JP2020169053A - Self-standing packaging bag - Google Patents

Abstract

To develop a self-standing packaging bag easy to pour contents into a container for refill.SOLUTION: A bag body 1 has a body portion and a bottom surface 1i, and can stand on its own with the bottom surface 1i facing down. The bag body 1 has a spout member 2 and a weak machined portion 1h. The spout member 2 is arranged outside the bottom surface 1i, and has a cylindrical portion 2A extending in a direction intersecting the bottom surface 1i and a flange portion 2B protruding laterally from the cylindrical portion 2A and joined to an outer surface of the bottom surface 1i. The weak machined portion 1h is formed inside the cylindrical portion 2A without penetrating in a thickness direction of the bottom surface 1i.SELECTED DRAWING: Figure 2

Description

The present invention relates to a self-supporting packaging bag.

In order to save resources by repeatedly using the container containing the contents, a refill product in which the contents for replacement or replenishment are filled in the refill container may be supplied.
A self-supporting pouch bag having a spout that can be opened as a refill container is known.
For example, Patent Document 1 discloses a storage container in which a sheet-shaped front member, a back member, and a bottom member are laminated at their respective peripheral edges. The container has a boat-shaped bottom formed by opening the folded bottom member, and can stand on its own by an edge extending from the outer peripheral portion of the bottom. At the upper corner of the storage container, a spout portion is formed by a deformed seal portion.

JP-A-2017-1684

However, the above-mentioned conventional techniques have the following problems.
In many cases, the container to be refilled is not particularly provided with an injection port for injecting the contents for refilling. If it does not have a refill inlet, the refill contents are filled into the container through a spout intended for pouring from the container.
For example, in the case of contents that are used after being weighed with a measuring cup or the like, the inlet of the container has a curved spatula shape or an opening that diagonally crosses the tip for the purpose of preventing liquid dripping and adjusting the flow rate. Is provided with a spout portion in which is formed. On the outside of the spout portion, a collection opening for collecting the contents dripping or spilling from the tip of the spout portion is provided.
Such a spout portion is suitable for pouring the contents little by little from the container, but is not suitable for the application of injecting a large amount of contents from the outside. Specifically, when the contents are injected from the refill container into the container to be refilled, the opening of the spout portion is likely to be closed. Therefore, there is a problem that the contents easily overflow from the container to be refilled.
It is also conceivable to form the spout portion of the refill container into a tapered shape that can be inserted into the spout portion of the container to be refilled. However, in this case, there is a problem that it takes time to refill. Further, since a tapered spout port is required, the opening operation becomes complicated and the cost of the refill container may increase.
Since the contents of the refill container may be used for refilling another container having a pouring guide member having a different shape, there is also a problem that it is difficult to optimize the shape of the spout.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a self-standing packaging bag in which the contents can be easily poured into a container to be refilled.

In order to solve the above problems, the self-supporting packaging bag according to the first aspect of the present invention is a self-supporting packaging bag that has a body portion and a bottom portion and can stand on its own with the bottom portion facing downward. A first injection outlet portion having a tubular portion arranged on the outside of the bottom portion and extending in a direction intersecting the bottom portion, and a flange portion protruding laterally from the tubular portion and joined to the outer surface of the bottom portion. And a fragile processed portion formed inside the tubular portion without penetrating in the thickness direction of the bottom portion.

In the self-supporting packaging bag, the flange portion may extend long in the longitudinal direction of the bottom portion.

In the self-standing packaging bag, the width of the flange portion in the lateral direction may be equal to or less than the outer width of the tubular portion in the lateral direction.

In the self-supporting packaging bag, an edge portion extending downward from the bottom portion is provided on the outer peripheral portion of the bottom portion, and the height of the first injection outlet portion from the bottom portion is at least the height of the flange portion. It may be larger than the length obtained by subtracting the height of the edge from the distance from the outer edge to the edge.

In the self-supporting packaging bag, the fragile processed portion may be formed by a plurality of unit fragile portions evenly dispersed inside the tubular portion.

In the self-supporting packaging bag, a second injection port portion capable of forming an opening may be further provided above the bottom portion in the body portion.

According to the self-supporting packaging bag of the present invention, it is easy to pour the contents into the container to be refilled.

It is a schematic perspective view which shows an example of the self-supporting packaging bag of 1st Embodiment of this invention. FIG. 1 is a view A in FIG. It is a schematic front view which shows an example of the sheet which forms the body part in the self-supporting packaging bag of 1st Embodiment of this invention. It is a schematic front view which shows an example of the sheet which forms the bottom part in the self-supporting packaging bag of 1st Embodiment of this invention. FIG. 4 is a sectional view taken along line DD in FIG. FIG. 2 is a sectional view taken along line BB in FIG. FIG. 2 is a cross-sectional view taken along the line CC in FIG. It is a process explanatory drawing which shows an example of the manufacturing method of the self-supporting packaging bag of 1st Embodiment of this invention. It is a process explanatory drawing which shows an example of the manufacturing method of the self-supporting packaging bag of 1st Embodiment of this invention. It is a schematic disassembled perspective view which shows an example of the spout part of the container to be refilled. It is a top view of the container to be refilled. 11 is a cross-sectional view taken along the line EE in FIG. It is a schematic diagram which shows an example of the use method of the self-supporting packaging bag of 1st Embodiment of this invention. It is a schematic diagram which shows an example of the use method of the self-supporting packaging bag of 1st Embodiment of this invention. It is a schematic diagram which shows an example of the use method of the self-supporting packaging bag of 1st Embodiment of this invention. It is a schematic bottom view which shows the self-supporting packaging bag of the modification (first modification) of the 1st Embodiment of this invention. It is a schematic bottom view which shows the self-supporting packaging bag of the modification (second modification) of the 1st Embodiment of this invention. It is a schematic front view which shows an example of the self-supporting packaging bag of the 2nd Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In all the drawings, even if the embodiments are different, the same or corresponding members are designated by the same reference numerals, and common description will be omitted.

[First Embodiment]
The self-supporting packaging bag of the first embodiment of the present invention will be described.
FIG. 1 is a schematic perspective view showing an example of a self-standing packaging bag according to the first embodiment of the present invention. FIG. 2 is a view A in FIG. FIG. 3 is a schematic front view showing an example of a sheet forming a body portion of the self-standing packaging bag according to the first embodiment of the present invention. FIG. 4 is a schematic front view showing an example of a sheet forming the bottom of the self-standing packaging bag according to the first embodiment of the present invention.

FIG. 1 shows the appearance of the standing pouch 100 in which the contents 101 are housed in the bag body 1 (self-supporting packaging bag) of the present embodiment.
The standing pouch 100 is used to refill the contents of a container (hereinafter referred to as a target container) to be refilled (hereinafter referred to as a target container) (not shown). The content 101 can be poured out into the target container by opening the standing pouch 100 by two opening methods described later.
The target container is not particularly limited as long as the opening through which the content 101 can be poured is formed. However, it is more preferable that the target container is provided with a spout portion protruding from the outer periphery of the opening and a collection opening provided on the outside of the spout portion. A container having a spout portion and a collection opening is often used for accommodating contents to be weighed and used, such as a liquid detergent for clothing and a softener for clothing.

The type of the content 101 is not particularly limited. The content 101 may be a liquid, a fluid, a powder, a granular material, or the like. For example, examples of the content 101 include toiletry products such as shampoos, conditioners, liquid detergents and fabric softeners, foods such as cooking oils, sauces and instant coffee.
In the following, as an example, the case where the content 101 is a liquid will be described.

