JP2001139046A - Plastic container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plastic container which is excellent in stackability and capable of reducing the transport and storage cost. SOLUTION: In the plastic container 1 comprising a synthetic resin container body 10 having a bottom surface 11 and a side surface 12 erected from the periphery of this bottom surface 11 and having an opening part in an upper part thereof and a synthetic resin lid member 20 to cover the opening part, a groove 11C to stretch a band to tighten the lid member 20 with respect to the container body 10 is formed in the bottom surface 11 of the container body 10, and a projection 23 for positioning the band is provided on an upper surface side of the lid member 20. A PP band stretched over the plastic container 1 is stored in the groove 11C in the bottom surface 11, the projection 23 of the lid member 20 is protruded upward of the PP band stretched over a peripheral edge part 22, and thus, the PP band can be prevented from being interfered with each other even when the plastic containers 1 with the PP band stretched thereover are stacked.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic container and can be used, for example, as a container for shipping food such as mozuku.

[0002]

2. Description of the Related Art Conventionally, cans with a metal lid have been used for containers for shipping foods such as mozuku, and usually a polypropylene band (hereinafter referred to as a PP band) is hung in a cross shape. Packed and shipped.

[0003]

However, when the cans with lids with the crosswise PP bands are stacked and shipped as described above, the crossed PP bands are sandwiched between the stacked cans. It is also assumed that the stacked cans collide with each other and the stacked cans collapse. For this reason, considering safety and the like, there is a limit to the height of stacking, and a large amount of space is required at the time of shipping and storage, resulting in an increase in transportation costs and storage costs.

When carrying a can with a lid by hand, the
It is necessary to put your hand in the gap between the band and the can,
Since this gap is very narrow, there is a problem that it is difficult to insert a hand and the handling property is poor. Furthermore, since it is a metal can with a lid and easily generates rust and the like, there is a problem in terms of hygiene when used as a food container, and there is a problem that it is difficult to recycle it again for the same use.

An object of the present invention is to provide a plastic container having high suitability for stacking and capable of reducing transportation costs and storage costs.

[0006]

The object of the present invention is to achieve the above object by forming a groove for hanging a band on the bottom surface of a synthetic resin container body and forming a band positioning projection on a lid member. Is what you do.

More specifically, a plastic container according to the present invention has a bottom surface and a side surface formed by being raised from the periphery of the bottom surface, and a synthetic resin container body having an opening formed in an upper portion; A plastic container comprising a synthetic resin lid member closing the opening, wherein the container main body bottom surface includes a groove for hanging a band for tightening the lid member with respect to the container main body, The lid member is
On the upper surface thereof, a projection for positioning the band is provided.

In the present invention, if the band formed on the bottom surface of the container main body is formed so that the band can be hung from the bottom surface of the container main body to the cover member, the position and shape of the groove are set. Etc. may be set arbitrarily.
As an example, a plastic container having a substantially rectangular parallelepiped shape in which a concave groove is formed in a cross shape on the bottom surface can be considered. The band positioning protrusion formed on the upper surface of the lid member is not particularly limited as long as it is a structure capable of positioning the tightened band. For example, a structure in which two rows of projections are formed in a direction perpendicular to the circumferential direction at the center of the four sides constituting the outer peripheral edge of the upper surface of the lid member, and a band is wrapped around the groove sandwiched between the two rows of projections And so on.

According to this invention, a groove for hanging a band is formed on the bottom surface of the container body, and a projection for positioning the band is formed on the upper surface of the lid member. Therefore,
Since the PP band hung on the plastic container is housed in the groove on the bottom surface and the projection of the lid member protrudes above the PP band hung on the top surface of the lid member, the plastic container hung on the PP band is removed. Even when stacking,
It is possible to prevent the PP bands from interfering with each other. This can reduce the possibility of collapse of the load at the time of stacking, and can prevent the lid member from being opened by mistake due to the shift of the PP band.

