JP7351497B2 - packaging containers - Google Patents

Description

The present invention relates to a packaging container that accommodates foodstuffs and the like and is made easy to lift.

At retail stores, bento boxes and side dishes are sold packaged in thin-walled plastic containers. Some containers, such as bento boxes and side dishes, have a part shaped into an easy-to-grasp shape so that they can be eaten straight from the container. It is also sometimes heated in a microwave oven before eating, and some containers are equipped with handles so that they can be carried while still hot.

For example, Patent Document 1 below discloses that in a packaging container manufactured by thermoforming a synthetic resin sheet, a recess for holding fingers when gripping the packaging container with one hand is provided on the outer surface of the side wall of the container. Disclosed is a packaging container that can be gripped with two hands.

Patent Document 2 below discloses that a grip part with a flange extended inward is formed at opposing positions, and a thumb rest part is formed in the vicinity of the flange part by recessing it downward, thereby making it easier to grasp the grip part. , also discloses a food packaging container in which the container is easy to lift.

Patent Document 3 below discloses that a handle that covers a person's fingers placed on the side from above is continuous with a part of the flange, and that this handle is provided with a large number of vertical ribs extending vertically and outwardly. , discloses a cup-shaped packaging container whose handle has rigidity and is easy to hold.

Japanese Patent Application Publication No. 2007-55657 Utility model registration No. 3131628 Japanese Patent Application Publication No. 2017-178374

As described above, many packaging containers made of thin resin have been developed that are designed to be easy to lift.
However, when children with small palms or women or elderly people with weak grip strength try to lift the container, there is a risk that they may fail to grasp it, causing the container to lose its balance and drop the container. In particular, when heated in a microwave oven or the like, the contents are in a high temperature state, making it difficult to grasp and increasing the risk of the container body falling. Furthermore, if hot stored items were dropped, there was a risk of burns due to the scattered stored items.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a packaging container that allows even women, children, etc. to firmly grasp the container body and to make it easy to lift.

A packaging container according to an embodiment of the present invention is a packaging container made of a thermoplastic resin sheet, and the container body includes at least a first accommodating part and a second accommodating part having a smaller capacity than the first accommodating part. The first accommodating part and the second accommodating part are separated by a partition wall , and the bottom part of the first accommodating part is located at a lower position than the bottom part of the second accommodating part, and the back side of the partition wall part can be touched with a fingertip. The side wall surface of the partition wall on the side of the first accommodating part is formed in a curved shape that expands upward from the bottom surface of the first accommodating part while bulging inside the container. Projections or grooves extending to the upper surface of the partition wall are provided in parallel at appropriate intervals on at least one of the side wall surface portion on the side of the first storage portion and the side wall surface portion on the side of the second storage portion. The container has a horizontally elongated concave shape along the opening edge of the container body, and is characterized in that it also serves as a grip portion that can be grasped from the back side of the container body.

This kind of packaging container is designed so that you can insert your fingertips into the back side of the partition wall and grasp the second storage part from the back side, so you can use the second storage part like a grip to firmly hold the container body. You can easily lift the container body.

In the packaging container of the above configuration, by forming the side wall surface portion of the partition wall portion on the first storage portion side to bulge inward of the container, a fingertip inserted from the back side of the partition wall portion can be inserted into the first storage portion side. Since it becomes difficult to touch the side wall surface part, even if the contents in the first storage part are heated by a microwave oven or the like and become hot, it is possible to make it difficult to feel the heat when lifting the container main body.

In the packaging container of the above embodiment, the opening edge of the second accommodating portion can be located below the opening edge of the container body. By doing so, it is possible to prevent the contents in the second storage section from scattering outward due to shaking when lifting the container main body.

In the packaging container of the above embodiment, protrusions or grooves may be provided in parallel at appropriate intervals on the side wall surface and the bottom surface of the second accommodating portion. As a result, the protrusions or grooves serve as ribs on the second accommodating portion, reinforcing this portion, and also becoming anti-slip, making it difficult for the fingertips to slip when gripping the container body.

In the packaging container of the above form, a flange portion projecting outward may be provided at the opening edge of the container body, and the vicinity of the second accommodating portion of the flange portion may be formed into a plane extending in the longitudinal direction of the second accommodating portion. It is preferable to form it in a straight line as seen . By doing this, the palm of the hand hits the linear flange portion when gripping the container body, making it easier to support the container body.

