JPH0542151U - Double container - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a user-friendly double container that can reliably squeeze out to the end all the highly viscous contents, such as toothpaste and cosmetics, that tend to stay near the discharge port. is there. [Structure] A flexible inner bag support having an outlet provided with a check valve mechanism in the upper part and an opening in the lower part, and a structure capable of being pushed into the inner bag support, A double container having a bag-shaped inner bag attached to the inner bag and a flexible outer body having the check valve mechanism attached to the inner bag support and sealed to the inner bag support. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a double container for storing highly viscous contents such as toothpaste powder, cosmetics and sanitary products.

[0002]

[Prior Art]

 Conventionally, as a container that is filled with high-viscosity contents such as toothpaste powder, cosmetics, hygiene products and used, the tube body is made of a flexible material, and the body is squeezed when used. A tubular container for discharging the contents is used. These containers are disclosed, for example, in Japanese Utility Model Laid-Open Nos. 55-129643, 55-129644, 55-129645, 55-129 646 and 57-57. No. 44063, No. 60-188149, No. 61-113241, No. 61-125946, No. 63-54647, No. 63-107966, No. 63-107966. As shown in Japanese Utility Model Laid-Open No. 63-1 54456 and Japanese Utility Model Laid-Open No. 63-169455, a dual structure having an outer body and an inner body is provided, and the inner body is discharged at the base of the outlet of the outer body. The base of the outlet is configured to be fixed, and the air pressure that is enclosed between the outer body and the inner body is used to attempt to efficiently discharge the content filled in the inner body. It is a thing.

Further, as disclosed in Japanese Patent Laid-Open No. 1-139375, the fixing position of the inner body to the outer body is fixed not only at the base of the discharge port but also at the center of the container main body, and the squeezing operation is performed. It has been proposed that the inner body is gradually narrowed down.

[0004]

[Problems to be solved by the device]

 However, even with the containers having the configurations described in the above publications, it is difficult to reliably discharge even the contents accumulated near the discharge port to the end, and squeeze the container by forcefully twisting it. Was there. Therefore, an object of the present invention is to provide a user-friendly double container which can surely squeeze out to the end all the highly viscous contents such as toothpaste and cosmetics that tend to stay near the discharge port. Is.

[0005]

[Means for Solving the Problems]

 The object of the present invention is to provide a flexible inner bag support having a discharge port with a check valve mechanism at the top and an opening at the bottom, and a structure capable of being pushed into the inner bag support. A bag-shaped inner bag attached to the opening, and a flexible outer body having a check valve mechanism attached to the inner bag support, which seals the inner bag internally. It is achieved by a double container characterized in that

It is desirable that the inner bag is configured such that the entire inner side surface of the inner bag can be brought into close contact with the entire inner wall surface of the inner bag support.

[0007]

[Action]

 As described above, since the bag-shaped inner bag is configured to be pushed into the inner bag support body, if the outer body is pressed during the squeezing operation, the space between the outer body and the inner bag becomes a pressurized state, and the pressure is applied. The contents are squeezed out from the inner bag. Then, when the pressing on the outer body is released, the inside of the inner bag is in a negative pressure state, and as a result, the inner bag is in a state of being pushed toward the inner bag support side. In this way, the squeezing operation is repeated, and the contents can be squeezed out without excess until finally the entire inner side surface of the inner bag comes into close contact with the entire inner wall surface of the inner bag support.

[0008] Therefore, when the content is running low, the content can be squeezed out to the end without any complicated operation such as squeezing out with force as in the case of the conventional container. .. Further, since it is performed at the same time as the normal use operation, the user does not need to intentionally perform another operation, and the usability does not deteriorate.

[0009]

Embodiments FIGS. 1 to 4 show an embodiment of a double container according to the present invention. FIG. 1 is an exploded perspective view of a double container, FIG. 2 is a vertical sectional view, and FIG. FIG. 4 is a vertical cross-sectional view showing the state during discharging of the liquid, and FIG. T is a double container filled with high-viscosity contents G such as toothpaste powder and cosmetics.

The reference numeral 1 denotes a discharge port 2 for the contents G formed on the upper portion, an opening 3 on the lower surface, and a material having appropriate flexibility (for example, low density polyethylene is used, and thin film aluminum is used on the inner surface). It is an inner bag support made of insert-molded material of Rondelle. Reference numeral 2a is a check valve provided in the discharge port 2, 2b is an inner plug fitted in the discharge port 2, and 2c is a cap.

Reference numeral 4 denotes a bag-shaped inner bag mounted so as to cover the opening 3, and is a flexible and airtight material (for example, low-density polyethylene is used so as to be pushed into the inner bag support 1 by air pressure, The inner surface is made of a material with a thin film of aluminum deposited on it. Further, the inner bag 4 is formed into a bag shape in which the lower end is bound and sealed so that the inner bag 4 is easily adhered to the inner wall of the inner bag support 1 when pushed. In addition, it is desirable that the inner bag 4 has a size such that the entire inner side surface of the inner bag 4 can be brought into close contact with the entire inner wall surface of the inner bag support 1.

