portion at the time of closing, thereby preventing foreign matter from entering the inside of the container main body from the outside in normal times. When steam is generated from the food, the steam can be released from the inside of the container body to the outside through the steam vent groove, so that the effect of preventing the explosion of the food and the rupture of the lid can be expected. Further, when the lid is closed, the steam vent groove portion 133 is hidden by the lid fitting portion 24 of the lid body 2 and is inconspicuous, so that the possibility of impairing the design of the entire packaging container is extremely low.

Further, since the main body flange step portion 141 of the main body flange portion 14 turns up the tip of the lid flange portion 25 of the lid 2 when the lid is closed, the tip 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 the effect of easily releasing the steam from the steam vent groove portion 133 to the outside when steam is generated from the food can be expected. That is, it can be expected to have a check valve effect that prevents foreign matter from being mixed in at normal times and easily releases steam when steam is generated from food.

Further, the steam vent groove portion 133 and the grip portion 251 which is wide enough to be picked at the time of opening the lid at the tip of the lid flange portion 25 of the lid 2 are located at positions corresponding to the same corner portion of the container body 1. By arranging the lid, the tip of the lid flange portion of the lid can also be used as a gripping portion at the time of opening, so that food vapor is released to the structure for opening the lid of the packaging container. It is possible to easily install a structure to be used, and improvement in usability can be expected.

Further, in the packaging container of the present embodiment, the chamfered portion 23 chamfered from the corner portion of the lid 2 toward the corner portion of the lid side wall portion 22 corresponds to the boundary with the corner portion of the top surface portion. The rigidity of the chamfered portion 23 can be expected to be improved by directly connecting the chamfered straight end portion 231 and the chamfered arc end portion 232 corresponding to the boundary between the corner portions of the side wall portion of the lid. That is, the chamfered arc end portion 232 curved downward absorbs the stress applied to the entire chamfered portion 23 via the chamfered straight end portion 231 like a cushion, so that the chamfered portion is damaged. Expected to have a preventive effect. Further, even if the chamfered straight end 231 bends due to stress concentration due to the load, the chamfered arc end 232 receives the stress, so that the corner portion of the lid side wall 22 passing under the chamfered arc end is received. The effect of avoiding damage can also be expected.

Further, since the lid side wall rib portions 221 are located on both sides of the chamfered portion 23 and vertically cut from the peripheral edge 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. Further, even if the chamfered straight end portion 231 bends due to stress concentration due to the load, the lid side wall rib portion 221 receives the stress, so that there is also an effect of avoiding damage to the top surface portion 21 passing through the lid side wall rib portion. You can expect it.

Further, the packaging container in the present embodiment supports the contents from below and has a base portion 113 (including a stage portion 113a and a rib portion 113b) which is higher toward the outside from the center of the bottom portion 11. For example, in the case of a flat food, the effect of serving the food on the outer side higher than the center side can be expected. That is, in a flat food, the 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 collect toward the center, so that the quality of the food can be expected to be maintained.

Further, since a plurality of base portions 113 (rib portions 113b) are provided intermittently in the circumferential direction of the bottom portion 11, a gap can be provided between the outer side of the highly arranged food and the bottom portion. Therefore, it can be expected that the food will not become damp. That is, the water droplets due to the steam from the food flowing through the main body side wall portion 12 of the container main body 1 to the bottom portion 11 enter the gap between the outer side and the bottom portion of the food raised at the base portion 113 (rib portion 113b). Therefore, it is possible to prevent the food from becoming damp on the outside and to expect the effect of maintaining the food in a desired state.

Further, since the base portion 113 (stage portion 113a) is provided integrally and at the same height in the center of the bottom portion, it is possible to serve not only the outside side of the food but also the center side, so that the whole food can be served. The effect of placing it in a high position with respect to the bottom 11 can be expected. That is, the integrated and identically high base portion 113 (stage portion 113a) provided in the center stably supports the food toward the center at a predetermined height, and the base portion (rib portion 113b) toward the outside is stably supported. ) Is even higher and supports the outside of the food, so the effect of amplifying the volume of the food can be expected.

The container body 1 and the lid 2 according to the present embodiment are formed by thermoforming a synthetic resin sheet by sheet molding such as vacuum forming, vacuum forming, vacuum forming, double-sided vacuum forming, and thermoforming. You may. 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, and a single-layer or multi-layer sheet may be used. As the resin, for example, it is preferable to use a foamed resin 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.

1 Container body 11 Bottom 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 gap part 12 Main body side wall part 13 Fitting part 131 Main body fitting flat part 132 Main body fitting standing part 133 Steam venting groove part 133a First steam venting passage 133b Second steam venting passage 14 Main body flange part 141 Main body flange step part 2 Lid body 21 Top surface part 22 Closure side wall part 221 Closure side wall rib part 23 Cleaved part 231 Cleaved straight end part 232 Cleaved arc end part 24 Clad body fitting part 25 Clad body flange part 251 Knob part

Claims (3)

It consists of a container body and a lid that closes the container body by an internal fitting type.
The container main body includes a main body fitting portion that internally fits with a lid fitting portion provided on the lid body, and a main body flange portion that includes a horizontal portion extending outward from the upper end of the main body fitting portion. Have at least
The lid has a lid flange portion including a portion that overlaps at least on the horizontal portion of the main body flange portion when the lid is closed .
The main body fitting portion includes a main body fitting standing portion extending downward from the inner peripheral end of the main body flange portion and a main body fitting flat portion extending inward from the lower end of the main body fitting standing portion. It has a portion and a steam venting groove portion that forms a passage for steam venting extending from the inside of the container body to the outside .
At least the upper end of the steam vent groove portion is formed so as to be located in the main body fitting upright portion of the main body fitting portion, and the lid flange portion of the lid that closes the container main body by the internal fitting type . A packaging container characterized in that it is closed inside the horizontal portion of the main body flange portion. The main body flange portion has a stepped portion that raises a portion located on the outside.
The packaging container according to claim 1, wherein the step portion has the tip of the lid flange portion turned up. The steam vent groove portion is arranged at a position corresponding to a corner portion of the container body having a substantially rectangular shape.
The packaging container according to claim 2, wherein the tip of the lid flange portion corresponds to a portion wide enough to be picked when the lid is opened, and is located at a corner portion of the container body when the lid is closed. ..

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