JP2017159938A - Fluid storage container, and method for manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fluid storage container capable of being simply manufactured at a low cost, surely preventing deterioration of fluid stored in a storage chamber inner part, and holding a stable weak seal, and a method for manufacturing the same.SOLUTION: A fluid storage container 1 includes a fluid storage part 2 having a storage chamber 2a where fluid 100 to be subjected to high retort treatment is stored, and a spout portion 3 provided in one end 1a of the fluid storage part 2. The fluid storage part 2 has in the part, an easy-to-peel sealing part 4 sealing so as to divide the fluid storage part 2 into one end 1a side where the spout portion 3 is provided, and the other end 1b side where the fluid 100 is stored. The easy-to-peel sealing part 4 is fused so as to have a prescribed embossment shape by heat-seal processing, and is set in hardness which allows the stored fluid 100 to flow from the other end 1b side into the one end 1a side when prescribed force or more to peel the fused place acts so as to peel the fused place.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a liquid container for containing a liquid enteral nutrient, various liquid foods, or a fluid obtained by solidifying, gelling, or solling them, and a method for producing the same.

  Liquid enteral nutrients for medical use or various liquid foods, or fluids obtained by solidifying, gelling, or solling them are stored and transported in flexible and liquid-tight fluid containers. Often. Here, when the fluid is exposed to the air, it oxidizes and the components are altered, and the efficacy as a drug may be reduced or deteriorated, the taste may be changed, or it may be spoiled. Therefore, conventionally, a fluid container having a fluid container formed of a liquid-tight material and an oxygen-impermeable material is known (see, for example, Patent Document 1).

JP 2003-135563 A

  However, in the above-mentioned Patent Document 1, since the pouring part is made of resin and has oxygen permeability, the fluid accommodated inside the fluid accommodating part is gradually oxidized by oxygen that has entered from the pouring part. There was a fear. Therefore, it has been proposed to form a sealing portion that seals the fluid accommodation portion by dividing it into one end side having a dispensing portion and the other end side containing the fluid.

  However, when the sealing portion is formed, it is necessary to allow the fluid to flow into the extraction portion side when using the sealing portion. Special technology was required and was a problem.

  It has also been proposed that the sealing portion be an easily peelable sealing portion that is weakly sealed so that it can be peeled off when a predetermined force or more is applied. This has obtained a predetermined effect in a container enclosing a conventional retort-treated fluid.

  However, in recent years, a retort processing technique (so-called high retort treatment) performed at a high temperature (about 125 ° C. or higher) and in a short time has come to be used. In this high retort process, since the sterilization process is performed at a higher temperature than in the past, if an easy-peel seal part is formed on a resin that is formed by sandwiching an oxygen-impermeable material such as an aluminum layer, the strength of the weak seal There was a problem that became unstable. In addition, in order to provide resistance to high retort processing, it is common to have polypropylene resin on the innermost surface layer of the fluid container. There has been a problem of destabilizing the strength of the weak seal of the part.

  The present invention has been made in view of the above problems, and can be easily manufactured at low cost, can surely prevent the deterioration of the fluid contained in the accommodation chamber, and can maintain a stable weak seal. It is an object of the present invention to provide a fluid container and a manufacturing method thereof.

  In order to solve this problem, the invention described in claim 1 includes a flexible fluid container having a container chamber in which a fluid to be subjected to high retort processing for medical use or food and drink is contained, and the fluid A fluid container comprising a cylindrical portion that allows a body to pass therethrough and a resin-made pouring portion provided at one end of the fluid housing portion for pouring out the fluid. The housing part has at least a liquid-tight function, a light transmission preventing function for preventing light transmission and an oxidation preventing function for preventing oxygen transmission, and the film-like member contains the housing chamber inside. Easy to seal so as to divide the fluid containing part into the one end side where the pouring part is provided and the other end side where the fluid is contained. It has a peeling sealing part, and the easy peeling sealing part The fluid is fused so as to have a predetermined embossed shape, and when the force more than a predetermined level is applied to peel off the fused part, the fluid is separated and stored. It is characterized by setting it as the fluid storage container set to the intensity | strength which flows in into one end side from.

  According to a second aspect of the present invention, in addition to the configuration of the first aspect, the easily peelable sealing portion is fused by a predetermined embossed die between the one end side and the other end side. A fluid container having a plurality of adhesion sites arranged side by side is characterized.

