JP7019993B2 - Refill pouch - Google Patents

Description

The present invention relates to a refill pouch for transferring the contents to a predetermined container.

Patent Document 1 discloses a refilling pouch for transferring contents such as detergent to a container having an injection port at the upper end. This refill pouch is formed by heat-bonding the facing peripheral portions of a laminate having a heat-adhesive resin layer on the innermost layer by a heat-bonding portion, and can be opened by protruding from the storage portion for storing the contents. Equipped with a part. An easy-to-open line that crosses in a straight line is formed in the pouring portion by laser processing.

When the pouring portion of the refilling pouch filled with the contents and sealed is cut on the easy-opening line, the pouring outlet opens. As a result, the contents can be poured out from the spout and the contents can be transferred to a container such as a bottle of a resin molded product.

Japanese Unexamined Patent Publication No. 2005-271963 (pages 4 to 6, FIG. 1)

However, according to the conventional refilling pouch, when the contents such as detergent are transferred to the container, the contents may diffuse from the spout and foam in the container. When the container is filled with foam, it takes time to refill because it waits until the foam is defoamed, which causes a problem that the refill pouch is not convenient.

An object of the present invention is to provide a refilling pouch that can improve convenience.

In order to achieve the above object, the present invention is formed by heat-bonding the facing peripheral portions of a laminate having a heat-adhesive resin layer on the innermost surface by a heat-bonding portion, and a storage portion for storing the contents. In a refilling pouch having a pouring portion that protrudes from the storage portion and can be opened, an easy-opening line that crosses the pouring portion is provided, and the easy-opening line flows through the pouring portion. It is characterized by being convexly curved forward in the outflow direction of the contents.

According to this configuration, when the pouring portion is opened on the easy-opening line, the spout is opened, and the peripheral edge of the spout is formed convexly forward in the outflow direction. The contents flowing out from the spout are collected and rectified in the direction of the top because they are along the periphery of the spout due to surface tension.

Further, in the refilling pouch having the above structure, the present invention has the easy-opening line in the outflow direction with respect to the direction perpendicular to the distribution direction on the inner edge of the heat-bonding portion forming both side walls of the pouring portion. It is characterized by tilting forward.

Further, in the refilling pouch having the above configuration, the present invention is the easy-opening wire in the direction perpendicular to the straight line connecting the inner edge of the heat-bonding portion forming the side walls of the dispensing portion and the intersection of the easy-opening wire. The height of the is 1 mm to 4 mm.

Further, the present invention is characterized in that, in the refilling pouch having the above configuration, the ratio of the height to the length of the straight line is 1/20 to 1/5.

Further, the present invention is characterized in that, in the refilling pouch having the above configuration, the easily opened wire is composed of a laser machined groove provided on the outer surface of the laminated body.

Further, the present invention is characterized in that, in the refilling pouch having the above configuration, the viscosity of the contents stored in the storage portion is 3000 mPa · s or less.

Further, the present invention is characterized in that, in the refilling pouch having the above configuration, the content stored in the storage portion contains a surfactant.

According to the present invention, since the easy-opening line crossing the pouring portion curves convexly forward in the outflow direction of the contents, the peripheral edge of the spout opened by opening is formed convexly forward in the outflow direction. The contents flowing out from the spout are collected and rectified in the direction of the top because they are along the peripheral edge of the spout due to surface tension, and foaming due to the diffusion of the contents is suppressed. Therefore, the convenience of the refill pouch can be improved.

Front view showing a refilling pouch according to the first embodiment of the present invention. A side sectional view showing a refilling pouch according to the first embodiment of the present invention. Enlarged view which shows the pouring part of the refilling pouch of 1st Embodiment of this invention. Schematic sectional view showing the layer structure of the laminated body which forms the refill pouch of 1st Embodiment of this invention. Schematic perspective view showing a state at the time of pouring out the contents after opening the refilling pouch according to the first embodiment of the present invention. Schematic sectional view showing the layer structure of the laminated body which forms the refill pouch of the 2nd Embodiment of this invention.

<First Embodiment>
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 and 2 show a front view and a side sectional view of the refilling pouch of the first embodiment. The refill pouch 1 stores the contents of a liquid or a viscous substance, and transfers the contents to a container such as a resin molded product bottle or a glass bottle. In particular, the contents of shampoo, treatment, detergent and the like containing a surfactant are stored in the refill pouch 1.

