JP2012081993A - Packaging container with spout - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging container with a spout which is a packaging container for replenishing in which flowable contents can be discharged without generating pulsation and even the paste-like contents with high viscosity can be smoothly discharged when replenishing the other container.SOLUTION: The packaging container 10 for replenishing having a spout opening 5 at an upper corner incorporates a ventilation tube 9 for introducing atmospheric air into a space above the upper surface of the flowable contents from the outside of the packaging container with spout opening 5 opened and with the packaging container inverted when the other container is replenished with the flowable contents in the packaging container. The spout opening 5 is formed of a heat seal in the periphery, one end of ventilation tube 9 is arranged in the spout opening 5, and the other end of the ventilation tube 9 is arranged in the vicinity of a lower corner facing the spout opening 5 in the packaging container 10.

Description

  The present invention relates to a packaging container for refilling provided with a spout. More specifically, it is a packaging container for refilling, and when refilling to another container, the fluid content can be discharged without causing pulsation, and the paste-like fluid content with high viscosity can be discharged. It is related with the packaging container with a spout which can discharge fluid contents smoothly even if it exists.

  Conventionally, single- or multi-layer synthetic resins with a sealant layer on the inner surface for packaging for storing, storing and transporting toiletries such as liquid detergents, shampoos, rinses, body shampoos, household products and processed foods Flexible packaging bags and packaging containers (hereinafter also referred to as packaging containers) in which the peripheral edge of the film is heat-sealed are used.

  In recent years, compared to plastic bottle containers, the weight of synthetic resin can be reduced, and it can be crushed during disposal after use to reduce the amount of waste or reduce the volume of waste. Packaging containers composed of these synthetic resin films are increasingly used as countermeasures against environmental problems. As a refill packaging container for refilling fluid contents into a plastic bottle container equipped with a hand pump, a resin film at the bottom folded in half, and two front and back resins as the body A typical example is a standing pouch in which a film is assembled as a self-supporting packaging container by heat-sealing the outer peripheral edge. Generally, it is sometimes called a refill pouch.

  Such a packaging container for refilling is provided with a spout in order to improve usability during refilling. When opening this spout, a notch (notch for starting cutting) is formed in the spout so that it can be opened easily by hand without using tools such as scissors. Has become commonplace. Further, when opening from the notch as a starting point, a concave opening guide line that guides the opening may be formed so that the opening is easier.

By the way, although the packing container for refilling conventionally proposed is provided with a spout, it has a spout with a narrowed tip and a nozzle shape. And restricting abrupt outflow and determining the outflow direction of the fluid content (for example, see Patent Documents 1 and 2). In this case, since the refill pouch is composed of a thin plastic film, the container shape is not rigid, and in the space occupied by the fluid content that has flowed out of the refill pouch, It was difficult to supply outside air through the spout and replace it with outside air.
For this reason, the surface of the pouch for refilling was crushed by hand, and it squeezed out by making the opposing distance of two resin films approach, and had to flow out the fluid content. However, if two films are brought into close contact with each other at the spout, there is a problem that the spout is blocked and the fluid content cannot be discharged smoothly.

  In order to eliminate clogging of the spout and smooth discharge of the fluid content, the spout is prevented from clogging by being inflated by molding by embossing in the part of the spout (for example, Patent Documents 3 and 4), and a method of preventing the spout from being blocked by inserting a tube expanding tool into the spout portion (see, for example, Patent Document 5) have been proposed.

