JP6570602B2 - Food packaging containers and lidded containers - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a food packaging container and a lidded container, and more particularly to a container suitable for an application that contains food containing a large amount of oil.

  In recent years, the population living alone has increased. Making fried foods for one person is time consuming and uneconomical. For this reason, there is an increasing demand for buying side dishes at convenience stores and supermarkets. Among such side dishes, side dishes such as tonkatsu and tempura are cooked in the backyard of each store, and the prepared side dishes are provided in containers. On the other hand, because demand for prepared foods is increasing and it is difficult to secure human resources to perform these operations, products that are cooked outside the store and packaged in containers are transported to the store, delivered, and sold for display. Increasingly.

  When transporting, carrying in, or displaying such foods, especially in the case of sugary side dishes such as tonkatsu and tempura, these side dishes may slip in the container and be misaligned. When taking it home and heating it by heating in a range, the oil may not run out and the sugar beet may become sticky, and there is an increasing demand for improving these.

  The present applicant has already proposed a container for food packaging described in Patent Document 1 below. Although this container is suitable for fresh foods, if it contains foods with a high oil content such as tonkatsu and tempura, the foods become slippery during transportation and display operations.

  Further, in Patent Document 2 below, a plurality of inclined grooves descending to the front side and a plurality of horizontal trapezoidal ribs positioned between the inclined grooves are provided at the bottom, and fried foods or the like are provided at the top of the plurality of trapezoidal ribs. A container for supporting the is described. However, food is slippery during transportation and display work. In addition, oil draining is not sufficient, oil tends to remain on the contact surface between the top of the trapezoidal rib and the food, and the portion of the food that is in contact with the top of the trapezoidal rib is likely to be sticky.

JP 2010-184742 A JP 2003-192074 A

  Therefore, the present invention has been made in view of the above-mentioned conventional problems, and it is an object to provide a food packaging container and a lidded container that can suppress the sliding of food in the container during transportation and display work and can suppress the stickiness of food. And

The present invention has been made to solve the above problems, and a food packaging container according to the present invention includes a bottom surface portion, a side surface portion extending upward from a peripheral edge portion of the bottom surface portion, and an upper end portion of the side surface portion. A food packaging container provided with a flange portion extending laterally, wherein an upper surface of the bottom surface portion has a circumferential groove that circulates a peripheral edge portion of the upper surface of the bottom surface portion, and a plateau-shaped food surrounded by the circumferential groove. A mounting surface is formed, and at the peripheral portion of the food mounting surface, a peripheral ridge is projected upward so as to circulate around the peripheral portion, and the food mounting is surrounded by the peripheral ridge In the inner region of the surface, a plurality of inner ridges extending in a predetermined direction are projected upward, and a plurality of irregularities are formed on the top of the peripheral ridge and the top of the inner ridge, respectively . and inner ridges longitudinally are repeatedly formed alternately, the recess of the irregularities, the top and inner ridges of the peripheral ridges Parts and across the width direction, projecting amount of the inner ridge portion is gradually decreased toward the periphery from the center of the food placing surface, the height of the inner ridge food placing central surface It is characterized by being gradually lowered from the peripheral part to the peripheral part.

  The food contained in the food packaging container having the structure is placed on the food placing surface surrounded by the circumferential groove, and the top of the peripheral ridge or the inner ridge protruding from the food placing surface. It will be supported on the top. Therefore, the contact area between the food placing surface and the food can be reduced. In particular, the amount of protrusion of the inner ridge gradually decreases from the central portion of the food placement surface to the peripheral portion, and the height of the inner ridge portion gradually decreases from the central portion of the food placement surface to the peripheral portion. Therefore, the food mainly comes into contact with a portion of the total length of the inner ridge portion that is close to the center portion of the food placement surface and has a high height, and the contact area can be reduced. Furthermore, since a plurality of irregularities are formed on the top of the peripheral ridge and the top of the inner ridge, respectively, the food is mainly on the convex portion on the top of the peripheral ridge and the top of the inner ridge. It comes into contact with the convex portion, and the contact area can be further reduced. And in the case of foodstuffs with much oil content, the oil contained in food flows from the convex part of the top part of a peripheral ridge part to a recessed part, and flows from the convex part of the top part of an inner side ridge part to a recessed part. Moreover, the oil adhering to the top part of the inner ridge part flows from a high part of the inner ridge part to a low part. And oil flows from the top part of the peripheral ridge part or the top part of the inner ridge part to the food placing surface or the circumferential groove. In particular, in the case of a range-compatible container, the food can be heated by placing it in a microwave oven while containing the food. The oil of the food can be smoothly drained by the unevenness of the top of the portion, and the stickiness of the food can be suppressed. Further, when a container containing food is transported or displayed, the misalignment of the food is suppressed by the unevenness at the top of the peripheral protrusion and the unevenness at the top of the inner protrusion.

