JP7015477B2 - Inspection and reduction method of pouch with valve for double container, inspection and reduction system of pouch with valve for double container, and pouch with valve for double container - Google Patents

Description

The present invention relates to a method for inspecting and reducing a pouch with a valve for a double container, an inspection and reduction system for a pouch with a valve for a double container, and a pouch with a valve for a double container.

Conventionally, a double container having an external container, a pouch housed therein, and a check valve having a valve for communicating the inside of the pouch with the atmosphere has been known. Generally, in such a double container, for example, the pouch is folded, the pouch is housed in the outer container in a reduced state, and then the outer container is closed by a valve.

In recent years, such double-container pouches have come to be filled with foods as well as chemicals, and the demand for double-containers is increasing. Along with this, there is an increasing demand for leak inspection for pouches of double containers.

By the way, when a leak inspection is performed on a package such as a pouch, a pouch filled with a predetermined gas is housed in an inspection chamber, and the inspection chamber is sealed and depressurized to apply pressure inside and outside the pouch. A leak inspection device that generates a difference and inspects a gas leak from a pouch is known (for example, Patent Document 1).

JP-A-2015-42948

However, in a pouch with a valve in which a valve having a check valve is attached to the pouch, generally, there is almost no gas or filling in the pouch after the valve is attached. Therefore, even when the pressure in the inspection chamber containing the pouch with a valve is reduced, no pressure difference is generated between the inside and the outside of the pouch, and it is difficult to inspect by the above inspection device.

Further, if a sufficient amount of gas or filling is present in the pouch of the pouch with a valve, a pressure difference can be generated between the inside and the outside of the pouch, and leakage of gas or the like from the pouch can be inspected. In the subsequent process, it becomes difficult to shrink the pouch with a valve because it is housed in the outer container.

The present invention has been made in consideration of such a point, and it is possible to inspect a pouch with a valve for leakage even after the valve is attached to the pouch, and it is possible to easily reduce the pouch with a valve. It is an object of the present invention to provide a method for inspecting and reducing a pouch with a valve for a double container, an inspection and reduction system for a pouch with a valve for a double container, and a pouch with a valve for a double container.

The present invention is a method for inspecting and reducing a pouch with a valve for a double container, which is a step of preparing a pouch with a valve, a step of injecting an inspection gas into the pouch with a valve, and a chamber of the pouch with a valve. A step of installing the inside, a step of depressurizing the inside of the chamber and inspecting the leakage of the inspection gas from the inside of the pouch with a valve, a step of removing the inspection gas from the inside of the pouch with a valve, and the above-mentioned It is a method for inspecting and reducing a pouch with a valve for a double container, which comprises a step of reducing the pouch with a valve.

The present invention is a method for inspecting and reducing a pouch with a valve for a double container, which comprises inspecting a change in pressure in the chamber in a step of inspecting a leak of the inspection gas.

The present invention is to inspect a pouch with a valve for a double container, characterized in that the inspection gas is colored and the change in color in the chamber is inspected in the step of inspecting the leakage of the inspection gas. And the reduction method.

The present invention is a method for inspecting and reducing a valved pouch for a double container, characterized in that the valved pouch is wound into a roll in a step of reducing the valved pouch.

The present invention is a method for inspecting and reducing a valved pouch for a double container, characterized in that the valved pouch is folded in a step of reducing the valved pouch.

The present invention is an inspection and reduction system for a pouch with a valve for a double container and an inspection and reduction system for a pouch with a valve for a double container for reducing the pouch with a valve for a double container. An inspection device having a gas injection device for injecting, a chamber in which the pouch with a valve is housed, an exhaust mechanism for depressurizing the inside of the chamber, and a degassing device for removing the inspection gas from the inside of the pouch with a valve. It is an inspection and reduction system for a pouch with a valve for a double container, which is provided with a reduction device for reducing the pouch with a valve.

The present invention is an inspection and reduction system for a pouch with a valve for a double container, wherein the inspection device further includes a pressure gauge for measuring the pressure in the chamber.

The present invention is an inspection and reduction system for a pouch with a valve for a double container, wherein the inspection gas is colored.

The present invention is an inspection and reduction system for a pouch with a valve for a double container, wherein the reduction device winds the pouch with a valve in a roll shape.

The present invention is an inspection and reduction system for a pouch with a valve for a double container, wherein the reduction device is a folding pouch with a valve.

The present invention is a pouch with a valve for a double container, which is inspected and reduced by the method for inspecting and reducing a pouch with a valve for a double container according to the present invention.

According to the present invention, even after the valve is attached to the pouch, leakage of the pouch with a valve can be inspected and the pouch can be easily reduced.

