JP2013144561A - Liquid storing container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent flexible films of a flexible bag body from being damaged even though large flow occurs in an inside liquid.SOLUTION: Fixing tools 240 is brought into contact with each of flexible films 220a, 220b constituting a flexible bag body 221, concave parts 240a of the fixing tools 240 are made face or contact straddling an outer peripheral fringe part where the outer peripheral face of the guide out member 230 is heat sealed and a part inside of the same where the guide out member 230 is not heat sealed. Consequently, displacement of the part where the guide out member 230 is not heat sealed continuing to the outer peripheral part where the guide out member 230 of the flexible films 220a, 220b is heat sealed to the above outer peripheral part is regulated by the fixing tool 240 when liquid filling the inside flows by impact from the outside acting on the flexible bag body 221. It is possible to prevent the flexible films 220a, 220b from being damaged and the flexible bag body 221 from being broken.

Description

  The present invention relates to a liquid storage container having a flexible bag body in which liquid is stored and a liquid outlet.

  For example, liquid storage containers that are frequently used in detergent refill packs, liquid supply packs, and the like mainly have a flexible bag body in which liquid is stored and a liquid outlet. . The flexible bag is configured in a bag shape that can be deformed by thermally welding the outer peripheral edges of a pair of thermoplastic films, and some of them have a bag shape with a hook. On the other hand, the lead-out port is provided through a cylindrical lead-out member made of a resin molded product, and this lead-out member is disposed between the outer peripheries of the respective flexible films and is thermally welded to the outer peripheries of the respective films.

  Other uses of the liquid storage container described above include, for example, an ink cartridge of an ink jet printer. As the ink cartridge, a cartridge that is easy to attach to and detach from the ink jet recording apparatus and that is lightweight and inexpensive is preferred. In the past, the present applicant also proposed an ink cartridge that meets the requirements by using the above-described liquid storage container as an inner bag, accommodated in an outer box such as cardboard, and the outlet opening exposed to the outside of the outer box. (For example, Patent Document 1).

JP 2010-82994 A

  In the liquid container having the above-described configuration, for example, when an external force (vibration, impact, etc.) is applied to the flexible bag body by dropping or the like, the liquid flows inside and the flexible bag body is deformed. It is important to take some care so that the flexible bag is not damaged.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to prevent damage to the flexible film of the flexible bag even if a large flow occurs in the liquid inside. The object is to provide a liquid container.

  That is, depending on how the liquid flows when an external force (vibration, impact, etc.) is applied to the flexible bag of the liquid storage container, the liquid is fixed by heat welding between the flexible bag and the outlet member. It is assumed that this part is greatly deformed by concentrating on. For this reason, it is important to take care so that the flexible film of the flexible bag body is not damaged by a load applied in a concentrated manner on the fixing portion with the lead-out member.

Therefore, in order to achieve the above object, the present invention
A cylindrical lead-out member made of a resin molded product having a lead-out port and an outer peripheral edge between which the lead-out members of a pair of flexible films are fixed, and the inside and the outside communicate with each other through the lead-out port. In a liquid container having a flexible bag body,
A pair of deformation restricting members abutting on the respective films from the surface side;
Each deformation regulating member is formed on a surface facing the film, and is opposed to an outer peripheral edge portion of each film on which the lead-out member is heat-welded and a portion on which the lead-out member is not fixed. And a recess to be
The recess is formed in the same shape corresponding to the outer shape of the lead-out member over the entire length of the deformation regulating member in the penetration direction of the lead-out port, and faces the portion of the film where the lead-out member is not fixed. And restricting displacement in the radial direction of the outlet with respect to the outer peripheral edge portion to which the outlet member of the portion is fixed.
It is characterized by that.

  According to the said invention, the recessed part of the deformation | transformation control member contact | abutted to each flexible film of a flexible bag body from the surface side is formed in the shape corresponding to the external shape of a derivation | leading-out member. For this reason, when a recessed part faces across the outer periphery part to which the derivation member of each film was fixed, and the part to which the inner derivation member is not fixed, the derivation member to the outer periphery part to which the derivation member of the film was fixed Displacement in the radial direction of the outlet port of the portion where is not fixed is regulated by the deformation regulating member.

