JP2018065618A - Food packaging container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a food packaging container capable of preventing stickiness of foods containing a large amount of oil and water content.SOLUTION: A plurality of projections 10a,10b extending in a stripe shape in a plan view are spaced apart from each other on the bottom surface part 1 so as to protrude upwardly, and the striped top surface 20 of the plurality of projections 10a,10b is provided with food, wherein the projections 10a,10b are formed with irregularities on the shaped top surface 20, the irregularities are repeatedly formed in the longitudinal direction of the projections 10a,10b, the recess 22 constituting the irregularities of the striped top surface 20 of the projections 10a,10b traverses the striped top surface 20 of the projections 10a,10b, the convex portion 21 constituting the irregularities of the striped top surface 20 of the projections 10a,10b, curves upward along the longitudinal direction of the projections 10a,10b and also curves upward along the width direction of the projections 10a,10b.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a food packaging container, and more particularly, to a container suitable for applications that contain foods rich in moisture and oil.

  For example, foods cooked with oil typified by fried foods such as tempura and fried foods have a large amount of oil on the surface. Therefore, for example, when the tempura is placed on the flat bottom surface of the container, the tempura clothes are likely to be sticky.

  The following Patent Documents 1 and 2 disclose a configuration in which a bottom surface portion has a plurality of ridges extending in a streak shape in plan view and food is placed on the top surfaces of the plurality of ridges. In this configuration, the food is supported by a line by the top surfaces of the plurality of protrusions. In particular, since the oil has a high viscosity, the oil tends to accumulate in the linear portion of the food that comes into contact with the streak-shaped top surface of the ridge, and that portion is also sticky. Such a problem is likely to occur even in the case of a food with a lot of moisture.

JP-A-11-268779 Japanese Patent No. 3073391

  Therefore, the present invention has been made in view of the above conventional problems, and an object of the present invention is to provide a food packaging container capable of preventing stickiness of foods rich in oil and moisture.

  The present invention has been made to solve the above problems, and the food packaging container according to the present invention has a plurality of protrusions extending in a streak shape while being spaced apart from each other on the inner surface of the container, A food packaging container in which food is placed on the streak-like top surfaces of the plurality of protrusions, wherein unevenness is formed on the streak-like top surfaces of the protrusions.

  When food is stored in the food packaging container having the above-described configuration, the food is placed on the streaky top surfaces of the plurality of protrusions. Therefore, the placed food comes into contact with the streak top surface of the ridge, but since the top surface of the ridge is uneven, the streak top surface of the ridge is uneven. The contact area between the food and the streaked top surface is smaller than when the flat surface is not flat, or the food is relatively strongly in contact with the convex portion on the streaked top surface and relatively weak in contact with the concave portion. Will do. This contact state may have various modes depending on the type of food and the surface shape. Depending on the type and surface shape of the food, for example, the food may contact only the convex portion without contacting the concave portion. In addition, food may contact not only the convex part but also the concave part, but may contact the concave part weakly. In any case, even if the food is rich in oil, the drainage is good, and even if the food is high in moisture, the drainage is good, and the stickiness of the food is suppressed. In addition, the unevenness formed on the streak-like top surface of the ridge makes it difficult for the placed food to slip carelessly, and also prevents the food from being displaced.

  In addition, the food packaging container according to the present invention includes a horizontal use mode in which the container main body and the lid are integrally formed via a hinge portion, and the bottom surface portion of the container main body is a food placing surface, and the hinge portion. A container for food packaging that can be used for both of the vertical use in which the portion of the side surface portion of the container body located between the bottom surface portion and the bottom surface portion serves as a food placement surface, the bottom surface portion of the container body and the side surface A plurality of ridges extending in a streak pattern are provided on the inner surface side of the portion of the container, and the ridges of the bottom surface of the container main body and the side surface of the container main body Concavities and convexities are respectively formed on the streaky top surfaces of the ridges.

  The food packaging container having such a structure can be used both horizontally and vertically. In any usage mode, food is placed on the streaky top surfaces of the plurality of protrusions. For example, display at a store in a vertical position can provide high space efficiency and high appeal to buyers. Moreover, after purchase and taking home, high stability can be obtained as a horizontal installation. In particular, in the case of a microwave oven-compatible container, high stability is obtained when cooking with a microwave oven, and cooking can be performed efficiently. In any case, in any of the vertical and horizontal positions, the food is drained and drained, and the stickiness of the food is suppressed. Moreover, the position shift of food is also suppressed by the unevenness of the streaky top surface.

  In particular, it is preferable that irregularities are repeatedly formed in the longitudinal direction of the ridges, the state of oil draining and draining becomes even better, and the sliding of food in the longitudinal direction of the ridges can be further prevented.

  Moreover, it is preferable that the recessed part which comprises the unevenness | corrugation of the streak top surface of a protrusion has crossed the streaky top surface of a protrusion. For example, in the case of foods with a lot of oil, the oil adhering to the convex part flows into the adjacent concave part. And since the recessed part has crossed the streak-like top surface of a protrusion, the oil which flowed into the recessed part flows into the both sides | surfaces of a protrusion from a recessed part. Therefore, oil draining can be performed efficiently. The same applies to draining. In addition, the direction in which the concave portion crosses the streak-like top surface of the ridge is the width direction of the ridge, and may be a direction inclined with respect to the width direction of the ridge.

  Further, the convex portion constituting the irregularities of the ridge-shaped top surface of the ridge is curved toward the ridge-shaped top surface side along the longitudinal direction of the ridge, and along the width direction of the ridge. It is preferable to curve toward the streaky top surface side. That is, it is preferable that the convex portion constituting the unevenness of the ridge-shaped top surface of the ridge is curved toward the ridge-shaped top surface side in two directions, ie, the longitudinal direction of the ridge and the width direction of the ridge. This makes it easier for the food to make point contact with the convex portion, and makes it easier for oil to flow from the convex portion to the concave portion. For example, oil adhering to the convex portion efficiently flows down from the convex portion to both side surfaces of the ridge, and also efficiently flows down from the convex portion to the concave portion. Thus, the oil adhering to the convex part flows down efficiently without staying in the state adhering to the convex part.

  As described above, since the projections and depressions are formed on the streak-like top surface of the ridge, the food is difficult to stick even if food containing a lot of oil or food containing a lot of water is contained.