The standing pouch 100 is provided so as to be self-supporting by a bottom surface sealing portion 1c (edge portion) formed at the lower end portion. The upper end portion of the standing pouch 100 is provided with a second injection outlet portion 1E, which will be described later, formed in the bag body 1, and an upper end seal portion 1D sealed after the contents 101 are filled in the bag body 1. ..

As shown in FIG. 2, the bag body 1 is a bag-shaped container including a front sheet 1A (body portion), a rear surface sheet 1B (body portion), a bottom sheet 1C, and a spout member 2 (first spout port portion). Is.
In the bag body 1, the front surface sheet 1A, the rear surface sheet 1B, and the bottom surface sheet 1C are sealed with each other, so that the bottom surface sealing portion 1c, the side surface sealing portions 1b1, 1b2, and the spout sealing portion 1e (see FIG. 1). ) Is formed.
The front sheet 1A and the rear sheet 1B form an upper end portion and a body portion of the bag body 1.

The bottom surface sealing portion 1c is formed by sealing the front surface sheet 1A, the rear surface sheet 1B, and the bottom surface sheet 1C, respectively. The bottom sheet 1C is folded and arranged between the front sheet 1A and the rear sheet 1B, and is sealed to each other between the sealing portions of the front sheet 1A and the rear sheet 1B.

FIG. 3 shows an example of the outer shape of the front sheet 1A. The front sheet 1A constitutes one of the two side surfaces 1a in the body portion of the bag body 1 when the bag body 1 is arranged independently. The outer shape of the front sheet 1A is a substantially rectangular shape that is long in the hand direction as shown in the drawing. However, the upper left corner of the drawing is hollowed out, and the upper left corner of the drawing is formed with a shape protruding outward in a substantially U shape.
The outer shape of the rear sheet 1B is the same as that of the front sheet 1A. However, since the rear sheet 1B faces the front sheet 1A and is sealed to each other, the front and back configurations are opposite to those of the front sheet 1A.
Hereinafter, for the sake of simplicity, the configuration of the front sheet 1A will be mainly described, but the rear sheet 1B also has the same configuration except for the positional relationship between the front and back surfaces.

On the right side of the drawing, the peripheral edge portion Eb1 (shown with hatching) extending in the longitudinal direction of the front sheet 1A is sealed with a similar peripheral edge portion of the rear surface sheet 1B and the peripheral edge portion of the bottom sheet 1C, and is sealed in the longitudinal direction of the bag body 1. A side seal portion 1b1 extending linearly is formed.
Similarly, the peripheral edge portion Eb2 (shown with hatching) on the left side of the drawing is sealed with a similar peripheral edge portion of the rear surface sheet 1B and the peripheral edge portion of the bottom sheet 1C, and is linear from the lower end to the upper end of the bag body 1. A side seal portion 1b2 extending to is formed. However, the peripheral edge portion Eb2 is connected to the lower end portion of the peripheral edge portion Ee on the upper end side. The peripheral edge portion Ee extends along a substantially U-shaped outer shape of the front sheet 1A, and forms the spout seal portion 1e by being sealed with a similar peripheral edge portion of the rear surface sheet 1B.
At the upper end of the front sheet 1A, the peripheral edge Ed between the peripheral edges Ee and Eb1 forms a filling port for the bag 1 between similar peripheral edges Ed in the rear sheet 1B in the unsealed state. However, when the standing pouch 100 is formed after filling the contents 101, the peripheral edge portions Ed are sealed with each other to form the upper end seal portion 1D.

The lower end peripheral edge Ec (shown with hatching) between the peripheral edges Eb1 and Eb2 is sealed with the peripheral edge of the bottom sheet 1C to form the bottom surface sealing portion 1c.
The shape of the peripheral edge portion Ec forming the bottom surface seal portion 1c is such that the distance from the lower end of the front sheet 1A is the minimum at the center of the width in the lateral direction (horizontal direction in the drawing) and increases toward the peripheral edges Eb1 and Eb2 at both ends. Has.

As shown in FIG. 4, the outer shape of the bottom sheet 1C is a substantially rectangular shape having a long side equal to the short width of the front sheet 1A and the rear sheet 1B.
The peripheral edges eb1 and eb2 (shown with hatches) at both ends of the bottom sheet 1C in the longitudinal direction are sealed with the peripheral edges Eb1 and Eb2 of the front sheet 1A and the rear sheet 1B, respectively, and are respectively of the bag body 1. The side surface seal portions 1b1 and 1b2 at the lower end portion are formed.
The lower peripheral edges ecA and ecB (shown with hatches) between the peripheral edges eb1 and eb2 are sealed with the peripheral edge Ec of the front sheet 1A and the Ec of the rear sheet 1B, respectively, to form the bottom surface seal portion 1c. To do.
Similar to the peripheral portions Eb1 and Eb2, the peripheral portions eb1 and eb2 have the minimum distance from the lateral edge of the bottom sheet 1C at the center of the width in the longitudinal direction (horizontal direction in the drawing), and the peripheral portions eb1 and eb2 at both ends. It has a shape that increases toward. The peripheral portions eb1 and eb2 have a shape symmetrical with respect to the central axis O in the lateral direction of the bottom sheet 1C.
The elliptical or spindle-shaped region centered on the central axis O between the peripheral portions ecA and ecB is a portion forming the bottom surface 1i (bottom portion) of the bag body 1.

In the bottom sheet 1C, a fragile processed portion 1h is formed on the bottom surface 1i. The fragile processing portion 1h is formed at a portion of the bottom sheet 1C that covers the opening of the spout member 2 described later. The fragile processing portion 1h is used to open the standing pouch 100 by pushing it from the outside.
As shown in the example shown in FIG. 4, it is more preferable that the fragile processed portion 1h is formed in a circular range in the central portion of the bottom surface 1i. However, the formation range of the fragile processed portion 1h is not limited to this. For example, the fragile processing portion 1h may be formed anywhere on the bottom surface 1i as long as it is a position and region that can be exposed inside the opening of the spout member 2 described later.

Here, the configuration of the bottom sheet 1C in the layer thickness direction will be described.
FIG. 5 is a cross-sectional view taken along the line DD in FIG.

As the sheet material used for the bottom sheet 1C, an appropriate sheet material for the pouch container can be adopted. For example, as the sheet material, a multilayer film in which a base material layer, an adhesive layer, and a sealant layer are laminated in this order can be adopted. Further, as necessary, the sheet material is appropriately laminated with an intermediate layer for imparting gas barrier properties and improving various mechanical strengths, a printing layer for printing, and the like in addition to the above-mentioned layers. Can be made to.
As shown in FIG. 5, the bottom sheet 1C in the present embodiment includes a base material layer 3, a printing layer 4, and an adhesive layer 5 from the outer surface S1 side, which is the outer surface of the bag body 1, toward the inner surface S2. A laminated film in which the sealant layer 6 is arranged in this order is used.

The base material layer 3 includes, for example, vapor deposition of inorganic oxides such as silicon oxide and aluminum oxide on one side of a biaxially stretched polypropylene film, a biaxially stretched polyester film, a biaxially stretched nylon film, a moisture-proof cellophane, and a biaxially stretched polyester film. A gas barrier film in which a thin film layer and a gas barrier coating layer are laminated may be used.

The print layer 4 makes the bottom sheet 1C opaque, or forms characters, symbols, patterns, etc. that can be seen from the surface. The printing layer 4 is formed by printing ink on the base material layer 3. The printing method of the print layer 4 is not particularly limited.

