JPH1191799A - Folding flexible container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a means for surely reducing volume as small as possible after full use and to be deposited in a flexible container which is comprised of a sealed bag made of soft resin film and capable of being deformed from its flat shape to a cylindrical expanded shape, a content discharging port arranged at an end part of the bag, and a pair of flexible plates adhered to each opposing side surface in the flat shape of the bag and deformable. SOLUTION: A pair of plate members can be folded. The container is provided with a holding means for use in holding its folded shape. The holding means may be of a recess 41 or a ring 42 arranged at each of the plate members so as to be engaged with the discharging port, or a pair of connectable flaps or ropes protruded from a pair of opposing edges of the plate member toward an outside.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible container suitable for containing a liquid, particularly a high-viscosity liquid such as stencil printing ink, and more particularly, to a flexible container which is flat when the contents are not filled, and The present invention relates to an expandable / contractible container which expands in a tubular shape in accordance with the filling of the container and which can be formed into a flat shape after most of the contents are discharged.

[0002]

2. Description of the Related Art A so-called bag-in-box or bag-in-carton packaging container for a liquid, in which a flexible inner bag such as a resin film is housed in an outer box such as cardboard or paperboard, is well known. In such containers, the inner bag shrinks and the outer dimensions decrease with the discharge of the liquid content, but the outer box does not change its shape. To reduce the size, it takes time to crush the outer box.

[0003]

Therefore, as shown in FIG. 1, a sealed bag 1 made of a flexible resin film and deformable from a flat shape to a cylindrical expanded shape, A content extraction port 2 provided at an upper end portion, and a pair of flexible plate-like bodies 31 and 32 attached from the outside to respective opposing side surfaces of the flat body 1 before filling with the content. It is conceivable to create a flexible container having the following. As shown in FIG. 2, when filling the contents, the flexible containers 31 and 32 are curved in accordance with the expansion of the bag 1, and have a cylindrical shape as a whole. When the content is a particularly high-viscosity liquid, as shown in FIG.
As shown by a dotted line, the bottom of the sealed bag 1 is moved toward the extraction port 2 and the lower half of the sealed bag 1 is displaced while being inverted so as to be turned over inside the bag 1, and the volume is reduced. To shrink. As described above, this container is flat and has a small volume before filling with the contents, does not take up space for storage and transportation, and has a size corresponding to the filling amount when filling the contents. Is advantageous in returning to a small volume.

However, in the above-described flexible container, after the contents are taken out, the length from the upper end to the lower end of the sealed bag 1 (that is, the length dimension) is as shown in FIGS. ), The content is reduced to about half when the contents are filled, but since the length dimensions of the plate-like bodies 31 and 32 do not change,
There is no change in the length of the entire container. Further, since the plate-like bodies 31 and 32 are curved once when the contents are filled, the bending distortion remains, and does not return to the flat shape before the contents are filled as shown in FIG.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a flexible container as described above, in which, after the contents are used up, the volume at the time of disposal is reduced as securely as possible, and a means for holding the volume is provided. And

[0006]

SUMMARY OF THE INVENTION According to the present invention, there is provided a sealed bag which is made of a flexible resin film and can be deformed from a flat folded shape to a cylindrical expanded shape. A content extraction port provided at an end of the bag, a pair of flexible flat portions of the bag which are attached to respective opposite side surfaces thereof and have flexibility which can be deformed in accordance with expansion of the bag. In a flexible container comprising a plate-shaped body, the pair of plate-shaped bodies is foldable, and the container is achieved by a foldable flexible container provided with holding means for holding the folded shape. Is done.

That is, according to the present invention, by making the plate-like body foldable, not only the length of the flexible container after use can be reduced, but also the bending of the plate-like body at the time of bending is eliminated. Therefore, volume reduction in the thickness direction of the container can be achieved, and the holding means for holding the folded shape of the plate-like body provides a reduction in the space required for storing and transporting discarded containers. become.

