JP2016088527A - Bag body with spout - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bag body with a spout which maintains barrier property before opening, achieves linear cutting performance during opening, and can be opened by a single operation.SOLUTION: A bag body 1 with a spout includes a bag body 2 formed by welding a pair of opposing films along the outer edge, and a spout member 20 attached to the bag body. The spout member comprises: a long plate-like base part welded to the pair of films; a pouring cylinder part 22 which extends from the central part of the base part in a longitudinal direction to the outside of the bag body, and allows a fluid to flow to the outside from the bag body and flow to the inside; and an opening member 25 having a cap part 23 joined so as to block the tip of the pouring cylinder part, and a wing part 24 extending to both sides of the cap part in substantially parallel to the base part. A notch part 12 is formed at a part covering a gap portion 20a between the base part and the opening member. The opening member is encapsulated in the pair of films by welding the films around the opening member including the gap portion so as to cover at least the notch part.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a spouted bag. More specifically, the present invention relates to a bag body with a spout that can maintain a barrier property before opening and linear cut property at the time of opening and can be opened by one operation (one action).

  A bag body with a spout (pouch bag with a spout) in which a bag body made of a synthetic resin film is filled with a liquid or the like and a spout serving as a spout is attached to an opening of the bag body is known. The pouch bag is manufactured by sandwiching a spout integrally molded with a synthetic resin or the like between a pair of films, heat-welding, and fixing to a bag body. In order to ensure high sealing performance, bags having various configurations have been developed so far.

  If the spout part is exposed, it is difficult to maintain airtightness for a long time. Therefore, in order to maintain airtightness, a pouch bag in which a spout portion is also sealed and welded in a film has been proposed (see, for example, Patent Documents 1 and 2).

Japanese Utility Model Publication No. 55-127043 JP-A-11-263355

However, in such a pouch bag in which such a spout portion is enclosed in a film, when opening, a two-step operation (1) cutting the film to expose the cap and (2) opening the cap ( Two action) was required.
Also, when the film is cut by hand and opened, if the film does not cut straight (substantially linearly along the base), the oblique or convex piece of film will cover the injection tube part, There was also a risk that the content may be hindered when the content is poured out, or the fragmented film piece may be lost or mixed into the content.

  The present invention has been made in view of the above-described conventional circumstances, and maintains a barrier property before opening and a straight cut property at the time of opening, and can be opened with one operation (one action). It aims at providing a bag body with.

[1]
A bag formed by welding a pair of opposing films along the outer edge;
A spout member attached to the bag body by being sandwiched between the pair of films and being at least partially welded to the pair of films,
The spout member is
A long plate-like base welded to the pair of films;
A tube-injecting portion that extends from the longitudinal center of the base to the outside of the bag, allows fluid to flow from the inside of the bag to the outside, and allows fluid to flow from the outside to the inside;
A cap portion joined so as to close the tip of the tube-injecting portion, and an opening member having blade portions extending on both sides of the cap portion substantially parallel to the base portion,
Of the pair of films, a cut portion is formed at a portion covering a gap portion between the base and the opening member,
With a spout, wherein the opening member is enclosed in the pair of films by welding a film around the opening member including the gap portion so as to cover at least the cut portion. Bag body.
[2]
By pinching the opening member and twisting it against the film surface,
The joint portion between the injection tube portion and the cap portion is cut, and the film at the welding portion is torn along the extension line of the cut portion starting from the cut portion, and the bag body is opened. The bag body with a spout as described in [1].
[3]
The spouted bag according to [1] or [2], wherein the cut portion is formed so as to protrude beyond an end portion of the blade portion.
[4]
The spout-equipped bag according to any one of [1] to [3], wherein the cut portion is formed inside an end portion of the film.
[5]
In the spout member, it has a 1st projection part provided in the base of the casting cylinder part welded to the pair of films, It is given in any 1 paragraph of [1]-[4]. Bag with spout.
[6]
With the spout according to any one of [1] to [5], the spout member has a second projecting portion extending from the blade portion to the base side so as to follow the tube-injecting portion. Bag body.

