JPH10119986A - Flexible pouch for opening by poking straw - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a pouch from being easily deformed and applied external pressure due to a grasping force when a straw is poked into a part where an opening is to be made, which is provided on a flexible pouch being soft and lacking shape retention, with the result that a liquid as its contents flies out of the front end of the straw at the instant of the poking of the straw, and soils clothes and so on. SOLUTION: The flexible pouch 1 is provided with a part 2 where an opening is to be made for opening the pouch by poking a straw into it. In the case, near the part where the opening is to be made, a hard grasp member 3 with a straw thrust-in hole 4 which keeps the shape of the vicinity of the part 2 is attached. Thus, without applying pressure to a liquid filled in the pouch 1 it is grasped and fixed in position, and opened by poking the straw.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a flexible pouch, and more particularly to a flexible pouch of a type in which a straw is inserted and an opening is provided to open a straw. The present invention relates to an improved pouch that can reliably prevent the liquid content from scattering from the tip of a straw.

[0002]

2. Description of the Related Art Conventionally, various types of flexible pouches have been known, including, for example, a standing type in which a stand is provided with a wait at the bottom, a pillow type, a four-side seal type, and a three-side seal type. And various types such as gusset type are widely used for simple packaging of many liquids such as soft drinks, emulsions, pastes and the like.

[0003] On the other hand, there are various types of spouts provided in the liquid container. Among them, the simplest in terms of economy and structure is that an aluminum foil or the like easily penetrates into a proper place of the container. It is of a type in which a straw is inserted and a straw is inserted into it, and the liquid content is sucked from the tip of the straw with the mouth to be drunk. Such a spout is relatively kept like a milk pack. It is widely used as a spout provided in highly shaped containers.

The above-mentioned spout of the straw insertion type has been used as a spout provided in a flexible pouch as described above because of its simplicity. However, it has hardly been commercialized recently. The reason is considered as follows. That is, for example, in a container having a relatively high shape retention such as a milk pack, when the container is gripped and fixed from the outside and a straw is inserted into a portion to be opened, external pressure is applied to the container by the gripping, and the inserted straw is inserted. It is unlikely that the content liquid will jump out of the tip of the container.However, in the case of a flexible pouch in which the container itself is flexible and lacks shape retention, when the pouch is gripped and fixed and a straw is inserted into the opening to be opened, This is probably because the pouch is easily deformed by the gripping force and the internal pressure is increased, so that as soon as the straw is inserted, the content liquid jumps out from the tip of the straw and soils the clothes.

However, the flexible pouch is
As a simple packaging container, it is very effective in terms of economy and simplicity of handling compared to bottle type containers,
It is considered to be extremely effective to put such a simple packaging container into practical use in a packaging form in which an extremely simple and economical straw insertion opening type opening structure is combined. For this purpose, it is necessary to devise some means so as not to cause the above-mentioned contents to pop out when the straw is inserted and opened.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and its purpose is to provide a flexible pouch which is flexible and lacks shape retention.
When the straw is inserted into the expected opening portion provided in the pouch, the pouch is easily deformed by the gripping force and external pressure is applied, and as soon as the straw is inserted, the content liquid jumps out from the tip of the straw, and the clothes, etc. It is an object of the present invention to provide a straw pouch-opening type flexible pouch which does not cause a problem such as soiling.

[0007]

Means for Solving the Problems A flexible pouch according to the present invention which can solve the above-mentioned problems is a flexible pouch provided with an opening to be inserted by inserting a straw, in the vicinity of the opening to be opened. Is characterized in that a hard gripping member with a straw through-hole for holding the configuration around the opening opening is attached.

