JP2001097405A - Refilling pouch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refilling pouch having no problems in the practical use and to be securely unsealed on the position of an easily unsealing means provided on the pouch and dealing with a liquid sagging prevention bottle. SOLUTION: A pouring section 6 of the nozzle shape facing obliquely upward by notches 7a and 7b formed of the upper face side and the side face side is formed on an upper corner, and an easily unsealing means 9 for cutting off the end of the pouring section 6 is provided on a position connecting the notches 7a and 7b on both sides of a refilling pouch, and the shape of the notch 7a on the upper face side is formed into the U-shape or the V-shaped with a bottom section formed round, and a notch 10 used as a cue of the easily unsealing means is formed on the bottom of the notch 7a. A knob section 8 and an upper side section positioned on the side of the knob section are gripped and twisted in the reverse direction to simply and securely carry out the unsealing by the easily unsealing means 9. Although a pouring outlet formed after unsealing is not formed into the pointed shape, the pouring outlet can still be dealt with a liquid sagging prevention bottle and no problems are generated in the practical use.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refill pouch in which a liquid content having fluidity is sealed and packaged, and the content liquid is transferred to another container at the time of use.

[0002]

2. Description of the Related Art Generally, liquid detergents and the like are sold in plastic bottles which are convenient for use, but from the viewpoint of environmental problems, these plastic bottles are used repeatedly without being discarded once. For this purpose, refill pouches containing replenishing liquid detergents and the like are also sold at the same time.
When transferring the contents of the refill pouch to a plastic bottle, the corner of the pouch is often cut off with scissors or torn from the notch, and opened. Further, recently, a pouch itself is provided with a nozzle-shaped spout, and the tip of the spout is cut out and poured into a bottle.

A pouch as shown in FIG. 1 has been proposed as a refill pouch having the above-described nozzle-shaped spout, and some of the pouches have already been put to practical use. The body of the refill pouch P shown in FIG. 1 is formed in a standing pouch form. Specifically, the bottom 1 is formed in a gusset form in which the film is folded inward according to a conventional method, and a semicircular notch is provided near the lower end on both sides of the film folded inward, so that the boat bottom is formed. It is heat-sealed by the bottom heat-sealing part 2. Further, the body of the pouch P is formed by heat-sealing both side edges of the front and rear two wall films 5 with the body heat seal portion 3. And in the upper corner of pouch P,
The upper side cutout 7a and the side side cutout 7b provide a nozzle-shaped spout 6 that is directed obliquely upward. The upper side cutout 7a has a shape forming a knob 8, and the side side cutout 7a.
b is shaped so that it can be easily applied to the mouth of the bottle. Then, a half-cut line 9 by laser light irradiation and a notch 7a on the upper side are connected to a position connecting the notches 7a and 7b on both sides.
Is provided with a notch 10 for opening. Note that C in FIG.
Is a bulging portion provided on the wall film 5 of the pouch P for facilitating the pouring of the content liquid.

[0004]

The refill pouch shown in FIG. 1 described in the prior art is a product obtained by filling the contents from the upper heat seal portion 4 and heat sealing the relevant portion. Then, when the container is opened along the half-cut line 9 from the notch 10 at the time of use, a nozzle having a sharp tip is formed, so that the nozzle can be inserted into the mouth of the bottle and the injection operation can be easily performed. At the time of this opening, if the vicinity of the knob portion 8 and the notch 10 is picked and twisted in the opposite direction, the opening can be successfully opened from the notch 10. However, because of the ease of picking, the picking portion 8 and the upper side beside it are often inevitably gripped and twisted in the opposite direction. When such a force is applied, stress is not concentrated at the notch 10, There is a problem that it cannot be opened at the half cut line 9. Therefore, even with the easy opening means, cutting with scissors may occur.