As the adhesive layer 5, a dry-laminate adhesive that dry-laminates the base material layer 3 and the sealant layer 6 with the print layer 4 interposed therebetween is used.

The sealant layer 6 is used to join the front sheet 1A and the rear sheet 1B by heat sealing to form the side sealing portions 1b1, 1b2 and the bottom sealing portion 1c.
As the sealant layer 6, a polyolefin resin or a polyolefin resin film is used. Examples of the polyolefin resin include ethylene resins such as low density polyethylene resin, medium density polyethylene resin, linear low density polyethylene resin, ethylene / vinyl acetate copolymer resin, homopolypropylene resin, and propylene / ethylene random resin. Examples thereof include polymer resins, propylene / ethylene block copolymer resins, polypropylene resins such as polypropylene / α-olefin copolymer resins, and the like.

The configuration of the fragile machined portion 1h in the bottom sheet 1C is not particularly limited as long as the bottom sheet 1C can be easily broken by applying an external force from the outer surface S1 side. In the example shown in FIG. 5, the fragile processing portion 1h is composed of a large number of unit fragile portions H provided on the base material layer 3.
The unit fragile portion H is composed of a hole portion or a half-cut line that does not penetrate the bottom sheet 1C in the layer thickness direction. It is more preferable that the unit fragile portion H is formed from the outer surface S1 side through at least a part of the base material layer 3. In the example shown in FIG. 5, the unit fragile portion H penetrates the base material layer 3 in the layer thickness direction.

The plan-view shape of the unit fragile portion H is not particularly limited. For example, the plan view shape of the unit fragile portion H may be a circle, an ellipse, an oval, a polygon, a line segment, a straight line, a V shape, or the like.
It is more preferable that the unit fragile portion H is formed evenly dispersed in the plan view region S1h where the fragile processed portion 1h is formed. In this case, the fragile processing portion 1h has the same fragility regardless of the shape of the mating member that presses the fragile processing portion 1h.
However, the fragile processing portion 1h may have a strength distribution corresponding to the shape of the mating member that presses the fragile processing portion 1h. For example, when the mating member that presses the fragile machining portion 1h has an arcuate or circular tip in a plan view, the fragile machining portion 1h may be formed in an annular range where the tip of the mating member can abut. Good.

It is more preferable that the strength of the bottom sheet 1C in the fragile machined portion 1h is such that the bottom sheet 1C breaks when the user applies a pressing force of 100 N or less through the mating member.
For example, the strength of the bottom sheet 1C in the fragile processed portion 1h may be 2N or more and 10N or less as the piercing strength in the JIS Z1707 general standard for food packaging plastic films. For example, the piercing strength of the bottom sheet 1C in the fragile processed portion 1h is more preferably 5N or more and 7N or less.

Although not particularly shown, the front sheet 1A and the rear sheet 1B are also composed of a laminated film having at least a base material layer, an adhesive layer, and a sealant layer. For example, as the front sheet 1A and the rear sheet 1B, a laminated film having the same layer structure as the bottom sheet 1C except for the fragile processed portion 1h may be used. However, the layer structure of the laminated film of the front sheet 1A and the rear sheet 1B may be different from the layer structure of the bottom sheet 1C.
In the following, as an example, a case where the front sheet 1A and the rear sheet 1B are made of a laminated film having the same layer structure as the bottom sheet 1C will be described.

Next, the spout member 2 will be described.
FIG. 6 is a cross-sectional view taken along the line BB in FIG. 7 is a cross-sectional view taken along the line CC in FIGS. 7 and 2.

As shown in FIG. 2, the spout member 2 is a member that forms a first spout portion for pouring out the contents 101 on the bottom surface 1i of the bag body 1. The spout member 2 includes a cylindrical portion 2A (cylindrical portion) and a flange portion 2B.
The cylindrical portion 2A is composed of a cylinder having an inner peripheral surface 2a having an inner diameter of D2a. D2a is set to an appropriate size into which the tip of the target container can be inserted. For example, D2a may have a size such that the gap between the tip of the target container and the outer shape is 0 mm or more and 5 mm or less. More preferably, D2a has a size such that the gap between the tip of the target container and the outer shape is 2 mm or more and 3 mm or less.

The flange portion 2B is formed in a plate shape protruding laterally from the axial end portion of the cylindrical portion 2A. The flange portion 2B may be formed on the entire circumference of the cylindrical portion 2A, but in the example shown in FIG. 2, the flange portion 2B extends from both sides of the cylindrical portion 2A along the longitudinal direction of the bottom sheet 1C. For example, the width of each flange portion 2B may be changed such as gradually decreasing in the extending direction. In the example shown in FIG. 2, the width is the same as the outer shape of the cylindrical portion 2A except that the tip is rounded in a semicircular shape.
The length of each flange portion 2B from the center of the cylindrical portion 2A is L, respectively. As long as it is within the range of the bottom surface 1i, L can be an appropriate length that can be manually pressed by the user in the opening operation described later.

The material of the spout member 2 is not particularly limited as long as it can be adhered to the base material layer 3 of the bottom sheet 1C. For example, polypropylene, polyethylene, or the like may be used as the material of the spout member 2.

As shown in FIGS. 6 and 7, the spout member 2 is adhered to the outer surface of the bottom surface 1i on the mounting surface 2b of the flange portion 2B extending along the axial end surface of the cylindrical portion 2A. The bonding position of the spout member 2 is not particularly limited as long as the fragile machined portion 1h is exposed inside the inner peripheral surface 2a. It is more preferable that the fragile processed portion 1h is exposed to the entire inside of the inner peripheral surface 2a.
When the bag body 1 is folded, the spout member 2 is bonded so that the central axis in the extending direction of the flange portion 2B is coaxial with the central axis O of the bottom sheet 1C in that the spout member 2 can be made compact. It is more preferable to be done. The bonding position of the spout member 2 along the central axis O is more preferably the central position where the center of the inner peripheral surface 2a coincides with the center in the longitudinal direction of the bottom sheet 1C.

The bonding method of the spout member 2 can be appropriately selected depending on the material of the spout member 2 and the material of the bottom sheet 1C. For example, as a method of adhering the spout member 2, hot melt adhesion, adhesion with an adhesive, and the like can be mentioned.

Next, the overall configuration of the bag body 1 will be described.
In the bag body 1, the bottom sheet 1C is folded around the central axis O with the sealant layer 6 as the upper surface, and the sealant layers 6 of the peripheral portions ecA and ecB, and the peripheral portions of the front surface sheet 1A and the rear surface sheet 1B. The sealant layer 6 of Ec is attached to each other and heat-sealed with each other. As a result, as shown in FIGS. 6 and 7, a bottom surface sealing portion 1c extending downward in the drawing is formed on the outer edge of the bottom surface 1i.
The lower ends 1j of each bottom surface seal portion 1c in the extending direction are aligned on the same plane. Therefore, in the bag body 1, the lower end 1j of the bottom surface seal portion 1c can be placed on the flat mounting surface F.

The bottom surface seal portions 1c at both ends of the bottom sheet 1C in the longitudinal direction are heat-sealed so as to be sandwiched between the peripheral edges Eb1 and Eb2 of the front sheet 1A and the rear surface sheet 1B. As a result, each bottom surface sealing portion 1c is closed at each of the side surface sealing portions 1b1 and 1b2.
With such a configuration, as shown in FIG. 2, when the space between the bottom surface sealing portions 1c facing each other is increased, the bottom surface 1i having a planar view spindle shape is exposed inside the bottom surface sealing portion 1c.

