JP2020019533A - Method of manufacturing double pressurized product - Google Patents

Abstract

To provide a method of manufacturing a double pressurized product efficiently.SOLUTION: In a method of manufacturing a double pressurized product 10 which fills with pressurized agents P and stock solution C in a double container 11 that consists of an outer container 13, an inner container 14, and a lid body 15, the method of manufacturing the double pressurized product 10 prepares the outer container 13, and the inner container 14 which is stored in the outer container 13, shrinks, and is filled with the stock solution C inside, mounts the lid body 15 on a mouth portion of the inner container 14 tightly (S4), releases shrinking of the inner container 14 (S5), fills with the pressurized agents P between the outer container 13 and the inner container 14 (Vp) through a gap of a mouth portion 13g of the outer container 13 and the mouth portion 14f of the inner container 14 (S6), and seals up the gap of the mouth portion 13g of the outer container 13 and the mouth portion 14f of the inner container 14 by ultrasonic welding of the lid body 15 (S7).SELECTED DRAWING: Figure 3

Description

  The present invention relates to a method for producing a double pressurized product.

  In Patent Document 1, a valve is fitted to the mouth of the inner container, and the inside of the inner container is made to have a negative pressure by sucking air in the inner container against the restoring force of the inner container. A double aerosol product in which a pressurizing agent is filled between the outer container and the inner container from between the mouth and the valve, the valve is fixed to the outer container and sealed, and then the undiluted solution is filled from the valve into the inner container. Is disclosed. In paragraphs [0046] and [0047] of the specification, the preform for the inner container is inserted into the preform for the outer container, and the obtained double preform is blow-molded to form the outer container and the inner container. A method of making a double bottle that is molded simultaneously is disclosed.

  Patent Literature 2 discloses an attachment that holds an outer container, a flexible inner container housed therein, and a valve provided at an upper end of the inner container, and is itself attached to and sealed to the outer container. A double pressurized container with a sleeve (lid) is disclosed. In addition, under-cup filling and ultrasonic welding were used, in which pressurized gas was filled between the outer sleeve and the inner container from between the mounting sleeve and the outer container, and then the periphery of the mounting sleeve was ultrasonically welded to the outer container. A manufacturing method is disclosed.

  Patent Literature 3 discloses a content storage container that includes a container main body and a valve storage portion that closes an opening of the container main body, and has a pressurizing agent and a stock solution filled therein. This content storage container is not provided with a valve, but is equipped with a cap with a valve or push button for used aerosol products.At the time of mounting, the valve closes the bottom of the valve storage part and operates the valve. To use.

JP, 2017-119534, A Japanese Patent No. 5138777 WO2015 / 80252

  In the manufacturing method of Patent Literature 1, the air inside the inner container is once suctioned to reduce the pressure, whereby the inner container is contracted and separated from the outer container, and then the undiluted solution is filled into the inner container through a valve. Therefore, it takes time to fill the stock solution.

  An object of the present invention is to solve the problems of the conventional production method and to provide a method for producing a double pressurized product that can efficiently produce a double pressurized product. A further object of the present invention is to provide an efficient manufacturing method which can be used for a replacement double pressurized product having no valve.

  The method for producing the double-pressurized product 10 of the present invention comprises the following steps: the outer container 13, the inner container 14 housed in the outer container 13, and the lid 15 closing the mouth of the outer container 13 and the inner container 14. A method for manufacturing a double pressurized product 10 in which a double container 11 is filled with a pressurizing agent P and a stock solution C, comprising an external container 13, which is housed in the external container 13, contracted by an external force, and And an inner container 14 filled with the undiluted solution C (S1 to S3, S11 to S12), the lid 15 is tightly attached to the mouth 14f of the inner container 14 (S4), and the inner container 14 is contracted. The external force is released (S5), and the pressurizing agent P is filled between the outer container 13 and the inner container 14 through the gap between the mouth 13g of the outer container 13 and the mouth 14f of the inner container 14 (S6), and the lid is formed. 15, the mouth 13g of the outer container 13 and the mouth of the inner container 14 14f to seal the gap (S7) is characterized by.