On the other hand, recently, a dripping prevention bottle has been used which makes it easy to transfer a liquid from a pouch (see, for example, JP-A-11-124109). Specifically, a nozzle cap is attached to the neck of the bottle, and the nozzle cap includes an outer cylinder portion, an annular connecting portion protruding from the inner surface thereof, and a peripheral edge of an opening formed in the connecting portion. It consists of a protruding tubular nozzle that rises upward, and has a cutout groove formed downward from the upper end of the nozzle. When the liquid is transferred from the pouch to such a bottle, any shape and structure of the pouch may be used as long as the vicinity of the outlet can be inserted into the cutout groove of the bottle. Further, the notch groove for inserting the pouch may be formed from the upper end to the lower end of the nozzle portion, whereby the edge of the pouch can be inserted deeper, and the position of the pouch can be further stabilized, The liquid flowing down on the upper surface of the connecting portion can be returned to the inside.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems and background, and an object of the present invention is to provide a pouch that can be reliably opened by an easy opening means provided on a pouch and has a small diameter. It is an object of the present invention to provide a refillable pouch which is not suitable for transfer to a bottle but has practically no problem that can be used for a dripping prevention bottle.

[0007]

In order to achieve the above object, a refill pouch according to the present invention is provided with a nozzle-shaped spout which is directed obliquely upward at an upper corner by notches on an upper side and a side. In a refillable pouch provided with an easy-opening means for cutting off the tip of the spout at a position connecting the cutouts on both sides, the shape of the cutout on the upper side is U-shaped or V-shaped with a rounded bottom. Together with
The notch is provided with a notch at the bottom of the notch for opening the easy opening means.

[0008] In the above configuration, it is preferable that the opening start direction of the easy opening means is a direction perpendicular to a tangent to the bottom of the notch.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The easy-opening means provided on the pouch of the present invention is preferably simple and preferably designed so that the tip of the formed outlet is formed in a straight line. Is also possible. For example, it may be a combination of a straight line and a curve, or may be composed of only a curve.

As the easy opening means, a method of providing a half-cut line by laser light irradiation or the like, or a method of laminating a uniaxially stretched film in a laminated film of a pouch (in this case, the stretching direction of the uniaxially stretched film is Used in accordance with the opening direction of the spout).
When the half-cut line is provided, the half-cut line is not limited to a continuous half-cut line, and may be provided with an intermittent half-cut line such as a perforated shape. In any case, an I-shaped or V-shaped notch is provided at the bottom of the U-shaped or V-shaped notch serving as the opening start position.

If the opening start direction of the easy opening means is set to a direction orthogonal to the tangent to the bottom of the notch, the opening operation can be performed most effectively. The reason for this is that at the time of opening, the knob and the heat seal portion are twisted in opposite directions, but the force is most concentrated in the direction orthogonal to the tangent line. When a plurality of half-cut lines are provided in parallel as easy opening means, at least one of the half-cut lines may satisfy this requirement.

It is desirable that the shape of the notch on the side of the pouch be smoothly connected in an S shape from the tip of the spout toward the side of the pouch. For example, it is preferable that the straight line portion of the spout portion is connected to an arc, further connected to an oppositely directed arc, and the oppositely directed arc is connected to a side. By making the shape of the notch on the side side into a smooth S-shape in this manner, a shape applicable to the bottle is formed in the spout portion, and the liquid flows smoothly at the time of transfer.

The refill pouch of the present invention is not particularly limited in the form of the pouch, but is preferably a so-called standing pouch. By adopting the standing pouch in this way, it becomes self-supporting, easy to handle, and excellent in appearance.

Further, the refill pouch of the present invention preferably has a structure in which at least one wall film constituting the pouch has a bulge at least in the vicinity of the spout. It is preferable that the bulging portion has a shape in which the upper surface and both side surfaces are planar, that is, the cross section is trapezoidal. Alternatively, the trapezoid may have a multi-stage shape in which steps are further added. By providing such a bulging portion, the cutout of the spout opening portion is simply cut off and opened, and the discharge opening with good shape retention is automatically opened.

