JP2018172166A - Container for packaging - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a container for packaging which has rigidity and can perform packaging with good appearance.SOLUTION: In a container for packaging which comprises a side face portion which can be erected, the side face portion comprises: a smoothing portion 321 which is provided so as to be deviated to the inside of the container and is formed smoothly; and a step formation portion 322 which is provided on the smoothing portion 321 and forms a step between the side face portion and the smoothing portion 321. Preferably, the container for packaging further comprises a frame portion which partitions a part of a region of the side face portion. The smoothing portion 321 is provided to a part of the side face portion so as to be deviated to the inside of the container compared with the frame portion. The step formation portion 322 is provided around the smoothing portion 321, and the step is formed between the frame portion and the smoothing portion.SELECTED DRAWING: Figure 6

Description

  The present invention relates to the structure of a plastic packaging container.

  Conventionally, plastic packaging containers are used for packaging food items such as sugar beet. A conventional packaging container 90 shown in FIG. 14 includes a container main body 91 and a lid 92 covering the container main body 91.

  In the packaging container 90, the container body 91 is provided at a shallow bottom, and the lid body 92 is higher than the height (HB ′) of the container body 91 (HB ′ <HL ′). A top surface portion 92A is provided above and away from the mouth. Furthermore, the lid body 92 includes a side surface portion 92B that rises so as to enclose the food that appears above the mouth of the container main body 91 in a covered state, and the top surface portion 92A is connected to the end of the side surface portion 92B. In addition, a plurality of ribs 93 are provided on the lid 92 to give rigidity. Each rib 93 extends in a streak shape from the center side of the top surface portion 92A to the lower end of the side surface portion 92B, and a plurality of ribs 93 are provided at a distance so as not to cross each other. The plurality of ribs 93 in the illustrated example are arranged side by side so as to be adjacent at a narrow interval. By providing such ribs 93, it is possible to use a thin plastic sheet material for manufacturing the packaging container 90, and it is possible to stack at the time of display.

Japanese Patent Laying-Open No. 2017-30843 (FIGS. 6A and 7)

  Of the side surface portion 92B, the cross-sectional shape of the region where the plurality of ribs 93 are arranged is curved. For this reason, when the food product is put in the packaging container 90 and displayed on the counter of the supermarket, if the lid 92 is configured to be transparent, the plurality of ribs 93 prevent the customer's direct view of the food product from being packaged. It will distort the form of food. In particular, in the state where the packaging containers are stacked, the customer confirms the food product through the front surface portion 92F of the lid 93 mainly facing the front in the lower packaging container. The effect of lowering is great.

  In addition, when the lid is configured by laminating a film, such a rib may deform a pattern or the like attached to the laminate and reduce the appearance of the packaging container. .

  In order to eliminate such a situation, it is conceivable to omit the ribs, but if the ribs are not provided, the rigidity is inferior, and for example, it is not possible to withstand the load during stacking. Such a problem is not limited to food, but is the same when other items are included as contents.

  An object of the present invention is to provide a packaging container that can be packaged with good appearance while having rigidity.

  In order to solve the above-mentioned problems, the present invention is a packaging container provided with at least one of a top surface portion and a rising side surface portion (hereinafter referred to as an outer wall portion), and the outer wall portion is disposed outside or inside the container. A non-concave portion that is provided in a staggered manner and is formed smoothly, and a step forming portion that forms a step between the outer wall portion and the non-concave portion, and at least a part of the step, The connection between the outer wall portion and the non-concave portion and the step forming portion is formed by a curved surface. For example, in the case of a packaging container having a side part, the step forming part is provided so as to extend laterally on the smooth part, and a part or the whole of the step forming part is part of the side part and the non-concave part. The connection between the portion and the step forming portion is formed by a curved surface.

  The packaging container of the present invention further includes a frame portion that defines a partial region of the outer wall portion, wherein the non-concave portion is provided in a part of the outer wall portion, and the step forming portion is not A step is formed around the concavo-convex portion, and a step is formed between the frame portion and the non-concave portion.

  According to the present invention, the food product can be packaged with good appearance, and the rigidity of the packaging container can be ensured.

(A) is a perspective view which shows the packaging container of 1st Embodiment of this invention, (b) is an enlarged perspective view of the periphery which the arrow Y1 points out with the packaging container of (a). (A) And (b) is the front view and back view which show the container for packaging of 1st Embodiment of this invention. It is a left view which shows the container for packaging of 1st Embodiment of this invention. (A) And (b) is the top view and bottom view which show the packaging container of 1st Embodiment of this invention. (A) is an expanded view of the packaging container of 1st Embodiment of this invention, (b) is sectional drawing of the packaging container along the D1-D1 line of (a). (A) And (b) is sectional drawing of the container for packaging along the A1-A1 line and B1-B1 line | wire of Fig.2 (a). (A) is sectional drawing of the packaging container along the C1-C1 line | wire of FIG. 3, (b) is a fragmentary perspective view of the periphery which the arrow Y2 points out with the packaging container of (a). (A)-(d) is a figure for demonstrating the structure of the cover body of 1st Embodiment of this invention. FIG. 6A is a partially enlarged view of the periphery indicated by an arrow Y3 in the packaging container of FIG. 6A, and FIG. 6B is a partially enlarged view of the periphery indicated by an arrow Y4 of the packaging container of FIG. (C) is a figure which shows the other structural example of a level | step difference formation part. It is a left view of the packaging container which shows the use condition of 1st Embodiment of this invention. (A) And (b) is the perspective view and front view which show the packaging container of the 1st modification of 1st Embodiment of this invention. (A) And (b) is the perspective view and left view which show the packaging container of the 2nd modification of 1st Embodiment of this invention. (A) is a front view which shows the container for packaging of 2nd Embodiment of this invention, (b) is sectional drawing of the container main body along the E1-E1 line of (a). It is a front view of the conventional packaging container.