  In addition to the structure of Claim 1 or 2, invention of Claim 3 is the strength comprised so that it might not peel unless the said fluid accommodating part applies stronger force than the said easily peelable sealing part. The fluid container is sealed so as to be divided into the one end side and the other end side by a sealing portion and the easy-peel sealing portion continuous to the strong sealing portion. .

  The invention according to claim 4 includes a flexible fluid housing portion having a housing chamber in which a fluid to be subjected to high retort processing for medical use or eating and drinking, and a cylindrical portion through which the fluid passes. A fluid container containing a resin pouring part provided at one end of the fluid container for pouring out the fluid, and at least a liquid-tight function; A first step of opposing the first sheet having a light transmission preventing function for preventing light transmission and an oxidation preventing function for preventing oxygen transmission, and the first step opposed in the first step The pouring part is disposed on one end side of one sheet, and the peripheral part other than the other end side of the first sheets facing each other and the pouring part are bonded to form the fluid containing part. And a part of the fluid container formed in the second step. A heat plate for heat seal processing that has been embossed at a predetermined embossed position on one side where the body housing portion is divided into the one end side where the pouring portion is provided and the other end side where the fluid is housed. A third step of disposing an elastic sheet having heat resistance on the other side, adhering both to form an easy-peel sealing portion having an embossed shape, and the other end of the fluid container A fluid container containing method comprising: a fourth step of injecting the fluid from the side; and a fifth step of adhering the other end side of the fluid container in a state where the fluid is injected. It is characterized by that.

  According to a fifth aspect of the present invention, in addition to the configuration according to the fourth aspect, in the third step, the fluid housing part is placed on the one end side and the other end side in a part of the fluid housing part. A heat plate for heat seal processing that is not predetermined embossed is disposed on the one side of the position to be divided into two, and a heat plate for heat seal processing that is predetermined embossed so as to be continuous with the heat plate And placing the elastic sheet having heat resistance on the other side to seal the fluid containing part into the one end side and the other end side, and from the easy peel sealing part A method for manufacturing a fluid container that forms a strong sealing portion configured so as not to be peeled off unless a strong force is applied, and forms the easily peelable sealing portion continuous with the strong sealing portion. It is characterized by.

  According to the first aspect of the present invention, the easily peelable sealing portion that seals the fluid housing portion at one end side and the other end side and can be peeled off by a predetermined force or more has a predetermined embossed shape. Because it is formed by heat sealing, it can be easily manufactured at low cost even when high retort processing is performed, it is possible to reliably prevent deterioration of the fluid contained in the storage chamber, and a stable weak seal is maintained. can do.

  According to the second aspect of the present invention, the easy-peel sealing portion is bonded so as to have a plurality of rows of bonding portions fused by an embossed mold between one end side and the other end side. Therefore, a stable weak seal can be held more reliably.

  According to invention of Claim 3, it has a strong sealing part which does not penetrate even if it applies force more than predetermined while sealing a fluid accommodation part to one end side and the other end side, and part Since the easy-peel seal part is formed, it is difficult to open at the time of transportation or the like, and if a force is applied during use, the container can be easily opened.

  According to invention of Claim 4, the fluid container which concerns on this invention can be reliably manufactured at low cost by a simple process.

  According to invention of Claim 5, the fluid container which has a strong sealing part and an easy peeling sealing part can be reliably manufactured at low cost by a simple process.

It is a figure which shows the whole structure in the fluid container of embodiment of this invention. It is the material which forms the fluid accommodating part of the fluid accommodating container of the embodiment, Comprising: It is the elements on larger scale of the 1st sheet | seat which forms a fluid accommodating part. It is a figure which shows the example of the embossing shape in the fluid storage container of the embodiment. It is a figure which shows the 1st process in the manufacturing process of the fluid container of the embodiment. It is a figure which shows the 2nd process in the manufacturing process of the fluid container of the embodiment. It is a figure which shows the 3rd process in the manufacturing process of the fluid container of the embodiment. It is a figure which shows the 4th, 5th process in the manufacturing process of the fluid storage container of the embodiment. It is a figure which shows the 1st another example of the easy peeling sealing part in the fluid container of the embodiment. It is a figure which shows the 2nd another example of the easy peel sealing part in the fluid container of the same embodiment. It is a figure which shows the 3rd another example of the easy peeling sealing part in the fluid container of the embodiment. It is a figure which shows the 4th another example of the easy peel sealing part in the fluid container of the same embodiment. It is a figure which shows the 5th another example which has the strong sealing part and the easy peeling sealing part in the fluid container of the embodiment. It is a figure which shows the 6th another example which has the strong sealing part and easy peeling sealing part in the fluid container of the embodiment. It is a figure which shows the 7th another example which has a strong sealing part and an easy peeling sealing part in the fluid container of the embodiment. It is a figure which shows the 1st another example of the emboss shape in the fluid container of the embodiment. It is a figure which shows the 2nd another example of the emboss shape in the fluid container in the same embodiment. It is a figure which shows the 1st another example of arrangement | positioning of the emboss shape in the fluid container of the embodiment. It is a figure which shows what corresponds to the 5th example of a 3rd process in the manufacturing process of the fluid container of the same embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  1 to 7 show an embodiment of the present invention.

