JP2002211597A - Liquid storage container with nozzle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem that conventionally, forces are exerted to a pour port through valley fold lines and ridge fold lines so as to open the port; however, these lines are formed deeply, and hence a film breaks easily on the lines and a thick film is required, or instead of a thick film, if the cross section of a fold line is formed into a semi-spherical shape or the like, the folded part attracts attention and wrinkles are formed on a nozzle part and external appearances are injured. SOLUTION: A nozzle has a pour port formed by cutting off the forward end thereof and a protruding embossed part wherein the nozzle has nearly the same width from the pour port to the root of the nozzle and the width of the nozzle is then gradually narrowed from the root toward the base on the side of a storage part, while on each of the opposite sides of the embossed part, a skirt is formed in such a manner that its width is gradually narrowed from the root of the nozzle toward the base on the side of the storage part of the embossed part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a liquid storage container with a nozzle formed in a bag shape.

[0002]

2. Description of the Related Art As one type of liquid storage container with a liquid discharging section, a bag-shaped flexible package (pouch) used for refilling contents such as liquid detergent, liquid softener, liquid soap and the like has been marketed. Provided. Among them, Japanese Patent Application Laid-Open No. 2000-177756 discloses a technique for improving the ease of pouring during refilling in a standing pouch.

This is a packaging bag having a nozzle portion formed by heat-sealing a plastic film and having a nozzle portion, a bulging portion 5 is provided in the nozzle portion, and packaging is performed from a lower end portion on both sides of the nozzle portion or the vicinity thereof. A first valley fold line 6 is provided toward the inside of the bag, a second valley fold line 7 is provided below from or near the intersection of the first valley fold line 6, and a mountain fold is provided on both sides of the second valley fold line 7. This is a configuration in which a line 8 is provided.

[0004]

According to the prior art, although the opening state of the nozzle portion can be improved,
From the viewpoint of sufficiently keeping the opening of the nozzle portion, the first valley fold line 6, the second valley fold line 7, and the ridge fold line 8 are formed to be considerably deep, so that an improvement such as thickening the film of the packaging bag can be achieved. Otherwise, breakage will occur at each folding line portion, which is a problem in terms of cost increase and the like. Also, as a method of preventing breakage at each fold line, instead of making the film thicker, the cross-sectional shape of each fold line can be a curved surface such as a hemisphere, but then each fold line portion stands out, and packaging There is a problem that the nozzle portion of the bag looks wrinkled and the appearance is poor.

[0005] In view of the above, the present invention provides a method for forming a nozzle portion which can form an opening in a nozzle portion well and can obtain an intended opening shape without using a specially thick plastic film or sheet. The object of the present invention is to provide a liquid storage container with a nozzle part which can be made and has good appearance.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention seals a peripheral portion of a plastic film or sheet to form a liquid storage portion inside, and partially includes a liquid discharging nozzle. In the formed liquid container,
The nozzle has a spout portion formed by cutting at the tip thereof, and the spout portion has substantially the same width from the spout portion to the nozzle root portion, and gradually from the nozzle root portion toward the housing portion side base portion. It has a convex embossment with a reduced width, and on both sides of the convex embossment, a flat base portion with a gradually reduced width is formed from the vicinity of the nozzle base to the base of the liquid embedding portion side of the convex embossment. It is.

Further, according to the present invention, there is provided a stepped portion which surrounds the outside of the skirt portion in a substantially V-shape and forms a substantially V-shaped inclined surface which is inclined downward toward the periphery of the skirt portion. Features.

[0008]

Next, an embodiment of the present invention will be described. Each figure shows an embodiment of the present invention,
FIG. 1 is an explanatory diagram of an enlarged main part of a liquid storage container with a nozzle according to one embodiment, FIG. 2 is a cross-sectional view of a state where the liquid storage container of FIG. 1 is filled with a liquid content, and FIG. FIG. 4 is an enlarged cross-sectional explanatory view, FIG. 4 is an explanatory view of a main portion of a liquid storage container with a nozzle according to another embodiment, FIG. 5 is a cross-sectional view of the liquid storage container of FIG. 5 is an enlarged cross-sectional explanatory view of the nozzle portion of FIG. 5, and FIG. 7 is an explanatory diagram of a PP cross-sectional portion of FIG.

