JP2003072779A - Pouch vessel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pouch vessel capable of holding a mouth part in an open condition or in a close condition. SOLUTION: The pouch vessel comprises a bag body 10 formed of a pair of face and back exterior sheets 11 and a gusset sheet which is folded inwardly from a lower part of the exterior sheets 11, and a mouth part opening/closing member 20 which is heat-bonded to an inner surface of the mouth part of the bag body 10. The mouth part opening/closing member 20 has a pair of resin frames 21 which are elastically deformed so that a center part in the longitudinal direction is curved outwardly with both ends thereof connected to each other via a hinge 25. The deformed condition of the resin frames 21 elastically deformed by engaging a claw part formed on a shaft 26 which is a component of the hinge 25 with an engagement groove formed in an inner circumferential surface of a bearing part 27 which is a component of the hinge 25 can be maintained, and the mouth part of the pouch vessel 1 can be kept in the open condition.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pouch container capable of holding the mouth of a bag body in an open state and a closed state, respectively.

[0002]

2. Description of the Related Art As a pouch container for packaging foods such as snacks, there is one as shown in FIG. 11 (a). The pouch container 50 is composed of a pair of front and back exterior sheets 51 and a gusset sheet 52 that is folded inward from the lower portions of both exterior sheets 51 to form a bottom gusset portion, and the inner peripheral edge of the folded gusset sheet 52. Is heat-sealed to the inner surface of the exterior sheet 51, and the upper edge and both side edges of the inner surface of the exterior sheet 51 are heat-sealed to each other to form a bag shape.

The flexible sheet forming the exterior sheet 51 is easily rupturable in the lateral direction (width direction of the bag body), so that the gusset sheet 51 does not come into contact with the heat-sealed portion at the upper edge. By breaking the upper end of the pouch container 50 from the notches 51a formed in the upper side edges of the pouch container 5 as shown in FIG.
0 can be opened.

[0004]

However, since the exterior sheet 51 and the like forming the pouch container 50 are usually formed of a thin plastic film, the contents contained in such a pouch container 50. Even if the mouth formed by breaking the upper end of the pouch container 50 is opened for taking out the pouch, the pouch container immediately returns to its original flat state. Therefore, every time the contents are taken out from the opened pouch container 50, the mouth of the pouch container 50 has to be opened each time, and there is a problem that the usability is poor.

Further, since the mouth portion of the pouch container 50 that has been once opened is halfway open, when the contents remain in the pouch container 50, as shown in FIG. The upper end of the broken pouch container 50 must be folded back and the resealable seal S or the like must be attached to close the mouth, which also causes a problem of poor usability. is there.

Therefore, an object of the present invention is to provide a pouch container capable of holding the mouth portion in the open state and the closed state, respectively.

[0007]

In order to solve the above problems, the invention according to claim 1 is provided with a mouth opening / closing member for holding the mouth of the bag body in an open state and a closed state, respectively. The mouth opening / closing member is fixed to an inner surface or an outer surface of the mouth portion of the bag body, and has a pair of elastically deformable flat resin frames whose both ends are connected to each other via a hinge, and a pair of And a holding mechanism capable of holding the resin frame in a state where its central portion in the longitudinal direction is curved outward and releasing the deformed holding state of the resin frame. .

As described above, in this pouch container, both ends of the pair of elastically deformable resin frames fixed to the inner surface or the outer surface of the mouth portion of the bag body are connected to each other through the hinges. When both ends of the resin frame are pressed inward, the longitudinal center of the resin frame bends outward and the mouth of the bag body opens easily. Since it is held in the open state, the mouth portion of the bag body is held in the open state. As a result, unlike the conventional pouch container, it is not necessary to open the mouth each time the content is taken out, and the contents contained in the pouch container can be taken out continuously.

Further, when the holding of the shape of the resin frame by the holding mechanism is released, the elastically deformed resin frame is restored to the original flat state, so that the pair of resin frames come close to each other, and the mouth of the bag body is closed. The part is naturally closed. Therefore, even when the contents remain in the pouch container, it is possible to perform the troublesome closing work of the mouth part such as folding the opened mouth part and pasting the resealing seal, as in the conventional pouch container. There is no need to do it, improving usability.