(First embodiment)
Fig.1 (a) is a perspective view which shows the container 1 for packaging of 1st Embodiment of this invention. 2A and 2B are a front view and a rear view of the packaging container 1, FIG. 3 is a left side view of the packaging container 1, and FIGS. 4A and 4B are packaging. It is the top view and bottom view of container 1 for an operation. The right side view of the packaging container 1 appears symmetrically with the left side view.

  The packaging container 1 includes a container main body 10 and a lid body 30 attached to the container main body 10 via a hinge portion 20, and the lid body 30 extends over the container main body 10 in FIGS. 1 to 3. The state which has rotated and has closed the opening | mouth of the container main body 10 is shown. FIG. 5A is a development view in which the packaging container 1 is expanded so that the lid 30 is arranged next to the container body 10.

  6A is a cross-sectional view of the packaging container 1 along the line A1-A1 in FIG. 2A, and FIG. 7A is a sectional view of the packaging container 1 along the line C1-C1 in FIG. It is sectional drawing.

  The container body 10 includes a bottom 11 that extends horizontally, a side surface 12 that forms a mouth that rises from the periphery of the bottom 11 and opens above the bottom 11, a body flange 13 that protrudes outward around the mouth, It has.

(Container body)
The bottom part 11 is provided with the mounting part 111 which mounts foodstuffs, and the leg part 112 formed so that it might protrude below the mounting part 111. FIG. The leg portions 112 are provided at a distance around the placement portion 111, and are provided at the four corners in the region of the bottom portion 11 formed in a horizontally long rectangular shape in plan view. The container main body 10 holds the mounting portion 111 at a high position in a state where the container main body 10 is placed on the landing surface such as a counter or a shelf by the legs 112.

  The mounting portion 111 is a region where the leg portion 112 is removed from the bottom portion 11, and in this region, as shown in FIG. 6A, an inner portion 111 </ b> A provided on the inner side is provided before and after the step. It is provided at a position higher than the outer portion 111B.

  The inner portion 111A is formed in a horizontally long shape, and includes a plurality of mounting convex portions 15 except for the left and right end sides as shown in FIG. FIG. 7B is an enlarged view of the periphery indicated by the arrow Y2 in FIG. 7A, and each mounting convex portion 15 extends to the innermost portion 111A from the top portion 151 that protrudes most inside the container. The side part 152 is provided and protrudes upwards. For example, the outline in plan view shown in FIG. 5A is a rectangular shape, and is formed at a height of about 2 to 4 mm from the placement portion 111, and the placement convex portions 15 are front and rear, left and right at equal intervals. It is arranged to line up. In addition, the shape, dimension, and arrangement of the mounting convex portions 15 are not limited to the illustrated example, and other mounting convex portions 15 may be provided. The outer portion 111B also has a plurality of placement convex portions 15.

  Further, the bottom portion 11 is a convex portion (hereinafter referred to as a convex portion 17 for stacking) used when stacking the packaging containers 1 on the inner portion 111A of the mounting portion 111 as shown in FIG. It is provided close to the left and right ends.

  The left and right stacking convex portions 17 are formed so as to protrude downward (outside the container) from the inner portion 111 </ b> A, and as shown in FIG. 7B, a top portion 171 that projects outward, and an inner portion from the top portion 171. And a side surface portion 172 extending to 111A. In FIG. 7A, the leg portion 112 is indicated by a one-dot chain line, and the height hf1 of the stacking convex portion 17 is set lower than the leg portion 112 (height hf2) (hf2> hf1). The height hf1 of the stacking convex portion 17 is 2 to 4 mm. The shape, dimensions, arrangement, and number of the stacking projections 17 are not limited, and other stacking projections 17 may be provided.

  The side surface portion 12 rises from the periphery of the bottom portion 11, and forms a mouth 100 that is open above the bottom portion 11 with the upper ends aligned. As shown in FIG. 5B, the side surface portion 12 is provided with the placement portion 111 at a shallow position, and the dimension hc from the mouth 100 to the placement portion 111 is the height of the side surface portion 32 of the lid 30 described later. Although it is set to be smaller than the length hr, the placement unit 111 may be provided at a deep position.

