JPH08198284A - Squeezing container - Google Patents

Abstract

PURPOSE: To provide an inexpensive squeezing container equipped with an outflow passage having self-closing properties opened by cutting a part of a container body and having self-restoring and self-supporting properties. CONSTITUTION: The base part of a cylindrical body 2 composed of a synthetic resin film member having elasticity and flexibility is welded to the mouth part 1a of a bottomed cylindrical container main body 1 formed of a synthetic resin and having compressible flexibility and elasticity. The upper end part of the cylindrical body 2 is sealed by a wide seal strip 2a formed by welding the film member so as to leave a self-closable outflow passage 4 composed of a non-welded part communicating with the interior of the container main body and closed at the leading end 4b thereof.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container in which a discharge port having a self-closing property is formed by cutting a part of a container, and a fluid such as shampoo, mayonnaise or lotion is pushed out by pressing the container. Regarding

[0002]

2. Description of the Related Art It has fluidity such as shampoo, mayonnaise, lotion, etc., and it is not carried after opening the container, but it is required to be sealed, and it can be used by extruding multiple times within a relatively short period of time. As an inexpensive container for finishing the process, a container is known in which a discharge port having a self-closing property is formed by cutting a part of the container body, and a fluid substance is discharged by a pressing operation of the container body.

Examples of such prior art containers include the "liquid sac" disclosed in Japanese Patent Publication No. 34-4536 and the "squeezable container" disclosed in Japanese Patent Application Laid-Open No. 59-209521. Are known.

The container disclosed in the above publication is formed into a sac shape using a synthetic resin film or a cardboard-like sheet, and has a self-closing closed outflow passage consisting of non-welded portions where the films and sheets are overlapped. The discharge port is formed by disconnecting the closed portion, and the outflow passage and the discharge port itself serve as an automatic closing valve.

[0005]

By the way, although these conventional containers can be manufactured at low cost and have a self-closing property in the discharge port and the outflow passage, they have a sac-like shape, and therefore, after being squeezed, the container body itself is compressed. It is poor in resilience and lacks independence, so it is inconvenient to use, and the product value is low because it is impossible to display in line at the store unless an external container or display device is used to stand upright. It is used as a product or as a small container that is discarded after being used a few times, but it is difficult to use as an independent product.

The present invention has been made in view of the above problems, and provides a simple automatic closing device in which a discharge port is opened and an outflow passage having a self-closing property is formed by cutting a part of a container body. It is possible to provide an inexpensive extruded container which is equipped with and is self-restoring and self-supporting.

[0007]

According to a first aspect of the present invention, there is provided an extruding container having a bottomed cylindrical container body having a squeezable flexibility and elasticity which is formed of a synthetic resin. A base portion of a tubular body made of a synthetic resin film member having elasticity and flexibility is welded, and an upper end portion of the tubular body communicates with the inside of the container body and includes a non-welded portion having a closed tip. It is characterized in that it is sealed by a wide sealing band formed by welding the film member while leaving an outflow passage having a closing property.

The extrusion container according to claim 2 of the present invention relates to the extrusion container according to claim 1, wherein the tubular body is welded to the inner peripheral wall of the mouth portion by an insert molding method. There is.

The extrusion container according to claim 3 of the present invention relates to the extrusion container according to claim 1 or 2, wherein the tip of the outflow passage is located at an upper end corner of the sealing band. Is characterized by.

[0010]

In the extruding container according to the first aspect, the sealing band is cut at the tip of the outflow passage with a blade to form a discharge port, and the container body is grasped and inverted to be squeezed and filled. When pressure is applied to an object, the outflow passage formed by the closely-fitting cylindrical body is expanded by the entry pressure of the fluid and automatically opens, and the fluid is pushed out from the outlet of the outflow passage.

When the squeezing to the container body is stopped and the pressure on the fluid disappears, the suction force associated with the elastic restoration of the container body is added to the elastic restoring force of the tubular body itself, and the outflow passage is self-closed. .