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. CC schematic sectional drawing of FIG. The principal part enlarged view of FIG. It is a principal part end view corresponding to FIG. 4, Comprising: (a) is an end view in a recessed part among the streaky top surfaces of a protrusion, (b) is an end surface view in a convex part among the streaky top surfaces of a protrusion. (A) And (b) is an expanded sectional view which cut | disconnected the protrusion of the same container in the width direction, Comprising: Sectional drawing when cut | disconnected by the recessed part of the streaky top surface of a protrusion. The end view corresponding to FIG.8 (b) which shows the use condition of the container. The principal part sectional drawing corresponding to FIG. 5 which shows the container for food packaging in other embodiment of this invention. The perspective view which shows the cover open state of the container for food packaging in other embodiment of this invention. The front view which shows the open cover state of the food packaging container. The front view which shows the closed lid horizontal state of the container for food packaging. The front view which shows the closed lid vertical installation state of the food packaging container. The schematic sectional drawing which shows the closed lid horizontal state of the food packaging container. The schematic sectional drawing which shows the closed lid vertical installation state of the food packaging container. It is the principal part enlarged front view of the protrusion of the container for food packaging, (a) is the principal part enlarged front view of the protrusion on the bottom part, (b) is the principal part enlarged front view of the protrusion on the side part. Figure.

  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-like container having a height dimension smaller than a vertical dimension and a horizontal dimension as shown in FIGS. The food to be contained is not particularly limited, but is suitable for foods rich in oil and moisture, and particularly suitable for deep-fried foods such as tempura, fried food, fried chicken, 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 container has a horizontally long rectangular shape and has a longer horizontal dimension than a vertical dimension. Therefore, the longitudinal direction of the container is the width direction and the short side direction, and the lateral direction of the container is the longitudinal direction and the long side direction.

  The container includes a bottom surface portion 1 and a side surface portion 2 rising upward from a peripheral edge portion of the bottom surface portion 1. 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 hill portion 5 is formed that is one step higher in a trapezoidal shape. The hill portion 5 has a rectangular shape in plan view, and a groove portion 6 having a predetermined width is provided around the hill portion 5. The groove part 6 is located between the hill part 5 and the side part 2. Accordingly, 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 so as to surround the outer region, the hill portion 5 forms the inner region, and the groove portion 6 is the outer region. It constitutes an area. The lower surface of the groove 6 serves as a placement surface when the container is placed on a table or the like. Therefore, a predetermined portion on the lower surface of the groove 6 becomes the leg portion 7 of the container.

  The hill portion 5 corresponds to the shape of the container in plan view and has a horizontally long rectangular shape, and the vertical dimension thereof is shorter than the horizontal dimension. The hill part 5 occupies the main part of the upper surface of the bottom part 1. Further, as shown in FIG. 4, a plurality of protrusions 10 a and 10 b extending in a streak shape in plan view are provided on the upper surface of the hill portion 5 so as to protrude upward. The ridges 10 a and 10 b include a streaked top surface 20 and a pair of side surfaces 12 descending from the streaked top surface 20. The longitudinal dimension of the protrusions 10a and 10b is arbitrary. The length in the longitudinal direction of the protrusions 10a and 10b may be longer than the dimension in the width direction of the protrusions 10a and 10b. The number (number) of the plurality of protrusions 10a and 10b is arbitrary, but is set to a number that allows food to be placed evenly. A plurality of ridges 10a and 10b are arranged side by side with an interval in the lateral direction of the container, and the interval between the ridges 10a and 10b is constant. Accordingly, the plurality of protrusions 10a and 10b are all parallel to each other. The ridges 10a and 10b are plate-shaped and are standing upward. The ridges 10a and 10b extend along the longitudinal direction of the container. That is, the longitudinal direction of the protrusions 10a and 10b is the longitudinal direction of the container, and is formed over substantially the entire length in the longitudinal direction of the high platform 5. In the present embodiment, the ridges 10a and 10b are formed in a streak shape continuously over substantially the entire length in the vertical direction of the hill part 5, but for example, the ridges 10a and 10b are in the vertical direction of the hill part 5. The center part may be divided into two, and the divided two protrusions 10 a and 10 b may be arranged in series in the vertical direction of the high platform part 5. Moreover, the structure by which one protrusion 10a, 10b was divided | segmented into three or more may be sufficient.

  As shown in FIGS. 5 and 6, the heights of the individual protrusions 10a and 10b are substantially constant except for both end portions in the longitudinal direction, and both end portions in the longitudinal direction are gradually curved and lowered to the shoulder portion 11 and The ridges 10 a and 10 b reach the peripheral edge of the upper surface of the hill part 5. Both shoulder portions 11 are symmetrical to each other. As shown in FIG. 4, the height of the protrusions 10 a and 10 b is lower than the height of the upper end of the side surface portion 2. That is, although the height of the protrusions 10a and 10b is formed lower than the height of the upper end of the flange portion 3, it may be formed higher.

  The plurality of protrusions 10a and 10b may all have the same shape, but in the present embodiment, only two protrusions 10a located at both ends as shown in FIG. 4 are higher than the other protrusions 10b. Is high. Accordingly, in the present embodiment, there are two types of protrusions 10a and 10b, the two first protrusions 10a having a relatively high height located at both ends, and positioned between them, And a plurality of second protrusions 10b having a relatively low height. By setting it as such a structure, the position shift of the cut | judder at the time of mounting a slippery cut etc. can be suppressed further. In the following description, when it is not necessary to distinguish the first protrusion 10a and the second protrusion 10b from each other, they are simply referred to as protrusions 10a and 10b. In the present embodiment, seven second protrusions 10b are formed, but the number thereof is arbitrary, preferably three or more, and more preferably five or more. The left and right first protrusions 10a have the same height, and the second protrusions 10b all have the same height. However, the heights of the protrusions 10a and 10b may be individually different, or may be three or more types.

  When the ridges 10a and 10b are cut in the width direction, they are as shown in FIG. A cross-sectional shape when cut in this direction will be referred to as a cross-sectional shape. In a cross-sectional view of the ridges 10a and 10b cut in the width direction, the cross-sectional shape of the ridges 10a and 10b is a mountain shape that becomes narrower toward the upper side. Therefore, both side surfaces 12 of the protrusions 10a and 10b are inclined surfaces. The side surface 12 of the protrusions 10a and 10b may be a flat surface that does not curve, but in this embodiment, it is a concave curved surface that curves downward. And the lower ends of the side surfaces 12 of two adjacent ridges 10a and 10b are continuous with each other to form one concave curved surface.