  As shown in FIG. 5B, the main body flange portion 13 includes a folded portion 131 that extends from the upper end of the side surface portion 12 and an edge forming portion 132 that extends outward from the folded portion 131. The surface constituting the edge forming portion 132 is formed in a concavo-convex shape by providing a plurality of streaks and granular convex portions although illustration is omitted.

(Lid)
As shown in FIGS. 3 and 4, the lid 30 has a top surface portion 31 that extends above the bottom portion 11, a side surface portion 32 that extends downward from the periphery of the top surface portion 31, and an outer side from the end of the side surface portion 32. And an extended lid flange portion 33.

  The top surface portion 31 includes a bottom contact portion 311 that contacts the bottom portion 11 of the other packaging container 1 when stacked, and a rear leg that is held at a position lower than the bottom contact portion 311 on the rear side of the bottom contact portion 311. And a slope portion 313 that forms a step between the bottom contact portion 311 and the rear leg facing portion 312.

  The bottom abutting portion 311 is formed as a horizontally long region in a plan view. In FIG. 4A, the periphery of the bottom abutting portion 311 is represented by a solid line, the front edge 311F and the rear edge 311B extend left and right, and the left edge 311L. And the right edge 311R are set shorter than the front edge 311F and the rear edge 311B and extend in the front-rear direction. In the illustrated example, the bottom abutting portion 311 is formed in a curved surface that lowers as the front side and the rear side go outward, and the rear edge 311B extends in a bow shape by inflating the middle portion rearward.

  Further, the bottom abutting portion 311 is provided with a concave portion that is recessed downward (hereinafter referred to as a stack concave portion 37). Here, FIG. 1B is an enlarged perspective view of the periphery indicated by the arrow Y1 in FIG. 1A, and the stacking concave portion 37 is one of the bottom contact portions 311 adjacent to the left edge 311L thereof. The hole bottom 371 (deepest part) entering the innermost side and the hole side surface 372 extending from the hole bottom 371 to the bottom contact part 311 are provided. The hole bottom 371 is formed as a rectangular region, and is provided so that one edge 371A of the peripheral edge appears outside, and the hole side surface 372 extends from the remaining edge 371B. 4A, the edge 371A is provided so as to be shifted inward from the left edge 311L of the bottom contact portion 311, and the hole bottom 371 is formed from the mouth portion 311A of the top surface portion 31 opened above the edge 371A. It is formed small. In addition, the lid 30 is provided with a similar stack recess 37 by lowering a part of the bottom contact portion 311 adjacent to the right edge 311R.

  The slope portion 313 extends downward from the rear edge 311B of the bottom contact portion 311. A portion where the top surface portion 31 and the slope portion 313 are connected is formed of a curved surface.

  The two rear leg facing portions 312 extend outward from the lower end of the slope portion 313, and are lined up on the left and right behind the rear edge 311B of the bottom contact portion 311 in a plan view, and in the middle of the longitudinal direction of the rear edge 311B. They are placed symmetrically on the border. Each rear leg facing portion 312 is formed as a triangular region in plan view, and one corner is adjacent or close, and the other side is arranged in a straight line, and the rear edge of the top surface portion 31 is formed. Forming. Two rear leg facing portions 312 are disposed behind the rear edge 311B of the bottom contact portion 311 and together with the bottom contact portion 311, the contour of the top surface portion 31 in plan view is formed in a horizontally long rectangular shape.

  As shown in FIG. 4A, the side surface portion 32 extends downward from the rectangular edge of the top surface portion 31, and faces the front surface portion 32F facing the front, the rear surface portion 32B facing the rear, and the left side. A left surface portion 32L and a right surface portion 32R facing right are provided. The front surface portion 32F, the rear surface portion 32B, the left surface portion 32L, and the right surface portion 32R constitute a mouth 300 that is opened downward with the heights of the lower ends thereof aligned.

  A reinforcing portion 38 is provided around the mouth 300. As shown in FIGS. 5B and 6A, the reinforcing portion 38 includes a laterally extending portion 381 extending laterally from the lower end of the side surface portion 32, and a longitudinally extending portion 382 extending downward from the end thereof. The corners projecting outward are provided.

  The lid flange portion 33 is provided around the reinforcing portion 38. As shown in FIGS. 5B and 6A, a laterally extending portion 331 extending outward from the reinforcing portion 38 and a laterally extending portion are provided. An attachment portion 332 extending from the portion 331 and an edge forming portion 333 extending from the attachment portion 332 are provided. The edge forming portion 333 is provided except for a portion of the adherend portion 332 where the hinge portion 20 is provided. The lid flange portion 33 is configured such that the adherend portion 332 covers the main body flange portion 13 of the container body 10 and the main body flange portion 13 fits on the inner surface of the adherend portion 332 as an external fitting structure. The surface forming the edge forming portion 333 is formed in a concavo-convex shape by providing a plurality of streaks and granular convex portions although not shown.

  The lid flange portion 33 is provided at a position lower than the side surface portion 32, and the side surface portion 32 provided in the central region inside the lid flange portion 33 rises from the reinforcing portion 38 so as to restrict the upper portion, and the front surface portion 32F and the rear surface portion. 32B, the left surface portion 32L, and the right surface portion 32R are inclined inward. The lid 30 includes a skeleton that supports a central region formed so as to protrude upward.