The refill pouch 1 has a front surface portion 2, a back surface portion 3, and a bottom surface portion 4 formed by the laminated body 30 (see FIG. 4). The front surface portion 2 and the back surface portion 3 face each other in the front-rear direction to form the body portion of the refill pouch 1, and the bottom surface portion 4 forms the bottom surface of the refill pouch 1.

The front surface portion 2 and the back surface portion 3 are thermally bonded to the opposite peripheral portions by the heat bonding portion 7. The bottom surface portion 4 is folded in half at the upper end portion 4a and sandwiched between the lower portion of the front surface portion 2 and the lower portion of the back surface portion 3. The front surface portion 2 and the bottom surface portion 4 are heat-bonded to the facing peripheral portions by the heat-bonding portion 8. The back surface portion 3 and the bottom surface portion 4 are heat-bonded to the opposite peripheral portions by the heat-bonding portion 9. As a result, a self-supporting bottom gusset type refill pouch 1 is formed.

The refilling pouch 1 includes a storage portion 10 that opens a filling port 10a at the upper end, and a pouring portion 12 that protrudes from the storage portion 10. The storage unit 10 stores the contents to be filled from the filling port 10a.

The dispensing portion 12 projects obliquely from one corner of the upper portion of the housing portion 10, and a plurality of easy-opening lines 20 crossing the dispensing portion 12 are formed on the front surface portion 2 and the back surface portion 3. A gripping portion 13 to be gripped at the time of opening is provided above the dispensing portion 12.

FIG. 3 shows an enlarged view of the dispensing section 12. The dispensing portion 12 is formed in a cylindrical shape protruding from the storage portion 10, and the heat-bonding portion 7 forming the upper side wall of the dispensing portion 12 extends upward to form the gripping portion 13.

The easy-opening wire 20 is formed by laser processing by connecting the heat-bonding portions 7 forming the upper and lower side walls of the pouring portion 12. Further, a plurality of easy-opening lines 20 are arranged side by side in the outflow direction F of the contents, and each easy-opening line 20 is convexly curved in front of the outflow direction F. The easy-opening line 20 provided in the dispensing portion 12 is only a curved line that curves convexly forward in the outflow direction F.

In the present embodiment, the easy-opening wire 20 is inclined forward in the distribution direction F with respect to the direction perpendicular to the distribution direction F on the inner edge of the heat-bonding portion 7 forming the side walls of the ejection portion 12. Both ends of the easy-open wire 20 may be substantially orthogonal to the flow direction F on the inner edge of the heat-bonded portion 7.

FIG. 4 is a schematic cross-sectional view showing the layer structure of the laminated body 30 forming the front surface portion 2, the back surface portion 3, and the bottom surface portion 4. The laminate 30 is formed by laminating the base material layer 33 on the outer surface of the innermost heat-adhesive resin layer 35. The base material layer 33 is formed of a biaxially stretched nylon film, a biaxially stretched polyethylene terephthalate film, or the like. The base material layer 33 ensures the strength, heat resistance, and the like of the laminate 30. A printing layer (not shown) for forming a pattern such as a trade name is provided on the inner surface of the base material layer 33.

The heat-adhesive resin layer 35 is made of a heat-adhesive resin and is formed of a non-stretched film such as a low-density polyethylene film, a linear low-density polyethylene film, and a non-stretched polypropylene film. The heat-bonding portions 7, 8 and 9 are formed by superimposing the facing heat-adhesive resin layers 35 on top of each other and pressurizing and heating them.

As an example of the laminate 30 of the present embodiment, the base material layer 33 and the heat-adhesive resin layer 35 can be formed of a biaxially stretched nylon film having a thickness of 15 μm and a linear low-density polyethylene film having a thickness of 130 μm, respectively.

Further, the easy-opening wire 20 is formed by a laser processing groove in which the laminated body 30 is half-cut from the outer surface of the base material layer 33 by irradiation with a laser beam such as a carbon dioxide laser. The easy-opening wire 20 may be formed by a laser machined groove provided on the inner surface of the laminated body 30. Further, a notch continuous with the easy-opening line 20 may be provided on the heat-bonding portion 7 on the gripping portion 13 side of the pouring portion 12.

