JP5588698B2 - Bag body with spout - Google Patents

Description

  The present invention relates to a bag body having a spout that can be easily resealed (reclosed).

  When removing the required amount of contents from the bag body and storing the remaining part, it is inconvenient for the user to prepare a rubber band etc. to tie the opening with a rubber band or string, etc. There is known a packaging bag in which a cap, a zipper or the like can be provided to reclose the opening.

  For example, Patent Document 1 discloses that a spout main body including an outer cylindrical portion positioned outside the pouch and an adhesive portion fixed to the inner surface of the pouch, a sealing material that seals an opening of the outer cylindrical portion, and an outer cylindrical portion are attached. There is described a pressure-resistant heat-resistant packaging body with a spout in which an inner mounting portion of a spout assembly composed of a cap is sandwiched between a marginal portion or a corner portion of a pouch body.

Further, in Patent Document 2, a spout (pouring nozzle) protruding outward is provided at one corner of a bag-like container for storing liquid detergent, shampoo, etc., and a predetermined shape is formed on the inner surface of the bottom end of the spout. A bag-like container with a pouring function is described in which a plastic wire having a retaining property is heat-sealed so that its length direction is parallel to the width direction of the spout.
As a plastic material having a shape-retaining property, for example, one manufactured from a polyolefin through a process including rolling and stretching is known (see, for example, Patent Documents 3 to 5).

JP-A-10-175650 JP 2006-306405 A Japanese Patent No. 3582854 Japanese Patent No. 3735191 Japanese Patent No. 3942730

  However, in the case of the invention described in Patent Document 1, since it is necessary to rotate the cap while holding the container body and the cap in separate hands in order to close the opening, it takes time, for example when one hand is blocked or In some cases, it may be difficult to tighten the cap, such as when a small cap cannot be securely grasped. In addition, since the cap is separated from the container body, there is a risk of loss after opening.

  As described in Patent Documents 3 to 5, the plastic wire having shape-retaining property increases the tensile strength in the stretching direction by a process including rolling and stretching, and facilitates bending from the stretching direction to the orthogonal direction ( In particular, see paragraphs 0008 to 0019 of Patent Document 3 and paragraph 0026 of Patent Document 5.

  In the case of the invention described in Patent Document 2, the plastic wire thermally fused to the inner surface of the spout does not separate from the bag body, but in order to maintain the shape in which the flow path of the spout is enlarged in a round shape at the time of pouring, As described in Paragraph 0014 and Paragraph 0016 of Document 2, it is possible to bend in the direction shown in FIG. 3 of Patent Document 2 by making the length direction of the plastic wire parallel to the width direction of the spout. There is a need. For this reason, even when the spout is simply resealed, it will be folded in the middle in the length direction of the plastic wire, so that a broken line that crosses the flow path cannot be formed, and the spout is closed. Hateful.

  In addition, in the invention described in Patent Document 2, in the case of a highly fluid content such as a liquid, pouring is easy even if the length direction of the plastic wire is arranged in parallel with the width direction of the spout. However, in the case of contents with low fluidity such as powders (powder or granules) or viscous bodies, the catching of the contents is poor due to bridging (coupling of powders) And the accumulation of contents inside the spout may cause difficulty in pouring. In addition, when first pouring out, forgetting to work in advance to enlarge the flow path of the spout in a round shape, there is a problem that it is difficult to pour out because the flow path is closed.

  The present invention has been made in view of the above circumstances, and provides a bag body having a spout capable of easily and easily resealing a spout by forming a broken line across a flow path. Let it be an issue.

In order to solve the above-described problems, the present invention is a bag body having a barrel portion for containing contents at the lower portion and spouts formed at both sides of the flow path by sealing or folding the film at the upper portion. Te, the watch in the outlet, deforms when an external force is applied, and the first shape-retaining member provided to retain the deformed shape constructed from a plastic material capable, the first shape The holding member is provided such that its longitudinal direction is provided along the flow direction of the flow path, and the width of the flow path is the flow of the flow path at least in a portion of the spout that is parallel to the first shape holding member. A second shape-retaining member that is made narrower as it goes to the tip along the direction , and that is deformed when an external force is applied to the body and that is made of a plastic material that can hold the deformed shape. But up and down Providing a bag body, characterized in that attached to the direction.

In the bag of the present invention, the plastic material is preferably a stretched polyolefin.
The first shape holding member is preferably sealed on the inner surface of the film constituting the spout.
It is preferable that the content is a powder, a granule, or a viscous body.