  FIGS. 8A and 8B are diagrams for explaining the configuration of the lid 30, in which the skeleton is represented by bold lines, the others are represented by broken lines, (a) is a plan view, (b) is a front view, c) is a rear view, and (d) is a left side view. The lid body 30 includes, as a skeleton, a longitudinal bone portion that extends in the vertical direction and a lateral bone portion that extends in the horizontal direction and the front-rear direction.

  The longitudinal bone portion is formed by connecting adjacent ones of the front surface portion 32F, the rear surface portion 32B, the left surface portion 32L, and the right surface portion 32R, and projects outward, and extends vertically (hereinafter, the respective symbols are denoted by 301FL and 301FR). , 301BL, 301BR). The vertical bone portions 301FL, 301FR, 301BL, and 301BR are formed so as to be inclined inward by shifting their positions so that their upper and lower portions do not line up and down. Further, in the left side view of FIG. 8D, the front longitudinal bone portion 301FL is inclined so that the angle with respect to the horizontal plane is set smaller than that of the rear longitudinal bone portion 301BL, and falls greatly inward. In addition, each of the longitudinal bone portions 301FL, 301FR, 301BL, and 301BR is formed in an arc shape as shown in FIG. The front longitudinal bone portions 301FL and 301FR are formed so that, for example, the radius of curvature increases as it decreases, and the lower portion is wider than the upper portion.

  The horizontal bone portion is configured by connecting the top surface portion 31, the front surface portion 32F, the rear surface portion 32B, the left surface portion 32L, and the right surface portion 32R, and extends horizontally (hereinafter, the respective reference numerals are denoted by 302F, 302B, and 302L). , 302R).

  Among the horizontal bone portions, the front horizontal bone portion 302F connecting the top surface portion 31 and the front surface portion 32F extends in the left-right direction as shown in FIGS. 8 (a) and 8 (b). As shown in FIG. 6A, the top surface portion 31 and the front surface portion 32F are connected while being gently bent, and are formed as curved surfaces formed in an arc shape that swells outward. Further, the transverse bone portion 302F is configured to have the same longitudinal cross-sectional shape in the entire longitudinal direction except for the portion connecting to the other transverse bone portions 302L and 302R and the longitudinal bone portions 301FL and 301FR. However, the shape may be changed partially.

  The lateral bone portions 302B, 302L, and 302R on the rear surface portion 32B side, the left surface portion 32L side, and the right surface portion 32R side form corners so as to protrude outward compared to the front lateral bone portion 302F. The lateral bone portion 302B on the rear surface portion 32B side extends in the left-right direction as shown in FIGS. The lateral bone portion 302B adjacent to the left leg facing portion 312 and the lateral bone portion 302B adjacent to the right leg facing portion 312 extend so as to be aligned on an imaginary straight line at a distance. Are connected to the respective longitudinal bone portions 301BL and 301BR on the rear side. Further, a lateral bone portion 303 extending horizontally like a bow is composed of a bottom contact portion 311, a slope portion 313, and a leg facing portion 312. An inner end of the horizontal bone portion 302B is provided close to a portion that swells backward in the horizontal bone portion 303.

  On the left surface portion 32L side, the transverse bone portion 302L extends in the front-rear direction in a plan view of FIG. In the horizontal bone portion 302L, the curved surface portion extending forward from the stacking concave portion 37 is bent in an arc shape and connected to the front vertical bone portion 301FL as shown in FIG. In addition, the rear side extending rearward from the stacking concave portion 37 bends gently corresponding to the curved surface formed by the rear portion of the top surface portion 31, and further corresponds to the step formed by the rear leg facing portion 312 and the slope portion 313 on the rear side. It is bent and connected to the vertical bone 301BL. The lateral bone portion 302R configured by the right surface portion 32R and the top surface portion 31 is formed symmetrically with the lateral bone portion 302L on the left surface portion 32L side.

  In the lid body 30, the reinforcing portion 38 connected to the lower end of the side surface portion 32 functions as a horizontal bone portion. The reinforcing portion 38 includes lateral bone portions 304L and 304R extending in the front-rear direction in a plan view of FIG. 8A and lateral bone portions 304F and 304B extending in the left-right direction. The vertical bones are connected. In FIG. 8A, the reinforcing portion 38 is represented by a thick broken line.

  These vertical bone portions and horizontal bone portions divide the lid 30, and the front surface portion 32 </ b> F is provided as a horizontally long region in front view. Two longitudinal bone portions 301FL and 301FR arranged side by side at a distance on the front side and a front lateral bone portion 302F connecting the upper ends thereof define the extension of the front surface portion 32F. The front surface portion 32F is desirably formed on a smooth surface, and therefore has a reinforcing structure.