  Of the film, the outer peripheral edge portion formed of a resin molded product and thermally bonded to the outlet member having a certain rigidity has the same rigidity as that of the outlet member that is the object thermally bonded. On the other hand, the rigidity of the part inside the outer peripheral edge of the film (the part in which the liquid is accommodated) that is connected to this part and is not thermally welded is only the rigidity that the film itself originally has. Therefore, of course, the rigidity is significantly lower than the rigidity of the portion where the lead member of the film is heat-welded.

  Therefore, when a large displacement occurs between the portion of the film where the lead-out member is heat-welded and the portion where the lead-out member inside is not heat-welded, it is close to the boundary between the portion where the lead-out member is not heat-welded. , Tensile stress is applied to the film where the lead-out member is not thermally welded. Thereby, a bag breakage is easily brought about in the film of the part where the tensile stress is concentrated and the lead-out member is not thermally welded.

  However, the relative displacement of the portion of the film where the lead-out member is heat-welded to the portion where the inner lead-out member is not heat-welded is regulated by the deformation restricting member that faces the recess across both portions. The tensile stress is prevented from being concentrated on the film of the portion where the lead-out member is not thermally welded, which is close to the boundary with the portion where the lead-out member is not thermally welded.

  Therefore, even if a large flow occurs in the liquid inside the flexible bag body, the flexible film of the flexible bag body should not be damaged by a load applied concentrated on the fixing portion with the lead-out member. Can do.

  In the above invention, the concave portion opposes a portion of the film facing the portion where the lead-out member is not fixed to an outer peripheral edge portion where the lead-out member of the film is thermally welded in the penetration direction. It is desirable to have at least the size of the part.

  According to the present invention, even if a large flow occurs in the liquid inside, it is possible to prevent the flexible film of the flexible bag body from being damaged by a load applied in a concentrated manner on the fixing portion with the lead-out member. .

1 shows a printing apparatus using a liquid storage container according to an embodiment of the present invention as an ink cartridge, wherein (a) is a plan view, (b) is a front view, and (c) is a right side view. It is a perspective view which shows the flexible bag body of the liquid storage container which concerns on one Embodiment of this invention used for the ink cartridge of FIG. It is a top view of the flexible bag body of FIG. It is explanatory drawing which expands and shows the principal part of FIG. The shape of the fixture of FIG. 4 is shown in a front view, (a) is an explanatory view showing the state before contact with the surface of the flexible bag, and (b) is the contact with the surface of the flexible bag. It is explanatory drawing which shows the state after contact. FIG. 5 is a cross-sectional view showing a state in which the fixture of FIG. 4 suppresses deformation of the liquid storage container, (a) is an explanatory view showing the liquid storage container before the deformation, and (b) is an explanatory view showing the deformation. FIG. 5 is a cross-sectional view illustrating a state in which the liquid storage container is deformed when the fixing device of FIG. It is explanatory drawing of the apparatus which tests durability of the deformation | transformation by the impact of the liquid storage container of FIG. It is explanatory drawing which shows the experimental result using the apparatus of FIG. It is explanatory drawing which shows the experimental result using the apparatus of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, a printing apparatus using a liquid container according to an embodiment of the present invention as an ink cartridge will be described with reference to FIG.

(Overall configuration of printing device)
1A and 1B show a printing apparatus using a liquid container according to an embodiment of the present invention as an ink cartridge. FIG. 1A is a plan view, FIG. 1B is a front view, and FIG. 1C is a right side view. The printing apparatus 100 according to the present embodiment illustrated in FIG. 1 is an inkjet line color printer. The printing apparatus 100 includes a plurality of ink heads having a large number of nozzles, and discharges black or color ink from each of the ink heads to perform printing in units of lines. It forms so that it may mutually overlap.

  In the present embodiment, the ink head includes four ink heads arranged side by side along the paper conveyance direction, and forms a color image by overlapping a plurality of images. The printing apparatus 100 includes an arithmetic processing unit 330. The arithmetic processing unit 330 also performs control related to ink supply from the ink cartridge in addition to the above-described print processing by the ink head, drive control of the transport mechanism, and the like. Do.

  The arithmetic processing unit 330 is configured by a processor such as a CPU or DSP (Digital Signal Processor), memory, hardware such as other electronic circuits, software such as a program having the function, or a combination thereof. This is an arithmetic module. The arithmetic processing device 330 virtually constructs various functional modules by appropriately reading and executing the program, and various functional modules for processing related to image data, operation control of each unit, and user operation are performed by the constructed functional modules. Process. In addition, an operation panel 340 is connected to the arithmetic processing unit 330, and an instruction and a setting operation by a user can be received through the operation panel 340.