  According to the present invention, even when a content, such as a powder, a granule, or a viscous body, is low in fluidity and is likely to be poorly poured out due to blocking, the content is caught by the shape holding member. It is difficult to secure the pouring property, and it is possible to realize a simple and easy re-sealing of the spout by forming a fold line across the flow path by folding it in the middle in the length direction of the shape holding member.

It is a top view which shows the bag body which concerns on the 1st form example of this invention. It is sectional drawing which follows the SS line | wire of FIG. It is a top view which shows an example of the state which opened the bag body of FIG. It is a top view explaining the method of resealing the spout of the bag of FIG. It is a top view explaining the method to reduce the volume of the spout and trunk of the bag of FIG. It is a top view which shows the bag body which concerns on the 2nd form example of this invention. It is a top view which shows an example of the state which opened the bag body of FIG. It is a top view explaining the method of resealing the spout of the bag of FIG.

The present invention will be described below based on preferred embodiments with reference to the drawings.
1 to 5 show a bag 6 according to a first embodiment of the present invention and a usage pattern thereof.
The bag body 6 is a flat bag composed of two body films 1 and 1 having the same planar shape. The two body films 1, 1 contain the contents in a body part surrounded by a pair of side edge seal parts 1 a, 1 b formed on both side edges of the bag 6 and a bottom seal part 1 c at the bottom. can do. In addition, a spout 2 having a flow path 3 facing obliquely upward of the bag body 6 is provided in the upper portion of the bag body 6 (specifically, one corner on the upper side).
The flat bag of this embodiment is a triangular bag with a spout having a triangular shape, but the entire bag body may have a triangular shape.

  In the case of this embodiment, both side portions 3a and 3b of the flow channel 3 are flow channel forming seal portions 3a and 3b formed by sealing the body film 1 and 1, respectively. One flow path forming seal portion 3a is formed obliquely with respect to the seal forming direction (left-right direction in FIG. 1) of the bottom seal portion 1c of the bag body 6. Further, the other flow path forming seal portion 3b is formed on the extended line of the side edge seal portion 1b substantially perpendicular to the bottom seal portion 1c of the bag body 6 (vertical direction in FIG. 1). The tip of the flow path 3 is closed at a position where the two flow path forming seal portions 3a and 3b intersect.

  The flow path forming seal portions 3a and 3b partition the flow path 3 on both sides in the width direction. That is, the unsealed part between one flow path forming seal part 3 a and the other flow path forming seal part 3 b is the flow path 3 of the spout 2. The direction of the flow path 3 of the spout 2 may be straight or may be bent in a gentle arc shape.

  As shown in FIG. 2, the spout 2 is provided with a shape holding member 4 made of a plastic material that is deformed when an external force is applied and that can hold the deformed shape. The plastic material is preferably a stretched polyolefin, particularly one produced by a process involving stretching or a process involving rolling and stretching. Examples of such plastic materials include Forte (registered trademark) of Sekisui Molding Industry Co., Ltd. and Techno Roto (registered trademark) of Mitsui Chemicals Co., Ltd. Manufactured using polymers as raw materials. When the shape holding member 4 is made of polyolefin, as shown in FIG. 2, the shape holding member 4 can be attached to the sealant layer on the inner surface of the film 1 by sealing with a heat seal or an ultrasonic seal.

In order to facilitate opening, the spout 2 has an opening assisting line 2a made of, for example, a half cut groove formed by a laser so as to cross the flow path 3, and one or both flow path forming seal portions 3a, It is also possible to provide opening start means (not shown) such as notches and tabs (knobs) that can be formed by punching or the like on 3b. In the case of this embodiment, the opening 7 is formed by tearing along the opening assisting line 2a.
Even when the contents are first taken out from the bag body 6, it is not necessary to prepare the shape holding member 4 in a predetermined shape in advance, and simply by opening the spout 2 and opening the opening 7, It is possible to start taking out. The method for taking out the contents is not particularly limited, and can be poured out with the opening 7 facing sideways or squeezed out with the opening 7 facing down. Since the shape holding member 4 is not separated from the bag body 6 at the time of taking out, there is no possibility of losing the shape holding member 4 and impairing the reseal function.

