JP2008074479A - Bag for refilling - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bag for refilling of which the spout does not close, and also which can stably ensure the shape of the spout even after a content has become small in volume, and has a favorable refilling property. <P>SOLUTION: This bag for refilling is used to house a content by sealing in a bag body which is formed by pasting flexible laminated resin films to each other. The bag for refilling has a cut planned line for opening a spout in the tip region of a nozzle which projects from the bag body, and has both-side sealed sections and a pouring-out flow passage. At least one piece of a protruding sections raised to the front surface side which extend in the direction to the bag body central section along the pouring-out flow passage is arranged. In addition, on the surface of at least one of the protruding sections, at least one piece of half-cut lines is formed to form the bag. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a refill bag for sealing and storing contents in a bag body formed by laminating a flexible laminated resin film.

  A refill bag provided with a nozzle part having a dispensing channel at a part of the upper edge of a bag body formed by laminating a flexible laminated resin film is a liquid, granule, granule It is adopted as a bag for sealing and storing the fluid contents such as, and the refill bag that is used by transferring the contents to other containers should meet the purpose of waste reduction. , Tend to be used a lot.

In this bag for refilling, the nozzle part having both side seal parts of the two films and the content outlet channel formed between them is cut along the planned cutting line formed by a half-cut line or the like, and the spout is formed. Form to form is taken.
However, when the content is poured out from the spout formed in this way, the spout expands due to the outflow pressure of the content and can be taken out relatively smoothly when there is still a large amount of the initial content. However, when the content is reduced, the spout becomes obstructive, and it takes time to take out the content, or it is difficult to take out the content completely.

As a solution to this problem, as in Patent Document 1, a curved bulge (emboss line) is provided at the spout where the width and height are large and the width and height gradually decrease downward. Although a pouch has been proposed, only the portion with unevenness due to the embossed line forms a flow path, so the secured flow path is narrow.
In addition, as disclosed in Patent Document 2, a pouch is proposed in which a plurality of half-cut lines that are substantially orthogonal to the planned cutting line are provided in the pouring flow path, and the sealant layer extends to prevent the spout from being blocked. The opening degree of the spout differs depending on the rigidity of the layer.If the sealant layer has a high rigidity considering the appearance, the opening degree will be low.On the other hand, if the sealant layer has a low rigidity to increase the opening degree, the independence will be poor. Become. In addition, since a half-cut line is provided across the planned cutting line, when the planned cutting line is torn with a finger, the cutting is guided in the direction of the half-cut line, and the pouch is easy to tear and cut appropriately. Difficult to do. Furthermore, when the content is a liquid, the content liquid is likely to enter the gap between the half-cut lines by capillary action when the content liquid is poured out from the spout, and the liquid tends to drip.

JP 2001-80656 A JP 2004-299718 A

  In view of the problems of the above-mentioned background art, the present invention is for refilling with good refilling ability, which can ensure the shape of the spout stably even if the content of the spout does not become clogged. The purpose is to provide a bag.

The present inventors provide at least one protruding convex portion extending in the direction of the central portion of the bag body along the dispensing flow path, and further, at least one surface of the convex portion has at least one surface. The idea was that the problem could be solved by using a refill bag provided with one half-cut line.
That is, the present invention
A refill bag for sealing and storing contents in a bag body formed by laminating a flexible laminated resin film, and projecting from the bag body; A cutting line for opening a spout is provided in the tip region of the nozzle part having a protrusion, and at least one protruding convex part extending in the direction of the center of the bag body along the pouring channel is provided. Furthermore, it is a refill bag in which at least one half-cut line is provided on at least one surface of the convex portion.

  According to the present invention, the spout formed by cutting along the planned cutting line is first opened by the convex portion, and moreover, it is opened more firmly from the part of the half-cut line by its own weight when refilling proceeds. As a result, it is possible to ensure a stable shape of the spout without causing a clogging of the spout or a decrease in the opening property when the contents are reduced, and having a good refillability. It can be a replacement bag. In addition, according to the present invention, a spout can be formed without inducing cutting in a direction other than the planned cutting line, and further, even when the contents are liquid, the refill bag is difficult to dripping. You can also.