As shown in FIG. 7, the bottom surface 1i extends in a boat shape that opens upward when the bottom surface sheet 1C is cross-sectioned in the longitudinal direction. However, since the spout member 2 is attached to the lower surface of the bottom surface 1i, the central portion of the bottom surface 1i is lifted upward by the spout member 2 in contact with the mounting surface F. As a result, in the present embodiment, the lower end 1j and the tip 2c of the cylindrical portion 2A are in contact with the mounting surface F, respectively. In this case, since the spout member 2 is surrounded by the bottom surface sealing portion 1c on the mounting surface F, it cannot be seen from the outside when the front sheet 1A, the rear surface sheet 1B, and the bottom sheet 1C are opaque. As a result, when the standing pouch 100 is displayed in the store in an independent state, the spout member 2 can be made inconspicuous, so that the bag body 1 is excellent in store displayability.

When the bag body 1 is lifted from the mounting surface F, the bottom surface 1i is pulled downward by the weight of the spout member 2 as shown by the alternate long and short dash line in FIG. At this time, if the contents 101 are filled inside the bag body 1, the tension of the bottom surface 1i increases due to the weight of the contents 101. The spout member 2 descends to a position where the resultant force of tension and gravity are balanced. As a result, since the spout member 2 is lowered from the lower end 1j, the spout member 2 protrudes from the side of the bag body 1 and can be visually recognized.

In this way, when the bag body 1 and the standing pouch 100 are self-supporting, the spout member 2 is interposed between the mounting surface F and the bottom surface 1i, so that the bottom surface 1i becomes the mounting surface F or the mounting surface F. Contact with the upper object is prevented. In particular, since the fragile machined portion 1h inside the cylindrical portion 2A is supported upward by the height of the cylindrical portion 2A by the cylindrical portion 2A, it is prevented from being damaged by contact with an object on the mounting surface F. .. Further, since the fragile processed portion 1h does not come into contact with the mounting surface F, dirt on the mounting surface F is prevented from adhering.
Further, even when the standing pouch 100 falls on the mounting surface F, since the bottom surface 1i is reinforced by the flange portion 2B, it is possible to prevent the bottom surface 1i from being torn and the contents 101 from leaking.
In particular, since the cylindrical portion 2A extends around the fragile machining portion 1h, it is difficult for an external force to directly act on the fragile machining portion 1h when it is dropped. As a result, it is possible to prevent the fragile machined portion 1h from being torn due to dropping.

As shown in the examples shown in FIGS. 6 and 7 described above, the spout member 2 is in contact with the mounting surface F together with the lower end 1j when the bag 1 or the standing pouch 100 is self-supporting, and when the bag 1 is lifted, the spout member 2 It is more preferable that the tip is lowered below the lower end 1j.
In order to satisfy such a condition, assuming that the height of the spout member 2 is h2, at least h2 is a virtual straight line extending from the outer edge of the spout member 2 toward the lower end 1j along the surface of the bottom sheet 1C. Must be less than or equal to the length of. For example, when the length from the outer edge of the spout member 2 to the outer edge of the bottom surface 1i is d, and the height of the bottom surface sealing portion 1c at the outer edge portion is h1c, it is necessary that at least d + h1c ≧ h2.
However, if h1c is larger than h2, the spout member 2 may float from the mounting surface F when tension is generated on the bottom surface 1i due to the weight of the contents 101, so h1c is h2 or less. Is more preferable.

For example, if the height of the spout member 2 is too high, the spout member 2 always protrudes below the bottom surface seal portion 1c, so that the spout member 2 becomes self-supporting and the self-supporting stability is improved. become worse.
For example, if the height of the spout member 2 is too low, the spout member 2 does not protrude below the bottom surface seal portion 1c even if the bag body 1 is lifted. In this case, since the position of the spout member 2 cannot be visually recognized, the opening operation described later may not be smoothly performed.

The fragile processing portion 1h is a seal that closes the opening of the cylindrical portion 2A of the spout member 2. Therefore, when the fragile processed portion 1h is crushed, the cylindrical portion 2A forms an opening communicating with the inside of the bag body 1.
For example, when the fragile processing portion 1h is crushed while the spout member 2 is facing downward, the content 101 in the bag body 1 is ejected from the cylindrical portion 2A by its own weight.
Therefore, the spout member 2 constitutes a first spout portion arranged outside the bottom surface 1i.

As shown in FIG. 1, in the bag body 1, above the bottom surface sealing portion 1c, the peripheral portions Eb1, Eb2, and Ee of the front sheet 1A and the rear surface sheet 1B are heat-sealed, and the side surface sealing portions 1b1, 1b2 are heat-sealed. And the spout seal portion 1e is formed.
At the upper end of the bag body 1, a filling port, which is an opening surrounded by each unsealed peripheral edge Ed, is formed between the side seal portion 1b1 facing the lateral direction and the spout seal portion 1e. There is.
However, since the bag body 1 constituting the standing pouch 100 is drawn in FIG. 1, the filling port is closed by heat-sealing each peripheral edge portion Ed, and the upper end seal portion 1D is formed.

In the bag body 1, the portion surrounded by the spout seal portion 1e constitutes the second spout portion 1E provided above the bottom surface 1i.
In the second spout portion 1E, each unsealed portion of the front sheet 1A and the rear sheet 1B surrounded by the spout seal portion 1e is embossed to form a tubular embossed portion 1d as a whole. ing. For example, a flow path holding member that holds the shape of the pipe may be arranged inside the embossed portion 1d. However, the embossed portion 1d and the flow path holding member may be omitted as long as the pouring of the content 101 is not hindered.
The second spout portion 1E is provided on the surfaces of the spout seal portion 1e and the embossed portion 1d, with a plurality of half-cut lines 1g provided at positions that are substantially aligned on the front and back sides, and at both ends of the half-cut line 1g. The notch portion 1f is provided.

In such a second spouting port portion 1E, the content 101 in the bag body 1 is poured out after opening the spouting port sealing portion 1e portion on the convex tip side along the half-cut line 1g. A spout can be formed.

Next, an example of a method for manufacturing the bag body 1 will be described.
8 and 9 are process explanatory views showing an example of a method for manufacturing a self-standing packaging bag according to the first embodiment of the present invention.

In order to manufacture the bag body 1, a laminated film forming the front sheet 1A, the rear sheet 1B, and the bottom sheet 1C is prepared. At this time, each laminated film may be cut according to the outer shape of the front sheet 1A, the rear surface sheet 1B, and the bottom sheet 1C, or may have a shape larger than each outer shape. Hereinafter, for the sake of simplicity, all the laminated films are simply referred to as a front sheet 1A, a rear sheet 1B, and a bottom sheet 1C.
However, the front sheet 1A and the rear sheet 1B are preliminarily formed with an embossed portion 1d, if necessary. A fragile processed portion 1h is formed in advance on the bottom sheet 1C by, for example, laser processing.
After that, as shown in FIG. 8, the bottom sheet 1C is sandwiched between the front sheet 1A and the rear sheet 1B in a state in which the bottom sheet 1C is folded with its central axis O as a folding line and the sealant layer 6 faces outward. ..
At this time, the front sheet 1A and the rear sheet 1B are arranged so that their respective sealant layers 6 face the sealant layer 6 of the bottom sheet 1C.
After that, the peripheral edges ecA and ecB of the bottom sheet 1C and the peripheral edges Ec of the front sheet 1A and the rear sheet 1B are respectively bonded by heat sealing to form each bottom surface sealing portion 1c.
After that, the peripheral edges Eb1 and Eb2 of the front sheet 1A and the rear sheet 1B, including the folded portion of the bottom sheet 1C, are adhered by heat sealing to form the side sealing portions 1b1 and 1b2.
After that, if necessary, the outer shape is shaped to form a notch portion 1f and a half-cut line 1g.
In this way, the bag body 11 having no spout member 2 is formed.

