JPH10218150A - Container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily disassemble a container without using a special device by providing a cutting line to divide the container in the direction of longitudinally cutting the container or in the direction of transversely cutting the container, and making the strength of the line weaker than other parts. SOLUTION: A cutting line 50 is provided in the longitudinal direction on a part from a mouth part 20 of a PET bottle 10 to a connection part of a body 30 to a bottom part 40, and circumferentially on a connection part of the body part 30 and the bottom part 40. The strength of the cutting line 50 is made to be weaker than that of the other part than the cutting part by forming two recessed parts of the prescribed depth from the outer circumferential surface of the PET bottle 10 parallel to each other with the prescribed intervals therebetween. A holding part is provided on one end part of a separation part 52 to be formed between the parallel cutting lines 50. In the case of disassembly, the holding part is pulled upward, the separation part 52 is separated from the PET bottle 10, and the PET bottle 10 is cut and disassembled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container, and more particularly to a container formed of a resin material.

[0002]

2. Description of the Related Art Conventionally, as containers for storing liquids such as soft drinks and liquid soaps and powders such as powder seasonings,
Glass bottles, steel cans, aluminum cans, etc. were used. In order to solve the problem, containers using polyethylene terephthalate (PET) or polypropylene, which are lighter and easier to handle (hereinafter,
Simply referred to as “plastic bottles”.

[0003] Since polyethylene terephthalate and polypropylene are substances that emit substances harmful to the human body when incinerated, containers using the same have been disposed of in their original shape after use. However, when discarded in the original state, the volume of the garbage becomes bulky. Therefore, such a container causes a considerable increase in cost in the case of paying for collected garbage that has been gradually introduced in recent years.

[0004] For these reasons, in order to reduce the volume of dust as much as possible, it is attempted to crush and discard these containers. However, the containers have a certain degree of elasticity due to the nature of the material, and are crushed. However, because of its own resilience, it could be swelled again, and its volume could not be reduced completely, and there was a limit to its reduction.

[0005] In view of the above problem, various devices have been conventionally proposed for discarding a PET bottle or the like after being crushed by human power or heat compression to reduce the size.

[0006]

However, a human-powered crushing device requires a considerable amount of arm power and is therefore extremely difficult for a child to perform, and is not easy to use. There is still no awareness of reducing the volume of garbage from plastic bottles, etc., by overcoming the difficulties.

[0007] Further, any existing apparatus for crushing a PET bottle or the like by heat compression is large and expensive, and requires a power cost for performing heat compression and maintenance for regular maintenance. It is expensive and there is a problem to introduce at the individual level. Therefore, such a device cannot reduce the amount of trash including PET bottles and the like discharged from homes and the like, which is impractical.
The reality is that it is the name of a corporate advertisement.

Various methods have conventionally been devised for melting and recycling used PET bottles and the like, pelletizing them, reusing them, and reusing them for other resin products. Since the inside of a PET bottle or the like cannot be cleaned, it must be cleaned after being finely cut, which is troublesome and costly.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a container which can be easily divided after use and can be disposed of without bulk without using any special device. To provide.

[0010]

In order to solve the above-mentioned problems, a container according to claims 1 to 3 of the present invention is provided with a cutting line for cutting the container having a strength lower than other parts. ing. Further, the cutting line is provided in a direction in which the container is divided or cut in a circle.

Therefore, the container can be cut off from the cutting line and easily disassembled, and the bulk of the container can be reduced. Thereby, it can be piled up when discarded, and can be efficiently discarded without being bulky.

The container according to the fourth aspect is provided with two cutting lines arranged side by side. Therefore, by grasping one end of the container interposed between the two cutting lines and pulling it outward, the portion can be cut along the cutting line and peeled off from the container. Thereby, the container can be easily divided, and the same operation as the above-mentioned claim can be obtained.

In the container according to the fifth aspect, the cutting line is provided by forming the line to be thinner than other portions of the container. Therefore, similarly to the container described in the above-mentioned claim, the container can be easily separated from the cutting line.

According to a sixth aspect of the present invention, the cutting line is formed by forming the line at a predetermined interval in the length direction to be thinner than other portions of the container. Therefore, the container can be easily cut off from the cutting line as in the above-described claim.

In the containers according to the seventh to ninth aspects, the cutting line is formed by mixing a resin material used for the container with an incompatible material. Therefore, since the strength of the cutting line is lower than that of the container, the container can be easily separated from the cutting line.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an overall explanatory view showing a PET bottle 10 as a container to which the present invention is applied, as viewed from a perspective direction. The plastic bottle 10 is made of polyethylene terephthalate (P) which is a resin material.
ET), and as shown in FIG.
0, a body 30 and a bottom 40.

The bottle mouth portion 20 has a screw portion 21 screwed around its outer periphery, and is formed so that the inside of the plastic bottle 10 can be sealed by screwing with a lid portion (not shown). Have been.