  The printing apparatus 100 is provided with a cartridge mounting mechanism 30 for mounting the ink cartridge 200 on the upper surface of the apparatus main body 1, and a plurality (here, four) of ink cartridges 200 of the respective colors are arranged with respect to the cartridge mounting mechanism 30. And loaded. The cartridge mounting mechanism 30 is provided with a holder portion, which is an attachment / detachment mechanism for the ink cartridge 200, oriented in the horizontal direction (attachment / detachment operation direction D2). An upper surface device 350 is disposed so as to cover the upper side of the cartridge mounting mechanism 30, and the ink cartridge 200 is loaded in a horizontal direction between the lower surface of the upper surface device 350 and the upper surface of the printing apparatus main body 1. This is done by inserting. In the upper surface device 350, for example, a sheet feeder, an operation panel, and the like are disposed.

  The ink cartridge 200 has a flat rectangular parallelepiped outer box 210 that can be attached to and detached from the printing apparatus 100 in the horizontal direction, and a liquid storage container according to an embodiment of the present invention stores ink therein. It is housed as a bag.

(Overall configuration of liquid storage container)
2 is a perspective view showing a flexible bag body of a liquid container according to an embodiment of the present invention used in the ink cartridge 200 of FIG. 1, and FIG. 3 is a plan view of the same. As shown in FIG. 2, the liquid storage container 220 of the present embodiment includes a rectangular flexible bag body 221 and a lead-out member 230 attached to one side of the flexible bag body 221.

  The flexible bag 221 is a bag formed by fixing the outer peripheral edges of a pair of flexible films 220a and 220b by heat welding. In the flexible bag 221 of the example shown in FIG. Outer peripheral edges of the flexible films 220a and 220b via the flexible films 220c and 220d on the two long sides of the flexible bag 221 extending along the direction D2 of attaching and detaching the cartridge 200 to the printing apparatus 100 The two are heat welded. With these flexible films 220c and 220d, the flexible bag body 221 of this example has a configuration in which a gusset (town) that increases the amount of liquid stored in the flexible bag body 221 is provided.

  In addition, the flexible films 220c and 220d are omitted, and the outer peripheral edges of the flexible films 220a and 220b are directly heat-welded between the two long sides of the flexible bag 221 to have a gusset (town). A flexible bag body 221 may be configured.

  The lead-out member 230 is provided on one short side of the two short sides of the flexible bag body 221 orthogonal to the attaching / detaching operation direction D2. The lead-out member 230 is a cylindrical resin molded product having a lead-out port 231 that communicates the inside and the outside of the flexible bag body 221, and the lead-out port 231 regardless of the expansion and contraction of the flexible bag body 221. Has sufficient rigidity. The outer peripheral surface on the base end side of the lead-out member 230 is sandwiched between the outer peripheral edges of the flexible films 220a and 220b over the width Wa in the penetration direction X of the lead-out port 231, and is thermally welded without any gap. The leading end side of the lead-out member 230 protrudes outward from the flexible bag body 221.

  As shown in FIG. 4, the liquid storage container 220 according to the present embodiment includes a pair of fixtures 240 and 240 (corresponding to deformation regulating members in claims) that abut against the flexible films 220 a and 220 b, respectively. In addition. Each fixture 240 has a rectangular parallelepiped shape having the same length as the short side of the flexible bag body 221, and the width Wb of each fixture 240 is the heat of the lead-out member 230 to the flexible films 220a and 220b. It has a dimension that is at least twice the welding width Wa.

  As will be described later, each fixing tool 240 is for preventing deformation when an external force is applied to the flexible bag 221 due to dropping or the like. Therefore, each fixing tool 240 should just have the rigidity which can prevent a deformation | transformation of the contact part of the fixing tool 240, when external force is added to the flexible bag body 221. FIG.

  Further, as shown in the explanatory diagram of FIG. 5A, the width direction of the fixture 240 (= the penetration direction X of the outlet port 231) is provided on the surface of each fixture 240 facing the flexible films 220a and 220b. A recess 240a is formed over the entire length. The concave portion 240a has a cross-sectional shape (a shape corresponding to the outer shape of the base portion) obtained by halving the outer shape of the base portion of the lead-out member 230 that is heat-sealed between the outer peripheral edges of the flexible films 220a and 220b. .