  A valley portion 13 is formed between the adjacent ridges 10a and 10b, and the valley portion 13 extends along the longitudinal direction of the ridges 10a and 10b. When the trough 13 is cut in the width direction, it is as shown in FIG. A cross-sectional shape when cut in this direction will be referred to as a cross-sectional shape. The cross-sectional shape of the valley portion 13 is an arc shape curved downward, and the valley portion 13 is smoothly continuous with the side surfaces 12 of the protrusions 10a and 10b on both sides thereof. Each trough 13 has the lowest height in the center of each trough 13 in a cross-sectional view cut in the width direction as shown in FIG. The center is the bottom of the valley. The cross-sectional shape of the valley portion 13 is not limited to the arc shape curved downward, and may be U-shaped or V-shaped. Further, the cross-sectional shape of the valley portion 13 may be a shape having a flat portion at the bottom of the valley. For example, the cross-sectional shape of the valley portion 13 may be a rectangle. In addition, in the form shown in FIG. 4, although the height of the valley bottom part of the some trough part 13 is mutually the same height, you may mutually differ.

  The trough portion 13 is parallel to the ridges 10a and 10b and has a bowl shape extending in the longitudinal direction of the ridges 10a and 10b. FIG. 6 shows a cross-sectional shape when the valley portion 13 is cut along its longitudinal direction. The cross-sectional shape when cut along the longitudinal direction as shown in FIG. 6 is referred to as a vertical cross-sectional shape. As shown in FIG. 6, the longitudinal cross-sectional shape of the valley portion 13 is such that the central portion 13a in the longitudinal direction of the valley portion 13 is the highest and gradually increases from the central portion 13a to the both ends 13b. The shape is low. Further, the vertical cross-sectional shape of the valley portion 13 is a curved surface that is gently curved upward as a whole. Both end portions 13 b in the longitudinal direction of the valley portion 13 are located at both end portions in the vertical direction of the hill portion 5. Both end portions 13b in the longitudinal direction of the valley portion 13 are descending while being sharply curved with a smaller radius of curvature than the other portions, and are continuously connected to the side surface 5a of the hill portion 5. In the present embodiment, a stepped portion 5b having a narrow or streak shape that is one step higher is provided on the periphery of the hill portion 5 so as to protrude upward, but at both end portions 13b in the longitudinal direction of the valley portion 13, The step portion 5 b does not exist, and the step portion 5 b is partially cut out in the valley portion 13, so that the oil flowing out from the food is guided to the groove portion 6. In addition, the area | region between the 1st protrusion 10a of both ends and the both ends of the horizontal direction of the hill part 5 becomes a flat plane except the level | step-difference part 5b, and the height is higher than the trough part 13. Low.

<Unevenness of the streaky top surface 20 of the protrusions 10a, 10b>
Next, the streaky top surface 20 of the ridges 10a and 10b will be described. Concavities and convexities are formed on the streaky top surfaces 20 of the ridges 10a and 10b. The irregularities are composed of a convex portion 21 projecting relatively upward and a concave portion 22 recessed relatively downward. In addition, the unevenness | corrugation of the streaky top surface 20 is a minute unevenness | corrugation as the whole protrusion 10a, 10b, Comprising: The protrusion amount to the upper part of the convex part 21, and the recessed amount to the downward direction of the recessed part 22 are protrusions 10a, 10b. It is smaller than the amount of protrusion. The height difference between the convex portion 21 and the concave portion 22 is less than at least half of the protruding amount of the ridges 10a and 10b, specifically, for example, 0.3 to 3 mm, preferably 0.5 to 1.5 mm.

  The unevenness is formed continuously in the longitudinal direction of the ridges 10a and 10b. That is, the concave portions 22 and the convex portions 21 constituting the unevenness are alternately formed and repeatedly formed in the longitudinal direction of the protrusions 10a and 10b, and the unevenness is formed over the entire length of the protrusions 10a and 10b. Has been. Accordingly, irregularities are also formed on the streaky top surface 20 of the shoulder portion 11 at both ends in the longitudinal direction of the ridges 10a and 10b. The recess 22 crosses the streaky top surface 20 of the ridges 10a and 10b in the width direction of the ridges 10a and 10b. Therefore, the convex part 21 located between the adjacent recessed parts 22 is also the shape which cross | intersects the stripe-like top surface 20 of the protrusion 10a, 10b in the width direction of the protrusion 10a, 10b similarly to the recessed part 22. FIG. However, the recess 22 only needs to cross the streak top surface 20 and may cross in a direction inclined with respect to the width direction of the streak top surface 20.

  The uneven shape of the streaky top surface 20 of the ridges 10a and 10b will be described in more detail. When the ridges 10a and 10b are viewed in the width direction, that is, when the ridges 10a and 10b are viewed from the side surface 12, the streaky top surfaces 20 of the ridges 10a and 10b are as shown in FIGS. It is not a horizontal flat surface, but has a concavo-convex shape that continues in a wavy pattern. 5 and 7 are cross-sectional views when the protrusions 10a and 10b are cut along the longitudinal direction. In FIG. 7, the longitudinal direction of the ridges 10 a and 10 b is indicated by a symbol L. The convex portions 21 constituting the irregularities of the streaky top surfaces 20 of the ridges 10a and 10b are curved upward along the longitudinal direction of the ridges 10a and 10b. The concave portion 22 constituting the irregularities of the streak-like top surface 20 has a shape curved downward along the longitudinal direction of the ridges 10a and 10b. And the adjacent convex part 21 and the recessed part 22 are continuing smoothly. As described above, the irregularities of the streaky top surfaces 20 of the ridges 10a and 10b are continuous in a waveform while drawing a smooth curve along the longitudinal direction of the ridges 10a and 10b. In addition, it is preferable that the height difference of the recessed part 22 and the convex part 21 is larger than the thickness of the sheet | seat which comprises a container.