First, a representative liquid storage container of the embodiment shown in FIGS. 1 to 3 will be described. The liquid storage container 1 includes liquid detergents, liquid softeners, liquid soaps, and the like as liquid contents to be filled therein, and a bag-like shape for storing the contents in a container such as another bottle for refilling. It is a flexible package (pouch), which can be placed upright on a table or the like with its bottom part down, so-called standing pouch. This liquid storage container 1
Has a configuration in which the periphery of a pair of plastic films or sheets positioned corresponding to the surfaces is sealed, and a liquid discharge nozzle is formed in a part. Specifically, the front surface member 2, the back surface member 3, and the bottom surface member 4 which are positioned corresponding to the surface are heat-sealed at the peripheral portion as described later to form a bag. The material 3 and the bottom material 4 are each formed of a plastic film or sheet of any of a transparent material, an opaque material, and a translucent material.

The structure of the film or sheet is, for example, a double-layer structure in which the outer layer is a nylon film, the inner layer is a linear low-density polyethylene film, the outer layer is a biaxially stretched nylon film, and the intermediate layer is a uniaxial film. Stretched polyolefin film, three-layer structure with inner layer made of linear low-density polyolefin, outer layer with nylon film, intermediate layer with aluminum vacuum-deposited polyethylene terephthalate film, inner layer with three layers made of linear low-density polyethylene film Structure, also, the outer layer is an aluminum oxide-deposited polyethylene terephthalate film, the intermediate layer is a nylon film, the inner layer is a three-layer structure of a linear low-density polyethylene film,
The outer layer has a four-layer structure of a polyethylene terephthalate film, the outer intermediate layer is an aluminum foil, the inner intermediate layer is a nylon film, and the inner layer is a linear low-density polyethylene film.

A peripheral joint 5 between the front surface material 2 and the back surface material 3
And the joint 6 between the lower part of the front surface member 2 and the back surface member 3 and the bottom member 4 are heat-sealed, respectively. The part 7 is formed inside the liquid container 1. The outer layer is transparent, the intermediate layer is a barrier film provided with an inorganic compound vapor-deposited layer by vapor-depositing aluminum or another inorganic compound by a vacuum vapor deposition method or the like, and the liquid storage container 1 having a silver color or the like in appearance. You can also.

The liquid container 1 seals the peripheral portion of the plastic film or sheet and has the liquid container 7 inside.
And a liquid discharge nozzle 11 is formed in a part thereof. The nozzle 11 has a spout 12 formed by cutting at a tip end thereof, and a nozzle 1 from the spout 12.
1 has a convex embossment 15 having substantially the same width up to the root 13 and forming a bulge whose width is gradually reduced from the root 13 of the nozzle 11 toward the base 14 on the side of the liquid container 7. On both sides, a flat skirt embossed portion 16 having a gradually reduced width is formed from the vicinity of the base portion 13 of the nozzle 11 to the base 14 of the convex embossment 15 on the liquid storage portion 7 side.

The boundary between the convex emboss 15 and the base 16 is the first
The convex embossment 15 is divided by the fold line 17, and the convex emboss 15 has substantially the same width from the spout 12 to the base 13 of the nozzle 11 as described above, and
It has a shape whose width is gradually narrowed toward the side base portion 14. As a result, the convex emboss 15 has a tapered root shape. Further, the periphery of the base portion 16 is distinguished from its peripheral portion by a second folding line 18, is wide near the root portion 13 of the nozzle 11, and extends from there to the base 14 of the convex emboss 15 on the side of the liquid container 7. A skirt portion 16 having an upward slope is formed toward the convex emboss 15 while gradually reducing the width. The second fold line 18 may be formed in a ruled line shape, a slightly raised mountain shape or a step, but is formed in a narrow groove shape to form a valley as described later. The bending performance can be further improved. FIG. 7 shows a cross-sectional shape of the nozzle 11 in the central axis direction.