In the bag body 6 of this embodiment, the longitudinal direction of the shape holding member 4 is provided along the flow direction of the flow path 3. Furthermore, the both side portions 3a and 3b of the flow path 3 are at least the width of the flow path 3 (in the width direction both sides sandwiching the central portion in the longitudinal direction of the shape holding member 4) in parallel with the shape holding member 4. The dimension in the direction indicated by the line S-S in FIG. 1 is made narrower toward the tip of the spout 2 along the flow direction of the flow path 3. In the case of this embodiment, the angle θ formed by the flow path forming seal portions 3a and 3b is not particularly limited, but is, for example, 40 to 75 °.
Thereby, even if it is a case where contents with low fluidity, such as powder, a granular object, and a viscous object, are poured out, contents become difficult to get caught in shape maintenance member 4.

The longitudinal direction of the shape retaining member 4 is the long side direction of the shape retaining member 4 formed in a tape shape or a rod shape, and more preferably the stretching direction in the stretched plastic material. As a result, a fold line crossing the flow path 3 is formed, the spout 2 is bent inward from the front end side of the flow path 3, and the number of fold lines is further increased to two or more. As shown, the spout 2 can be resealed by the fold or wrap 8. Since the shape of the folding part or the winding part 8 is held by the shape holding member 4, even if the film 1 is elastic, it can be kept resealed against its elastic force.
Moreover, if the folding part or the winding part 8 is reversed toward the front end side of the flow path 3 on the contrary, it can be extended again as shown in FIG.

  In the case of the bag body 6 of this embodiment, as shown in FIG. 1, a shape holding member 5 having the same shape holding property as that of the shape holding member 4 is also attached to the body portion. As a result, when the contents of the bag body 6 have been poured out and the bag body 6 is discarded, not only the spout 2 but also the body portion can be bent or rolled up to effectively reduce the volume of the bag body 6. Since the shape of the folding part or the winding part 8, 9 is held by the shape holding members 4, 5, the bag body 6 must be kept in a curled state against the elastic force even if the film 1 is elastic. Can do. Further, if necessary, it is possible to apply the external force by hand or the like and to stretch the bag body 6 again flat.

The shape holding member 4 can be attached to one side or both sides of the pair of films 1 and 1 constituting the spout 2. Also, two or more shape holding members 4 can be arranged on the film 1 on the same side.
In addition, as shown in FIG. 2, when the shape holding member 4 is sealed to the inner surface of the body film 1 constituting the spout 2, the shape holding member 4 is not easily dropped even if the outer surface of the bag body 6 is rubbed. Become. Although not particularly illustrated, the shape-retaining member 5 on the trunk portion side can be attached to the inner surface of the trunk film 1 with a seal. Of course, when the contents are not affected, the shape holding members 4 and 5 may be attached to the body film 1 by using an adhesive or a pressure sensitive adhesive.
The shape holding members 4 and 5 may be attached to the outer surface of the body film 1.

  As a film used for constituting a bag body such as the body film 1, a film made of a conventionally used film such as a biaxially stretched polypropylene, a biaxially stretched polyamide, a biaxially stretched polyester or the like is used as a base film. And a laminate in which a polyolefin resin such as low density polyethylene, linear low density polyethylene, ethylene-vinyl acetate copolymer, and polypropylene is laminated as a sealant layer on these base films. Examples of the method for producing the laminated film include a dry laminating method, an extrusion laminating method, and a coextrusion method. An adhesive or an anchoring agent can be provided between the base film layer and the sealant layer in order to improve the adhesive strength. In this case, a plurality of substrate films may be laminated to increase the strength of the bag. Alternatively, a metal foil such as an aluminum foil, a metal vapor-deposited layer, an inorganic vapor-deposited layer such as ceramic, an ethylene-vinyl alcohol copolymer film, or the like may be laminated in order to improve the barrier property against gas or ultraviolet rays.

The size of the bag body 6 is not particularly limited. For example, the height of the bag body 6 is about 100 to 500 mm, and the width of the bag body 6 (maximum width between both side edges) is about 70 to 300 mm. The filling amount of the object is about 100 to 5000 cm ³ .
The contents are not particularly limited, but can be applied to contents having low fluidity such as powders, granules, and viscous bodies that easily cause bridging. Examples of the powder or granule include powders or granules such as foods, grains, fertilizers, chemicals, or synthetic resins. The powder or granules may be dried or contain liquid. Examples of viscous materials include jelly, highly viscous oils, and liquid adhesives.