  The two longitudinal bone portions 301FL and 301FR and the front lateral bone portion 302F connecting the upper ends thereof define the side surface portion 32 as a frame portion, and the enclosed region is referred to as a “partial region of the side surface portion”. Composed. This region is provided so as to reinforce the front surface portion 32F, and as shown in FIGS. 6A and 6B, the longitudinal bone portions 301FL and 301FR and the horizontal bone portion 302F are provided in a shifted position. The smooth portion 321 is formed smoothly, and a step forming portion 322 that forms steps between the smooth portion 321 and the surrounding vertical bone portions 301FL and 301FR and the horizontal bone portion 302F.

  The gap (Δh ′) between the smooth portion 321 and the longitudinal bone portions 301FL, 301FR and the transverse bone portion 302F is, for example, 1 to 3 mm. Here, the gap Δh ′ is a distance perpendicular to the surface of the smooth portion 321 and deviated from the transverse bone portion 302F and the like, and the position before the deviation in FIGS. 6A and 6B is indicated by a one-dot chain line. ing. The smooth part 321 is formed in a rectangular shape with a horizontally long outline in a front view of the packaging container 1 in FIG. The smooth portion 321 may be provided on the lid 30 by shifting the vertical bone portions 301FL and 301FR and the horizontal bone portion 302F to the outside of the container or changing the size of the gap Δh ′.

  The height hm1 of the smooth portion 321 shown in FIG. 6A is not limited, but is, for example, 19 to 21 mm, preferably the height (hr: 28 to 28) of the side surface portion 32 in FIG. The dimension is selected to be larger than 60% of (30 mm). The width wm1 of the smooth part 321 shown in FIG. 6B is also not limited, but is, for example, 105 to 110 mm, and preferably 70% of the upper end width (wf1: 130 to 150 mm) of the front face part 32F. It is set large.

  The lid body 30 is provided with a step forming portion so as to connect the smooth portion 321 to the longitudinal bone portions 301FL, 301FR and the transverse bone portion 302F. The step forming portion is provided so as to be continuous on the top and left and right of the smooth portion 321 along the longitudinal bone portions 301FL and 301FR and the transverse bone portion 302F constituting the frame portion (hereinafter referred to as 322U, respectively). 322L and 322R are attached.)

  As shown in FIGS. 6A and 6B, the step forming portions 322U, 322L, and 322R are formed by curved surfaces in connection with the longitudinal bone portions 301FL and 301FR and the transverse bone portions 302F on the front side. . Here, FIG. 9A is a partially enlarged view of the periphery indicated by the arrow Y3 in the packaging container 1 of FIG. 6A, and the upper step forming portion 322U constitutes the horizontal bone portion 302F and the curved surface S11. The smoothing part 321 and the curved surface S12 are configured. The curved surface S11 has a radius r11 smaller than the curved surface (radius R1) of the transverse bone portion 302F. Unlike the curved surface S11, the curved surface S12 (radius r12) is formed to swell toward the inside of the container. FIG. 9B is a partially enlarged view of the periphery indicated by the arrow Y4 in the packaging container of FIG. 6B. The right step forming portion 322R constitutes the vertical bone portion 301FR and the curved surface S21, and the smooth portion 321. And a curved surface S22, and a flat surface S23 is provided between the curved surfaces S21 and S22. The curved surface S21 has a radius r21 smaller than the curved surface (radius R2) of the longitudinal bone portion 301FR. Unlike the curved surface S21, the curved surface S22 (radius r22) is formed to swell toward the inside of the container. The left step forming portion 322L is formed symmetrically with the right step forming portion 322R. In FIGS. 1A, 2A, 4A, and 5A, two-dot chain lines indicate the positions of the curved surfaces S11 to S22.

  Note that the step forming portion 322U is configured as a flat surface S13 that partially extends as shown in FIG. 9C instead of the two curved surfaces S11 and S12, and this surface S12 is connected to the transverse bone portion 302F. A corner (exit corner) C11 that exits to the outside of the container may be formed, and an angle (entrance corner) C12 that connects to the smooth portion 321 and exits to the inside of the container may be configured. The left and right step forming portions 322L and 322R may be configured as corners instead of a curved surface in a part or the whole of a portion connected to the vertical member 301FL or the like.

  In FIG. 8B, the alternate long and short dash lines L11 and L12 represent the left and right edges of the right step forming portion 322R. As shown by the edges L11 and L12, the right step forming portion 322R is In the front view, it is inclined to the side of the longitudinal bone portion 301FR adjacent thereto. Further, the step forming portion 322R provided on the right side of the smooth portion 321 is formed so that the width, that is, the interval between the edges L11 and L12 becomes wider as it becomes lower.

  The step forming portion 322U provided on the smooth portion 321 has the same height, that is, has the same cross-sectional shape except for portions connected to the step forming portions 322L and 322R provided on the left and right of the smooth portion 321.

