JPH066026Y2 - Liquid storage container - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a liquid storage container in which a pouring port for easily pouring a content liquid is formed only by peeling a release sheet.

[Prior art]

2. Description of the Related Art A spout plug that is attached to a spout portion of a paper container or the like that stores a liquid such as liquor or juice has been conventionally known. For example, the first
As shown in FIG. 0, a spout B having a sealing flange D is attached to the shoulder of the container A, and an inner spout C for opening is fitted inside the spout. When you press
A film (not shown) attached to the spout of the container A is torn and opened so that the liquid can be spouted.
No. 8-37828. In the container,
The cap E is fitted into the spout of the spout body B during storage.

However, such a spout plug is composed of a spout body B and three members, an inner plug C for opening and a cap E, which are slidably provided inside the spout of the spout body. Therefore, there is a drawback that the structure is complicated and the manufacturing cost is high.

On the other hand, there is also known a liquid storage container in which a film is provided on each of the inside and outside of the spout of the container, and which is integrally bonded at the spout. This container has a structure that can easily seal the spout, but if the film provided on the outer surface is peeled off, the release sheet will peel off without remaining in the container, making it impossible to reseal the spout. Often.

Further, the structure in which the spout is sealed with two films is easy to manufacture, but since the spout only opens in the container body when opened, it is difficult to pour out the content liquid, and It has the drawback that it easily spills on the wall of the container.

[Problems to be solved]

An object of the present invention is to provide a liquid storage container having a simple structure and provided with a pouring means in which a pouring port that can be poured out easily is formed only by peeling a release sheet.

[Means for solving problems]

The above-mentioned problems include a pouring opening formed on the wall surface of a container, a cut for forming a pouring opening, a pouring opening forming film which is attached to the inner surface of the container to cover the opening, and the opening. Is a container for liquid storage, which is provided with a release sheet that is covered from the outside of the container and is attached to the film for forming a spout, wherein the film for forming a spout comprises a laminate film in which aluminum foil having a thickness of 30 to 70 μm is laminated. The elongation at peeling is 5% or more, the width from the notch for forming the spout to the outer peripheral portion of the opening is 3 to 15 mm, and the peel strength of the release sheet is 0.7 to 4 kg / It was solved by using a liquid storage container characterized by being in the range of 15 mm.

The pouring opening of the present invention is provided on the wall surface of the container, but it is preferable to provide it on the sloped roof portion.

In the present invention, the spout forming film is attached to the inner surface of the container to cover the opening. At this time, the film for forming a spout should be provided with a cut or a similar small hole for cutting in an area smaller than the opening, and the cut or the hole should be located inside the opening. It is necessary to attach the spout forming film to the inner wall of the container. The cuts and holes are preferably formed in a U-shape or a V-shape, and when peeled together with the release sheet, the cuts and holes are formed so that the upper portion of the release sheet and the spout forming film remain adhered. Is preferably provided. This is because it is suitable to cover the spout again with the release sheet after forming the spout by peeling. further,
In the present invention, it is preferable that a space between the lower end of the opening provided in the container (the end close to the peeling direction) and the cut or hole is 3 mm or more, preferably about 3 to 15 mm, and a spout is formed. The width from the notch to the outer peripheral portion of the container opening is set to 3 to 15 mm, preferably 3 to 10 mm, and a pouring outlet capable of appropriate pouring can be formed in the center.

In the present invention, the opening is covered with a release sheet from the outer surface of the container and is attached to the outer surface of the container and the spout forming film.
At this time, the peel strength between the release sheet and the spout forming film is in the range of 0.7 to 4 kg / 15 mm, and the elongation of the spout forming film at the time of peeling is 5% or more, preferably 5 to 40. It is necessary to be in the range of%.
That is, by doing so, the film for forming a spout that remains in the opening of the container due to peeling is deformed by being pulled to the outside and somewhat protruding to the outside. This is because dripping can be prevented and the purpose of the present invention can be achieved.