In the present invention, the plate-like body may be made of any material such as a metal plate, a plastic plate, and a paperboard as long as it has flexibility and can be easily bent by hand or the like. However, it is preferable to use paperboard for waste disposal. The pair of plate-like bodies may be separated from each other, or may be connected. In addition, in order to facilitate folding of the plate-like body, it is preferable to provide a folding curve in advance in the plate-like body. Such a folding curve may be a perforation or a half cut. Further, the folding curve may be a cutting line obtained by dividing the plate-like body into a plurality of portions in advance. In this case, the container is folded around the film of the sealed container as a fulcrum.

In the present invention, the resin film constituting the sealed container is made of cellophane, polyethylene film, polypropylene film, polyester film, nylon film, polystyrene film, polyvinyl chloride film, polyvinylidene chloride in consideration of the type of contents. Film, polyvinyl alcohol film, polycarbonate film, EVOH film, fluororesin film,
A polymethyl methacrylate film, a polybutene film, an aluminum foil, the above-mentioned film formed with an oxide thin film of Si or Al, the above-mentioned film coated with PVDC, EVOH, wax, or the like can be used in a single or multilayer form.

In the present invention, it is sufficient that the plate-like body is attached to the sealed container to such an extent that the plate-like body is not easily separated, and does not need to be firmly adhered. In particular, as shown in FIG. 3, after the contents are taken out, the lower half of the sealed container peels off from the plate and rolls up into the upper half thereof, so that the lower half of the sealed container and the plate are separated. It may or may not be glued. As such an adhesive, various adhesives such as urea resin, melamine resin, phenol resin, epoxy resin, vinyl acetate resin, acrylic resin, cyanoacrylate adhesive, polyurethane adhesive, and EVA are used. The form of the adhesive is a dry laminate type, an aqueous dry laminate type, a non-solvent type,
It can be appropriately selected from an electron beam curing type, an ultraviolet curing type, a hot melt type and the like.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring now to FIGS.
A specific example of the foldable flexible container of the present invention will be described. FIG.
9 are side views similar to FIG. 3 (c) showing a specific example of the present invention in a state after the contents are taken out, and the same elements as those in FIGS. 1 to 3 are denoted by the same reference numerals. . It should be noted that the illustrated specific examples are exemplifications, and the present invention is not limited to only the following specific examples.

The embodiment shown in FIG. 4 is similar to the container shown in FIG. 3 except that a substantially semicircular opening 41 is formed in the lower center of the plate as a holding means for holding the plate 31 or 32 in a folded shape. The same is true. This container can be inserted and engaged with the opening 41 by bending the opening 41 along the location shown by the thick broken line in FIG. It can be kept in a folded state. Therefore, the size of the container can be reduced. Further, the means for engaging with the extraction port 2 may be a cross-shaped notch provided in the plate-shaped body 31 or provided outward from the lower end of the container as shown in FIG. Ring 42
It may be. By hooking the ring 42 around the outer periphery of the extraction port 2, the container can be held in a folded shape. The ring body 42 may be an elastic body such as a rubber band.

The embodiment shown in FIG. 5 is a pair of mutually connectable flaps 43 projecting outward from a pair of opposing side edges of a container as holding means for holding a plate-shaped body in a folded shape.
It is the same as the container of FIG. 3 except that a and 43b are provided. This container is bent along a portion shown by a thick broken line in FIG. 5, and the entire bent container is flap 43a,
By surrounding the container with 43b and connecting both flaps 43a and 43b, the container can be held in a folded shape. In the example of FIG. 5, since the flaps 43a and 43b have slits 44a and 44b opened upward and downward, respectively, the two flaps 43a and 43b are connected by engaging the slits 44a and 44b with each other. be able to. However, it goes without saying that other means such as hook-and-loop fasteners and hooks can be used as the connecting means. Further, a string may be used as the holding means instead of the flaps 43a and 43b, and the folded shape of the container may be held by tying the strings to each other.

FIG. 6 shows a specific example of the folding means for holding the plate-like body in the form of a tongue piece 45a, 45b, 45c formed by cutting out the plate-like body 31 or 32.
2, except that notches 46a, 46b, 46c are formed at positions of the plate-like body opposed to the tongue pieces 45a, 45b, 45c when the tongue pieces are folded. It is the same as the container of FIG. This container is shown in FIG.
Of the tongue pieces 45a, 4b
By making cuts 46a, 46b, and 46c in 5b and 45c, respectively, the container can be held in a folded shape. Also, a tongue piece 45 provided at the lower center of the plate-like body
c can also be used to insert and engage the opening of the extraction port 2 to hold the container in a folded shape.