In order to solve the above-mentioned problems, the invention according to claim 2 is provided with a mouth opening / closing member for holding the mouth of the bag body in an open state and a closed state, respectively. Is a pair of elastically deformable resin frames that are fixed to the inner surface or the outer surface of the mouth portion of the bag body and are formed such that the central portion in the longitudinal direction is curved outward in advance, and the pair of resin frames are flat. Provided is a pouch container having a holding mechanism capable of holding the inner surfaces of the resin frame in a state of being brought close to each other and elastically deforming the resin frame to release the deformed holding state of the resin frame. To do.

As described above, in this pouch container, a pair of elastically deformable resin frames formed so that the central portion in the longitudinal direction is curved outward in advance are fixed to the inner or outer surface of the mouth of the bag body. Therefore, the mouth of the bag body is held in an open state by the curved resin frame. Therefore, unlike the conventional pouch container, it is not necessary to open the mouth each time the contents are taken out, and the contents contained in the pouch container can be taken out continuously.

When the curved resin frame is elastically deformed to a flat state and the inner surfaces of the resin frames are held in close proximity to each other by the holding mechanism, the mouth of the bag body is kept closed. Therefore, even if the contents remain in the pouch container, it is necessary to fold the opened mouth part and attach a re-seal seal etc. like a conventional pouch container to close the mouth part. There is no need to perform work and usability is improved.

Further, when the resin frame is not deformed and held by the holding mechanism, the resin frame elastically deformed to the flat state is restored to the original curved state.
The mouth of the bag body can be easily opened.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments will be described below with reference to the drawings. As shown in FIGS. 1 (a) and 1 (b),
This pouch container 1 is a flexible structure in which a single-layer film such as a polyester film or a gas barrier sheet such as an aluminum foil is laminated on the outer surface of a synthetic resin film having a heat-adhesive property such as polyethylene or polypropylene, and is flexible. The bag main body 10 is formed of a sheet, and the mouth opening / closing member 20 is heat-welded to the inner surface of the mouth of the bag body 10 and is formed of a resin that can be heat-bonded to the inner surface of the flexible sheet. .

As shown in FIGS. 2 (a) and 2 (b), the bag body 10 has a pair of front and back exterior sheets 11 and a gusset sheet that is folded inward from the lower portions of both exterior sheets 11 to form a bottom gusset portion. The inner peripheral edge of the folded gusset sheet 12 is heat-sealed to the inner surface of the outer sheet 11, and the upper surface of the outer sheet 11 is The edge portion and both side edge portions are heat-sealed to each other to form a bag shape. The gusset sheet 12 whose inner surface is heat-sealed to the exterior sheet 11 has both edges fixed on the outer surface.

The flexible sheet forming the exterior sheet 11 has easy breakability in the lateral direction (width direction of the bag body 10), and the bag body 10 is prevented from contacting the heat-sealed portion at the upper edge. Notch 1 formed on both upper edges of the
The pouch container 1 can be opened by breaking the upper end of the bag body 10 from 0a.

The mouth opening / closing member 20 is made of polyethylene resin, polypropylene resin, or the like, as shown in FIG.
As shown in (b), it is provided with a pair of resin frames 21 whose both ends are connected to each other via a hinge 25 and which are elastically deformed so that the central portion in the longitudinal direction is curved outward.
As shown in FIGS. 4A to 4D, this resin frame 2
A shaft 26, which is a component of the hinge 25, is provided on one end side of 1.
Bearing portions 27, which are constituent elements of the hinge 25, into which the shaft portion 26 is fitted are integrally formed on the other end side.

The resin frame 21 is shown in FIG.
As shown in (c), it is composed of a thick portion 22 formed in the central portion in the width direction, and thin portions 23 protruding vertically from the upper edge and the lower edge of the thick portion 22, respectively.
The outer surface of the thin portion 23 is heat-welded to the inner surface of the mouth of the bag body 10.