  As shown in FIG. 4, each fixing tool 240 has positions of one end in the width direction and both ends in the longitudinal direction at the positions of one short side and both long sides of the flexible bag body 221 provided with the lead-out member 230. Align and abut each flexible film 220a, 220b. In this state, as shown in the explanatory view of FIG. 5B, the recesses 240a of the fixtures 240 are arranged along the outer peripheral edges of the flexible films 220a and 220b that are thermally welded to the outer peripheral surface of the lead-out member 230. Is done.

  At this time, it is desirable that the recess 240a and the outer peripheral edges of the flexible films 220a and 220b abut. However, as will be described later, a gap that can prevent deformation of the flexible films 220a and 220b within a range in which the bag breakage of the flexible bag body 221 can be prevented is an outer peripheral edge of the recess 240a and the flexible films 220a and 220b. It may be vacant between.

  In addition, each fixing tool 240 brought into contact with the flexible films 220a and 220b accommodates the liquid storage container 220 in the above-described exterior box 210 (see FIG. 1), so that the flexible films 220a and 220b are attached to the flexible films 220a and 220b. The contact state can be maintained. At this time, whether or not the fixing tool 240 is directly fixed to the flexible films 220a and 220b by adhesion or the like is arbitrary. Further, the two fixing tools 240 and 240 may be fastened with a fastener (not shown) to maintain the contact state with the flexible films 220a and 220b.

(Function, effect)
In the liquid container 220 of the present embodiment configured as described above, when each fixture 240 is brought into contact with the flexible films 220a and 220b, as shown in the explanatory view of FIG. The recessed portion 240a of the fixture 240 is opposed or abutted across the outer peripheral edge portion where the outer peripheral surface of 230 is heat-welded and the portion where the lead-out member 230 inside thereof is not heat-welded.

  Therefore, even if an external impact is applied to the flexible bag 221 and the liquid filled therein flows, the flexible films 220a and 220b are led out as shown in the explanatory diagram of FIG. The fixture 240 restricts the displacement of the outer peripheral edge portion where the member 230 is thermally welded to the portion where the lead-out member 230 connected thereto is not thermally welded.

  On the other hand, as shown in the explanatory diagram of FIG. 7A, if the fixing device 240 is not brought into contact with the flexible films 220a and 220b, the flexible bag body 221 is filled with an impact from the outside. When the liquid flows, the relative displacement of the flexible films 220a and 220b described above cannot be restricted by the fixture 240. Therefore, as shown in the explanatory diagram of FIG. 7B, the portion of the flexible films 220a and 220b where the lead-out member 230 is not thermally welded is greatly displaced with respect to the outer peripheral edge portion where the lead-out member 230 is thermally welded. To do.

  This displacement is caused when the portion of the flexible films 220a and 220b where the lead-out member 230 is not thermally welded is strongly pulled with respect to the lead-out member 230 that is heat-welded to the outer peripheral edge portions of the flexible films 220a and 220b. Such a load is strongly applied to the boundary between both parts. Such a load may cause the flexible bag 221 to break at the boundary between the two portions.

  More specifically, the outer peripheral edge portion of the flexible films 220a and 220b, which is formed of a resin molded product and has a predetermined rigidity and is heat-welded, is connected to the lead-out member 230 that is a heat-welded object. It will have the same rigidity. On the other hand, the rigidity of the inner portions (portions containing the liquid) of the flexible films 220a and 220b that are connected to this portion and are not thermally welded to the lead-out member 230 are flexible films 220a and 220b. It only has the rigidity that it originally has. Therefore, as a matter of course, the rigidity of the flexible films 220a and 220b is significantly lower than the rigidity of the portion where the lead-out member 230 is thermally welded.

  Therefore, the displacement as shown in FIG. 7B is between the portions of the flexible films 220a and 220b where the outlet member 230 is thermally welded and the portions where the inner outlet member 230 is not thermally welded. If this occurs, tensile stress is concentrated on the flexible films 220a and 220b in the portions where the lead-out member 230 is not thermally welded, which is close to the boundary with the portion where the lead-out member 230 is not thermally welded. As a result, bag breakage is likely to be brought to the flexible films 220a and 220b in the portions where the tensile stress is concentrated and the lead-out member 230 is not thermally welded.