FIG. 1 is an exploded perspective view showing a double container provided with a pouch with a valve for a double container according to the present embodiment. FIG. 2 is a plan view showing a pouch with a valve for a double container according to the present embodiment. FIG. 3 is a cross-sectional view (cross-sectional view taken along line III-III of FIG. 2) showing a pouch with a valve for a double container according to the present embodiment. FIG. 4 is a schematic view showing an inspection and reduction system for a pouch with a valve for a double container according to the present embodiment. FIG. 5 is a schematic perspective view of the reduction device of the inspection and reduction system of the pouch with a valve for a double container according to the present embodiment as viewed from below. FIG. 6 is a cross-sectional view (VI-VI line cross-sectional view of FIG. 5) showing a reduction device of an inspection and reduction system for a pouch with a valve for a double container according to the present embodiment. FIG. 7 is a flowchart illustrating a method of inspecting and reducing the pouch with a valve for a double container according to the present embodiment. 8 (a)-(e) are cross-sectional views showing a pouch with a valve for a double container which is reduced by the inspection and reduction method of the pouch with a valve for a double container according to the present embodiment. FIG. 9 is a schematic view showing a reduction device of an inspection and reduction system for a pouch with a valve for a double container according to a modification of the present embodiment. 10 (a)-(b) is a perspective view showing a pouch with a valve for a double container which is reduced by the inspection and reduction method of the pouch with a valve for a double container according to a modification of the present embodiment.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 8. In each of the following figures, the same parts are designated by the same reference numerals, and some detailed description may be omitted.

Configuration of Pouch with Valve for Double Container First, the outline of the pouch with valve for double container according to the present embodiment will be described with reference to FIGS. 1 to 3. FIG. 1 is an exploded perspective view showing a double container provided with a pouch with a valve for a double container according to the present embodiment. FIG. 2 is a plan view showing a pouch with a valve for a double container according to the present embodiment, and FIG. 3 is a cross-sectional view showing a pouch with a valve for a double container according to the present embodiment. In the present specification, "upper" and "lower" mean upper and lower parts of the double container 1 in an upright state (FIG. 1), respectively.

As shown in FIG. 1, the double container 1 includes an outer container 10 and a pouch with a valve for a double container (hereinafter, referred to as a pouch with a valve) 20 attached to the outer container 10. A pressurized fluid (not shown) serving as a propellant is filled between the external container 10 and the pouch 20 with a valve, and the double container 1 according to the present embodiment is a so-called double aerosol container. ing.

The outer container 10 includes a mouth portion 11, a shoulder portion 12 provided below the mouth portion 11 and gradually increasing in diameter toward the lower side, and a cylindrical body portion 13 provided below the shoulder portion 12. It has a bottom portion 14 provided below the body portion 13. Of these, a curl portion 11a is formed in the mouth portion 11, and the mounting cup 55 described later of the pouch 20 with a valve is fitted to the curl portion 11a so that the pouch 20 with a valve is fixed to the outer container 10. It is configured in.

Such an outer container 10 may be formed from a metal plate such as aluminum or tin by drawing or the like, or may be formed by connecting a plurality of members by winding. Further, the outer container 10 may be made of a material such as a pressure-resistant synthetic resin or pressure-resistant glass.

Next, the pouch 20 with a valve according to the present embodiment will be described. As shown in FIGS. 1 to 3, the pouch 20 with a valve includes a bag-shaped pouch 30 in which the contents are housed, a connecting member 40 attached to the pouch 30, a valve 50 attached to the connecting member 40, and the like. have. As shown in FIG. 1, the pouch 20 with a valve is held in a rolled state by, for example, a tape T or the like, contracted, and inserted into the outer container 10.

As shown in FIG. 2, the pouch 30 according to the present embodiment is a standing type pouch formed by heat-sealing a body portion 31a and a bottom portion 31b. The body portion 31a includes a pair of main surface sheets 32 composed of a front surface sheet 32a and a back surface sheet 32b arranged so as to face each other, and is near and above the side edges 33 of the pair of superposed main surface sheets 32. The vicinity of the edge 34 is heat-sealed with each other. Further, a connecting member 40 arranged between the pair of superposed main surface sheets 32 is attached to the central portion of the upper portion of the pouch 30. As described above, the upper portion of the pouch 30 is closed by the heat seal formed in the vicinity of the upper edge 34 of the pair of main surface sheets 32 and the connecting member 40. The details of the connecting member 40 will be described later.

Further, a bottom sheet 36 forming a bottom portion 31b is arranged between the lower edges 35 of the pair of main surface sheets 32. A storage space for accommodating the contents is partitioned in the space surrounded by the pair of main surface sheets 32 and the bottom surface sheet 36.