  On the other hand, the cross-sectional shape when the protrusions 10a and 10b are cut in the width direction is shown in FIG. FIG. 9 is a cross-sectional view when the ridges 10a and 10b are cut in the width direction, and is a cross-sectional view when the ridges 10a and 10b are cut at the concave portion 22 among the irregularities of the streaky top surface 20. More specifically, it is a cross-sectional view when cut at the lowermost part of the recess 22. In FIG. 9, the width direction of the ridges 10 a and 10 b is indicated by a symbol W. The cross-sectional shape when the protrusions 10a and 10b are cut in the width direction is referred to as a cross-sectional shape. However, as shown in FIG. 9A, the cross-sectional shape of the convex portion 21 is curved upward as a whole. The convex portion 21 is smoothly continuous with the both side surfaces 12 of the protrusions 10a and 10b. The cross-sectional shape of the recess 22 is a shape having a flat straight portion at the center in the width direction. The length of the flat straight line portion is arbitrary, but in this embodiment, it occupies more than half the length. Note that both end portions of the concave portion 22 are curved and descend, and are smoothly continuous with both side surfaces 12 of the protrusions 10a and 10b. 4 and 8 (a) are cross-sectional views when the container is cut at the position of the concave portion 22, and FIG. 8 (b) is a cross-sectional view when the container is cut at the position of the convex portion 21. .

  In FIG. 9A, the cross-sectional shape of the concave portion 22 is a shape having a flat straight portion at the center in the width direction. However, instead of the flat straight portion, the shape may be gently curved upward. Good. However, if the cross-sectional shape of the concave portion 22 is a shape having a flat straight portion, the concave portion 22 can be easily formed with a mold during sheet molding. Further, as shown in FIG. 9B, the cross-sectional shape of the concave portion 22 is also a shape that curves upward from the both side surfaces 12 of the ridges 10 a and 10 b in the same manner as the convex portion 21. Also good.

<Side part 2>
A flange portion 3 is formed on the upper end portion of the side surface portion 2 toward the outside. The flange portion 3 is formed over the entire circumference. It is preferable that the outer edge portion of the flange portion 3 is formed with an edge portion 4 extending outward, for example, horizontally or slightly downward over the entire circumference. Thus, when the edge part 4 is formed in the flange part 3, the outer edge of the edge part 4 becomes an outer edge of a container, and becomes a part located in the outermost side in planar view. 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.

  In the present embodiment, a lid (not shown) is fitted inside the container, that is, a so-called inner fitting configuration. Therefore, the upper portion of the side surface portion 2 is reversely inclined gradually inward toward the upper side. Although the tapered fitting portion 8 is formed, a so-called external fitting configuration in which the lid is fitted to the outside of the container may be used. Moreover, the structure which a lid | cover does not fit may be sufficient, and the structure which does not use a lid | cover may be sufficient.

<Material>
The container is made of a synthetic resin sheet and is a sheet molded product formed by so-called 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 have opposite shapes.

  Here, as a synthetic resin sheet, for example, a sheet made of various synthetic resins such as polyethylene terephthalate, polystyrene, polyolefin such as polypropylene and polyethylene, a sheet filled with an inorganic material as these sheet materials, and foamed as a sheet material Foamed sheets, and stretched sheets obtained by stretching these sheets can be used. In particular, it is preferably composed of a heat-resistant sheet that can be heated in a range.

  The food T is stored in the container as described above. For example, as shown in FIG. 10, the food T is placed on the streaked top surfaces 20 of the plurality of protrusions 10a and 10b. The food T is placed so as to straddle the striped top surfaces 20 of the plurality of protrusions 10a, 10b. In addition, what is necessary is just the mounting aspect which the food T straddles on the streaky top surface 20 of at least 2 protrusion 10a, 10b. The interval between the protrusions 10a and 10b is related to the size of the food T to be stored, and it is preferable to store the food T having a size that does not drop into the valley 13 between the protrusions 10a and 10b.

  For example, the case where the food T has a high oil content such as tempura will be described. Since the food T is placed on the plurality of protrusions 10a and 10b, the contact area between the food T and the container is small, and the food T T comes into contact with the plurality of ridges 10a and 10b in a state close to line contact in a macro manner. In addition, since the ridges 10a, 10b are formed with irregularities on the streaked top surface 20, the contact area with the food T is further reduced, resulting in a point contact state, or the convex portions of the streaked top surface 20 21 and relatively weakly in contact with the concave portion 22 of the streak-like top surface 20. Therefore, the oil of the food T is less likely to stay on the streaked top surface 20 of the ridges 10a and 10b, and the oil T efficiently flows down from the streaky top surface 20 of the ridges 10a and 10b to the adjacent valley portion 13. Can drain oil. In addition, it flows from the convex portion 21 of the streaky top surface 20 to the concave portion 22. Accordingly, the stickiness of the food T can be prevented, and for example, the crunchy texture of the food T can be enjoyed even when the food T is taken home from the store. Moreover, if the synthetic resin sheet which comprises a container has heat resistance and respond | corresponds to the heating by a microwave oven, it can be heated with a microwave oven with the food T accommodated in the container. However, even at that time, the oil drainage is good and the food T is not sticky. Furthermore, since the projections 10a and 10b are formed with irregularities on the streaky top surfaces 20, even if the food T has a lot of oil and is slippery, the food T becomes inadvertently difficult to slip, and the food T Misalignment is also suppressed, a good appearance can be maintained, and the shape of the food T can be prevented from being lost.

  Moreover, since the unevenness is repeatedly formed in the longitudinal direction of the ridges 10a and 10b and is formed over the entire length of the ridges 10a and 10b, the food T has a wide width such as croquette or tonkatsu. However, the oil drainage is good over the whole, and stickiness can be prevented over a wide range. At the same time, misalignment of the food T can be reliably prevented.

  In particular, when the concave portion 22 constituting the irregularities of the streak top surface 20 of the protrusions 10a, 10b crosses the streak top surface 20 of the protrusions 10a, 10b in the width direction of the protrusions 10a, 10b. The oil that has flowed down from the convex portion 21 to the concave portion 22 is efficiently discharged from the concave portion 22 to the both side surfaces 12 of the ridges 10a and 10b. Therefore, even better oil draining can be achieved. In particular, when the recess 22 is cut in the width direction of the ridges 10a and 10b, the cross-sectional shape of the recess 22 is a shape that is curved upward along the width direction of the ridges 10a and 10b. The oil flows more efficiently from the recess 22 to the both side surfaces 12 of the ridges 10a and 10b.