  The height hm2 of the step forming portion 322U shown in FIG. 6A is not limited, but is, for example, 6 to 8 mm. The height hm3 of the step forming portions 322L and 322R is the height of the side surface portion 32. It is set in the same manner as (hr). The widths wm2 and wm3 of the step forming portions 322L and 322R shown in FIG. 6B are, for example, 6 to 8 mm. In the illustrated example, when the step forming portion 322U provided on the smooth portion 321 is compared with the step forming portions 322L and 322R provided on the left and right, the dimension wm3 of the right step forming portion 322R is provided with the surface S23 widely, It is set larger than the dimension hm2 of the upper step forming portion 322U, and the right step forming portion 322R is configured as an area wider than the upper step forming portion 322U. The upper step forming portion 322U is widened by providing a flat surface between the two curved surfaces S11 and S12, or formed so that the intermediate portion swells and extends upward instead of extending straight. Also good.

  As the smooth portion 321 penetrates inward from the longitudinal bone portions 301FL and 301FR, the laterally extending portion 381 of the reinforcing portion 38 extending outward from the lower end of the side surface portion 32, as shown in FIG. The portion extending outward from the smooth portion 321 is formed wider than the portion extending from the left and right longitudinal bone portions 301FL, 301FR.

  As shown in FIG. 1B, the left surface portion 32 </ b> L includes a reinforcing portion 39 that extends vertically from the top surface portion 31 to the reinforcing portion 38. The reinforcing portion 39 extends from an outer facing portion 391 that extends downward from the edge 371A that appears on the outer side of the stack concave portion 37 and faces the outer side, and from the front and rear portions of the edge that defines the stack concave portion 37. And a pair of outer extension portions 392 and 393 provided so as to extend downward and extend outward from the front and rear edges of the outer facing portion 391, respectively. These outer facing portions 391 and a pair of outer extension portions 392 and 393 are connected to each other to form a U-shape as shown in FIG. ing. The outer facing portion 391 and the pair of outer extension portions 392 and 393 are configured such that the width becomes narrower as the height decreases. In addition, the lower ends of the outer facing portion 391 and the pair of outer extending portions 392 and 393 are provided so as to penetrate into the container from the left surface portion 32L, and the laterally extending portion 381 of the reinforcing portion 38 is the lower end of the outer facing portion 391. It extends outward from.

  As shown in FIG. 8D, the reinforcing portion 39 configured as described above is provided at a distance from the longitudinal bone portions 301FL and 301BL. In the left surface portion 32L, a region from the reinforcing portion 39 to the front and rear longitudinal bone portions 301FL and 301BL is formed as a smooth surface, for example. The right surface portion 32R is formed symmetrically with the left surface portion 32L, and the reinforcing portion 39 extends downward from the right stack recessed portion 37.

(Hinge part 20)
The hinge portion 20 is provided integrally with one long edge of the container body 10 and one long edge of the lid 30. In a state in which the lid 30 is spread out so as to be aligned with the side of the container body 10, as shown in FIG. 5 (b), the hinge portion 20 has an arcuate cross section throughout, and the inner surface of the half cylinder is Although directed upward, the lid 30 can be rotated so as to fit the container body 10 by changing the shape so as to be round. The packaging container 1 is not limited to the hinge portion 20 whose cross-sectional shape is changed so as to be round, but one long edge of the container body 10 and one long edge of the lid body 30 are intermittently connected. You may provide the hinge part 20 comprised by connecting a connection part and the cutting part which is separated by the notch alternately.

  When the lid 30 is aligned with the container body 10, the folded portion 131 of the container body 10 is fitted inside the lid flange 33, so that the lid 30 is fixed to the container body 10. The container body 10 and the lid body 30 constitute a space for putting food items inside, with the lid closed in this way. The packaging container 1 may be configured to be an internal fitting type so that the lid flange portion 33 fits on the inner surface of the main body flange portion 13, or the lid 30 is separated from the container main body 10 by omitting the hinge portion 20. It may be configured.

  In the packaging container 1, the container body 10, the hinge part 20, and the lid body 30 are integrally formed of a resin material. The material is not limited, but polyolefin resin, polystyrene resin, or polyester resin can be used. At the time of molding, for example, a resin sheet material is preheated in a heater, and is then evacuated and cooled using a mold and shaped into a container shape. When the molded product is separated using the cutting device, the packaging container 1 is completed.

  The packaging container 1 is manufactured by thermally deforming a resin sheet material such as PET, and preferably has high transparency. Although the thickness of each part of the packaging container 1 after molding is not particularly limited, it is 0.05 mm to 1.0 mm. The shape and dimensions of the packaging container 1 are not limited to the sizes and ratios in the illustrated example. Note that the packaging container 1 may be configured by stacking films on the surface.

(how to use)
As shown in FIG. 5A, the food product is placed on the placement portion 111 of the container body 10 with the lid 30 aligned with the container body 10 and the mouth 100 opened. For example, it can arrange so that a part of foodstuff may appear outside from the mouth of container main part 10. The lid body 30 is rotated toward the container body 10, and the folded portion 131 of the body flange portion 13 is fitted inside the adherend portion 331 of the lid flange portion 33. In a state where the lid is thus covered, the lid 30 surrounds the food product appearing at a higher position than the container body 10 and covers the food product.