  In particular, it is preferable that a predetermined portion of the entire circumference of the peripheral ridge is formed with a notch so as to divide the peripheral ridge, and oil from food passes through the notch and is loaded with the food. It flows down from the mounting surface to the circular groove.

  Moreover, it is preferable that the food placement surface is inclined so as to decrease in height from the central portion to the peripheral portion, and oil discharged from the food flows from the central portion of the food placement surface toward the peripheral portion.

  A container with a lid according to the present invention includes a container as described above and a lid fitted to the container.

  As described above, a peripheral ridge is formed on the peripheral portion of the food placing surface, and a plurality of inner ridges having a predetermined shape are formed in the inner region, and the top and inner ridges of the peripheral ridge are formed. Since a plurality of irregularities are formed on the top of each of the foods, when food containing a large amount of oil is contained, the oil draining is good and the stickiness of the food can be suppressed. In addition, it is possible to suppress the misalignment of the food during transportation and display work, and to prevent the appearance from deteriorating due to the misalignment of the food.

The perspective view which shows the container for food packaging in one Embodiment of this invention. The top view of the container. The front view of the container. AA sectional drawing of FIG. BB sectional drawing of FIG. (A) And (b) is a principal part enlarged view of the container.

  Hereinafter, a food packaging container according to an embodiment of the present invention will be described with reference to FIGS. The container in the present embodiment is a tray-shaped container having a height dimension smaller than a vertical dimension and a horizontal dimension. The food to be contained is not particularly limited, but is suitable for foods with a high oil content, and particularly suitable for deep-fried foods such as deep-fried food, tempura, fried food, cutlet, croquette, french fries, donuts and fried bread.

  The shape of the container in plan view may be various shapes such as a circle, an ellipse, and a rectangle. In the present embodiment, a substantially rectangular shape in plan view as shown in FIG. 2, specifically, a horizontally long rectangular container will be described as an example. The longitudinal direction of the container is the width direction and the container short side direction, and the horizontal direction of the container is the longitudinal direction and the container long side direction.

  The container includes a bottom surface portion 1, a side surface portion 2 that rises upward from the peripheral edge portion of the bottom surface portion 1, and a flange portion 3 that extends outward from the upper end portion of the side surface portion 2. The bottom surface portion 1 has a substantially rectangular shape in plan view corresponding to the shape of the container in plan view. Note that the four corners of the bottom surface portion 1 may be chamfered in an arc shape. At the center of the upper surface of the bottom surface portion 1, a food placement surface 5 is formed that is raised one step higher. The food placing surface 5 has a rectangular shape in plan view, and a circumferential groove 6 having a predetermined width is provided around the food placing surface 5. The circumferential groove 6 is located between the food placing surface 5 and the side surface portion 2. The upper surface of the bottom surface portion 1 is partitioned into an inner region having a rectangular shape in plan view and an outer region having a predetermined width that surrounds the outer region, and the food placing surface 5 constitutes the inner region, and the circulation groove 6 Constitutes the outer region. A predetermined portion of the lower surface of the circumferential groove 6 serves as a leg portion 7 when the container is placed on a table or the like. The leg portion 7 may be formed only at the four corners, for example, or may be formed continuously over the entire periphery, but is formed only at the four corners in the present embodiment.