The hard gripping member can be provided on the outer surface of the flexible pouch in the vicinity of the predetermined opening portion, but it makes it easier to insert the straw into the opening and makes the appearance of the flexible pouch uncomfortable. In order not to give it, it is preferable to join the hard gripping portion to the inner surface side of the pouch. In this case, as a material of the flexible pouch, use a flexible film including a heat-sealable resin layer as the innermost layer, and If the above-mentioned hard gripping member is fixed to the inner surface side of the scheduled portion by heat fusion, the hard gripping member can be easily joined and fixed without worrying about the dissolution of the adhesive into the filled soft drink or the like. It is preferable because it is possible.

The shape and structure of the hard gripping member are not particularly limited as long as it has a function of holding the shape of the pouch around the planned opening portion. The most practical in this respect is a structure in which a straw through-hole is provided at a position corresponding to the expected opening portion of a rectangular plate or a disk. In some cases, the plate-like hard gripping member is It is also possible to expand to the front in the width direction to make it easier to hold by hand. The opening portion provided in the flexible pouch of the present invention preferably has a film configuration including only a sealant layer or an Al foil as a component layer so that a straw can be inserted and opened more easily.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, the present invention is not limited to the illustrated examples, but can be adapted to the above and subsequent points. The present invention can be implemented with appropriate modifications within the scope, and all of them are included in the technical scope of the present invention.

FIG. 1 is a perspective view exemplifying a basic structure of a flexible pouch for a straw insertion opening according to the present invention, and FIG. 2 is an explanatory sectional view of a main part showing a structure near a planned opening portion of the straw insertion opening. An embodiment in which the present invention is applied to a general standing pouch is shown. In the figure, reference numeral 1 denotes a standing pouch main body, which is formed in a bag shape with an arbitrary flexible film, and is configured so that a stand 1a is provided at the bottom thereof so that it can be set up with the contents filled therein. ing. An opening portion 2 that can be opened by inserting a straw is provided at an appropriate position above the opening portion.
A rectangular hard gripping member 3 having a function of holding the surrounding shape is fixedly joined to the inner surface side of the member, and this gripping member 3 is gripped by hand from both sides as shown by arrows in FIG. 1, for example. The pouch 1 can be gripped and fixed without applying external pressure to the pouch 1. A straw through hole 4 having a size slightly larger than the planned opening portion is provided at a position corresponding to the planned opening portion 2 of the gripping member 3,
When the straw is inserted through the opening portion 2 as shown by an arrow in FIG.
Can be inserted into the interior of the pouch.

At this time, in the known flexible pouch for straw insertion and opening which has been put to practical use, the hard gripping member 3 as shown in FIGS. 1 and 2 is not provided. For example, the body portion is gripped and fixed in the direction indicated by the white arrow in FIG.
With a straw inserted. As a result, an external pressure is applied to the filling liquid inside by the gripping of the body, and the filling liquid jumps out from the rear end of the straw opened to the atmosphere as soon as the straw is inserted and the scheduled opening part 2 is opened. There is a danger of soiling the clothes and the like, and this has hindered the general use of straw-insertable and open-type flexible pouches.

However, if a hard gripping member 3 as shown in FIGS. 1 and 2 is provided, a straw can be inserted into the opening portion 2 in a state where the gripping member 3 is gripped and fixed from both sides. Since no external pressure is applied to the filling liquid in 1, the filling liquid does not jump out from the rear end as soon as the straw is inserted as described above.

As described above, according to the present invention, when the straw is inserted and the opening portion 2 is opened, the shape around the opening portion 2 is held without applying external pressure to the filling liquid in the pouch. It has a feature in that it can be fixed. The shape, structure, mounting position, etc. of the gripping member 3 are not limited at all as long as such a function can be effectively exerted. It is possible.