  In the bag of the present invention, since the spout member is enclosed in the film, high barrier properties can be maintained until opening. Further, by twisting the blade portion, the joint portion between the injection tube portion and the cap portion is cut, and the welding portion of the welded portion starts from the cut portion of the portion covering the gap portion between the base portion and the opening member. The film tears (substantially linearly) along the extension of the notch. Thereby, opening of a casting tube part and opening of a film can be performed substantially simultaneously by one operation | movement (one action).

It is a top view which shows the example of 1 structure of the bag body with a spout of this invention. It is a figure which shows a mode that the bag body with a spout of this invention is opened. It is a perspective view which shows one structural example of a spout member. It is a top view which shows an example of the shape of a notch part. It is a top view which shows an example of the shape of a notch part. It is a top view which shows an example of the shape of a notch part. It is a top view which shows an example of the shape of a notch part. It is a top view for demonstrating the shape of a blade | wing part. It is a figure explaining the welding part at the time of welding a spout member to a film. It is a figure explaining the welding part at the time of welding a spout member to a film. It is a figure which shows one structural example at the time of applying the bag body of this invention to a gas detection tool. It is a figure which shows one structural example at the time of applying the bag body of this invention to a gas detection tool.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1: is a top view which shows the example of 1 structure of the bag body with a spout of this invention.
The spout-equipped bag body 1 of the present invention has a bag body 2 formed by welding a pair of opposing films 10 along outer edges, and at least a part of the bag body 1 is welded to the pair of films 10. Thus, the spout member 20 is attached to the bag body 2, and the spout member 20 has a long plate-like base portion 21 welded to the pair of films 10, and the bag body 2 from the center in the longitudinal direction of the base portion 21. The cylinder portion 22 extends outside the bag body 2 and allows the outflow of fluid from the inside of the bag body 2 to the outside and the inflow of fluid from the outside to the inside. An opening member 25 having a cap portion 23 and a blade portion 24 extending on both sides of the cap portion 23 substantially in parallel with the base portion 21, and the base portion 21 and the opening member 25 of the pair of films 10. Gap portion 20a between The notch 12 is formed in the portion to be covered, and the film 10 around the opening member 25 including the gap portion 20a is welded so as to cover at least the notch 12 (welding portions 11 and 13). Is enclosed in a pair of films 10.

As shown in FIG. 2, in such a spout-equipped bag body 1, the opening member 25 is pinched with a finger (FIG. 2 (a)) and twisted with respect to the film surface (FIG. 2 (b)). While the joining part of the part 22 and the cap part 23 is cut | disconnected, the film 10 of the welding part (welding part 13) is torn along the extension line | wire of the notch part 12 from the notch part 12 as a starting point. Thereby, the casting tube part 22 is opened and the film 10 is cut (FIG. 2 (c)).
In the spout-equipped bag body 1, since the spout member 20 is enclosed in the film 10, high barrier properties can be maintained until opening. Further, by twisting the blade portion 24, the opening of the casting tube portion 22 and the opening of the film 10 can be performed almost simultaneously by one operation (one action). Further, since the cut portion 12 is formed in the film 10, the film 10 is torn by using the cut portion 12 as a starting point by twisting the blade portion 24. Moreover, the 1st projection part 26 is welded to a pair of film 10 (refer FIG. 9 mentioned later). Thereby, the film 10 can be cut straight (substantially linearly) along the extension line of the cut portion 12, and the film 10 that is cut off obliquely or in a convex shape does not cover the injection tube portion 22. Therefore, it is possible to suitably perform the dispensing with the content aimed at without being hindered. Further, since the opening member 25 is enclosed in the film 10, the opening member 25 after being cut is divided together with the film 10 to prevent the film piece from being lost or mixed into the contents.

