JP3462934B2 - Thin resin sealed container made of synthetic resin - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin thin-walled hermetically sealed container, and more particularly to an inexpensive and simple synthetic resin thin-walled hermetically sealed container for storing a refilling content liquid and then discarding the refilled liquid.

[0002]

2. Description of the Related Art Liquid soaps, shampoos, body soaps, and other contents liquids are pumped so that a simple and stable pouring operation and a substantially constant pouring amount can be obtained by a single pouring operation. Most of them are stored in a container having a pouring function, which is represented by an apparatus. However, not only is the price of a container having this pouring function high, but also after the entire content liquid is poured out. However, since it usually retains its normal pouring capacity, it is not only uneconomical to dispose of this container after the content liquid is used up, but also the purchase price of the content liquid. However, there is an inconvenience that it becomes unnecessarily high.

In order to solve this inconvenience, the content liquid for refilling is stored in an inexpensive disposable container, and the content liquid for refilling can be purchased at a price that requires almost no container cost.

The container for storing the refilling content liquid is
Requests that it can be molded inexpensively and easily, that the content liquid is tightly sealed and stored, that it can be displayed as a product, and that the pouring operation of the content liquid for refilling can be achieved easily and stably. Need to meet.

As one of the typical examples of the conventional synthetic resin hermetically sealed container for storing the refilling content liquid satisfying this demand, the one shown in FIG. 4 has a bottomed tubular barrel whose bottom end is closed by a bottom plate 7. At the upper end of 2, a top plate 5 is continuously provided so as to be capable of reversing and projecting, and at the center of the top plate 5, a pouring tube 6 having an upper end closed with a projection height smaller than the depth of depression at the center of the top plate 5 is erected. The entire structure is thin.

In the conventional example shown in FIG. 4, since the upper end of the spout cylinder 6 is opened by cutting it with scissors or the like, the function of hermetically storing the content liquid is high, and the bottom plate 7 is provided.
Since the seat is good as a seat, it can be stably displayed at the store, and since the entire structure is simple and can be molded from a sheet material, the entire container can be manufactured at low cost, Further, at the time of pouring out the content liquid, the top plate 5 is inverted and deformed, and the upper end of the protruding pouring tube 6 is cut off.
Since the content liquid is poured out from the container, it has an advantage that the content liquid for refilling can be easily and stably achieved.

[0007]

However, in the above-described conventional example, when the internal gas expands and the internal pressure of the container rises as the ambient temperature rises, the raised internal pressure can be inverted and deformed. As shown in FIG. 5, the top plate 5 is bulged and deformed, and the bulging deformation of the top plate 5 causes a deformation in which the upper end edge of the pouring tube 6 projects above the upper end edge of the body tube 2. generate.

[0008] In this way, when the deformation occurs in which the upper end edge of the spout cylinder 6 projects above the upper end edge of the barrel cylinder 2, not only the appearance of the container as a product deteriorates but also the containers are closely arranged. There is a problem that the containers may be broken in the storage and transportation state, and in the state where the containers are stacked and displayed, the containers cannot be stacked and the load collapses.

Therefore, the present invention was devised to solve the above-mentioned problems in the prior art. A sealed pouring cylinder is erected at the center of the top plate and is projected upward by the inverted projection deformation of the top plate. In a sealed container that cuts and opens the pouring cylinder to achieve the pouring of the content liquid, it is a technical issue to prevent the occurrence of unauthorized deformation in the projecting direction due to the internal pressure of the top plate capable of reversing projecting and deforming. The purpose of the invention is to prevent the appearance deterioration of a container as a product and to prevent the collapse of the container due to the internal pressure and the collapse of the load in the stacked state.

[0010]

In order to solve the above-mentioned technical problems, the invention according to claim 1 of the present invention is such that the upper end of a bottomed barrel-shaped barrel whose bottom end is closed by a bottom plate is turned upside down. A top plate is continuously arranged so as to be capable of projecting and deforming, and at the center of the top plate, a pouring tube is opened which is opened by cutting off a closed upper end having a protrusion height smaller than the depth of depression at the center of the top plate. Shi
A synthetic resin thin-walled container comprising
It is necessary for the top plate (5) to invert and deform in part of
Surrounding the bellows wall (4) that expands and deforms with internal pressure weaker than internal pressure
In addition, the internal volume increases due to the expansion deformation of the bellows wall (4).
Increase the internal volume by increasing the top plate (5)
Set to a value equal to or greater than the weight
That's right.