JP-A-9-183442 Japanese Patent Laid-Open No. 10-203567 Japanese Patent Laid-Open No. 11-11498 JP 2002-154559 A JP 2000-190996 A

However, embossing the resin film at the spout part to inflate it, or inserting a ring into the spout part reduces the clogging of the spout, but the flowable content of the spout is reduced. In parallel with the discharge, it is not successful to introduce the outside air into the container and discharge the flowable content by the weight of the flowable content. For this reason, in the case of fluid contents with low viscosity, the discharge from the spout is performed relatively smoothly, but the discharge of the fluid content and introduction of the outside air into the container through one spout Are alternately performed, and there is a problem that pulsation occurs in the discharge of the fluid content.
In addition, when the fluid content is discharged from the sealed packaging container, if the outside air is not replenished to the gap generated by the discharge of the fluid content, the fluid content is discharged, Negative pressure is generated. As a result, the resin films on the front and back constituting the packaging container are in close contact with each other, and it is not possible to avoid the occurrence of frictional resistance when discharging the fluid contents from the packaging container, and the viscosity is high from the spout. In order to discharge the paste-like fluid contents, it is necessary to squeeze and squeeze the resin film on the trunk part by hand, which requires considerable labor, and there is a problem that elderly people feel burdened.

Especially in pasty fluid contents with high viscosity, such as shampoos and conditioners, it is difficult to refill the fluid contents into other containers. Further improvements have been required for refillable packaging containers filled with. However, these problems could not be solved simply by means of preventing the spout from being blocked.
For this reason, when fluid content such as liquid, paste, and gel is refilled into another container, the fluid content can be discharged without causing pulsation and the fluid content of the paste is high in viscosity. There has been a demand for a packaging container with a spout that can smoothly discharge fluid contents even if it is a product.

  The present invention has been made in view of the above circumstances, and is a packaging container for refilling, and when refilling to another container, fluid content can be discharged without causing pulsation, and viscosity is increased. It is an object of the present invention to provide a packaging container with a spout that can smoothly discharge a fluid content even if it is a paste-like fluid content having a high content.

  In order to solve the above-mentioned problems, the present invention provides a method for transferring a fluid content filled in a refill packaging container to another container in a state where the packaging container is turned upside down. By allowing the air gap above the surface (liquid level) to communicate with the outside of the packaging container through a vent pipe and pressurizing the upper surface of the fluid content at atmospheric pressure, The technical idea is to discharge the flowable contents without causing pulsation, and to smoothly discharge the flowable contents from the spout, even if it is a paste-like flowable content having a high viscosity.

  In order to solve the above-mentioned problems, the present invention provides a refilling packaging container having a spout at the upper corner, when the fluid content in the packaging container is refilled to another container. Built-in ventilation pipe for introducing air from the outside of the packaging container to the space above the upper surface position of the fluid content with the outlet opened and the packaging container inverted. A packaging container with a spout is provided.

  It is preferable that a suspension hole is disposed at the peripheral edge of the lower corner on the diagonal line with the position of the spout.

  Further, the spout is formed by heat sealing at a peripheral portion, one end of the vent pipe is disposed in the spout, and the other end of the vent pipe is opposed to the spout in the packaging container. It is preferable to be arranged in the vicinity of the lower corner.

  Moreover, it is preferable that the said spout is embossed or a pipe expansion tool is inserted.

  Further, the spout is a spout made of a molded resin, one end of the vent pipe is disposed in the spout of the spout, and the other end of the vent pipe faces the spout in the packaging container. It is preferable to be arranged in the vicinity of the lower corner.

In the packaging container with a spout according to the present invention, in a state where the packaging container is inverted, the gap above the position of the upper surface (liquid level) of the fluid content is communicated with the outside of the packaging container. Built-in trachea.
When refilling the fluid contents in the packaging container with another container, open the spout and simultaneously open one end of the vent pipe in contact with the outside air, and turn the packaging container upside down. Is introduced into the space above the position of the upper surface (liquid level) of the fluid content through the air pipe, and the upper surface of the fluid content is pressurized at atmospheric pressure so that the fluid content is obtained. Due to the action of the weight of the material, the fluid content is smoothly discharged from the spout even if it is a paste-like fluid content having a high viscosity.
Moreover, even if it is a fluid content with a low viscosity, a fluid content can be discharged | emitted from a spout, without raise | generating pulsation.
In addition, in the packaging container with a spout according to the present invention, the air passing through the vent pipe is introduced into the packaging container, and the upper surface of the fluid content is pressurized at atmospheric pressure, whereby the weight of the fluid content is reduced. The inner surface near the spout is not in close contact with each other, and the flowable contents are smoothly discharged without pulsation regardless of the structure and shape of the spout. it can.
In addition, if the packaging container with a spout according to the present invention is suspended using a suspension hole, it can be left in an inverted state, and further, air is introduced into the packaging container with a spout through the vent pipe according to the present invention. Since it is introduced, even a paste-like fluid content having a high viscosity is almost completely discharged from the inside of the packaging container with a spout, so that resources can be effectively used and economical.