  Further, the convex portions 21 constituting the irregularities of the streaky top surface 20 of the ridges 10a, 10b are curved upward along the longitudinal direction of the ridges 10a, 10b, and the ridges 10a, 10b, When it curves toward the upper side along the width direction of 10b, the food T will be in point contact with the convex part 21 easily. Therefore, the oil adhering to the convex portion 21 efficiently flows down from the convex portion 21 to the both side surfaces 12 of the protrusions 10a and 10b, and also efficiently flows down from the convex portion 21 to the concave portion 22. The oil shortage becomes even better.

  Furthermore, since the trough portion 13 located between the ridges 10a and 10b is bowl-shaped and the central portion in the width direction is the lowest in the cross-sectional shape, it flows down from the ridges 10a and 10b to the trough portion 13. Oil will collect at the bottom of the valley 13. And since the longitudinal cross-sectional shape of the trough part 13 becomes a shape which descend | falls gradually toward the both ends 13b of a longitudinal direction, the oil collected at the trough bottom part of the trough part 13 is the longitudinal direction of the trough part 13 It flows toward the both end portions 13b and eventually flows down into the groove portion 6 around the hill portion 5. Particularly, since both end portions 13b in the longitudinal direction of the valley portion 13 are curved and descend and are continuously connected to the side surface 5a of the hill portion 5, the oil passes from the valley portion 13 to the side surface 5a of the hill portion 5. Efficiently flows down into the groove 6.

  In addition, when the food T is supported by the first ridges 10a that are long and relatively high in height as shown in FIG. 10, the end T1 of the food T is the first end. Since it is lifted upward by the one protrusion 10a, the end portion T1 of the food T is pushed upward. If the end portion T1 of the food T hangs downward and is inclined, oil easily collects at the end portion T1 of the food T, and the end portion becomes easy to stick. On the other hand, when the end T1 of the food T is lifted by the first protrusion 10a as shown in FIG. 10, it becomes difficult for oil to collect at the end T1 of the food T, and the end T1 of the food T The oil will collect on the first protrusion 10a. And since oil flows from the convex part 21 of the streaky top surface 20 of the first protrusion 10a in contact with the food T to the concave part 22 or both side surfaces 12 of the first protrusion 10a. The end portion T1 of the food T is maintained with a crisp texture, and stickiness is prevented.

  In the present embodiment, the protrusions 10a and 10b extend in a streak shape along the vertical direction of the container, but may extend in a streak shape along the horizontal direction of the container, and extend in both the vertical and horizontal directions. Also good. That is, the protrusions 10a and 10b may be formed in a vertical and horizontal cross shape. Moreover, the protrusion 10a, 10b extended in the direction inclined with respect to the vertical direction or the horizontal direction may be used. Further, the protrusions 10a and 10b may be not only linear in a plan view but also a curved shape or a bent shape, a shape curved in an arc shape in a plan view, a shape curved in an S shape or a waveform in a plan view, Alternatively, it may be a shape bent in a dogleg shape in a plan view or a jagged shape in a plan view.

  In addition, you may reinforce each part of a container by providing an appropriate rib.

  Moreover, in the said embodiment, although the protrusion 10a, 10b was the structure spaced apart from the side part 2, the protrusion 30 reached the side part 2 and was connected with the side part 2 like FIG. It may be a configuration.

  Next, a food packaging container having a configuration in which the container body 40 and the lid 41 are connected via the hinge portion 42 will be described with reference to FIGS. The container is of a lid-integrated type in which a container body 40 and a lid 41 are integrally formed by thermoforming a synthetic resin sheet, and a hinge portion 42 for connecting the container body 40 and the lid 41. Is provided between the container body 40 and the lid 41. By the hinge part 42, the lid 41 can be rotated relative to the container body 40 around an axis along the longitudinal direction of the hinge part 42. Specific configurations of the container main body 40, the lid 41, and the hinge portion 42 are arbitrary, but for example, the configuration shown in the figure can be adopted. For convenience of explanation, the opening side of the container body 40 is the upper side, and the opening side of the lid 41 is the lower side.

  The container body 40 is, for example, a rectangle in plan view, but may have other shapes such as a triangular shape or a circular shape. In this embodiment, specifically, it is a rectangular shape in plan view. The container main body 40 includes a bottom surface portion 50, a main body side surface portion that rises from the peripheral edge of the bottom surface portion 50, and a main body flange portion 52 that extends outward from the upper end portion of the main body side surface portion. A hinge portion 42 is continuously provided on one side of the four sides of the main body flange portion 52. In this embodiment, the hinge portion 42 is formed on the long side of the long side and the short side of the main body flange portion 52. Therefore, the longitudinal direction of the hinge part 42 is a long side direction.

  The bottom surface portion 50 is inclined with respect to the main body flange portion 52. In the reference posture in which the main body flange portion 52 is horizontal as shown in FIG. 13, the bottom surface portion 50 is not parallel to the horizontal main body flange portion 52 but is inclined. The inclination direction of the bottom surface portion 50 is a direction orthogonal to the hinge portion 42 in a plan view and is a direction from the hinge portion 42 to a side opposite to the hinge portion 42. In the present embodiment, the container body 40 The short side direction. And since the bottom face part 50 inclines in the predetermined direction, the depth of the container main body 40 is deepest in the edge part 50a of the bottom face part 50 near the hinge part 42, and becomes shallow gradually, so that it leaves | separates from the hinge part 42. In other words, it is shallowest at the end portion 50b of the bottom surface portion 50 far from the hinge portion. That is, the vertical separation distance from the main body flange portion 52 to the bottom surface portion 50 is the longest at the end portion 50a of the bottom surface portion 50 close to the hinge portion 42, and decreases as the distance from the hinge portion 42 increases. It is the shortest at the end portion 50b of the bottom surface portion 50 that is far from the center.

  A concave portion 53 is formed at an end portion of the inner surface of the bottom surface portion 50 on the hinge portion 42 side. The concave portion 53 has a shape that is long in the direction along the hinge portion 42, and is formed to have a major portion of the total length in the long side direction. Since the concave portion 53 is formed on the inner surface of the bottom surface portion 50, the convex portion 54 is formed on the outer surface of the bottom surface portion 50 corresponding to the concave portion 53. When the closed container is placed on the horizontal surface 100 as shown in FIG. 16, the end portion 50 b opposite to the hinge portion 42 of the outer surface of the bottom surface portion 50 and the convex portion 54 on the outer surface of the bottom surface portion 50 are the horizontal surface 100. Abut. Therefore, the bottom surface portion 50 is in an inclined state in which the hinge portion 42 side is slightly lifted upward by the convex portion 54 on the outer surface. In addition, it is preferable to form a reinforcing rib 55 extending in the short side direction in the concave portion 53 on the inner surface of the bottom surface portion 50 or the convex portion 54 on the outer surface.