Hereinafter, the refill bag of the present invention will be described with reference to the drawings.
FIG. 1 is a front view showing an embodiment of a refill bag of the present invention in a state in which contents are stored.
As shown in FIG. 1, the refill bag 1 includes two body films 2 and 3 made of a flexible laminated resin, and one bottom film 4 made of a flexible laminated resin. The bottom edge portion of the body films 2 and 3 and the peripheral edge portion of the bottom film 4 are joined by heat fusion, ultrasonic fusion or the like to form the bottom seal portion 5, and both side edges of the body films 2 and 3. The side seal portion 6 and the top seal portion 7 are formed by joining the upper portion and the upper edge portion by heat fusion or the like, and the content accommodating portion 8 surrounded by these seal portions is formed. In the refill bag 1, the content container 8 is filled before the final stage of the above-described film joining process, for example, before the top seal part 7 of the body films 2 and 3 is joined. To do.

  In the refill bag 1, the upper corner portion of the bag is a nozzle portion 10 having both side seal portions, that is, one side seal portion 6, a top seal portion 7, and an extraction channel 9 formed therebetween. In use, a spout is formed by cutting the nozzle portion 10 along the planned cutting line 11.

2 is an enlarged front view showing the nozzle portion 10 of the refill bag 1 shown in FIG. 1, and FIG. 3 is a cross-sectional view taken along line AA of the nozzle portion 10 shown in FIG. It is.
As shown in FIG. 2, a cutting line 11 for opening a spout is provided at the tip region of the nozzle portion 10 having both-side seal portions and a pour-out channel 9, and the bag body center along the pour-out channel A convex portion 12 extending in the direction of the portion and protruding from the surface side of the refill bag 1 is provided, and a semi-cut line 13 is provided on the surface of the convex portion.

FIG. 4 is a cross-sectional view showing an opening state when the contents are poured out from the spout 15 formed by cutting the nozzle portion 10 along the planned cutting line 11, and (A) is for refilling according to the present invention. In the case of a bag, (B) and (B ′) show the case of a refill bag in which a convex portion is provided but a half-cut line is not provided on the surface thereof.
In the case of the refill bag of the present invention, the spout 15 is initially opened by the convex portion, and then the half-cut line is opened as the contents flow, as shown in FIG. Maintain a stable shape. On the other hand, in the case of a refill bag that does not have a half-cut line on the surface of the convex part, the spout opens through the convex part, but there is no half-cut line, so the opening is more difficult to proceed. When the flow rate of the content decreases, the unstable shape such as a thin flow path between the convex portions of the two films as shown in FIG. 4 (B ′) from the state of FIG. 4 (B). It becomes.

At least one convex portion 12 is provided along the extraction flow path 9. That is, one or more films may be provided on only one of the two films forming the discharge channel 9, or one or more films may be provided on both of the two films. It is preferable that the same number of convex portions 12 be provided symmetrically with their positions corresponding to each other.
The semi-cut line 13 is formed by cutting a single layer or a plurality of layers on the surface side of the laminated resin film constituting the refill bag 1 into a linear shape, and one line is formed on the surface of the raised region of the convex portion 12. Although it provides above, when there are two or more convex parts 12, it is not necessary to provide in the surface of all the convex parts 12. However, in the convex part 12 provided symmetrically with the positions corresponding to both surfaces of the nozzle part 10, it is preferable to combine the convex parts 12 having the same number of half-cut lines.
That is, as shown in FIG. 3, it is preferable that one convex portion 12 is provided on each surface of the nozzle portion 10, and one half line 13 is provided on each surface of the convex portion 12. It is an example.
In this way, the flow rate of the contents varies depending on the opening area of the spout, so the opening area is adjusted by combining the convex part provided with a half-cut line and the convex part not provided with a half-cut line, thereby reducing the flow rate. Can be adjusted.
Moreover, it is preferable to provide one half-cut line 13 along the center line of the convex portion, for example, as shown in FIG. It is also possible to provide a plurality of lines in the region of the convex portion, not the top portion.

The convex portion 12 is provided to extend in the direction of the central portion of the bag body along the extraction flow path, but the position of the end portion in the distal direction of the nozzle portion 10 is not particularly limited. However, as shown in FIG. 2, the direction in which the convex portion 12 is provided so as to intersect with the planned cutting line 11 is reflected as it is in the spout formed by cutting the shape of the convex portion 12 along the planned cutting line 11, This is preferable because a reliable opening can be obtained.
On the other hand, when the semi-cut line 13 is provided so as to intersect with the planned cutting line 11, when it is cut along the planned cutting line 11 to form the spout, it is initially cut along the planned cutting line 11. However, when the intersection of the planned cutting line 11 and the half-cut line 13 is reached, there is a possibility that the cut will occur along the half-cut line 13. Therefore, even if the half-cut line 13 is provided when the convex portion 12 is provided so as to intersect with the planned cutting line 11, it is provided so as to extend from the position adjacent to but not in contact with the planned cutting line 11 toward the center of the bag body. Is desirable.