  In such a method of manufacturing the double-pressurized product 10, the inner container 14 may be compressed together by compressing the outer container 13 in the preparing step (S1 to S3).

  The compressing steps S2 and S12 may be performed before the stock solution C is filled in the inner container 14 (S2), or may be performed after the stock solution C is filled (S12). In the manufacturing methods S1 to S8 in which the outer container 13 and the inner container 14 are compressed together, the compression of the outer container 13 is released before the pressurizing agent P is filled between the outer container 13 and the inner container 14 ( S5) It is preferable to return to the original state elastically. In any of the above manufacturing methods, it is preferable that the gap between the outer container 13 and the lid 15, the gap between the inner container 14 and the lid 15, or both are sealed by ultrasonic welding (S7).

  In the production method of the present invention, the undiluted solution can be filled into the inner container from the mouth before the lid is attached to the inner container. Therefore, filling can be performed more efficiently than filling through a valve. Since the undiluted solution is an incompressible fluid, even if the contraction of the inner container is released, the inner container cannot return to its original shape when the lid is attached and air cannot flow in from the outside. Will be maintained. Therefore, it is easy to fill the pressurizing agent between the outer container and the inner container. Further, when the pressurizing agent is filled, the pressurizing agent does not enter the internal container.

  In such a method for manufacturing a double pressurized product, in the preparation step, when the outer container is compressed, the inner container can be contracted by a simple operation when the inner container is compressed together. Is easy to maintain.

  In the case where the step of compressing is performed before filling the stock solution into the inner container, the stock solution can be rapidly compressed because there is no stock solution during the compression operation. When the compressing step is performed after filling the inner container with the stock solution, the filling can be performed while leaving the head space, so that the stock solution can be easily filled. When the compression of the outer container is released and elastically returned to the original state before filling the pressurizing agent between the outer container and the inner container, the inner container does not expand but only the outer container expands. Therefore, it is possible to easily form a space for filling the pressurizing agent between them, and it is easy to fill the pressurizing agent.

  When the gap between the outer container and the lid, the gap between the inner container and the lid, or both are sealed by ultrasonic welding, the filling and sealing of the pressurizing agent can be performed continuously, so that it is efficient. is there.

1A is a cross-sectional view showing an example of a double pressurized product manufactured by the manufacturing method of the present invention, FIG. 1B is a cross-sectional view of a discharge member mounted on the double pressurized product, and FIG. It is sectional drawing of a heavy pressurized product. It is a partial process drawing showing one embodiment of the manufacturing method of the present invention. FIG. 3 is a partial process drawing following FIG. 2. It is a flowchart showing other embodiments of a stock solution filling process. FIG. 4 is a process chart showing an embodiment in which the same manufacturing method as in FIG. 2 is applied to another double pressurized product. FIG. 6A is a cross-sectional view of a discharge member mounted on the double pressurized product obtained by the manufacturing method of FIG. 5, and FIG. 6B is a cross-sectional view of a main part of the double pressurized product after mounting.

  First, an outline of a double pressurized product manufactured by the manufacturing method of the present invention will be described with reference to FIG. 1A. The double pressurized product 10 shown in FIG. 1A includes a double pressurized container 11, a stock solution C and a pressurizing agent (propellant) P filled in the double pressurized container 11. The double pressurized product 10 is sold as a set together with the discharge member 12 shown in FIG. 1B or in an unopened state in which the cap 34 is screwed halfway. The double pressurized product 10 is sold together with the discharge member 12, and is also sold alone for replacement. The ejection member 12 may be sold alone.

  The double pressurized container 11 includes an outer container 13, a flexible inner container 14 housed therein, and a lid 15 that seals the outer container 13 and the inner container 14. There are no valves or pumps. The inside of the inner container 14 is a stock solution storage chamber Vc for filling the stock solution C, and the space between the outer container 13 and the inner container 14 is a pressurized agent housing chamber Vp for filling the pressurized agent P. Before the pressurizing agent P is filled, there is almost no space since the inner surface of the outer container 13 and the outer surface of the inner container 14 are in close contact. Each of the storage chambers Vp and Vc is sealed by the lid 15.

