JP3847427B2 - Synthetic resin single wall thin container - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a single-walled thin-walled container made of synthetic resin in which one half of a container body is formed thinner than the other half.
[0002]
[Prior art]
Refill containers made of synthetic resin for refilling liquids such as liquid ejectors are made relatively thick to increase strength and rigidity. However, it is better to reduce the material by making it as thin as possible. This will contribute to resource saving and is desirable from the environmental point of view.
In addition, the container is filled with the contents at the shipping destination, but the container is rigid and cannot be deformed, and has the same configuration as after the filling even before filling. Was bad. Thus, recently, some bags are used as containers for replenishing contents such as liquids.
[0003]
[Problems to be solved by the invention]
However, the bag has the following disadvantages.
{Circle around (1)} Since the bag has a small rigidity and does not have a mouth-and-neck portion, it is not easy to fill the contents such as liquid, and therefore the filling speed is slow.
(2) Since the rigidity is small, there is a risk of falling when the content is reduced.
(3) Since the rigidity is small, it is difficult to hold and therefore difficult to handle when replenishing the contents of this product.
{Circle around (4)} Since the rigidity is small and the mouth / neck portion is not provided, the cap cannot be used. For this reason, the contents spill out from the bag when it falls down.
(5) The form of the bag is fixed, and since the range of shape selection is small, the design is limited to one type.
(6) In order to give a certain degree of rigidity, an aluminum thin plate must be laminated on a synthetic resin material, which is expensive.
(7) Bags with laminated aluminum sheets are difficult to tear and are inconvenient to dispose of.
[0004]
The synthetic resin single-walled thin-walled container according to claim 1 is provided with rigidity by forming one half part of the container body into a thin-walled part and the other half part into a thick-walled part having rigidity, and the width of the container in the left-right direction. It is greatly reduced, and the containers can be fitted to each other at the time of shipment to enable stacking, and further, the mouth and neck portion and the filling space can be formed to improve the content filling speed.
[0005]
The synthetic resin single-walled thin-walled container according to claims 2 and 3 is configured such that a cap can be attached and the cap can be closed any number of times by forming a male screw on the mouth and neck.
[0006]
[Means for Solving the Problems]
As a first means, the cross-sectional shape to occlude the peripheral wall 2 the lower surface of the elongate in the longitudinal direction, in containers upright neck 3 via a shoulder from the peripheral wall 2 upper end of the container body 1 neck 3, to form the respective right and left direction one-half of the peripheral wall 2 and the bottom wall to the thin portion 4 having flexibility, and to form the other half of the thick portion 5 having a rigid, thin-walled portion 4 and the thick A step with the part 5 was formed on the inner surface of the container body 1 .
[0007]
As a second means, in addition to the problem to be solved by the first means, a male screw 6 for cap screwing is formed on the outer surface of the mouth-and-neck part 3, and the outer-neck part of the mouth-neck part 3 on the thin-walled part 4 side. The male screw for cap screwing was removed.
[0008]
As a third means, in addition to the problem to be solved by the first means, a male screw 6 for cap screwing is formed on the outer surface of the mouth-and-neck part 3, and the outer-neck part of the mouth-neck part 3 on the thin-walled part 4 side. The cap screwing male screw was removed at a plurality of locations at predetermined intervals in the circumferential direction.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
1 and 2, reference numeral 1 denotes a container body, and the container body peripheral wall 2 has a cross-sectional shape that is elongated in the front-rear direction, and in the illustrated example, a rectangular shape in which the vertical sides of the vertically long rectangle are curved outwardly is formed. To do. Then, the lower surface of the peripheral wall 2 is closed with the bottom wall, and the mouth and neck 3 is erected from the upper end of the peripheral wall 2 through the shoulder.
[0010]
The left-right part of the container body 1 which concerns on the said structure, ie, the left side part of the container body 1 including each left half of the mouth neck part 3, the surrounding wall 2, and the bottom wall is formed in the thin part 4 which has flexibility. At the same time, the other half of the container body 1 in the left-right direction, that is, the right part of the container body 1 including the right and left half of the mouth / neck part 3, the peripheral wall 2 and the bottom wall is formed in the thick part 5 having rigidity. . Even if the container body 1 is formed of the thin wall portion 4 and the thick wall portion 5 in this way, the outer surface of the boundary portion of both is made flat and the step is generated on the inner surface of the boundary portion.
[0011]
In addition, a male screw 6 for cap screwing is formed on the outer surface of the mouth and neck portion 3, and the male screw for cap screwing is formed only on the thick neck side neck portion 3. In this way, the male screw 6 for screwing the cap is formed only on the half of the mouth-and-neck portion 3 as described in claim 2, or the male screw formed on the mouth-and-neck portion on the thin wall side is removed as described in claim 3. However, it is possible to remove only a plurality of locations at predetermined intervals in the circumferential direction, but in any case, a cap with a female screw (not shown) is formed so as to be able to be screwed into the mouth-and-neck portion 3. .
