JPWO2007011009A1 - Liquid storage bag - Google Patents

Abstract

In a liquid storage bag having a closing means on the upper part, a notch that does not pose a risk of injury to fingers or the like is removed from the seal portion above the closing means, and further as a liquid outlet provided at the lower part of the liquid storage bag Provided is a liquid storage bag provided with a cap that can be plugged without threading the tip of a liquid outlet protrusion. Specifically, a notch having a rounded outer corner is provided. And a liquid storage bag in which the liquid lead-out protrusion is covered with a cap provided with an engagement portion for engaging a gripping portion for threading the thin-walled portion inside, and the free rotation of the cap is controlled by a stationary member. .

Description

  The present invention relates to a liquid storage bag that stores liquid in advance.

  2. Description of the Related Art Conventionally, a method for injecting an enteral nutrient solution by inserting a catheter from the nose or mouth has been performed for patients who are difficult to take nutrients from the oral cavity. Specifically, an enteral nutrient contained in an enteral nutrition bag or an enteral nutrition bottle is injected into a patient's body through an infusion set or a catheter.

  Enteral nutrients are prepared by adding water or hot water to concentrated liquid or powdered enteral nutrients, and prepared in other containers and then transferred to enteral bags or enteral nutrition bottles. It can be replaced or prepared directly in an enteral feeding bag or enteral feeding bottle. However, if it is prepared in another container and then transferred to another container, it is necessary to prepare another clean container, which takes time and is likely to be mixed with dust. There is a problem.

Moreover, as what prepares an enteral nutrient directly in an enteral nutrition bag, there exists what is disclosed by Unexamined-Japanese-Patent No. 57-86275 (patent document 1), for example. This is a bag-like container equipped with a re-sealable liquid inlet that contains a solid or liquid substance that is dispersed or dissolved in a liquid, and is composed of a chuck seal as a liquid inlet, or a chuck. A seal part that is heat-sealed (heat-sealed) is provided on the outside (upper side) of the seal, and the heat-sealed part is cut off with scissors during use. When the liquid injection port is composed only of a chuck seal, the sealing performance is poor, there is a risk of affecting the quality of the stored enteral nutrient, and virgin proofing is difficult.
Further, in the configuration provided with a heat seal portion that seals the outside (upper side) of the chuck seal, there is a poor workability such as opening the heat seal portion with scissors.

  As an improvement on this point, Japanese Patent Application Laid-Open No. 2001-299875 (Patent Document 2) discloses an internal space of a bag body in which an upper portion is closed by a closing means that can be freely opened and closed and a liquid outlet is provided at a lower portion. A bag which is fluid-tightly partitioned vertically by an easily peelable partition wall provided in the vicinity of the closing means, and in which a liquid is contained in the partitioned lower space, There is disclosed a liquid storage bag in which a portion is formed in a mountain shape and both end portions are widened.

In this liquid storage bag, a closing means, for example, a portion above the chuck seal is heat-sealed to seal the closing means so that the sealing portion can be easily removed. Means for providing a notch are disclosed.
In addition to this type of liquid storage bag, various techniques for providing notches in the sealing portion of the bag body are also proposed in order to facilitate the opening of three-side seal type or four-side seal type bag bodies that store various liquids. Has been.

  However, the shape of the notches provided in these seal portions is generally a V-shaped notch having a sharp angle, and there is a risk of injury from the sharp notch angle of the fingertip or the like. there were.

  On the other hand, the liquid outlet provided in the lower part of the liquid storage bag is for connecting the enteral nutrient prepared in the liquid storage bag to, for example, a catheter and injecting it into the patient's body. Accordingly, the structure is a derivation projection for deriving the liquid content of the bag body, for example, a thin-walled portion that is opened by threading the tip of the projection, and the thin-walled portion is threaded. It has the structure which forms the holding part.