It is a front view which shows an example of the packaging container with a spout concerning this invention. It is AA arrow sectional drawing of FIG. 1, Comprising: An example which attached the vent pipe is shown. It is AA arrow sectional drawing of FIG. 1, Comprising: Another example which attached the vent pipe is shown. It is sectional drawing which shows an example which attached the vent pipe to the spout. It is BB arrow sectional drawing of FIG. 4, Comprising: An example which attached the vent pipe is shown. It is a perspective view which shows the state which introduce | transduces air | atmosphere from a vent pipe when refilling using an example of the packaging container with a spout concerning this invention.

Hereinafter, the present invention will be described based on preferred embodiments.
As shown in FIG. 1, the packaging container for refilling provided with the spout in the upper corner portion according to the present invention has two synthetic resin films on the front and back of the body portion and the bottom portion folded in two. A standing pouch-type packaging container, which is a self-supporting container in which the peripheral edge portion of the synthetic resin film is heat-sealed and the bottom sheet member spreads by being filled with the fluid content and can be stably supported, is preferable.
In the packaging container with a spout having the opening means of the present invention, the structure and shape of the spout are not particularly limited. Because, when refilling the fluid content of the packaging container into another container, the fluid content is discharged from the spout by its own weight by adding atmospheric pressure to the inside of the packaging container through the vent pipe according to the present invention, This is because the action of naturally expanding the spout works, so there is no need to bias in the direction of expanding the spout.
That is, in FIG. 1, although the spout was formed by heat sealing at the peripheral portion, it may be a spout made of molded resin. Moreover, although it is preferable that embossing is given in what the spout was formed by the heat seal of the peripheral part, it does not need to be embossed. In addition, in the case where the spout is formed by heat sealing at the peripheral portion, it is preferable that a tube expansion tool for preventing the spout from being blocked is inserted, but the tube expander may not be inserted.
FIG. 1 shows a spout 5 formed by heat sealing at the periphery of the film. However, in the packaging container with a spout of the present invention, the spout of the spout can be used as long as it has a certain opening cross-sectional area. There is no particular limitation on the structure and shape. Specifically, the cap may be a spout with a cap (plug) or a spout provided with a plug at the tip of the spout.
Moreover, in the spout 5 formed by the heat seal of the peripheral part, it is preferable that the embossing for preventing that the inner surface of the spout 5 part adhere | attaches and obstruct | occludes is given, and the pipe expansion tool 16 ( More preferably, it is inserted.
FIG. 1 is a front view showing an example of a packaging container with a spout according to the present invention. In FIG. 1, the packaging container 10 with a spout of the present invention shows a state before the fluid content is filled and sealed from the filling port 3. After the flowable contents are filled into the packaging container, the filling port 3 is sealed by heat sealing (see, for example, reference numeral 3a in FIG. 6). In FIG. 1, the code | symbol 1 is the part which heat-sealed the peripheral part of the packaging container with a spout. In FIG. 1, the code | symbol 4 shows the hole for suspension, and the code | symbol 2 has shown the heat seal part of the bottom part in the packaging container with a spout of this invention. 1 and 6, the range of the heat seal portions 1 and 2 at the peripheral portion is indicated by parallel oblique lines.

