JP2002284143A - Easy-to-disassemble gable top paper container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gable top paper container, the top portion of which can be opened with relatively weak force. SOLUTION: An (adhesive) interposed layer (a) is provided on the outside surface of at least one of a pair of inside laminating pieces 17 and 17 folded inwardly by folding pieces 15 and folding-back pieces 16 of a top seal portion 18.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid paper container in which a used liquid paper container such as a gable-top type paper container having a gable roof shape is reused or folded to reduce the volume and facilitate disposal. In particular, the present invention relates to a gable-top type paper container in which the disassembly of the top portion is improved (the disassembly is imparted).

[0002]

2. Description of the Related Art As liquid paper containers for sake, juice and the like, goebel top paper containers in which the top of the container body is formed into a gable roof type are widely distributed. The layered structure of the laminated sheet constituting the paper container is, for example, a composite laminated material such as polyethylene / paper / ethylene-acrylic acid copolymer / polyethylene terephthalate film / silicon oxide vapor-deposited thin film / adhesive / polyethylene. ing.

[0003] However, with the enforcement of the Containers and Packaging Recycling Law (formal name, “Act on the Promotion of Separate Collection and Recycling of Containers and Packaging”), the recycling of used paper containers and the reduction of garbage during disposal are reduced. It has become necessary to dismantle empty containers after use for the purpose of recycling.

As a method of dismantling a container, generally, as shown in FIG. 3, a top seal portion of a gable roof type portion at the top of the container is firstly pushed outward by a finger so as to be torn to the left and right, and the opposite side is opened. Similarly, the top seal portion at the top is separated into a cross shape (primary opening).

[0005] Next, the opposing flaps of the cross-shaped top seal portion are firmly grasped with fingers, and are pulled outward along a diagonal line to open the top. Pull the opposite flap outwards along the diagonal as well,
Open the top completely (secondary opening).

[0006] Finally, the body and bottom are cut open with scissors or the like, spread out in a sheet shape, and the plug portion is peeled off or cut off, and the inner side of the remaining sheet-shaped paper container is washed and dried. It is disposed of by recycling. At that time, the cut-off plug portion is separately disposed of as plastic waste by recycling or the like. In addition,
The washing and drying of the inner surface side of the paper container are not limited to the above-described cases, and may be performed at any time, such as when the contents are completely used and the secondary opening is performed.

However, since the Gebel-top type paper container is completely sealed in order to prevent liquid leakage when storing liquid, the hardly buried center portion is pressurized so that the polyethylene resin as a sealant is pressed. They tend to accumulate. Therefore, even if the paper container is to be disassembled for recycling, it cannot be easily opened by hand. In particular, the strength of the secondary opening may depend on the degree of accumulation of the polyethylene resin. Therefore, the strength of the hermetic seal is about 70 N / 15 mm wide at the time of primary opening, and there is a problem that the paper container cannot be easily opened by hand even if the paper container is to be disassembled for recycling.
In addition, in the primary opening, the gabled roof-type portion at the top of the first container is first pushed outward so as to be torn apart, so that it feels harder than the sealing strength.

[0008]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems which occur when the top of a gable-top type paper container whose top is formed into a gable roof type is opened. It is another object of the present invention to provide an easily dismantleable gable-top type paper container that can be opened at a relatively low force.

[0009]

According to a first aspect of the present invention, four side plates and a glue strip connected to one of the side plates and connected to an adjacent side plate are provided. A square tubular body having a gable-top shaped top that is folded and closed into a gable roof formed at one open end of the body, and formed at the other open end of the body. A gable-top paper container comprising a bottom and the top,
A pair of opposing roof slats connected to the side plate and another opposing set of slats are formed, and each of the shingles and the respective slats are alternately and sequentially connected in a ring shape. A pair of facing roofing plates are formed by a square-shaped inclined piece and an outer sticking piece, and a pair of opposing splints are connected to the folding piece connected to the side plate and the folding piece. And a pair of folded pieces connected to the inclined piece, and a pair of inner sticking pieces connected to the pair of folded pieces, each outer sticking piece is formed from each inner sticking piece. It is formed wider than each inner sticking piece so as to protrude, each border is a folding line, and the folding line of the folded piece and the folded piece is folded inward, and the facing end plate is folded between the roof plates, The opposite inclined pieces are folded inward, and each inner adhesive piece is weighted by the outer adhesive piece. In a gable-top paper container formed by bonding the overlapped portion as a top seal portion, at least one outer surface of a pair of inner sticking pieces folded by the folded piece and the folded piece of the top seal portion An easily dismantleable gable-top type paper container characterized in that an (adhesive) intervening layer is provided thereon.