  The food placing surface 5 corresponds to the shape of the container in plan view and has a horizontally long rectangular shape, and its vertical dimension is shorter than the horizontal dimension. The food placing surface 5 occupies the main portion of the upper surface of the bottom surface portion 1. Although the food placing surface 5 can be said to be substantially flat as a whole, in detail, the center portion has a shape that rises slightly higher than the peripheral portion. That is, the food placing surface 5 has the highest central portion and is inclined downward so that the height gradually decreases from the central portion to the peripheral portion. More specifically, the food placing surface 5 is high at the center in the container long side direction and low at both ends in the container long side direction. Moreover, the food placement surface 5 is high at the center in the container short side direction and is low at both ends in the container short side direction. The height difference between the central portion and the peripheral portion of the food placing surface 5 is, for example, about 1 mm, but may be about several millimeters. In addition, the height of the food placing surface 5 is lower than the height of the upper end portion of the flange portion 3.

<Rim ridge 10a, 10b>
Peripheral protrusions 10a and 10b are provided on the periphery of the food placing surface 5 so as to protrude upward. The peripheral ridges 10 a and 10 b extend in a long line shape along the peripheral portion of the food placing surface 5, and circulate around the peripheral portion so as to border the peripheral portion of the food placing surface 5. In the present embodiment, since the food placing surface 5 has a horizontally long rectangular shape in plan view, the peripheral protrusions 10 a and 10 b are formed on a pair of long sides of the peripheral portion of the food placing surface 5. It is comprised from the peripheral ridge part 10a by the side of a long side, and the pair of peripheral ridge part 10b by the side of a short side formed in a pair of short side part among the peripheral parts of the food mounting surface 5.

  Although the protrusion amount of the peripheral protrusions 10a and 10b with respect to the food placing surface 5 may be various, it is, for example, about 1 to several millimeters, and the height between the central portion and the peripheral portion of the food placing surface 5 described above. It is preferred that it be greater than the difference. Although the width | variety of the peripheral ridge part 10a, 10b is also arbitrary, it is about 1 to several millimeters in the top part, for example. The cross-sectional shape of the peripheral protrusions 10a and 10b is preferably a shape that gradually becomes narrower toward the upper side, and is preferably a trapezoidal shape in cross-section. The heights of the tops of the peripheral ridges 10a and 10b may be substantially constant over the entire circumference, or may vary along the circumferential direction.

<Notches 11a and 11b>
Cutout portions 11a and 11b are formed at predetermined locations in the entire circumference of the peripheral ridge portions 10a and 10b so as to divide the peripheral ridge portions 10a and 10b. The notches 11a and 11b are formed at the tops of the peripheral ridges 10a and 10b, and have a shape that opens upward, and are formed over the entire width from the inner edge to the outer edge of the peripheral ridges 10a and 10b. Has been. It is preferable to form the notches 11a and 11b in each of the pair of long side rim protrusions 10a and the pair of short side rim protrusions 10b. The bottoms of the notches 11a and 11b are preferably substantially flush with the food placing surface 5.

  The size, length, number, and arrangement of the notches 11a and 11b are arbitrary, but in the present embodiment, the pair of short side edge protuberances 10b have one notch 11b at the center. A plurality of notches 10a are formed in the pair of long-side peripheral ridges 10a at intervals in the longitudinal direction of the peripheral ridges 10a. More specifically, a relatively large cutout portion 11b is formed at the center of the pair of short-side peripheral ridges 10b, and the pair of long-side peripheral ridges 10a includes an inner ridge 20 described later. Relatively small notches 11a are formed at positions between them.

<Inner ridge 20>
On the inner region of the food placing surface 5, an inner ridge portion 20 is provided so as to protrude upward. The inner area of the food placing surface 5 is an area surrounded by the peripheral ridges 10a and 10b and is an area inside the peripheral ridges 10a and 10b. The inner region of the food placing surface 5 occupies most of the food placing surface 5. The inner ridge portion 20 extends in a long line shape along a predetermined direction. The direction in which the inner ridge 20 extends is arbitrary, but may be the container short side direction or the container long side direction, and is inclined at an inclination angle of 45 degrees or less with respect to the container short side direction or the container long side direction. It may be. Further, the inner ridge portion 20 may extend in a straight line over the entire length thereof, or may be curved or bent.

