JP2002326641A - Pouch - Google Patents

Abstract

(57) [Problem] To provide a pouch for a liquid or a viscous substance which has good pourability and can almost completely take out the contents. Alternatively, in a pouch in which a viscous material is hermetically sealed, the pouch is
A pouch having a structure in which a spout can be formed by opening the pouch, and an easy-opening means for cutting a body of the pouch is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pouch for sealing and packaging liquid or mucus, and more particularly, to a pouch from which contents can be almost completely removed without remaining.

[0002]

2. Description of the Related Art As a pouch used for retort foods, cosmetics, seasonings for refilling, detergents, etc., a pouch which can easily take out contents and can take out contents to the end is required. Conventionally, a plastic pouch made of a soft synthetic resin film and a hollow cylindrical nozzle made of plastic are attached to the top of the pouch, and as disclosed in Japanese Utility Model Application Laid-Open No. 53-68414. A particularly narrow seal portion is formed by leaving a non-seal portion at a part of an edge portion, and the non-seal portion is arranged so as to be located on an opening line by an opening notch. Some of them function as outlets. However, even with these types of pouches, it is not easy to take out the contents without leaving the contents,
There is a problem that a considerable amount of the content remains in the discarded pouch, and further improvement is required from the viewpoint of reducing the amount of waste and the economical viewpoint.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and it is an object of the present invention to provide a pouch having good pourability and capable of almost completely removing contents. I do.

[0004]

Means for Solving the Problems The present inventors have conducted intensive studies. As a result, in a pouch made of a synthetic resin film and in which a liquid or a viscous substance is hermetically sealed, the pouch has a structure in which a spout can be formed by opening the pouch. The present inventors have found that a pouch characterized by taking the above-mentioned easy-opening means solves the above-mentioned problem, and reached the present invention. That is, the present invention provides a pouch made of a synthetic resin film, in which a liquid or a viscous substance is hermetically sealed and packaged, wherein the pouch has a structure in which a spout can be formed by opening the pouch. The present invention provides a pouch characterized in that an easy-opening means is provided for the pouch.

[0005] More preferably, the pouch is opened,
A pouch according to any one of the preceding claims, wherein easy opening means for forming a spout is provided.

Further, the present invention provides a pouch, wherein the easy opening means is formed by a notch.

According to another aspect of the present invention, there is provided a pouch wherein the easy opening means is formed by a half cut line.

Further, the present invention provides the pouch as described in any one of the above items, wherein an air inflow hole can be formed in an upper portion of the pouch.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail.
A feature of the present invention is a structure in which a pouch made of a synthetic resin film, a peripheral portion of which is sealed by heat sealing, and a liquid or a viscous material is hermetically sealed and packaged can be formed by opening the pouch. It is,
Furthermore, easy opening means for cutting the body of the pouch is provided. By having such a structure, after roughly discharging the contents from the spout, if the body of the pouch is cut using the easy-opening means taken on the body of the pouch, it will be more in comparison with the spout. A large opening is formed, and the contents remaining in the pouch can be almost completely discharged from the opening by, for example, manually removing the contents. Further, the bulk can be reduced even when the pouch after the contents are taken out is discarded.

As easy opening means, not only a notch often used in ordinary pouches, but also a half-cut line by laser light irradiation, etc.
No. 1, JP-A-6-8966, etc. can be applied. The half-cut line is for partially cutting, for example, a substrate film layer on the surface in the layer structure of the laminated film, and is provided along the line to be cut. In addition, although the I-shaped or V-shaped notch is usually used for the notch, the shape is not particularly limited, and any shape having an acute angle portion in the cutting direction can be used.
The notch, the half-cut line, and the means based on the scar may be used alone or in combination.

[0011] The pouch of the present invention consists essentially of a plastic film. There is no particular limitation on the plastic film used for the pouch of the present invention, and any of those usually used for packaging bags can be used. Plastic materials suitable for forming the plastic film include, for example, polypropylene, propylene-ethylene copolymer, polybutene-1, poly4-methylpentene-1, low-, medium-, or high-density polyethylene, ethylene-acetic acid. Polyolefins such as vinyl copolymer (EVA), ethylene-ethyl acrylate copolymer (EEA), ion-crosslinked olefin copolymer (ionomer), and saponified ethylene-vinyl acetate copolymer; polystyrene, styrene-butadiene copolymer Aromatic vinyl copolymers such as polymers; halogenated vinyl polymers such as polyvinyl chloride and vinylidene chloride resin; nitrile polymers such as acrylonitrile-styrene copolymer and acrylonitrile-styrene-butadiene copolymer; nylon 6, Nylon 6
6. Polyamides such as para- or meta-xylylene adipamide; polyesters such as polyethylene terephthalate and polytetramethylene terephthalate; various polycarbonates; and thermoplastic resins such as polyacetals such as polyoxymethylene. Films made of these plastic materials are used as unstretched or uniaxially or biaxially stretched films.

The plastic film used in the pouch of the present invention can be constituted by a single layer of these plastic films or by laminating two or more of them. One or more of these plastic films can be used. And a metal foil such as aluminum, paper, cellophane, or the like. Preferred plastic films include, for example, a stretched nylon film as an outer layer, a low-density polyethylene, a two-layer structure having a polyolefin film such as polypropylene as an inner layer, a stretched polyester film as an outer layer, and a two-layer structure having a polyolefin film as an inner layer. And a three-layer structure in which a metal foil such as aluminum is laminated between outer films. When manufacturing these laminated films, an anchoring agent may be interposed between the layers as necessary.