[0010] Due to such a high level of stacking suitability, plastic containers can be stacked higher than in the case of conventional metal cans, and the space required for shipping and storage can be reduced. In addition to the reduction, it is possible to ship and store a large number of containers at once, which leads to a reduction in transportation costs and storage costs. In addition, since it is a plastic container, it does not generate rust and is advantageous in terms of hygiene and recycling, and it has a lower thermal conductivity than metal cans, so it has high cooling performance, and it is a food container. Suitable as.

In the above, it is preferable that a step is formed on the outer periphery of the lid member so as to protrude outward from the upper surface of the lid member. According to this, a step is generated between the upper surface of the lid member and the outer peripheral edge, and a gap is formed between the tightened PP band and the upper surface of the lid member. Therefore, PP
When the plastic container packed with the band is carried by hand, the PP band can be easily put on the hand and can be easily carried. In addition, by forming the portion surrounded by the step into a shape that can be fitted to the bottom surface of the container main body, the stability in stacking a plurality of plastic containers can be improved. In the case where a shape in which the bottom surface of the container body is fitted to the portion surrounded by the step is adopted, the depth of the above-described groove on the bottom surface is adjusted by the band It is preferable to make it larger than the sum of the thickness of the main body. In this way, when stacking plastic containers, it is possible to prevent interference between bands sandwiched between upper and lower containers.

[0012] The bottom surface of the container main body may include a convex portion protruding outward from the bottom surface, and the lid member may include a concave portion on the upper surface, into which the convex portion is fitted. preferable. The structure of the protrusion in the present invention is not particularly limited, and for example, a structure in which an L-shaped protrusion in a plan view is protruded in the vicinity of a position corresponding to the corner on the bottom surface, or the like can be considered. On the other hand, as the concave portion, a structure in which the L-shaped convex portion can be fitted, that is, a concave portion having a semicircular or triangular shape formed on the upper surface of the lid member can be considered. here,
There is no particular limitation on the height of the projection and the depth of the recess protruding from the bottom surface, and any dimensions can be adopted. However, by setting the height protruding from the bottom of the convex portion smaller than the depth of the concave portion, when stacking a plurality of plastic containers, instead of the tip of the convex portion, the bottom surface is a cover member of another container. It will be in contact with the upper surface. As a result, it is possible to prevent the load from being concentrated on the convex portion, and it is possible to prevent the convex portion from being damaged.

[0013] According to this, since the convex portion is formed on the bottom surface of the container body and the concave portion is formed on the lid member, a plurality of plastic containers can be stacked by fitting them together. Time stability can be increased. Further, it is possible to prevent lateral displacement between the stacked plastic containers during stacking. In addition, since the convex portion is provided, when the plastic container is placed alone on a pallet or the like, the contact area with the placing surface on the bottom surface is reduced, and the plastic container becomes less slippery during low temperature storage or the like. It is also suitable for transportation on a pallet or the like.

Further, it is preferable that the lid member has a guide rib on a lower surface near an outer peripheral edge thereof for expanding an opening of the container body outward. Here, the guide rib, when the opening of the container body is bent inward, pushes out the bending outward and facilitates the work of attaching and fitting the lid member to the container body. . As such a guide rib, any structure and shape may be used as long as the opening can be pushed outward when the lid member is mounted and fitted to the container body. To give an example, with the lower surface of the lid member as the base end, from the base end toward the tip end,
A rib having a triangular side surface with an inclined side toward the inside of the lid member is conceivable. Further, the arrangement of such guide ribs may be appropriately set.

According to this, even when the thickness of the container body is small and the opening is easily bent inward, the operation of placing the lid member on the container body can be easily performed.

Preferably, the bottom surface of the container body is formed smaller than the opening, and the container body is configured to be housed in the opening of another container body. In this case, the container body has a tapered shape in which the outer shape gradually narrows inward as the side surface goes from the opening to the bottom surface. Therefore, the bottom surface of the container body from which the lid member has been removed can be overlapped by being fitted into the opening of another container body, and the storage space can be reduced.

The plastic container described above may be used for food storage. Here, as foods stored in plastic containers, seasonings,
Various foods can be used regardless of the food material, for example, mozuku and the like.