<Spout member>
As shown in FIG. 3, the spout member 20 has a long plate-like base portion 21 welded to a pair of films 10 constituting the bag body 2, and extends outwardly from the longitudinal center portion of the base portion 21. A cylindrical portion 22, a first protrusion 26 that is welded to the pair of films 10 and provided at the base of the cylindrical portion 22, a cap portion 23 that is joined so as to close the tip of the cylindrical portion 22, and An opening member 25 having blade portions 24 extending on both sides of the cap portion 23 substantially in parallel with the base portion 21.
The spout member 20 can be made by an injection molding method or the like. Examples of the material of the spout member 20 include synthetic resins such as polyethylene and polypropylene.

The base 21 has a long plate shape. The spout member 20 is attached to the bag body 2 by being sandwiched between the pair of films 10 and the base 21 being welded to the film 10. In order to improve the weldability and adhesion to the film 10, the base 21 may have irregularities formed on the surface thereof.
The injection cylinder portion 22 is a cylinder body that extends from the central portion in the longitudinal direction of the base portion 21 toward the outside of the bag body 2, and the outflow of fluid from the inside of the bag body 2 to the outside and the outside to the inside of the bag body 2. Allow fluid inflow. In addition, the tip shape of the injection tube portion 22 is not particularly limited, and can be changed as appropriate according to the use of the bag body 2. For example, the tip portion may be narrowed, or when used by being attached to another member, an uneven shape or a thread for attachment may be formed.
The unsealing member 25 has a cap portion 23 joined so as to close the tip of the injection tube portion 22, and a blade portion 24 extending on both sides of the cap portion 23 substantially parallel to the base portion 21. The blade portion 24 serves as a knob portion when the bag body 2 is opened.

And in the bag body 1 with a spout of this invention, as shown in FIG. 1, it cuts into the site | part which coat | covers the space | gap part 20a between the base 21 and the opening member 25 among the pair of films 10 which comprise the bag body 2. As shown in FIG. Part 12 is formed.
Further, the opening member 25 is sealed in the pair of films 10 by welding the film 10 around the opening member 25 including the gap portion 20 a so as to cover at least the cut portion 12.

  In such a spout-equipped bag body 1, as shown in FIG. 2, by pinching the opening member 25 and twisting it with respect to the film surface, the joint portion between the barrel portion 22 and the cap portion 23 is cut, The welded portion 13 is torn along the extended line of the notched portion 12 starting from the notched portion 12. Thereby, while the injection tube part 22 is opened, the film 10 is parted.

Thus, in the spout-equipped bag body 1 of the present invention, the opening of the film 10 and the opening of the cap portion 23 can be performed almost simultaneously in one operation by twisting and opening the blade-shaped opening member 25. .
Since the whole spout member 20 is enclosed in the film 10, high airtightness can be maintained until opening, and deterioration of the contents can be suppressed.
In addition, since the opening member 25 is enclosed in the film 10, the film piece and the opening member 25 are not separated even after the bag 2 is opened. Therefore, after opening, the film piece can be separated together with the molded product. The film piece can be prevented from being lost or mixed into the contents.

Furthermore, it is preferable that the spout member 20 has a first protrusion 26 that is welded to the pair of films 10 and is provided at the base of the casting tube portion (see FIG. 9 described later). Thereby, the film 10 can be cut | disconnected straightly (substantially linearly) along the upper end part of the 1st projection part 26. FIG. Therefore, the film 10 does not cover the casting tube portion 22 and can be satisfactorily performed without hindering the dispensing and inhalation of the contents.
The first protrusion 26 has a polygonal shape. The first protrusion 26 is attached to the bag 2 by being welded to the film 10. In addition, the shape of the 1st projection part 26 is not specifically limited, A triangle, a tetragon | quadrangle, and a pentagon may be sufficient as long as the edge | side is formed in the upper end. In addition, it is preferable that the upper edge of the first protrusion 26 is on a line connecting the cut portions 12 of the film 10 and is at the base of the injection tube portion 22. Thereby, it can cut suitably straight (substantially linearly) at the time of opening.