  In the present embodiment, as shown in FIG. 2, the inner ridge portion 20 extends as a whole along the container short side direction, and a plurality of inner ridges 20 are formed at intervals in the container long side direction. It is preferable that the inner ridge portion 20 reaches the peripheral ridge portion 10a on the long side. That is, the inner ridge portion 20 is preferably formed from one long side peripheral ridge portion 10a to the other long side peripheral ridge portion 10a. However, a predetermined gap may be provided between the end of the inner ridge 20 and the peripheral ridge 10a on the long side. More specifically, the inner ridge portion 20 is inclined at a predetermined angle with respect to the container short side direction in plan view, is bent at the center portion thereof, and the inclination direction is reversed at the center portion, as a whole. It is formed in a square shape. The plurality of inner ridges 20 may all be bent in the same direction, but when opened on one end side in the container long side direction and opened on the other end side in the container long side direction in plan view May be combined as appropriate. Between the end portions of the adjacent inner ridge portions 20, the above-described cutout portions 11 a on the long side are respectively positioned.

  The height of the top portion of each inner ridge portion 20 gradually decreases from the center portion to the peripheral portion of the food placement surface 5. That is, the height of the top portion of the inner ridge portion 20 is not constant over the entire length, and gradually decreases from the central portion to the peripheral portion of the food placing surface 5 along the longitudinal direction of the inner ridge portion 20. ing. Of the total length of the inner ridge portion 20, the height of the top is highest in the portion near the center of the food placement surface 5, and the height of the top gradually decreases as the distance from the center of the food placement surface 5 increases. As a result, the height of the top is the lowest in the portion near the peripheral edge of the food placing surface 5. The height difference between the height of the top of the inner ridge 20 at the center of the food placement surface 5 and the height of the top of the inner ridge 20 at the peripheral edge of the food placement surface 5 is the food that is the base surface. It is larger than the height difference between the central portion and the peripheral portion of the mounting surface 5. That is, the top portion of the inner ridge portion 20 is inclined downward from the center of the food placing surface 5 toward the peripheral edge at an inclination angle larger than the inclination angle of the food placing surface 5. In addition, the height of the top part of the inner side protrusion part 20 in the peripheral part of the food mounting surface 5 may be lower than the height of the top part of the peripheral protrusion parts 10a and 10b, and may be the same. The height of the top portion of the inner ridge portion 20 in the central portion of the food placing surface 5 may be the same as the height of the top portions of the peripheral ridge portions 10a and 10b, or the top portions of the peripheral ridge portions 10a and 10b. It may be higher than the height.

  In the present embodiment, since the inner ridge portion 20 extends in the container short side direction as a whole, the height of the top portion is the highest in the central portion in the container short side direction among the total length of the inner ridge portion 20, From there, the height of the top gradually decreases toward both ends in the container short side direction, and the height of the top becomes the lowest at both ends in the container short side direction. In other words, the height of the top portion of the inner ridge portion 20 is higher as it is farther from the peripheral ridge portion 10a on the long side, and is lower as it is closer to the peripheral ridge portion 10a on the long side. In each of the plurality of inner ridge portions 20, the height of the top portion is gradually lowered from the center portion to both end portions in the container short side direction. In the present embodiment, the plurality of inner ridge portions 20 are arranged at intervals in the container long side direction, and the food placing surface 5 is formed high in the central portion and low in the peripheral portion. Therefore, when comparing the heights of the top portions of the plurality of inner ridge portions 20 at the center portion of the food placing surface 5, the top portion of the inner ridge portion 20 located at the center in the container long side direction is relatively highest. The tops of the inner ridges 20 located at both ends in the container long side direction are relatively lowest.