After that, as shown in FIG. 9, the bottom surface seal portions 1c are separated from each other in the facing direction to widen the bottom surface 1i of the bag body 11. After that, with the fragile machined portion 1h exposed inside the inner peripheral surface 2a of the spout member 2 and the flange portion 2B facing the longitudinal direction of the bottom sheet 1C, the mounting surface 2b and the bottom surface 1i of the spout member 2 Adheres to the outer surface S1 of. As the bonding method, for example, bonding with a hot melt adhesive is used. At the time of bonding, a holding jig or the like may be arranged in the bag body 11 in order to keep the bottom surface 1i of the bonding region flat.
When the spout member 2 is adhered to the bottom surface 1i in this way, the bag body 1 as shown in FIGS. 2, 6 and 7 is manufactured.

In order to form the standing pouch 100 from the bag body 1, the contents 101 are filled from the filling port opened at the upper part of the bag body 1, and then the peripheral edges Ed facing each other are heat-sealed and sealed. As a result, the upper end seal portion 1D is formed, and the standing pouch 100 as shown in FIG. 1 is manufactured.

The action of the bag body 1 of the present embodiment will be described focusing on the action of the content 101 in the standing pouch 100 at the time of pouring.
FIG. 10 is a schematic exploded perspective view showing an example of the spout portion of the container to be refilled. FIG. 11 is a plan view of the container to be refilled. FIG. 12 is a cross-sectional view taken along the line EE in FIG. 13 to 15 are schematic views showing an example of how to use the self-standing packaging bag according to the first embodiment of the present invention.

In the bag body 1, a spout member 2 is provided on the bottom surface 1i, and a second spout port 1E is provided on the upper portion. Therefore, the content 101 can be dispensed by opening at least one of the fragile processed portion 1h that closes the spout member 2 and the half-cut line 1 g of the second spout portion 1E.

When the content 101 is poured out from the spout member 2, the container for filling the content 101 is not particularly limited as long as it has a hard protrusion at the tip. For example, it may be a container having a cylinder or a nozzle having a circular opening at the tip.
However, in terms of facilitating the entry and exit of air into and out of the container, a container having a curved spatula shape or an spout portion having an opening diagonally crossing the tip end portion of the cylinder is more preferable. Further, it is particularly preferable that the outer periphery of the spout portion is provided with a collection opening capable of collecting the contents flowing on the outer periphery of the spout portion inside the container. Hereinafter, an example of such a particularly preferable container will be described.
The shape of the tip of such a container varies depending on the use of the container, the manufacturer, and the like, but for example, the shape of the container 50 shown in FIGS. 10 to 12 is widely used.

Hereinafter, the configuration of the container 50 will be described.
As shown in FIGS. 10 and 11, the container 50 includes a bottle 51 and a tip cap 52. Since the container 50 covers the tip cap 52, it is often provided with a measuring cap (not shown), but in the case of refilling, the measuring cap is not used.
The shape of the bottle 51 is not particularly limited as long as it is a container that can accommodate the contents 101 and can maintain a constant shape even if the contents 101 are not filled. However, the upper end of the bottle 51 is provided with a substantially cylindrical mouth portion 51a having a male screw portion 51b on the outer peripheral portion.

As shown in FIG. 12, the tip cap 52 has a tubular portion 52a on the outer peripheral portion. The tubular portion 52a is not limited to a cylinder, but in the example shown in FIG. 12, it is a cylinder centered on the central axis C. The inner peripheral surface of the end portion (lower end portion in the drawing) of the tubular portion 52a has a female screw portion 52b screwed with the male screw portion 51b. In the tubular portion 52a, a cylindrical tip outer tubular portion 52j is formed at an end portion (upper end portion in the drawing) opposite to the female screw portion 52b.
Inside the tip outer cylinder portion 52j, a plate-shaped insole portion 52c orthogonal to the tip outer cylinder portion 52j projects inward in the radial direction. At the inner edge of the insole portion 52c, a spout portion 52d is erected in the axial direction of the tip outer cylinder portion 52j.

The spout portion 52d has an outer shape obtained by diagonally cutting out a part of the side surface of a cylinder coaxial with the tip outer cylinder portion 52j. The tip 52e of the spout portion 52d extends in a circular arc shape in a plan view, and is formed of a plane orthogonal to the central axis C of the inner peripheral surface 52g of the spout portion 52d. The arc shape of the tip 52e in a plan view is an arc having a central angle of less than 180 °.
The height of the spout portion 52d from the insole portion 52c is such that the tip 52e from the insole portion 52c projects toward the tip side of the tip surface of the tip outer cylinder portion 52j.
The inclined portion 52f extends from both ends in the circumferential direction of the tip 52e toward the base end side (lower side in the drawing) of the spout portion 52d. A slit 52h (recovery opening) that penetrates the spout portion 52d in the axial direction is formed at the base end portion of the inclined portion 52f.
As shown in FIG. 11, the base end portion of the slit 52h communicates with the U-shaped through hole 52i (recovery opening) penetrating the insole portion 52c in the thickness direction.

With such a configuration, the cross-sectional shape of the spout portion 52d orthogonal to the central axis C is a C-shape that opens in the slit 52h at the base end portion. The cross-sectional shape of the spout portion 52d becomes C-shaped with the inclined portion 52f as the opening end portion toward the tip end 52e. The opening width in the cross section of the spout portion 52d gradually increases and then reaches the maximum in the semicircular cross section. Further toward the tip 52e side, the cross-sectional shape of the spout portion 52d changes to an arc-shaped cross section having a central angle of less than 180 °, and gradually approaches the shape of the tip 52e.
In the example shown in FIG. 11, the shapes of the spout portion 52d, the slit 52h, and the through hole 52i are plane symmetric with respect to the plane S passing through the central axis C.
When viewed from the normal direction of the plane S, the shape of the inclined portion 52f is an inverted S shape (when viewed from the front to the back of the paper surface of FIG. 12) or an S shape (when viewed from the back to the back of the paper surface of FIG. 12). When looking at it).

The tip 52e and each inclined portion 52f form a substantially elliptical opening as a whole.
When the contents are poured out from the container 50, the tip 52e is arranged on the lower side, and the container 50 is held so that the central axis C is inclined with respect to the horizontal plane. As a result, the contents are extracted to the outside by moving toward the tip 52e on the inner peripheral surface 52g of the spout portion 52d. The contents are guided along the inner peripheral surface 52 g. Air flows into the bottle 51 from above the contents through the opening of the spout 52d, the slit 52h, and the through hole 52i. Therefore, the pulsation of the contents due to the inflow and outflow of air is suppressed, and the injection amount of the contents is stable.
When the container 50 is erected after pouring out the contents, a part of the contents in the vicinity of the tip 52e hangs outward along the outer peripheral surface of the spout portion 52d, and a dripping is formed.
When the dripping contents increase on the insole 52c, the contents fall into the tubular portion 52a below the insole 52c through the slit 52h and the through hole 52i. As a result, the dripping contents are collected inside the bottle 51.