  On the other hand, in the liquid storage container 220 of the present embodiment, a large relative displacement of a portion where the lead-out member 230 is not thermally welded with respect to the outer peripheral edge portion where the lead-out member 230 of the flexible films 220a and 220b is heat welded, The fixture 240 regulates. For this reason, the tensile stress is not concentrated on the flexible films 220a and 220b in the portion where the lead-out member 230 is not thermally welded, which is close to the boundary with the portion where the lead-out member 230 is not thermally welded. Therefore, it is possible to prevent the flexible films 220a and 220b from being damaged and the flexible bag body 221 from being broken.

  Hereinafter, the relationship between the broken bag of the flexible bag body 221 and the presence or absence of the fixture 240 will be described based on the experimental results using the experimental apparatus 400 shown in the explanatory diagram of FIG. The experimental apparatus 400 includes a support plate 420 on which the weight 410 is placed, a guide bar 430 that supports the support plate 420 so that the support plate 420 can be moved up and down, and a liquid storage that is disposed on the lift locus of the support plate 420. It has a mounting table 440 on which the container 220 is mounted, and a stopper plate 450 that positions and supports the support plate 420 above the mounting table 440.

  The stopper plate 450 is supported so as to be swingable with respect to the frame 460 of the experimental apparatus 400. The stopper plate 450 is operated by operating a release button 470. The locking state at the position where the support plate 420 is supported is released and swings. When the stopper plate 450 swings, the positioning support of the support plate 420 is released, and the support plate 420 and the weight 410 fall into the liquid storage container 220 of the mounting table 440.

Using this experimental apparatus 400, the impact test of the liquid container 220 was performed by changing the weight of the weight 410. The specification of the liquid container 220 used in the test is
Three-sided bag with spout (outlet)
Flexible bag: film material = polyethylene / nylon multilayer, film thickness 125 μm, plane dimension = length (long side) 390 mm × width (short side) 117 mm (excluding spout), content 1000 ml
Lead member: Material = polyethylene, lead diameter 18.6 mm
Contents Type: Pseudo ink (Oil ink-jet ink without coloring material)
Specific gravity: 0.853
Filling volume: 1000ml
It is. Moreover, the fixture 240 used what has the width Wb (= 2.0Wa) of twice the heat welding width Wa with respect to the flexible films 220a and 220b of the derivation | leading-out member 230. FIG.

  Then, the weight 410 was freely dropped from the height of L = 550 mm onto the flexible bag body 221 of the liquid storage container 220 by swinging the stopper plate 450. Whether or not the flexible bag body 221 is broken by this experiment is shown in the explanatory view of FIG. 9 for each weight of the weight 410.

  As a result, when the fixture 240 is not used, the weight 410 is 1.5 kg and the flexible bag 221 is not broken, but the weight 410 is 1.8 kg, 2.0 kg, 2.5 kg, At 3.0 kg and 3.5 kg, the bags were broken. On the other hand, when the fixture 240 was used, the flexible bag 221 did not break even if the weight 410 had any weight.

  Based on the above results, the fixing member 240 is brought into contact with the flexible films 220a and 220b, and the lead-out member 230 is thermally welded to the outer peripheral edge portion where the lead-out member 230 of the flexible films 220a and 220b is heat-welded. It has been found that restricting the large relative displacement of the non-existing portion with the fixture 240 is effective in preventing the bag breakage due to the impact of the flexible bag body 221.

  Next, the width Wb of the fixture 240 is set to 1.0 Wa, 1.2 Wa, 1.5 Wa, and 2.0 Wa with respect to the thermal welding width Wa of the lead-out member 230 to the flexible films 220a and 220b. Whether or not the flexible bag body 221 is broken is shown in the explanatory view of FIG. 10 for each weight of the weight 410.

  As a result, when the width Wb of the fixture 240 is 1.0 Wa and 1.2 Wa, the weight 410 is 1.5 kg and the flexible bag 221 does not break, but the weight 410 is 1 The bags were broken at 8 kg, 2.0 kg, 2.5 kg, 3.0 kg, and 3.5 kg.

  When the width Wb of the fixture 240 is 1.5 Wa, the weight 410 is 1.5 kg, 1.8 kg, and 2.0 kg, and the flexible bag 221 does not break, but the weight 410 is The bags were broken at 2.5 kg, 3.0 kg, and 3.5 kg.