  The protrusion amount of the inner ridge portion 20 with respect to the food placing surface 5 is not constant over the entire length of the inner ridge portion 20, and the central portion of the food placing surface 5 along the longitudinal direction of the inner ridge portion 20. It gradually decreases from the edge to the periphery. That is, the protrusion amount is the largest in the portion near the center portion of the food placing surface 5 in the entire length of the inner protrusion portion 20, and the protrusion amount gradually decreases as the distance from the center portion of the food placing surface 5 increases. As a matter of course, the amount of protrusion is the smallest in the portion near the peripheral edge of the food placing surface 5. In this embodiment, since the inner ridge portion 20 extends in the container short side direction as a whole, the protrusion amount is the largest in the central portion of the inner ridge portion 20 in the container short side direction, and from there The amount of protrusion gradually decreases toward both ends in the container short side direction, and the amount of protrusion is the smallest at both ends in the container short side direction. In each of the plurality of inner ridge portions 20, the amount of protrusion gradually decreases from the center portion in the container short side direction to both end portions.

  The protruding amount of the inner ridge portion 20 with respect to the food placing surface 5 is, for example, about 1 to several millimeters, and is preferably larger than the height difference between the central portion and the peripheral portion of the food placing surface 5. Although the width | variety of the inner side protrusion part 20 is also arbitrary, it is about 1 to several millimeters in the top part, for example. The cross-sectional shape of the inner ridge portion 20 is preferably a shape that gradually becomes narrower toward the upper side, and preferably has a trapezoidal cross-sectional shape. It is preferable that the protruding amount of the inner protruding portion 20 at the central portion of the food placing surface 5 is substantially the same as the protruding amounts of the peripheral protruding portions 10a and 10b.

  The inner ridge portion 20 may be continuous over its entire length or may be divided at various places. That is, a notch 21 may be formed at a predetermined position in the entire length of the inner ridge 20 so as to divide or divide the inner ridge 20. The notch portion 21 is formed at the top of the inner ridge portion 20 and has a shape opened to the upper side, and is formed over the entire width from the inner edge to the outer edge of the peripheral ridge portions 10a and 10b. It is preferable that the bottom of the notch 21 reaches the food placement surface 5. The cutout portion 21 may be formed at only one place in the entire length of the inner ridge portion 20, or may be formed at two or more places. In the present embodiment, there are an inner ridge portion 20 in which one notch portion 21 is formed at the central portion, and an inner ridge portion 20 in which the notch portions 21 are formed at two locations at intervals.

<Unevenness on top>
A plurality of irregularities are formed on the tops of the peripheral ridges 10a and 10b and the top of the inner ridge 20 respectively. As shown in FIGS. 6 (a) and 6 (b), the concavo-convex portion is composed of a convex portion 30 projecting relatively upward and a concave portion 31 recessed relatively downward. The upward protrusion amount of the convex portion 30 and the downward recess amount of the concave portion 31 are smaller than the protrusion amounts of the peripheral protrusion portions 10 a and 10 b and the inner protrusion portion 20. The height difference between the convex portion 30 and the concave portion 31 is, for example, 1 mm or less, and is preferably less than half of the protruding amount of the peripheral ridge portions 10a, 10b, for example, 0.3-1 mm.

  The irregularities are preferably formed continuously in the longitudinal direction of the peripheral ridges 10a, 10b and the inner ridges 20, and the protrusions 30 and the recesses 31 are formed on the peripheral ridges 10a, 10b and the inner ridges 20. It is preferable that they are alternately and repeatedly formed along the longitudinal direction. The irregularities are preferably formed over the entire length of the peripheral ridges 10 a and 10 b and the inner ridge 20. The recess 31 crosses the tops of the peripheral ridges 10a and 10b and the inner ridge 20 in the width direction.