In order to pour the contents 101 from the spout member 2 of the standing pouch 100 into such a container 50, the container 50 is erected with the tip cap 52 facing upward as shown in FIG.
The standing pouch 100 is held on the container 50 by an operator with the spout member 2 facing downward. At this time, since the bottom surface 1i is pressed downward by the weight of the content 101, at least a part of the cylindrical portion 2A of the spout member 2 projects downward from the lower end 1j of the bag body 1. Therefore, the position of the cylindrical portion 2A can be easily visually recognized from the side by the operator.
The operator arranges the cylindrical portion 2A at a position where it can be inserted inside the tip outer cylinder portion 52j and outside the spout port 52d, and moves the cylindrical portion 2A toward the tip portion of the tip cap 52. To do.

As shown in FIG. 14, when the spout member 2 is placed on the spout portion 52d, the operator pushes the spout member 2 toward the tip cap 52. When pushing in, for example, the flange portion 2B may be pushed down with a finger f or the like. Specifically, a finger f is placed on the side surface of the standing pouch 100 to press it toward the mounting surface 2b of the flange portion 2B. When the content 101 is a liquid, the side surface is deformed by pressing, so that the flange portion 2B is sandwiched between the front sheet 1A or the rear sheet 1B of the standing pouch 100 and the bottom sheet 1C by the finger f. The mounting surface 2b can be pressed. As a result, the flange portion 2B is pushed down.
When the content 101 is powder or the like, the flange portion 2B can be pushed down through the powder or the like by pressing the upper portion of the standing pouch 100 downward by an operator or the like.

When the flange portion 2B is pushed down, the tip 52e of the spout portion 52d presses the fragile machined portion 1h. As a result, as shown in FIG. 15, a part of the fragile machined portion 1h is torn, and a hole HL is formed on the bottom surface 1i inside the inner peripheral surface 2a.
The content 101 passes through the hole HL by its own weight, and most of the content flows into the bottle 51 from the inside of the inner peripheral surface 52 g of the spout portion 52d through the mouth portion 51a.
When the cylindrical portion 2A is provided at the center of the boat-shaped bottom surface 1i, the hole HL is formed at the lowest position on the bottom surface 1i. In this case, since the content 101 is directed toward the hole HL along the bottom surface 1i by gravity, the content 101 easily flows into the hole HL. As a result, the content 101 is less likely to remain in the standing pouch 100.

On the other hand, the content 101 also flows in the gap between the inner peripheral surface 2a of the cylindrical portion 2A and the spout portion 52d. The content 101 flows on the insole 52c. When the content 101 moves in the insole portion 52c in the circumferential direction, the content 101 flows into the mouth portion 51a through the slit 52h and the through hole 52i.
In this way, the content 101 flows into the bottle 51 via the spout portion 52d or inside the tip outer cylinder portion 52j, and then passes through the slit 52h and the through hole 52i. Be poured out.

The size of the hole HL of the spout member 2 depends on the shape of the spout portion 52d, but the maximum size is the same as the outer shape of the spout portion 52d, and according to the shape of the widely used spout portion 52d. The size is at least about a semicircle having an outer diameter of the spout portion 52d. Therefore, the content 101 can be quickly extracted.
Further, even if the inner diameter of the cylindrical portion 2A is larger than the outer diameter of the spout portion 52d, it can wrap around the slit 52h and the through hole 52i from the outside of the spout portion 52d and pour into the bottle 51. If the portion 52d has a size that can be inserted inside the cylindrical portion 2A, the contents 101 can be dispensed even if the outer diameter of the spout portion 52d changes.

The example of pouring out the contents 101 via the spout member 2 has been described above. For example, when the outer diameter of the spout portion 52d of the container 50 is larger than the inner diameter of the inner peripheral surface 2a of the cylindrical portion 2A. It is difficult to dispense as described above. Also in this case, according to the standing pouch 100 of the present embodiment, since the bag body 1 has the second injection outlet portion 1E, it can be dispensed from the second injection outlet portion 1E. Specifically, the second injection outlet portion 1E is opened by breaking the half-cut line 1g starting from the notch portion 1f in the second injection outlet portion 1E. After that, the content 101 is poured out toward the opening formed in the second spout portion 1E toward the opening of the spout portion 52d.
In this case, since the opening of the spout portion 52d is larger than the opening of the cylindrical portion 2A, it is possible to easily pour into the spout portion 52d from the opening of the second spout portion 1E. Even if the content 101 spills to the outside of the spout 52d, the spilled content 101 wraps around the slit 52h and the through hole 52i and flows into the bottle 51 as described above.

Even when the content 101 can be poured out from the spout member 2, the second spout portion 1E may be opened in advance. In this case, after the hole HL is formed, the opening of the second injection port portion 1E serves as an air hole, so that the content 101 flows down from the injection port member 2 more smoothly.

As described above, since the standing pouch 100 is formed of the bag body 1 having the spout member 2, the content 101 can be quickly pushed into the container 50 only by pushing the spout portion 52d into the cylindrical portion 2A. Can be filled in. Therefore, the bag body 1 of the present embodiment is a self-standing packaging bag in which the contents can be easily poured into the target container.
Further, since the bag body 1 of the present embodiment further includes the second injection port portion 1E, the contents 101 can be filled even in a container that cannot be dispensed from the injection outlet member 2. Therefore, the bag body 1 has high versatility.

Further, according to the bag body 1 of the present embodiment, the lateral width of the flange portion 2B is equal to or less than the outer diameter of the cylindrical portion 2A, and the longitudinal direction of the flange portion 2B coincides with the longitudinal direction of the bottom surface 1i. Therefore, in the bag body 1 before filling the contents 101, the bottom surface 1i can be folded to the same extent as the short width of the flange portion 2B. As a result, the unfilled bag body 1 can be made compact.

[First modification]
Next, the self-supporting packaging bag of the modified example (first modified example) of the first embodiment will be described.
FIG. 16 is a schematic bottom view showing a self-standing packaging bag of a modified example (first modified example) of the first embodiment of the present invention.

As shown in FIG. 16, the bag body 21 (self-supporting packaging bag) of this modified example is a spout member 22 (first spout port portion) instead of the spout member 2 of the bag body 1 of the first embodiment. To be equipped. The bag body 21 can be used in place of the bag body 1 of the standing pouch 100 in the first embodiment.
Hereinafter, the points different from the first embodiment will be mainly described.

The spout member 22 includes a flange portion 22B instead of the flange portion 2B of the spout member 2.
The flange portion 22B differs only in outer shape from the flange portion 2B.
The outer shape of the flange portion 22B in a plan view extends laterally from the cylindrical portion 2A even in the lateral direction. The extending shape of the flange portion 22B in the lateral direction is not particularly limited. For example, in the example shown in FIG. 16, the width of the flange portion 2B in the lateral direction is maximum at the center of the cylindrical portion 2A, and gradually decreases from the center toward both ends in the longitudinal direction. Therefore, the plan view shape of the flange portion 22B shown in FIG. 16 is a rhombic shape in which the cylindrical portion 2A is at the center and each apex is rounded.
However, the plan view shape of the flange portion 22B is not limited to this, and may be, for example, an elliptical shape, a cross shape, a radial shape, a mesh shape, or the like.