The bottom sheet 36 is bent so as to be convex toward the accommodation space side, and the vicinity of the peripheral edge thereof is heat-sealed together with the lower portion of the overlapping main surface sheets 32. The bottom sheet 36 retains the shape of the lower ends of the pair of main surface sheets 32, thereby imparting independence to the pouch 30.

Examples of the main surface sheet 32 and the bottom sheet 36 used in the pouch 30 include a single layer or laminated sheet made of synthetic resin, or a laminated sheet made of metal foil and synthetic resin. The metal foil may be a light metal such as an aluminum foil. The synthetic resin may be polyethylene or polypropylene having excellent chemical resistance, polyethylene terephthalate, nylon or EVOH having excellent gas barrier properties. These materials can be appropriately selected depending on the contents, or may be used in combination. Instead of the metal foil, carbon, silica, alumina or the like may be vapor-deposited on a synthetic resin to form a film.

Next, the connecting member 40 will be described. As shown in FIG. 3, the connecting member 40 includes a fixing portion 41 fixed to the pouch 30 and a valve connecting portion 42 provided above the fixing portion 41 to which the valve 50 is connected.

The fixing portion 41 is formed in a cylindrical shape, and a pair of main surface sheets 32 of the pouch 30 are welded to the outer periphery of the fixing portion 41. Further, below the fixing portion 41, a tubular tube connecting portion 43 extending into the pouch 30 is provided, and the tube connecting portion 43 is provided with a tube 44 for discharging the contents filled in the pouch 30. Are concatenated.

Further, the valve connecting portion 42 is formed in a cylindrical shape, and is configured such that a housing 51, which will be described later, of the valve 50 is penetrated into the valve connecting portion 42. The fixing portion 41, the valve connecting portion 42, and the tube connecting portion 43 are provided so that their respective central axes are on the same axis L. Further, the tube 44 has a predetermined rigidity and extends from the tube connecting portion 43 substantially parallel to the axis L. In the following description, the central axis of the fixing portion 41, the valve connecting portion 42, and the tube connecting portion 43 are collectively referred to as the central axis L of the connecting member 40.

Such a connecting member 40 may be an integrally molded product, or may be composed of another member. Examples of the material used for the connecting member 40 include those made of synthetic resin such as polyolefin, polyacetal and nylon, and those obtained by coating stainless steel with an adhesive resin such as polyester and polyurethane. The connecting member 40 is not limited to the above-mentioned configuration, and a known configuration can be adopted.

Next, the valve 50 will be described. As shown in FIG. 3, the valve 50 includes a tubular housing 51, a tubular stem 52 housed in the housing 51 and a stem hole 52a formed as a flow path for the contents, and a stem 52. It includes an elastic body 53 that urges upward, a stem gasket 54 that closes the stem hole 52a of the stem 52, and a mounting cup 55 that fixes the entire valve 50 to the mouth portion 11 of the outer container 10.

In such a valve 50, a valve mechanism is formed by a stem 52, an elastic body 53, and a stem gasket 54. That is, as shown in FIG. 3, when the stem 52 is pushed upward by the urging force of the elastic body 53, the stem gasket 54 closes the stem hole 52a of the stem 52. Therefore, since the inside and the outside of the pouch 30 do not communicate with each other, the contents cannot be discharged or filled. On the other hand, although not shown, when the stem 52 moves downward against the urging force of the elastic body 53 by pressing the stem 52, the stem gasket 54 is elastically deformed by being pressed by the stem 52. The stem gasket 54 opens the stem hole 52a. Therefore, the inside and the outside of the pouch 30 are communicated with each other so that the contents are discharged or filled. Since a conventionally known valve mechanism can be used, detailed description thereof will be omitted here.

Such a pouch with a valve 20 may have, for example, a full injection capacity of 20 ml or more and 500 ml or less.

Configuration of Inspection and Reduction System for Pouch with Valve for Double Container Next, the inspection and reduction system for pouch with valve for double container according to the present embodiment will be described with reference to FIG. FIG. 4 is a schematic view showing an inspection and reduction system for a pouch with a valve for a double container according to the present embodiment. This inspection and reduction system for the valved pouch for a double container is for inspecting the valved pouch 20 and reducing the valved pouch 20.