  By the way, liquid storage bags such as such enteral nutrition bags are usually configured to be sterilized after filling with the contents liquid to make the outside of the container aseptic. In addition, when the thin portion is threaded and opened, the finger touches the portion connecting the catheter or the like on the distal end side of the container projection, so that there is a risk of contamination by bacteria or the like.

  Therefore, in order to solve such a problem, a technique has been proposed in which a cap for aseptically covering the liquid outlet protrusion is provided. As one of the techniques, for example, a content for injecting a content liquid into another is proposed. A technique has been proposed in which a thin-walled portion is opened in a sterile state in a liquid container that has a liquid-derived protruding portion and can be opened by threading the thin-walled portion of the protruding portion (Japanese Patent Application Laid-Open No. 2001-2001). -70399 gazette: Patent Document 3).

In this method, since the liquid lead-out projection is aseptically covered with a cap including a gripping portion for cutting out the thin-walled portion, that is, aseptic cap closure, There has been a problem that an excessive rotational force is applied when the cap is plugged, which may cause the thin portion to be threaded.
JP-A-57-86275 JP 2001-299875 A JP 2001-70399 A

  Therefore, in view of the above points, the present invention provides a liquid storage bag having a closing means such as a chuck seal in an upper portion that previously stores a liquid such as an enteral nutrient, and a sealing portion at a portion above the closing means. About the notch of the side seal part provided for easy removal, providing a notch without risk of injury to fingers and the like, and further, a liquid outlet protrusion as a liquid outlet provided at the lower part of the liquid storage bag, It is an object of the present invention to provide a cap capable of plugging the protrusion without threading the gripping portion provided at the tip of the protrusion.

The present invention for solving this problem has the following configuration.
That is, as one aspect of the present invention,
(1) The upper portion is closed by an openable and closable closing means, the periphery is heat-sealed, and a liquid outlet projection having a flow path through which the content liquid can flow is provided at the lower portion. In the liquid storage bag formed by forming a thin portion to be opened by threading the portion and a gripping portion for threading the thin portion,
A notch is provided in the heat seal part on both sides located above the closing means, and
Covering the liquid outlet protrusion with a cap provided with an engagement portion for engaging a gripping portion for threading the thin-walled portion inside;
A liquid storage bag characterized by the above.

More specifically, the present invention provides:
(2) The liquid storage bag according to 1 above, wherein the notch provided in the heat seal part has a shape in which an outer corner is rounded;
(3) The liquid according to 1 or 2 above, wherein the notch provided in the heat seal part has a constant width of 1.0 mm or less from the notch opening end along the notch opening direction. Containment bag;
(4) The liquid storage bag according to 1 or 2 above, wherein the notch piercing property (notch compressive strength) is 1.0 N / mm or less;
(5) The liquid storage bag according to 1 or 2 above, wherein the notch provided in the heat seal has a V shape in which the innermost part of the shape of the notch is concentrated at one point;
(6) The liquid storage bag according to 1 or 2 above, wherein the notch provided in the heat seal part is shorter than the notch opening width in the range of notch depth width of 1 to 2 mm;
(7) In the above 1 or 2, wherein the notch provided in the heat seal part is symmetric about the line connecting the notch shape from the innermost part of the notch to the notch opening or is asymmetric. A liquid containing bag as described;
It is.

In addition, the present invention, as yet another aspect,
(8) The liquid storage bag according to 1 above, wherein free rotation of the liquid outlet protrusion of the cap is controlled by a stationary member inside the cap covering the liquid outlet protrusion;
It is.

