JPH08207923A - Plastic container - Google Patents

Abstract

PURPOSE: To always break a container with predetermined directionality to eliminate unnecessary spaces when fractions are overlaid so as to reduce a bulk as waste by forming a cut for starting breakage of the container on a flange of the container and forming a protrusion of an elliptic shape on a plane on a bottom to protrude inward the container. CONSTITUTION: A container 1 is formed of plastic, a flange 2 is formed along an outer periphery, and an approximately V-shaped cut 3 is formed on the flange 2. When numerous containers are to be disposed, each container 1 is broken from the cut 3 formed on the flange 2, whereby all containers can be broken with predetermined directionality. In addition, a protrusion 5 of an elliptic shape on a plane with a longer axis placed along a lengthwise direction of the container 1 is formed at the center of a bottom 4 of the container 1 so that the protrusion protrudes inward the container 1. The center of the protrusion 5 is pushed by a finger from outside toward inside, thereby breaking with a breakage face having predetermined directionality.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic container used for rice confectionery trays and the like.

[0002]

2. Description of the Related Art Conventionally, as a container for storing various processed foods, a container molded of plastic or a container molded of a sheet is generally used. When these containers are discarded as garbage after use, the containers are broken, torn, or broken, and fragments are packed in bags or the like for disposal.

[0003]

However, in the conventional plastic container, for example, when it is broken and discarded, the breaking direction is not constant, and the fragments and pieces of the divided plastic container are all different in size and shape. When a large number of plastic containers are divided and stacked or bundled for disposal, there is a problem in that an unnecessary space is generated between the fragments and the bulk of the waste increases as a whole.

The present invention was developed in view of the above points, and its purpose is to make it easy for each container to always be easily broken with a certain direction and unnecessary when stacking these pieces. Another object of the present invention is to provide a plastic container capable of reducing the bulk of dust as much as possible without generating a large space.

[0005]

In order to achieve the above object, the present invention has the following construction. That is, the plastic container according to claim 1 of the present invention,
In a plastic container body formed so as to have a flange portion on the outer peripheral edge, in the funnel portion of the container body,
This is a configuration in which a notch portion is formed to start breaking the container body.

Further, in the plastic container according to claim 2 of the present invention, in the plastic container body, a convex portion having a plane elliptical shape is formed on the bottom portion of the container body so as to project inside the container body. This convex portion serves as a breakage starting portion of the container body.

According to a third aspect of the present invention, in a plastic container body, a convex portion having a plane elliptical shape is formed on a bottom portion of the container body so as to project inside the container body. In this structure, a plurality of uneven portions having an elliptical plane shape are formed in stages on the convex portion, and the convex portion is used as a breaking start portion of the container body.

Further, in the plastic container according to claim 4 of the present invention, in the plastic container body, a rib projecting inside the container body is formed at the bottom of the container body, and the container is provided at a predetermined position of the rib. A cutout portion for starting the breakage of the main body is formed, and the cutout portion serves as a breakage start portion of the container main body.

According to a fifth aspect of the present invention, in the plastic container body, a quadrangular pyramid-shaped convex portion projecting inside the container body is formed at the bottom of the container body. In this structure, the convex portion is used as a breaking start portion of the container body.

According to a sixth aspect of the present invention, in the plastic container body, the bottom portion of the container body is provided with a concave portion and a convex portion which are fitted when the container body is folded in two. It is a composition.

Further, the plastic container according to claim 7 of the present invention is a plastic container main body formed so as to have a flange portion on an outer peripheral edge thereof, and the plastic container main body is outwardly provided at a portion adjacent to the flange portion of the container main body. A concave portion that bulges out is formed on the container body, and when the container body is folded in two, the flange portion on the bent side fits into the concave portion on one side.

[0012]

In the plastic container according to the first aspect of the present invention as described above, when the container is broken at the time of disposal to reduce the bulk, the plastic container is broken from the notch formed in the flange portion of the container body. By starting, the container can be easily broken in a predetermined direction, and even if many pieces of this container are collected or overlapped, an unnecessary space is not generated and the volume as garbage can be reduced. .