In the packaging container of the above embodiment, the outer edge of the flange portion can be provided with a skirt portion that projects downward. By doing this, since the hands are covered by the skirt portion when grasping the container main body, even if the contents are scattered outside the container main body, they are less likely to stick to the hands, and the hands can be protected. This can prevent burns, especially if the contents are hot.

FIG. 1 is a perspective view of a packaging container according to an embodiment of the present invention. FIG. 2 is a plan view of the packaging container shown in FIG. 1. FIG. 3 is an end view cut along the line AA in FIG. 2. FIG. FIG. 2 is a side view showing the packaging container shown in FIG. 1 and a lid fitting thereto. In the container shown in FIG. 1, it is a figure for demonstrating the area ratio in planar view of a 2nd accommodating part. 5 is a plan view of the lid shown in FIG. 4. FIG. FIG. 2 is a perspective view showing a state in which the packaging container shown in FIG. 1 is grasped and lifted by hand.

Hereinafter, one embodiment of the packaging container of the present invention will be described based on the drawings.

As shown in FIGS. 1 to 3, a packaging container 1 according to an embodiment of the present invention includes a container body 2 provided with at least a first accommodating section 3 and a second accommodating section 4. Further, as shown in FIG. 4, a lid 5 that covers the container body 2 may be provided.

The packaging container 1 can store foodstuffs such as side dishes, vegetables, salads, cooked rice, noodles, and soups, but is not particularly limited thereto. It is preferable that side foods such as side dishes and pickles are stored in the second storage section 4.

The packaging container 1 (container body 2 and lid 5) can be manufactured, for example, by thermoforming a thermoplastic resin sheet with a sheet thickness of 0.10 mm to 4.0 mm, preferably 0.15 mm to 2.5 mm. can.

The thermoplastic resin sheet is not particularly limited, and may be either a non-foamed resin sheet or a foamed resin sheet. For example, polyethylene resin sheets such as low-density polyethylene resin and high-density polyethylene resin, polypropylene resin such as homopolypropylene resin, ethylene-propylene random copolymer (random polypropylene) resin, and ethylene-propylene block copolymer (block polypropylene) resin. Polyolefin resin sheets including homopolystyrene (general-purpose polystyrene) resins, styrene-methacrylic acid copolymer resins, polystyrene resin sheets including styrene thermoplastic elastomers, polyethylene terephthalate resin sheets, polybutylene terephthalate resins , polyester resin sheets including modified polyethylene terephthalate resin sheets imparted with heat resistance, and thermoplastic resin sheets such as expanded polystyrene resin sheets.
Further, a laminated sheet can also be used as the thermoplastic resin sheet, and examples of the laminated sheet include a laminated sheet obtained by thermally laminating a film on a thermoplastic resin sheet, a laminated sheet produced by a coextrusion method, a laminated sheet produced by an extrusion lamination method, etc. can be mentioned.

Examples of thermoforming include vacuum forming, pressure forming, vacuum pressure forming, hot plate forming, and the like.

When the lid 5 is provided, the container body 2 and the lid 5 may be made of the same or different materials, but preferably the materials are the same. Further, the container body 2 and the lid 5 may be transparent, translucent, or opaque. For example, the container body 2 may be opaque and the lid 5 may be transparent or translucent.

As shown in FIGS. 1 to 4, the container body 2 is formed in the shape of a modified circular shallow bowl with an elliptical outer edge. 3 and a second storage section 4 having a small capacity. In this embodiment, two accommodating parts 3 and 4 are provided, but more accommodating parts, such as a third accommodating part and a fourth accommodating part, may be provided.
The container main body 2 includes two housing parts 3 and 4, with the inside of the opening edge 21 serving as a housing part, and the outside of the opening edge 21 includes a flange part 22 and a skirt part 23.

As shown in FIGS. 1 to 3, the flange portion 22 protrudes outward from the opening edge 21 in a substantially horizontal manner with a predetermined width, and is provided over the entire circumference of the container body 2. As shown in FIG. 2, a portion of the flange portion 22 is provided with a linear portion 22a near the second accommodating portion 4. Another straight part 22a is provided at a position facing the straight part 22a.
As shown in FIG. 3, the skirt portion 23 is formed to expand downward from the outer edge of the flange portion 22, and is provided over the entire circumference of the container body 2. Near the middle of the skirt portion 23 in the height direction, a fitting protrusion 24 that protrudes outward is provided around the entire circumference. Furthermore, as shown in FIG. 2, a tab 25 extending in the shape of a tongue is provided on the lower edge of the skirt portion 23 at an opposing position.