The embodiment shown in FIG. 7 is similar to the embodiment shown in FIG. 7 except that a bonding means 47 such as a double-sided tape is provided on the surface of the lower half of the plate 31 or 32 as holding means for holding the plate in a folded shape. The same as the container No. 3. The container is formed by folding the plate-like body 31 or 32 so that the bonding means 47 faces the upper half of the plate-like body, and bonding the lower half and the upper half with the bonding means 47. Can be held in a folded shape. Of course, it goes without saying that the bonding means 47 may be arranged in the upper half of the plate-like body 31 or 32.

In the specific examples shown in FIGS. 4 to 7, the embodiment in which the container is folded in two along the folding curve in the width direction has been described as an example. However, as shown in FIG. Is also possible. In addition, as shown in FIG. 9, the container can be folded along a vertical folding curve.

[0017]

According to the present invention, in a expandable and contractible flexible container in which a plate is attached to both sides of a sealed bag, the plate can be folded and the folded shape is maintained. Not only can the size and volume of the flexible container after use be reduced, but also the container can be stably held in the folded state, not only before filling, but also especially after use. This can contribute to reducing the space required for storing and transporting the container.

[Brief description of the drawings]

FIG. 1 (a) is a perspective view showing an expandable and contractible flexible container in which a plate is attached to each of opposing sides of a sealed bag before filling contents, and FIG. 1 (b) is a perspective view showing (a). FIG.

FIG. 2 is a view similar to FIG. 1, showing the container of FIG. 1 in a state of filling contents.

FIGS. 3 (a) and (b) are views similar to FIG. 1 showing the container of FIG. 1 in a state after the contents have been taken out, and FIG. 3 (c) is a front view thereof.

FIG. 4 is a view similar to FIG. 3 (c), showing a specific example of the foldable flexible container of the present invention.

FIG. 5 is a view similar to FIG. 3 (c), showing another specific example of the foldable flexible container of the present invention.

FIG. 6 is a view similar to FIG. 3 (c) showing another specific example of the foldable flexible container of the present invention.

FIG. 7 is a view similar to FIG. 3 (c), showing another specific example of the foldable flexible container of the present invention.

FIG. 8 is a view similar to FIG. 3 (c), showing another specific example of the folding type of the folding type flexible container of the present invention.

FIG. 9 is a view similar to FIG. 3 (c), showing another specific example of the folding type of the folding type flexible container of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Sealed container, 2 ... Extraction port, 31, 32 ... Plate-like body, 41
... opening, 42 ... ring, 43a, 43b ... flap, 44
a, 44b: slit, 45a, 45b, 45c: tongue piece, 46a, 46b, 46c: cut, 47: bonding means

Claims (7)

[Claims] 1. A sealed bag which is made of a flexible resin film and can be deformed from a flat shape to a cylindrical expanded shape, a content extraction port provided at an end of the bag, and the bag. A flexible container comprising a pair of plate-like bodies having flexibility, which are attached to respective opposed side surfaces in a flat shape of the bag and which can be deformed in accordance with expansion of the bag body. Is a collapsible flexible container, further comprising holding means for holding the folded shape of the container. 2. The foldable flexible container according to claim 1, wherein the holding means is a cutout or an annular body provided in the plate-shaped body so as to engage with the extraction port. 3. The foldable type according to claim 1, wherein the holding means is a pair of interconnectable flaps or strings projecting outward from a pair of opposite edges of the plate-like body. Flexible container. 4. The holding means includes a tongue formed by cutting the plate and a tongue at a position facing the tongue when the plate is folded. 2. The foldable flexible container according to claim 1, comprising a notch provided in the foldable flexible container. 5. The foldable flexible container according to claim 1, wherein said holding means comprises bonding means for bonding between surfaces of the plate-like bodies facing each other when said plate-like body is folded. 6. The foldable flexible container according to claim 1, wherein the plate-shaped body is provided with a fold curve formed of perforations or half cuts to facilitate folding. 7. The foldable flexible container according to claim 1, wherein the plate-like body is previously cut into a plurality of portions to facilitate folding.