  The outer container 13 includes a hemispherical bottom portion 13a, a cylindrical body portion 13b continuous from its upper end, a shoulder portion 13c continuous from its upper end, and a thick cylindrical neck portion 13d protruding upward from its upper end. Become. An external thread 13e is formed on the outer periphery of the neck 13d. Similarly to the outer container 13, the inner container 14 includes a bottom portion 14a, a body portion 14b, a shoulder portion 14c, and a neck portion 14d. An introduction groove (not shown) for filling a pressurizing agent is formed on the surface of the neck 14d of the inner container 14 or the inner surface of the neck 13d of the outer container 13.

  Each of the outer container 13 and the inner container 14 is made of a synthetic resin, particularly, a thermoplastic resin such as polyethylene terephthalate, polyethylene naphthalate, polyethylene, or polypropylene. It can be manufactured by putting a reform and blow molding the lower side of the shoulders 13c and 14c at the same time. Hereinafter, the one in which the inner container 14 is inserted into the outer container 13 and the lid 15 is not attached is referred to as a double container body 16.

  The lid 15 includes a bottomed cylindrical sealing portion 15a inserted into the neck portion 14d of the inner container 14, and an annular flange 15b connected to the upper end thereof. At the bottom 15c of the sealing portion 15a, an unsealed portion 15d having a reduced thickness is provided. The unsealed portion 15d can be formed by an annular thin portion or a weakened line such as an annular groove so as to be opened by the unsealing portion (puncture needle) 41 provided on the ejection member 12 of FIG. 1B.

  The flange 15b of the lid 15 is filled with the undiluted solution C or the pressurizing agent P, and is then subjected to ultrasonic welding, laser welding, high-frequency welding, or the like, to form the upper end surface 13f of the neck 13d of the outer container 13 and the upper end surface of the neck 14d of the inner container 14. 14e. Thereby, the gap between the opening 13g of the outer container 13 and the opening 14f of the inner container 14 and the opening of the opening 14f of the inner container 14 are simultaneously sealed. As the material of the lid 15, a thermoplastic resin having a high thermal bonding property with the outer container 13 or the inner container 14 is used. When the lid 15 is fixed by welding, the same material as the outer container 13 or the inner container 14 is preferably used. The lid 15 may be adhered with an adhesive in addition to welding.

  Next, a method of manufacturing the double pressurized product 10 will be described with reference to FIGS. As described above, the air nozzle 17 is inserted into the inside of the double container body 16 formed by blow molding from the double preform, and the inside is cleaned by air blowing (air blowing step S1). Next, the body 13b of the outer container 13 is sandwiched and clamped from both sides by the clamp member 18, and the external force of the compression is transmitted to the inner container 14 to shrink the internal volume of the double container body 16 (shrinking step S2). At this time, the compression is performed so that a head space is not generated in the internal container 14 when the undiluted solution C is filled, that is, the volume is reduced by an amount corresponding to the head space.

  Next, the stock solution C is filled into the inner container 14 while maintaining the compressed state (stock solution filling step S3). The amount of the undiluted solution C is preferably such that when the lid 15 is attached, the bottom of the lid 15 is in contact with the undiluted solution C and no void remains. Thereby, when the lid 15 is welded, the unsealed portion 15d is cooled by the stock solution C and does not melt. In addition, the discharge becomes smooth by leaving or reducing the gap.

  As the undiluted solution C, skin products such as facial cleanser, detergent, bath additive, moisturizer, cleansing agent, sunscreen, lotion, shaving agent, freshener, antiperspirant, disinfectant, disinfectant, pest repellent, etc., treatment Personal care products such as hair products such as agents, styling agents, hair dyes, food products such as whipped cream and olive oil, deodorants, fragrances, insecticides, insect repellents, pollen removers, herbicides, liquid fertilizers Household goods. However, it is not limited to these uses.