As the film used for the refill pouch of the present invention, a laminated film mainly composed of a plastic film is mainly used, but is not particularly limited. For example, a known laminated film used for various liquid pouches Can be used. From among these, suitable ones can be freely selected and used according to the use conditions such as the type of the content liquid to be stored and the presence or absence of heat treatment after filling.

Typical examples of the laminated film that can be preferably used include those having the following layer constitutions, but are not limited thereto, and various combinations of laminated films can be used. .

(1) ON film / adhesive / L·LDP
E film (sealant layer) (2) ON film / adhesive / uniaxially stretched HDPE film / adhesive / L / LDPE film (sealant layer) (3) ON film / adhesive / uniaxially stretched PP film /
Adhesive / L·LDPE film (sealant layer) (4) ON film / Adhesive / Uniaxially stretched PP film /
Adhesive / Aluminum foil / Adhesive / L·LDPE film (Sealant layer) (5) ON film (Silica vapor deposition layer) / Adhesive / Uniaxially stretched HDPE film / Adhesive / L·LDPE film (Sealant layer) (6) ON film / anchor coat layer / co-extrusion coat layer (HDPE layer / L-LDPE layer) (sealant layer is L-LDPE layer) (7) ON film / anchor coat layer / co-extrusion coat layer (HDPE layer / LDPE layer) / Adhesive / L ・ LDP
E film (sealant layer) (8) PET film / adhesive / aluminum foil / adhesive / ON film / adhesive / L / LDPE film (sealant layer) (9) PET film / adhesive / aluminum foil / adhesive / ON film / adhesive / CPP film (sealant layer) (10) PET film / adhesive / ON film / adhesive / aluminum foil / adhesive / L / LDPE film (sealant layer) (11) PET film / adhesive / ON film / adhesive / aluminum foil / adhesive / CPP film (sealant layer) (12) PET film / adhesive / EVOH film / adhesive / ON film / adhesive / CPP film (sealant layer)

In the above, the ON film is a biaxially stretched nylon film, the L / LDPE is a linear low density polyethylene, the HDPE is a high density polyethylene, the LDPE is a low density polyethylene, the PP film is a polypropylene film, and the PET film is biaxially stretched. A polyethylene terephthalate film and an EVOH film refer to a saponified ethylene-vinyl acetate copolymer film, and a CPP film refers to a non-stretched polypropylene film. The anchor coat is a kind of primer coat which is previously coated on the substrate film side in order to improve adhesiveness when laminating a resin by extrusion coating.

In the construction of the laminated film, ON
Films and PET films serve as base films to impart mechanical strength and printability to pouches. The uniaxially stretched HDPE film and the uniaxially stretched PP film can be imparted with tearing directionality by using the stretching direction so as to coincide with the tearing direction when opening the spout of the pouch. In addition, an aluminum foil, a silica deposition layer, an EVOH film, and the like are laminated to provide gas barrier properties. In addition, two examples of the sealant layer, an L-LDPE film and a CPP film, have been described. However, the L-LDPE film has heat sealing stability and content resistance, such as stress cracking resistance to a surfactant. Excellent, C
The PP film is excellent in heat resistance and low odor, and is suitable for packaging contents requiring these properties.

In the sealant layer, in addition to the above, depending on the contents to be filled, ethylene / α-olefin copolymer, ethylene / vinyl acetate copolymer, ethylene / acrylic acid copolymer, ethylene / acrylic ester copolymer may be used. Polymers, ionomers, polyester resins and the like can also be appropriately selected and used.

In particular, the ethylene / α-olefin copolymer obtained by polymerization using a single-site catalyst such as a metallocene catalyst has a narrow molecular weight distribution and a stable copolymerization ratio, so that the low-temperature heat sealability and It is excellent in hot sealability, and is suitable for a sealant layer of a pouch having a step due to a difference in film overlap with a heat seal portion such as a standing pouch in that the occurrence of pinholes due to seal missing can be prevented. .

