JP2002104509A - Composite container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a composite container which is easy and efficient to handle in processes from molding to filling contents and in a waste disposal process, and to reduce a cost by causing a synthetic resin bottle reducible in volume and deform in an easy and restorable manner. SOLUTION: The composite container comprises a synthetic resin bottle body 1 with a main part of a barrel 4 except an upper end 5 and a lower end 6, formed as a thin wall 7 which can be easily reduced in volume and also can be restored to its original form by circumferentially twisting and longitudinally compressing, wherein the upper end 5 and the lower end 6 can be formed to be fitted with each other with a part of the thin wall 7 interposed therein. The composite container also comprises a paper cylinder 11 which is fitted over the barrel 4 with the thin wall 7 restored for keeping the restored state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite container in which a paper cylinder is externally mounted on a synthetic resin bottle body which can be deformed so as to be capable of being restored and reduced in volume.

[0002]

2. Description of the Related Art As containers for various liquid contents, synthetic resin bottles formed by blow molding or biaxial stretch blow molding are widely used.

As described above, synthetic resin bottles are frequently used, but recently, in response to the demand for resource saving, thinner walls and lighter weight have been promoted.

[0004]

However, this synthetic resin thin-walled bottle remains bulky and occupies a large space, and is therefore molded by a container manufacturer before being delivered to a product manufacturer. In the process of filling the content liquid, its storage cost and transportation cost are high, and its body is easily bent and deformed.
There was a problem that handling was troublesome.

[0005] After use, in order to facilitate the disposal process, it is usually required to have the minimum rigidity required for practical use as a container when crushing by hand or foot to reduce the volume. Therefore, there is a problem that not everyone can easily and surely achieve the crushing.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems in the prior art, and enables a synthetic resin bottle to be easily and reproducibly reduced in volume and deformed. The technical task is to demonstrate the rigidity that can obtain a gripped state, and to make the process from molding to filling of the content liquid and the disposal process easy and efficient, and reduce the cost. With the goal.

[0007]

Means for Solving the Problems Of the present invention for solving the above technical problems, the means according to the first aspect of the present invention is characterized in that:
The main body except the upper end and the lower end is formed into a thin wall which can be easily reduced in volume by being twisted in the circumferential direction and compressed in the vertical direction, and which can be restored to its original shape. Having a synthetic resin bottle main body formed so as to be fittable with a part of the thin wall portion sandwiched therebetween, and externally fitted to the body portion of the bottle main body with the thin wall portion restored. And a paper cylinder that holds the restored state.

[0008] The bottle body molded by the container maker is twisted so as to squeeze the body, thereby reducing the diameter of the thin wall portion in a twisted manner, and then compressing the thin wall portion in the vertical direction, thereby reducing the diameter of the bottle. The wall is bent up and down and the upper end of the trunk is fitted to the lower end of the trunk to maintain the reduced volume state (FIG. 3).
Hereafter, it is handled in this reduced volume state and delivered to the product maker.

[0009] In a product maker, the bottle body in the reduced volume state is twisted while being stretched by stretching in the vertical direction.
After the thin wall portion is restored to its original shape at the time of molding, a paper cylinder is externally fitted to the body portion to maintain the restored shape, and thereafter, the content liquid is filled and supplied to the product.

After use of the container, after removing the paper cylinder by breaking or the like, the bottle main body is again twisted and compressed up and down to reduce the volume of the thin wall portion and to reduce the volume of the thin wall portion. The lower end portion is fitted to hold the reduced volume state, and the disposal process is performed.

According to a second aspect of the present invention, in the first aspect of the present invention, the thickness of the thin wall portion of the bottle main body is not more than 2/3 of the thickness of the upper portion and the lower portion of the thin wall portion. It is a thing which added so that it was constituted so that it might become.

According to the second aspect of the present invention, the volume reduction deformation of the thin wall portion due to the twisting and the vertical compression of the bottle main body can be performed more stably, stably, and more easily. Can be achieved.

According to a third aspect of the present invention, in the first aspect of the present invention, a step is formed on one of the outer peripheral surfaces of the upper end portion of the trunk and the lower end portion of the trunk, the end portion of the paper cylinder abutting on the other end. On the outer peripheral surface of the paper cylinder body, a locking projection for locking in a locking hole formed at an end of the paper cylinder body is provided.

According to the third aspect of the present invention, the external fitting of the paper cylinder to the bottle main body can be easily, reliably and stably achieved, and the bottle main body formed by the paper cylinder is provided. Is stably and reliably achieved and maintained.

According to a fourth aspect of the present invention, in addition to the first aspect of the present invention, the weight of the paper cylinder is made larger than the weight of the bottle body.

According to the fourth aspect of the invention, since the weight of the paper cylinder is made larger than that of the bottle body, the rigidity of the paper cylinder can be sufficiently increased, and the rigidity of the paper cylinder is increased. Thereby, the function as a container is stably exhibited.

Further, since the rigidity required of the container is exhibited by the paper cylinder, the bottle main body only needs to exhibit the function of storing the content liquid, and accordingly, the amount of synthetic resin material required for the bottle main body is reduced. Since the number of containers can be reduced, disposal of the container becomes easy.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. The bottle body 1 is formed by erecting a mouthpiece portion 2 via a conical shoulder portion 3 on the upper end of a bottomed octagonal tube-shaped body portion 4 by blow molding of an appropriate synthetic resin material or the like. .

The upper end 5 and the shoulder 3 of the body 4 of the bottle body 1 and the lower end 6 and the bottom of the body 4 are each formed to have a normal thickness. The four main portions are formed into a thin wall portion 7 having a thickness of 2/3 or less of the thickness of the above portions, whereby the main portion can be easily twisted in the circumferential direction and compressed in the vertical direction. It can be crushed and bent and can be easily restored to its original shape.