As shown in FIG. 4, the inspection and reduction system (hereinafter referred to as an inspection and reduction system) 100 for a pouch with a valve for a double vessel includes a gas injection device 110 for injecting an inspection gas G into the pouch 20 with a valve. An inspection device 120 for inspecting leakage of the inspection gas G from the inside of the pouch 20 with a valve, a degassing device 130 for removing the inspection gas G from the inside of the pouch 20 with a valve, and a reduction device 140 for reducing the pouch 20 with a valve. And have. Of these, the gas injection device 110 has a gas injection port 111 for injecting the inspection gas G into the pouch 30 of the pouch 20 with a valve. The gas injection device 110 is configured to inject the inspection gas G into the pouch 30 in a state where the gas injection port 111 opens the stem hole 52a by pressing the stem 52 of the pouch 20 with a valve. .. At this time, as the inspection gas G, for example, an inert gas such as nitrogen gas or compressed air can be used.

The inspection device 120 has a chamber 121 in which the pouch 20 with a valve is housed, and an exhaust mechanism 122 for depressurizing the inside of the chamber 121. The inspection device 120 has a plurality of chambers 121, and each chamber 121 is configured to accommodate one pouch 20 with a valve. As a result, a plurality of pouches with valves 20 can be inspected at the same time, and the work time of the inspection work can be shortened. Further, by accommodating one valve-equipped pouch 20 in the chamber 121, it is possible to easily identify the valve-equipped pouch 20 in which a leak occurs when the pressure in the chamber 121 changes, as will be described later. Can be done.

The exhaust mechanism 122 is provided at one end of an exhaust passage 123 that communicates with the inside of the chamber 121, an on-off valve 124 provided in the middle of the exhaust passage 123, and the other end of the exhaust passage 123 to exhaust the inside of the chamber 121. Includes pump 125 and. The exhaust mechanism 122 is configured to reduce the pressure in the chamber 121 by driving the pump 125 with the on-off valve 124 open, and to keep the pressure in the chamber 121 constant by closing the on-off valve 124. .. Such an exhaust mechanism 122 is provided in each chamber 121, and the pressure in each chamber 121 can be adjusted independently. The pump 125 may be used in common for each chamber 121, for example, by connecting each exhaust passage 123 communicating with each chamber 121.

Further, the inspection device 120 has a pressure gauge 126 for measuring the pressure in the chamber 121. The pressure gauge 126 is connected to a control device (not shown), and transmits the measured pressure value in the chamber 121 to the control device as a signal.

The degassing device 130 has a gas discharge port 131 for discharging the inspection gas G from the inside of the pouch 30 of the pouch 20 with a valve. The degassing device 130 is configured to discharge the inspection gas G in the pouch 30 in a state where the gas discharge port 131 opens the stem hole 52a by pressing the stem 52 of the pouch 20 with a valve. .. When the inspection gas G is discharged while the gas discharge port 131 presses the stem 52 of the pouch 20 with a valve, the inspection gas G in the pouch 30 is sucked and discharged by a pump (not shown). good. In this case, it is possible to shorten the working time of the discharging work of discharging the inspection gas G in the pouch 30.

The reduction device 140 according to the present embodiment winds the pouch 20 with a valve into a roll shape. As shown in FIG. 5, the reduction device 140 includes a chuck 141 for holding the valve 50 of the pouch 20 with a valve, a winding unit 142 for winding the pouch 20 with a valve held by the chuck 141 in a roll shape, and a chuck 141. It has a pair of pressing members 143a and 143b for sandwiching the pouch 20 with a valve held in. Of these, the chuck 141 is configured to hold the pouch 20 with a valve so that the pouch 20 with a valve does not rotate with respect to the chuck 141. Such a chuck 141 is configured to be rotatable about the central axis of the take-up portion 142, and as will be described later, when the pouch 20 with a valve is wound into a roll shape, the chuck 141 rotates together with the take-up portion 142. It has become like. Further, the chuck 141 holds the pouch 20 with a valve so that the central axis L of the connecting member 40 of the pouch 20 with a valve is on the same axis as the central axis described later of the winding portion 142. As a result, as will be described later, it is possible to prevent the tube 44 from bending when the pouch 20 with a valve is wound into a roll shape.

As shown in FIGS. 5 and 6, the take-up portion 142 is formed in a cylindrical shape by a pair of semi-cylindrical members 142a and 142b. These semi-cylindrical members 142a and 142b are arranged close to each other so that the pouch 30 of the valved pouch 20 can be sandwiched by the semi-cylindrical members 142a and 142b. Such a winding unit 142 is configured to be movable by, for example, a cylinder mechanism or the like. More specifically, the take-up portion 142 is configured to be movable along the central axis of the take-up portion 142, and the take-up portion 142 moves toward the pouch 20 with a valve held by the chuck 141. As a result, the semi-cylindrical members 142a and 142b are configured to sandwich the pouch 30 of the pouch 20 with a valve.

