JP7186537B2 - Method for manufacturing double-pressed products - Google Patents

Description

The present invention relates to a method of manufacturing a double pressed product.

In Patent Document 1, a valve is fitted to the mouth of the inner container, and air inside the inner container is sucked against the restoring force of the inner container to create a negative pressure inside 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 the undiluted solution is filled from the valve into the inner container. is disclosed. In addition, 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 manufacturing a co-moulded double bottle is disclosed.

Patent Literature 2 discloses an attachment that holds an outer container, a flexible inner container housed therein, and a valve provided at the upper end of the inner container, which itself is attached to the outer container for sealing. A double pressurized container with a sleeve is disclosed. In addition, pressurized gas is filled between the outer container and the inner container from between the mounting sleeve and the outer container, and then the circumference of the mounting sleeve is ultrasonically welded to the outer container, which is a combination of undercup filling and ultrasonic welding. A method of manufacture is disclosed.

Patent Literature 3 discloses a content-accommodating container that includes a container body and a valve accommodating portion that closes the opening of the container body, and that is filled with a pressurizing agent and a concentrate. This content container does not have a valve and is fitted with a used aerosol product valve and a cap with a push button which, when fitted, opens the closure at the bottom of the valve housing and operates the valve. to use.

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

In the manufacturing method of Patent Document 1, the air inside the inner container is once sucked to reduce the pressure, thereby contracting the inner container and separating it from the outer container, and then filling the inner container with the stock solution through the valve. Therefore, it takes a long time to fill the undiluted solution.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the problems of the conventional manufacturing methods and to provide a method for manufacturing a double-pressed product that can efficiently manufacture the double-pressed product. It is a further object of the present invention to provide an efficient manufacturing method that can be used for replacement double pressurized products that do not have valves.

The method for manufacturing the double-pressurized product 10 of the present invention comprises an outer container 13, an inner container 14 accommodated in the outer container 13, and a lid 15 for closing the mouths of the outer container 13 and the inner container 14. A method for producing a double-pressurized product 10 in which a pressurizing agent P and a concentrate C are filled in a double container 11, which includes an outer container 13 and an inner container 13. The inner container 14 filled with the stock solution C is prepared (S1-3, S11-12), the lid 15 is tightly attached to the mouth portion 14f of the inner container 14 (S4), and the inner container 14 is contracted. The external force is released (S5), the pressurizing agent P is filled between the outer container 13 and the inner container 14 through the gap between the mouth portion 13g of the outer container 13 and the mouth portion 14f of the inner container 14 (S6), and the lid body 15 seals the gap between the mouth portion 13g of the outer container 13 and the mouth portion 14f of the inner container 14 (S7).

In the 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 steps (S1-3).

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

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

In such a method for producing a double-pressurized product, when the inner container is compressed together with the outer container in the preparing step, the inner container can be shrunk by a simple operation, and the shrunk state is easy to maintain.

When the compressing step is performed before the inner container is filled with the stock solution, there is no stock solution during the compression operation, so the compression can be performed quickly. When the compressing step is performed after the stock solution is filled in the inner container, the stock solution can be easily filled because the head space can be left. If the compression of the outer container is released and elastically returned to its original state before the pressurizing agent is filled between the outer container and the inner container, the inner container does not expand, and only the outer container expands. Therefore, a space to be filled with the pressurizing agent can be easily formed between the two, and the filling of the pressurizing agent is also easy.

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

FIG. 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 attached to the double-pressurized product, and FIG. 1 is a cross-sectional view of a heavy press product; FIG. It is a partial process drawing which shows one Embodiment of the manufacturing method of this invention. FIG. 3 is a partial process diagram following FIG. 2; FIG. 10 is a process diagram showing another embodiment of the undiluted solution filling process. FIG. 3 is a process diagram showing an embodiment in which a manufacturing method similar to that of FIG. 2 is applied to another double-pressed product; 6A is a cross-sectional view of a discharge member attached to the double pressurized product obtained by the manufacturing method of FIG. 5, and FIG. 6B is a cross-sectional view of the main part of the double pressurized product after attachment.

First, referring to FIG. 1A, the outline of the double-pressed product manufactured by the manufacturing method of the present invention will be described. A double-pressurized product 10 shown in FIG. 1A comprises a double-pressurized container 11 and a stock solution C and a pressurizing agent (propellant) P filled in the double-pressurized container 11 . The double pressurized product 10 is sold either as a set together with the dispensing member 12 shown in FIG. 1B or in an unopened state with the cap 34 partially screwed on. The dual pressurization product 10 is sold with the discharge member 12, and also separately as a replacement. The ejection member 12 may also be sold separately.

