JPH11278518A - Paper pack container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the usability by improving ease in discharging contents as to a paper pack container having a spout used for taking out the contents. SOLUTION: This relates to a paper pack container 10 which is provided with a container main body 11 formed in a pack shape by heat sealing a paper material and in which content is filled, and a spout 14 provided on the top panel pad 11a of the container main body 11 for taking out the content. A freely expansible nozzle part 20 is provided at the tip end of the spout 14. At the tip end of the nozzle part 20 a spout 21 for taking out the content is formed, and an extended piece 23 formed on a cap 16 is inserted in the spout 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper pack container and, more particularly, to a paper pack container having a plug used for taking out contents.

[0002]

2. Description of the Related Art Generally, a paper pack container 1 as shown in FIG. 5 is known as a container for milk, juice, liquor and the like. The paper pack container 1 can store contents for a long time and can be manufactured at a relatively low cost, and is excellent in economic efficiency. In addition, since it is made of paper, it is easy to dispose, and since various types of printing can be performed on the surface portion, it has a display effect, and its use as a container for various contents has been increasing in recent years.

[0003] This paper pack container 1 is a paper material having a waterproof structure by laminating low-density polyethylene, aluminum foil or the like on paper as a base material so that the liquid content filled therein does not leak out. 2 is used. Then, the paper material 2 is formed into a pack shape so that the contents can be filled therein, whereby the paper pack container 1 is formed. As described above, the paper pack container 1 has various advantages such as excellent economy and convenience such that it can be easily disposed of. Therefore, use as a container other than beverages is being considered. As one of them,
For example, it has been considered to use a paper pack container as a refill container for shampoo, rinse and the like (hereinafter referred to as contents).

FIG. 6 shows a conventional paper pack container 3 for refilling shampoo, rinse and the like. The paper bag 3 includes a container body 4 formed of a paper material and a stopper 5 provided on a top plate 4 a of the container body 4. The container body 4 is formed in a box shape by folding the paper material 2 in an unfolded state, and is formed into a predetermined shape by fixing predetermined seal portions 8 and 9 by heat sealing.

The plug 5 is formed of a hard resin, and a flange 7 formed at a lower end portion thereof is fixed to the container body 4 and an upper portion projects upward from a top plate 4a of the container body 4. The configuration is as follows. In addition, a screw portion is formed in this protruding portion, and the cap 6 is configured to be detachably attached. The reason why the plug 5 projects upward from the top plate 4a of the container body 4 is as follows. That is, in the paper pack container 1 having the configuration shown in FIG. 5, the upper side of the paper is cut open to form an opening, and the contents are refilled into a refillable container (not shown) from the opening. Become. However, in this configuration, since the opening is also formed of the paper material 2, the opening is not stable at the time of refilling, the contents are easily spilled, and it becomes difficult to refill the contents in the refillable container.

On the other hand, as shown in FIG. 6, the plug 5 made of a hard resin projects upward from the top plate 4a of the container body 4 so that the plug 5 is stable at the time of refilling. The contents in the container body 4 can be easily and reliably transferred to the refillable container without spilling. Further, even when the content of the container body 4 is larger than the capacity of the refillable container, and the contents remain in the container body 4, the cap 6 is screwed onto the spout 5 so that the contents can be kept until the next refilling. Deterioration of the object can be prevented.

[0007]

However, in the paper bag 3 shown in FIG. 6, due to the restriction on assembling the container body 4, the amount of the plug 5 projecting upward from the top plate portion 4a (see the arrow in FIG. 6). L3) cannot be lengthened, so that the plug 5
Therefore, there is a problem that it is difficult to pour the contents into the refillable container (that is, the usability is poor).

Hereinafter, the reason will be described. The container main body 4 is formed into a box shape by folding the paper material 2 in the developed state as described above, and is fixed to predetermined boxed portions 8 and 9 by heat sealing to form a box shape shown in FIG. Is done. FIG. 7 shows a state immediately before performing the sealing process on the sealing unit 8. This process is performed by thermocompression-bonding the seal portion 8 using a heating tool, and is performed after the plug 5 is disposed on the container body 4 in advance.