The peripheral edge of the lower end of the shoulder portion 3 is made to protrude beyond the outer peripheral surface of the upper end portion 5 of the body portion to form a step 8 on the lower surface thereof. The protrusions 9 are formed at four equally spaced locations in the circumferential direction. Note that the vertical positional relationship between the step portion 8 and the locking projection 9 may be reversed.

The upper part of the lower end portion 6 of the body 6 above the locking projection 9 is formed in a fitting portion 10 reduced in diameter to a predetermined outer diameter. When the volume is reduced, as shown in FIG. The fitting portion 10 is fitted to the upper end portion 5 of the body with the upper end portion of the thin wall portion 7 interposed therebetween so as to maintain this reduced volume state.

The paper cylinder 11 is fitted around the body 4 of the bottle main body 1 and is made of paper material so as to exhibit sufficient strength to maintain the restored shape of the bottle main body 1 and high self-shape holding ability. Is sufficiently formed into a cylindrical shape having high rigidity, and a locking hole 12 which can be locked to each locking projection 9 of the bottle main body 1 is provided at a lower end thereof with a circumferentially equal quarter. It is established in places.

The paper cylinder 11 is fitted to the body 4 from the bottom of the bottle body 1 in a state where the thin wall portion 7 is restored to its original shape, and the upper end surface thereof is fitted to the step 8 of the bottle body 1. By abutting and locking each locking hole 12 with each locking projection 9 of the bottle main body 1, the bottle main body 1 is easily assembled so as not to come out (see FIG. 1).

In the present invention, the body 4 of the bottle body 1 may be formed in a polygonal cylindrical shape or a cylindrical shape other than an octagon, and the body upper end 5 is formed of the thin wall 7. The lower end portion may be sandwiched between the lower end portion 6 of the body portion, and when the locking projection 9 is provided on the upper end portion 5 of the body portion, the locking hole 12 may be inserted into the paper cylinder. The paper cylinder 11 is provided at the upper end of the body 11, and the paper cylinder 11 is fitted over the bottle main body 1 from above.

[0025]

Since the present invention has the above-described structure, the following effects can be obtained. The bottle body molded by the container manufacturer reduces the volume by deforming the thin wall part by twisting in the circumferential direction and compressing in the vertical direction, and fitting the upper part of the body and the lower part of the body to reduce the volume. After that, the occupied space can be greatly reduced, so that storage, transportation, etc. in the process until the content liquid is filled can be achieved. Can be reduced, and handling can be performed easily and efficiently.

After use of the container, after removing the paper cylinder, the bottle body is again twisted and compressed up and down to reduce the volume of the thin-walled portion, and at the same time to reduce the volume of the thin-walled portion, as well as the upper and lower ends of the body. Can be kept in a reduced volume state and can be disposed of, so that anyone can easily and surely achieve the volume reduction deformation of the bottle body after use. Disposal can be easily and smoothly performed.

Since the rigidity for obtaining a stable gripping state can be obtained not by the bottle main body but by the paper cylinder, resource saving of the bottle main body can be further promoted and volume reduction by hand. Conversion processing becomes easy.

[Brief description of the drawings]

FIG. 1 is a half-vertical overall side view showing an embodiment of the present invention.

FIG. 2 is an overall plan view of the embodiment shown in FIG.

FIG. 3 is a semi-longitudinal side view showing a reduced volume state of the bottle main body in the embodiment shown in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1; Bottle main body 2; Muzzle part 3; Shoulder part 4; Trunk part 5; Trunk top part 6; Trunk bottom part 7; Cylindrical body 12; locking hole

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Shinji Shimada 3-2-6 Oshima, Koto-ku, Tokyo Inside the Yoshino Kogyosho Co., Ltd. (72) Inventor Takao Kurosawa 3-2-2, Oshima, Koto-ku, Tokyo Shares (72) Inventor Shigeru Hayakawa 3-2-6 Oshima, Koto-ku, Tokyo F-term (reference) 3E061 AA24 AB09 DA06 DA09 DB11 3E067 AA03 AB26 BA01C BA14B BB02C BB14B BC03B BC03C BC07B CA30 EA18 EB27 ED03 EE45 FA04

Claims (4)

[Claims] The main body of the body (4) except for the upper end (5) and the lower end (6) can be easily reduced in volume by twisting in the circumferential direction and compressing in the vertical direction. And a thin wall portion (7) which can be restored to its original shape, and the upper end portion (5) and the lower end portion are formed.
(6), a synthetic resin bottle body (1) formed so as to be fittable with a part of the thin wall portion (7) sandwiched therebetween, and a state in which the thin wall portion (7) is restored. And a paper cylinder body (11) that is fitted to the body (4) of the above and retains its restored state. 2. The thickness of the thin wall portion (7) of the bottle body (1) is 2 / th of the thickness of the upper and lower portions of the thin wall portion (7).
The composite container according to claim 1, wherein the composite container is formed so as to have a diameter of 3 or less. 3. A stepped portion (8) to which an end surface of a paper cylinder (11) abuts is formed on one outer peripheral surface of a body upper end portion (5) and a body lower end portion (6), and the other outer periphery is formed. The composite container according to claim 1 or 2, wherein a locking projection (9) for locking in a locking hole (12) formed at an end of the paper cylinder (11) is provided on the surface. 4. The composite container according to claim 1, wherein the weight of the paper cylinder (11) is larger than the weight of the bottle body (1).