  The fluid container 1 of this embodiment is a container for storing a fluid 100 for medical use or eating and drinking, which performs high-retort treatment for a short time at a high temperature (about 125 ° C. or more). Specifically, the fluid 100 for medical use or food and drink may be a liquid enteral nutrient, various liquid foods, or those obtained by solidifying, gelling, or solling them. However, the fluid 100 may be anything other than that.

  As shown in FIG. 1, the fluid container 1 includes a fluid container 2 formed in a substantially rectangular bag shape when viewed from the front, and a dispensing unit 3. The fluid container 2 is sealed with the fluid container 2 on the one end 1a side having the pouring part 3 and the other end 1b side on which the fluid 100 is injected and sealed, and at least a predetermined force. It has the easy peeling sealing part 4 which can be peeled off. In addition, an accommodation chamber 2 a in which the fluid 100 is accommodated is formed inside the other end 1 b surrounded by the fluid accommodation portion 2 and the easy peeling sealing portion 4.

  Further, as shown in FIG. 2, the fluid container 2 is formed by first sheets 5 and 5 as a pair of “film-like members”. The first sheet 5 is formed of a flexible film-like member having a substantially rectangular shape when viewed from the front. As shown in FIG. 2, the first sheet 5 is composed of a fusible resin film 6 as an “adhesive layer” and a “liquid-tight layer”, a rigid reinforcing film 7, and a light and antioxidant film as an “antioxidant layer”. 8. A liquid-tight film 9 as a “liquid-tight layer” is laminated. The opposing films 6, 7, 8, and 9 are bonded with an adhesive (not shown).

  The fusible resin film 6 is made of a resin such as polypropylene (PP). The fusible resin film 6 is heat-sealed to the fluid container 2 itself and the easy-to-peel sealing part 4 by heating and pressurizing by heat seal (heat press) described later in the state of the fluid container 2. Is done. Any processing other than heat-pressing processing by heat press may be used as long as it can realize the above-mentioned heat fusion. Moreover, the fusible resin film 6 has liquid tightness with respect to the fluid 100 accommodated in the accommodation chamber 2a. Moreover, the fusible resin film 6 has retort resistance in high retort processing (the quality can be maintained even when exposed to high temperatures).

  The rigidity reinforcing film 7 is formed of a material having high rigidity such as nylon. By laminating the rigid reinforcing film 7, it is possible to increase the resistance to the force applied to the fluid accommodation unit 2 from the outside and the tensile strength.

  The light and antioxidant film 8 is made of an oxygen-impermeable material such as aluminum. The material of the light and the antioxidant film 8 may be a metal or a material other than a metal (for example, a resin) as long as it has oxygen impermeability.

  The liquid-tight film 9 is formed of a material having liquid-tightness with respect to the fluid 100 and water stored in the storage chamber 2a, such as polyethylene terephthalate (PET).

  The first sheets 5 and 5 are arranged so that the fusible resin films 6 face each other, and the side peripheral edge portions 18 and 18, the one end peripheral edge portion 12, and the other end peripheral edge portion 19 are heat-sealed. Thus, the fluid housing part 2 is formed. Moreover, the easy peeling sealing part 4 is formed by heat sealing | fusion so that it may straddle side part peripheral parts 18 and 18 mutually.