  According to the packaging container 1 of the first embodiment, unlike the conventional packaging container, the front portion 32F is not provided with the ribs 93 of the conventional packaging container 90 that are narrow and close to each other. When the body 30 has transparency, the visibility to the customer's product can be enhanced through the smooth front surface portion 32F. Further, when the lid 30 is opaque and a film is laminated and a pattern or the like is applied thereto, the smooth front surface portion 32F can avoid deformation of the pattern or the like and can be packaged with a good appearance.

  Further, when the horizontal bone portion 302F provided on the smooth portion 321 is formed in a curved surface, and the connection between the step forming portions 322U, 322L, 322R and the smooth portion 321 is formed on the curved surfaces S11, S12, etc., FIG. As shown in a), a wide area extending from the top surface portion 31 to the front surface portion 32F can be formed as a smooth surface that does not have streaks, etc. Can be displayed.

  Further, the step forming portion 322U extends laterally on the front surface portion 32F, and increases the strength of the lid 30. Further, in the front surface portion 32F, in addition to the step forming portion 322U, the step forming portions 322L, 322L extend adjacent to the smooth portion 321 so as to be continuous in the vertical direction and the horizontal direction, and the vertical bone portions 301FL, 301FR, the horizontal bone portion The reinforcing portion 39 extends in the vertical direction on the left surface portion 32L and the right surface portion 32R, and the rigidity of the lid body 30 is ensured. Since the lid body 30 is provided with rigidity in this manner, it is possible to withstand the load even when the packaging containers 1 in a state where food is put inside and the lid is further capped are stacked.

  In the stacking of the packaging containers 1, the top surface portion 31 of the lid 30 is not formed to a size that allows all the four legs 112 of the other packaging containers 1 to be mounted. Since the surface extends so as to bend over 32, the stacked state is unstable simply by placing another packaging container 1 thereon. In addition, even in conventional packaging containers where the movement of the lid cannot be restricted with the legs mounted, or in conventional packaging containers where the lid does not have a portion on which the legs are mounted, the stacked state is stably maintained. Can not do it. The packaging container 1 is provided with a stacking convex part 17 and a stacking concave part 37 into which the stacking convex part 17 is fitted as a stacking fixing part 7. FIG. 10 shows a use state in which the packaging containers 1 are stacked, and the placement portion 111 of the upper packaging container 1 is placed on the bottom contact portion 311 of the lower packaging container 1 and the upper packaging at that time. The stacking convex portion 17 of the packaging container 1 is fitted into the stacking concave portion 37 of the lower packaging container 1. Thereby, the upper packaging container 1 is fixed at an appropriate position with respect to the lower packaging container 1. Thereby, the stacked state of the packaging containers 1 can be maintained, and can be displayed on a counter, a shelf, or the like in a stable and good-looking packaging.

(First modification)
Fig.11 (a) is a perspective view which shows 1A of packaging containers of a 1st modification, FIG.11 (b) is a front view of 1A of packaging containers. In this packaging container 1A, the front surface portion 32F of the lid 30 is further provided with two vertical bone portions 301M extending vertically in the middle of the left-right direction, and the three regions are defined as regions provided by being shifted to the inside of the container. Has been. These regions also include a smooth portion 321 and a step forming portion 322 provided around the smooth portion 321. It is desirable that the vertical bone portion 301M that separates adjacent regions forms a flat surface facing the front.

(Second modification)
FIG. 12A is a perspective view showing a packaging container 1B of a second modification, and FIG. 12B is a left side view of the packaging container 1B. In the packaging container 1B, in addition to the front surface portion 32F of the lid body 30, a smooth portion 321 and a step forming portion 322 provided around the smooth portion 321 are provided on the left surface portion 32L. Although not shown in the drawings, the reinforcing portion spreading in a planar shape may be provided on the right surface portion 32R or the rear surface portion 32B, or may be provided on the top surface portion 31 as indicated by a one-dot chain line. The top surface portion 31 is not limited to a horizontal surface, and may be formed on a slope or the like indicated by a one-dot chain line in FIG.

(Second Embodiment)
FIG. 13A is a front view showing the packaging container 2 of the second embodiment. Unlike the first embodiment, the packaging container 2 has a container body 50 formed in deep drawing, and the container body 50. And a lid 60 that is detachably attached to the container body 50, and a planar reinforcing portion is provided on the container body 50. In addition, the lid 60 is represented by a two-dot chain line, and for example, a lid configured by separating the lid 30 of the first embodiment from the container body may be used.

  The container main body 50 includes a rectangular bottom 51, a side surface 52 that rises from the periphery of the container main body 50 and forms a mouth 500, and a main body flange 53 provided around the mouth 500. FIG. 13B is a cross-sectional view of the container body 50 taken along line E1-E1 of FIG. 13A, and the side surface portion 52 rises from the front and rear edges of the bottom portion 51 so as to face the front and the rear. The front surface portion 52F and the rear surface portion 52B are provided, and the front surface portion 52F further includes a smoothing portion 521 provided to be shifted inward so as to form a planar reinforcing portion, and the smoothing portion 521 and the front surface portion 52F. A step forming portion 522 that forms a step therebetween.

  Similarly to the first embodiment, the packaging container 2 can improve the visibility of the contents while securing rigidity by the planar reinforcing portion.