Further, by using a blend of the copolymer and an olefin elastomer, the heat fluidity of the sealant layer is improved, and the generation of pinholes due to the step can be more effectively prevented.

[0023]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 is a front view showing an embodiment of the refill pouch according to the present invention, and FIG. 3 is an enlarged view of a main portion near a spout in the pouch of FIG. The same reference numerals are given.

The refill pouch P shown in FIGS. 2 and 3 has its main body formed into a standing pouch in the same procedure as described above. The upper corner of the pouch P made of the bag is provided with a nozzle-shaped spout 6 that is directed obliquely upward by a notch 7a on the upper side and a notch 7b on the side, and the notch 7a on the upper side is provided with a knob 8. The cutout 7b on the side and the side to be formed are shaped so that they can be easily applied to the mouth of the bottle. In this embodiment, the notch 7a on the upper side is trimmed in a U-shape. The notch 7b on the side is formed in a shape smoothly connected in an S-shape from the tip of the spout 6 toward the side of the pouch P. Specifically, a circular arc is formed from the straight portion of the spout 6 (Curvature: R ₁ ), and is further connected to a reverse arc (curvature: R ₂ ), and the reverse arc is trimmed into a shape that connects to the side. Further, a half-cut line 9 by laser light irradiation is provided at a position connecting the notches 7a and 7b on both sides, and a notch 10 for opening is provided at the notch 7a on the upper side.

In the vicinity of the spout 6, the wall film 5 of the pouch P has a curved bulge C in the direction toward the opposite corner so that the upper surface and both side surfaces are planar. The half-cut line 9 is provided so as to cross the bulge C. Such a bulging portion C may be provided on only one of the front and rear wall films, but by providing the symmetrical shape on the both wall films so as to overlap at the same position, the effect is obtained. Can be further improved.

FIGS. 4 and 5 are views showing the cross-sectional shape of the bulging portion C provided on the wall film 5 of the refill pouch P shown in FIG. 3, and FIGS. 4 (a) and 4 (b) show the bulging portion. FIG. 5A is an enlarged cross-sectional view taken along line XX and line YY when provided only on one wall surface film 5.
(B) shows the XX line and the Y line when the bulging portions are provided symmetrically so as to overlap the same position on the wall film 5 on both surfaces.
It is an expanded sectional view in the -Y line. As shown in these figures, the bulging portion C has a top surface and both side surfaces each having a planar shape and a cross section formed in a trapezoidal shape. Excellent,
As described above, the natural opening of the outlet and the shape retention thereof are improved, and the contents can be easily poured out. Such a bulged portion C can be formed with high productivity by embossing.

By adopting the above configuration, the refill pouch P filled with a liquid content, and the upper heat seal portion 4 is degassed and sealed, is self-supporting, easy to handle, and has an appearance. Excellent. When the contents are transferred to another container, the notch 10 is cut into the half-cut line by grasping the knob 8 and the end of the upper heat seal unit 4 next to the knob and twisting in the opposite direction. 9 can be easily and reliably torn to open the spout 6. Then, the opened pouch P passes through the bulging portion C to form an edge of the discharge port, so that the discharge port is automatically opened with good shape retention.

The pouch P opened in this manner does not have a sharp outlet because the notch on the upper side is U-shaped. Therefore, it is difficult to transfer a normal bottle having a small diameter, but it is possible to transfer the bottle without any problem if the bottle is a dripping prevention bottle as described above.

FIG. 6 shows a modification of the refill pouch shown in FIGS. 2 and 3, in which the half-cut line 9 is
The half-cut line 9 is arranged so as to be orthogonal to the tangent line S at the bottom of a, and a notch 10 for opening is provided at the intersection of the half-cut line 9 and the tangent line S. If the half cut line 9 is provided in this manner, when the grip 8 and the end of the upper heat seal portion 4 are gripped and twisted in the opposite direction, the force concentrates on the half cut line 9 orthogonal to the tangent S. Therefore, the opening operation can be performed more easily.