As described above, the inner sticking piece folded by the folded piece and the folded piece of the top seal portion is
Since the (adhesive) intervening layer is provided on at least one of the outer surfaces, the (adhesive) intervening layer formed on the outer surface of the inner sticking piece acts as a seal inhibiting layer, so that the primary unsealing can be performed relatively easily. Can be.

The invention described in claim 2 is the first invention.
In the invention described in the above, the (adhesive) intervening layer formed on the outer surface of the inner sticking piece is formed in a central portion excluding an upper edge and / or a left and right edge. Container.

As described above, since the (adhesive) intervening layer formed on the outer surface of the inner bonded piece is present at the central portion excluding the upper edge and / or the left and right edges, the periphery of the inner bonded piece is provided. The parts are completely sealed and the complete sealing is maintained.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An easily dismantleable gable-top type paper container of the present invention will be described in detail below based on one embodiment. The easily dismantleable gable-top type paper container of the present invention has, for example, as shown in FIGS. 1 and 2, four side plates and a glue allowance connected to one of the side plates and connected to an adjacent side plate. A torso-shaped top (3) formed at one open end of the torso and having a gable-top shape which is folded and closed at one open end of the torso; A gable-top type paper container (1) comprising a bottom (4) formed at the other open end, and a pair of folded pieces and folded pieces of a top seal portion (18) constituting a top. An (adhesive) intervening layer (a) is formed on at least one outer surface of the inner affixed pieces (17, 17), and the opposing inclined pieces (13, 13) are formed from near the center of the upper end to both ends of the lower end. Ruled line (b) for bending toward The one having a configuration.

The laminated sheet constituting the paper container is, for example, polyethylene (20 μm thick) / paper (basis weight 4) in consideration of disposal problems such as generation of dioxin.
00 g / m ² ) / polyethylene (30 μm thick) / silicon oxide-deposited polyethylene terephthalate film (12 μm)
m) / polyethylene (60 μm thickness).

Here, the top part (3) and the method of forming the top part (3) will be described in detail. The top part (3) is composed of a pair of opposed roof plates (11, 11) connected to the side plate (21). , And another pair of facing plates (12, 12), each roof plate (11, 11) and each bearing plate (12, 12).
Are alternately and sequentially connected in a ring shape, and a pair of facing shingles (11, 11) are square-shaped inclined pieces (13, 13).
And a pair of end plates (12, 12) which are formed by a pair of side plates (12, 12), and a pair of folded plates (15, 15) connected to the side plate (21); (1
5, 15) and the inclined pieces (13, 13)
And a pair of inner sticking pieces (17, 17) connected to the pair of turned pieces (16, 16). The sticking pieces (14, 14) are formed wider than the respective inner sticking pieces so as to protrude from the respective inner sticking pieces (17, 17), and the folding pieces (15, 15) are formed with each boundary as a folding line. The facing end plates (12, 12) are folded between the roof plates (11, 11), and the facing inclined pieces (13, 13) is folded inward, and the outer sticking pieces (14,
14) polymerize each inner sticking piece (17, 17),
The overlapping portion is formed by bonding as a top seal portion (18) (see FIG. 2).

The folded pieces (15, 15) and the folded pieces (16, 1) forming the top seal portion (18) are formed.
6, 16 and 16), the (adhesion) intervening layer (a) is provided on at least one outer surface of each of the inner adhesive pieces (17, 17) folded by the inner adhesive pieces (17, 17).

(Adhesion) For the intervening layer (a), generally known printing inks, release varnishes, overprint varnishes and the like can be used. The coating thickness is, for example, when the polyethylene resin layer on the surface is about 20 μm. Is desirably about 2 to 4 μm. At this level, the inner sticking pieces on which the printed layer is formed do not adhere to each other with the sandwich seal.

Further, by forming the (adhesive) intervening layer at the central portion excluding the upper edge and the left and right edges of the inner adhesive piece, the peripheral portion of the inner adhesive piece is completely sealed. Thus, the hermeticity can be maintained. Therefore, it is preferable that the (adhesion) intervening layer is formed using the pattern coating method.