The double pressurized container 11 comprises an outer container 13 , a flexible inner container 14 housed therein, and a lid 15 for sealing the outer container 13 and the inner container 14 . It has no valves or pumps. The inside of the internal container 14 is the concentrate storage chamber Vc filled with the concentrate C, and the space between the outer container 13 and the internal container 14 is the pressurizing agent storage chamber Vp filled with the pressurizing agent P. In addition, since the inner surface of the outer container 13 and the outer surface of the inner container 14 are in close contact before the pressurizing agent P is filled, there is almost no space. Each storage chamber Vp, Vc is sealed with a lid 15 .

The outer container 13 comprises a hemispherical bottom portion 13a, a cylindrical body portion 13b continuing from its upper end, a shoulder portion 13c continuing from its upper end, and a thick cylindrical neck portion 13d protruding upward from its upper end. Become. A male thread 13e is formed on the outer circumference of the neck portion 13d. Like the outer container 13, the inner container 14 also comprises a bottom portion 14a, a body portion 14b, a shoulder portion 14c and a neck portion 14d. The surface of the neck portion 14d of the inner container 14 or the inner surface of the neck portion 13d of the outer container 13 is formed with an introduction groove (not shown) for filling the pressurizing agent.

Both the outer container 13 and the inner container 14 are made of a synthetic resin, particularly a thermoplastic resin such as polyethylene terephthalate, polyethylene naphthalate, polyethylene, or polypropylene. It can be manufactured by reforming and simultaneously blow-molding the portion below the shoulders 13c and 14c. Hereinafter, a double container body 16 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 is composed of a bottomed cylindrical sealing portion 15a inserted into the neck portion 14d of the internal container 14, and an annular flange 15b continuing to the upper end of the sealing portion 15a. The bottom portion 15c of the sealing portion 15a is provided with a thin-walled unsealable portion 15d. The to-be-opened portion 15d can be formed by a weakened line such as an annular thin-walled portion or an annular groove so that it can be easily opened by the opening portion (puncture needle) 41 provided in the discharge member 12 of FIG. 1B.

The flange 15b of the lid body 15 is formed by ultrasonic welding, laser welding, high-frequency welding, or the like after the undiluted solution C or the pressurizing agent P is filled. 14e. Thereby, the gap between the mouth portion 13g of the outer container 13 and the mouth portion 14f of the inner container 14 and the opening of the mouth portion 14f of the inner container 14 are simultaneously sealed. The material of the lid 15 is a thermoplastic resin having high thermal bondability with the outer container 13 and the inner container 14, and it is preferable to use the same material as the outer container 13 and the inner container 14 when fixing by welding. The lid body 15 may be adhered with an adhesive instead of being welded.

Referring now to Figures 2 and 3, the method of making the double press product 10 will be described. The air nozzle 17 is inserted into the inside of the double container main body 16 which is molded by blow molding from the double preform as described above, and the inside is cleaned by blowing air (air blowing step S1). Next, the body portion 13b of the outer container 13 is clamped and compressed from both sides by the clamp members 18, and the external force of compression is transmitted to the inner container 14, causing the inner volume of the double container body 16 to contract (contracting step S2). At this time, the inner container 14 is compressed so as not to create a head space when the stock solution C is filled, that is, to reduce the volume corresponding to the head space.

Next, while maintaining the compressed state, the inner container 14 is filled with the stock solution C (stock solution filling step S3). The amount of the stock solution C is preferably such that when the lid 15 is attached, the bottom of the lid 15 contacts the stock solution C, leaving no voids. As a result, the unsealable portion 15d is cooled by the undiluted liquid C when the lid body 15 is welded, and does not melt. In addition, by eliminating or reducing the voids, ejection becomes smooth.

Concentrate solution C includes skin products and treatments such as face wash, detergent, bath powder, moisturizer, cleansing agent, sunscreen, lotion, shaving agent, cooling agent, antiperspirant, disinfectant, pest repellent, etc. Personal products such as hair products such as conditioners, styling agents, hair dyes, foods such as whipped cream and olive oil, deodorants, air fresheners, insecticides, insect repellents, pollen removers, herbicides, liquid fertilizers, etc. Household items, etc. However, it is not limited to these uses.