  By providing the welded portion 13 at the depression position (gap portion 20a) between the blade portion 24 and the base portion 21, the range in which the cut portion 12 can be provided in the gap portion 20a is expanded. Thereby, the cut | notch part 12 can be provided in the effective position matched with the opening method, without impairing barrier property.

Here, as shown in FIG. 1, the cut portion 12 is preferably formed so as to protrude beyond the end portion of the blade portion 24. In the example shown in FIG. 1, the cut portion 12 protrudes beyond the end portion of the blade portion 24, but does not reach the end portion of the film 10.
However, the present invention is not limited to this, and the cut portion 12 may be formed so as to reach the end portion of the film 10 as shown in FIG. 4, or the cut portion 12 may be formed as shown in FIG. Further, it may be formed so as not to protrude from the end portion of the blade portion 24. In order to propagate the twisting force of the opening member 25 well to the notch 12, the notch 12 is formed so as to protrude beyond the end of the blade 24 as shown in FIG. 1 or FIG. It is preferable.

  For example, as shown in FIG. 6, when the cut portion 12 is formed only in the welded portion 11 on the outer edge of the bag body, the cut portion 12 is far from the central axis of twisting, and the force that twists the opening member 25 is applied to the cut portion 12. Propagation is difficult and the force escapes, so it is difficult to cut the film 10 of the welded portion 13 well. In this case, it becomes the tearing opening from the cut | notch part 12, and will be multistage opening. Furthermore, there is a possibility that the blade part 24 and the film piece are separated after opening.

  In addition, if the cut portion 12 reaches the end of the film 10, the cut portion 12 may be unintentionally torn due to some impact applied to the cut portion 12. Therefore, as shown in FIG. 1, the cut portion 12 is formed so as to protrude beyond the end portion of the blade portion 24 but not to reach the end portion of the film 10 (inward from the end portion of the film 10). Most preferably.

In addition, the spout member 20 itself has inferior barrier properties as compared to the film 10. Therefore, if the cut portion 12 is inserted to the inside of the gap portion 20a so as to be opened in one step, the barrier property is lowered. For example, as shown in FIG. 7, when one long cut portion 12 is continuously formed across the casting tube portion 22, the barrier property is lowered. Therefore, it is preferable that the notch portion 12 is not formed on the injection tube portion 22 but is formed on both sides of the injection tube portion 22.
By forming the cut portion 12 including the gap portion 20a between the blade portion 24 and the base portion 21, a force for twisting the opening member 25 can be efficiently transmitted to the cut portion 12, and the cut portion 12 is the starting point. The film 10 of the welding part 13 can be torn suitably. Furthermore, since the welding part 13 is provided so that the notch part 12 may be covered, favorable barrier property can be maintained.

Thus, in the bag body 1 with a spout of this invention, the choice of the opening method can be increased. Examples of the method for opening the bag body 2 include opening by pulling the end of the bag, opening by twisting the bag, opening by folding the bag, and the like.
The form of the cut portion 12 is not particularly limited, and may be, for example, a straight cut line (slit), or a perforation or a half cut.

Here, as shown in FIG. 8, if the length of the portion into which the spout member 20 is inserted in the bag body 2 is A and the lateral length of the blade portion 24 is B, the blade portion in the spout member 20 The length C of 24 is preferably 0.5 × A ≦ B, and more preferably 0.6 × A <B <0.9 × A.
Further, when the length of the blade portion 24 in the vertical direction is C, C is preferably 7 mm or more, and more preferably 10 mm or more and 20 mm or less.
By setting the size of the blade portion 24 in the above range, when opening the bag body 2, the blade portion 24 can be firmly held with a finger, and twisting and opening are facilitated.