The first storage part 3 is a shallow bowl-shaped recess, and includes a bottom part 31 and a side wall part 32.
The bottom surface portion 31 is formed as a substantially horizontal surface having a deformed cross shape in plan view, and a groove portion 31a recessed to a predetermined depth is formed around the periphery. The groove portion 31a also serves as a leg portion on which the container body 2 is grounded when placed on a table or the like.

As shown in FIG. 2, the side wall surface portion 32 is configured such that a bulging surface 32a that bulges in a curved shape toward the inside of the container and a planar slanted surface 32b that slants while expanding upward are alternately displayed in the circumferential direction. It is formed as follows. The bulging surface 32a has a curved cross section and gradually expands upward. The bulging surface 32a on the second storage portion 4 side also serves as the partition wall portion 6.

The second accommodating portion 4 is a horizontally elongated recessed portion having an elliptical or spindle shape in plan view, and includes a bottom portion 41 and a side wall portion 42 . Further, the second accommodating portion 4 is formed along the linear portion 22a on one side of the flange portion 22 of the container body 2, and also serves as a grip portion that can be gripped from the back side of the container body 2.
The bottom surface portion 41 is a substantially horizontal surface having an oval or spindle shape in plan view, and the side wall surface portion 42 is formed into a substantially J-shaped cross section that curves upward from the bottom surface portion 41 and slopes upward. The side wall surface portion 42 on the side of the first accommodating portion 3 also serves as the partition wall portion 6.

The opening edge 43 (the top of the partition wall 6) of the second accommodating portion 4 is formed at a position lower than the opening edge 21 of the container body 2. By doing so, it is possible to prevent the stored contents in the second storage section 4 from shaking and scattering outward when the container main body 2 is lifted, and to reduce the risk of burns.

On the inner surface of the second accommodating portion 4, protrusions 44 are provided in parallel at appropriate intervals, and are arranged to traverse the inside of the bottom surface portion 41 and the side wall surface portion 42. By providing the protruding strips 44, the second accommodating portion 4 is reinforced as a rib, and also serves as a non-slippery when gripping the container body 2 from the back side. Note that the protrusions 44 may be formed into grooves, and similar effects can be obtained even in this case.

In addition, in this embodiment, the second accommodating part 4 is a concave part having an elliptical or spindle shape in plan view, but it is not limited to this, and may be configured so that it can be grasped from the back side of the container main body 2. For example, in a plan view, it may have any shape such as a rectangle, a square, a circle, a polygon such as a hexagon, or the like. Further, the boundary between the bottom surface portion 41 and the side wall surface portion 42 may be eliminated, and the cross section may be continuously formed into a semicircular or U-shaped shape.

The size of the second accommodating part 4 is not particularly limited, but the area of the entire accommodating part of the container main body 2 in a plan view (the area within the opening edge 21 painted in light black in FIG. 5(A)) is _S1 , and the area of the second storage part 4 in plan view (area inside the opening edge 43 filled in ink ink in FIG. 5(B)) is _S2 , then 0.2×S1 _≦ S. It can be formed within the range of ₂ ≦0.5×S ₁ , particularly 0.3×S ₁ ≦S ₂ ≦0.4×S ₁ , and has a size that can be grasped from the back side of the container body 2 . For example, if the capacity of the first storage section 3 is large, the size may be set to about 0.2 x S ₁ , and if the capacity of the first storage section 3 is small, the size may be set to about 0.5 x S ₁ . can.

In addition, as shown _in FIG. _{When D2 is the depth of _} . Within this range, the fingertips can be smoothly accommodated in the gap on the back side of the partition wall 6, and the second accommodating part 4 can be easily gripped from the back side.

Specifically, the size of the second accommodating portion 4 is preferably such that the vertical width is within the range of 40 mm to 100 mm, particularly 50 mm to 80 mm, and the horizontal width is within the range of 15 mm to 40 mm, particularly 20 mm to 35 mm. Further, the depth is preferably within the range of 15 mm to 30 mm, particularly 20 mm to 25 mm.

The partition wall part 6 has a triangular or trapezoidal cross section, and partitions the first accommodating part 3 and the second accommodating part 4, and also serves as a gap into which a fingertip can be inserted from the back side of the container body 2. Moreover, since the side wall surface portion 32 of the first accommodating part 3 on the second accommodating part 4 side is a bulging surface 32a that is bulged inside the container, the second accommodating part 4 is grasped from the back side of the container body 2. At this time, it becomes difficult for the fingertips to touch the side wall surface part 32, and even if the contents in the first storage part 3 are hot, the container 1 can be lifted without getting burned.