More specifically, the present invention provides:
(9) A stationary member that controls the free rotation of the cap that covers the liquid lead-out protrusion has a cut-out defect portion having a fitting portion that fits a protrusion into the innermost portion provided on the cap, and the liquid discharge protrusion. The liquid storage bag according to 1 or 8 above, wherein the liquid storage bag is provided with a protrusion that is fitted to a fitting portion at an innermost portion of the cut-out defect portion provided in the portion;
(10) The liquid storage bag according to 1 or 8 above, wherein the cut-out defect portion provided in the cap that covers the liquid lead-out projection has a V shape;
(11) The protrusion provided on the liquid outlet protrusion with respect to the fitting portion of the V-shaped cut provided on the cap, wherein the cap plug covering the liquid outlet protrusion is a stationary member provided on the liquid outlet protrusion The liquid storage bag according to 1 or 8 above, wherein the bag is a cap that can be plugged together without fitting the threaded portion of the thin portion as a fitting to an object;
(12) The liquid storage bag according to 1 or 8 above, wherein the torque of the cap covering the liquid lead-out projection is 10 N / cm or more;
(13) The liquid container as described in the above item 1 or 8, wherein the thin portion provided at the tip of the protrusion is threaded by rotating the cap covering the protrusion for discharging the liquid with an external force. bag;
It is.

  The container provided by the present invention is provided with a notch having a rounded outer corner as a starting part for opening the upper part of the container for taking out contents, for example, a chuck seal of a liquid storage bag By providing a notch having a shape with rounded outer corners on the heat seal part on both sides located above the closing means, etc., the risk of injury due to piercing fingers etc. is eliminated, It has the advantage that it can be used very safely.

Further, the liquid outlet protrusion provided at the lower portion of the liquid storage bag is covered with a cap provided with an engagement portion for engaging a gripping portion for threading the thin portion inside, and the liquid is extracted from the cap by a stationary member. Controlling the free rotation of the projection for use has the advantage of being hygienic and capable of plugging the cap without screwing the thin wall portion during manufacture.
Furthermore, when the cap is opened, the cap itself can be rotated as it is, so that the thin portion can be screwed together with the cap and can be connected to other catheters in that state. Has the advantage that there is no danger of being contaminated by bacteria or the like.

It is the top view which showed the basics of the liquid storage bag of this invention typically It is an enlarged view of the notch shape based on one Example of this invention. It is an enlarged view of the notch shape based on another Example of this invention. It is an enlarged view of the notch shape based on another Example of this invention. It is the top view which showed typically the basics about the protrusion for liquid derivation of this invention. It is the top view which showed the basics about the cap of this invention typically.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Liquid storage bag 20 Chuck seal 21 Heat seal part 22, 23 Side heat seal part 8 Notch 81 Round part 82 Notch notch part 83 Notch innermost part 30 Liquid extraction | projection part 31 Port 34 Thin part 35 Gripping part 36 Protrusion 40 Cap 42 Notch missing part 43 Fitting part 50 Content space

Hereinafter, the present invention will be described in more detail with reference to the drawings.
FIG. 1 is a plan view schematically showing the basics of the liquid storage bag of the present invention. The liquid storage bag 1 shown in FIG. 1 is closed at its upper part by a closing means that can be freely opened and closed, for example, a chuck seal 20. A liquid outlet protrusion 30 is provided on the base, and the protrusion is plugged with a cap 40.

  The liquid storage bag 1 is formed by stacking two sheets of synthetic resin sheets (including laminates) such as polyethylene, polypropylene, polyamide (PA), polyester (PET), and ethylene-vinyl acetate copolymer, and welding the edges thereof. It is formed in a bag shape, provided with a closing means, for example, a chuck seal 20 at the upper part, and provided with a liquid outlet projection 30 as a liquid outlet at the lower part, and a content space 50 (liquid storage) below the chuck seal 20. The basic configuration is that the liquid is contained in the chamber.

  However, the liquid storage bag 1 can be variously modified in addition to having the basic configuration. For example, a weak seal portion (not shown) is provided further below the chuck seal 20. In order to divide the content space 50 into two chambers, or to suspend the liquid storage bag from a stand or the like, for example, a suspension hole (not shown) is provided at the top of the bag. May be.

  Further, when the liquid stored in the content space 50 (liquid storage chamber) is stored for a long period of time or is easily oxidized, oxygen such as laminating aluminum foil as a synthetic resin sheet is used. Those imparted with impermeability are preferably used.