In the extrusion container according to the second aspect of the present invention, in addition to the above operation, the cylindrical body is welded to the inner peripheral wall of the mouth of the container body by the insert molding method, so that the welding step can be omitted. In addition, strong adhesion is possible, and the welded part does not appear outside the container.

In the pushing container according to the third aspect, in addition to the action of the first or second aspect, since the tip end portion of the outflow passage is located at the upper end corner portion which is a narrow region of the sealing band, the upper end is formed. The corner portion becomes a short cut portion that is easy to cut, and therefore, by cutting the upper end corner portion, it is possible to open while leaving the outflow passage having a stable length dimension.

[0014]

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

FIGS. 1 and 2 show a first embodiment of the extrusion container of the present invention. As shown in the drawings, the extrusion container of this embodiment comprises a bottomed cylindrical container body 1 and A cylindrical body 2 made of a synthetic resin film member, which is welded to the outer peripheral surface of the mouth portion 1a of the container body 1 and the upper end portion 2e is welded to form a sealing band 2a, is shown in FIG. The welded portions are indicated by cross hatched areas.

The container body 1 is made of a general-purpose synthetic resin material such as polyethylene, polypropylene or vinyl chloride, and has a self-restoring property having squeezing flexibility and elasticity, that is, squeeze property. There is.

A rib 1b for partitioning the welded portion 3 is provided around the outer peripheral surface of the mouth portion 1a of the container body 1, and the tip end portion of the mouth portion 1a is formed by the tubular body 2 during the container assembling work. It is formed with a taper toward the inside for easy mounting.

On the other hand, as the tubular body 2, a synthetic resin film member which has elasticity and flexibility having a desired thickness and hardness, and which can be welded to the container body 1 is selected, and is formed into a cylindrical shape having a predetermined size. Has been done.

In order to assemble the extrusion container of this embodiment, the tubular body 2 is fitted to the outer periphery of the mouth 1a of the container body 1 and the tubular body 2 is heated by using a well-known heat welding means such as a heating roller. The base end portion of the above is welded below the rib 1b of the container main body 1 to form the welded portion 3, and as shown in FIG. 2, the upper end portion 2e of the tubular body 2 has an opening portion 2b opened in a circular shape. It is formed.

Next, after filling a fluid substance (not shown) through the opening 2b of the cylindrical body 2, the opening 2b is closed and a well-known welding means, for example, welding including two heat-welding plates is performed. A sealing band 2a having a wide width is sandwiched in a desired width using a machine (not shown) and is welded leaving the outflow passage 4 formed of a non-welded portion.
And seal.

The outflow passage 4 is composed of a tightly adhered portion of the tubular body 2, the rear end 4a of which is communicated with the inside of the container, and the front end 4b is formed to extend to the upper corner 2c of the sealing band 2a. A notch 2d and a scissors mark (not shown) indicating a cutting position for opening the outflow passage 4 are provided near the upper corner 2c.

When the extrusion container of this embodiment having the above-mentioned structure is used, the upper end corner portion 2c of the sealing band 2a is cut with a blade to open the outflow passage 4, and the container body 1 is opened.
When the pressure is applied to the fluid substance filled by squeezing and squeezing, the outflow passage 4 in which the tubular bodies 2 are overlapped and in close contact with each other and is closed is expanded by the entry pressure of the fluid substance and automatically opened. The fluid substance is pushed out from the outlet of the outflow passage 4.

When the squeezing to the container body 1 is stopped and the pressure on the fluid disappears, the elastic restoring force of the tubular body 2 itself is added with the suction force accompanying the elastic restoring of the container body 1, and the outflow passage 4 is Self-close.

Therefore, even if the container is accidentally overturned, the fluid does not flow out, and since it can be placed upright, it is easy to handle and can be used repeatedly easily.