  As shown in FIG. 3, the spout member 20 has a first protrusion 26 that is provided at the base of the casting tube portion 22 in the base portion 21 and is welded to the pair of films 10. The film 10 of the welded portion 13 can be cut straight along the upper end portion of the first protruding portion 26 by the first protruding portion 26, and the cutting portion film 10 covers the injection tube portion 22. Can be suppressed. Further, the first protrusion 26 can efficiently transmit the twisting force of the opening member 25 to the notch 12, and the film 10 of the welded portion 13 is preferably straight (substantially linearly) starting from the notch 12. ) Can tear.

  Moreover, it is preferable that the surface of the base 21 on the side on which the injection tube portion 22 extends is a mountain-shaped inclined surface 21 a with the center protruding along the longitudinal direction. Of the pair of films 10 constituting the bag body 2 by the inclined surface 21a, the films 10 are welded to each other at the welded portion 13 at a portion covering the gap portion 20a between the base portion 21 and the opening member 25. Can be eliminated. Thereby, a suitable notch can be formed in the notch 12.

When the spout member 20 is welded to the film 10, the first protrusions 26 are also welded to the film 10. As shown in FIG. 9A, when the first protrusion 26 is welded to the film 10, the film 10 of the welded portion 13 is attached to the first projection as shown by a dotted line X in FIG. 9B. A straight cut can be made along the upper end of the protrusion 26.
On the other hand, as shown in FIG. 10A, when the first protrusion 26 is not welded to the film 10, as shown by the dotted line Y in FIG. May not be cut straight, and the film 10 at the cutting portion may cover the casting portion 22.
In FIG. 9 and FIG. 10, a portion of the spout member that is welded to the film 10 is shaded.

Moreover, it is preferable that the spout member 20 has the 2nd projection part 27 extended to the base 21 side along the injection cylinder part 22 from the blade | wing part 24 in the opening member 25, and also this 2nd protrusion. The part 27 is preferably welded to the film 10. In addition to the first protrusion 26, the second protrusion 27 is welded to the film 10, so that the film 10 of the weld 13 is cut straight along the upper end of the first protrusion 26. Thus, the film 10 of the welded portion 13 can be more suitably torn from the cut portion 12 as a starting point.
Further, when the spout member 20 is welded to the film 10, it is preferable that the lower portion 28 of the blade portion 24 is also welded to the film 10. Thereby, the force which twists the opening member 25 can be efficiently transmitted to the notch part 12.

<Bag body>
The bag body 2 is formed by welding a pair of opposing films 10 along the outer edge.
The shape of the bag body 2 is not particularly limited, and bag-shaped films of various shapes such as a four-side sealed bag, a three-side sealed bag, a barracuda bag, a pillow bag, a pillow gazette bag, a four-corner seal gazette bag, a standing bag, and a tubular bag are used. be able to.

  The film 10 constituting the bag body 2 is a laminated film in which at least a base material layer and a sealant layer are laminated. The base material layer has the strength required as a packaging material, and the sealant layer is disposed so as to be the innermost surface of the bag. The sealant layer is thermally bonded to the spout member 20 (base portion 21) and, if necessary, is thermally bonded to the sealant layers. Do. Further, it is desirable to further laminate a barrier layer for providing a barrier function such as an oxygen barrier on the laminated film. Thereby, the oxidative deterioration of the contents can be prevented. Other layers can be further laminated on the laminated film.

  First, the base material layer is a layer for maintaining a certain strength so that an unexpected bag breakage or the like does not occur after the packaging material is filled. Examples of the film 10 constituting the base material layer include a stretched film made of polypropylene (hereinafter referred to as PP), a stretched film made of nylon resin such as nylon 6, nylon 66, and nylon 12, polyethylene terephthalate (hereinafter referred to as PET), and polybutylene terephthalate. A biaxially stretched film of polyester resin is preferably used. Moreover, you may use films other than these as needed. Further, not only one of these films but also a plurality of them may be laminated to form a base material layer. For example, a PET film and a nylon film can be bonded with a polyester adhesive to form a base material layer.

  The thickness of the base material layer is preferably 5 microns to 100 microns, more preferably 5 microns to 50 microns, and still more preferably 10 microns to 30 microns. Each of the films 10 that can be used for the base material layer can be produced according to a conventional method, and is not particularly limited.