Further, a convex portion 24a and a hole 24b are formed on the inner surface of the thick portion 22 of each resin frame 21, and the convex portion 24a of one resin frame 21 corresponds to the other resin frame 21. In the hole 24b, the protrusion 24a of the other resin frame 21 is provided on the one resin frame 2
The inner surfaces of the thick portions 22 of the pair of resin frames 21 are held in close proximity to each other by being press-fitted into the one holes 24b.

A shaft 26 which is a component of the hinge 25
As shown in FIG. 5 (a), has a claw portion 26a protruding outward from its peripheral surface, and the inner peripheral surface of the bearing portion 27, which is a constituent element of the hinge 25, is shown in FIG. As shown in b), engaging grooves 27a and 27b with which the claw portion 26a engages are formed, respectively. Between the engagement groove 27a and the engagement groove 27b on the inner peripheral surface of the bearing portion 27, the shaft 26 fitted in the bearing portion 27 rotates to rotate the engagement groove 2
In order to allow the claw portion 26a to move smoothly from 7a to the engaging groove 27b, it is formed into a curved surface whose inner diameter gradually changes.

The thick portion 2 of the pair of resin frames 21
In the state where the inner surfaces of the two are close to each other, as shown in FIG. 6, the claw portions 26a of the shaft portion 26 are fitted into the bearing portion 27 by engaging one of the engaging grooves 27a of the bearing portion 27. The shaft 26 does not fall off from the bearing portion 27, and when the longitudinal center portions of the pair of resin frames 21 are respectively curved outward, as shown in FIG. 7, the claw portions 26a of the shaft 26 are provided. By engaging with the other engaging groove 27b, the deformed state of the curved resin frame 21 is maintained.

As described above, in the pouch container 1, since the mouth opening / closing member 20 is heat-welded to the inner surface of the mouth of the bag body 10, the bag body 1 is hermetically sealed with the contents stored therein.
After opening the bag body 10 by breaking the upper edge portion of 0 from the notch 10a, the convex portion 24a formed on the resin frame 21 is removed from the hole 24b, and is shown by an arrow in FIG. 8 (a). When both ends of the resin frame 21 are pressed inward with each other, the central portion of the resin frame 21 in the longitudinal direction is curved outward as shown in FIG.
The opening of 0 is easily opened, and the claw portion 26a of the shaft 26 constituting the hinge 25 is engaged with the engaging groove 27b of the bearing portion 27 (see FIG. 7), so that the curved resin frame 2 is formed.
Since 1 is held in that state, the mouth of the bag body 10 is held in an open state, as shown in FIG. 1 (b). Therefore, unlike the conventional pouch container, it is not necessary to open the mouth each time the contents are taken out, and the contents contained in the pouch container 1 can be taken out continuously.

When the contents remain in the opened pouch container 1, the resin frame 21 whose central portion in the longitudinal direction is curved outward as shown by the arrow in FIG. 8 (b). When they are pressed inward, the claw portions 26a of the shaft 26 are disengaged from the engagement grooves 27b of the bearing portion 27 (see FIG. 6), and the elastically deformed resin frame 21 returns to its original flat state. Convex portion 24a formed on the frame 21
By press-fitting into the hole 24b, the mouth portion of the opened pouch container 1 can be easily closed as shown in FIG. 8 (a). Therefore, like a conventional pouch container,
It is easy to use because it is not necessary to fold the opened mouth and attach a re-sealing sticker to close the mouth.

In this pouch container 1, the convex portions 24a and the holes 24b that are fitted to each other are formed in the resin frame 21, but in a flat state, the inner surfaces of the resin frame 21 are close to each other, and Since the mouth of the main body 10 is closed, the protrusion 24a and the hole 24b are not necessarily provided.

Further, in this pouch container 1, the hinge 25 connecting the both ends of the pair of resin frames 21 to each other is engaged with the shaft 26 having the claw portion 26a and the engaging groove 27a with which the claw portion 26a is engaged. However, the present invention is not limited to this, and if the mouth of the bag body 10 can be held in an open state, that is, the length of the pair of resin frames 21. If you can keep the central part of the direction curved outward,
It is also possible to adopt another configuration (holding mechanism). However, it goes without saying that even if another holding mechanism is adopted, it is necessary to be able to release the state in which the longitudinal center portions of the pair of resin frames 21 are curved outward. .