Further, the take-up portion 142 is configured to be rotatable about the central axis of the take-up portion 142. By rotating the take-up portion 142 together with the chuck 141 described above, the pouch 30 of the pouch 20 with a valve is wound up in a roll shape on the semi-cylindrical members 142a and 142b. At this time, as described above, the pouch 20 with a valve is held so that the central axis L of the connecting member 40 is on the same axis as the central axis of the winding portion 142. Further, the tube 44 of the pouch 20 with a valve has a predetermined rigidity and extends substantially parallel to the central axis L from the tube connecting portion 43. Therefore, the take-up portion 142 sandwiches the pouch 30 so as to interpose the tube 44 inside the take-up portion 142 formed in a cylindrical shape (see FIG. 6). As a result, when the pouch 20 with a valve is wound into a roll shape, the tube 44 is wound into a roll shape on the winding portion 142, and it is possible to suppress a problem that the tube 44 is bent.

Further, the pair of pressing members 143a and 143b are formed with semi-cylindrical recesses 144a and 144b, and when the pair of pressing members 143a and 143b are close to each other, the pair of pressing members 143a and 143b are formed. The pouch 30 is clamped without hindering the rotation of the winding portion 142. In this way, the pair of pressing members 143a and 143b press the pouch 30 to apply tension to the pouch 30 of the valved pouch 20 wound on the semi-cylindrical members 142a and 142b, and the pouch 30 is applied. It is possible to suppress the occurrence of slack in the pouch 30 when the pouch is wound onto the semi-cylindrical members 142a and 142b. Further, the pouch 30 of the pouch 20 with a valve wound on the semi-cylindrical members 142a and 142b is housed in the space defined by the semi-cylindrical recesses 144a and 144b of the pair of pressing members 143a and 143b. (See FIG. 8 (d)). As a result, it is possible to prevent the pouch 30 of the pouch 20 with a valve wound in a roll shape from being rewound and unfolded before the tape T is attached to the pouch 30. In FIG. 6, the pair of semi-cylindrical members 142a and 142b and the pair of compression members 143a and 143b are shown separately in order to clarify the drawing.

The reduction device 140 has a pouch holding mechanism (not shown), and is configured to attach the tape T to the pouch 30 of the pouch 20 with a valve wound in a roll shape. As a result, the pouch 20 with a valve can be held in a rolled state. The pouch holding mechanism may hold the pouch 20 with a valve in a rolled state by using, for example, an adhesive.

Method of inspecting and reducing the pouch with a valve for a double container Next, a method of inspecting and reducing the pouch 20 with a valve shown in FIGS. 1 to 3 will be described with reference to FIGS. 7 and 8.

First, the pouch 20 with a valve is prepared (reference numeral S1 in FIG. 7). At this time, first, the pouch 30 is prepared. In this case, the pouch 30 is formed with an opening between the upper edges 34 of the pair of main surface sheets 32. Further, in parallel with preparing the pouch 30, the connecting member 40 and the valve 50 are prepared. Next, the upper portion of the pouch 30 is heat-sealed by heat-sealing the vicinity of the upper edge 34 of the pouch 30 and the pair of main surface sheets 32 are welded to the fixing portion 41 of the connecting member 40 at the central portion of the upper portion of the pouch 30. Close. Then, the housing 51 of the valve 50 is penetrated into the valve connecting portion 42 of the connecting member 40 attached to the pouch 30. The valve 50 may be penetrated into the valve connecting portion 42 of the connecting member 40 before the connecting member 40 is attached to the pouch 30.

Next, the inspection gas G is injected into the pouch 20 with a valve (reference numeral S2 in FIG. 7). At this time, the gas injection device 110 injects the inspection gas G while pushing the gas injection port 111 of the gas injection device 110 against the stem 52 of the pouch 20 with a valve. By pushing the gas injection port 111 against the stem 52 in this way, the stem 52 can be moved downward against the urging force of the elastic body 53, and the stem gasket 54 can be elastically deformed. As a result, the stem hole 52a is opened, the inside and the outside of the pouch 30 of the pouch 20 with a valve are communicated with each other, and the inspection gas G can be filled. In this case, for example, nitrogen gas may be used as the inspection gas G. Further, the injection amount of the inspection gas G may be 10% or more and 40% or less of the capacity of the pouch 20 with a valve, for example, as long as the pouch 30 can be expanded when the inside of the chamber 121 is depressurized as described later. As an example, when the full injection capacity of the pouch 20 with a valve is 200 ml, it can be 20 ml.