According to a second aspect of the present invention, in the structure of the first aspect of the invention, the installation location of the bellows wall portion is a short tubular leg tubular portion in which the lower end portion of the barrel is expanded. The cylinder wall of the leg cylinder is used as the installation location of the bellows wall.

[0012]

The invention according to claim 3 is the same as claim 1 or
The entire structure of the invention described in 2 includes a main body which is an integrally formed body, a bellows wall, a top plate and a spout cylinder, which is press-molded from a synthetic resin sheet body, and a lower end opening of the main body. It is composed of a thin plate-like bottom plate that is welded and sealed.

The invention according to claim 4 is the invention according to claim 1 or 2.
Alternatively, in the configuration of the invention described in 3 , the main body has a tapered tubular structure in which the barrel is expanded downward, and the leg tubular portion having the bellows wall portion functions as a stack portion. .

[0015]

According to the invention as set forth in claim 1, when the ambient temperature is within the normal temperature range (around 20 degrees) and the gas in the container is not expanded, the protrusion height of the pouring cylinder is more than the depression depth of the central portion of the top plate. Since it is also small, it can be placed upright without the upper edge of the pouring tube protruding upward from the upper edge of the barrel.

From this state, when the environmental temperature of the container rises above the normal temperature range and the internal pressure of the container rises due to the expansion of the gas in the container, the internal pressure weaker than the internal pressure necessary for the top plate to reverse and project. The bellows wall portion, which is stretched and deformed by, is stretched and deformed prior to the occurrence of the reverse protrusion deformation of the top plate.

When the bellows wall portion expands and deforms, the inner volume of the container increases and the rise of the internal pressure is suppressed. Therefore, the rise of the internal pressure of the container causes the bellows wall portion to expand and deform so that the top plate is inverted and deformed. The upper end edge of the spout barrel does not project above the upper end edge of the barrel barrel until it is raised.

Further, since the internal volume increase amount due to the extension deformation of the bellows wall, that is, the lower limit of the internal pressure absorption capacity is set,
In the conventional container of this type, although the top plate is erroneously inverted and protruded and deformed, the container is not broken due to the further increase of the internal pressure. Therefore, the reverse protrusion and deformation of the top plate substantially suppresses the unnecessary increase of the internal pressure. Therefore, it is possible to make the bellows wall by increasing the internal volume increase due to the extension deformation of the bellows wall equal to or larger than the internal volume increase due to the inverted protruding deformation of the top plate. It is possible to sufficiently suppress the increase of the internal pressure due to the elongation deformation of the wall portion.

According to the second aspect of the present invention, since the bellows wall portion is provided on the leg tube portion having the enlarged diameter at the lower end portion of the barrel, the increase in the internal volume of the container due to the extension deformation of the bellows wall portion is large. As a result, the force for suppressing the increase in internal pressure due to the expansion deformation of the bellows wall portion becomes large, and since the bellows wall portion is provided on the leg cylinder portion located at the lower end portion of the container, the appearance of the bellows wall portion can be improved. The influence on the body is reduced, and the entire other barrel portion can be effectively functioned as a display portion for label sticking or printing without being obstructed by the bellows wall portion.

According to a third aspect of the present invention, the container is composed of a main body which is an integral body of the barrel, the bellows wall portion, the top plate and the spouting cylinder, and a thin flat plate bottom plate. By using pressure molding means such as molding or vacuum molding, it is possible to mold from a synthetic resin sheet material, so the main body can be manufactured easily and inexpensively, and the lower end opening of the main body with a large opening area Since it can be used as an inlet for filling the content liquid, the automatic filling process of the content liquid into the main body can be easily and stably achieved, and the bottom plate of the lower end opening of the main body is also sealed by a general welding sealing method. Achieved easily and reliably.