  Next, as shown in FIG. 3, the lid 15 is airtightly attached to the mouth 14f of the inner container 14 while maintaining the pressurized state, and the inner container 14 is sealed (lid attaching step S4). Next, the clamp member 18 is opened, and the compression of the outer container 13 is released. As a result, outside air enters between the outer container 13 and the inner container 14, and the outer container 13 elastically returns to its original shape (step of releasing external contraction force S5). On the other hand, since the inner container 14 is filled with the undiluted solution C and sealed with the lid 15, even if the compressive force (external force for contracting) by the clamp 18 is released, the inner container 14 does not return to its original shape and remains in the contracted state. is there. Therefore, the outer container 13 and the inner container 14 blow-molded from the double preform are separated smoothly, and the pressurized agent storage chamber Vp is formed therebetween.

  Next, the outer container 13 and the inner container 14 are set in the pressurizing agent filling device 20 provided with the ultrasonic welding machine 19, and the pressurizing agent storage chamber Vp is filled with the pressurizing agent P by filling under the cup (pressurizing agent). The filling step S6), and then the lid 15 is fixed to the outer container 13 and the inner container 14 by ultrasonic welding by the ultrasonic welding machine 19 (welding step S7). The pressurizing agent filling device 20 includes a cylindrical filling tool 23 having an opening at the lower side, and a horn 24 for ultrasonic welding, which is closed in an upper opening of the filling tool 23 and is provided in the filling tool 23 so as to be movable up and down. .

  At the lower end of the filling tool 23, an annular sealing material 25 is provided which is in contact with the shoulder 13c of the outer container 13. The pressurizing agent supply pipe 26 is connected to the filler 23. The pressurizing agent filling device 20 further includes a mechanism for causing the filling tool 23 and the external container 13 to approach each other in the axial direction and press each other. Such a pressing mechanism is constituted by a mechanism for elevating and lowering the filler 23 or an elevating mechanism 27L for elevating and lowering the tray 27 supporting the external container 13. The ultrasonic welding machine 19 includes an elevating mechanism 28 for elevating and lowering the horn 24 described above, and an annular seal member 29 allowing sliding is interposed between the elevating mechanism 28 and the filler 23.

  When filling the pressurizing agent P, first, the filler 23 and the outer container 13 are approached to each other, and the space between the filler 23 and the outer container 13 is sealed by the sealing material 25 below the filler 23. Next, the pressurizing agent P is supplied to the filler 23 from the pressurizing agent supply pipe 26. Thus, the gap between the upper end of the neck 13d of the outer container 13 and the flange 15b of the lid 15 and the gap between the opening 13g of the outer container 13 and the opening 14f of the inner container 14 further pass through the neck 13d of the outer container 13 and the inner container. The pressurizing agent P is filled in the pressurizing agent storage chamber Vp through the passage passing between the necks 14d of the fourteen undercups (pressurizing agent filling step S6).

  As the pressurizing agent P, a compressed gas such as nitrogen gas, compressed air, carbon dioxide gas and nitrous oxide gas is preferable. The pressure in the double pressurized container is increased by 0.1 to 0.5 MPa (25 ° C., gauge pressure) with a pressurizing agent, and particularly 0.3 to 0.5 MPa (25 ° C., gauge pressure) equivalent to that of a carbonated beverage. It is preferred that Further, the capacity of the outer container is preferably 30 to 500 ml. The capacity of the stock solution storage chamber Vc is preferably about 20 to 300 ml. The capacity of the pressurized agent storage chamber Vp is preferably about 10 to 200 ml.

  After filling with the pressurizing agent P, the horn 24 is lowered while maintaining the seal by the seal material 25, and the ultrasonic vibration is transmitted to the horn 24 in a state where the lid 15 is pressed downward. Thereby, the flange 15b of the lid 15 and the upper end surface 13f of the neck 13d of the outer container 13 and the upper end surface 14e of the neck 14d of the inner container 14 are ultrasonically welded (welding step S7). Thereby, a double pressurized product 10 is obtained.

  After welding, the filling tool 23 is raised or the tray 27 is lowered to take out the double pressurized product 10 from the pressurizing agent filling device 20. Next, it is confirmed that the internal pressure is within a predetermined range by the pressure measuring device 30 that detects the internal pressure of the double pressurized product 10 (pressure measuring step S8). The pressure measuring device 30 includes a grip 31 for pressing the body 13b of the outer container 13, a load meter 32 for detecting a pressing force by the grip, and a sensor for detecting a deformation amount of the body 13b. The internal pressure is measured based on the calibration curve of the volume.