According to the present invention, since the above-mentioned plastic container is used for storing food, the food is highly suitable for stacking, the cost for shipping and storage can be reduced, and the food is hygienic and has high heat-retention. A plastic container for storage can be provided.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. 1 to 4 show a plastic container 1 according to one embodiment of the present invention.
The plastic container 1 includes a synthetic resin container body 10 and a synthetic resin lid member 20 for closing an opening 13 described later.
It is provided with.

The container body 10 has a bottom surface 11 having a substantially rectangular planar shape.
And a side surface 12 raised from the periphery of the bottom surface 11, and has a substantially rectangular parallelepiped structure having an opening 13 (see FIG. 4) at the top. Bottom 11
As shown in FIG. 2 and FIG. 3, the bottom portion 11A is formed in a substantially rectangular shape in a plane, and protrudes out of the bottom portion 11A in the vicinity of the four corners of the bottom portion 11A. And four projections 11E formed.

Here, the convex portion 11E is formed in a substantially L-shape in plan view when viewed from the bottom direction of the container body 10, and the length of a portion protruding downward from the bottom portion 11A is defined by a lid described later. The depth of the concave portion 26 of the member 20 (for example, 2.5 m
m) (for example, 2 mm). In this manner, when the plastic containers 1 are stacked, the tip of the convex portion 11E does not hit the bottom of the concave portion 26.

At the center of the four sides constituting the bottom surface 11A, a cross-shaped groove 11C is formed so as to connect the two opposing sides. By bridging the PP band over the groove 11C, the lid member 20 is tightened to the container body 10. Furthermore, the bottom part 1
A substantially circular depression 11D is formed in the vicinity of the center of 1A, and accordingly, a cross-shaped groove 11C also has an arch-like structure depressed toward the inside of the container body 10. The depth of the groove 11C is formed (for example, 5.5 mm) larger than the height (for example, 5 mm) of a step 24 of the lid member 20 described later, and when the plastic containers 1 are stacked, the PP band 2 The gap through which the sheets pass is opened.

Returning to FIG. 1, the side surface 12 of the container body 10 will be described.
Has four side walls 12A and four corner portions 12B which are portions where the two side walls 12A are in contact with each other and have a predetermined curvature. Each of the four side walls 12A is provided with two reinforcing portions 12C each formed of a concave groove which has entered inside by the thickness of the side wall 12A.
2 to increase the rigidity.

As shown in FIG. 4, a side rib 13A having an L-shaped cross section is formed at the periphery of the opening 13 below the opening end so as to surround the periphery of the container body 10. A spacer 14 is provided directly below the side rib 13A and on each corner portion 12B. The spacer 14 has a role of forming a gap between the container main bodies 10 when a plurality of container main bodies 10 are stacked, and prevents the container main bodies 10 from sticking to each other.
Between 0, air is allowed to flow through the gap. In addition,
In the container body 10 described above, the bottom surface 11 is formed smaller than the opening 13, and the bottom surface 11 is inserted into the opening 13 so that a plurality of container bodies 10 can be stacked.

On the other hand, as shown in FIG. 1, the lid member 20 for closing the opening 13 has an upper surface 21 and a peripheral portion 22 formed by rising from the outer peripheral edge of the upper surface 21. Also, the peripheral portion 2 is raised from the upper surface 21 as described above.
2, the upper surface 21 is formed on the outer periphery of the lid member 20.
, A step 24 protruding in the out-of-plane direction is formed. Due to the step 24, a gap is formed between the PP band used for tightening the plastic container 1 and the upper surface 21 of the lid member 20, and when the plastic container 1 packed with the PP band is carried by hand, the PP band is Hand work can be done smoothly. The height of the step 24 may be appropriately set in accordance with the stored items or the like, but preferably has a height of, for example, about 5 mm in consideration of handleability.

Near the four corners of the upper surface 21, recesses 26 each having a substantially triangular shape are formed. here,
In the recess 26, the bottom surface 11 of another plastic container 1 is provided.
A plurality of plastic containers 1 are stacked one on the other by fitting the convex portions 11E formed on A. The upper surface 21 is formed to be larger than the bottom surface 11 of the container body 10 described above, so that the bottom surface 11 of another container body 10 can be placed in a space surrounded by the upper surface 21 and the step 24. I have. Each corner portion of the upper surface 21 has a shape having an arc corresponding to the curvature of the corner portion 12B of the container body 10.