The nozzle 11 is connected to the upper side 8 of the liquid container 1.
And is formed to protrude obliquely upward so as to fit within the area of the corner formed by the side edge 9. This is because if the nozzle 11 protrudes outward from the extension of the upper side 8 and the side side 9, it will be in the way when many liquid containers 1 are packed or when they are displayed together with other products. This is to prevent such a thing. The spout portion 12 formed at the tip of the nozzle 11 is a cuttable portion 1 extending obliquely downward from the upper side 8 to the side 9 of the liquid container 1.
0. The severable portion 10 may be formed so that it can be cut with scissors. However, there is a method in which a corner is cut by hand or a notch is cut by hand so as to be perforated in advance. . The location of the severable portion 10 may be indicated by printing on the front surface material 2 or the back surface material 3 or indicated by a cutout formed on the upper side 8 or the side side 9.

With this configuration, when the liquid container 7 is filled with the liquid content and the spout port 12 is formed to pour out the content, the convex emboss 15 is moved to the base 14 thereof.
And the width of the skirt portion 16 gradually decreases from the base 13 of the nozzle 11 to the base 14 of the convex embossment 15 on the side of the liquid container 7, so that when the liquid is discharged, the convex emboss The action force concentrates on the base 14 on the liquid storage unit 7 side, and the deepest valley is formed around the base 14, and the second folding line 18 is formed as a valley as shown in FIG. The spout 1 of the nozzle 11
2 opens greatly. In order to further open the spout 12 of the nozzle 11 by this action, the convex emboss 1
By making the shape of No. 5 gradually decrease in height toward the base 14 as shown in FIG.
That can be achieved.

Further, even if the contents of the liquid container 7 are reduced due to the discharge of the contents, the surface material 2 and the back surface material 3 near the spout 12 are less likely to stick together due to the presence of the base 16. As a result, the spout 12 is prevented from being clogged, and the contents can be satisfactorily extracted to the end. In addition, the effect is improved because the base portion 16 is inclined upward to the convex emboss 15.

In order to further improve the above-mentioned effect, a step portion 20 is formed outside the skirt portion 16 so as to surround the skirt portion 16 in a substantially V-shape and project outward.
The step 20 has its left and right ends facing the root 13 of the nozzle 11 and converges near the widened area of the skirt 16.
Due to the formation of the stepped portion 20, a substantially V-shaped inclined embossed surface 19 that is inclined downward toward the second fold line 18 that defines the periphery of the hem base portion 16 is formed outside the hem base portion 16, and the second fold line is formed. With 18 as a distinct valley, a sufficient slope is formed on both sides.

FIGS. 4 to 6 show another embodiment of a liquid container with a nozzle portion. Here, the same reference numerals are given to the same functional units as those in FIGS. 1 to 3, and the configuration and functions are the same as those described above, and thus description thereof will be omitted. 1 to 3 is a convex emboss 1
Reference numeral 5 denotes a top 21 having a substantially flat shape. In order to form the top 21, a third folding line 22 is formed on both sides, so that both sides of the top 21 are directed toward the base 16, that is, toward the third folding line 22. A steep downward slope 23 is formed.

As described above, by forming the substantially flat top 21 on the convex embossment 15, when the spout 12 is formed by cutting, the surface material 2 and the back material 3 near the spout 12 are not formed. The acting force acting in the direction away from each other acts, the spout 12 is easily opened, and even if the contents of the liquid container 7 are reduced due to the ejection of the contents, the spouts 16 are still present due to the presence of the base 16. Surface material 2 near 12
And the backing material 3 is hard to stick to each other, so that the spout 12 is prevented from being clogged, and the contents can be extracted well to the end.