The spout 5 shown in FIG. 1 is formed by heat-sealing the peripheral edge at the upper corner of the packaging container. To discharge the flowable contents, pull the opening knob 6 of the spout 5 by hand, tear it along the opening guide line 7 from the notch 8a, open the spout 5, and expose the spout 5 Is possible. In FIG. 2 showing a cross-sectional view taken along the line AA of FIG. 1, one end of the vent pipe 9 is inserted into the spout 5 formed by heat-sealing the body films 14 and 15. Yes. Further, the other end of the vent pipe 9 is disposed in the vicinity of the lower corner portion facing the spout 5 in the packaging container.
After tearing along the opening guide line 7 and opening the spout 5, if the packaging container 10 is inverted, the fluid content is discharged to the outside of the packaging container through the spout 5. Outside air is replenished through the air holes 11 of the air pipe 9 into the air gap generated by the discharge of the object.
That is, the air outside the packaging container is above the position of the upper surface (liquid level) of the fluid content through the vent hole isolated by the vent pipe from the spout 5 from which the fluid content is discharged. The upper part of the fluid content is pressurized at atmospheric pressure.

In FIG. 1, by pulling the opening opening knob 6 of the outlet 10 of the packaging container 10 with the outlet according to the present invention and tearing it along the opening guide line 7 from the notch 8a, the outlet 5 is opened and the atmosphere is opened. As shown in FIG. 2, one end of the vent pipe 9 disposed in the spout 5 is also exposed to the atmosphere.
After opening the spout 5, if the packaging container 10 with a spout according to the present invention is inverted as shown in FIG. 6, the fluid content is discharged through the spout 5 to the outside of the packaging container. The outside air is supplied to the space above the position of the upper surface (liquid level) of the fluid content through the vent hole 11 of the vent tube 9 into the space generated by the discharge of the fluid content, and the fluid content Is pressurized at atmospheric pressure.

The vent tube used in the packaging container with a spout of the present invention is a tube having a hollow vent, and can introduce air into the packaging container through a vent isolated from the fluid content. For example, the structure and material are not particularly limited. Examples of the cross-sectional shape of the vent pipe include a circular shape, an elliptical shape, a semi-circular shape, a semi-elliptical shape, and a polygonal shape such as a quadrangle and a hexagon. However, it is preferable because the price is low. In addition, the material of the vent pipe is preferably one formed from a thermoplastic synthetic resin such as low / medium / high-density polyethylene, polypropylene, or polyvinyl chloride because of ease of handling. At least one place is fixed to the inner surface of the packaging container with heat seal or adhesive, and when the packaging container is turned upside down when transferring the fluid contents to another container, The position of the vent pipe is not shifted due to the movement.
Moreover, the inner diameter dimension of a vent pipe should just be about 0.5-12 mm, and an inner diameter is more preferable 2-8 mm. When the inner diameter of the ventilation pipe is smaller than 0.5 mm, it is inconvenient because it increases the possibility of clogging with dust and the like, and the piping resistance increases when air is ventilated. When the inner diameter is larger than 12 mm Is not preferable because it is difficult to accommodate in a spout having a limited size. The thickness of the vent pipe is preferably about 0.1 to 1.2 mm.
In addition, by adding an organic lubricant to the molding resin of the vent pipe, or by coating a water repellent on at least the inner face of the vent pipe, it is possible to suppress the adhesive force of the fluid content to the inner face of the vent pipe. preferable. In this way, the flowable contents entering the ventilation holes of the ventilation pipe are promoted to be discharged when the packaging container is inverted, and the time until the atmosphere is introduced into the packaging container is increased. Shortened. Examples of the organic lubricant include unsaturated fatty acid amides such as oleic acid amide and erucic acid amide, and saturated fatty acid amides such as stearic acid amide and behenic acid amide. Examples of water repellents include commercially available silicone oils, various modified silicone compounds, silicone water repellents such as various modified silicone resins, and fluorine such as tetrafluoroethylene resins and tetrafluoroethylene / ethylene copolymers. And water repellents.

