JPH0625168U - Stackable container - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a laminated container having a structure that does not require processing for the outer container. [Structure] An outer container 1 having a mouth tube portion 3, and the outer container 1
And a shrinkable inner container 2 for storing the contents. The tubular body 5 in which the inner container 2 is airtightly connected is fitted into the mouth tubular portion 3, and a space portion 6 having the intake port portion 21 is formed between the tubular body 5 and the tubular body 5 so as to form a space portion 6. Insert the spout 4 into the inside. A ventilation hole 7 communicating with the space 6 is formed on the outer peripheral surface of the cylindrical body 5, an intake passage 9 is provided so that the outer side 8 of the inner container 2 communicates with the outside air, and a film 10 covering the ventilation hole 7 is surrounded by the outer periphery. Wrap around surface 16 to form intake check valve 17. In the pouring path 11, a mountain portion 1 in which a flexible thin plate is radial
2 is formed, and a check valve for pouring 15 having a slit 14 on the top 13 is attached.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a laminated container, and more particularly to a laminated container having a structure in which air flows between an outer container and an inner container when the contents are poured out.

[0002]

[Prior art]

 Conventionally, as a laminated container, an outer container formed of a flexible synthetic resin and provided with a mouth tube portion, and an inner container that is internally contained in the outer container and that stores the contents are provided. There is one in which a hole is bored in the bottom part of which and an intake check valve is attached to this hole.

This is because when the outer container is squeezed, the contents are poured out from the pouring outlet, and the inner container and the outer container contract. When the squeeze operation is stopped, air is drawn in between the inner container and the outer container, and only the outer container returns to its original shape.

Further, this container has a hole for attaching a check valve at the bottom of the outer container, and a check valve formed separately is inserted into this hole so that a slit is formed in a rubber body. It was a structure.

[0005]

[Problems to be solved by the device]

 However, in the conventional structure as described above, there is a problem in that the outer container is subjected to processing such as punching, which impairs its appearance. In addition, it was necessary to secure a space for installing a check valve in the container.

Further, since it is necessary to provide a dedicated outer container having a check valve hole and a check valve, there is a problem that the cost increases. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a laminated container having a structure that does not require any processing for the outer container and is easily manufactured.

[0007]

[Means for Solving the Problems]

 The present invention has the following configuration to achieve the above object. That is, an inner container 1 formed of a flexible synthetic resin and provided with a mouth tube portion 3 and an inner container 2 that is internally contained in the outer container 1 and that stores contents therein are provided. The tubular body 5 in which the two are airtightly connected is fitted into the mouth tubular portion 3, and a space portion 6 having the intake port portion 21 is formed between the tubular body 5 and the tubular body 5 so that the tubular body 5 is provided inside the tubular body 5. The pouring cylinder 4 is inserted, a ventilation hole 7 communicating with the space 6 is bored in the outer peripheral surface 16 of the cylinder body 5, and an intake passage 9 for communicating the outside 8 of the inner container 2 with the outside air is provided. Further, an intake check valve 17 for opening and closing the vent hole 7 is installed, while a flexible thin plate is radially formed to form a mountain portion 12, and a slit 14 is provided at a top portion 13 which intersects with each other. The check valve 15 for pouring is arranged in the pouring path 11 in the pouring cylinder 5.

The intake check valve 17 can be formed by winding a flexible film 10 that covers the vent holes 7 around the outer peripheral surface 16 of the cylindrical body.

[0009]

[Action]

 In this container, the tubular body 5 and the spouting cylinder 4 are attached to the mouth cylinder part, the spouting check valve 15 is provided in the spouting path 11, and the suction check valve 17 is provided in the intake path 9. By attaching the pouring tube 4 to the mouth tube portion, the inner volume is reduced when the outer container 1 is squeezed, and pressure is applied to the inner container 2. By compressing the inner container 2, the contents of the inner container 2 are poured out from the pouring outlet 24 of the pouring tube 4, and the volume of the inner container 2 is reduced by the pouring amount.