  The upper part of the liquid storage bag 1 in the present invention is a supply port 6 for supplying, for example, water or hot water for thinning a concentrated enteral nutrient, which is stored in advance, and the supply port 6 can be freely opened and closed. It is closed with a chuck seal 20 as a closing means. The chuck seal 20 has a structure in which a pair of convex and concave shapes provided at opposing positions on the inner wall of the bag are fitted and closed, and can be opened and closed as necessary. It is.

  On the upper side of the chuck seal 20 which is a closing means, there is a heat seal portion 21 for sealing the chuck seal 20, and in order to make it easier to remove the sealed portions in the heat seal portions 22 and 23 on both sides located above the closing means. Notches 8 are provided.

  As one aspect of the liquid storage bag provided by the present invention, the notch 8 is provided as a notch having a shape in which the outer corners are rounded. An enlarged view of the shape of the notch 8 is shown in FIG.

  In other words, the shape of the notch of the present invention may basically be any shape as long as the outer corner has a roundness 81. By having this roundness, the notch portion has no acute angle, and there is a risk of injury to the fingertip or the like. A sex notch is provided. This outward roundness is imparted by a round shape having an appropriate radius (R).

  Such a round shape is obtained by, for example, using a Tensilon universal tester as a 10 mm thick silicon rubber as human skin and using a compression tester at a constant speed (eg, 10 mm / min, 100 mm / min, or 1000 mm / min 3 It has been found that when the compression is performed with the seed, the shape of the notch piercing property (notch compression strength) is 0.7 or less. Even when this value was evaluated by tactile sensation after compressing the finger with respect to the actual notch shape, the piercing property with respect to the finger was low.

  In addition, since the shape of the notch itself is small, for example, about 6 mm in width of the notch opening, for example, even when trying to process such a notch in-line when manufacturing a liquid storage bag, the notch formation portion of the bag Slightly deviates, and it is difficult to process a notch having a round shape with a uniform shape.

  Therefore, in the manufacture of the notch of the present invention, a die having a constant notch width of at least 1.0 mm from the notch opening end along the opening direction of the notch is used, that is, with respect to the side heat seal surface. It has been found that at least 1.0 mm should be provided with a portion 82 cut at right angles to adjust the notch formation site.

  By making this adjustment, the notches formed on both sides of the bag are at least 1.0 mm from the notch opening end along the opening direction of the notch, even if there is a portion where the notch width is constant, By having a round shape, the contact point with the finger increases, so that the piercing property is eased and there is no injury.

  Furthermore, in the notch of the present invention, if the innermost portion 83 of the notch shape is a V-shape that concentrates at one point, the seal portion 21 of the liquid storage bag can be easily opened by the notch. .

  Further, the notch of the present invention may have any shape as long as the outer corner has a roundness 81, and various combinations of both the length of the notch opening and the length of the depth are possible. is there. However, according to the study by the present inventors, it was found that the notch shape should be shorter than the notch opening width in the range of notch depth of 1 to 2 mm.

Further, in the notch of the present invention, its shape can be changed variously, for example, it may be symmetrical with respect to a line connecting the notch opening and the notch opening, or It may be asymmetric.
Another embodiment of the notch shape based on such deformation is shown in FIGS. The reference numerals in each figure are the same as those in FIG. The shape of the notch 8 based on the embodiment shown in FIG. 3 is asymmetric with respect to the line connecting the notch-shaped innermost portion 83 and the notch opening, and is based on the embodiment shown in FIG. The shape of the notch 8 is symmetrical with respect to the line connecting the notch shape innermost portion 83 and the notch opening, but the width of the notch opening compared to the notch shape shown in FIG. And the notch depth width ratio are different.

  Regardless of the notch, the shape is basically a shape in which the outer corners are rounded 81, and the notch width is constant at least 1.0 mm from the notch opening end along the notch opening direction. It has the shape which is.