  Since the container main body 40 has a rectangular shape in plan view, the main body side surface portion of the container main body 40 includes four wall surface portions 51a, 51b, 51c, 51d. That is, the body side surface portion of the container body 40 includes a first wall surface portion 51a located between the hinge portion 42 and the bottom surface portion 50, a second wall surface portion 51b facing the first wall surface portion 51a, It comprises a third wall surface portion 51c and a fourth wall surface portion 51d that connect the left and right end portions of the first wall surface portion 51a and the second wall surface portion 51b, respectively. The first wall surface portion 51 a is located closest to the hinge portion 42 and is located below the hinge portion 42. The second wall surface portion 51b is at a position farthest from the hinge portion. The first wall surface portion 51a and the second wall surface portion 51b extend along the long side direction of the container, and the third wall surface portion 51c and the fourth wall surface portion 51d extend along the short side direction of the container. Yes.

  As described above, since the bottom surface portion 50 is inclined in a predetermined direction with respect to the main body flange portion 52, the vertical dimension of the main body side surface portion is not constant over the entire circumference, and the first The wall surface portion 51a is the longest, the second wall surface portion 51b is the shortest, and the third wall surface portion 51c and the fourth wall surface portion 51d are gradually shortened as the distance from the hinge portion 42 increases. Moreover, the angle between the main body flange part 52 and the outer surface of the 1st wall surface part 51a is an obtuse angle exceeding 90 degree | times. The angle between the inner surface of the first wall surface portion 51a and the inner surface of the bottom surface portion 50 is preferably an acute angle of less than 90 degrees.

  On the inner surface of the bottom surface portion 50 of the container main body 40, a plurality of protrusions 56a and 56b extending in a line shape in a plan view are provided so as to protrude upward, as in the case of the container shown in FIG. The plurality of protrusions 56a and 56b are arranged in parallel with a space therebetween, and the plurality of protrusions 56a and 56b are all parallel. The interval between the protrusions 56a and 56b is, for example, constant, but may not be constant. The longitudinal direction of the protrusions 56a and 56b is a direction orthogonal to the hinge portion 42, and is a short side direction in the present embodiment. Of the plurality of protrusions 56 a and 56 b, the central protrusion 56 b excluding the two protrusions 56 a located at both ends is formed over the entire length in the short side direction of the inner surface of the bottom surface portion 50, and the recess 53 Has reached. The two ridges 56 a located at both ends extend from the end 51 b on the opposite side of the hinge portion 42 to the front of the recess 53 and do not reach the recess 53. However, the length of the protrusions 56a and 56b is arbitrary. In the present embodiment, the heights of the plurality of protrusions 56a and 56b are all the same, but may be different from each other.

  Similarly, a plurality of protrusions 57 project from the inner surface of the first wall surface portion 51a of the main body side surface portion of the container main body 40. The number and arrangement of the ridges 57 of the first wall surface portion 51a are arbitrary as in the ridges 56a and 56b of the bottom surface portion 50, but in this embodiment, the center of the ridges 56a and 56b of the bottom surface portion 50 is the center. It is the same space | interval and arrangement | positioning as the side protrusion 56b. And the protrusion 56b of the center side of the bottom face part 50 is extended to the 1st wall surface part 51a, and is connected with the protrusion 57 of the 1st wall surface part 51a. That is, the protrusion 56b on the center side of the bottom surface portion 50 and the protrusion 57 of the first wall surface portion 51a are continuous in a straight line. However, the protrusion 56b of the bottom face part 50 and the protrusion 57 of the first wall surface part 51a may be separated. Although the height and protrusion amount of the protrusion 57 of the first wall surface portion 51a may be various, for example, the protrusion may be formed so that the height becomes lower toward the upper side, that is, away from the bottom surface portion 50.

  Asperities as described above are formed on the streaky top surface 60 of the protrusions 56a and 56b of the bottom surface portion 50 and the streaky top surface 70 of the protrusion 57 of the first wall surface portion 51a. The shape of the projections and depressions is arbitrary, and the ridges 56a and 56b of the bottom surface portion 50 and the ridges 57 of the first wall surface portion 51a may be the same shape, but in this embodiment, they are different from each other. Yes.

  The uneven | corrugated shape of the streaky top surface 60 of the protrusion 56a, 56b in the bottom face part 50 is shown to Fig.18 (a). FIG. 18A is an enlarged front view of the protrusions 56a and 56b as viewed from the side surface 61 side. The convex portion 62 of the streak-like top surface 60 has a shape having a flat portion extending linearly along the longitudinal direction of the protrusions 56a and 56b. The concave portion 63 of the streak-like top surface 60 has a shape curved downward along the longitudinal direction of the protrusions 56a and 56b. However, as shown in FIG. 7, the convex portion 62 of the streaked top surface 60 may be curved upward along the longitudinal direction, and the convex portion 62 and the concave portion 63 of the streaky top surface 60 are formed by the protrusions 56a, The structure which continues in a waveform along the longitudinal direction of 56b may be sufficient. In addition, about the cross-sectional shape when the protrusions 56a and 56b of the bottom face part 50 are cut | disconnected in the width direction, a shape like Fig.9 (a) may be sufficient, and it is a shape like Fig.9 (b). There may be.

  The uneven | corrugated shape of the streaky top surface 70 of the protrusion 57 in the 1st wall surface part 51a is shown by the enlarged view in FIG.18 (b). FIG. 18B is an enlarged front view of the ridge 57 viewed from the side surface 71 side. The concavo-convex shape of the streak-like top surface 70 of the ridge 57 in the first wall surface portion 51 a has directivity along the longitudinal direction of the ridge 57 and is a vertically asymmetric shape. The convex portion 72 of the streak-like top surface 70 has a triangular shape in a front view when the protrusion 57 is viewed from the side surface 71 side, and the concave portion 73 of the streaky top surface 70 has an inverted triangular shape in the same front view. The convex portion 72 and the concave portion 73 of the streaky top surface 70 have a continuous saw blade shape. The lower slope 72a of the convex portion 72 of the streak-like top surface 70 is a gentle slope, and the upper slope 72b is a steep slope that is nearly vertical. In addition, about the cross-sectional shape when the protrusion 57 of the 1st wall surface part 51a is cut | disconnected in the width direction, a shape like Fig.9 (a) may be sufficient, and a shape like FIG.9 (b). It may be.