  The present invention is not limited to the above description and illustrated examples, and the packaging container 1 includes the reinforcing portion 38 below the side surface portion 32. However, such a lateral bone portion may be omitted or the side surface portion may be omitted. The vertical bone portion provided on 32 and the vertical bone portion extending vertically in the side surface portion 32 or the like may be omitted. For example, a smooth portion shifted outward may be provided on a hemispherical round curved surface. Good. The smooth portion may be provided apart from the longitudinal bone portion and the lateral bone portion. For example, in the packaging container 1A of FIG. 11B, the smooth portion 321 near the left end and the step forming portion 322 are omitted from the three smooth portions 321 arranged side by side, and from the smooth portion 321 on the center side to the left end. You may comprise as a smooth surface. Further, the smoothing unit 321 is not limited to a rectangular region, and may be configured as a circular, triangular, or other shape region. The shape of the step forming portion 322 may be changed. For example, lines L11 and L12 that form edges of the step forming portion 322R and the like with the lid 30 shown in FIG. 8B are shown in FIG. 13A. As shown by lines L11 and L12, they may be provided so as to be shifted outward as they are lowered, or they may extend straight vertically in a front view although illustration is omitted. The stacking fixing portion 7 may be configured by providing a convex portion protruding upward on the top surface portion 31 side and providing a concave portion that is recessed toward the inside of the container and into which the convex portion of the top surface portion 31 fits on the placement portion 11 side. it can. The reinforcing portion 39 (FIG. 1 (b)) adjacent to the fixing portion 7 may be configured to project outward from the container, or may be provided apart from the fixing portion 7. The position where the fixing portion 7 is provided may be another edge instead of the left and right edges 311L and 311R.

  In the first embodiment, the smooth portion 321 is provided on the side surface portion 32 as the outer wall portion constituting the outer shape of the packaging container 1. However, the smooth portion 321 is replaced by the top surface portion instead of the side surface portion 32 in the outer wall portion. May be provided only. The top surface portion is not limited to the one provided on the side surface portion and held at a position higher than the mouth of the container main body, but is a lid formed by reducing the height of the side surface portion or without providing the side surface portion. If it exists, the thing which adjoins the opening | mouth of a container main body or penetrate | invades into a container inside and is provided facing the bottom part is also included. Further, in the above description, the non-concave portion configured as a smooth surface is formed flat as the smooth portion 321, but the non-concave portion is formed as a smooth curved surface that swells to the outside of the container or the inside of the container. May be.

1, 1A, 1B, 2 Packaging container 7 Fixing part 10, 50 Container body 100 Mouth 11, 51 Bottom part 111 Mounting part 112 Leg part 12, 52 Side part 13, 53 Body flange part 15 Mounting convex part 17 Stack Protruding portion 20 Hinge portion 30, 60 Lid 300 Port 31 Top surface portion 311 Bottom contact portion 312 Rear leg facing portion 32 Side surface portion 32F Front surface portion 32B Rear surface portion 32L Left surface portion 32R Right surface portion 33 Cover flange portion 37 Recessed portion 38 for stacking Reinforcing part 321 Smoothing part 322 Step forming part

Claims (7)

A packaging container having at least one of a top surface portion and a rising side surface portion (hereinafter referred to as an outer wall portion),
The outer wall portion is provided to be shifted to the outside of the container or the inside of the container and formed on a smooth surface, and a step forming portion that forms a step between the outer wall portion and the non-uneven portion, With
The packaging container, wherein at least a part of the step, the connection between the outer wall portion, the non-concave portion, and the step forming portion is formed by a curved surface. It further comprises a frame section that divides a part of the outer wall section,
The non-recessed portion is provided on a part of the outer wall portion, and the step forming portion is provided around the non-recessed portion to form a step between the frame portion and the non-recessed portion. The packaging container according to claim 1, wherein: The packaging container includes a container body having an opening above the bottom, and a lid that covers the mouth of the container body,
The packaging container according to claim 1 or 2, wherein the lid body includes the outer wall portion projecting upward from the mouth of the container main body. The lid body includes the top surface portion and the side surface portion extending downward from the periphery of the top surface portion,
The packaging container according to claim 3, wherein the connection between the top surface portion and the side surface portion is a curved surface at a part of the peripheral edge. A container body having a placing portion for placing an article, and a lid for closing a mouth opened above the placing portion, and a packaging container that can be stacked in a covered state,
A bottom abutting portion which is provided on the lid and is stacked when the other packaging containers are stacked, and a top abutting portion of the other packaging containers stacked on the bottom abutting portion. A packaging container, comprising: a fixing portion that fixes the portion.   The packaging container according to claim 5, wherein the container body includes a leg portion that holds the placement portion away from a landing surface such as a counter or a shelf. The fixing portion includes a convex portion that protrudes from the placement portion to the outside of the container and is formed lower than the leg portion, and a concave portion that is recessed from the bottom contact portion to the inside of the container,
The packaging container according to claim 6, wherein when the plurality of packaging containers are stacked, the convex part of the upper packaging container fits into the concave part of the lower packaging container.

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