There is no particular limitation on the method for forming the planned cutting line 11 and the half-cut line 13, and any of the known methods can be adopted. However, either one of the two films or the surface of both films can be used. From the viewpoint of productivity, it is preferable to form a continuous or intermittent half-cut line with a laser or the like.
The method for forming the convex portion 12 is not particularly limited, and any known method can be employed. However, the surface side of the film can be formed by an embossing method such as pressing from the surface corresponding to the inside of the film. It is preferable from the viewpoint of productivity that the back side corresponding to the inside is depressed and formed.

  The shape of the refill bag of the present invention is not particularly limited, and a pouch such as a three-side seal type or a four-side seal type is suitable, but a standing pouch type bag is particularly easy to handle because it can stand on its own, This is the preferred format.

  As a film forming a refill bag, a flexible single layer resin film can be used, and a laminated resin film is generally used. Any of the commonly used materials can be used, stretched nylon film (ONy), stretched polypropylene (OPP), unstretched polypropylene (CPP), linear low density polyethylene (LLDPE), high density polyethylene (HDPE), Examples thereof include low density polyethylene (LDPE), polyethylene terephthalate (PET), and metal-deposited polyethylene terephthalate (VM-PET). Moreover, in order to give barrier property, you may use metal films, such as aluminum, with said resin film.

  As the layer structure of the laminated resin film, any of the structures usually used for this kind of purpose can be adopted. However, as a preferable layer structure, from the outer layer side, a base material layer made of ONy, PET, etc., and CPP , LLDPE, a structure in which a sealant layer made of LDPE or the like is laminated, and a structure in which OPP, HDPE, VM-PET, a metal film, etc. are further laminated between the base material layer and the sealant layer. it can.

The position of the nozzle portion 10 provided in a part of the refill bag 1 may be the upper edge corner portion (the embodiment of FIG. 1) of the refill bag 1 or the upper edge center portion. Various shapes can be adopted as the shape of the nozzle portion, and the direction thereof can be selected from the upward direction, the obliquely upward direction, and the lateral direction depending on the position to be provided.
Through the shape shown in FIG. 1, that is, a seal portion that extends continuously upward from the top of the side seal portion 6 in a concave arc shape, and a concave bent portion that is recessed inward from the top seal portion 7. The shape of the nozzle formed from the seal portion extending obliquely upward is a particularly preferable shape excellent in handleability at the time of refilling.

  The refill bag of the present invention is used as a bag for storing liquids, granules, powders, etc., such as detergents, surfactants, cosmetics, foods, etc., and is used for transferring contents. .

It is a front view which shows one Example of the refill bag of this invention in the state which accommodated the contents. It is a front view which expands and shows the nozzle part of the bag for refill shown in FIG. It is sectional drawing at the time of cut | disconnecting by the AA line in FIG. It is sectional drawing which shows the opening state at the time of pouring the contents from a spout.

Explanation of symbols

1: Refill bag 2, 3: Body film 4: Bottom film 5: Bottom seal part 6: Side seal part 7: Top seal part 8: Contents storage part 9: Outlet passage 10: Nozzle part 11: Planned cutting line 12: convex portion 13: half-cut line

Claims (4)

A refill bag for sealing and storing contents in a bag body formed by laminating a flexible laminated resin film, having both side seal portions protruding from the bag body and a dispensing flow path The front end region of the nozzle part is provided with a projected line for opening the spout, and is provided with a convex part raised on at least one surface side extending in the direction of the central part of the bag body along the spout flow path, Furthermore, a refill bag comprising at least one half-cut line on at least one surface of the convex portion. The refill bag according to claim 1, wherein the half-cut line is provided so as to extend from a position close to but not in contact with the planned cutting line toward the center of the bag body. The refill bag according to claim 1 or 2, wherein the convex portion is provided so as to intersect with the planned cutting line. The refill bag according to any one of claims 1 to 3, wherein the half-cut line is provided by laser light irradiation.

Images