  The lid 41 has a shape corresponding to the container main body 40 and is rectangular in plan view as a whole in this embodiment, and its opening faces the opening of the container main body 40 in the closed state. The lid 41 includes a top surface portion 80, a lid side surface portion 81 that descends from the peripheral portion of the top surface portion 80, and a lid flange portion 82 that extends outward from the lower end portion of the lid side surface portion 81. Yes. Similarly to the main body flange portion 52, the cover flange portion 82 also has a long side and a short side, and a hinge portion 42 is formed between the long side main body flange portion 52 and the long side lid flange portion 82. . The hinge portion 42 can have various shapes, for example, a circular arc shape or a U-shaped cross section. The top surface portion 80 of the lid 41 is preferably inclined with respect to the lid flange portion 82. The inclination direction of the top surface portion 80 of the lid 41 is preferably equal to the inclination direction of the bottom surface portion 50 of the container body 40 in the opened state as shown in FIG. Therefore, it is preferable that the distance between the top surface portion 80 and the lid flange portion 82 increases as the distance from the hinge portion 42 increases. However, in the present embodiment, the distance becomes the longest in the middle portion away from the hinge portion 42. From there, it gradually becomes shorter toward the end opposite to the hinge portion 42.

  In the present embodiment, a structure in which the lid flange portion 82 is fitted to the outside of the main body flange portion 52 is employed. Therefore, the main body flange portion 52 includes an upper horizontal portion 52a extending substantially horizontally outward from the upper end portion of the main body side surface portion, and a fitting wall portion 52b extending substantially vertically from the outer edge portion of the upper horizontal portion 52a downward. And a lower horizontal portion 52c extending substantially horizontally from the lower end portion of the fitting wall portion 52b toward the outside. Engagement projections 52d project outwardly from predetermined locations on the outer surface of the fitting wall 52b.

  The lid flange portion 82 corresponds to the main body flange portion 52, and extends upward from the lower end portion of the lid side surface portion 81 substantially horizontally, and toward the lower side from the outer edge portion of the upper horizontal portion 82a. The fitting wall portion 82b extends substantially vertically, and the lower horizontal portion 82c extends substantially horizontally from the lower end portion of the fitting wall portion 82b toward the outside. Engagement projections 82d protrude inward at predetermined locations on the inner surface of the fitting wall portion 82b.

  In the closed state, the upper horizontal portion 82a of the lid flange portion 82 is positioned on the upper side of the upper horizontal portion 52a of the main body flange portion 52, and the lid flange portion 82 is located outside the fitting wall portion 52b of the main body flange portion 52. The fitting wall portion 82b is opposed to the lower horizontal portion 52c of the main body flange portion 82, and the lower horizontal portion 82c of the lid flange portion 82 is positioned so as to overlap. Then, the engagement projection 82d of the lid flange portion 82 is engaged with the lower side of the engagement projection 52d of the main body flange portion 52, whereby the closed state is maintained. The hinge portion 42 is formed between the lower horizontal portion 52 c of the main body flange portion 52 and the lower horizontal portion 82 c of the lid flange portion 82.

  When such a fitting structure is adopted, knobs 52e are respectively provided at both corners of the main body flange 52 and the lid flange 82 which are located on the opening side opposite to the hinge 42. , 82e are preferably formed. These knobs 52e and 82e are preferably subjected to various anti-slip processing.

  However, it is not a so-called external fitting configuration in which the fitting wall portion 82b of the lid 41 is fitted to the outside of the fitting wall portion 52b of the container body 40, and the lid 41 is placed inside the fitting wall portion of the container body 40. A so-called inner fitting configuration in which the fitting wall portion is fitted may be used. Further, without using such a fitting structure, the main body flange portion 52 and the lid flange portion 82 are simply configured to overlap each other and maintain the closed state with various adhesive tapes, rubber bands, or the like. Also good.

  It is preferable to provide substantially horizontal edge portions 52f and 82f on the peripheral edge portion of the main body flange portion 52 excluding the hinge portion 42 and the peripheral edge portion of the lid flange portion 82. The edge portions 52f and 82f are preferably formed by forming fine unevenness and embossing on the upper surface and lower surface of the sheet at the same time as thermoforming, and particularly when the sheet end surface is enlarged to the front. In some cases, a waveform shape such as a sine wave, a triangular wave, or a trapezoidal wave is preferable. The edge surfaces of the edge portions 52f and 82f are the outer edges of the container and are sheet cutting surfaces cut by a cutting blade during sheet forming. By forming an uneven shape on the surface of the sheet at the edge portions 52f and 82f, the sheet is cut. When the surface is magnified to the front, it has a wavy shape that snakes up and down. Therefore, the outer edge of the container is not sharp, and cutting at that portion can be prevented. Also in this sense, it is preferable to form the edge portions 52f and 82f having an uneven shape on the surface on the entire circumference of the container excluding the hinge portion 42. In addition, the uneven shape also exhibits an anti-slip function.

  Note that the upper container body 40 or the lid 41 is placed on the upper end part of the main body side surface part and the lower end part of the lid side surface part 81 when the container main bodies 40 or the lids 41 are overlapped in the open state. It is preferable to form the anti-blocking protrusions 58 and 88 for preventing a phenomenon (blocking phenomenon) in which the container body 40 or the lid 41 on the side is tightly fitted and cannot be separated. The blocking preventing projections 58 and 88 are formed at a plurality of positions at intervals in the circulation direction, and the arrangement thereof is not equal, and the positions of the container main body 40 and the lid 41 are shifted in the rotation direction. In this way, it is formed.

  Further, when the containers in the closed state are stacked up and down in a horizontally placed state, a convex portion 83 for preventing lateral displacement between the containers is provided on the outer surface of the top surface portion 80 of the lid 41 so as to protrude upward. It is preferable to do. And it is preferable to make the recessed part 59 which carries out the uneven | corrugated engagement with the convex part 83 of the cover 41 in the outer surface of the bottom face part 50 of the container main body 40. The container body 40 and the lid 41 may be provided with various reinforcing ribs.