When the squeeze operation of the outer container 1 is stopped, the restoring force of the outer container 1 restores the original shape and the original volume. When the outer container 1 returns to its original shape, air is sucked between the inner container 2 and the outer container 1 through the intake check valve 17.

Further, the check valve 15 for pouring has a configuration in which a thin plate having flexibility and flexibility is radially formed to form a mountain portion 12, and a slit 14 is provided at a top portion 13 which intersects with each other. This is because the center of the intersecting top 13 is retracted around and the valve is opened and the contents are dispensed. Therefore, at any angle, the contents can be poured from the center of the spout without being offset.

[0012]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of a laminated container of the present invention, FIG. 2 is an enlarged sectional view of a mouth cylinder, FIG. 3 is a perspective view of a cylinder, and FIG. 4 is a perspective view of a check valve for pouring.

The outer container 1 having a shoulder portion and a bottom portion is a container made of elastic and flexible synthetic resin such as polyethylene or polypropylene formed by a general method such as blow molding or injection molding. The outer container 1 has flexibility so that it can be easily squeezed by hand, and when the squeeze operation is stopped, the shape and the volume of the outer container 1 quickly return to the original shape.

Further, the outer container 1 has a mouth tube portion 3 on an upper portion thereof, and a screw 18 for screwing a cap (not shown) is formed on the mouth tube portion 3, and usually has a height of 5 to 20 cm and a bore diameter of 5 to 20 cm. It can be about 1 cm to 3 cm.

A tubular body 5 fixed by a flange at the upper end is airtightly fitted to the mouth tubular portion 3. The tubular body 5 can be manufactured by a method such as injection molding using a material such as polyethylene or polypropylene that is easy to manufacture. An inner cylinder 20 made of polyethylene, polypropylene or the like and having an open upper surface is fitted in the inner periphery of the inner cylinder 20. The spout cylinder 4 is inserted in contact with the inner side surface of the inner cylinder 20 so as to form a space portion 6 having an intake port portion 21 in the upper portion.

The inner container 2 has, for example, a thickness of about 0.05 to 0.2 mm, and is in the form of a bag made of a flexible and hard-to-tear plastic film such as polyethylene which is shrinkable. To be decorated. The inner container 2 is adhered to the lower end of the tubular body 5 in advance by a method such as heat welding, and the opening 19 of the inner container 2 is airtightly joined to the lower end of the tubular body 5. Then, the outer container 1 is loaded by being folded or rolled so that almost no air enters the inside. Next, before mounting the check valve 15 and the straw 22 for pouring in the pouring path 11, after filling the contents from the mouth cylinder part 3 into the inner container 2 by a general filling method, the inner cylinder 20. Completely mount the extraction cylinder 4 in the cylinder 5. In this case, when the tubular body 5 is fitted in the mouth tubular portion 3 with a small gap and the inner container 2 is expanded by filling the contents, the air between the outer container 1 and the inner container 2 is the gap. Is discharged from the outside.

The space 6 between the tubular body 5 and the pouring barrel 4 communicates with a ventilation hole 7 provided on the outer peripheral surface of the tubular body 5 via a small hole 21 provided in the inner barrel 20. ing. At least one small hole 21 is provided. Therefore, an intake passage 9 is formed through which the outside 8 of the inner container 2 communicates with the outside air via the intake port 21 penetrating the space 6.

Further, as shown in FIG. 3, the vent hole 7 is covered with a thin plastic film 10 wound around the outer peripheral surface 16 of the tubular body 5. These are located on the intake passage 9 and form a check valve 17 for intake.

On the other hand, as shown in FIG. 4, in the pouring path 11 in the pouring tube 4, a thin plate-shaped silicon rubber or the like is molded to form four ridges 12 in a radial shape, and the ridges 12 are formed in a cross shape. A pouring check valve 15 having a slit 14 is arranged at the intersecting top portion 13.