9 and 10 show another embodiment. Since this pouch container 2 also basically has the same configuration as the pouch container 1 described above, the same components are designated by the same reference numerals, and the description thereof will be omitted. The opening / closing member 30 will be described in detail.

The mouth opening / closing member 20 used in the above-mentioned pouch container 1 has a pair of resin frames 21 formed in a flat state in advance, and both ends thereof are connected to each other via hinges 25. However, in the mouth opening / closing member 30 used in this pouch container 2, as shown in FIG. 9, a pair of elastically deformable resin frames 31 preliminarily bend the central portion in the longitudinal direction outward. The opening / closing member 20 is significantly different from the mouth opening / closing member 20 in that it is formed in a closed state and both ends thereof are not connected to each other. The resin frame 31 is composed of a thick wall portion 32 and a thin wall portion 33. The outer surface of the thin wall portion 33 is heat-welded to the inner wall surface of the mouth of the bag body 10. It is the same.

Therefore, in this pouch container 2, as shown in FIG.
As shown in (a), a pair of curved resin frames 31
Due to this, the mouth of the bag body 10 is always opened, and in order to close the mouth of the bag body 10, as shown by the arrow in the figure, the center of the curved resin frame 31 in the longitudinal direction is indicated. By pressing the part, it is elastically deformed to a flat state,
The resin frame 31 elastically deformed in a flat state may be held in the deformed state by press-fitting the convex portions 34a formed in both resin frames 31 into the holes 34b formed in the other resin frame 31. As a result, the inner surfaces of the resin frame 31 elastically deformed into a flat state (the inner surfaces of the thick portion 32) are held in close proximity to each other, and the mouth portion of the bag body 10 is closed as shown in FIG. Is kept in the specified state. In addition, in a sealed state in which the contents are contained in the bag body 10 before opening, the pair of resin frames 31 are held in a flat state in which they are elastically deformed.

The pouch container 2 configured as described above is
After the bag main body 10 is opened by breaking the upper edge portion of the bag main body 10 which is sealed in the state where the contents are contained, from the notch (not shown), the convex portion 34a formed on the resin frame 31 is removed. When removed from the hole 34b, as shown in FIG. 10 (a), the elastically deformed resin frame 21 returns to its original curved state, and the mouth of the bag body 10 is held in an open state. Objects can be taken out continuously.

When the contents remain in the bag body 10, as described above, the pair of resin frames 31 are elastically deformed to a flat state so that the resin frames 31 of both sides are deformed.
By pressing the convex portion 34a formed on the other side into the hole 34b formed in the other resin frame 31, the bag body 10
It is possible to easily close the mouth portion of the (see FIG. 10 (b)).

Although the pouch container 2 uses the mouth opening / closing member 30 in which both ends of the pair of resin frames 31 are not connected to each other, the present invention is not limited to this, and the pair of resin frames 31 is not limited to this. It is also possible to use a mouth opening / closing member in which both ends of the resin frame are connected to each other through a thin piece.

In each of the above embodiments, the bag body 1
The mouth opening / closing members 20, 30 are heat-welded to the inner surface of the mouth of No. 0, but the invention is not limited to this, and the mouth opening / closing members 20, 30 may be fixed to the outer surface of the mouth of the bag body 10. It is possible. When the mouth opening / closing member 20 is fixed to the outer surface of the mouth of the bag body 10, it is not necessary to provide the convex portion 24a and the hole 24b, and the hinge 25 portion is located outside the bag body 10 in the width direction. It is necessary to set the frame length. On the other hand, when the mouth opening / closing member 30 is fixed to the outer surface of the mouth of the bag body 10, the protrusions 34a provided on the resin frame 31 can be press-fitted into the holes 34b at corresponding positions of the bag body 10. It is necessary to form a hole in.

Further, each of the above-described embodiments is a bottom gusset type self-standing pouch container, but the present invention is not limited to this, and the present invention is also applicable to a pouch container in which the bag body is an ordinary flat bag. Can be applied.