FIG. 3 shows a second embodiment of the extrusion container according to the present invention. In the drawing, the same parts as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

As shown in the figure, the extrusion container according to the second embodiment is basically the same as the first embodiment, and has a bottomed cylindrical container body 1 and an upper end portion welded and sealed. It is composed of a tubular body 2 made of a synthetic resin film formed on the band 2a, and the tubular body 2 is welded to the inner peripheral wall of the opening 1a of the container body 1.

The molding method of the container body 1 in the extrusion container of this embodiment and the welding method of the container body 1 and the tubular body 2 are the injection molding method or the insert molding method of the tubular body 2 by injection blow molding. To be done.

That is, the cylindrical body 2 is previously placed in the mold for molding the container.
After the mold is closed and the mold is closed, a molten resin is injected into the mold to mold the container body 1, and at the same time, the container body 1 and the tubular body 2 are welded and integrated with the molten resin to form a cylindrical upper end. The opened cylindrical body 2 is formed in a semi-finished product container fixed to the upper part of the container body 1.

The step of filling the container of the semi-finished product with a fluid and welding the upper end of the tubular body 2 to form the sealing band 2a, and the construction of the other parts in this embodiment are as described above. The description is omitted because it is almost the same as that of the first embodiment.

According to the extrusion container of the present embodiment constructed as described above, the welding process between the container main body 1 and the tubular body 2 can be omitted, and strong welding can be performed by the injection molten resin.
In addition, since the welded portion 3 does not appear outside the container, the appearance is improved and therefore the commercial value is enhanced.

The extruding container shown in the first and second embodiments is described as a container without a lid, but the mouth portion 1a of the container body 1 and the cylindrical body 2 are combined with each other. It goes without saying that the diameter may be smaller than the body diameter of the main body 1 so that the lid can be covered.

According to the extrusion container of the present invention, the following effects can be achieved.

According to the extrusion container of the first aspect,
Since it has a small number of parts and has a simple structure, it can be provided at a low cost.In addition, compared to the conventional container, the self-closing of the outflow passage adds the elastic restoring force of the tubular body to the suction force accompanying the elastic restoring of the container body. The container is surely handled and can be placed upright, so that it is easy to handle, and therefore, it is a convenient container suitable for easy repeated use.

According to the extrusion container of claim 2,
In addition to the above effects, the cylindrical body is welded to the inner peripheral wall of the mouth of the container body by the insert molding method, so that the welding step can be omitted and firm adhesion can be achieved. Since it does not appear in the product, it looks good and enhances the product value.

According to the extrusion container of the third aspect,
In addition to the effect of claim 1 or 2, since the tip of the outflow passage is located at the upper end corner portion formed of a narrow region of the sealing band, the upper end corner portion becomes a short cut portion which is easy to cut, and Accidental short cutting of the outflow passage can be avoided by cutting the upper end corner, and therefore the outflow passage having a predetermined length dimension is left open, so that the automatic closing function after opening is not impaired. .

[Brief description of drawings]

FIG. 1 is a front view showing a first embodiment of an extrusion container according to the present invention.

FIG. 2 is a cross-sectional view showing a state before sealing of the extrusion container according to the first embodiment.

FIG. 3 is a sectional view showing a second embodiment of the extrusion container according to the present invention.

[Explanation of symbols]

1 container body, 1a mouth part, 2 cylindrical body, 2a sealing band, 2e upper end part, 4 outflow passage, 4b tip,

Claims (3)

[Claims] 1. A tube made of a synthetic resin film member having elasticity and flexibility at the mouth of a container body having a bottom and having a squeezable flexibility and elasticity formed of a synthetic resin. A base portion of the tubular body is welded, and an upper end portion of the tubular body is communicated with the inside of the container body, and the film member is welded leaving a self-closed outflow passage formed of a non-welded portion having a closed tip. An extrusion container, which is sealed by a wide sealing band formed by. 2. The extrusion container according to claim 1, wherein the tubular body is welded to the inner peripheral wall of the mouth portion by an insert molding method. 3. The extrusion container according to claim 1, wherein a tip end portion of the outflow passage is located at an upper end corner portion of the sealing band.