  Next, the sealant layer is a layer that is disposed so as to be the innermost surface of the bag body 2 and is welded to the spout member 20. When a four-side seal bag or the like is used as the film 10, the sealant layers in the frame portion of the laminated film are thermally bonded.

  The laminated film is further preferably provided with a barrier layer having gas barrier properties against water, odors, and the like, and particularly preferably provided with an oxygen barrier layer that prevents permeation of oxygen. As a result, it is possible to prevent oxidative degradation of the contents and migration of odorous substances from the outside to the contents over a long period of time. The barrier layer is arranged between the base material layer and the sealant layer or on the opposite side of the sealant layer with respect to the base material layer.

  The barrier layer may be provided on the surface of the film 10 constituting the base material layer. For example, a layer having a barrier property such as polyvinylidene chloride, polyvinyl alcohol, or organosiloxane is coated on the surface of the film 10 constituting the base material layer, or an inorganic oxide such as aluminum oxide or silicon oxide is deposited. Or you may. Preferably, aluminum is deposited.

  Moreover, you may make it use a film separate from a base material layer as a barrier layer. For example, ethylene-vinyl alcohol copolymer resin (hereinafter referred to as EVOH), polyvinylidene chloride, polyvinyl alcohol, PET, or an aluminum foil may be used as the barrier layer. Preferably, an EVOH film or an aluminum foil is used. When a film different from the base layer is used, the thickness varies depending on the barrier performance of the resin. For example, EVOH preferably has a thickness of 5 to 50 microns, more preferably 10 to 30 microns. is there. Moreover, when using aluminum foil, it is preferable that it is 20 microns or less, More preferably, they are 3 microns or more and 10 microns or less.

  The laminated film used for the bag body 2 can be obtained by laminating the films constituting the base material layer and the sealant layer. At that time, if necessary, a film constituting the barrier layer is also laminated. In laminating, the layers are laminated so that the sealant layer is the outermost layer of the laminated film. Therefore, the order of lamination is either the sealant layer, the barrier layer, or the base material layer, or the sealant layer, the base material layer, or the barrier layer in order from the sealant layer side. When a spout-equipped bag is configured, this sealant layer becomes an inner layer of the bag 2. In addition, you may laminate | stack another layer in the range which does not impair the function of the said layer. For the lamination, a known method can be used without particular limitation, and for example, dry lamination, extrusion lamination, coextrusion lamination, hot melt lamination, and the like can be used. Dry lamination and extrusion lamination are preferred.

  The spout member 20 and the film 10 can be welded by thermocompression bonding, heated gas, electric heat, hot air, a microframe, ultrasonic waves, or the like.

The spout-equipped bag body 1 of the present invention thus produced can be used for the following uses.
For example, as dispensing applications, packaging materials for pharmaceutical products, packaging materials for oral nutrition foods, packaging materials for sports supplementary foods, packaging materials for nasal washing, packaging materials for travel hair care (shampoo, rinse), etc. Is mentioned. Moreover, as a suction use, the use as a gas detection tool which sucks and detects gas is mentioned.
All of these are assumed to be used only once, and are not assumed to be used repeatedly.

FIG.11 and FIG.12 is a figure which shows one structural example at the time of applying the bag body of this invention to a gas detector, (a) is a top view, (b) is sectional drawing.
In the gas detector 30, an elastic body 31 and a light-emitting body 32 for gas detection are sealed inside the bag body 2 and sealed in a reduced pressure state. A scaled window 33 may be formed in the bag body 2. As shown in FIG. 12, the elastic body expands by cutting out the spout member 20 at the time of use, and the outside air flows from the injection tube portion 22.
When the gas to be detected is contained in the outside air, the light emitter emits light when the gas to be detected reacts with the light emitter. Thereby, the presence or absence of the gas to be detected can be confirmed.