  As shown in FIGS. 1 and 3, the easy-peel sealing portion 4 is formed by heat-sealing the first sheets 5 so as to have an adhesion portion 4 a bonded in a predetermined emboss shape. The weak adhesion part 4b is provided between the adhesion parts 4a. Here, the easy-peel sealing part 4 is formed so as to straddle the side edge parts 18, 18 at a position close to the extraction part 3 and in a direction substantially orthogonal to the extraction direction. In addition, here, as the bonding portion 4a bonded in an embossed shape, a plurality of round-shaped irregularities as shown in FIG. 3 are formed (three rows in FIG. 3), and the weakened portion between the bonding portions 4a. Adhesive sites 4b are provided, and a plurality of rows of concavities and convexities are formed between the one end 1a side having the pouring portion 3 and the other end 1b side enclosing the fluid 100. In addition, each unevenness is formed so as to be shifted for each column, and adjacent columns are arranged in a staggered manner.

  The extraction part 3 is formed of a resin such as polypropylene. The extraction portion 3 includes a substantially cylindrical tubular portion 13 provided on the distal end side and a fixing portion 14 provided on the proximal end portion. The cylindrical portion 13 is provided with an uneven portion around it. The fixing part 14 is formed in a substantially rhombic cross section, and a cylindrical through hole 15 is formed on the extension of the internal cylindrical part 13.

  With such a configuration, in a state where the container main body 1 storing the fluid 100 in the storage chamber 2a is stored, the extraction portion 3 and the storage chamber 2a are separated from each other by the easy peeling sealing portion 4. .

  Next, the manufacturing process of the fluid container 1 of the present embodiment will be described.

<First step>
First, as shown in FIG. 4, the pair of first sheets 5 and 5 are arranged so that the respective fusible resin films 6 face each other.

<Second step>
Next, the dispensing portion 3 obtained in the second step is disposed on the one end 1a side of the pair of first sheets 5 and 5 opposed in the first step, and the first sheet 5 facing the first sheet 5 is opposed. , 5 and the first sheet 5 and the extraction portion 3 are in contact with each other. In this state, as shown in FIG. 5, the side peripheral edge portions 18, 18 on both sides of the opposing first sheets 5, 5, the easy-peel sealing portion 4, and one peripheral edge portion of the first sheet 5. 12 are heated and pressurized by heat sealing or the like. Thereby, the meltable resin film 6 is solidified after being melted, and the heated / pressurized portion is thermally fused. Thereby, although the outline of the storage chamber 2a is formed, the other end peripheral part 19 of the 1st sheet | seats 5 and 5 is not heat-seal | fused at this stage. Reference numeral 17 denotes a cap of the dispensing unit 3.

<Third step>
Next, as shown in FIG. 6, the easy-peel sealing part 4 is formed in a substantially central part in the longitudinal direction at a predetermined position. Here, the easy-peel sealing part 4 of the fluid accommodation part 2 is arranged on an elastic member 21 such as rubber or urethane resin on the lower side, and a hot plate 22 formed in an embossed shape is further formed thereon. The easy peeling sealing part 4 is formed by pressing. The upper embossed hot plate 22 is pressed against the elastic member 21 made of rubber or the like below through the fluid accommodating portion 2 to form an adhesive portion 4a in the embossed shape, and a weakly bonded portion therebetween 4b is formed. In addition, since the hot plate 22 at this time has a plurality of embossed shapes and the rows are formed in a staggered manner, it can be sealed without a gap, and the portion between the embossed circles is relatively bonded. It becomes sweet and can form a weak seal.

<Fourth process>
Next, the fluid 100 is injected from the other end peripheral portion 19 on the other end 1b side of the pair of first sheets 5 and 5 that are not thermally fused in the second step.

<Fifth process>
Next, after injecting the fluid 100, the other peripheral edge 19 is sealed by heat sealing as shown in FIG.

  The fluid container 1 is completed by the first to fifth steps as described above.

  In the fluid accommodating part 2 of the fluid accommodating container 1, the inside of the accommodating chamber 2a and the extraction part 2 are separated from each other by the easy peeling sealing part 4 during storage and transportation. Therefore, even if the extraction part 2 is formed of an oxygen-permeable material, the easy-peel sealing part 4 can block the penetration of oxygen that has passed through the extraction part 2 into the storage chamber 2a. In addition, if it is bent and stored and transported in the vicinity of the easy-peel seal part 4, even if a predetermined pressure is applied to the fluid container 2 of the fluid container 1, the pressure is transmitted from the position first by bending. Therefore, it is possible to prevent the easy peeling sealing portion 4 from being opened.

  Next, the procedure for using the fluid container 1 of this embodiment will be described.