Further, the above-described embodiment is a pouch container of the type that is opened by breaking the upper end of the bag body, but the present invention is not limited to this, and the mouth is opened beforehand, The present invention can be applied to a pouch container whose mouth is opened and closed by a mouth opening / closing member.

In the above embodiment, the case where the mouth opening / closing member is heat-welded to the bag body has been described, but the present invention is not limited to this, and the mouth opening / closing member is bonded to the bag body with an adhesive or the like. It may be one that does.

[Brief description of drawings]

FIG. 1 (a) is a perspective view showing an embodiment of a pouch container according to the present invention, and FIG. 1 (b) is a perspective view showing a usage state of the above pouch container.

FIG. 2 (a) is a plan view showing a state in which the above pouch container is folded flat, and FIG. 2 (b) is a plan view showing a state in which one exterior sheet of the above pouch container is removed.

FIG. 3 (a) is a plan view showing a mouth opening / closing member used in the above pouch container, and FIG. 3 (b) is a side view showing the mouth opening / closing member in the same.

FIG. 4 (a) is a side view showing a resin frame constituting the opening / closing member of the same, FIG. 4 (b) is a plan view showing the resin frame of the same, and (c) and (d) are the same as above. It is a figure which shows the structural element of the hinge which has connected the resin frame.

FIG. 5A is an enlarged view showing a shape of a shaft forming the hinge of the same, and FIG. 5B is an enlarged view showing a shape of a bearing portion forming the hinge of the same.

FIG. 6 is an enlarged view showing a relationship between a shaft and a bearing portion that constitute the above-mentioned hinge.

FIG. 7 is an enlarged view showing a relationship between a shaft and a bearing portion that constitute the above hinge.

FIG. 8 (a) is a diagram showing a state in which the mouth portion of the above pouch container is closed, and FIG. 8 (b) is a diagram showing a state in which the mouth portion of the above pouch container is opened.

FIG. 9 (a) is a side view showing a resin frame constituting a mouth opening / closing member used in a pouch container according to another embodiment, and FIG. 9 (b) is a plan view showing the resin frame of the same. is there.

FIG. 10A is a diagram showing a state in which the mouth portion of the pouch container is opened, and FIG. 10B is a diagram showing a state in which the mouth portion of the pouch container is closed.

FIG. 11A is a perspective view showing an embodiment of a conventional pouch container, and FIG. 11B is a perspective view showing a usage state of the above pouch container.

FIG. 12 is a perspective view showing another usage state of the above pouch container.

[Explanation of symbols]

1, 2 pouch container 10 bag body 10a cut 11 Exterior sheet 12 gusset sheets 20 mouth opening / closing member 21 resin frame 24a convex part 24b hole 25 hinges 26 axes 26a Claw (holding mechanism) 27 Bearing 27a, 27b Engaging groove (holding mechanism) 30 mouth opening / closing member 31 resin frame 34a Convex part (holding mechanism) 34b hole (holding mechanism)

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Kaoru Takeo             5-3-18 Imazukita, Tsurumi-ku, Osaka             Company Fuji Seal F-term (reference) 3E064 EA30 HN11 HN70

Claims (2)

[Claims] 1. A mouth opening / closing member for holding the mouth of the bag body in an open state and a closed state, respectively, wherein the mouth opening / closing member is fixed to an inner surface or an outer surface of the mouth of the bag body. , A pair of elastically deformable flat resin frames whose both ends are connected to each other via a hinge, and a pair of the resin frames are held with their central portions in the longitudinal direction being curved outward. A pouch container having a holding mechanism capable of releasing the deformed holding state of the resin frame. 2. A mouth opening / closing member for holding the mouth portion of the bag body in an open state and a closed state, respectively, wherein the mouth portion opening / closing member is fixed to an inner surface or an outer surface of the mouth portion of the bag body. , A pair of elastically deformable resin frames formed so that the central portion in the longitudinal direction is curved outward in advance, and inner surfaces of the resin frames when elastically deforming the pair of resin frames into a flat state And a holding mechanism capable of canceling the deformed holding state of the resin frame.