Next, the pouch 20 with a valve into which the inspection gas G is injected is installed in the chamber 121 (reference numeral S3 in FIG. 7). In this case, one pouch with a valve 20 is housed in each chamber 121. In this way, by inspecting a plurality of pouches with valves 20 at the same time, the working time of the inspection work can be shortened. Further, by accommodating one valve-equipped pouch 20 in the chamber 121, it is possible to easily identify the valve-equipped pouch 20 in which leakage occurs when the pressure in the chamber 121 changes.

Next, the inside of the chamber 121 is depressurized, and the leakage of the inspection gas G from the inside of the pouch 20 with a valve is inspected. At this time, first, the pressure inside the chamber 121 is reduced (reference numeral S4 in FIG. 7). In this case, the pressure inside the chamber 121 is reduced by driving the exhaust mechanism 122. That is, the pump 125 is started in a state where the on-off valve 124 provided in the exhaust passage 123 of the exhaust mechanism 122 is opened to exhaust the inside of the chamber 121. As a result, the pressure in the chamber 121 can be reduced. At this time, the pressure in the chamber 121 is measured by the pressure gauge 126, and the measured pressure value is transmitted as a signal to a control device (not shown). In this case, the pressure inside the chamber 121 may be reduced by the exhaust mechanism 122 until the pressure inside the chamber 121 becomes a desired value, for example, 100 Pa or more and 500 Pa or less. Then, after the pressure in the chamber 121 is reduced to a desired value, the on-off valve 124 provided in the exhaust passage 123 of the exhaust mechanism 122 is closed.

Next, the on-off valve 124 of the exhaust mechanism 122 is closed, and after a predetermined time has elapsed, the pressure in the chamber 121 is measured (reference numeral S5 in FIG. 7). At this time, the pressure in the chamber 121 is measured by the pressure gauge 126, and the measured pressure value is transmitted as a signal to a control device (not shown).

Next, if it is determined whether or not the pressure in the chamber 121 has changed (reference numeral S6 in FIG. 7), and if it is determined that the pressure in the chamber 121 has changed (YES in reference numeral S6 in FIG. 7), the valve. It is determined that the inspection gas G has leaked from the attached pouch 20, and the valved pouch 20 is discharged as a defective product (reference numeral S7 in FIG. 7). In this case, a control device (not shown) may notify the operator that the inspection gas G has leaked from the inside of the pouch 20 with a valve, for example, by an alarm sound. On the other hand, when it is determined that there is no change in the pressure in the chamber 121 (NO in reference numeral S6 in FIG. 7), it is determined that the inspection gas G has not leaked from the inside of the pouch 20 with a valve, and the pouch 20 with a valve is , Transported to the next process. The operator may visually check the pressure gauge 126 to determine whether or not the pressure in the chamber 121 has changed.

Next, the inspection gas G is removed from the inside of the pouch 20 with a valve (reference numeral S8 in FIG. 7). At this time, the degassing device 130 pushes the gas discharge port 131 of the degassing device 130 against the stem 52 of the pouch 20 with a valve to move the stem 52 downward, and the inspection gas G is discharged from the stem hole 52a. Discharge. At this time, the inspection gas G in the pouch 30 may be sucked and discharged by a pump (not shown). As a result, it is possible to shorten the working time of the discharging work of discharging the inspection gas G in the pouch 30.

Next, the pouch 20 with a valve is reduced (reference numeral S9 in FIG. 7). At this time, the pouch 20 with a valve is wound into a roll by the reduction device 140. In this case, first, the chuck 141 holds the valve 50 of the pouch 20 with a valve. At this time, the pouch 20 with a valve is held by the chuck 141 to the extent that it does not rotate.

Next, the take-up portion 142 is moved toward the pouch 20 with a valve along the central axis of the take-up portion 142. As a result, the pouch 30 of the pouch 20 with a valve is sandwiched by the semi-cylindrical members 142a and 142b of the winding portion 142. At this time, the take-up portion 142 sandwiches the pouch 30 so that the tube 44 is interposed inside the take-up portion 142 formed in a cylindrical shape. As a result, when the pouch 20 with a valve is wound into a roll shape, the tube 44 is wound into a roll shape on the winding portion 142, and it is possible to suppress a problem that the tube 44 is bent.

Next, as shown in FIG. 8A, the pair of pressing members 143a and 143b are close to each other to clamp the pouch 30. In this way, the pair of pressing members 143a and 143b press the pouch 30 to apply tension to the pouch 30 of the valved pouch 20 wound on the semi-cylindrical members 142a and 142b, and the pouch 30 is applied. It is possible to suppress the occurrence of slack in the pouch 30 when the pouch is wound onto the semi-cylindrical members 142a and 142b. Further, the pair of pinching members 143a and 143b are formed with semi-cylindrical recesses 144a and 144b, and even when the pair of pinching members 143a and 143b pinch the pouch 30, the winding is performed. The rotation of the portion 142 is not hindered. 8 (a)-(e) is a cross-sectional view showing a pouch 20 with a valve to be reduced, and is a view corresponding to FIG.