  In the above-described method for producing a double-pressurized product, after filling the inner container 14 with the undiluted solution C, the inner container 14 is sealed with the lid 15 and the force (external force) sandwiched by the clamp members 18 is released, so that the outer container 13 Allow to return elastically. Therefore, the outer container 13 and the inner container 14 can be separated smoothly, and the pressurized agent storage chamber Vp can be easily formed.

  The double pressurized product 10 manufactured as described above is used in combination with the discharge member 12 shown in FIG. 1B. The discharge member 12 includes a cap 34 screwed with the male screw 13 e of the neck 13 d of the outer container 13, a valve 35 held by the cap 34, and an operation button 37 mounted on a stem 36 of the valve 35.

  The valve 35 includes a bottomed cylindrical housing 38, a stem 36 housed therein so as to be vertically movable, a spring 39 for urging the stem 36 upward, and a space between the upper end of the housing 38 and the cap 34. And a stem rubber 40 interposed therebetween. At the lower end of the housing 38, there is provided a thin tubular opening 41 projecting downward, and a seal member 42 such as an O-ring is mounted on the outer periphery of the lower portion of the housing 38. The lower end of the opening portion 41 is sharpened so that the opened portion 15d of the bottom 15c of the lid 15 can be easily broken. The seal member 42 at the lower portion of the housing 38 seals the space between the inner peripheral surface of the sealing portion 15a of the lid 15 and the housing 38 at the time of opening and after opening.

  At the time of distribution and sale, the double pressurized product 10 and the discharge member 12 are provided with the cap 34 attached to the outer container 13 and loosely screwed together to temporarily connect them. In this state, the seal member 42 is not in contact with the inner surface of the sealing portion 15a. When used by the user, the cap 34 is screwed. Thereby, the seal member 42 seals between the lid 15 and the housing 38. When the cap 34 is further screwed, the lower end of the unsealing portion 41 of the housing 38 pierces the unsealed portion 15d of the lid 15 to communicate the inside of the housing 38 with the undiluted liquid storage chamber Vc to obtain a discharge product (see FIG. 1C).

  Since the stock solution C in the stock solution storage chamber Vc is pressurized by the pressurizing agent P via the internal container 14, when the user presses the operation button 37, the stem 36 descends, the stem rubber 40 bends, and the stem rubber is bent. A hole is opened, and the stock solution C in the inner container 14 is discharged to the outside via the opening portion 41, the housing 38, the stem 36, and the operation button 37. When the pressing is stopped, the stem 36 rises, and the discharge is stopped. Since the pressurized agent storage chamber Vp filled with the pressurized agent P is closed and is not in communication with the outside or the undiluted solution storage chamber Vc, the pressurized agent P does not leak to the outside.

  Next, another embodiment of the method for producing a double pressurized product of the present invention will be described with reference to FIG. First, the inside of the double container body 16 is cleaned by air blowing (air blowing step S1). Then, the stock solution C is filled into the inner container 14 (stock solution filling step S11). Next, the body portion 13b of the outer container 13 is sandwiched and clamped from both sides by the clamp members 18 to compress the volume of the inner container 14 (shrinking step S12). At this time, the compression is performed so that the head space Hs in the inner container 14 is eliminated, that is, the volume corresponding to the head space is reduced.

  Thereafter, as in the above-described embodiment, the lid 15 is hermetically mounted on the mouth of the inner container 14 while maintaining the pressurized state as shown in FIG. Then, the clamp member 18 is opened, and a contraction external force releasing step S5 for releasing the compression of the external container 13 is performed. Further, a pressurizing agent filling step S6 for filling the pressurizing agent chamber Vp with the pressurizing agent P under the cup, a welding step S7 for fixing the lid 15 to the outer container 13 and the inner container 14 by ultrasonic welding, and a pressure measuring step S8. In that order.