According to the bag body 21 of the present modification, since it has the cylindrical portion 2A and the fragile processed portion 1h as in the first embodiment, when the standing pouch is formed, the contents are the same as in the first embodiment. The object 101 can be poured into the target container. Therefore, the bag body 21 of this modification is a self-standing packaging bag in which the contents can be easily poured into the target container.
Further, according to the present modification, the flange portion 22B extends outward from the entire outer circumference of the cylindrical portion 2A. Therefore, when the fragile machined portion 1h is opened, the portion where the flange portion 22B can be pressed increases, so that the operator can easily press the flange portion 22B. Therefore, it becomes easier to open the fragile processing portion 1h.

[Second modification]
Next, the self-supporting packaging bag of the modified example (second modified example) of the first embodiment will be described.
FIG. 17 is a schematic bottom view showing a self-standing packaging bag of a modified example (second modified example) of the first embodiment of the present invention.

As shown in FIG. 17, the bag body 31 (self-supporting packaging bag) of the present modification is a spout member 32 (first spout port portion) instead of the spout member 2 of the bag body 1 of the first embodiment. To be equipped. The bag body 31 can be used in place of the bag body 1 of the standing pouch 100 in the first embodiment.
Hereinafter, the points different from the first embodiment will be mainly described.

The spout member 32 includes a flange portion 32B instead of the flange portion 2B of the spout member 2.
The flange portion 32B differs only in outer shape from the flange portion 2B. The outer shape of the flange portion 32B in a plan view is a circular shape concentric with the cylindrical portion 2A.

According to the bag body 31 of the present modification, since it has the cylindrical portion 2A and the fragile processed portion 1h as in the first embodiment, when the standing pouch is formed, the contents are the same as in the first embodiment. The object 101 can be poured into the target container. Therefore, the bag body 31 of this modified example is a self-standing packaging bag in which the contents can be easily poured into the target container.
Further, according to this modification, the flange portion 32B extends evenly from the entire outer circumference of the cylindrical portion 2A. Therefore, when the fragile machined portion 1h is opened, the width of the flange portion 32B is uniform around the cylindrical portion 2A, so that the flange portion 32B can be pressed in the same manner even if the pressing position is changed to the circumferential direction. Therefore, since the portion that is easily pressed is not specified, the operator can immediately press the flange portion 32B without selecting or searching for a location that is easy to press. Therefore, the workability at the time of opening the fragile processing portion 1h is improved.

[Second Embodiment]
Next, the self-supporting packaging bag of the second embodiment of the present invention will be described.
FIG. 18 is a schematic front view showing an example of a self-standing packaging bag according to a second embodiment of the present invention.

FIG. 18 shows the appearance of the standing pouch 130 in which the content 101 is housed in the bag body 41 (self-supporting packaging bag) of the present embodiment.
The standing pouch 130 is used to refill the contents of the target container such as the container 50 described in the first embodiment.
The bag body 41 of this modification includes a bag body 42 instead of the bag body 11 in the first embodiment. Hereinafter, the points different from the first embodiment will be mainly described.

In the bag main body 42, the second injection outlet portion 1E in the bag main body 11 is deleted, and the side seal portion 1b2 is extended to the upper end. Therefore, the peripheral edge portion Ed of the bag main body 42 is opened in the range of the entire width between the side surface sealing portions 1b1 and 1b2. The upper portion of the standing pouch 130 is sealed by an upper end seal portion 1D formed by heat-sealing each peripheral edge portion Eb to each other.

Such a bag body 41 is manufactured in the same manner as the bag body 1 of the first embodiment except that the outer shapes of the front sheet 1A and the rear surface sheet 1B in the first embodiment are changed so that the half-cut line 1 g is not formed. it can.

According to the bag body 41 of the present embodiment, since it has the cylindrical portion 2A and the fragile processed portion 1h as in the first embodiment, when the standing pouch 130 is formed, the same as in the first embodiment, The content 101 can be poured out from the spout member 2 into the target container. Therefore, the bag body 41 of the present embodiment is a self-standing packaging bag in which the contents can be easily poured into the target container.
This embodiment is an example in the case where the bag body does not have the second injection outlet portion.

In each of the above-described embodiments and modifications, the case where the tubular portion of the first injection outlet portion is formed of a cylinder has been described. However, the tubular portion is not limited to a cylinder. For example, the tubular portion may have a cross-sectional shape such as an ellipse or a polygon. Further, the inner peripheral surface and the outer peripheral surface of the tubular portion may be a smooth surface or an uneven surface.
Further, the size of the opening cross section of the tubular portion may change in the axial direction. For example, the opening cross section of the tubular portion may be reduced or enlarged from the base end side to the tip end side.

In each of the above-described embodiments and modifications, the case where the bag body of the self-supporting packaging bag is a pouch bag has been described. However, the bag body is not limited to the pouch bag as long as it has a body portion and a bottom portion and can stand on its own with the bottom portion facing downward. For example, as the bag body, a gusset bag, a standing pouch, or the like may be used.

In each of the above embodiments and each modification, the case where the fragile processing portion 1h is composed of a large number of unit fragile portions H has been described. However, the fragile processed portion is not limited to the configuration having the unit fragile portion H as long as it has a strength that can easily break through the bottom surface 1i. For example, the fragile machined portion may be formed of a half-cut line or a half-cut groove extending into an appropriate shape such as radial, concentric, or mesh-like.

In each of the above embodiments and each modification, the case where the target container has a spout portion having an opening formed so as to diagonally cross the tip end portion of the cylinder and a recovery opening has been described.
However, when the cylindrical portion 2A fits tightly into the outer shape of the spout portion of the target container, it can be refilled even if there is no collection opening.
For example, even if the spout portion of the target container is a cylinder having a diameter smaller than the inner diameter of the cylindrical portion 2A, if it has a collection opening, it is possible to refill the contents without spilling in the same manner as described above. Become.

[Example]
The embodiment is an embodiment corresponding to the first embodiment.
In Example 1, the front sheet 1A, the rear sheet 1B, and the bottom sheet 1C all used the same layer structure.
As the base material layer 3, a 15 μm biaxially stretched nylon film was used. A printing layer 4 was formed on the base material layer 3 by gravure printing.
As the sealant layer 6, 120 μm linear low density polyethylene (LLDPE) was used.
As the adhesive layer 5, an adhesive for dry laminating was used.
In the fragile processing portion 1h, a large number of unit fragile portions H composed of linear holes having a length of 1 mm were formed in a houndstooth arrangement with a pitch of 1 mm. Each unit fragile portion H was formed by a CO ₂ laser to a depth that penetrated the base material layer 3 and did not penetrate the printing layer 4.
The shape of the spout member 2 is such that the inner diameter of the cylindrical portion 2A is 23 mm, the outer diameter is 26 mm, and the height is 25 mm. The longitudinal width of the flange portion 2B (the width including the cylindrical portion 2A) was 40 mm, and the lateral width was 26 mm.
Polypropylene was used as the material of the spout member 2.

The bag body 11 of Example 1 was formed in a size capable of accommodating 360 g of liquid detergent. The bag main body 11 was manufactured by forming a fragile processed portion 1h on the bottom sheet 1C in advance, and then heat-sealing each peripheral edge portion of the front sheet 1A, the rear surface sheet 1B, and the bottom sheet 1C.
After that, the spout member 2 was adhered to the outside of the bottom surface 1i of the bag body 11 with a hot melt adhesive. As a result, the bag body 1 of Example 1 was manufactured.
After filling the bag body 1 with 360 g of liquid detergent, the upper part of the bag body 1 was heat-sealed to form the upper end seal portion 1D, and the standing pouch 100 was manufactured.