  About the liquid storage bag which has these notch shapes, the notch piercing property test was done and the evaluation was performed. Moreover, it tested about the stability of the bag supposing the time of actual liquid filling, and also the distribution | circulation.

Test 1: Evaluation test of notch piercing property There is no data that specifically quantifies the notch piercing property. Therefore, in comparison with the existing shape notch (V-shaped notch), we studied a method to clarify the difference in piercing property, specifically, compression to silicon rubber at a constant speed with a compression tester And the value at that time was measured.
Testing machine: Tensilon universal testing machine Target: Silicon rubber with a thickness of 10mm (as a role of human skin)
Compression rate: 10 mm / min, 100 mm / min, or 1000 mm / min. Three test samples:
Product of the present invention: a notch in a bag that is filled with an enteral nutrient solution in the liquid storage bag having the notch shape shown in FIG. 2 and then retorted and opened manually.
Current bag: A notch in a bag that is filled with enteral nutrient solution in a V-shaped notch shape and then retorted and opened manually.
The results are summarized in Table 1 below.

  As can be seen from the results shown in the table, the notch of the present invention had a lower piercing (compression) strength. In addition, as a result of compressing directly on the finger and performing evaluation by tactile sensation, the notch of the present invention has a lower piercing property. Since the piercing also affects the speed at the time of piercing, it is difficult to judge only by the numerical value, but it is considered that the piercing property is positively affected by setting it to 1.0 N / mm or less, preferably 0.7 N / mm or less. .

Test 2: Stability evaluation test at the time of liquid filling and distribution It was evaluated whether there were any problems such as catching on the notch on the production line and catching on the notch during distribution.
The liquid storage bag having the notch shape shown in FIG. 2 was used.
[Test items]
(1) Individual drop of liquid storage bag: 120 cm (environment: −5 ° C. and 23 ° C.) 2 times (2) Actual transport test: transporting the liquid storage bag to 1000 km using courier (3C / S)
(3) Filling production line test: Entering nutrient solution filling test using actual filling machine

[result]
Single drop of liquid container bag (1) Single drop of liquid container bag No notch breakage or breakage was observed at both -5 ° C and 23 ° C.
(2) Actual transport test Notch catching, tearing, broken bag, and cutting were not confirmed.
(3) Filling production line test As a result of testing on the production line, the line suitability was good with no significant difference from the existing product (V-shaped notch).

  From the above results, it was confirmed that the liquid storage bag having the notch shape of the present invention has no risk of injury caused by piercing the hand or the like and can be used safely.

On the other hand, a liquid outlet protrusion 30 is provided at the bottom of the liquid storage bag of the present invention, and the protrusion is plugged with a cap 40.
The specific shape of the liquid lead-out projection 30 is shown in FIG. FIG. 5 is a plan view schematically showing the basics of the liquid lead-out projection of the present invention.

  In the figure, 30 is provided with a port 31 for welding the liquid outlet protrusion to the bag body, the liquid outlet protrusion is provided with a liquid outlet passage 32 inside, and its tip 33 is a screw. It has a configuration in which a thin portion 34 and a grip portion 35 for threading the thin portion 34 are formed so as to be opened by cutting.

  In the liquid container bag of the present invention, for example, after preparing an enteral nutrient, the grip 35 provided on the liquid outlet protrusion 30 is threaded at the thin-walled portion 34 by rotation or the like by human power, and other catheters, etc. However, a configuration is adopted in which the liquid outlet protrusion 30 is covered with a cap 40 provided with an engagement portion for engaging a grip portion 35 for threading the thin portion 34 therein.

  In addition, a stationary member 41 (not shown in the drawing) for controlling the free rotation of the cap 40 at the liquid outlet projection is provided. Includes a notch defect portion 42 having a fitting portion for fitting a projection to the innermost portion provided in the cap, and fitting of the innermost portion of the notch defect portion 42 provided in the liquid lead-out protrusion portion. The protrusion 36 is fitted to the portion 43. Specifically, the cut defect 42 provided in the cap 40 preferably has a V-shape.