[0012]
A synthetic resin material is used for the material of the container body 1 and is integrally formed by blow molding. The thickness of the thin portion 4 may be in a range that is flexible and can be deformed. On the other hand, the thickness of the thick portion 5 does not cause the container body to fall even if the content such as liquid decreases. However, if a specific numerical value is listed as a rough standard, the thickness of the thin portion 4 is about 0.15 to 0.3 mm, and the thickness of the thick portion 5 is It is about 1-2 mm.
[0013]
Next, the operation of this embodiment will be described.
At the time of shipment, the thin-walled portion 4 is pushed into the thick-walled portion 5 from the state shown in FIG. 1 to form a double-walled half container as shown in FIGS. Next, the other half-divided container body is fitted into one half-contained container body. By repeating this, a large number of container bodies are stacked and shipped in a stacked state.
[0014]
When the contents such as liquid are filled at the shipping destination, the thin portion 4 is pulled out of the thick portion 5 and the discharge port of the filling device (not shown) is made to face the mouth neck portion 3. Then, after filling, a cap with a female screw (not shown) is screwed into the neck 3.
In this state, the product is handed over to the consumer. The product is replenished by removing the cap and holding the thick portion 5 and inverting the container. If the contents remain in the container after refilling, close the cap with a cap. After closing, it may be stored in an appropriate place, but since the thick portion 5 has rigidity, it can be placed on the floor surface by a container alone and held in an upright state.
[0015]
【The invention's effect】
The synthetic resin single wall thin container according to claim 1 has the following effects.
(1) Since one half of the container body is formed into a thin part, it is possible to reduce the material and save resources, and also to reduce the weight of the container.
(2) The thin wall portion is flexible and can be pushed into the thick wall portion. Therefore, the lateral width of the container body can be greatly reduced, and space saving can be achieved.
(3) Since the thin part can be pushed into the thick part, another container can be fitted to one container at the time of shipment and the container can be stacked, which improves the transportation efficiency at the time of shipment. To do.
[0016]
(3) The thin part can be easily broken because it can be easily broken.
{Circle around (4)} The neck portion can be formed because it has a thick portion, and it can be easily held because it has rigidity, so that the filling speed of the contents can be increased.
[0017]
(5) Since the thick part has rigidity, it will not fall down even if the contents are reduced.
{Circle around (6)} The thick wall portion is rigid and easy to hold. Therefore, the product is easy to handle when the contents are replenished.
(7) Since the thick portion has rigidity, it can take various forms, and therefore the degree of freedom in design selection increases.
(8) There is no need to use a metal such as aluminum in order to increase the rigidity, and therefore low cost can be realized.
[0018]
The synthetic resin single-walled thin-walled container according to claims 2 and 3 can be fitted with a cap because it has a male screw for the cap at the mouth and neck, and can be closed any number of times.
[Brief description of the drawings]
FIG. 1 is a partially cutaway perspective view showing a synthetic resin single wall thin container according to the present invention.
2 is a cross-sectional view showing the cross-sectional shape of the peripheral wall shown in FIG.
FIG. 3 is a perspective view showing a state where the thin wall portion is pushed into the thick wall portion.
4 is a cross-sectional view showing the cross-sectional shape of the peripheral wall shown in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Container body 2 Perimeter wall 3 Mouth neck part 4 Thin part 5 Thick part 6 Male screw for cap screwing

Claims (3)

In the container in which the cross-sectional shape closes the lower surface of the elongated peripheral wall 2 in the front-rear direction and the mouth and neck 3 is erected from the upper end of the peripheral wall 2 through the shoulder , the mouth neck 3, the peripheral wall 2 and the bottom of the container body 1 One half of each of the walls in the left-right direction is formed in the thin portion 4 having flexibility, and the other half is formed in the thick portion 5 having rigidity, and a step between the thin portion 4 and the thick portion 5 is formed. A synthetic resin single-walled thin-walled container formed on the inner surface of the container body 1 . The male screw 6 for cap screwing is formed on the outer surface of the mouth and neck part 3, and the male screw for cap screwing of the outer part of the mouth neck part 3 on the thin wall 4 side is removed.
The single-walled thin-walled container made of synthetic resin according to claim 1. A male screw 6 for cap screwing is formed on the outer surface of the mouth neck portion 3 and the male screw for cap screwing on the outer surface of the mouth neck portion 3 on one half of the thin wall portion 4 side is removed at a plurality of locations at predetermined intervals in the circumferential direction. ,
The single-walled thin-walled container made of synthetic resin according to claim 1.

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