JP3258822B2 - Independent packaging - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-standing package in which a liquid is contained in a self-standing bag (standing pouch).

[0002]

2. Description of the Related Art A self-supporting bag is preferable in terms of display of merchandise and ease of use because it can be erected while being filled with contents such as liquid and solid. In addition, the self-supporting bag has the advantage that it does not become bulky while it is not filled, so that it occupies a small space during transportation and storage, and that it does not become bulky even after using the contents, so that it is easy to dispose.

[0003] An application for a self-supporting bag is disclosed in
JP-A-7-46750, JP-A-56-123255, JP-A-54-8072, JP-A-60-172
Many applications have been filed, including Japanese Patent Application Laid-Open No. 656 and Japanese Patent Application Laid-Open No. Hei 5-116237.

[0004]

A package in which a self-supporting bag is filled with a liquid may fall down when the self-supporting bag is left standing unless the thickness of the packaging material constituting the bag is greater than a certain value.
If you fall at the store, you will lose your willingness to buy.

[0005] Self-supporting bags are also used, for example, for the purpose of refilling liquid detergent bottles for home use. However, if the contents are low in viscosity, such as liquid detergent, if the contents are partially transferred to a bottle and the rest are left standing, the bag will bend or fall, causing the contents to spill. Sometimes.

In order to avoid the above troubles,
It is only necessary to use a material as thick as possible as a packaging material constituting the self-supporting bag so as to make it difficult to bend. Thickening is also disadvantageous in terms of resin cost.

[0007] The self-supporting bag is opened by using scissors or a cutter, or by tearing from a cut provided in the upper part of the bag. At this time, the opening of the opening (discharge opening) becomes large. Is performed, a large amount of the content is discharged at a time, so that the content may be spilled at the time of transfer to a bottle or the like.

[0008] Under such a background, the present invention makes it difficult for a thin bag to bend or fall even if it is a thin bag, it is difficult for the contents to flow out even if the bag falls, and the transfer operation to another container can be performed. It is an object of the present invention to provide an easily self-supporting package.

[0009]

According to the present invention, there is provided a self-supporting package, in which a sponge body (2) having a restoring property and a liquid absorbing property is accommodated inside a flexible bag (1) having a self-supporting property, and It has a structure in which the sponge body (2) is packaged with the liquid absorbed.

Hereinafter, the present invention will be described in detail.

As the bag (1), a self-supporting flexible bag is used. There is no particular limitation on the packaging material constituting the bag,
Usually, a single-layer or multilayer film in which at least the innermost layer is made of a heat-sealing resin layer is used. A typical layer configuration in the case of multiple layers, the innermost layer is a heat sealable resin layer,
The outermost layer is a biaxially stretched or unstretched base film of polyester, polypropylene, polyamide or the like, and may include a gas barrier layer or the like as an intermediate layer. Bag (1)
In order to impart independence, various bag-making methods conventionally used are adopted.

Although the thickness of the packaging material constituting the bag (1) is not particularly limited, the thickness of the packaging material before bag making is about 20 to 120 μm.
In particular, one of the features of the present invention is that a relatively thin one of about 40 to 100 μm may be used.

A sponge body having a restoring property and a liquid absorbing property is provided inside the above-mentioned self-supporting flexible bag (1).
(2) is contained. The restoring property is a property of returning to the original shape when decompressed after applying a compressive force. Liquid absorbency is a property of retaining a large amount of liquid in open cells. Sponge body
The material of (2) is arbitrary, including polyurethane, polyolefin, polyvinyl formal, polyvinylidene chloride, and synthetic rubber, and polyurethane is particularly important.

As the liquid to be absorbed by the sponge body (2), cleaning liquid (for home use, car use, business use, etc.), disinfectant, liquid food, beverage, seasoning, cosmetics, fragrance, oils, building materials There are various types of adhesives, including adhesives, stationery adhesives, dusting agents, various chemical agents, plant growth agents, liquid fertilizers, liquid pesticides.

The filling of the bag (1) with the sponge body (2) and the liquid may be carried out simultaneously with the bag making or after the bag making. At the time of heat sealing, various deformation seals such as forming a spout at the time of opening are possible.

The opening can be carried out using scissors or a cutter, but it is preferable to provide a notch or an easily tearable portion in the upper part of the bag (1) in advance.