Reference numeral 5 denotes a cylindrical outer body that encloses the inner bag support 1 and the inner bag 4, and is made of low density polyethylene or high density polyethylene. Then, in order to maintain a constant airtight state in the pressurizing chamber S formed between the outer body 5 and the inner bag 4 and the inner bag support 1, an O-ring, packing or the like is used and screwed. It is something. Reference numeral 5a is a vent hole provided in the lower bottom of the outer body 5, and reference numeral 5b is a check valve provided in the vent hole 5a.

In the operation of squeezing out the contents G filled in the double container T configured as described above, the cap 2c is removed and the outer body 5 is pressed as shown in FIG. The air A in the pressurizing chamber S existing between the leaned outer body 5 and the inner bag 4 is pressurized (compressed). As a result, the inner bag 4 is pressed, and the contents G inside are opened so as to push up the check valve 2a, and the contents G are squeezed out from the discharge port 2.

When the squeezing of the contents G is completed and the pressing of the outer body 5 is released, the inner bag support 1 and the inner bag 4 are in a negative pressure state, and the check valve 2a is closed. At the same time, the inside of the pressurizing chamber S existing between the outer body 5 and the inner bag 4 is also in a negative pressure state, the check valve 5b of the outer body 5 is in an open state, and air flows in from the outside. Is pushed toward the inner bag support 1 side by the amount of the squeezed contents G, and a part thereof is pushed into the inner bag support 1 through the opening 3. In this way, one squeezing operation is completed. This squeezing operation is repeated until the inner bag 4 comes into close contact with the inner wall surface of the inner bag support 1 as shown in FIG.

Therefore, as the outer body 5 is pressed, the inner bag 4 is pushed into the inner bag support 1 together with the contents G, so that the contents G can be squeezed out to the end. .. When pressing the outer body 5, in principle, the lower part of the outer body 5 in which the pressurizing chamber S is formed is pressed, but for example, the upper part in which the inner bag support 1 is formed is pressed. In this case, the inner bag support 1 has an appropriate restoring force, and since it is sufficient to press the lower part again, it does not hinder the squeezing operation.

Further, since the above-mentioned operation of the inner bag 4 is performed at the same time as the normal squeezing operation, the user does not need to intentionally perform another operation, and the usability does not deteriorate. Further, since the outer body 5 and the inner bag support 1 are configured to be detachable, there is an advantage that a refilling method of the inner bag support 1 can be adopted.

[0017]

【effect】

 The double container according to the present invention has a flexible inner bag support having a discharge port with a check valve mechanism at the top and an opening at the bottom, and can be pushed into the inner bag support. A flexible outer body configured to have a bag-like inner bag attached to the opening, and a check valve mechanism for sealing the inner bag and attached to the inner bag support. When the outer body is pressed during the squeezing operation, the space between the outer body and the inner bag is pressurized, and the contents are squeezed out from the inner bag that is pressed. When the pressure applied to the outer body is released, the inside of the inner bag is in a negative pressure state, and as a result, the inner bag is pushed toward the inner bag support. In this way, the squeezing operation is repeated, and the contents can be squeezed out without excess until finally the entire inner surface of the inner bag comes into close contact with the inner wall of the inner bag support.

Therefore, when the contents are running low, it is possible to squeeze out the contents to the end without complicated operations such as squeezing out forcibly like a conventional container. Have. Further, since it is performed at the same time as the normal use operation, the user does not need to intentionally perform another operation, and the usability does not deteriorate.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a double container of the present invention.

FIG. 2 is a vertical cross-sectional view of the double container of the present invention.

FIG. 3 is a vertical cross-sectional view showing a state in which the contents of the double container of the present invention are being discharged.

FIG. 4 is a vertical cross-sectional view showing a state in which all the contents are discharged in the double container of the present invention.

[Explanation of symbols]

 T Double container 1 Inner bag support 2 Discharge port 3 Opening part 4 Inner bag 5 Outer body 5a Vent hole 5b Check valve A Air G Contents

Claims (2)

[Scope of utility model registration request] 1. A flexible inner bag support having an outlet provided with a check valve mechanism on an upper portion and an opening provided on a lower portion,
A bag-shaped inner bag configured to be pushed into the inner bag support body and attached to the opening, and a check valve that seals the inner bag and is attached to the inner bag support body. A double container comprising a flexible outer body having a mechanism. 2. The double container according to claim 1, wherein the entire inner side surface of the inner bag is configured to be in close contact with the entire inner wall surface of the inner bag support.