In the refilling pouch 1 having the above configuration, when the contents to be filled from the filling port 10a are stored in the storage portion 10, the filling port 10a is sealed by heat adhesion.

The refill pouch 1 filled with the contents and sealed is opened by grasping the gripping portion 13 and cutting the dispensing portion 12 on the easy-opening wire 20 to open the pouring port 12a (see FIG. 5). Opens. The contents in the storage section 10 circulate in the pouring section 12 toward the pouring outlet 12a in the outflow direction F. As a result, the contents can be poured out from the pouring port 12a and the contents can be transferred to a container such as a bottle.

FIG. 5 is a schematic perspective view showing a state in which the refill pouch 1 is opened and the contents are transferred to the container. Since the dispensing portion 12 is opened on the easy-opening line 20, the peripheral edge of the spout 12a is formed to be convexly curved forward in the outflow direction F.

Since the content A flowing out from the spout 12a is along the peripheral edge of the spout 12a due to surface tension, it is collected and rectified in the direction of the top 12b. As a result, the diffusion of the content A flowing out from the injection port 12a can be prevented, and foaming in the container can be suppressed. Therefore, it is not necessary to wait for defoaming, and the refilling time can be shortened.

In particular, in the case of the easily foaming content A such as shampoos, treatments and detergents containing a surfactant having a viscosity of 3000 mPa · s or less, the effect of shortening the refilling time is great.

If the pouring portion 12 is formed thin and the opening area of the pouring outlet 12a is made small, the flow velocity of the content A becomes slow, so that foaming in the container can be suppressed. At this time, since the flow rate of the content A decreases, it takes time to refill. On the other hand, in the present embodiment, since the opening area of the spout 12a can be secured widely, foaming can be suppressed without reducing the flow rate.

Table 1 shows the results of examining the openability of the dispensing portion 12 and the foaming at the time of refilling due to the shape of the easy-opening wire 20. Each test piece has a length L of a straight line D (see FIG. 3) connecting the intersection of the inner edge of the heat-bonded portion 7 and the easy-opening line 20 to be 20 mm, and the easy-opening line 20 in the direction perpendicular to the straight line D. The height H was varied from 0.5 mm to 4.5 mm. A shampoo with a viscosity of 3000 mPa · s is used as the content.

According to Table 1, when the height H of the easy-open line 20 exceeds 4 mm, it cannot be opened on the easy-open line 20. Further, when the height H of the easy-opening wire 20 is smaller than 1 mm, foaming at the time of refilling occurs and the state waits for defoaming. Therefore, by forming the height H to 1 mm to 4 mm, it is possible to open the package well and prevent foaming. At this time, the ratio H / L of the height H of the easily opened line 20 to the length L of the straight line D is 1/20 to 1/5 (4/20).

Further, since foaming is difficult when the viscosity of the content is small, foaming can be prevented even for the content containing a surfactant having a viscosity of 3000 mPa · s or less when the height H is 1 mm to 4 mm. Further, since the content containing the surfactant is easily foamed, it is possible to prevent the content containing the surfactant having a viscosity of 3000 mPa · s or less from foaming when the height H is 1 mm to 4 mm.

According to the present embodiment, since the easy-opening line 20 crossing the pouring portion 12 curves convexly in front of the outflow direction F of the content A, the peripheral edge of the spout 12a opened by opening is in front of the outflow direction F. It is formed convexly. The content A flowing out from the spout 12a is collected and rectified in the direction of the top 12b because it is along the peripheral edge of the spout 12a due to surface tension, and foaming due to the diffusion of the content A is suppressed. Therefore, the convenience of the refill pouch 1 can be improved.

Further, the easy-opening wire 20 is inclined forward in the outflow direction F with respect to the direction perpendicular to the distribution direction F on the inner edge of the heat-bonding portion 7 forming the side walls of the pouring portion 12. As a result, the content A flowing along the heat-bonded portion 7 can be aligned with the peripheral edge of the spout 12a, and the diffusion of the content A can be further prevented.