Further, in the plastic container according to the second aspect of the present invention, first, the center of the flat elliptical convex portion projecting inward of the container body formed on the bottom of the container body is pushed from the outside to the inside by a finger. . As a result, a crack is formed in the convex portion. Further, this container body is pulled in both outer directions of the short sides of the plane elliptical convex portion to break the container body, and the container body is divided into a plurality of divisions with a predetermined directionality, and the dust is the same as in claim 1. To reduce the bulk.

Further, in the plastic container according to the third aspect of the present invention, by pressing the convex portion projecting inside the container body downward from the inside of the container body with a finger, the uneven portion having a plane elliptical shape is gradually formed. The projecting portions formed in step 1 are sequentially broken from the center to the outside, and the container body is fractured from the bottom part by this breaking, and the container body is divided into two parts with a predetermined directionality, and a similar planar elliptical projecting portion is formed. The number of divisions is increased by having a large number of divisions, and the division is divided into several divisions to reduce the volume of dust as in the first aspect.

In the plastic container according to claim 4 of the present invention, the container body starts to break from the notch formed in the rib by pulling from both sides in the longitudinal direction of the rib formed on the bottom of the container body. The container body can be divided into two parts with a predetermined directionality.

Further, in the plastic container according to the fifth aspect of the present invention, when the container body is pulled to both sides, breakage starts from the quadrangular pyramid-shaped convex portion formed on the bottom of the container body, and further pulling causes the container body to be pulled. Can be broken with a predetermined directionality.

Further, in the plastic container according to the sixth aspect of the present invention, by folding the container body in two, the convex portion on the folded side formed on the bottom portion is fitted into the concave portion formed on the bottom portion. Reduce the bulk of the container. Of course,
The container body may be folded in two and the concave side formed on the bottom may be fitted to the convex on the bottom.

Further, in the plastic container according to claim 7 of the present invention, the container body is folded in two, and the flange portion on one side is fitted into the concave portion formed adjacent to the other flange portion, and The folded state can be maintained and the volume of dust can be reduced.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 3 are views showing a first embodiment of the present invention. In this container, a container main body 1 is made of plastic, a flange portion 2 is formed on an outer peripheral edge thereof, and one portion of the flange portion 2 is formed. A substantially V-shaped notch 3 is formed at the start of the fracture.

Before packaging, as shown in FIG. 2, the notch 3 is arranged so that the ends 2a of the flanges 2 of the plurality of superposed container bodies 1 face the heated nichrome wire A, and they are superposed. The plurality of container bodies 1 and the ends 2a of the flange portion 2
It can be easily formed by pressing from above to the nichrome wire A.

Further, as shown in FIG. 3, before packing, a plurality of superposed container bodies 1 are moved downward from the bottom,
The notch 3 can be formed in the flange portion 2 of each container body 1 by bringing the tip portions a of the nichrome wires A into contact with the flange portions 2 of the plurality of container bodies 1 that are stacked.

In the container of the first embodiment as described above, when a large number of the containers are discarded, each container is crushed from the notch 3 formed in the flange portion 2 of the container main body 1 so that all the containers have a fixed direction. It can be ruptured by nature, without causing unnecessary space between the fragments after rupture,
The volume of dust can be reduced and the waste can be discarded.

FIG. 4 is a diagram showing a second embodiment of the present invention, in which the container body 1 of this embodiment is also made of plastic and has a flange portion 2 formed on the outer peripheral edge thereof. At the center of the bottom portion 4 of the container body 1, a convex ellipse 5 having a long-axis direction in the longitudinal direction of the container body 1 is formed so as to project inside the container body 1. The convex portion 5 serves as a rupture start portion of the container body 1 and ruptures so that the fracture surface has a predetermined directionality at the time of rupture.

The plastic container of the second embodiment described above is
At the time of discarding, first the convex portion 5 formed on the bottom portion 4 of the container body 1
By pushing the center of the inside of the bottom part 4 from the outside to the inside with a finger, the convex part 5 is cracked. Further, by pulling the container main body 1 in both minor directions in the minor axis direction of the plane elliptical convex portion 5 by pulling the flange portion 2 in both outward directions, the breakage of the container main body 1 expands from the convex portion 5 and the container main body 1 is expanded. It can be broken along the broken line in the figure to be broken.

FIG. 5 is a view showing a third embodiment of the present invention, in which the container body 1 of this embodiment is also made of plastic and has a flange portion 2 formed on the outer peripheral edge thereof. In addition, a convex portion 6 having a plane elliptical shape is formed on the bottom portion 4 of the container body 1 so as to project inside the container body 1. A plurality of uneven portions 7 having a plane elliptical shape are formed in stages on the convex portion 6 so that the convex portion 6 serves as a breaking start portion of the container body 1.