  The user of the fluid 100 inside the fluid container 1 extends the folded fluid container 1 and attaches the dispensing part 3 to a predetermined instrument. Thereafter, by applying a force of a predetermined level or more to the fluid housing part 2, the first sheets 5 and 5 of the easy peel seal part 4 are peeled off to open, and the fluid flows from the other end 1b side to the one end 1a side. The body 100 can be allowed to flow in, and the fluid 100 can be extracted from the extraction unit 3 for use.

  That is, the time during which the fluid 100 accommodated in the accommodation chamber 2a is in contact with oxygen is only a very short time from when the easy-peel sealing part 4 is broken to when the fluid 100 is supplied into the human body with a gastrostomy tube or the like. Limited to. For this reason, the alteration of the fluid 100 due to oxidation is reliably prevented.

  In addition, about the shape of the easy peeling sealing part 4 in the fluid container 1 of above-described embodiment, it is not restricted to an above-described thing, What is necessary is just to be formed in an appropriate shape. For example, as shown in FIG. 8, the easy peeling sealing part 4A of the shape which surrounds the circumference | surroundings of the extraction | pouring part 3 in V shape may be sufficient. Moreover, the easy peeling sealing part 4B of a shape which surrounds the circumference | surroundings of the extraction | pouring part 3 in a W shape as shown in FIG. 9 may be sufficient. Moreover, the easy peeling sealing part 4C of the shape which surrounds the circumference | surroundings of the extraction | pouring part 3 in reverse M shape in the range wider than W as shown in FIG. 10 may be sufficient. Moreover, the easy peeling sealing part 4D of a shape which surrounds the circumference | surroundings of the extraction | pouring part 3 in U shape (U shape) as shown in FIG. 11 may be sufficient.

  Moreover, about the shape of the easy peeling sealing part 4 in the fluid container 1 of above-described embodiment, all the formed seal parts became the easy peeling sealing part 4, It is not limited, and may be provided in combination with a strong seal (strong seal) portion that does not easily break. For example, as shown in FIG. 12, the portion close to the peripheral portion may be the strong seal portion 11E, and the middle portion close to the dispensing portion 3 may be the easy peel seal portion 4E. At this time, since only the vicinity of the pouring portion is broken, it can be opened in a state where it is easy to pour out. At this time, as shown in FIG. 18, in the third step, the upper middle mold 22 is embossed, and the edge mold 23 is not embossed. Is pressed against the lower elastic member 21 to simultaneously form an embossed shape and a non-embossed shape.

  Further, as shown in FIG. 13, the portion close to the peripheral portion is the strong seal portion 11F, and the middle portion close to the dispensing portion 3 is the easy-peel sealing portion 4F formed in a V shape. May be. Further, as shown in FIG. 14, an easily peelable sealing portion 4 </ b> G in which a portion near the peripheral portion is slanted by the strong seal portion 11 </ b> G and a middle portion near the extraction portion 3 is formed in a V shape. It may be.

  As described above, according to the fluid container 1 of the above-described embodiment, the fluid container 2 is sealed to the one end 1a side and the other end 1b side and can be easily peeled off by a predetermined force or more. Since the peel-off sealing part 4 is formed by heat sealing processing having a predetermined embossed shape, even when performing high retort processing, the fluid 100 can be easily manufactured at low cost and is accommodated inside the accommodation chamber 2a. Can be reliably prevented, and a stable weak seal can be maintained. Moreover, this fluid container 1 can be reliably manufactured at low cost by a simple process.

  Moreover, according to the fluid container 1 of the above-described embodiment, the easy-peel sealing part 4 is bonded so as to have a plurality of rows of embossed shapes between the one end 1a side and the other end 1b side. Therefore, a stable weak seal can be held more reliably.

  Further, according to the fluid container 1 of the fifth to seventh modifications of the above-described embodiment, the fluid container 2 is sealed on the one end 1a side and the other end 1b side, and a predetermined impact or more is applied. However, it has strong sealing portions 11E, 11F, and 11G that do not penetrate, and the easy-peel sealing portions 4E, 4F, and 4G are formed in a part thereof, so that it is difficult to open during transportation, If an impact is applied during use, the container can be easily opened. Moreover, the fluid container 1 having the strong sealing portions 11E, 11F, and 11G and the easy peeling sealing portions 4E, 4F, and 4G can be reliably manufactured at a low cost by a simple process.

  The embodiment described above is described in order to facilitate understanding of the present invention, and is not described in order to limit the present invention.