As described above, the packaging container 1 may include a lid 5 that covers the container body 2.
For example, as shown in FIGS. 4 and 6, the lid body 5 is formed into a truncated cone shape so as to be able to cover the first accommodating part 3 and the second accommodating part 4. More specifically, it includes a side wall surface portion 52 that extends downward from a circular planar top surface portion 51 and slopes linearly. A flange portion 53 is provided at the lower edge of the side wall surface portion 52 and horizontally projects outward with a predetermined width. The flange portion 53 is placed on the flange portion 22 of the container body 2 while being placed over the container body 2.
A downwardly directed skirt portion 54 is provided at the outer edge of the flange portion 53, and extends along the upper surface of the skirt portion 23 of the container body 2 when placed over the container body 2. Fitting protrusions 55 extending in the circumferential direction and protruding toward the inside of the container are formed at appropriate intervals on the skirt portion 54, and are engaged with the fitted protrusions 24 so that the lid 5 is attached to the container body 2. It is designed to fit externally. As shown in FIG. 6, the lower edge of the skirt portion 54 is provided with tabs 56 extending in the form of tongues at opposing positions. It is placed on the surface of the knob 25 of No. 2.

When lifting the packaging container 1, for example, as shown in FIG. You can grasp it as if you were squeezing it, put your thumb on the flange portion 22, and lift it up.
In this way, the packaging container 1 is shaped like a grip that can grip the second accommodating portion 4, allowing the container 1 to be firmly gripped and easily lifted.

Moreover, if the side wall surface portion 32 of the partition wall portion 6 on the side of the first accommodating portion 3 is formed into a bulging surface 32a that bulges inside the container, a gap can be created between the side wall surface portion 32 of the first accommodating portion 3 and the fingertip. Therefore, even if the contents in the first storage section 3 are heated in a microwave oven or the like, the container 1 can be lifted without worrying about the heat.

Furthermore, by providing the linear portion 22a with the flange portion 22 in a straight line near the second storage portion 4, the container 1 can be easily supported when the container 1 is lifted because the palm fits into the linear portion 22a. If the outer edge of the flange portion 22 is provided with a skirt portion 23 that protrudes downward, the skirt portion 23 will cover the palm of the hand when grasping the container body 2, so that even if the contents are scattered outside the container body 2, the palm of the hand will be covered by the skirt portion 23. It is less likely to stick to your hands and can protect your hands. This can prevent burns, especially if the contents are hot.

The configuration aspects of the embodiments described above are not listed as limiting the present invention, but can be modified as long as the technical purpose is shared, and the present invention includes such modifications.

1 Packaging container 2 Container main body 21 Opening edge 22 Flange 23 Skirt 24 Fitted protrusion 25 Knob 3 First storage part 31 Bottom part 31a Groove part 32 Side wall part 32a Bulging surface 32b Sloped surface 4 Second storage part Parts 41 Bottom part 42 Side wall part 43 Opening edge 44 Convex strip 5 Lid body 51 Top part 52 Side wall part 53 Flange part 54 Skirt part 55 Fitting protrusion 56 Knob part

Claims (4)

A packaging container made of a thermoplastic resin sheet,
The container body includes at least a first accommodating part and a second accommodating part having a smaller capacity than the first accommodating part,
The first accommodating part and the second accommodating part are separated by a partition wall part, and the bottom part of the first accommodating part is located at a lower position than the bottom part of the second accommodating part,
The back side of the partition wall portion is provided as a gap in which a fingertip can fit,
The side wall surface portion of the partition wall portion on the side of the first storage portion is formed in a curved shape that expands upward from the bottom surface portion of the first storage portion while bulging inside the container. protrusions or grooves are provided in parallel at appropriate intervals on the side wall surface portion, extending to the opening edge of the second storage portion at the border with the upper surface of the partition wall portion ;
The second storage part has a horizontally elongated concave shape along the opening edge of the container main body, and also serves as a grip part that can be grasped from the back side of the container main body,
A flange portion projecting outward is provided at the opening edge of the container body, and the outer edge of the flange portion located near the second storage portion is formed into a linear shape in plan view extending in the longitudinal direction of the second storage portion. It has been done,
Packaging containers. The packaging container according to claim 1, wherein the opening edge of the second storage portion is located below the opening edge of the container body. 3. The packaging container according to claim 1, wherein protrusions or grooves are provided in parallel at appropriate intervals on the side wall surface and the bottom surface of the second accommodating portion. The packaging container according to any one of claims 1 to 3, wherein the outer edge of the flange portion is provided with a skirt portion that projects downward.

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