When the fluid content filled in the packaging container with a spout of the present invention is refilled into, for example, a plastic bottle container, as shown in FIG. 6, it is placed in the spout 5 and the spout 5 in advance. If the spout 5 of the packaging container with a spout that has exposed the vent pipe 9 is inserted into the mouth of the plastic bottle container 20 and the packaging container 10 with a spout is inverted, the outside air naturally passes. Through the trachea, the atmosphere outside the packaging container is supplied to the gap above the position of the upper surface (liquid level) of the fluid content, and atmospheric pressure is applied to the upper part of the fluid content, thereby allowing fluidity. Due to the self-weight of the contents, the fluid contents can be smoothly discharged from the spout even if it is a paste-like fluid content having a high viscosity.
Moreover, it is possible to make the refilling operation into another container smooth by suspending the packaging container with a spout of the present invention by utilizing the hole 4 for suspending. In particular, in the state where the packaging container 10 with the spout is inverted, there is no need to perform the opening operation with one hand while supporting the weight of the fluid contents with one hand, and the opening means can be opened with both hands. Refilling work can be done easily even by elderly people with weak grip. Since the tip of the ventilation pipe is disposed in the vicinity of the suspension hole 4 in the packaging container, the atmosphere is ejected at a position above the upper surface 41 (interface that contacts the atmosphere) of the fluid contents 40. To do.
In addition, since the spout 5 is directed almost downward with the suspension hole 4 as a fulcrum, the spouted packaging container 10 may be swung or the spout 5 may be detached from the mouth of the bottle container 20 at the time of pouring. Is suppressed and workability is improved.
In addition, the packaging container with spout according to the present invention can be left in an inverted state if it is suspended by using the suspension holes, and further, air is introduced into the packaging container with spout by the ventilation means according to the present invention. Since it is introduced, even a paste-like fluid content having a high viscosity can be almost completely discharged from the inside of the packaging container with a spout, so that resources can be effectively used and economical.

In FIG. 1, a tube expansion tool may be inserted into the spout 5 of the packaging container 10 with a spout according to the present invention to prevent the spout from being blocked. Although there is no restriction | limiting in particular in the structure and material of a pipe expander, A well-known pipe expander can be used.
As shown in FIG. 3, an example of the pipe expander 16 is a pipe having a simple structure, but a separate vent pipe 9 and pipe expander 16 may be incorporated in the spout 5, and The vent tube 9 and the tube expansion tool 16 may be integrally formed. In order to prevent the spout from being blocked, the resin film at the spout may be embossed and inflated (not shown). The pipe expansion tool 16 does not need to have the same length as the vent pipe 9 and may be provided in the spout 5 or in the vicinity thereof.

Further, the spout may be a spout 30 formed by resin molding as shown in FIGS. FIG. 4 shows a cross-sectional structure diagram of an example spout, and FIG. 5 shows a view taken along the line BB in FIG. The spout 30 has a base 22 that is sealed between the body films 14 and 15, and a nozzle 21 that protrudes from the base 22. A discharge port 23 is formed inside the spout 30, and the vent hole 11 of the vent pipe 24 reaches the tip portion 26 of the nozzle 21. 4 and 5, the vent hole 11 and the fluid content outlet 23 are separated by a vent pipe 24 in order to prevent the vent hole 11 from being blocked by the fluid content. The vent pipe 24 integrated with the spout 30 is connected to the vent pipe 9 inside the pouch by fitting or bonding at the connecting portion 25. The nozzle tip 26 is closed by a cap 27 that can be attached and detached by screws, fittings, or the like. When the vent tube 9 is a flexible tube like the pouch, if the vent tube 24 integrated with the spout 30 is formed of a hard resin or the like as the spout 30, the pressure of the fluid content passing through the discharge port 23 This is preferable because the air holes 11 are less likely to be blocked.
The base 22 of the spout 30 has a shape that expands to the left and right (so-called boat shape) as shown in FIG. 5, and the inner surface of the trunk films 14 and 15 is easily and reliably sealed.