However, in the configuration in which the plug 5 is erected near the seal portion 8 as shown in the figure, the amount of projection L of the plug 5
If 3 is large, it becomes impossible to press the heating tool against the seal portion 8 to perform thermocompression bonding. Therefore, conventionally, the protrusion amount L3 of the plug 5 has to be reduced inevitably, and the usability has deteriorated. Also, the plug 5 having a small protrusion amount L3
As a configuration for improving the usability, the plug 5 is connected to the container body 4.
It is conceivable to dispose it close to the outer peripheral edge of the top plate portion 4a. However, the lower end of the plug 5 is formed with a flange portion 7 extending along the top plate portion 4a. Since the flange 7 has a function of fixing the plug 5 to the container body 4, a certain area is required to maintain the fixing strength.

Therefore, even if the plug 5 is to be disposed near the outer peripheral edge of the top plate 4a, the flange 7 comes into contact with the side plate of the container body 4 and has a predetermined size (indicated by arrow L4 in FIG. 6). (Specifically, about 10 mm) or more cannot approach the outer peripheral edge. Therefore, this also deteriorated usability. The present invention has been made in view of the above point, and an object of the present invention is to provide a paper pack container that improves usability by improving the ease of pouring contents.

[0011]

Means for Solving the Problems In order to solve the above problems, the present invention is characterized by taking the following means. According to the first aspect of the present invention, the paper material is formed into a pack by performing heat sealing, and the paper material is provided on a container main body to be filled with contents and a top plate portion of the container main body. In a paper pack container provided with a plug for taking out the contents to the outside, a nozzle portion having an extendable / contractible structure is provided at a tip end of the plug.

In the invention according to claim 2, in the paper pack container according to claim 1, the plug and the nozzle portion are integrally formed of a flexible resin, and the plug and the nozzle portion are formed integrally. A bent portion is formed at the boundary portion of.

Further, according to the third aspect of the present invention, in the paper pack container according to the first or second aspect, a cap is attached to and detached from the spout, and the cap is detachably attached to the nozzle portion. Forming an engaging portion that engages with
The cap is configured to extend the nozzle portion from the plug via the engaging portion as the cap is detached from the plug.

Each of the above means operates as follows. According to the first aspect of the present invention, since the tip of the spout provided on the top plate of the container main body and taking out the contents to the outside is provided with the nozzle portion which is configured to be expandable and contractable, the container is provided. By shrinking the nozzle portion when assembling the main body, it is possible to prevent the plug from obstructing the heat sealing process.

Further, when the contents are taken out from the container body, the amount of protrusion of the entire plug from the top plate can be increased by extending the nozzle portion, so that when the contents are poured, spillage may occur. And the usability can be improved. According to the second aspect of the present invention, the plug and the nozzle portion are integrally formed of a flexible resin, and the bent portion is formed at the boundary between the plug and the nozzle portion. Compared to a configuration in which the plug and the nozzle portion are formed as separate members, it is possible to improve the sealing performance, reduce the number of parts, and reduce the number of assembly steps. In addition, since the nozzle portion is expanded and contracted by bending the bent portion, a reliable expansion and contraction operation can be ensured.

Further, according to the third aspect of the present invention, the cap attached to and detached from the plug is formed with an engaging portion which is detachably engaged with the nozzle portion. With the configuration in which the nozzle portion is extended from the plug via the joint portion, the operation of extending the nozzle portion by removing the cap from the plug can be performed simultaneously. Therefore, usability can be further improved.

Further, since the engaging portion is detachably engaged with the nozzle portion, the cap is easily detached from the nozzle portion by further operating the cap in the detaching direction after the nozzle portion is extended. be able to.

[0018]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an external view of a paper pack container 10 according to one embodiment of the present invention, and FIG. 2 is an enlarged view showing the vicinity of a plug 14 of the paper pack container 10.
As shown in each of the drawings, the paper pack container 10 is roughly composed of a container body 11, a spout 14, a cap 16, a nozzle portion 2 and the like.
0 and the bent portion 22 and the like.