A protrusion 23 for positioning the PP band is formed on the peripheral portion 22 in a direction communicating with the inside and outside of the peripheral portion 22. Here, two rows of the projections 23 are formed on four sides of the peripheral portion 22 at positions corresponding to the above-mentioned grooves 11C formed on the bottom surface 11 of the container body 10 described above. The PP band is put over the groove sandwiched between the two rows of projections 23.

Further, a side surface 22A is formed so as to extend downward from the outer end of the peripheral portion 22, and extends downward from the lower surface of the peripheral portion 22 inside the side surface 22A. The presser 22B is formed at the bottom. With such a structure, when the lid member 20 is placed on the container main body 10, the opening 13 is covered with the side surface 22A from the outside, and the opening end has the side surface 22A and the holding member 2A.
2B (see FIG. 4). A guide rib 27 is provided on the back side of the outer peripheral edge 22 of the lid member 20 and at the center of the four sides constituting the outer peripheral edge 22 so as to bridge between the presser 22B and the back surface 28 of the lid member 20. ing. The guide rib 27 is provided on the cover member 2.
With the lower surface side of the base member 0 as a base end, a triangular side plate-like structure having an inclined side inward toward the inside of the lid member 20 from the base end toward the distal end is formed.

The width of the groove 11C and the interval between the two rows of protrusions 23 described above can be appropriately set according to the width of the PP band used. It is preferable that the width of about 15 mm is wider because the band can be easily applied. Further, an edge of the groove 11C along the circumferential direction of the bottom surface portion 11A, and the lid member 20
Is preferably a surface having an appropriate curvature. In this way, the corners do not hit the PP band, and the PP band is hardly cut. Further, the height of the projections 23 can be appropriately set according to the thickness of the PP band to be used, but is 0.5 to 5 mm larger than the thickness of the PP band.
A higher degree is preferable because the PP band can be surely prevented from shifting.

In using the plastic container 1 configured as described above, first, mozuku, which is a food, is stored in the container body 10, and then the lid member 20 is attached and fitted, and the opening 13 is closed. Close up. In this state, two grooves 11C formed in a cross shape on the bottom surface 11 of the container main body 10 and two opposing rows of projections 23 formed on the lid member 20 and located above the grooves 11C are formed. One each in between
The P band 30 is laid in a cross shape, and the container body 10 and the lid member 20 are tightened (see FIG. 5).

When stacking the plastic container 1 containing mozuku for shipping, storage, etc., the convex portion 1 formed on the bottom surface 11 of a certain plastic container 1 is used.
1E is fitted into a concave portion 26 provided on the upper surface 21 of another lid member 20 (not shown). In this case, the protrusion 11
Since the height projecting from the bottom surface 11A of E is set smaller than the depth of the concave portion 26, one bottom surface 11A comes into contact with the upper surface 21 of the other lid member 20. Further, the depth of the groove 11C formed in the bottom surface 11 is
0 and the thickness of the two PP bands 30 are formed to be larger than the sum of the height of the step 24 and the thickness of the two PP bands 30.
A gap through which two bands 30 pass is ensured. Therefore, the PP band 30 wrapped around the cover member 20 of one plastic container 1 and the other plastic container 1
There is no direct contact and interference with the PP band 30 laid over the bottom surface 11 of the, and the stability at the time of stacking is secured.

Further, when the plastic container 1 packed with the PP band 30 tightly packed is transported by hand,
A hand is inserted into the gap created between the P band 30 and the upper surface 21 of the lid member 20 for transportation. When the used plastic container 1 is stored, it is performed by stacking a plurality of empty container bodies 10 (see FIG. 6). At this time, the opening 13
The bottom surface 11 formed smaller than the other container body 10
And are housed in an overlapping manner by being fitted into the opening 13.