In order to open the spout 5 shown in FIG. 1, the notches 8a and 8b and the opening guide line 7 are formed. Therefore, if the pulling knob 6 for the spout is pulled by hand, force concentrates on the notch. Opening can be started easily. In addition, since the opening guide line is formed continuously with the notch, the tearing can be stably advanced along the opening guide line, and the position to be opened can be prevented from being shifted from the planned position.
The shape of the notch may be a U-shaped or V-shaped cutout or a simple cut in addition to a linear cutout, and the shape is not limited. Furthermore, in order to prevent unintentional cracks starting from the notch due to impact or the like, the vicinity of the tip on the notch side of the opening guide line is different from the direction of the force applied to the notch, for example, a semicircle. In addition to the shape, it may be formed in a substantially semicircular shape, a V shape, a U shape, or the like. Further, even in the case of a semicircular shape, the size can be set as appropriate. As another method for preventing unintentional cracks starting from the notch due to impact or the like, the opening guide line may be separated from the notch and provided along the extending direction of the end of the notch. Good. In this case, the distance between the tip of the opening guide line on the notch side and the tip of the notch on the opening guide line side is preferably, for example, 0.3 to 0.8 mm.
Preferably, two opening guide lines are provided in the direction in which the notch is guided by the notch, and the tear is guided from both sides between the two opening guide lines. In this case, even if each of the two opening guide lines is separated from the notch, it is provided along the extending direction of the end portion of the notch so that the tearing protrudes from between the two opening guide lines. It becomes difficult. Further, if tearing is easy, an opening guide line may be provided only on one of the two films. Here, the two films overlapped in the heat seal part 1 are the films 14 and 15 on the front and back of the body part. Further, when one of the two stacked films is extended so as not to overlap, an opening guide line may be provided continuously to the extension.

The notch and the opening guide line can be formed by the following method, for example.
First, a notch is formed by irradiating a laser beam such as a carbon dioxide laser to a predetermined portion of the heat seal portion 1 by scanning a plurality of times from both the front and back surfaces. Here, the film constituting the spout 5 is made of a PET layer or the like in which the outer layer easily absorbs the laser. Therefore, the portion of the outer layer irradiated with the laser generates heat, melts, and further evaporates. Then, due to the heat generated at this time, the inner layer made of an LLDPE layer that hardly absorbs the laser is also melted and evaporated to form a notch penetrating the film.

Next, after forming the notch, the laser is further scanned and irradiated to form a concave opening guide line continuous with the notch. At this time, the unsealing guide line needs to be formed with a sufficient strength and a depth that can be easily torn by hand. Make sure that it is not too deep or impossible to tear by hand. Usually, the laser beam is irradiated to such an extent that the outer layer evaporates and the inner layer is exposed to form the unsealed guide line 7 formed of a half cut groove.
Since the unsealing guide line formed by irradiating a laser is extremely thin and difficult to visually confirm, printing the dotted line, broken line, etc. along the actual unsealing guide line so that the position of the unsealing guide line can be visually confirmed Is preferably displayed.

Here, the laser is not particularly limited as long as it can form a notch and an opening guide line. A gas laser other than a carbon dioxide laser, a solid laser such as a YAG laser, a semiconductor laser, or the like can be used depending on the material of the resin sheet. It can be used as appropriate.
The output of the laser used is preferably in the range of 3 to 100W. If the output is less than 3 W, it may take a long time to form the notch, and if it exceeds 100 W, the laser device tends to be expensive. In addition, in order to form the notch and the opening guide line, the number of times the laser is scanned with respect to the portion can be appropriately set. For example, the laser output is in the above range, and the notch and the opening guide line as shown in the illustrated example. In order to form the notch, the laser is scanned 3 to 10 times in a reciprocating manner, and the laser is scanned 1 to 2 times in a reciprocating manner in order to form the opening guide line.