  Also in the manufacturing method of FIG. 4, the inner container 14 filled with the undiluted solution C and contracted is closed by the lid, and then the outer container 13 and the inner container 14 are separated smoothly in order to release the force for pinching the outer container 13. be able to.

  FIG. 5 is substantially the same as the manufacturing method of FIGS. 4 and 3 except that a double container body 46 and a lid 45 different from those of the above embodiment are used. Also in this manufacturing method, the double container main body 46 including the external container 43 and the internal container 44 is manufactured, and the inner container 44 of the obtained double container main body 46 is filled with the undiluted solution C with a head space Hs left therebetween ( Stock solution filling step S11).

  In the outer container 13 and the inner container 14 shown in FIG. 4 and the like, the shapes of the bottom 13a and the bottom 14a are hemispherical with high pressure resistance. However, in the outer container 43 and the inner container 44 in FIG. The perimeter is flat and the center protrudes upward. Therefore, it can be stably mounted on a flat surface. As shown in FIG. 6A, the upper end of the inner container 44 protrudes from the upper end of the outer container 43, and a small-diameter flange 44g is formed on the upper end of the inner container 44 to be engaged with the upper end surface 43f of the outer container 43. Have been. Reference numeral 43h is a flange-like support portion for hooking during transportation. Reference numeral 44i denotes a groove serving as a passage when filling the pressurizing agent with the under cup, and is formed from the lower surface of the flange 44g of the inner container 44 to the surface of the neck portion 44d.

  Subsequent to the stock solution filling step S11, a shrinking step S12 is performed in which the body 43b of the outer container 43 is sandwiched and compressed by the clamp members 18 from both sides to compress the volume of the inner container 44. At this time, the compression is performed so that the head space Hs in the inner container 44 is almost eliminated, that is, the volume corresponding to the head space is reduced.

  Then, a lid mounting step S4 of mounting the lid 45 and sealing the inner container 44 is performed. As shown in FIG. 6A, the lid 45 includes a cup-shaped sealing portion 45a and a flange 45b extending from an upper end thereof. The sealing portion 45a of the lid 45 includes a fitting tube portion 45e fitted to the inner surface of the mouth portion 44f of the inner container 44, a cylindrical sealing tube portion 45f thinner than the fitting tube portion 45e, and a bottom portion 45c. The flange 45b of the lid 45 includes an annular disk portion 45g that extends radially outward from the upper end of the fitting cylindrical portion 45e, and an outer cylindrical portion 45h that extends downward from the outer edge of the annular disk portion 45g. The annular disk portion 45g is a portion welded to the upper end surface of the inner container 44, and the outer cylinder portion 45h is a portion whose lower end surface is welded to the upper end surface 43f of the outer container 43.

Following the lid mounting step S4, the clamp member 18 is opened, and a contraction external force releasing step S5 for releasing the compression of the external container 43 is performed. At this time, the outer container 43 returns to its original shape due to elasticity, but the inner container 44 is kept in a contracted state because it is sealed with the lid 45. Thereby, air is introduced between the outer container 43 and the inner container 44 to form a space (pressurizing agent storage chamber Vp) for filling the pressurizing agent.

  After that, it is the same as the above-described embodiment. The pressurizing agent filling step S6 in which the pressurizing agent C is filled between the outer container 43 and the outer container 44 by undercup filling by the pressurizing agent filling device 20 of FIG. Is performed. Subsequently, a welding step S7 for fixing the lid 45 to the outer container 43 and the inner container 44 by ultrasonic welding, and a pressure measuring step S8 are performed in this order. Thereby, a double pressurized product 50 is obtained.

  For example, a discharge member 52 shown in FIG. 6A is attached to the obtained double pressurized product 50. This discharge member 52 is substantially the same as the discharge member 12 of FIG. 1B. Then, by the consumer screwing the cap 34 of the discharge member 52 into the male screw 43e of the neck 43d of the outer container 43, the unsealing portion 41 at the lower end of the housing 38 can break the unsealing portion 45d of the lid 45 and open it. (See FIG. 6B). Reference numeral 41a in FIG. 6B denotes a passage, and reference numeral 42 denotes a sealing material. After that, the stock solution C is discharged by pressing the push button 37 attached to the stem 36. When the stock solution C is exhausted, the discharge member 52 can be used repeatedly by replacing the discharge member with a new double pressurized product.