  The container with the hinge part 42 configured as described above contains the food T inside and is in a closed state. However, as shown in FIGS. Both vertical usage states as shown in FIG. 17 are possible. In the horizontally placed state, the bottom surface portion 50 is down and serves as a food placing surface, and the food T is placed on the protrusions 56a and 56b of the bottom surface portion 50 as shown in FIG.

  In the vertically placed state, the first wall surface portion 51a is down and serves as a food placing surface, and the food T is placed on the protrusion 57 of the first wall surface portion 51a as shown in FIG. In the vertically placed state, the hinge portion 42, the boundary portion between the bottom surface portion 50 and the first wall surface portion 51a, that is, the end portion 50a on the hinge portion 42 side is grounded to support the container. In the vertically placed state, the first wall surface portion 51a is not horizontal and is inclined such that the main body flange portion 52 side is on the upper side. In the vertically placed state, the bottom surface portion 50 is inclined with respect to the vertical state at an angle of less than 45 degrees toward the side opposite to the lid 41, that is, the rear side. However, the bottom surface portion 50 may be in a substantially vertical posture in a vertically placed state. In such a vertically placed state, as shown in FIG. 17, the food T is placed on the ridge 57 of the first wall surface portion 51 a, but the food T is also applied to the ridges 56 a and 56 b of the bottom surface portion 50. It comes into contact with the protrusions 56a and 56b of the bottom surface portion 50 and leans. In this way, when the bottom surface portion 50 is tilted rearward in the vertically placed state, the stored food T can be leaned against the ridges 56a and 56b of the bottom surface portion 50, and the food T is covered with the lid 41. It becomes difficult to touch. Accordingly, the food T is well drained and drained, the stickiness of the food T can be prevented and its taste can be maintained, and the appearance of the food T seen through the lid 41 is also good.

  Further, in the vertically placed state, since the unevenness is formed on the streaky top surface 70 of the protrusion 57 of the first wall surface portion 51a, the unevenness functions as a non-slip, and the position shift of the food T is prevented. Good appearance in the display state is maintained. In particular, since the slope 72b on the upper side of the convex portion 72 of the streak-like top surface 70 is a steep slope, even if the first wall surface portion 51a is inclined so as to descend toward the bottom surface portion 50, the convex portion 72 The upper inclined surface 72b becomes a catch, and the position shift of the food T toward the bottom surface 50 is effectively prevented. Further, the misalignment of the food T is also prevented by the unevenness of the streaky top surface 60 of the protrusions 56a and 56b of the bottom surface portion 50. In particular, since the downward movement of the food T is suppressed by the unevenness of the streaky top surface 60 of the protrusions 56a and 56b of the bottom surface portion 50, the vertical deformation of the vertically placed food T is prevented.

  The protrusions 56a, 56b, and 57 are formed on both the bottom surface portion 50 and the first wall surface portion 51a, but the protrusions 56a and 56b are formed only on the bottom surface portion 50, or the first wall surface portion. The protrusion 57 may be formed only on 51a. The configuration in which the protrusions 56a and 56b are formed only on the bottom surface portion 50 is suitable for horizontal use, and the configuration in which the protrusion 57 is formed only on the first wall surface portion 51a is suitable for vertical use. .

DESCRIPTION OF SYMBOLS 1 Bottom part 2 Side part 3 Flange part 4 Edge part 5 Height part 5a Side surface 5b Step part 6 Groove part 7 Leg part 8 Fitting part 10a First protrusion 10b Second protrusion 11 Shoulder part 12 Side face 13 Valley part 13a Center part 13b in the longitudinal direction End part 20 in the longitudinal direction 20 Streaky top surface 21 Convex part 22 Concave part 30 Convex 40 Container body 41 Lid 42 Hinge part 50 Bottom part 50a Hinge part side end 50b Anti-hinge part side end 51a First wall surface portion (main body side surface, side surface)
51b 2nd wall surface part (body side part, side part)
51c 3rd wall surface part (body side part, side part)
51d Fourth wall surface portion (main body side surface, side surface)
52 Body flange (flange)
52a Upper horizontal portion 52b Fitting wall portion 52c Lower horizontal portion 52d Engaging projection 52e Knob portion 52f Edge portion 53 Recessed portion 54 Protruding portion 55 Rib 56a Projection strip 56b at both ends Center-side projection strip 57 Projection strip 58 Blocking prevention projection 59 A concave portion 60 for preventing misalignment 60 A streaky top surface 61 A side surface 62 A convex portion on a streaky top surface 63 A concave portion on a streaky top surface 70 A streaky top surface 71 A side surface 72 A convex portion 72a on a streaky top surface A lower slope 72b Upper slope 73 Recessed portion 80 on the top surface Top surface portion 81 Side surface portion of the lid (side surface portion)
82 Lid flange portion 82a Upper horizontal portion 82b Fitting wall portion 82c Lower horizontal portion 82d Engaging projection 82e Knob portion 82f Edge portion 83 Protrusion portion 88 for preventing misalignment Anti-blocking projection portion 100 Horizontal surface T Food T1 End portion

Claims (5)

A plurality of ridges extending in a streak shape while being spaced apart from each other on the inner surface of the container, a food packaging container in which food is placed on the streaky top surface of the plurality of ridges,
A food packaging container, wherein irregularities are formed on the streaky top surface of the ridge. The container main body and the lid are integrally formed via the hinge part, and the container body located between the hinge part and the bottom part is used in a horizontal manner in which the bottom part of the container main body is the food placing surface. It is a food packaging container that can be used for both of the vertically placed usage modes in which the side portion is the food placement surface,
A plurality of protrusions extending in a streak shape are provided on the inner surface side of the container body at the bottom surface portion and the side surface portion, with a space between each other.
A container for food packaging, wherein irregularities are respectively formed on the streaky top surface of the ridges on the bottom surface of the container body and the streaky top surface of the ridges on the side surface of the container body.   The container for food packaging according to claim 1 or 2, wherein irregularities are repeatedly formed in the longitudinal direction of the ridge.   The container for food packaging according to any one of claims 1 to 3, wherein the concave portion constituting the irregularities on the streaky top surface of the ridge crosses the streaky top surface of the ridge.   The convex portions constituting the ridges of the ridges are curved toward the ridges along the longitudinal direction of the ridges, and the ridges are formed along the width of the ridges. The food packaging container according to any one of claims 1 to 4, which is curved toward the top surface side.

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