The design example of the spout in the refill pouch shown in FIG. 6 will be described as follows. First, a discharge axis H that forms an angle θ of 45 ° with the transverse line of the pouch is set,
The position of the half cut line 9 is determined so as to be orthogonal to this. Then, a discharge port having a cut dimension a (12 to 20 mm) is set on the half cut line 9 so as to be symmetric with respect to the discharge axis H. Next, while setting the seal width b (3 to 6 mm) on the half cut line 9, a point β at a / 2 + b = c from the center point α of the outlet is determined.
At the position of the point β, a U-shaped notch 7a partially including an arc perpendicular to the half cut line 9 is set. Then, a notch having a predetermined depth (about 1.5 mm) is set from the point β toward the center point α. The bag making process is performed after the spout is designed in this way.

[0032]

As described above, according to the present invention, a nozzle-shaped spout which is directed obliquely upward by the notches on the upper side and the side is provided at the upper corner, and the spout is provided at a position connecting the notches on both sides. In the refill pouch provided with an easy-opening means for cutting off the tip of the part, the shape of the notch on the upper side is U-shaped or V-shaped with a rounded bottom, and the bottom of the notch is easily formed. A notch is provided for the opening means, so the grip and the upper side next to it are gripped and twisted in the opposite direction, so that the notch can be used as a starting point and the opening can be easily and reliably opened by the easy opening means. Can be performed. In addition, since the spout formed after opening does not have a sharp shape, it is not suitable for transfer to a small bottle having a normal diameter, but there is no practical problem since it can be used for a dripping prevention bottle.

[Brief description of the drawings]

FIG. 1 is a front view of a conventional refill pouch having a nozzle-shaped outlet.

FIG. 2 is a front view showing one embodiment of a refill pouch according to the present invention.

FIG. 3 is an enlarged view of a main part near a spout in the pouch of FIG. 2;

4 is an enlarged cross-sectional view showing a cross-sectional shape of a bulge provided on a wall surface film in the pouch of FIG.

FIG. 5 is an enlarged sectional view showing another example of a bulging portion.

6 is an enlarged view of a main part near a spout in a modification of the refill pouch shown in FIGS. 2 and 3. FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bottom part 2 Bottom heat seal part 3 Body heat seal part 4 Upper heat seal part 5 Wall film 6 Injection part 7a, 7b Notch 8 Knob part 9 Half cut line 10 Notch C Swelling part P Pouch S Tangent line

 ────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Takataka Aoki 1-1-1 Ichigaya-Kaga-cho, Shinjuku-ku, Tokyo F-term in Dai Nippon Printing Co., Ltd. (reference) 3E064 AB25 EA23 EA30 FA03 HP01 HP02 HS05 HU10 3E067 AA01 BA12A EB05 EB07 EB25

Claims (4)

[Claims] 1. A nozzle-shaped spout that is directed obliquely upward by a notch on an upper side and a side is provided at an upper corner,
In a refill pouch provided with an easy-opening means for cutting off the tip of the spout at a point connecting the cutouts on both sides, the shape of the cutout on the upper side is U-shaped or V-shaped with a rounded bottom. A pouch for refilling, wherein a notch is provided at the bottom of the notch to allow easy opening means. 2. The pouch for refilling according to claim 1, wherein the opening start direction of the easy opening means is a direction orthogonal to a tangent to the bottom of the notch. 3. The pouch for refilling according to claim 1, wherein the shape of the notch on the side is a shape that is smoothly connected in an S-shape from the tip of the spout to the side of the pouch. 4. The refill pouch according to claim 1, wherein a bulge is provided on at least one of the wall films constituting the pouch at least in the vicinity of the spout.