  Although the preferred embodiments have been described above, the present invention is not limited to these embodiments, and can be changed without departing from the spirit of the invention. For example, the preform of the heated inner container may be inserted into a previously formed outer container, and the inner surface of the outer container may be blow-molded to form a double container body.

  In the embodiments of FIGS. 1A to 1C and FIGS. 2 to 4, the bottoms of the outer container 13 and the inner container 14 are hemispherical, and the bottoms of the outer container 43 and the inner container 44 of FIG. , And may be of the petaloid type.

DESCRIPTION OF SYMBOLS 10 Double pressurized product 11 Double pressurized container C Undiluted solution P Pressurizing agent 12 Discharge member 13 Outer container 13a Bottom 13b Trunk 13c Shoulder 13d Neck 13e Male screw 13f Top end 13g Mouth 14 Inner container 14a Bottom 14b Trunk 14c Shoulder portion 14d Neck portion 14e Upper end surface 14f Mouth portion Vc Stock solution storage chamber Vp Pressurized agent storage chamber 15 Lid 15a Sealing portion 15b Flange 15c Bottom portion 15d Unsealed portion 16 Double container main body 17 Air nozzle 18 Clamp member S1 Air blow process S2 Shrinking step S3 Undiluted liquid filling step S4 Lid mounting step S5 Shrinkage external force releasing step 19 Ultrasonic welding machine 20 Pressurizing agent filling apparatus S6 Pressurizing agent filling step S7 Welding step S8 Pressure measuring step 23 Filler 24 Horn 25 Sealing material 26 Pressure agent supply pipe 27 Receiving tray 27L Elevating mechanism 28 Elevating mechanism 29 Sealing material 30 Pressure measuring device 31 Cap 32 Load cell 34 Cap 35 Valve 36 Stem 37 Operation button 38 Housing 39 Spring 40 Stem rubber 41 Opening part 41a Passage 42 Seal member S11 Stock solution filling step S12 Shrinking step Hs Headspace S13 Shrinking step 43 External container 43a Bottom part 43b Body 43d Neck 43e Male thread 43f Upper end surface 43h Support 44 Internal container 44a Bottom 44d Neck 44f Mouth 44g Flange 44i Groove 45 to be a passage 45 Cover 45a Sealing part 45b Flange 45c Bottom 45d Unsealed part 45e Fitting cylinder part 45f Sealing Tube part 45g Annular disk part 45h Outer tube part 46 Double pressurized container 50 Double pressurized product 52 Discharge member

Claims (6)

An external container, an internal container accommodated in the external container, and a double container comprising a lid closing the mouth of the external container and the internal container, a double pressurized product filled with a pressurizing agent and a stock solution. A manufacturing method,
Prepare an outer container and an inner container housed in the outer container, contracted by an external force, and filled with a stock solution,
Closely attach the lid to the mouth of the inner container,
Release the external force to shrink the inner container,
Fill the pressurizing agent between the outer container and the inner container through the gap between the outer container mouth and the inner container mouth,
The lid seals the gap between the mouth of the outer container and the mouth of the inner container,
Manufacturing method of double pressurized products.   The method of manufacturing a double-pressurized product according to claim 1, wherein in the preparing step, the inner container is compressed by compressing the outer container, thereby contracting the inner container.   The method for producing a double-pressurized product according to claim 2, wherein the step of compressing is performed before filling the stock solution into the inner container.   3. The method for producing a double-pressurized product according to claim 2, wherein the step of compressing is performed after filling the stock solution into the inner container.   The double pressurized product according to any one of claims 2 to 4, wherein before the pressurizing agent is filled between the outer container and the inner container, the outer container is decompressed and elastically returned to the original state. Manufacturing method.   The method for manufacturing a pressurized product according to any one of claims 1 to 5, wherein a gap between the outer container and the lid, a gap between the inner container and the lid, or both are sealed by ultrasonic welding.

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