In the following description, an example in which the paper pack container 10 is used as a refill container for shampoo, rinse and the like will be described. However, the present invention can be applied to a paper pack container used for other purposes. It is. The container body 11 constituting the paper pack container 10 is formed by forming a paper material 12 into a pack shape so that contents can be filled therein. Specifically, the unfolded paper material 12 is bent into a box shape, and a predetermined seal portion (only the seal portion 13 of the top plate portion 11a is shown in the figure) is heated by a heating tool. Crimping is performed to form a container body 11 as shown in the figure.

When the container body 11 is formed, a plug 14 is attached to the paper 12 in advance. This is because it is difficult to dispose the plug 14 after assembling the container body 11. Paper material 1 constituting the container body 11
Reference numeral 2 denotes a laminate structure in which a plurality of layers are laminated using paper as a base material. Specific examples of the paper material 12 include a low-density polyethylene (LDPE) layer / paper /
A structure in which an LDPE layer / aluminum foil layer / polyethylene terephthalate (PET) layer / LDPE layer is sequentially multilayered can be used. The innermost LDPE layer among these layers functions as an adhesive for joining the opposing paper materials 12 at the seal portion 13.

Incidentally, the structure of the paper material 12 is not limited to this, and paper materials having various structures can be applied depending on the contents to be filled. For example, depending on the content, a paper material in which a low-density polyethylene (LDPE) layer / paper / LDPE layer / silica-deposited PET layer / LDPE layer is laminated from the front side may be applied. Next, the plug 14, the nozzle 20, and the bent portion 22, which are the main parts of the present invention, will be described.

The spout 14 includes a donut-shaped flange portion 18 and a cylindrical base portion 19, and the base portion 19 is provided upright at the center of the flange portion 18. I have. The bent portion 2 is provided at the upper end of the base 19.
The nozzle unit 20 is provided via the nozzle 2. This faucet 1
4 (flange portion 18, base portion 19), bent portion 22, and nozzle portion 20 are made of flexible resin (specifically, low-density polyethylene (LDPE), linear low-density polyethylene (L
LDPE) etc., so that the molding process can be easily performed.

The plug 14 having the above structure is used for the container body 1.
It is fixed to one top plate 11a. Specifically, an opening is formed in the top plate 11 a of the container body 11, the base 19 of the plug 14 is inserted into the opening, and the flange 18 is connected to the top 1.
The inside of 1a is joined (for example, welded or bonded), whereby the plug 14 is fixed to the container body 11. At this time, the stopper 14 is fixed to the container body 11 in a liquid-tight manner.
The contents do not leak from the position where the stopper 14 and the container body 11 are fixed.

Since the flange 18 has a function of fixing the plug 14 to the container body 11 as described above, its area is required to be a predetermined area. As described above, it is impossible to dispose it close to the edge of. Also, as described above, the plug 14 is connected to the container body 11.
, The base 19 projects from the top plate 11a. A male screw portion 15 is formed on the outer peripheral portion of the base portion 19, and a cap 16 (having a female screw portion 17 formed thereon) is screwed to the male screw portion 15.

The cap 16 is made of polypropylene (PP)
Alternatively, it is formed of a resin such as polyethylene (PE). As shown in FIG. 2, the cap 16
An extension piece 23 extending downward is formed, and an outer ring 24 having a shape protruding outward is formed outside the extension portion 23. Also, the base 19 described above is used.
The bent part 22 and the nozzle part 20 are integrally formed in the upper part of the. 1 and 2 show the cap 16 as the plug 1
4 shows that the bent portion 26 is bent in a substantially V-shaped cross section, whereby the nozzle portion 20 has entered the inside of the base portion 19 (hereinafter, referred to as a cap mounted state).

The bent portion 22 has a substantially truncated cone shape.
It is formed thinner than the other parts (the base 19 and the nozzle 20). Therefore, the nozzle portion 20 is moved by the arrow Z1,
By displacing in the Z2 direction, the bent portion 22 is configured to bend. A take-out port 21 for taking out the contents to the outside is formed at the tip of the nozzle section 20. The take-out port 21 is provided with the cap 1 described above.
The extension piece 23 formed in the sixth piece 6 is fitted therein.