Further, since the height H of the easy-opening line 20 in the direction perpendicular to the straight line D is 1 mm to 4 mm, it is possible to open the product well on the easy-opening line 20 and prevent foaming.

Further, since the ratio H / L of the height H to the length of the straight line D is 1/20 to 1/5, it can be opened satisfactorily on the easy-opening line 20 and foaming can be prevented.

Further, since the easy-opening wire 20 is composed of a laser machined groove provided on the outer surface of the laminated body 30, the curved easy-opening wire 20 can be easily realized.

<Second Embodiment>
Next, FIG. 6 is a schematic cross-sectional view showing the layer structure of the laminated body 30 of the refilling pouch 1 of the second embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. 1 to 5 are designated by the same reference numerals. In this embodiment, the layer structure of the laminated body 30 is different from that in the first embodiment. Other parts are the same as those in the first embodiment.

The laminated body 30 is formed by laminating an intermediate layer 34 and a base material layer 33 in this order on the outer surface of the heat-adhesive resin layer 35 of the innermost layer. The base material layer 33 and the heat-adhesive resin layer 35 are formed of the same resin film as in the first embodiment.

The intermediate layer 34 is formed of a biaxially stretched nylon film, a biaxially stretched polyethylene terephthalate film, or the like, which is made of a material different from that of the base material layer 33. The intermediate layer 34 can improve the strength, heat resistance, and the like of the laminated body 30. Further, an oxide-deposited film, a metal-deposited film, a metal foil, or the like having a barrier property may be provided on the film forming the intermediate layer 34.

As an example of the laminate 30 of the present embodiment, the base material layer 33, the intermediate layer 34, and the heat-adhesive resin layer 35 are each made of a biaxially stretched polyethylene terephthalate film having a thickness of 12 μm, a biaxially stretched nylon film having a thickness of 15 μm, and a thickness of 100 μm. It can be formed of a linear low density polyethylene film.

Further, the easily opened wire 20 is formed by a laser machined groove in which the laminated body 30 is half-cut from the outer surface of the base material layer 33 to the intermediate layer 34.

According to the present embodiment, foaming due to diffusion of the contents is suppressed as in the first embodiment, and the convenience of the refill pouch 1 can be improved.

According to the present invention, it can be widely used as a refilling pouch in which the dispensing portion is opened and the contents are transferred to a predetermined container.

1 Refill pouch 2 Front part 3 Back part 4 Bottom part 7, 8, 9 Heat-bonded part 10 Storage part 10a Filling port 12 Outlet part 12a Outlet 13 Holding part 20 Easy-opening line 30 Laminated body 33 Base material layer 34 Intermediate layer 35 Heat-adhesive resin layer F Outflow direction

Claims (6)

The facing peripheral portions of the laminate having the heat-adhesive resin layer on the innermost surface are heat-bonded by the heat-bonding portion, and the storage portion for storing the contents and the storage portion protruding from the storage portion can be opened. In the refilling pouch provided with the pouring portion, an easy-opening line that crosses the pouring portion is provided, and the easy-opening line curves convexly forward in the outflow direction of the contents flowing through the pouring portion. Then, on the inner edge of the heat-bonded portion forming both side walls of the dispensed portion, the heat-bonded portion is inclined forward in the outflow direction with respect to the direction perpendicular to the flow direction and bent at the inner edge. Formed linearly on top ,
A refill pouch characterized in that a straight line connecting the intersections of the inner edges and the easily opened lines on both side walls of the dispensing portion is formed perpendicular to the distribution direction . The feature is that the height of the easy-opening wire in the direction perpendicular to the straight line connecting the inner edge of the heat-bonding portion forming the both side walls of the pouring portion and the intersection of the easy-opening wire is 1 mm to 4 mm. The refilling pouch according to claim 1. The refill pouch according to claim 2, wherein the ratio of the height to the length of the straight line is 1/20 to 1/5. The refill pouch according to any one of claims 1 to 3, wherein the viscosity of the contents stored in the storage portion is 3000 mPa · s or less. The refill pouch according to any one of claims 1 to 4, wherein the content stored in the storage portion contains a surfactant. The refilling pouch according to any one of claims 1 to 5, wherein the easily opened wire is composed of a laser machined groove provided on the outer surface of the laminated body.

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