6 to 8 show a bag 10 according to a second embodiment of the present invention and a usage pattern thereof. The bag body 10 is a standing pouch composed of two body films 11 and 11 having the same planar shape and a bottom film 15 folded in half with a folding line 15a as a center line. The bottom film 15 is folded so that the fold line 15a is inward, and is interposed between the lower portions of the pair of body films 11 and 11.
Side edge seal portions 11 a and 11 b are formed on both side edge portions of the bag body 10, respectively. Further, a bottom seal portion 15b is formed in the lower portion of the bag body 10 by heat-sealing the body film 11, 11 and the bottom film 15 at the lower end edge portions of the opposing surfaces facing each other. A body portion is formed in a portion surrounded by the side edge seal portions 11a and 11b and the bottom seal portion 15b, and the contents can be accommodated.

  A spout 12 having a flow path 13 facing obliquely upward of the bag body 10 is provided in the upper portion of the bag body 10 (specifically, one corner on the upper side). The flow path 13 is partitioned by flow path forming seal portions 13a and 13b formed on both sides in the width direction. The front end portion of the flow path 13 is closed by a sealing seal portion 13c provided between the two flow path forming seal portions 13a and 13b. When the sealing seal portion 13c is removed, an opening 17 for pouring the contents is formed at the tip of the spout 12 as shown in FIG. The spout 12 may be provided with an opening opening means (not shown) such as an opening assisting line, a notch or a tab (knob).

  A space between the flow path forming seal portion 13 a and the side edge seal portion 11 a is opened as a filling port 16, and the contents can be filled into the bag body 10 through the filling port 16. In addition, after the filling of the contents, the upper part sealing part 18 (refer FIG. 7) is formed by heat-sealing trunk | drum films 11 and 11 in the periphery of the filling port 16, and the filling port 16 is closed.

Also in the bag body 10 of the present embodiment, as in the bag body 6 of the first embodiment, the shape holding member 14 is provided along the flow direction of the flow path 13, and both side portions 13a, 13b of the flow path 13 are At least in a portion parallel to the shape holding member 14, the width of the flow path 13 is narrowed as it goes to the tip of the spout 12.
Accordingly, as shown in FIG. 7, even when the spout 12 is opened and a low-fluid content such as a powder, a granule, or a viscous material is poured out, the content is a shape-retaining member. 14 is difficult to get caught. Further, as shown in FIG. 8, the spout 12 is bent or folded from the front end side of the flow path 13 to form a folded portion or a rolled portion 19 whose shape is held by the shape holding member 14, and the spout 12 12 can be resealed.

Since the bag body 10 according to the present embodiment has self-supporting properties, the bag body 10 is less likely to fall while the container after resealing is stored, and content can be prevented from spilling unintentionally.
Although not shown in FIGS. 6 to 8, as in FIG. 5, a shape-retaining member is also provided on the body of the bag body 10 of the second embodiment, and not only the spout but also the body is bent, The body can be reduced efficiently.

As mentioned above, although this invention has been demonstrated based on suitable embodiment, this invention is not limited to the above-mentioned example, Various modifications are possible in the range which does not deviate from the summary of this invention.
The spout of the bag can be formed by folding the film on one or both sides of the flow path.
The direction of the flow path is not limited to an obliquely upward direction with respect to the bottom side of the bag body, and may be vertically upward or laterally.

θ: angle formed by both sides of the flow path, 1,11: barrel film, 2,12: spout, 3,13 ... flow path, 3a, 3b, 13a, 13b ... flow path forming seal (flow path (Both sides), 4, 5, 14 ... shape holding member, 6, 10 ... bag body (packaging bag), 7, 17 ... opening, 8, 9, 19 ... folding part or winding part.

Claims (4)

A bag body having a barrel portion for containing contents at the bottom, and a spout formed at the top of each side of the flow path by sealing or folding the film,
The spout is provided with a first shape holding member made of a plastic material that is deformed when external force is applied and that can hold the deformed shape,
The first shape retaining member has a longitudinal direction provided along the flow direction of the flow path, and at least a portion of the spout that is parallel to the first shape retaining member. Is narrowed as it goes to the tip along the flow direction of the flow path ,
A second shape holding member made of a plastic material that is deformed when external force is applied and that can hold the deformed shape is attached to the body in the vertical direction. Characteristic bag.   The bag according to claim 1, wherein the plastic material is stretched polyolefin. The bag according to claim 2, wherein the first shape holding member is sealed to an inner surface of a film constituting the spout.   The bag according to any one of claims 1 to 3, wherein the contents are powder, granules, or a viscous body.

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