In the plastic container of the third embodiment described above, the convex portion 6 projecting inward of the container body 1 is pushed downward from the inside of the container body 1 by a finger so that the uneven portion 7 having a plane elliptical shape is gradually formed. The projecting portions 6 formed in 1 are sequentially broken from the center to the outside, and the container body 1 is broken from the projecting portions 6 as a starting point along the broken line in the figure.

FIG. 6 is a view showing a fourth embodiment of the present invention, in which the container body 1 of this embodiment is also made of plastic, and the flange portion 2 is formed at the outer peripheral edge thereof. A rib 8 projecting inward of the container body 1 is formed in the center of the bottom portion 4 of the container body 1 so as to cross the container body 1. A V-shaped notch 9 is formed in the central portion of the rib 8 so as to serve as a fracture start portion.

In the plastic container of the fourth embodiment described above, the notch 9 formed in the rib 8 is formed by pulling the flange 2 from both sides in the longitudinal direction of the rib 8 formed in the bottom 4 of the container body 1. The container body 1 starts to break from, and the container body 1 can be broken along the broken line in the figure.

FIG. 7 is a view showing a fifth embodiment of the present invention, in which the container body 1 of this embodiment is also made of plastic and has a flange portion 2 formed on the outer peripheral edge thereof. Further, a quadrangular pyramid-shaped convex portion 10 projecting inward of the container body 1 is formed in the central portion of the bottom portion 4 of the container body 1. Container body 1
Is designed to start breaking from this quadrangular pyramid-shaped convex portion 10 as a starting point. The container body 1 is broken from this starting point, and a plurality of pieces having a predetermined cross-sectional shape are always formed.

In the plastic container of the fifth embodiment, the flange portion 2 of the container body 1 is picked up and pulled to both sides, so that the quadrangular pyramid-shaped convex portion 10 formed on the bottom portion 4 of the container body 1 has a ridge line 10a. The bottom part 4 of the container body 1 can be broken along the broken line in the figure by breaking from the bottom and further pulling.

8 to 9 are views showing a sixth embodiment of the present invention, in which the container body 1 of this embodiment is also made of plastic, and the bottom 4 of the container body 1 has this container body 1
A concave portion 11 and a convex portion 12 are formed which are fitted when the is folded in two. The concave portion 11 and the convex portion 12 are formed so as to project inside the bottom portion 4.

In the plastic container of the sixth embodiment, the container body 1 is folded in two and the concave portion 11 and the convex portion 12 formed on the bottom portion 4 are fitted to each other to hold the folded state. By doing so, the bulk of the container can be reduced.

10 to 11 are views showing a seventh embodiment of the present invention, in which the container body 1 of this embodiment is also made of plastic and has a flange portion 2 formed on the outer peripheral edge thereof. A concave portion 13 that bulges outward is formed at a position adjacent to 2.

In the plastic container of the seventh embodiment, the container body 1 is folded in two and the flange portion 2 on one side is folded.
Is fitted into the concave portion 13 formed adjacent to the other flange portion 2 to hold the container body 1 in the folded state. By doing so, the bulk of the container can be reduced.

The container body 1 may be formed of a stretched sheet of PS, PP, PET or the like. Further, perforations may be provided in the breakage portion of the container body 1 so that the breakage can be made.

[0036]

As is apparent from the above description, in the plastic container according to claim 1 of the present invention, since the notch for starting the breakage is formed in the flange, the container body is broken from this notch. By doing so, the container body is broken in a predetermined direction, and the container body can be easily divided into a plurality of pieces. Therefore, even when these fragments are collected, the shapes of the fragments are constant to some extent, and the bulk of the dust can be reduced as much as possible without creating an unnecessary space between the fragments.

Further, in the plastic container according to the second aspect of the present invention, the convex portion formed on the bottom of the container body is pushed from the bottom to the inside to cause a crack in the convex portion, and further the container body is formed into a plane elliptical convex shape. By pulling both sides of the short side of the part in the outward direction, the container main body can be easily divided into several parts starting from the convex part. Therefore, even when these fragments are collected, the shapes of the fragments are constant to some extent, and the bulk of the dust can be reduced as much as possible without creating an unnecessary space between the fragments.