1 and 2 in the punching step.
The disassembly auxiliary ruled line (m) for facilitating separation (primary opening) of the top seal portion at the top as shown in FIG. Can be formed. At this time, the disassembly assisting ruled line may be provided on both of the pair of inclined pieces, but in this case, if one of the inclined pieces is provided with an opening for attaching a plug as shown, the It is preferable not to provide it near the plug attachment part so as not to affect the operation. Also, the inclined piece (13) and the outer sticking piece (14)
In the vicinity of the ridge line which is the boundary with the above, either may or may not be provided. Further, although not shown, the folding ruled line may be provided at a position corresponding to the adhesive margin piece (22).

A sleeve is prepared from the liquid paper container blank (20) thus prepared, and the sleeve thus obtained is set in a general filling and sealing machine, and a gable roof-like top (3) shown in FIG. A gable-top type paper container (1) having

The top (3) of the prepared gable-top type paper container (1) was opened by the method shown in FIG. 3 described above. Opening was relatively easy.

In particular, when the top seal portion of the gable roof-type portion at the top is first pushed outward by a finger so as to tear right and left, and the other side is similarly pushed open to separate into a cross shape (primary opening). (Adhesion) By providing the intervening layer, it can be opened with a weak force.

[0023]

As described above, in the easily dismantleable gable-top type paper container of the present invention, the adhesive strength of the top seal portion is reduced by interposing a varnish or a printing ink in a surface layer in a pattern at the sticking portion on the top. Can be opened easily.

In addition, the provision of the disassembly assisting ruled line on the inclined piece of the roof shingle serves as a guide and reduces the strength, particularly when the top seal portion of the gable roof-type portion is pushed outward so as to tear. It is possible to stably and outwardly spread it with a weak force, and disassembly becomes easy.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of an easily dismantleable gable-top type paper container of the present invention.

FIG. 2 is a development explanatory view showing one embodiment of a gable-top type paper container.

FIG. 3 is an explanatory view showing one embodiment of a method of disassembling the top of a gable-top type paper container.

[Explanation of symbols]

 1 ‥‥ Gable-top paper container 2 ‥‥ Trunk 3 ‥‥ Top 4 ‥‥ Bottom 11 ‥‥ Roof plate 12 ‥‥ Wife plate 13 ‥‥ Inclined piece 14 ‥‥ Outer sticking piece 15 ‥‥ Folding piece 16 ‥‥ Folded Piece 17 ‥‥ inner sticking piece 18 ‥‥ top seal portion 20 ‥‥ liquid paper container blank 21 ‥‥ side plate 22 ‥‥ glue margin a ‥‥ (adhesion) intervening layer m ‥‥ disassembly auxiliary rule line n ‥‥ folding rule line

Claims (2)

[Claims] 1. A square tubular body having four side plates, a glue piece connected to one of the side plates and connected to an adjacent side plate, and one opening of the body. A gable-top paper container comprising a gable-top top folded and closed in a gable roof shape formed at an end and a bottom formed at the other open end of the trunk, wherein the top is A pair of opposing roof slats connected to the side plate and another opposing pair of slats are formed, and each roof slat and each slat are alternately and sequentially connected in a ring shape.
A pair of opposing roof plates are formed by a square-shaped inclined piece and an outer sticking piece, and a pair of opposing splints are connected to the folding piece connected to the side plate and the folding piece. And a pair of folded pieces connected to the inclined piece, and a pair of inner sticking pieces connected to the pair of folded pieces, each outer sticking piece being an inner sticking piece. It is formed wider than each inner sticking piece so as to protrude from, and as each folding line is used as a folding line, the folding line between the folding piece and the folding piece is folded inward, and the opposite end plate is folded between the roof plates A gable-top type paper container formed by folding the opposed inclined pieces inward, polymerizing each inner adhesive piece with the outer adhesive piece, and bonding the overlapped portion as a top seal portion, wherein the top seal Folding pieces and An easily dismantleable gable-top type paper container, wherein at least one outer surface of a pair of inner sticking pieces folded by a folded piece is provided with an (adhesive) intervening layer. 2. The method according to claim 1, wherein the (adhesive) intervening layer provided on the outer surface of the inner sticking piece is formed in a central portion excluding an upper edge and / or a left and right edge.
The gable-top type paper container according to the above.