[0017]

In order to use the self-supporting package of the present invention having the above structure, it is only necessary to open the upper portion of the bag (1) and press the body of the bag (1). The liquid absorbed by the sponge body (2) leaches out of the sponge body (2) and is discharged through the opening. In this case, even if the opening is large,
(1) Smooth discharge is possible only by controlling the pressing force on the body, so that transfer to another container is easy.

Even if the liquid in the bag (1) remains,
Due to the presence of the sponge body (2) inside (1), even if the bag
Even if (1) is made of thin packaging material, the bag (1) will remain independent. Also, even if it falls down in this state, the liquid is absorbed in the sponge body (2), so it is prevented from flowing out of the opening part, or even if it flows out, the amount of outflow is minimized .

[0019]

The present invention will be further described with reference to the following examples.

Embodiment 1 FIG. 1 is a front view showing an example of a self-supporting package of the present invention, and FIG. 2 is a side view thereof, all of which are shown in a transparent state.

A polyamide film having a thickness of 15 μm was coated on one side with an extrusion coating method to a thickness of 70 μm.
m Prepare a packaging material provided with a low-density polyethylene layer, heat seal it so that the low-density polyethylene layer is on the inside, and cut it to make it a self-supporting bag.
(1) was made into a bag.

The sponge body (2) made of polyurethane was filled from the opening of the bag (1), a neutral liquid detergent for dishwashing as an example of the liquid (L) was filled, and the opening was heat-sealed. . At this time, heat sealing was performed so that the spout (3) was formed as shown in FIG. Spout
(3) A cut (4) was made in the nearby heat seal area.

The notch (4) of the self-supporting package thus obtained is opened by tearing with a finger, and the body is pressed by a spout.
The liquid detergent was discharged from (3) and transferred to the bottle, but the transfer operation was smooth. This self-supporting package is
Even when half of the liquid detergent was left inside, the liquid detergent maintained its independence, and even when it was turned over, almost no outflow of the liquid detergent occurred.

Example 2 A biaxially oriented polypropylene film having a thickness of 15 μm was coated on one side with an extrusion coating method to a thickness of 50 μm.
m A packaging material provided with an ethylene-vinyl acetate copolymer layer is prepared, and the ethylene-vinyl acetate copolymer layer is heat-sealed and blown so that the ethylene-vinyl acetate copolymer layer is on the inside, so that a self-supporting bag (1 ) Was made into a bag.

The opening of the bag (1) was filled with a coarse sponge body (2) made of polyurethane and an adhesive for building material as an example of the liquid (L), and the opening was heat-sealed.

The self-supporting package thus obtained was opened and refilled into a bottle. The refilling operation was smooth despite the high viscosity.

Further, the self-supporting package was opened, and the discharge was performed directly from the opening to the object, but a proper amount of discharge was possible, and the usability was good. No content spillage occurred when falling over at the half-consumed stage.

[0028]

According to the self-standing package of the present invention, even if the bag (1) is made of thin packaging material, the self-standing package of the present invention may bend or fall due to the presence of the sponge body (2) in the bag (1). Difficult, bag (1) remains self-supporting. Independence is maintained even after partially consuming the liquid content, and even if it falls down in this state, the liquid is still absorbed by the sponge body (2), so open it. Outflow from the part is prevented or suppressed.

Even if the opening portion of the bag (1) is opened, even if the opening portion becomes large, smooth discharge can be achieved only by controlling the pressing force against the body portion of the bag (1), so that transfer to another container is possible. Easy.

After use, the sponge body (2) can be taken out and the sponge body (2) can be reused for another purpose.

The fact that the bag (1) may be thin means that the bag can be made smoothly, and is advantageous in terms of the cost of the bag material.

[Brief description of the drawings]

FIG. 1 is a front view showing an example of a self-supporting package of the present invention.

FIG. 2 is a side view of FIG.

[Explanation of symbols]

 (1)… bag, (2)… sponge, (3)… spout, (4)… cut, (L)… liquid

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B65D 77/24 B65D 33/00 B65D 30/16

Claims (1)

(57) [Claims] A sponge body (2) having a resilience and a liquid absorbing property is accommodated in a self-supporting flexible bag (1) and a liquid is absorbed in the sponge body (2). A self-supporting package having a packaged structure. Free-standing packaging.