Further, in the plastic container according to the third aspect of the present invention, the convex and concave portions formed on the bottom of the container body are pressed downward from the inside by fingers to form the planar elliptical concave and convex portions stepwise. It is destroyed from the center of the convex part to the outside,
It is possible to easily divide the container body into a plurality of divisions starting from the convex portion, and to reduce the bulk of the waste and dispose of it without generating an unnecessary space between the fragments.

Further, in the plastic container according to the fourth aspect of the present invention, by pulling the container body from both sides,
The container body breaks from the notch formed in the rib, and the container body can be easily broken to reduce the bulk and be discarded.

In the plastic container according to the fifth aspect of the present invention, when the container body is pulled to both sides, the rupture starts from the quadrangular pyramid-shaped convex portion formed on the bottom of the container body, and the container body is further pulled. Can be destroyed to reduce bulk.

Further, in the plastic container according to the sixth aspect of the present invention, the container main body is folded in two and the convex portion and the concave portion formed on the bottom are fitted to each other to maintain the folded state. The bulk of the container as dust can be easily reduced.

Further, in the plastic container according to claim 7 of the present invention, the container body is folded in two, and the flange portion on one side is fitted into the recess formed adjacent to the other flange portion, whereby the container body is folded. It is possible to reduce the bulkiness in the same manner as described above by keeping the double-folded state.

[Brief description of drawings]

FIG. 1 is a perspective view of a first embodiment according to the present invention.

FIG. 2 is an explanatory diagram of a manufacturing process of the first embodiment.

FIG. 3 is an explanatory view of another manufacturing process of the first embodiment.

FIG. 4 is a cross-sectional perspective view of a main part of a second embodiment according to the present invention.

FIG. 5 is a cross-sectional perspective view of essential parts of a third embodiment according to the present invention.

FIG. 6 is a cross-sectional perspective view of a main part of a fourth embodiment according to the present invention.

FIG. 7 is a cross-sectional perspective view of a main part of a fifth embodiment according to the present invention.

FIG. 8 is a perspective view of a sixth embodiment according to the present invention.

FIG. 9 is a cross-sectional view showing a folded state of the container according to the sixth embodiment of the present invention.

FIG. 10 is a sectional view of a seventh embodiment according to the present invention.

FIG. 11 is a cross-sectional view showing a folded state of the container according to the seventh embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container body 2 Flange part 3 Notch part 4 Bottom part 5 Convex part 6 Convex part 7 Concavo-convex part 8 Rib 9 Notch part 10 Square pyramidal convex part 11 Recessed part 12 Convex part 13 Recessed part

Claims (7)

[Claims] 1. A plastic container body formed so as to have a flange portion on an outer peripheral edge thereof, wherein a flange portion of the container body is provided with a cutout portion for starting breakage of the container body. . 2. In a plastic container main body, a flat elliptical convex portion is formed on the bottom of the container main body so as to protrude inside the container main body, and this convex portion is used as a fracture start portion of the container main body. A plastic container characterized by. 3. In a plastic container main body, a planar elliptical convex portion is formed on the bottom of the container main body so as to project inside the container main body, and a plurality of planar elliptical concave and convex portions are formed on the convex portion. Is formed stepwise, and the convex portion is used as a breaking start portion of the container body. 4. In a plastic container body, a rib protruding toward the inside of the container body is formed at the bottom of the container body, and a notch is formed at a predetermined position of the rib to start breaking the container body. A plastic container characterized in that a part thereof is a breaking start portion of the container body. 5. In a plastic container main body, a quadrangular pyramid-shaped convex portion projecting inside the container main body is formed on a bottom portion of the container main body, and the quadrangular pyramid-shaped convex portion is used as a fracture start portion of the container main body. A plastic container characterized by. 6. A plastic container body, characterized in that a concave portion and a convex portion which are fitted when the container body is folded in two are formed in a bottom portion of the container body. 7. A plastic container main body formed so as to have a flange portion on an outer peripheral edge thereof, wherein a concave portion that bulges outward is formed at a portion adjacent to the flange portion of the container main body, and the container main body is formed. A plastic container characterized in that, when folded in two, a flange portion on the bent side is fitted into a concave portion on one side.