3 (A) to 3 (F) are explanatory views illustrating various modifications of the gripping member 3. In each of the drawings, the opening scheduled portion 2 of the pouch is located just above the straw through hole 4. FIG. Will do. Then, the straw is inserted and opened in a state where it is gripped and fixed from the direction of the outlined arrow in each figure. FIGS. 3A and 3B show a gripping member 3 formed of a rectangular or square hard plate, and a straw through hole 4 is provided at the center thereof. FIG. 3C shows the gripping member 3 provided with a straw through hole 4 at the center of the disk. In such an example, the gripping member 3 can be gripped and fixed from any direction. FIG. 3 (D) shows a modification in which the gripping portion side of the rectangular plate material is processed in a plane to facilitate gripping and fixing. The shape of the through hole 4 is most generally circular, but is not limited to this, and may be elliptical, polygonal, rectangular, or the like.

3 (E) and 3 (F) show an example in which a part of the straw through hole 4 is opened to form a bay-like through hole 4. The through hole 4 in the present invention is defined as: Such a partially open bay shape is also included in the category. When these gripping members 3 are used, they can be gripped and fixed by sandwiching the gripping members 3 from the thickness direction as shown in the figure. For example, as shown in FIG. In a state where the gripping member 3 is fixed and the gripping member 3 is sandwiched and fixed from both sides, a straw may be inserted in the direction of the arrow to open. In this case, as shown in FIG. 3 (G), it is of course possible to replace the bay-shaped through-hole 4 with an unopened through-hole 4 in the same manner as in the above example. The hard gripping member 3 may be provided on a part of the pouch 1 including the portion to be opened as described above, or may be provided in an enlarged manner on the front surface including the portion to be opened, and may be gripped by hand. Can be further facilitated.

FIGS. 5A and 5B show an example in which the gripping member 3 is three-dimensionally structured to facilitate gripping and fixing. If necessary, the gripping member 3 having such a three-dimensional structure may be used. However, not only is the production cost of the gripping member 3 high, but also the joining to the pouch becomes complicated,
The gripping member 3 having a plate-like structure as shown in FIGS. 3A to 3G is more practical.

FIG. 6 shows an embodiment in which the shape of the pouch 1 itself is devised so that the gripping by the gripping member 3 is further facilitated. By doing so, the gripping position is clarified from the shape surface, and the gripping and fixing can be performed easily and reliably. As described above, by devising the shape of the gripping member mounting position on the pouch 1,
Of course, it is also possible to facilitate the holding and fixing, and the specific shape and the like for that purpose are not limited to the example of FIG.

The constituent material of the pouch according to the present invention is not particularly limited, and all known flexible films including a single-layer film and a laminated film can be used, but at least the innermost side has a polyethylene-based material having heat sealability. It is desirable to be made of the above resin and to enable sealing after bag making and beverage filling, and furthermore, to allow thermal fusion of the gripping member as described later. A typical example of a laminated film is a six-layer structure including a base film / printing layer / adhesive (or adhesive resin) layer / Al foil / adhesive (or adhesive resin) layer / sealant layer from the outer surface side (see the figure below). 7) or a four-layer structure composed of a base film / printing layer / adhesive (or adhesive resin) layer / sealant layer (see FIG. 8 described later).

Preferred base films constituting the laminated film include synthetic resins (usually uniaxially or biaxially stretched) such as polyester resins, polyamide resins, and polyolefin resins, as well as nonwoven fabrics, papers, and the like. Cellophane and the like can be mentioned, and as the adhesive (or adhesive resin), an ordinary adhesive for extrusion lamination or an adhesive resin used in the production of a multilayer film may be used. As a preferable material of the sealant layer, polyethylene (LD)
-PE, LLD-PE, etc.) and polypropylene.

The constituent material of the hard gripping member used in the present invention is not particularly limited. However, since the present invention is mainly used as a filling container for soft drinks and other drinks, it does not adversely affect the drink. It is preferable to select a synthetic resin, and as described above, in order to be able to bond and fix the inner surface of the pouch 1 by a heat fusion method without using a solvent-based adhesive, a polyethylene having a heat fusion property itself is used. It is desirable that the innermost layer be made of a resin, and the innermost layer be joined and fixed to the inner surface of the pouch 1 made of heat-sealing polyethylene or the like by heat fusion.