The functional portion composed of the nozzle 11, the convex embossment 15, the skirt portion 16, the step portion 20, the folding lines, and the like is provided on one side of the liquid container 1, that is, the surface material 2 or the back material 3. Although it may be formed on either side, in order to quickly pour out the stored liquid, the liquid storage container 1 is formed symmetrically on both side surfaces, that is, on both the front surface member 2 and the back surface member 3. Can be achieved.

The present invention is not limited to the above embodiments, and various changes can be made without departing from the technical scope of the present invention, and the present invention includes various embodiments.

[0022]

According to the first aspect of the present invention, the convex emboss is narrowed toward the base thereof, and the width of the base portion is gradually reduced from the base of the nozzle to the base of the convex emboss on the liquid storage side. Due to this, the acting force concentrates on the convex embossing at the base of the liquid container side, and the nozzle 11
Can be widely opened, and even if the contents are reduced, the surface material and the back surface material near the spout become difficult to adhere to each other, and the spout is prevented from being clogged, and the contents can be extracted well to the end. it can.

According to the second aspect of the present invention, the step portion forms a substantially V-shaped inclined surface which is inclined downward toward the periphery of the skirt portion, and the periphery of the skirt portion is formed as a clear valley. Since a sufficient inclination is formed on both sides, the concentration of the acting force on the liquid storage unit side base of the convex emboss can be increased, and the spout port of the nozzle can be widely opened.

[Brief description of the drawings]

FIG. 1 is an enlarged explanatory view of a main part of a liquid storage container with a nozzle according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a state where the liquid container in FIG. 1 is filled with a liquid content.

FIG. 3 is an enlarged cross-sectional explanatory view of a nozzle unit in FIG. 2;

FIG. 4 is an enlarged explanatory view of a main part of a liquid storage container with a nozzle according to another embodiment of the present invention.

FIG. 5 is a cross-sectional view showing a state where the liquid container in FIG. 4 is filled with a liquid content.

FIG. 6 is an enlarged cross-sectional explanatory view of a nozzle unit in FIG. 5;

FIG. 7 is an explanatory view of a section taken along line PP of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Liquid storage container 2 ... Surface material 3 ... Back surface material 4 ... Bottom material 5 ... Joining part 6 ... Joining part 7 ... Liquid storage part 10 ... Cutable part 11 ... Nozzle part 12 ... Spout Part 13: Base part of nozzle 14 ... Base part of convex emboss on liquid storage part side 15 ... Convex emboss 16 ... Base part 17 ... First fold line 18 ... Second fold line 19 ... Substantially V-shaped inclined surface 20 ... Step part 21 ... top 22 ... third fold line 23 ... slope

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Toshiyuki Maeda 1-5-1, Taito, Taito-ku, Tokyo Toppan Printing Co., Ltd. F-term (reference) 3E064 AB25 BC18 EA05 EA12 EA23 FA04 HS05

Claims (2)

[Claims] 1. A liquid storage container in which a liquid storage portion is formed inside by sealing a peripheral portion of a plastic film or sheet, and a liquid discharge nozzle is formed in a part of the liquid storage container.
The nozzle has a spout portion formed by cutting at the tip thereof, and has a width substantially equal from the spout portion to the nozzle root portion, from the vicinity of the nozzle root portion to the liquid storage portion side base portion. It has a convex emboss whose width is gradually narrowed, and on both sides of the convex emboss, a skirt portion whose width is gradually narrowed from the nozzle root portion to the liquid storage portion side base portion of the convex emboss is formed. Liquid storage container with nozzle. 2. A step according to claim 1, further comprising: a step portion surrounding the outside of the skirt portion in a substantially V-shape to form a substantially V-shaped inclined surface inclined downward toward the periphery of the skirt portion. A liquid storage container equipped with a nozzle.