In the present invention, the peel strength can be obtained by appropriately selecting the materials of the spout forming film and the release sheet to be used. Further, the above elongation can be achieved by adjusting the material and the thickness. Specifically, as a film for forming a spout,
It is preferable to use a laminated film composed of polyethylene (PE) / aluminum foil / epoxy resin so that the polyethylene is attached to the inner surface of the container. On this occasion,
The thickness of PE is 30 to 80μ, and the thickness of aluminum foil is 30 to 7
It is preferably 0 μ, more preferably 40 to 60 μ.

Further, as the release sheet, it is preferable to use a laminated film composed of polyethylene terephthalate (PET) / aluminum foil / polyethylene (PE) so that the PE adheres to the spout forming film. At this time, PET
10-20μ, aluminum foil 20-40μ, PE 40-80
It is preferable to use it with a thickness of μ. Further, in the above laminated film, the PE layer can be replaced with a PE (20μ) / (PE / polyvinylidene chloride / PE: 45μ) layer.

Furthermore, in order to more easily project the spout forming film remaining in the opening of the container to the outside in the present invention, it is preferable to provide a recess of various shapes between the lower end of the opening and the cut or hole, For example, it is provided along the shape of a cut or a hole.

The spout of the present invention can be provided in various containers such as a quadrangular prism, and as the material of the container, various materials such as paper, paper laminated with plastic such as polyethylene, polypropylene and the like can be used. The above-mentioned spout-forming film and the container may be adhered to each other, and the release sheet may be adhered to the outer surface of the container and the spout-forming film, but heat sealing is preferable. In the present invention, the shape of the release sheet is arbitrary, but the release sheet is a film having a size such that the lower end projects from the roof of the container, and the lower end of the release sheet is heat-sealed at one point or several points and attached to the container. It is preferable that the release sheet is easily peeled off and that the release sheet is fixed to the container so that the release sheet does not bend when the container is manufactured.

[Embodiment] An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows a perspective view in which a part of the release sheet is cut off, and FIG. 2 shows a sectional view taken along the line AA of FIG. The container shown in this figure is a Gobel-top type container that is formed mainly of paper having thermoplastic resin films on both sides, and has a pouring opening 3 on the container wall surface 2 of the roof part 1. A spout-forming film 4 (thickness 102 μm) made of epoxy / aluminum foil / polyethylene is formed on the inner surface, and the opening 3 is formed in the center.
A film 4 for forming a spout having a smaller U-shaped cut 5 is attached so that the cut 5 is inside the opening 3, and an aluminum foil and a synthetic resin film are laminated on the outer surface of the opening 3. It has a spout formed by sticking a release sheet 6 consisting of.

A U-shaped cut 5 is formed in the spout forming film 4, but as shown in FIG. 3, a crescent-shaped hole 7 having a wider width is provided below the spout forming film. After the tongue piece 8 on the top of the sheet peels off the release sheet, it may be attached to the release sheet and left. Further, as shown in FIG. 4, a hole 9 similar to the opening 3 is formed, and short cuts 10 and 10 'are provided on both sides of the upper end of the hole 9 so that the tongue piece 11 can be attached to the release sheet at the time of peeling. You may

As described above, when the tongue pieces 8 and 11 are formed on at least the upper edge of the cut line, the hole or the combination thereof and the release sheet is left on the release sheet after the release sheet is peeled off, the spout can be resealed after the peeling off. preferable.

Another container of the present invention made of the same material as that shown in FIG. 1 is shown in FIG. 5. When the release sheet is peeled off, the release sheet 7 and the spout forming film are peeled off as shown in FIG. The tongue piece 12 formed in 4 is pulled up, and the spout 13 is formed. Then, the peeling of the release sheet 7 is surely stopped at the end of the tongue piece 12.