  As the elastic body 31, a gas-permeable foamed elastic body is used. Such a material is not particularly limited, and conventionally known materials selected from various foamed rubbers and foamed thermoplastic elastomers can be used. Specifically, for example, rubber materials such as ethylene / propylene / diene rubber (EPDM), nitrile rubber (NBR), styrene / butadiene rubber (SBR), natural rubber (NR), polyurethane rubber, polyethylene or polystyrene elastomer, etc. These thermoplastic elastomer materials can be used.

As the gas detection agent (light emitter 32), for example, the following is used.
When the gas to be detected is sulfur dioxide, a dried product obtained by attaching a bulk potassium solution to the silica gel particles and drying them is used.
In the case of styrene gas, a sheet-like member coated with a gas detector containing zeolite is used.
In the case of hydrogen sulfide, phosphine, hydrogen cyanide, and diborane, inorganic light emitters such as acetate, silver sulfate, palladium sulfate and ammonium molybdate, and copper sulfate are used. Further, a reactant obtained by selecting at least one compound from the group consisting of silver p-toluenesulfonate, zinc p-toluenesulfonate, or iron p-toluenesulfonate, and an alkali A detection agent in which a reagent and a colorant are arranged on the surface of the carrier particle can also be used.
In the case of carbon monoxide, a detection agent in which palladium potassium sulfite is supported on silica gel or a detection agent in which iodine pentoxide and fuming sulfuric acid are supported on silica gel is used.
In the case of toluene, a detection agent in which iodine pentoxide and sulfuric acid are adsorbed on silica gel is used.

  When the spout-equipped bag 1 is applied to the gas detector 30, the gas detector 30 maintains airtightness until just before opening, so that the contents react or deteriorate before opening. It is prevented.

  Although the embodiment of the present invention has been described above, the present invention is not limited to this, and can be appropriately changed without departing from the spirit of the invention.

  By using the spouted bag according to the present invention, it is possible to maintain barrier properties before opening and straight cut at the time of opening, and to open with one action, for pharmaceuticals, liquid foods, beverages, sanitary goods It can be widely used as a bag and a bag for a gas detector.

DESCRIPTION OF SYMBOLS 1 Bag body with a spout 10 Film 11 Welding part 12 Notch part 13 Welding part 20 Spout member 20a Space | gap part 21 Base part 22 Injection cylinder part 23 Cap part 24 Blade | wing part 25 Opening member 26 1st projection part 27 2nd projection part 28 Lower part of blade 30 Gas detector

Claims (6)

A bag formed by welding a pair of opposing films along the outer edge;
A spout member attached to the bag body by being sandwiched between the pair of films and being at least partially welded to the pair of films,
The spout member is
A long plate-like base welded to the pair of films;
A tube-injecting portion that extends from the longitudinal center of the base to the outside of the bag, allows fluid to flow from the inside of the bag to the outside, and allows fluid to flow from the outside to the inside;
A cap portion joined so as to close the tip of the tube-injecting portion, and an opening member having blade portions extending on both sides of the cap portion substantially parallel to the base portion,
Of the pair of films, a cut portion is formed at a portion covering a gap portion between the base and the opening member,
With a spout, wherein the opening member is enclosed in the pair of films by welding a film around the opening member including the gap portion so as to cover at least the cut portion. Bag body. By pinching the opening member and twisting it against the film surface,
The joint part between the injection tube part and the cap part is cut, and the welding part is torn along the extension line of the notch part from the notch part to open the bag body. The bag body with a spout of 1.   The spouted bag according to claim 1 or 2, wherein the cut portion is formed so as to protrude beyond an end portion of the blade portion.   The bag body with a spout as described in any one of Claims 1-3 in which the said notch part is formed inside the edge part of the said film.   The spout according to any one of claims 1 to 4, wherein the spout member has a first protrusion provided at a base of the tube-injecting portion, which is welded to the pair of films. With bag body.   The spout-equipped bag according to any one of claims 1 to 5, wherein the spout member has a second protrusion extending from the blade portion to the base side so as to follow the injection tube portion. body.