According to the above-described embodiment, the following effects can be obtained. (1) The depth of the groove 11C on the bottom surface 11 is
4 and the thickness of the two PP bands 30. Therefore, when stacking a plurality of plastic containers 1, each plastic container 1
The stability can be ensured without the PP band 30 interposed therebetween interfering. (2) The convex portion 11E is formed on the bottom portion 11A, and the lid member 22 is formed.
Since the recesses 26 are formed in the recesses, a plurality of plastic containers can be stacked by fitting them, and the stability at the time of stacking can be enhanced. (3) The length of the protruding portion 11E protruding from the bottom surface 11A is made smaller than the depth of the concave portion 26 in the lid member 22. Therefore, when a plurality of plastic containers 1 are stacked, not the tip of the convex portion 11E but the bottom surface portion 11A comes into contact with the upper surface 21 of the lid member 20. Thereby, it is possible to prevent the load from being concentrated on the convex portion 11E, and it is possible to prevent the damage of the convex portion 11E.

(4) Since the convex portion 11E is provided on the bottom portion 11A, when the plastic container 1 is placed alone on a pallet or the like, the contact area of the bottom surface 11 with the placement surface is reduced. Also, it is suitable for transportation on a pallet because it becomes less slippery during low temperature storage. (5) Since the stacking suitability of the plastic container 1 is high,
Plastic container 1 compared to a conventional metal can
Can be stacked higher, reducing the space required for shipping and storage, etc., as well as shipping and storing a large number of containers at once, reducing transport and storage costs. Connect. (6) The groove 11C is formed on the bottom surface 11 of the container
A projection 23 is formed at 0. Therefore, since the PP band 30 hung on the plastic container 1 is housed in the groove 11 </ b> C and the projection 23, it is possible to prevent the lid member 20 from being opened by mistake due to the shift of the PP band 30.

(7) Since the plastic container 1 is used, it is advantageous in terms of hygiene and recycling without generating rust and the like, and has a lower heat conductivity than a metal can, so that it has a good cooling effect. High and suitable for food containers. (8) Since the step 24 is formed on the cover member 20, a gap is formed between the tightened PP band 30 and the upper surface 21 of the cover member 20. Therefore, when carrying the plastic container 1 packed with the PP band 30 by hand,
The P band 30 can be easily put on a hand and can be easily carried. (9) Since the guide rib 27 is provided on the back side of the lid member 22, even if the opening 13 is bent inward, the lid member 20 can be easily attached to and fitted to the container body 10. .

(10) The bottom surface 11 of the container body 10 is formed smaller than the opening 13, and the container body 10 is configured to be housed in the opening 13 of another container body 10. Therefore, the bottom surface 11 of the container main body 10 from which the lid member 20 has been removed can be overlapped by being fitted into the opening 13 of another container main body 10, and the storage space can be reduced. (11) Since the plastic container 1 is formed in a substantially rectangular parallelepiped shape, it can be housed in a rectangular space such as a truck bed with no gap compared to a cylindrical container or the like. (12) Spacers 14 are provided at the corners 12B of the container body 10.
Is provided, it is possible to prevent the plurality of container bodies 10 from being in close contact with each other when they are stored one on top of the other, and it is easy to remove them when they are used again.

It should be noted that the present invention is not limited to the above embodiment, and modifications and improvements as long as the object of the present invention can be achieved are included in the present invention. For example, in the above-described embodiment, the groove 11C is formed in a cross shape on the bottom surface 11A of the container body 10, but is not limited thereto. That is, a step may be provided on the peripheral edge of the bottom surface, and a groove may be formed facing the step portion protruding from the bottom surface.

In the above embodiment, the groove 11C and the projection 23 are formed so that the PP band 30 can be crossed over the PP band 30, but the present invention is not limited to this. That is, as long as the PP band is formed so as to hang from the bottom surface of the container body to the lid member, the position, the shape, the number, and the like may be arbitrarily set. Further, the band to be bridged is not limited to the band made of PP, and a band of any material that can be packed can be adopted.

In the above embodiment, the bottom surface 11 of the container body 10 is formed smaller than the opening portion 13. However, the present invention is not limited to this, and the bottom surface 11 may be the same size or the bottom surface may be larger. In addition, a reinforcing portion 12 is provided on a side surface 12 of the container body 10.
Although C and the spacers 14 are formed, these may not be particularly formed.