That is, with the cap 16 screwed to the base 19, the extension piece 23 is fitted into the take-out port 21, and the inner ring 24 formed at the tip thereof is connected to the take-out port 2.
1 is configured to engage with the peripheral portion. FIG. 2 shows that the extension piece 23 is formed by screwing the cap 16 to the base 19.
Indicates a state in which the inner ring 24 is fitted into the outlet 21 and the inner ring 24 is engaged with the periphery of the outlet 21.

Subsequently, the paper pack container 1 having the above-described structure is used.
The operation when the contents are refilled in the refillable container at 0 will be described. Except when the contents are to be refilled, as shown in FIGS. 1 and 2, the paper pack container 10 is in a state in which the cap 16 is mounted on the plug 14 (cap mounted state). In this state, the outlet 21 of the nozzle portion 20 is closed by the cap 16 because the extension piece 23 fits therein, so that the contents deteriorate and the leakage of the contents occurs even when the container body 11 is tilted down. Has been prevented.

In order to carry out the refilling process of the contents, first, the cap 16 is rotated in the detaching direction, and the cap 16 is moved with respect to the base 19 in the direction of arrow Z1 (the detaching direction). As described above, the extension piece 23 formed on the cap 16 is fitted into the outlet 21, and the inner ring 24 formed at the tip of the extension piece 23 engages with the peripheral edge of the outlet 21. doing. Therefore, the cap 16
Moves in the Z1 direction with respect to the base 19, so that the nozzle portion 20 is also urged to move in the Z1 direction.

When the force for detaching the cap 16 becomes stronger than the elastic force of the bent portion 22, the bent portion 22 bends so as to extend in the direction of arrow Z1, as shown in FIG.
Thereby, the nozzle portion 2 disposed above the bent portion 22
0 also moves in the direction of the arrow Z1 and becomes a state located at the uppermost part (hereinafter, this state is referred to as a use state). Therefore, FIG.
And the plug 14 in the cap-mounted state shown in FIG.
The amount of protrusion (indicated by an arrow L2 in FIG. 3) in use is greater than the amount of protrusion of the entire nozzle portion 20 and the bent portion 22 from the top plate 11a (indicated by an arrow L1 in FIG. 2).
That is, when the cap 16 is detached from the plug 14, the bent portion 22 and the nozzle portion 20 are in a state of extending in the Z1 direction.

When the bent portion 22 and the nozzle portion 20 are extended as described above, the cap 16 is further moved in the Z1 direction (removal direction), so that the engagement between the inner ring 24 and the take-out opening 21 is established. The cap 16 is released, and the cap 16 is separated from the nozzle section 20, as shown in FIG. Accordingly, the take-out port 21 formed in the nozzle section 20 is in an open state, and the content can be taken out.

As described above, in the paper pack container 10 according to the present embodiment, when the contents are taken out from the container body 11, the nozzle portion 20 extends. That is, in the cap mounted state, as shown in FIG.
4, the total protrusion amount of the nozzle portion 20 and the bent portion 22 is L
1, the cap 16 was removed and the nozzle 2
0 is extended, as shown in FIG.
The overall protrusion amount L2 of the plug 14, the nozzle portion 20, and the bent portion 22 with respect to a becomes higher (L2> L1).

As described above, since the nozzle 20 at which the content is poured is at a position higher than the top plate 11a, the position of the plug 14 is set to the upper position due to the presence of the flange 18 as described above. Even if it is located at a position spaced inward from the edge of the plate portion 11a, spillage does not occur when pouring the contents,
Usability can be improved. Further, in the present embodiment, by simply removing the cap 16 from the plug 14,
In addition, the nozzle section 20 can be extended from the base section 19. Therefore, when the cap 17 is removed from the plug 14, the nozzle portion 20 is in the extended state, and it is not necessary to separately extend the nozzle portion 20, thereby improving the usability. .

On the other hand, when the refilling process is completed, the cap 16 is attached to the plug 14. At this time, the cap 16 is mounted on the upper part of the nozzle unit 20, and then the cap 16 is pressed in the direction of arrow Z2. As a result, the bent portion 22 is bent, and the nozzle portion 20 enters the inside of the base portion 19 again. Then, by screwing the cap 16 to the plug 14, the extension piece 23 enters into the take-out port 21, and the inner ring 24 engages with the peripheral edge of the take-out port 21. The state shown in FIG.