[Comparative Examples 1 and 2]
The bag body of Comparative Example 1 was manufactured in the same manner as in Example except that the fragile processed portion 1h was not formed.
The bag body of Comparative Example 2 was manufactured in the same manner as in Example except that the spout member 2 was not attached. The bag body of Comparative Example 2 had the same configuration as the bag body 11 of the example.
Similar to Examples, the bags of Comparative Examples 1 and 2 were filled with 360 g of liquid detergent, and then the upper part of the bag was heat-sealed to produce standing pouches 100 of Comparative Examples 1 and 2.

[Evaluation]
The evaluations of Examples and Comparative Examples 1 and 2 were performed based on the workability of the refilling work using the respective standing pouches.
As the container to be refilled, a plastic bottle container having the same shape as the above-mentioned container 50 and having a capacity of 480 mL was used. The outer diameter of the spout portion 52d was 20 mm, and the height of the spout portion 52d from the insole portion 52c was 40 mm.
Specifically, the push-through property at the first injection port, the speed of refilling, the leakage during refilling, and the stability of refilling were evaluated.
The evaluation results are shown in [Table 1] below.

In the push-pullability evaluation, it was evaluated whether or not the fragile processed portion 1h of each bag body was pushed by the spout portion 52d while measuring the force with which the operator pressed the standing pouch. However, in Comparative Example 1 which does not have the fragile machined portion 1h, the spout portion 52d was inserted inside the cylindrical portion 2A and evaluated by whether or not the bottom surface was torn.
In [Table 1], the evaluation results are indicated by ○ (pushed) and × (not pushed).

In the refill speed evaluation, the time required for the worker to refill the entire amount of liquid detergent in each standing pouch into a plastic bottle container was measured. When it was 20 seconds or less, it was judged to be good (good, "○" in [Table 1]), and when it exceeded 20 seconds, it was judged to be bad (no good, "x" in [Table 1]).

In the liquid leakage evaluation at the time of refilling, it was observed whether the liquid detergent could be filled without spilling from the plastic bottle container.
In [Table 1], the evaluation results are indicated by ○ (not spilled) and × (spilled).

In the refill stability evaluation, it was evaluated whether the operator could stably hold the standing pouch at the time of refilling.
In [Table 1], the evaluation results are indicated by ◯ (stable) and × (unstable).

[Evaluation results]
As shown in [Table 1], in the crushability evaluation, the examples were crushed, whereas in Comparative Examples 1 and 2, none of them were crushed. In particular, in Example 1, when the spout member 2 was pressed with 50 N, the fragile processed portion 1h was crushed, and the liquid detergent could be poured out.
On the other hand, in Comparative Example 1, the bottom surface was not crushed even when pressed at 100 N. In Comparative Example 2, since the spout member 2 is not provided, it is difficult to press the spout portion 52d against the fragile machined portion 1h, and even if it is pressed, it is difficult to apply a pressing force to the fragile machined portion 1h. ..

In the speed evaluation, the example was judged to be good because the refilling was completed within 20 seconds. On the other hand, in Comparative Examples 1 and 2, since the injection from the spout member 2 or the fragile processing portion 1h could not be performed, the second spout portion 1E was opened and dispensed. However, it took more than 20 seconds because it had to be extracted little by little in order to prevent it from spilling from the tip outer cylinder portion 52j.

In the liquid leakage evaluation, in the case of the example, the liquid detergent did not spill at all, whereas in Comparative Examples 1 and 2, a small amount of spill occurred. This is because, in the cases of Comparative Examples 1 and 2, when the injection amount was increased in an attempt to shorten the refilling time, the liquid detergent was ejected by the air pushed out from the plastic bottle container. It was possible that the liquid leakage could be eliminated by reducing the injection amount, but it is thought that the refilling work time will be even longer.
In the case of the embodiment, most of the liquid detergent passes through the inside of the cylindrical portion 2A and flows into the plastic bottle container, and even if air is pushed out, it is covered by the cylindrical portion 2A, and the cylindrical portion 2A is covered with the cylindrical portion 2A. Since it has entered the inside of the tip outer cylinder portion 52j, the liquid detergent did not leak to the outside of the tip cap 52.

In the stability evaluation, since the operator pressed the spout member 2 against the plastic bottle container in the embodiment, the standing pouch was held integrally with the placed plastic bottle container. For this reason, the standing pouch was stable without wobbling. On the other hand, in Comparative Examples 1 and 2, it was necessary for the operator to hold the standing pouch in his hand above the plastic bottle container and perform pouring. When the standing pouch was opened, it easily deformed according to the holding force, so that it could not be held stably.
Further, since the outflow amount of the liquid detergent changes depending on the holding position, the holding force, and the remaining amount of the liquid detergent, the flow of the liquid detergent can be accurately positioned at the opening of the spout 52d, and the pouring amount can be adjusted. The holding state of the standing pouch had to be constantly fine-tuned for stability. Therefore, it was difficult to hold the standing pouch in a stable state during the refilling operation.

Although the preferred embodiments and modifications of the present invention have been described above together with the examples, the present invention is not limited to the embodiments, the modifications, and the examples. Configurations can be added, omitted, replaced, and other modifications without departing from the spirit of the present invention.
Further, the present invention is not limited by the above description, but is limited only by the appended claims.

1, 21, 31, 41 bags (self-supporting packaging bag)
1A Front seat (body part)
1b1, 1b2 Side seal part 1B Rear seat (body part)
1c Bottom seal (edge)
1C Bottom sheet 1D Upper end seal part 1e Outlet seal part 1E Second injection outlet part 1h Fragile processing part 1i Bottom (bottom)
1j Lower end 2, 22, 32 Inlet member (1st injection outlet)
2a Inner peripheral surface 2A Cylindrical part (cylindrical part)
2B, 22B, 32B Flange part 3 Base material layer 4 Printing layer 5 Adhesive layer 6 Sealant layer 11, 42 Bag body 50 Container 52 Tip cap 52d Injection port 52h Slit 52i Through hole 52j Tip outer cylinder 100, 130 Standing pouch 101 Contents H unit Vulnerable part HL hole

Claims (6)

A self-supporting packaging bag that has a body and a bottom and can stand on its own with the bottom facing down.
A first note having a tubular portion arranged outside the bottom portion and extending in a direction intersecting the bottom portion, and a flange portion protruding laterally from the tubular portion and joined to the outer surface of the bottom portion. Exit and
A fragile processed portion formed inside the tubular portion without penetrating in the thickness direction of the bottom portion,
A self-supporting packaging bag. The flange portion is
Long extending in the longitudinal direction of the bottom,
The self-supporting packaging bag according to claim 1. The width of the flange portion in the lateral direction is
It is equal to or less than the outer width of the tubular portion in the lateral direction.
The self-supporting packaging bag according to claim 1 or 2. An edge portion extending below the bottom portion is provided on the outer peripheral portion of the bottom portion.
The height of the first injection outlet from the bottom is
At least, it is larger than the length obtained by subtracting the height of the edge portion from the distance from the outer edge portion of the flange portion to the edge portion.
The self-supporting packaging bag according to any one of claims 1 to 3. The fragile processing part
It is formed by a plurality of unit fragile portions evenly distributed inside the tubular portion.
The self-supporting packaging bag according to any one of claims 1 to 4. A second injection port portion capable of forming an opening is further provided above the bottom portion in the body portion.
The self-supporting packaging bag according to any one of claims 1 to 5.

Images