Further, in the inner container 2, a straw 22 having a head fixed inside the spout 4 is inserted. The straw 22 is provided with one or more suction holes 23, through which the contents in the inner container 2 are sucked and sent to the pouring cylinder 4 through the slot 22. The straw 22 provided with such a suction hole 23 can prevent the inner container 2 from contracting at the top while leaving the contents at the bottom.

The container of this embodiment has the above-mentioned structure, and in order to pour out the contents filled in the inner container 2, the side surface portion of the outer container 1 is squeezed. Then, the air in the outer container 1 is compressed, and the inner container 2 is also compressed accordingly. During this pressurization, the content in the inner container 2 is discharged from the spout 24 through the straw 22.

In this case, the pressure inside the outer container 1 becomes high, and the film-like intake check valve 17 wound around the outer peripheral surface 16 of the tubular body 5 is pressed against the outer periphery of the tubular body 5 to open the vent hole 7. Since it is closed, air does not flow out of the outer container 1.

When the outer container 1 is released, this shape returns to its original shape, so that the pressure inside the outer container 1 is reduced. Then, the silicone rubbers forming the slits 14 adhere to each other and close the slits 14, so that the check valve 15 for pouring is closed, and the check valve 17 for intake is, on the contrary, the pressure of the air flowing in from the vent hole 7. Is opened away from the cylinder 15. Therefore, the air flows in between the outer container 1 and the inner container 2 and becomes ready to be poured out again.

The inner container 2 remains in a contracted state, and further contracts as the amount of the content decreases, so that even a highly viscous emulsion or the like can be easily poured out. Further, since air does not enter the inner container 2 and the contact with the outside air is extremely small, it is suitable for storing the contents deteriorated by oxidation.

[0025]

[Effect of device]

 As described above, according to the present invention, since the intake check valve 17 is formed on the intake path and the pouring check valve 15 is provided on the pouring path of the contents, the container main body side has no problem. No need to process. Therefore, the appearance of the container is not impaired.

Further, the structure of the outer container is simplified, and the check valve for pouring 15 has a mountain portion 12 formed by bending a thin flexible plate, and a slit 14 is provided at a top portion 13 which intersects with each other. Because of this, the contents can be poured from the center of the pouring outlet at any position without deviation.

[Brief description of drawings]

FIG. 1 is a sectional view of the laminated container of the present invention.

FIG. 2 is an enlarged cross-sectional view of a mouth cylinder part.

FIG. 3 is a perspective view of a cylindrical body

FIG. 4 is a perspective view of a check valve for dispensing.

[Explanation of symbols]

 1 Outer Container 2 Inner Container 3 Mouth Cylinder 4 Spout Cylinder 5 Cylinder 6 Space Part 7 Vent 8 Outer Side of Inner Container 9 Intake Path 10 Film 11 Spout Path 12 Mountain 13 Top 14 Slit 15 Check Valve

Claims (2)

[Scope of utility model registration request] 1. An outer container (1) formed of a flexible synthetic resin having elasticity and provided with a mouth tube portion (3), and a contraction for accommodating the contents inside the outer container (1). A cylindrical body (5), which is equipped with a possible inner container (2) and is airtightly connected to the inner container (2), is fitted into the mouth cylinder part (3). The spout cylinder (4) is inserted inside the cylinder (5) so that the space (6) having the mouth (21) is formed, and the space is formed on the outer peripheral surface (16) of the cylinder. A ventilation hole (7) communicating with the part (6) is bored, and the outside (8) of the inner container (2) is formed.
Is provided with an intake passage (9) communicating with the outside air, and an intake check valve (17) for opening and closing the vent hole (7) is provided, while a flexible thin plate is radially formed to form a mountain. Division (12)
Forming slits and slits (1
A checkout valve (15) for pouring provided with 4) is arranged in the pouring path (11) in the pouring cylinder (5), the laminated container. 2. The intake check valve (17) is formed by winding a flexible (non-tearable) film (10) covering the vent hole (7) around the outer peripheral surface (16) of the cylindrical body. The laminated container according to claim 1.