By the way, when assembling the container body 11 as described above, the thermo-compression treatment of the seal portion 13 is performed. In this thermo-compression treatment, the nozzle portion 20 is contracted (that is, FIGS. 1 and 2). In the state shown in the figure). In this manner, by shrinking the nozzle portion 20 when assembling the container body 11, the plugs 14 from the top plate portion 11a,
Since the overall protrusion amount L1 of the nozzle portion 20 and the bent portion 22 is small, it is possible to prevent the protrusion amount L1 from hindering the heat sealing process (the heating tool can be easily applied to the seal portion 13).

As described above, according to the paper pack container 10 according to the present embodiment, the nozzle portion 20 is configured to expand and contract, thereby improving the assemblability of the container body 11 and improving the usability when refilling the contents. Can be improved together. In the above-described embodiment, the nozzle portion 20 and the bent portion 22 are provided integrally with the plug 14. However, the nozzle portion 20 and the plug 14 are not necessarily integrated.
That is, even when the plug and the nozzle unit are configured separately, and the nozzle unit slides with respect to the plug, the same effect as that of the above-described embodiment can be achieved.

However, the structure in which the plug and the nozzle portion are integrally formed as in the present embodiment has improved sealing performance, a reduced number of parts, and a smaller size than the structure in which the plug and the nozzle portion are formed as separate members. In addition, the number of assembly steps can be reduced, and the profit is large.

[0038]

According to the present invention as described above, the following various effects can be realized. According to the first aspect of the present invention, when the container body is assembled, the nozzle portion is contracted, so that the plug can be prevented from obstructing the heat sealing process. When the plug is taken out of the container, the amount of protrusion of the entire plug from the top plate can be increased by extending the nozzle portion.
Therefore, spillage does not occur when the content is poured, and usability can be improved.

According to the second aspect of the present invention, it is possible to improve the sealing performance, reduce the number of parts, and reduce the number of assembling steps, as compared with a configuration in which the plug and the nozzle are separate members. . In addition, since the nozzle portion is expanded and contracted by bending the bent portion, a reliable expansion and contraction operation can be ensured. Further, according to the third aspect of the present invention, the operation of extending the nozzle portion can be performed simultaneously by removing the cap from the plug, and the usability can be further improved.

[Brief description of the drawings]

FIG. 1 is a view showing a state in which a cap of a paper pack container according to an embodiment of the present invention is attached.

FIG. 2 is an enlarged view showing the vicinity of a plug in a paper pack container according to an embodiment of the present invention with a cap attached.

FIG. 3 is an enlarged view showing the vicinity of a plug in a cap removing operation state of a paper pack container according to an embodiment of the present invention.

FIG. 4 is a view showing a state in which a cap of a paper pack container according to an embodiment of the present invention is removed.

FIG. 5 is an external view showing an example of a conventional paper pack container.

FIG. 6 is a cross-sectional view illustrating an example of a conventional paper pack container.

FIG. 7 is a diagram for explaining a problem at the time of heat sealing.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Paper pack container 11 Container main body 12 Paper material 13 Sealing part 14 Spout 16 Cap 18 Flange part 19 Base part 20 Nozzle part 21 Take-out opening 22 Bent part 23 Extension piece 24 Inner ring

Claims (3)

[Claims] 1. A paper material is formed into a pack by heat sealing, and a container body to be filled with contents and a top plate portion of the container body are provided. A paper pack container provided with a spout to be taken out, wherein a nozzle portion having an expandable / contractible structure is provided at a tip end of the spout. 2. The paper pack container according to claim 1, wherein the plug and the nozzle portion are integrally formed of a flexible resin, and a bent portion is formed at a boundary between the plug and the nozzle portion. Paper pack container characterized by the above-mentioned. 3. The paper pack container according to claim 1, wherein a cap is attached to and detached from the plug, and an engaging portion is formed on the cap so as to be detachably engaged with the nozzle portion. A paper pack container, wherein the cap is configured to extend the nozzle portion from the plug via the engaging portion as the cap is detached from the plug.