Next, the winding unit 142 rotates. As a result, as shown in FIGS. 8 (b) to 8 (d), the pouch 30 of the pouch 20 with a valve is wound around the winding portion 142 in a roll shape. At this time, as shown in FIG. 8D, the pouch 30 of the pouch 20 with a valve wound on the semi-cylindrical members 142a and 142b has a semi-cylindrical recess 144a of the pair of pressing members 143a and 143b. It is housed in the space defined by 144b. As a result, it is possible to prevent the pouch 30 of the pouch 20 with a valve wound in a roll shape from being rewound and unfolded before the tape T is attached to the pouch 30. After that, the pair of pressing members 143a and 143b are separated from each other, and the tape T is attached to the pouch 30 of the pouch 20 with a valve wound in a roll shape by a pouch holding mechanism (not shown). As a result, the pouch 20 with a valve is held in a wound state, and the insertion step of inserting the pouch 20 with a valve into the external container 10 can be facilitated.

Then, by pulling out the winding portion 142 from the pouch 20 with a valve wound in a roll shape, the pouch 20 with a valve wound in a roll shape can be obtained as shown in FIG. 8 (e).

In this way, the pouch 20 with a valve is reduced.

When filling the contents and the propellant into the double container 1 provided with the pouch 20 with a valve reduced in this way, first, the pouch 30 of the pouch 20 with a valve is inserted into the outer container 10.

Next, the propellant is filled between the pouch 30 and the outer container 10. Then, the valve 50 is pressed downward so that the mounting cup 55 of the valve 50 is fitted so as to be in contact with the curl portion 11a of the mouth portion 11 of the outer container 10, so that the pouch 20 with a valve is fitted to the outer container 10. Be stuck.

Then, the contents are filled into the pouch 30 from the stem 52 of the valve 50. In this way, the double container 1 is filled with the propellant and the contents. When the contents of the tape T holding the pouch 20 with a valve are filled, the tape T breaks due to the pressure of the contents, and the state in which the pouch 20 with a valve is wound is released.

As described above, according to the present embodiment, the inspection and reduction system 100 includes a gas injection device 110 and an inspection device 120 having an exhaust mechanism 122 for depressurizing the inside of the chamber 121 in which the pouch 20 with a valve is housed. The degassing device 130 for removing the inspection gas G from the inside of the pouch 20 with a valve and the reducing device 140 for reducing the pouch 20 with a valve are provided. Thereby, even after the valve 50 is attached to the pouch 30, the inspection gas G can be injected into the pouch 30 by the gas injection device 110. Further, by reducing the pressure in the chamber 121 in which the pouch 20 with a valve is housed, the inspection device 120 can inspect the leak of the pouch 20 with a valve. Further, after the inspection device 120 inspects the leak of the pouch 20 with a valve, the degassing device 130 can remove the inspection gas G from the inside of the pouch 20 with a valve. Therefore, the pouch with a valve can be removed by the reduction device 140. 20 can be easily reduced.

Further, according to the present embodiment, the inspection device 120 has a pressure gauge 126 for measuring the pressure in the chamber 121. This makes it possible to measure the change in pressure in the chamber 121. Therefore, the leak of the pouch 20 with a valve can be easily inspected.

Further, according to the present embodiment, the reduction device 140 winds the pouch 20 with a valve into a roll shape. As a result, the pouch 20 with a valve can be easily reduced. Therefore, the accommodating step when accommodating the pouch 30 of the pouch 20 with a valve in the outer container 10 can be facilitated.

In the present embodiment, an example in which the double container 1 is a double aerosol container in which a pressurized fluid serving as a propellant is filled between the external container 10 and the pouch 20 with a valve has been described. It is not limited to this. For example, the double container 1 may be a container such as a beer barrel applied to a beer server.

Further, in the present embodiment, an example in which the pouch 30 is a standing type pouch has been described, but the present invention is not limited to this. For example, the pouch 30 may be a flat pouch or a gusset type pouch.

Further, in the present embodiment, the case where the reduction device 140 winds up the pouch 20 with a valve has been described as an example, but the present invention is not limited to this. For example, the reduction device 140 may fold the pouch 20 with a valve. In this case, as shown in FIG. 9, the reduction device 140 may have a pair of folding members 145a and 145b.