  Further, when the width Wb of the fixture 240 is 2.0 Wa, the weight 410 is flexible regardless of whether the weight 410 is 1.5 kg, 1.8 kg, 2.0 kg, 2.5 kg, 3.0 kg, or 3.5 kg. The characteristic bag body 221 did not break the bag.

  Here, when the flexible bag 221 is used for the ink cartridge 200 of the printing apparatus 100, the weight of the flexible bag 221 filled with ink is about 1.0 kg in the new ink cartridge 200. Become. In general, the ink cartridge 200 is handled at a height of 1 to 2 m above the ground when being transported or attached to or detached from the printing apparatus 100. Therefore, assuming that a new ink cartridge 200 is dropped from a height of 2 m above the ground level during handling, an external force of about 3.5 kg is applied to the flexible bag body 221 of about 1.0 kg.

  The force applied to the flexible bag 221 when the ink cartridge 200 is inserted into and removed from the cartridge mounting mechanism 30 of the printing apparatus 100 is approximately 3.0 kg.

  Therefore, if there is no broken bag even if the 3.5 kg weight 410 is freely dropped from the height of L = 550 mm to the flexible bag 221, the flexible bag 221 used in the ink cartridge 200 is It can be said that it has sufficient impact resistance.

  From the above results, the width Wb of the fixture 240 is set to be at least twice the thermal welding width Wa of the lead-out member 230 to the flexible films 220a and 220b. It was found to be effective in preventing the impact regardless of the magnitude.

  Although the upper limit of the width Wb of the fixture 240 is not clear, it should be noted that the liquid filling amount of the flexible bag 221 is reduced by bringing the fixture 240 into contact with the flexible films 220a and 220b. And it is preferable to set it as the dimension which can ensure the required liquid filling amount. For example, in the case of the fixture 240 used in the liquid container 220 having the specifications used in the impact test using the experimental apparatus 400 of FIG. 8, the upper limit of the width Wb is 4.5 times the thermal welding width Wa. Preferably, for example, when the thermal welding width Wa is 10 mm, the upper limit of the width Wb is preferably 45 mm. This upper limit is determined according to the liquid filling amount required for the flexible bag body 221 and the assembling property with the outer box 210.

  In the above-described embodiment, the fixing tool 240 has the same length as the short side of the flexible bag body 221, but the length of the fixing tool 240 is the opposite surface of the flexible films 220a and 220b. As long as a space for providing the recess 240a can be secured, the length may be shorter than the short side of the flexible bag 221. Of course, the length may be longer than the short side of the flexible bag 221.

DESCRIPTION OF SYMBOLS 1 Printing apparatus main body 30 Cartridge attachment mechanism 100 Printing apparatus 200 Ink cartridge 210 Outer box 220 Liquid storage container 220a, 220b, 220c, 220d Flexible film 221 Flexible bag 230 Outlet member 231 Outlet 240 Fixing tool 240a Concave 330 Arithmetic processing device 340 Operation panel 350 Upper surface device 400 Experimental device 410 Weight 420 Support plate 430 Guide bar 440 Mounting table 450 Stopper plate 460 Frame 470 Release button D2 Attaching / detaching operation direction Wa Thermal welding width Wb Fixing tool width X Lead-out port penetration direction

Claims (2)

A cylindrical lead-out member made of a resin molded product having a lead-out port and a peripheral edge where the lead-out members of a pair of flexible films are disposed are heat-welded to communicate the inside and the outside through the lead-out port. In a liquid storage container having a flexible bag body,
A pair of deformation restricting members abutting on the respective films from the surface side;
Each of the deformation regulating members is formed on a surface facing the film, and straddles an outer peripheral edge portion where the lead-out member of each film is heat-welded and a portion where the lead-out member inside thereof is not heat-welded. An opposing recess,
The recess is formed in the same shape corresponding to the outer shape of the lead-out member over the entire length of the deformation restricting member in the penetration direction of the lead-out port, and the portion of the film where the lead-out member is not thermally welded. Oppositely, the radial displacement of the outlet port with respect to the outer peripheral edge portion where the outlet member of the portion is thermally welded is regulated,
A liquid container characterized by that.   The concave portion has a dimension equal to or larger than a portion of the film facing the outer peripheral edge portion of the film in which the lead-out member is thermally welded in the penetration direction. The liquid container according to claim 1, wherein the liquid container is provided.

Images