At this time, the peeling strength at the time of peeling was 1.0 kg / 15 mm (tensilen type tensile tester, tensile speed 200 mm / min, 180 ° peeling), and the elongation of the spout forming film at this time was 8% (JIS1707). It was measured according to the tensile test method of 1. The tensile speed was 100 mm / min. Because of having such strength and elongation, the spout formation film 4 is stretched and deformed by peeling due to peeling, and the BB sectional view of FIG.
As shown in the figure, the spout 13 is formed such that the outer edge of the cut provided in the spout forming film projects outward. still,
As shown in FIG. 5, the distance between the lower end 14 of the container pouring opening and the lower end 15 of the cut is 4 mm.

When resealing, return the release sheet 7 to the pouring outlet 1
3 can be covered.

Further, as shown in FIGS. 7 and 8, when a deformed portion 16 composed of one to a plurality of cuts or recesses is provided at the lower edge of the cut 5 of the spout formation film 4, with the peeling of the release sheet, The deformed portion 16 is pulled out, and the lower portion is projected, so that the liquid can be poured more easily.

Further, as shown in FIG. 9, the spout forming film 4 is formed.
If a recessed portion 17 having an inner edge similar to the shape of the cut 5 is provided on the lower side of the cut 5, the lower edge of the spout 13 is likely to project at the time of peeling the release sheet, so that the structure can be more easily poured. . Further, it is preferable that the lower end of the release sheet 6 has a size projecting from the roof portion 1 and one position 19 of the lower end 18 of the release sheet is easily attached.

〔effect〕

Since the present invention has the above structure, when the release sheet is peeled off, the outer edge portion of the cut or small hole of the film for forming the spout forms the spout that protrudes outward along with the peeling. No sagging. On the other hand, when the tongue piece is formed in the spout-forming film by a cut or a small hole, the tongue provided on the film adheres to the release sheet and separates from the other part of the spout-forming film. A protrusion is formed. Therefore, after the spout is formed, the release sheet is prevented from peeling off by the tongue piece, and there is no risk of peeling from the container. If the release sheet is returned, it can be resealed.

Further, if a deformed portion composed of a cut or a molded portion is provided at the lower edge of the pouring portion, the deformed portion is pulled out along with the peeling of the release sheet, and the liquid can be surely poured without dripping.

Furthermore, since a resealable spout can be formed without using a specially shaped spout plug, it can be manufactured at low cost, and since the spout is flat, stacking of container materials before liquid filling is possible. It is easy to store with the members attached.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention showing a release sheet partially cut away, FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG.
FIG. 4 is a plan view showing another form of the spout forming film, FIG. 5 is an explanatory view showing an opened state of a liquid storage container which is another embodiment of the present invention, and FIG. BB of FIG.
FIG. 7 is an enlarged sectional view, FIG. 7 and FIG. 8 are views showing another form of the spout formation film, FIG. 9 is a perspective view showing another embodiment, and FIG. 10 is a conventional liquid storage container. FIG. In the figure: 1 ... Roof part, 3 ... Pouring opening, 4 ... Film for forming spout, 5 ... Cut, 6 ... Release sheet, 8, 10, 12 ... Tongue piece, 13 ... Outlet.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kazuya Sekiguchi, 1-5-7 Mikitei-cho, Higashi-Osaka City, Osaka Prefecture House Food Industry Co., Ltd. (56) References Sho 60-115823 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A pouring opening forming film having a pouring opening formed on a wall surface of a container and a notch for forming a pouring opening, the film being stuck on the inner surface of the container to cover the opening, and the opening. Is a container for liquid storage, which is provided with a release sheet that is covered from the outside of the container and is attached to the film for forming a spout, wherein the film for forming a spout comprises a laminate film in which aluminum foil having a thickness of 30 to 70 μm is laminated. The elongation at peeling is 5% or more, the width from the notch for forming the spout to the outer peripheral portion of the opening is 3 to 15 mm, and the peel strength of the release sheet is 0.7 to 4 kg / A container for storing liquid, which is in the range of 15 mm.