The pair of folding members 145a and 145b includes a plurality of claw portions 146, each extending in parallel, and a plurality of connecting pieces 147 connecting the claw portions 146. Of these, one connecting piece 147 is connected to adjacent connecting pieces 147 by a connecting portion 148, and each connecting piece 147 is configured to be rotatable in a predetermined direction with respect to the adjacent connecting piece 147. ing.

In this modification, when the pouch 20 with a valve is reduced, the reduction device 140 folds the pouch 20 with a valve. At this time, first, as shown in FIG. 10A, the pouch 30 of the pouch 20 with a valve is sandwiched by the pair of folding members 145a and 145b. Next, as shown in FIG. 10B, by rotating each connecting piece 147 with respect to the adjacent connecting piece 147 in a predetermined direction, each connecting piece 147 overlaps with the adjacent connecting piece 147. As described above, the pair of folding members 145a and 145b are each folded. At this time, the pouch 30 sandwiched between the pair of folding members 145a and 145b has the claw portion 146 of one of the folding members 145a and the claw portion of the folding member 145b facing the claw portion 146 via the pouch 30. With 146, creases are formed and folded. Then, as shown in FIG. 10 (c), the tape T is attached to the folded pouch 30 by a pouch holding mechanism (not shown), and the pouch 20 with a valve is held in the folded state. After that, the pair of folding members 145a and 145b are removed from the folded pouch 20 with a valve, and as shown in FIG. 10D, the folded pouch 20 with a valve is obtained. Also in this case, the insertion step of inserting the pouch 20 with a valve into the outer container 10 can be facilitated.

Further, in the present embodiment, an example in which the inspection device 120 has the pressure gauge 126 has been described, but the present invention is not limited thereto. For example, the inspection gas G may be colored, and the change in color in the chamber 121 may be inspected in the step of inspecting the leakage of the inspection gas. In this case, since the leakage of the inspection gas G from the valved pouch 20 can be determined by the color change in the chamber 121, it is easy to determine whether or not the inspection gas G is leaking from the valved pouch 20. You can judge.

It is also possible to appropriately combine a plurality of components disclosed in the above-described embodiments and modifications as necessary. Alternatively, some components may be deleted from all the components shown in the above embodiments and modifications.

20 Pouch with valve 100 Inspection and reduction system for pouch with valve for double container 110 Gas injection device 120 Inspection device 121 Chamber 122 Exhaust mechanism 126 Pressure gauge 130 Degassing device 140 Reduction device G Inspection gas

Claims (10)

A method for inspecting and reducing pouches with valves for double containers.
The process of preparing a pouch with a valve and
The process of injecting inspection gas into the pouch with valve and
The process of installing the pouch with a valve in the chamber and
A step of depressurizing the inside of the chamber and inspecting the leakage of the inspection gas from the inside of the pouch with a valve.
The step of removing the inspection gas from the inside of the pouch with a valve and
A method for inspecting and reducing a pouch with a valve for a double container, which comprises a step of reducing the pouch with a valve. The method for inspecting and reducing a pouch with a valve for a double container according to claim 1, wherein in the step of inspecting the leakage of the inspection gas, a change in pressure in the chamber is inspected. The pouch with a valve for a double container according to claim 1, wherein the inspection gas is colored, and in the step of inspecting the leakage of the inspection gas, a change in color in the chamber is inspected. Inspection and reduction method. The inspection and reduction of the valved pouch for a double container according to any one of claims 1 to 3, wherein the valved pouch is wound into a roll in the step of reducing the valved pouch. Method. The method for inspecting and reducing a valved pouch for a double container according to any one of claims 1 to 3, wherein the valved pouch is folded in a step of reducing the valved pouch. An inspection and reduction system for a pouch with a valve for a double container and a pouch with a valve for a double container for reducing the pouch with a valve for a double container.
A gas injection device that injects inspection gas into a pouch with a valve,
An inspection device having a chamber in which the pouch with a valve is housed, an exhaust mechanism for depressurizing the inside of the chamber, and an inspection device.
A degassing device that removes the inspection gas from the inside of the pouch with a valve,
An inspection and reduction system for a pouch with a valve for a double container, which comprises a reduction device for reducing the pouch with a valve. The inspection and reduction system for a pouch with a valve for a double container according to claim 6, wherein the inspection device further includes a pressure gauge for measuring the pressure in the chamber. The inspection and reduction system for a pouch with a valve for a double container according to claim 6, wherein the inspection gas is colored. The inspection and reduction system for a pouch with a valve for a double container according to any one of claims 6 to 8, wherein the reduction device winds the pouch with a valve into a roll shape. The inspection and reduction system for a pouch with a valve for a double container according to any one of claims 6 to 8, wherein the reduction device folds the pouch with a valve.

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