The invention according to claim 4 is the invention according to claim 1 or 2.
Alternatively, the main body of the invention described in 3 has a tapered tubular structure in which the barrel is expanded downward, and the leg tubular portion having the bellows wall portion functions as a stack portion. It is possible to fit and stack them in a state where they can be easily separated from each other and to handle them reliably, which makes it easy and stable to handle the main body in the device for automatically filling the main body with the content liquid.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view in which the right half in a normal state in which the content liquid is hermetically stored is cut vertically, and the container is composed of two parts, a main body 1 and a bottom plate 7.

The main body 1 has a short cylindrical leg tube portion 3 whose diameter is expanded at its lower end portion to function as a stack portion, and a tube wall of the leg tube portion 3 is formed as a bellows wall portion 4 and is expanded downward. A tapered plate-shaped top plate 5 having a diameter that is reduced downward is continuously connected to the upper end of a cylindrical body 2 having a tapered cylindrical shape so that it can be inverted and projected and deformed, and the center of the top plate 5 is depressed at the center of the top plate 5. It is constructed by vertically arranging a short cylindrical spout cylinder 6 with a protruding height smaller than the depth and a closed upper end. The whole is integrally molded from a synthetic resin sheet material by a pressure molding method. Has become.

The lower end of the main body 1, that is, the cylindrical wall, is connected to the bellows wall 4
At the lower end of the leg tube portion 3 molded into
When the base material is cut from the synthetic resin sheet material, a part of the synthetic resin sheet material remains on the main body 1 side, and the bottom plate 7 is welded and fixed to the main body 1. Is integrally shaped.

The bottom plate 7 has a simple flat disk shape formed of a synthetic resin sheet material for molding the main body 1 or other suitable synthetic resin material, and has an outer diameter of the flange 3a of the main body 1. It has the same diameter.

The sealed storage of the content liquid in the container composed of the main body 1 and the bottom plate 7 is carried out by injecting and filling a fixed amount of the content liquid into the main body 1 in the upright posture, and then the bottom plate 7 is attached to the flange 3 of the main body 1.
It is achieved by tightly welding and fixing to a.

When the sealed storage of the content liquid is carried out by an automatic device, the leg cylinder portion 3 functions as a stack portion, so that it is possible to obtain a good handling of the main body 1 in a fitted and stacked state. Improves the automatic processing of liquid-tight storage.

Since the bellows wall portion 4 is provided on the leg tube portion 3 at the lower end portion of the container, the bellows wall portion 4 is not disturbed by the bellows wall portion 4.
The outer surface of the barrel 2 that constitutes the main part of the container can function as it is as a display portion.

From the normal state of the container in which the content liquid is hermetically contained as shown in FIG. 1, the environmental temperature of the container rises (for example, rises from 20 ° C., which is room temperature, to 50 ° C.), and the expansion of the gas inside the container increases. When the internal pressure rises as a main component, the bellows wall portion 4 is stretched and deformed by this increased internal pressure (see FIG. 2) prior to the reverse protrusion deformation of the top plate 5 to suppress the increase of the internal pressure, and thus the top plate 5 is prevented. The occurrence of reverse protrusion deformation is prevented.

When the content liquid is replaced, the spout barrel 6 is picked up with a fingertip and pulled up, and the top plate 5 is inverted and deformed so as to project the spout barrel 6 (see FIG. 3). The upper end of the dispenser tube 6 is cut K with scissors or the like and opened, and the content liquid is poured out from the opened dispenser tube 6 to be refilled.

[0031]

Since the present invention has the above-mentioned structure, it has the following effects. The invention according to claim 1 is
Since a bellows wall portion that expands and deforms with an internal pressure weaker than the internal pressure required for the top plate to reverse and deform is provided in a part of the barrel,
It is possible to absorb and suppress the increase in the internal pressure of the container due to the environmental temperature change due to the expansion deformation of the bellows wall, which prevents the reverse protrusion deformation of the top plate, thus preventing the deterioration of the appearance of the container as a product. At the same time, it is possible to prevent the occurrence of breakage during storage and transportation, and to prevent the collapse of the stacked display.