  Such a cap is shown in FIG. That is, the cap 40 is provided with an engagement portion 44 that engages the grip portion 35 for threading the thin-wall portion 34 inside the liquid outlet projection 30, and then the stationary member 41 is attached to the cap 40. A cut-out defect portion 42 is provided as one of the constituent members, and a fitting portion 43 for fitting a protrusion 36 provided in the liquid lead-out protrusion 30 as the other stationary member into the innermost portion of the cut-out defect portion 42. Is provided.

The structure of the liquid lead-out protrusion 30 and the cap for plugging it is not limited to the above, and various modifications are possible as long as it has the basic configuration described above. . For example, the shape of the cut defect 42 provided in the cap is not limited to the V-shape, and may be a U-shape.
Moreover, the position of the fitting part 43 which fits the other protrusion 36 which comprises the stationary member 41 provided in the cut | notch defect | deletion part 42 of a cap can also be adjusted combining suitably.

  The liquid creation protrusion 30 and the cap 40 provided at the lower part of the liquid storage bag according to the present invention as described above are provided on the liquid discharge protrusion 30. The cap 40 covers the liquid discharge protrusion 30. This is performed as fitting to the protrusion 36 provided on the liquid outlet protrusion 30 with respect to the fitting portion 43 of the V-shaped cut provided on the cap which is the stationary member 41. Therefore, when the cap 40 is plugged into the liquid outlet projection 30, the direction of the cap 40 plugging is ensured, and the thin portion 34 can be plugged without being threaded during manufacture.

  The cap 40 that covers the liquid outlet protrusion 30 has a large torque because its free rotation is controlled by the stationary member 41, and the thin portion 34 of the cap 40 that has been once plugged due to the free rotation of the cap 40 has a large torque. Threading can be avoided. That is, in the conventional cap, the torque is small, and free rotation is likely to occur. Therefore, by the free rotation, the gripping portion 35 provided on the liquid outlet projection is rotated in cooperation with the thin cap. Although there is a possibility that the portion 34 is threaded, the cap 40 of the present invention avoids such a drawback.

On the other hand, in use, the cap 40 covering the liquid outlet projection 30 is rotated by an external force, whereby the thin portion 34 provided at the tip of the projection is threaded integrally with the cap 40, and in this state It is necessary to connect to another catheter or the like.
According to the studies by the present inventors, the torque of the cap 40 with respect to the liquid outlet projection 30 is 10 to 25 N / in order to control the free rotation of the cap 40 and to thread the thin portion 34 by external force. If it was cm, it was found that inadvertent opening could be prevented, and excessive force was not required for opening.
This was shown by measuring the opening strength of the cap.

Test 3: Measurement of cap opening strength For the liquid storage bag of the present invention in which a cap whose free rotation was controlled was plugged, the grip provided on the liquid outlet protrusion was rotated integrally by rotating the cap. Thus, the rotational force (torque) required to thread the thin portion was compared with the rotational force of the cap required to thread the thin portion in the current liquid storage bag.

[Method]
For the ten liquid storage bags with caps controlled for free rotation according to the present invention, the cap is set on a torque meter, the rotational force required to rotate the port and thread the thin-walled portion is measured. (Torque meter, SINPO, TNK-50B-5 type).
As a control, the rotational force of the cap required for threading the thin-walled portion was similarly measured for seven current liquid storage bags.
[result]
The results are shown in Table 2 below.

  As can be seen from the results shown in the table, in the liquid storage bag of the present invention, the torque of the cap is large and its free rotation is controlled, but in the current bag, the torque is small. And free rotation is likely to occur. On the other hand, the torque force of the cap according to the present invention was able to easily thread the thin portion as an external force.