Whether the plastic film is formed as a single layer or in what kind of layer structure may be selected according to the properties of the contents to be filled in the pouch, for example, as in a packing bag for detergent refill. For products that require low cost, use a two-layer laminated film, and for retort pouches that fill contents that require preservation such as seasonings and retort foods, three layers including aluminum foil The above laminated film may be used.

Next, a description will be given with reference to the drawings. FIG. 1 is a schematic view showing one embodiment of the pouch of the present invention. A particularly narrow seal portion is formed on a part of the upper edge of the self-supporting pouch 1 made of a synthetic resin, leaving a non-seal portion. The unsealed portion functions as the spout 2 after opening. When taking out the contents,
A V-shaped notch 31 is provided as an easy-opening means in order to easily open the pouch through the non-sealing portion. Further, a V-shaped notch 32 is provided below the notch 31 as an easy-opening means for cutting the body of the pouch. It is desirable that the location where the easy-opening means for cutting the pouch is taken is higher than the center of the body of the pouch (the spout side).

When the contents are taken out using the pouch of this embodiment, first, the upper part of the pouch 1 is cut off with the notch 31 as a starting point to obtain the state shown in FIG. Then, the contents are taken out from the outlet. Thereafter, the body of the pouch is cut starting from the notch 32 provided in the body of the pouch as an easy-opening means, and the contents remaining in the pouch are manually handled as illustrated in FIG. And squeeze out. By doing so, the contents inside the pouch can be almost completely taken out. This operation is the same for a pouch having the form described below.

FIG. 4 is a schematic view showing another embodiment of the pouch of the present invention. A spout 2 is provided at the upper left end of a self-supporting pouch 1 made of a synthetic resin.
An I-shaped notch 33 is provided as an easy opening means for opening the spout. A half-cut line 41 is provided on the body of the pouch as an easy-open means by irradiating a laser beam or the like. Further, a V-shaped notch 34 is provided at a position where the side edge of the pouch intersects the half-cut line.

FIG. 5 is a schematic view showing another embodiment of the pouch of the present invention. Although most of the structure of the pouch is the same as that described with reference to FIG. 4, the greatest feature of this embodiment is that an air inlet hole can be formed at the top of the pouch. In the example shown in this figure, an I-shaped notch 35 is provided at the upper right corner of the pouch. When taking out the contents,
The air inflow hole 5 is formed by tearing the corner of the pouch starting from the notch 35 (see FIG. 6). With such a structure, when taking out the contents from the pouch, it is preferable to prevent a phenomenon in which the contents are discharged with pulsation as a result of the inside of the pouch becoming negative pressure in the process of discharging the contents.

It should be noted that, in addition to the spout of the form exemplified in the above description, a spout made of a separate member as shown in Japanese Utility Model Publication No. 2-213399 and Japanese Utility Model Publication No. 5-1183 is provided on the pouch body. It is also possible to attach it.

As described above, the preferred embodiments of the present invention have been described with reference to preferred examples, but these are illustrative and not restrictive. Accordingly, it should be understood that these modifications by those skilled in the art are included in the present invention as long as they fall within the scope described in the claims of the present invention.

[0020]

As described above, according to the present invention, there is provided a pouch having good pourability and capable of almost completely removing contents. It can be said that the pouch of the present invention is economical because almost no content remains therein after use, and is also useful from the viewpoint of reducing the amount of dust.

[Brief description of the drawings]

FIG. 1 is a schematic view showing one embodiment of a pouch of the present invention.

FIG. 2 is a schematic view showing a state where the pouch shown in FIG. 1 is opened.

FIG. 3 is a schematic view showing a state in which the body of the pouch shown in FIG. 1 is cut and contents are taken out.

FIG. 4 is a schematic view showing another embodiment of the pouch of the present invention.

FIG. 5 is a schematic view showing another embodiment of the pouch of the present invention.

FIG. 6 is a schematic view showing a state where the pouch shown in FIG. 5 is opened and an air inflow hole is formed.

[Explanation of symbols]

 1 Pouch 2 Spout 31, 32, 33, 34, 35 Notch 41, 42 Half cut line 5 Air inlet

Continued on front page F-term (reference) 3E064 AB25 AB26 BA01 BA16 BA27 BA28 BA29 BA30 BA35 BA36 BA37 BA38 BA46 BA55 BB03 BC18 EA12 FA04 FA05 HD02 HE03 HN06 HP01 HP02

Claims (5)

[Claims] 1. A pouch made of a synthetic resin film, in which a liquid or a viscous material is hermetically sealed and packaged, wherein the pouch has a structure in which a spout can be formed by opening the pouch. A pouch characterized in that an easy-opening means is provided for the pouch. 2. The pouch according to claim 1, wherein an easy-opening means for opening the pouch and forming a spout is provided. 3. The pouch according to claim 1, wherein the easy opening means is formed by a notch. 4. The pouch according to claim 1, wherein the easy-opening means is a half-cut line. 5. The pouch according to claim 1, wherein an air inflow hole can be formed in an upper portion of the pouch.