The body 30 is formed in a substantially cylindrical shape having a substantially constant thickness, and has an upper portion connected to the bottle opening 20 and a lower portion connected to the bottom portion 40. The bottom portion 40 includes a substantially disc-shaped bottom surface portion 41 and a peripheral wall portion 42 that rises substantially vertically above the peripheral edge 41a. These bottle mouths 20,
The PET bottle 10 including the body 30 and the bottom 40 is manufactured by injection blow molding.

Then, the plastic bottle 10 is
And a cutting line 50 provided on the periphery of the connecting portion between the body 30 and the bottom portion 40 in the longitudinal direction from the connection portion between the body portion 30 and the bottom portion 40.

FIG. 2 is an explanatory sectional view of an essential part for explaining the cutting line 50. FIG. 1A is a sectional view taken along line AA of FIG. 1, and FIG. 1B is a sectional view taken along line BB of FIG. As shown in the figure, the cutting line 50 is provided by forming two concave portions 51 having a predetermined depth h from the outer peripheral surface 11 of the plastic bottle 10 in a straight line at predetermined intervals. , The strength of which is lower than that of the portion other than the cutting line 50.

Therefore, a separation portion 52 that can be separated from the PET bottle 10 can be formed between the parallel cutting lines 50. The concave portion 51 is formed by a projection (both not shown) protruding from a mold frame during injection blow molding of the PET bottle 10.

The peeling portion 52 is provided at one end thereof with a grip portion 53 which can be gripped at one end and pulled out to peel from the PET bottle 10.
As shown in the above, in the present embodiment, two portions are provided at symmetrical positions on the lower side of the body portion 30.

FIG. 3 is an enlarged explanatory view of a portion C in FIG.
FIG. 3A is a cross-sectional view taken along line DD of FIG. Gripper 5
3 is a depression 3 which is recessed in the body 30 as shown.
1 is protruded from the inside toward the outside of the plastic bottle 10, and three sides where the depressed portion 31 and the grip portion 53 are connected to each other,
The above-described cutting line 50 is formed.

The end 54 of the grip 53 is formed to have a height lower than the outer peripheral surface 11 of the body 30 as shown in FIG.
When transporting 0, it is formed so as to prevent the gripping portion 53 from being inadvertently peeled off due to contact with other portions.

Next, the PET bottle 1 having the above configuration
A method of disassembling 0 will be described. First, in FIG.
The end portion 54 provided at the portion C is pushed into the container inward (in the direction of arrow G in FIG. 3A) with a predetermined force by a finger or the like. As a result, the end portion 54 breaks from the cutting line 50 and becomes a free end, and forms the grip portion 53.

Then, the holding portion 53 is gripped by a finger or the like and pulled outward (in the direction H in FIG. 3A), whereby the peeling portion 52 is sequentially broken at the cutting line 50, It is peeled off from the bottle 10. This allows
The cutting line 50 is peeled to the opposite position in the circumferential direction of the body 30, and is continuously peeled therefrom in the direction of the bottle mouth 20, that is, upward. As a result, the PET bottle 10 is shown in FIG.
Is divided as shown in FIG.

According to the disassembly method described above, the plastic bottle 1
0 can be easily divided and dismantled. Accordingly, when the PET bottle 10 is discarded, the PET bottle 10 can be separated and disassembled and stacked, and can be efficiently disposed without being bulky.

In recent years, a method has been used in which a plastic material is regenerated by melting and pelletizing the PET bottle 10 to recycle it as a product using another resin material. Also, by using the plastic bottle 10 to which the present invention is applied, it is possible to regenerate it at low cost.

That is, the disassembly of the PET bottle 10 exposes the inside thereof to the outside, so that the inside can be easily washed, and the cost required for washing the inside required for pelletizing and regenerating. Can be reduced.

Next, a second embodiment of the present invention will be described. A characteristic of the present embodiment is that the peeling portion 52 in the above-described first embodiment is made of a different material from the plastic bottle 10. Figure 5
This embodiment will be described below with reference to FIG.

FIG. 5 is an overall explanatory view showing the PET bottle 10 in the present embodiment from a perspective direction, and FIG.
FIG. 6A is a cross-sectional view taken along line DD of FIG. 5, and FIG. 6B is a cross-sectional view of FIG. The same components as those in the above-described first embodiment are denoted by the same reference numerals, and a detailed description thereof will be omitted.

As shown in FIG. 5, the PET bottle 10 has the peeling portion 52 at the same position as in the first embodiment. As shown in FIG. 6 (a), the material of the peeling portion 52 is polyethylene terephthalate (PET) while the material of the PET bottle 10 is polyethylene terephthalate (PET). And a mixed material mixed at a predetermined ratio.

These celite, alumina, silica gel and the like are incompatible materials which are not compatible with polyethylene terephthalate, and have lower strength than polyethylene terephthalate. Therefore, the peeling part 52 is configured to have a lower strength than the other parts such as the bottle mouth part 20, the body part 30, and the bottom part 40, and forms the cutting line 50.