  As described above, when a laminated sheet made of an LLDPE layer or the like whose inner layer is difficult to absorb laser and the outer layer is easily formed of PET or the like as the outer layer is used as the packaging container 10, the notch and opening guide are provided by the laser irradiation described above. Lines can be manufactured continuously, easily and accurately. Further, if at least a portion where the notch and the opening guide line are formed of such a laminated sheet in the packaging container 10, these can be formed by the laser irradiation described above. However, the material of the packaging container 10 is not particularly limited to these, and can be appropriately selected according to the properties of the fluid content to be filled. For example, you may form the packaging container 10 only from the material which cannot absorb a laser easily. In that case, the opening guide line can be formed by mechanically forming a notch using a blade mold and further forming a concave shape by mechanically scratching the surface with a cutter or the like.

  The packaging container with a spout of the present invention has two synthetic resin films on the front and back of the body part and a synthetic resin film folded in two at the bottom part. For example, a biaxially stretched polypropylene film, Various films such as a biaxially stretched polyamide film, a biaxially stretched polyester film, and an ethylene-vinyl alcohol copolymer film are used as a base material. Low-density polyethylene, linear low-density polyethylene, and ethylene-acetic acid are used as the base film. A composite film in which an olefin-based thermal adhesive resin such as a vinyl copolymer or polypropylene is laminated as a sealant layer is used. In this case, a plurality of the above-described various films may be laminated on the base material in order to enhance the protection of the fluid content, and further a metal thin film layer such as an aluminum foil may be used. Further, the structure of the packaging container with spout of the present invention is not particularly limited, but a standing pouch-type packaging container that can stand by itself after filling with the fluid content is preferable.

  As an example of the resin sheet used in the packaging container with a spout according to the present invention, the outer layer is, for example, a biaxially stretched polyethylene terephthalate (PET) layer having a thickness of 12 to 25 μm or a two layer having a thickness of 15 to 25 μm. It is an axially stretched polyamide resin layer, and the inner layer is a laminated sheet made of, for example, a linear low density polyethylene (LLDPE) layer having a thickness of 100 to 150 μm, and includes a wet lamination method, a dry lamination method, and a solvent-free dry layer. Manufactured by lamination method, extrusion lamination method, coextrusion lamination method and the like.

DESCRIPTION OF SYMBOLS 1 ... Heat seal part of side surface peripheral part, 2 ... Heat seal part of bottom part, 3 ... Filling port, 3a ... Heat seal part of filling port, 4 ... Hanging hole, 5 ... Spout, 6 ... For opening spout Knob, 7 ... Opening guide line, 8a, 8b ... Notch, 9, 24 ... Vent tube, 10 ... Packaging container with spout, 11 ... Vent hole, 14, 15 ... Resin film on trunk, 16 ... Tube expansion tool (pipe) ), 20 ... Plastic bottle container, 21 ... Nozzle, 22 ... Base, 23 ... Discharge port, 25 ... Connection part, 26 ... Nozzle tip, 27 ... Cap, 30 ... Spout, 40 ... Fluid content, 41 ... The upper surface (liquid level) of the fluid content.

Claims (5)

  In a packaging container for refilling provided with a spout at the upper corner, when refilling the fluid contents in the packaging container with another container, the spout is opened and the packaging container is inverted. A packaging container with a spout, which has a built-in vent pipe for introducing air from the outside of the packaging container into the gap above the position of the upper surface of the fluid content in the state of being .   The packaging container with a spout according to claim 1, wherein a suspension hole is provided at a peripheral edge of a lower corner on a diagonal line with the position of the spout.   The spout is formed by heat sealing at a peripheral portion, one end of the vent pipe is disposed in the spout, and the other end of the vent pipe is opposed to the spout in the packaging container. It is arrange | positioned in the vicinity of a part, The packaging container with a spout of Claim 1 or 2 characterized by the above-mentioned.   The packaging container with a spout according to any one of claims 1 to 3, wherein the spout is embossed or a tube expansion tool is inserted.   The spout is a spout made of molded resin, one end of the vent pipe is disposed in the spout outlet, and the other end of the vent pipe is opposed to the spout in the packaging container. It is arrange | positioned in the vicinity of a part, The packaging container with a spout of Claim 1 or 2 characterized by the above-mentioned.

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