<Side 2 and Flange 3>
A protruding portion 8 that locally protrudes inward may be provided at a predetermined position in the entire circumference of the inner surface of the side surface portion 2. Various reinforcing ribs may be formed on the bottom surface 1 and the side surface 2. The flange portion 3 is formed over the entire circumference. On the outer edge portion of the flange portion 3, an edge portion 4 that extends outward, for example, horizontally or slightly downward may be formed over the entire circumference. The edging portion 4 is a portion that becomes the outermost peripheral edge of the container. The flange portion 3 can be effectively reinforced by providing the edge portion 4 over the entire circumference at the outer edge portion of the flange portion 3. The width of the edging portion 4 may be as thin as, for example, about 0.1 mm to 2 mm. The upper and lower surfaces of the edging portion 4 may be subjected to fine unevenness and embossing when the container is thermoformed to form an uneven shape, providing a further reinforcing effect and preventing finger cuts. it can. The unevenness of the upper surface and the lower surface of the edging portion 4 may be a shape extending in the inner and outer directions of the container, may be inclined with respect to the inner and outer directions, and may be various knurled eyes.

  A lid (not shown) is attached to such a container. The lid is fitted into the container. The configuration of fitting may be various, and may be an internal fitting configuration in which the lid fits inside the container, or an external fitting configuration in which the lid fits outside the container. Alternatively, a configuration in which the lid is fitted to both the inside and the outside of the container may be employed. Similar to the container, various reinforcing ribs may be formed on the lid body, and an edge portion may be formed on the flange portion, and irregularities may be formed on the upper surface and the lower surface of the edge portion. The lid portion may be provided with a ventilation portion for releasing steam generated from food inside the container to a certain extent when the microwave oven is heated. A vent may be provided in the container as well. When the containers with lids are stacked, in order to prevent horizontal displacement between the containers with lids, the leg portions 7 of the containers are formed so as to be able to engage with the outer peripheral portion of the top surface of the lid body. Is preferred.

<Material>
The container and the lid are made of a synthetic resin sheet and are sheet molded products formed by sheet molding. Sheet molding includes, for example, vacuum forming, pressure forming, vacuum pressure forming, double-sided vacuum forming, hot plate forming and the like, and in any case, it is formed by thermoforming a synthetic resin sheet. Therefore, in principle, the outer surface and the inner surface of the container or the lid body have opposite shapes.

  Here, as the synthetic resin sheet, for example, polyethylene terephthalate, polystyrene, polyolefin such as polypropylene and polyethylene, etc., among these, a synthetic resin sheet having range heat resistance is preferable, and these sheet materials are filled with an inorganic substance. Sheets, foamed sheets obtained by foaming these sheet materials, and stretched sheets obtained by stretching these sheets can be preferably used. In particular, the container is filled with an inorganic substance in a heat-resistant styrene-based resin sheet using a heat-resistant styrene-based resin having excellent heat resistance as polystyrene, or a foamed sheet obtained by foaming this, or polypropylene having excellent heat resistance. It is preferable to use a heat-resistant sheet obtained by stretching a sheet of foamed or foamed sheet, polyethylene terephthalate / polystyrene / polypropylene / polyethylene, etc. to improve heat resistance. A container using a heat-resistant foam material for the container body is suitable because it is not hot even if it is held with a bare hand during heating in a microwave oven and is excellent in heat retention. Moreover, it is preferable to use the sheet | seat excellent in transparency among the sheet | seats of an above-mentioned heat resistant material for a cover body, and the foodstuff accommodated can be visually recognized favorably.

  Food is stored in the container configured as described above, and the food is placed on the food placing surface 5. Since the peripheral protrusions 10a and 10b and the inner protrusion 20 are formed on the food placing surface 5, the food is supported by the top of the peripheral protrusions 10a and 10b and the top of the inner protrusion 20. In particular, since the height of the top portion of the inner ridge portion 20 is gradually lowered from the center portion to the peripheral portion of the food placement surface 5, the food is mainly placed on the food portion of the entire length of the inner ridge portion 20. The high part which is a part near the center part of the surface 5 will contact. And since the several unevenness | corrugation is each formed in the top part of the peripheral ridge part 10a, 10b, and the top part of the inner side ridge part 20, the foodstuff is the convex part 30 and inner side in the top part of the peripheral ridge part 10a, 10b. It will contact the convex part 30 in the top part of the protrusion part 20. FIG. Therefore, the contact area with food is very small.