It is desirable that the opening to be provided in the pouch of the present invention has a strength that can be relatively easily opened by inserting a straw compared with the pouch main body. 7 and 8 (in the figures,
A is a base layer, B is a printed layer, C is an adhesive (or adhesive resin) layer, D is a sealant layer, and E is an aluminum layer. It is desirable to pre-drill the openings to leave only the relatively low-strength Al foil and sealant layer so that the openings can be easily inserted by using a straw. In this case, the strength of the opening is naturally small, but the area is very small, so that there is no danger that the opening will be broken during normal storage / transportation to cause liquid leakage. If the base film layer is perforated in advance as shown in FIGS. 7 and 8, there is a concern that dust and the like may enter and adhere to the holes during storage, transport, and display, thereby impairing hygiene. For example, as shown by a broken line in FIG. 8, if the outer surface side is sealed with a label F or the like which can be easily peeled, such a concern is solved.

In some cases, it is also possible to produce a laminated body constituting the portion to be opened separately from the laminated film constituting the flexible pouch body, and to join the laminated body to the pouch body.

In the above description, a case where the present invention is applied to a standing pouch is described as a typical example of a flexible pouch. However, the present invention is not necessarily limited to the application to a standing pouch. If a flexible pouch is made of a flexible film in which an external pressure is applied to the filling liquid by gripping and the filling liquid jumps out at the time of opening with a straw, all types such as pillow type, four-side seal type, three-side seal type, gusset type, etc. It can be applied to flexible pouches having the shape and structure described above.

[0025]

The present invention is configured as described above. In particular, by attaching a gripping member, it is possible to surely prevent the filling liquid from escaping from the insertion opening of the straw, which has been an obstacle to general use. Therefore, the combination of a flexible pouch, which is extremely promising as a simple packaging container in terms of economy and ease of handling, and an opening structure of a very simple and economical straw insertion type, can be generalized on a practical scale. became.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a flexible pouch for a straw insertion opening according to the present invention.

FIG. 2 is a partially sectional explanatory view showing a situation where a straw is inserted and opened.

FIG. 3 is a sketch showing some examples of a rigid gripping member used in the present invention.

FIG. 4 is a partial perspective view illustrating another attachment position of the gripping member to the pouch.

FIG. 5 is a perspective view illustrating a hard gripping member having a three-dimensional structure.

FIG. 6 is an explanatory view showing an example in which the shape of the pouch is devised so that the gripping member can be more easily gripped.

FIG. 7 is a partially enlarged cross-sectional view illustrating a preferred laminated structure of a laminated film and a planned opening portion constituting the pouch.

FIG. 8 is a partially enlarged cross-sectional view illustrating another preferred laminated structure of the laminated film and the scheduled opening portion constituting the pouch.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Flexible pouch 2 Expected opening part 3 Hard gripping member 4 Straw through hole A Base layer B Printing layer C Adhesive (or adhesive resin) layer D Sealant layer E Aluminum foil F Label

Claims (5)

[Claims] 1. A flexible pouch provided with a planned opening portion through which a straw is inserted to open the straw, near the planned opening portion, a hard gripping member with a straw through-hole for retaining a shape around the planned opening portion. A flexible pouch for a straw insertion opening, characterized by being fitted with a straw. 2. The pouch according to claim 1, wherein the hard gripping member is joined to an inner surface of a flexible pouch. 3. The pouch according to claim 2, wherein the flexible pouch is made of a flexible film including a heat-sealable resin layer as an innermost layer, and the hard gripping member is heat-sealed to an inner surface of the planned opening. . 4. The pouch according to claim 1, wherein the hard gripping member is provided with a straw through-hole at a position corresponding to the planned opening portion of a rectangular plate or a circular plate. 5. The pouch according to claim 1, wherein the opening portion includes only a sealant layer or an Al foil as a constituent layer.