Next, as shown in FIG. 3, the lid 15 is airtightly attached to the opening 14f of the internal container 14 while maintaining the pressurized state to seal the internal container 14 (lid attachment step S4). The clamp member 18 is then opened to release the compression of the outer container 13 . 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 (contraction external force releasing step S5). On the other hand, since the inner container 14 is filled with the stock solution C and sealed with the lid 15, it does not return to its original shape even when the compressive force (external force for contraction) by the clamp 18 is released, and remains in the contracted state. be. Therefore, the outer container 13 and the inner container 14 blow-molded from the double preform are smoothly separated, and the pressurizing agent storage chamber Vp is formed therebetween.

Next, the outer container 13 and the inner container 14 are set in a pressurizing agent filling device 20 equipped with an ultrasonic welder 19, and the pressurizing agent storage chamber Vp is filled with the pressurizing agent P by under-cup filling (pressurizing agent After the filling step S6), the cover 15 is adhered 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 is composed of a cylindrical filling tool 23 with a lower opening and a horn 24 for ultrasonic welding which closes the upper opening of the filling tool 23 and is provided in the filling tool 23 so as to be able to move up and down. .

A ring-shaped seal member 25 is provided at the lower end of the filling tool 23 to contact the shoulder portion 13 c of the outer container 13 . A pressurizing agent supply pipe 26 is connected to the filling tool 23 . The pressurizing agent filling device 20 further includes a mechanism for bringing the filling tool 23 and the outer container 13 closer to each other in the axial direction and pressing them against each other. Such a pressing mechanism is constituted by a lifting mechanism 27L for lifting and lowering the filling tool 23 or the tray 27 supporting the outer container 13. As shown in FIG. The ultrasonic welding machine 19 has an elevating mechanism 28 for elevating the horn 24, and between the elevating mechanism 28 and the filler 23, an annular sealing material 29 is interposed to allow sliding.

When filling the pressurizing agent P, first, the filler 23 and the outer container 13 are brought close to each other, and the gap between the filler 23 and the outer container 13 is sealed by the sealing material 25 under the filler 23 . Then, the pressurizing agent P is supplied to the filler 23 from the pressurizing agent supply pipe 26 . As a result, through the gap between the upper end of the neck portion 13d of the outer container 13 and the flange 15b of the lid 15, the gap between the opening portion 13g of the outer container 13 and the opening portion 14f of the inner container 14, the neck portion 13d of the outer container 13 and the inner container The pressurizing agent P is under-cup-filled into the pressurizing agent storage chamber Vp through the passage passing between the neck portions 14d of the nozzle 14 (pressurizing agent filling step S6).

The pressurizing agent P is preferably a compressed gas such as nitrogen gas, compressed air, carbon dioxide gas, or nitrous oxide gas. The pressure in the double pressurized container is increased to 0.1 to 0.5 MPa (25°C, gauge pressure), especially the same pressure as carbonated beverages 0.3 to 0.5 MPa (25°C, gauge pressure). is preferred. Also, the capacity of the external container is preferably 30 to 500 ml. The volume of the stock solution storage chamber Vc is preferably about 20 to 300 ml. The volume of the pressurizing agent storage chamber Vp is preferably about 10 to 200 ml.

After the filling of the pressurizing agent P, the horn 24 is lowered while maintaining the sealing by the sealing material 25, and the ultrasonic vibration is transmitted to the horn 24 while the lid body 15 is pressed downward. As a result, the flange 15b of the lid 15, the upper end surface 13f of the neck portion 13d of the outer container 13, and the upper end surface 14e of the neck portion 14d of the inner container 14 are ultrasonically welded (welding step S7). A double pressed product 10 is thereby 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, the pressure measuring device 30 for detecting the internal pressure of the double pressurized product 10 confirms that the internal pressure is within a predetermined range (pressure measuring step S8). The pressure measuring device 30 includes a grip 31 that presses the body portion 13b of the outer container 13, a load meter 32 that detects the pressure applied by the grip, and a sensor that detects the amount of deformation of the body portion 13b. Internal pressure is measured based on a volume calibration curve.

In the method for manufacturing a double-pressurized product, after the inner container 14 is filled with the stock solution C, the inner container 14 is sealed with the lid 15, and the pinching force (external force) by the clamp member 18 is released, so that the outer container 13 is opened. Allow to return elastically. Therefore, the outer container 13 and the inner container 14 can be smoothly separated, and the pressurizing agent storage chamber Vp can be easily formed.