As described above, the liquid storage bag provided by the present invention is provided with notches having a shape in which the outer corners are rounded in the heat seal portions on both sides located above the closing means such as a chuck seal, for example. This eliminates the risk of injury due to piercing the fingers and the like, and can be used extremely safely.
Furthermore, the notch shape of the present invention is not limited to the opening start portion at the top of the liquid storage bag as described above, and the notch having a shape in which the outer corners are rounded as the opening notch in any container form. By providing, it is possible to eliminate the risk of injury due to piercing fingers and the like, which contributes to safety.

  Further, the liquid lead-out protrusion provided at the lower portion of the liquid storage bag is covered with a cap provided with an engagement portion for engaging a gripping portion for threading the thin-walled portion inside, and the liquid lead-out of the cap is performed by a stationary member. By controlling the free rotation of the projecting protrusion, the cap can be plugged without sacrificing the thin-walled portion during manufacturing.

Furthermore, when the cap is opened, the cap itself can be rotated as it is, so that the thin portion can be screwed together with the cap and can be connected to other catheters in that state. The industrial applicability is enormous because there is no danger of being contaminated by bacteria or the like.

Claims (13)

The upper part is closed by an openable / closable closing means, the periphery is heat-sealed, and a liquid outlet protrusion having a flow passage through which the content liquid can flow is provided at the lower part, and the tip is screwed onto the protrusion. In the liquid container bag formed by forming a thin portion to be opened by cutting and a gripping portion for threading the thin portion,
A notch is provided in the heat seal part on both sides located above the closing means, and
Covering the liquid outlet protrusion with a cap provided with an engagement portion for engaging a gripping portion for threading the thin-walled portion inside;
A liquid containing bag.   The liquid storage bag according to claim 1, wherein the notch provided in the heat seal portion has a shape in which an outer corner portion is rounded.   3. The liquid storage bag according to claim 1, wherein the notch provided in the heat seal part has a constant width of 1.0 mm or less from the notch opening end along the notch opening direction. .   The liquid storage bag according to claim 1 or 2, wherein the piercing property (notch compression strength) of the notch is 1.0 N / mm or less.   The liquid storage bag according to claim 1 or 2, wherein the notch provided in the heat seal has a V shape in which the innermost part of the shape of the notch is concentrated at one point.   3. The liquid storage bag according to claim 1, wherein the notch provided in the heat seal portion is shorter than the notch opening width in the range of notch depth width of 1 to 2 mm.   The notch provided in the heat seal part is symmetric about the line connecting the notch shape from the innermost part of the notch to the notch opening, or asymmetrical, according to claim 1 or 2. Liquid storage bag.   The liquid storage bag according to claim 1, wherein a free rotation of the cap in the liquid outlet protrusion is controlled by a stationary member inside the cap that covers the liquid outlet protrusion.   A stationary member that controls the free rotation of the cap that covers the liquid lead-out protrusion is provided in the cutout defect portion having a fitting portion that fits a protrusion in the innermost portion provided in the cap, and the liquid discharge protrusion. The liquid storage bag according to claim 1, further comprising a protrusion that fits into the innermost fitting portion of the cut defect portion.   The liquid storage bag according to claim 1 or 8, wherein the cut-out defect portion provided in the cap covering the liquid lead-out projection has a V shape.   The cap plug covering the liquid outlet protrusion is a stationary member provided on the liquid outlet protrusion, and the protrusion provided on the liquid outlet protrusion with respect to the fitting portion of the V-shaped cut provided on the cap. The liquid storage bag according to claim 1, wherein the cap is a cap that can be plugged without threading the thin-walled portion in cooperation.   The liquid storage bag according to claim 1 or 8, wherein the torque of the cap covering the liquid lead-out protrusion is 10 N / cm or more. The liquid storage bag according to claim 1 or 8, wherein a thin portion provided at a tip of the protrusion is threaded by rotating a cap that covers the protrusion for discharging the liquid by an external force.

Images