Further, the lower limit of the stretch deformation of the bellows wall, by setting as a reference the inverted protrusion deformation amount of the top plate,
The bellows wall portion can stably obtain the effect of absorbing the internal pressure, and therefore the bellows wall portion can exert the wasteful top plate reversing protrusion deformation preventing action, and thus the container can be securely held.
Prevents damage, and the bellows wall expands excessively.
And even when the bellows wall is placed at the bottom, it is too large.
The expansion does not impair stability .

According to the second aspect of the present invention, since the bellows wall portion is provided on the leg cylinder portion at the lower end portion of the body cylinder having the expanded diameter, the bellows wall portion can be positioned at the lower end portion of the container. The bellows wall can be made inconspicuous as the appearance of the container, and the outer surface of the main body of the barrel, which constitutes the main body of the container, is effective as a display function portion without being obstructed by the bellows wall. Can be made to function.

According to the third aspect of the present invention, it is possible to advantageously achieve the molding of the container using the pressing molding means, whereby the container can be manufactured easily and inexpensively.

According to the fourth aspect of the present invention, the main body of the container molded by using the pressure molding means can be favorably handled in a fitted and stacked state (stacked state). It is possible to make the handling of the main body of the device good and stable.

[Brief description of drawings]

FIG. 1 is a right half vertical sectional front view in a normal state, showing an embodiment of the present invention.

FIG. 2 is a right half vertical sectional front view showing an internal pressure absorbing operation state in the embodiment shown in FIG.

FIG. 3 is a right half vertical sectional front view showing an unsealing processing state in the embodiment shown in FIG.

FIG. 4 is a right half vertical sectional front view in a normal state showing a conventional example.

5 is a right-half vertical sectional front view showing a state in which the top plate is deformed by improper projection in the conventional example shown in FIG.

[Explanation of symbols]

1; Main body 2; barrel 3; Leg section 3a; flange 4; Bellows wall 5; Top plate 6; dispensing cylinder 7; Bottom plate K; Cut

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-6-278744 (JP, A) JP-A-5-278737 (JP, A) Actually open 62-8949 (JP, U) Actually open 58- 59715 (JP, U) Actual opening 57-37827 (JP, U) Actual opening Flat 6-49345 (JP, U) Actual opening Flat 3-100788 (JP, U) Actual opening Flat 3-77900 (JP, U) Jikken 40-14714 (JP, Y1) (58) Fields investigated (Int.Cl. ⁷ , DB name) B65D 1/00 B65D 1/02 B65D 1/32 B65D 21/08 B65D 33/36

Claims (4)

(57) [Claims] 1. A bottomed cylindrical shape whose bottom end is closed by a bottom plate (7).
Top plate (5) that can be flipped upward and deformed at the upper end of the barrel (2)
), And the center of the top plate (5) is located at the center of the top plate (5).
The closed top with a protruding height that is less than the
Set up a pouring tube (6) that can be opened by cutting.Success
Synthetic resin thin sealed container The top plate (5) is inverted and deformed by a part of the barrel (2).
Bellows wall that expands and deforms with an internal pressure that is weaker than that required to
Around section (4), And the amount of increase in internal volume due to extensional deformation of the bellows wall (4)
Is the amount of increase in internal volume due to the inverted protrusion deformation of the top plate (5).
To a value greater than or equal to Synthesis
Thin, resin-sealed container. 2. A claim in which the lower end of the body tube (2) is a leg tube part (3) with an expanded diameter and the tube wall of the leg tube part (3) is a bellows wall part (4). Item 2. A synthetic resin thin-walled hermetic container according to Item 1. 3. A body (1) pressed from a synthetic resin sheet body, which is an integral body of a barrel (2), a bellows wall (4), a top plate (5) and a spout (6). The synthetic resin thin-walled hermetic container according to claim 1 or 2 , comprising a thin plate-like bottom plate (7) for welding and sealing the lower end opening of the main body (1). 4. The body tube (2) has a tapered tube structure that expands downward, and the leg tube section (3) having the bellows wall section (4) functions as a stack section so that the main body (1) is Claims constructed
1. A synthetic resin thin-walled hermetic container according to 1 or 2 or 3 .