  For example, when food containing a lot of oil such as deep-fried food is stored in a container, the oil contained in the food may ooze out of the food. This is particularly noticeable when heated in a microwave oven while the food is contained in a lidded container, and oil oozes out from the food and accumulates at the bottom of the food, causing the food to become sticky. . In this container, the oil exuded from the food flows from the convex portion 30 at the top of the peripheral ridge portions 10a, 10b to the concave portion 31, and from the convex portion 30 at the top of the inner ridge portion 20 to the concave portion 31. , Hard to collect at the bottom of food. Moreover, the oil adhering to the top of the inner ridge portion 20 flows from a high portion to a low portion of the inner ridge portion 20. That is, the oil adhering to the top of the inner ridge 20 flows through the top of the inner ridge 20 from the central side of the food placing surface 5 to the peripheral side. Then, the oil flows from the top of the peripheral ridges 10 a and 10 b and the top of the inner ridge 20 to the food placing surface 5 and the circumferential groove 6. Since the food placement surface 5 is inclined so that the central portion thereof is relatively high and the peripheral portion thereof is relatively low, the oil that has flowed down to the food placement surface 5 is directed to the peripheral portion of the food placement surface 5. Head to. Although the peripheral ridges 10a and 10b are formed on the peripheral edge of the food placing surface 5, the cutouts 10a and 10b are formed at predetermined locations on the peripheral ridges 10a and 10b. The oil that has flowed through the mounting surface 5 flows down to the circumferential groove 6 through the notches 10a and 10b. Therefore, even if food such as fried chicken is placed in a container with a lid and heated in a microwave oven, the oil draining becomes good, the food does not become sticky and can be eaten deliciously.

  In addition, since the peripheral protrusions 10a and 10b and the plurality of inner protrusions 20 are formed on the food placing surface 5 and the tops thereof are uneven, it is difficult to slip even if the food contains a lot of oil. . Therefore, the stored food is less likely to be displaced during transportation or display work, and a beautiful accommodation state is maintained, thereby preventing deterioration in appearance due to the displacement.

DESCRIPTION OF SYMBOLS 1 Bottom part 2 Side part 3 Flange part 4 Edge part 5 Food mounting surface 6 Circumferential groove 7 Leg part 8 Overhang | projection part 10a Peripheral protrusion part 10b of the long side Side peripheral protrusion part 11a of the short side Part 11b Short side cutout 20 Inner ridge 21 Cutout 30 Convex 31 Concave

Claims (4)

A food packaging container comprising a bottom surface portion, a side surface portion extending upward from a peripheral edge portion of the bottom surface portion, and a flange portion extending laterally from an upper end portion of the side surface portion,
On the top surface of the bottom surface portion, a circumferential groove that circulates around the peripheral edge of the top surface of the bottom surface portion, and a hill-like food placing surface surrounded by the circumferential groove are formed,
A peripheral ridge is provided on the peripheral portion of the food placement surface so as to circulate around the peripheral portion, and an inner region of the food placement surface surrounded by the peripheral ridge portion has a predetermined direction. A plurality of inner ridges extending upward are projected upward, and a plurality of irregularities are formed on the top of the peripheral ridge and the top of the inner ridge in the longitudinal direction of the peripheral ridge and the inner ridge, respectively. It is formed repeatedly alternately, the concave and convex recesses cross the top of the peripheral ridge and the top of the inner ridge in the width direction,
The amount of protrusion of the inner ridge gradually decreases from the center to the periphery of the food placement surface, and the height of the inner ridge gradually decreases from the center to the periphery of the food placement surface. A food packaging container.   The food packaging container according to claim 1, wherein a cutout portion is formed at a predetermined portion of the entire circumference of the peripheral ridge portion so as to divide the peripheral ridge portion.   The food packaging container according to claim 1 or 2, wherein the food placing surface is inclined so that the height decreases from the central portion to the peripheral portion.   A container with a lid comprising the container for food packaging according to any one of claims 1 to 3 and a lid fitted to the container.

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