  For example, in the present embodiment, the film configuration and the like of the fluid container may be changed as appropriate.

  Moreover, you may change suitably also about the shape of a fluid accommodating part, the shape of an easy peeling sealing part, and the embossing shape of an easy peeling sealing part. For example, as the embossed shape, patterns formed in various shapes as shown in FIGS. Moreover, as shown to Fig.16 (a)-(c), each embossing shape may be what kind of size, and the thing of a different magnitude | size may be combined. Further, as shown in FIGS. 17A to 17C, there is no limitation on the way in which the emboss is arranged. Further, as shown in FIG. 17B, embosses having different shapes and sizes may be arranged.

DESCRIPTION OF SYMBOLS 1 Fluid container 1a One end 1b Other end 2 Fluid accommodating part 2a Accommodating chamber 3 Extraction part 4 Easy peeling sealing part 5 1st sheet | seat (film-like member)
6 Fusible resin film (adhesive layer, liquid-tight layer)
7 Stiffening film (stiffening layer)
8 Light and antioxidant film (light and antioxidant layer)
9 Liquid-tight film (liquid-tight layer)
100 fluid

Claims (5)

In order to pour out the fluid, comprising a flexible fluid housing portion having a housing chamber in which a fluid to be subjected to high retort treatment for medical use or eating and drinking is provided, and a cylindrical portion through which the fluid passes. A fluid container including a resin pouring part provided at one end of the fluid container,
The fluid container has at least a liquid-tight function, a light transmission preventing function for preventing light transmission and an oxidation preventing function for preventing oxygen transmission, and the film-like member contains the above-mentioned inside. Formed to have a containment chamber,
An easy-peel sealing part that seals the fluid accommodating part so as to divide the fluid accommodating part into the one end side where the pouring part is provided and the other end side where the fluid is accommodated is provided in a part thereof And
The easy peel sealing part is fused so as to have a predetermined embossed shape by heat sealing processing,
The strength is set such that when the force of a predetermined level or more is applied to peel off the fused part, the part is peeled off and the stored fluid flows into the one end side from the other end side. A fluid container.   The said easily peelable sealing part, The adhesion site | part melted | fused by the mold | die of a predetermined | prescribed emboss shape between the said one end side and the said other end side is located in multiple places. Fluid container.   The fluid accommodating portion is composed of a strong sealing portion configured so as not to be peeled off unless a force stronger than the easy peeling sealing portion is applied, and the easy peeling sealing portion continuous to the strong sealing portion. The fluid container according to claim 1, wherein the container is sealed so as to be divided into the one end side and the other end side. In order to pour out the fluid, comprising a flexible fluid housing portion having a housing chamber in which a fluid to be subjected to high retort treatment for medical use or eating and drinking is provided, and a cylindrical portion through which the fluid passes. A fluid container containing a resin pouring part provided at one end of the fluid container,
At least a first step of opposing the first sheet having a liquid-tight function, a light transmission preventing function for preventing light transmission and an oxidation preventing function for preventing oxygen transmission;
The pouring part is disposed on one end part side of the first sheet opposed in the first step, and the peripheral part and the pouring part other than the other end side of the opposed first sheets. Is bonded to form the fluid housing part, and
In part of the fluid housing part formed in the second step, the fluid housing part is placed on the one end side where the pouring part is provided and the other end side on which the fluid is housed. A heat-sealing plate for heat-seal processing that has been embossed in a predetermined position is placed on one side, and an elastic sheet that has heat resistance is placed on the other side. A third step of forming a sealing portion;
A fourth step of injecting the fluid from the other end of the fluid container;
A fifth step of adhering the other end side of the fluid container in a state where the fluid is injected;
A method for producing a fluid container, characterized by comprising:   In the third step, a heat seal that is not embossed in a predetermined manner on the one side of the fluid housing portion that is divided into the one end side and the other end side of the fluid housing portion. By arranging a hot plate for processing, placing a hot plate for heat seal processing embossed in a predetermined manner so as to be continuous with the hot plate, and placing an elastic sheet having heat resistance on the other side The fluid housing portion is sealed so as to be divided into the one end side and the other end side, and a strong sealing portion configured so as not to be peeled off unless a force stronger than the easily peelable sealing portion is applied. The method for producing a fluid container according to claim 4, wherein the easy-peel sealing portion continuous with the strong sealing portion is formed.

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