The dual pressurized product 10 produced as described above is used in combination with the dispensing member 12 shown in FIG. 1B. The discharge member 12 comprises a cap 34 screwed onto the external thread 13e of the neck 13d of the outer container 13, a valve 35 held by the cap 34, and an operation button 37 attached to the stem 36 of the valve 35. As shown in FIG.

The valve 35 includes a cylindrical housing 38 with a bottom, a stem 36 housed therein so as to be vertically movable, a spring 39 for urging the stem 36 upward, and a spring between the upper end of the housing 38 and the cap 34 . It consists of a stem rubber 40 interposed in. The lower end of the housing 38 is provided with a thin cylindrical opening portion 41 protruding downward, and a sealing member 42 such as an O-ring is attached to the outer periphery of the lower portion of the housing 38 . The lower end of the unsealable portion 41 is sharpened so as to easily break the unsealable portion 15d of the bottom portion 15c of the lid 15. As shown in FIG. A sealing member 42 at the bottom of the housing 38 seals between the inner peripheral surface of the sealing portion 15a of the lid 15 and the housing 38 during and after opening.

The double-pressurized product 10 and the discharge member 12 are temporarily connected by attaching the cap 34 to the outer container 13 and loosely screwing them together at the time of distribution and sale. 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 on. Thereby, the sealing member 42 seals between the lid body 15 and the housing 38 . When the cap 34 is further screwed in, the lower end of the unsealable portion 41 of the housing 38 breaks through the unsealable portion 15d of the lid 15, allowing the inside of the housing 38 and the concentrate storage chamber Vc to communicate with each other to produce a discharged product (see FIG. 1C).

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

Next, referring to FIG. 4, another embodiment of the method of manufacturing the double-pressed product of the present invention will be described. First, the inside of the double container main body 16 is cleaned by air blowing (air blowing step S1). Next, the inner container 14 is filled with the stock solution C (stock solution filling step S11). Next, the body portion 13b of the outer container 13 is clamped from both sides by the clamp members 18 and compressed to contract the volume of the inner container 14 (contraction step S12). At this time, the internal container 14 is compressed so that the head space Hs disappears, that is, the volume corresponding to the head space is reduced.

Thereafter, the process is the same as in the above-described embodiment, and as shown in FIG. 3, the lid 15 is airtightly attached to the mouth of the internal container 14 while maintaining the pressurized state, and the internal container 14 is sealed in the lid mounting step S4. , the clamp member 18 is opened, and the contraction external force releasing step S5 for releasing the compression of the outer container 13 is performed. Further, a pressurizing agent filling step S6 of under-cup-filling the pressurizing agent P into the pressurizing agent storage chamber Vp, a welding step S7 of fixing the lid body 15 to the outer container 13 and the inner container 14 by ultrasonic welding, and a pressure measuring step S8. in that order.

In the manufacturing method of FIG. 4 as well, the inner container 14 is filled with the stock solution C, and the contracted inner container 14 is sealed with a lid. be able to.

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

In the outer container 13 and the inner container 14 shown in FIG. 4 and the like, the bottom portion 13a and the bottom portion 14a are formed in hemispherical shapes with high pressure resistance. The perimeter is flat and the central part protrudes upward. Therefore, it can be stably placed 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 the upper end of the inner container 44 is formed with a small-diameter flange 44g that engages with the upper end surface 43f of the outer container 43. It is Reference numeral 43h denotes a flange-like support portion for hooking during transportation. Reference numeral 44i denotes a groove that serves as a passage for under-cup filling of the pressurizing agent, and is formed from the lower surface of the flange 44g of the internal container 44 to the surface of the neck portion 44d.

Following the stock solution filling step S11, a shrinking step S12 is performed in which the body portion 43b of the outer container 43 is clamped from both sides by clamping members 18 and compressed to shrink the volume of the inner container 44. As shown in FIG. At this time, the internal container 44 is compressed so that the head space Hs is almost eliminated, that is, the volume corresponding to the head space is reduced.

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

Following the lid mounting step S4, the clamp member 18 is opened to release the compression of the outer container 43, which is the contraction external force releasing step S5. At this time, the outer container 43 returns to its original shape due to its elasticity, but the inner container 44 is sealed by the lid 45 and thus maintains the contracted state. As a result, air is introduced between the outer container 43 and the inner container 44 to form a space (pressurizing agent storage chamber Vp) filled with the pressurizing agent.

After that, the process is the same as in the above-described embodiment, and 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 under-cup filling by the pressurizing agent filling device 20 of FIG. is done. Subsequently, a welding step S7 for fixing the cover 45 to the outer container 43 and the inner container 44 by ultrasonic welding, and a pressure measuring step S8 are performed in that order. A double pressed product 50 is thereby obtained.