In the above embodiment, four convex portions 11E and four concave portions 26 are formed in the vicinity of each corner portion, but the present invention is not limited to this. That is, it can be formed at any position as long as it does not hit the PP band to be bridged when fitted and the stability when the plastic container is placed can be ensured. Further, the shapes of the convex portion 11E and the concave portion 26 are not limited to those of the above-described embodiment, and may have any shape as long as the structure can be fitted and the convex portion can ensure the stability of the container.

In the above embodiment, the plastic container 1 is used as a food container. However, the present invention is not limited to this, and it may be used for storing chemical industrial materials such as ink and paint. In addition, although mozuku was stored as food, the present invention is not limited to this, and it may be used for storing seasonings and other ingredients.

The shape of the plastic container 1 is not limited to the substantially rectangular parallelepiped shape as in the above embodiment, but may be any other shape. For example, a cylindrical shape may be used. Good.

[0043]

According to the present invention, a groove for hanging a band is formed on the bottom surface of the container body, and a projection for positioning the band is formed on the upper surface of the lid member. Therefore,
Since the PP band hung on the plastic container is housed in the groove on the bottom surface, and the projection of the lid member projects above the PP band hung over the top surface of the lid member, the plastic container hung on the PP band is Even when stacking,
There is an effect that the PP bands can be prevented from interfering with each other. This has the effect of reducing the possibility of collapse of the load during stacking and preventing the lid member from being accidentally opened due to the shift of the PP band.

With such a high level of stacking suitability, plastic containers can be stacked higher than in the case of conventional metal cans, and the space required for shipping and storage can be reduced. In addition to the reduction, it is possible to ship and store a large number of containers at once, which leads to a reduction in transportation costs and storage costs. In addition, since it is a plastic container, it does not generate rust and is advantageous in terms of hygiene and recycling, and it has a lower thermal conductivity than metal cans, so it has high cooling performance, and it is a food container. Suitable as.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a plastic container according to an embodiment of the present invention.

FIG. 2 is a plan view showing a bottom surface in the embodiment of FIG.

FIG. 3 is a lower sectional view of the embodiment of FIG. 1;

FIG. 4 is a partially cutaway top sectional view of the embodiment of FIG. 1;

FIG. 5 is a perspective view showing a packing state in the embodiment of FIG. 1;

FIG. 6 is a view showing a state where the container bodies in the embodiment of FIG. 1 are stacked.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Plastic container 10 Container main body 11 Bottom surface 11A Bottom part 11C Groove 11E Convex part 12 Side surface 13 Opening 20 Lid member 21 Top surface 22 Peripheral part 23 Projection 24 Step 26 Depression 27 Guide rib 30 PP band as band

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3E006 AA02 BA02 CA01 DB03 DB08 FA02 3E084 AA05 AA14 AB05 AB10 BA01 CA03 CC03 DA03 DB13 DC03 EC03 FA09 FD02 GA08 GA10 GB12 GB13 GB30

Claims (6)

[Claims] 1. A synthetic resin container main body having a bottom surface and a side surface raised from the periphery of the bottom surface and having an opening formed in an upper portion, and a synthetic resin lid member for closing the opening. A plastic container comprising: a container body bottom surface provided with a groove for hanging a band for tightening the lid member with respect to the container body, wherein the lid member has an upper surface for positioning the band. A plastic container characterized by comprising a projection of (1). 2. The plastic container according to claim 1, wherein a step is formed on an outer peripheral edge of the lid member so as to protrude outward from a top surface of the lid member. . 3. The plastic container according to claim 1, wherein the bottom surface of the container body has a convex portion protruding outward from the bottom surface of the container body, and the lid member has an upper surface, A plastic container having a concave portion into which the convex portion is fitted. 4. The plastic container according to claim 1, wherein the lid member has a guide rib on a lower surface near an outer peripheral edge thereof for expanding an opening of the container body outward. A plastic container characterized in that: 5. The plastic container according to claim 1, wherein a bottom surface of the container body is formed smaller than the opening, and the container body is housed in an opening of another container body. A plastic container characterized by being configured as possible. 6. The plastic container according to claim 1, wherein said plastic container is for storing food.