As a manufacturing method of the PET bottle 10 having such a peeling portion 52, an injection blow molding method or a heat-sealing method in which a half-split state is made to face in two directions and a cutting line 50 is interposed therebetween. There is a way to do it. Injection blow molding is a method in which a parison having a closed bottom is first formed by injection molding, and the parison is immediately transferred to a blow mold and air is blown to obtain a molded product.

In this case, at the time of injection molding, the material of the cutting line 50 is preliminarily mixed with the molding material so that the cutting line 50 has the above-mentioned shape after molding. By doing so, it is formed in the shape as described above.

A method of heat-welding the PET bottle 10 in a half-split state is to melt the two joining surfaces in the half-split state of the packaging container by heat, and to connect a cutting line 50 mixed with celite, alumina, silica gel or the like. It is to be welded as an adhesive. With these manufacturing methods, the PET bottle 10 including the cutting line 50 can be easily manufactured.

The PET bottle 10 having the cutting line 50 formed as described above can be cut in the same manner as in the first embodiment. In the present embodiment, the holding portion 53 is provided in the bottle mouth portion 20, and FIG.
By separating the peeling portion 20 from above, the PET bottle 10 is divided as shown in FIG. Therefore, similarly to the first embodiment and the operation and effect, it is possible to efficiently dispose of the waste without being bulky.

Further, in the present embodiment, the disassembly method of the PET bottle 10 is the same as that of the first embodiment.
2 may be used, but as another method,
A method of breaking the PET bottle 10 by breaking the PET bottle 10 at the peeling section 52 may be used. FIG. 7 shows a state diagram of the PET bottle 10 divided by this method.

In this embodiment, the peeling section 52 is formed by the first
Although the concave portions 51 are not continuously formed at predetermined intervals as in the embodiment, they may be formed. Thereby, the peeling part 5
A greater difference in strength can be provided between the plastic bottle 2 and the plastic bottle 10, and the peeling portion 52 can be more easily peeled from the plastic bottle 10.

Furthermore, in the first and second embodiments described above, the plastic bottle 10 is divided into three parts and disassembled. However, the present invention is not limited to this, and the plastic bottle 10 is not limited thereto.
It is only necessary to disassemble the 0 so as not to be bulky when discarding the 0, and the shape of the cutting line 50 can be freely changed according to the shape to be cut.

For example, as shown in FIG. 8, the peeling portion 52 may be provided in the body 30 of the plastic bottle 10 in a spiral shape in the circumferential direction. According to this example, the plastic bottle 1 after dismantling
0 can be made into almost one sheet.

In each of the above embodiments, a plastic bottle made of polyethylene terephthalate has been described as an example of a packaging container. In addition, a plastic bottle made of, for example, a shampoo container or the like may be used. Also, the same operation and effect as those of the above-described PET bottle can be obtained.

[0043]

As described above, according to the packaging container of the present invention, the PET bottle can be easily disassembled without using a special device. Therefore, it does not take up bulk when discarded, and can be discarded collectively.

[Brief description of the drawings]

FIG. 1 is an overall explanatory view showing a PET bottle to which the present invention is applied, viewed from a perspective direction.

FIG. 2 is a sectional view of a main part of FIG.

FIG. 3 is an enlarged explanatory view of a portion C in FIG. 1;

FIG. 4 is an explanatory view showing a disassembled state of the PET bottle of FIG. 1;

FIG. 5 is an overall explanatory view showing a PET bottle 10 according to a second embodiment from a perspective direction.

FIG. 6 is an explanatory sectional view of a main part of FIG. 5;

FIG. 7 is an explanatory view showing a state after disassembly of the PET bottle.

FIG. 8 is an explanatory diagram showing another embodiment to which the present invention is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 PET bottle (resin material container) 20 Bottle mouth part 30 Body part 40 Bottom part 50 Cutting line 52 Peeling part

Claims (9)

[Claims] 1. A container made of a resin material, wherein a cutting line for dividing the container is formed so as to be weaker than other parts. 2. The container according to claim 1, wherein one or more cutting lines are provided in a direction in which the container is vertically divided. 3. The container according to claim 1, wherein one or more cutting lines are provided in a direction of cutting the container. 4. The cutting line according to claim 1, wherein one or two or more sets of the cutting lines are provided as one set.
A container according to claim 1. 5. The container according to claim 1, wherein the cutting line is formed to be thinner than other portions. 6. The container according to claim 1, wherein the cutting line has a predetermined width and is formed to have a small thickness at predetermined intervals in a length direction. 7. The container according to claim 1, wherein the cutting line is formed by mixing a resin material used for the container and an incompatible material. 8. When polyethylene terephthalate is used for the other portion, the cutting line is formed by mixing celite, alumina, and silica gel with polyethylene terephthalate. The container according to any one of claims 1 to 7. 9. The cutting line is formed by mixing celite, alumina, and silica gel with polypropylene when the other portion is made of polypropylene. 9. The container according to 8.