The resulting double pressurized product 50 is fitted with a discharge member 52, for example as shown in FIG. 6A. The ejection member 52 is substantially similar to ejection member 12 of FIG. 1B. When the consumer screws the cap 34 of the discharge member 52 onto the external thread 43e of the neck portion 43d of the outer container 43, the unsealable portion 45d of the lid 45 is broken by the unsealing portion 41 at the lower end of the housing 38 to open the container. (See Figure 6B). Reference numeral 41a in FIG. 6B is a passage, and reference numeral 42 is a sealing member. After that, the push button 37 attached to the stem 36 is pressed to discharge the undiluted solution C. When the concentrate C is exhausted, the dispensing member 52 can be used repeatedly by replacing the dispensing member with a new double pressurized product.

Although preferred embodiments have been described above, the present invention is not limited to these embodiments, and can be modified without departing from the scope of the invention. For example, the double container body may be formed by inserting a heated preform of the inner container into a preformed outer container, and blow-molding the inner surface of the outer container as a mold.

1A-C and 2-4, the bottoms of outer container 13 and inner container 14 are hemispherical, and the bottoms of outer container 43 and inner container 44 in FIG. 5 are flat. , may be of the petaloid type.

10 Double pressurized product 11 Double pressurized container C Stock solution P Pressurizing agent 12 Discharge member 13 Outer container 13a Bottom 13b Body 13c Shoulder 13d Neck 13e Male screw 13f Upper end face 13g Mouth 14 Inner container 14a Bottom 14b Body 14c Shoulder 14d Neck 14e Upper end surface 14f Mouth Vc Undiluted solution storage chamber Vp Pressurizing agent storage chamber 15 Lid 15a Sealing portion 15b Flange 15c Bottom 15d Unsealable portion 16 Double container main body 17 Air nozzle 18 Clamp member S1 Air blowing step S2 Contraction step S3 Undiluted solution filling step S4 Lid attachment step S5 Contraction external force release step 19 Ultrasonic welding machine 20 Pressurizing agent filling device S6 Pressurizing agent filling step S7 Welding step S8 Pressure measurement step 23 Filling tool 24 Horn 25 Sealing material 26 Pressure agent supply pipe 27 Receiving plate 27L Elevating mechanism 28 Elevating mechanism 29 Sealing material 30 Pressure measuring device 31 Grip 32 Load meter 34 Cap 35 Valve 36 Stem 37 Operation button 38 Housing 39 Spring 40 Stem rubber 41 Opening part 41a Passage 42 Sealing member S11 Undiluted solution Filling step S12 Shrinking step Hs Headspace S13 Shrinking step 43 Outer container 43a Bottom 43b Body 43d Neck 43e Male screw 43f Upper end surface 43h Support 44 Internal container 44a Bottom 44d Neck 44f Mouth 44g Flange 44i Channel groove 45 Lid 45a Sealing portion 45b Flange 45c Bottom portion 45d Unsealable portion 45e Fitting cylinder portion 45f Sealing cylinder portion 45g Annular disk portion 45h Outer cylinder portion 46 Double pressurized container 50 Double pressurized product 52 Discharge member

Claims (5)

It is composed of an outer container, an inner container housed in the outer container, and a lid closing the mouths of the outer container and the inner container, and a gap is formed between the mouth of the outer container and the mouth of the inner container. A method for producing a double-pressurized product in which a pressurizing agent and a stock solution are filled in a double container provided ,
preparing an outer container and an inner container filled with a stock solution, which is housed in the outer container and compressed by an external force generated by compressing the outer container , thereby contracting;
Closely attach the lid to the mouth of the inner container,
release the external force that causes the inner container to contract,
Filling a pressurizing agent between the outer container and the inner container through a gap between the mouth of the outer container and the mouth of the inner container,
sealing a gap between the mouth of the outer container and the mouth of the inner container with the lid;
A method of manufacturing a double-pressed product. 2. The method of claim 1 , wherein the step of compressing is performed prior to filling the inner container with the stock solution. 2. The method of claim 1 , wherein said compressing step is performed after filling the inner container with the stock solution. A double pressurized product according to any one of claims 1 to 3 , wherein the outer container is decompressed and elastically returned to its original state prior to filling the pressurizing agent between the outer container and the inner container. manufacturing method. 5. The method for producing a pressurized product according to any one of claims 1 to 4 , wherein 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.

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