JP2005040630A - Liquid storage bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid storage bag provided with a partition wall that can be easily peeled off and does not peel off due to a fall accident or the like.
An upper portion of a liquid storage bag is closed by a closing means that can be opened and closed like a chuck seal 2 and a liquid outlet 4 is provided at a lower portion so that the liquid containing bag can be easily peeled in the vicinity of the opening and closing means that can be opened and closed. A partition wall (weak seal portion 3) is provided. The internal space of the liquid storage bag is vertically and fluidly partitioned by the weak seal portion 3, and a liquid (for example, a concentrated enteral nutrient) is stored in the lower internal space (liquid storage chamber 1). Yes. The weak seal portion 3 has a central portion 31 formed in a mountain shape and is gradually widened in the direction of both end portions 32.
[Selection] Figure 1

Description

  The present invention relates to a liquid storage bag in which a liquid is stored in advance, and relates to an improvement of the invention of Patent Document 1 (Japanese Patent Laid-Open No. 11-285518).

  2. Description of the Related Art Conventionally, a method for injecting an enteral nutrient by inserting a catheter through the nose or mouth has been performed for patients who have difficulty in taking nutrients from the mouth. Specifically, enteral nutrients contained in enteral nutrition bags or enteral nutrition bottles are injected into a patient's body via an infusion set or catheter. Enteral nutrients are prepared by adding water or hot water to concentrated liquid or powdered enteral nutrients, prepared in other containers, and then transferred to enteral nutrition bags or enteral nutrition bottles. Or prepared directly in enteral nutrition bags or enteral nutrition bottles. However, the method of transferring after preparing in another container has the disadvantages that it takes time and effort to prepare another clean container and that there is a high possibility of contamination. Moreover, as what is directly prepared in an enteral nutrition bag, there exists a thing shown in patent document 2, for example. This is a bag-like container having a re-sealable liquid inlet containing a solid or liquid substance that is dispersed or dissolved in a liquid. In this embodiment, the liquid inlet is a chuck seal. There are disclosed ones that are configured and heat seal parts are provided outside the chuck seal, and the heat seal parts are cut off with scissors during use. However, the sealing property is poor, and the quality of the stored enteral nutrient may be affected, and the virgin proofing is difficult. Further, the configuration in which a heat-sealed seal portion is provided on the outside of the chuck seal has a drawback that the work efficiency is poor, such as the use of a scissors.

Therefore, one of the applicants of the present application has already proposed a liquid storage bag as shown in Patent Document 1 in order to solve the above drawbacks. This is closed at the top by a closing means that can be freely opened and closed, and is provided with a liquid outlet at the bottom, and is fluid-divided up and down by an easily peelable partition wall provided close to the closing means. A liquid is accommodated in the partitioned internal space. However, this has the drawback that if the partition wall width is reduced, the partition wall may be peeled off due to a fall accident or the like, but if the partition wall width is increased, the partition wall becomes difficult to peel off, and there is a need for improvement. It was.
Japanese Patent Laid-Open No. 11-285518 JP-A-57-86275

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a liquid containing beg having a partition wall that can be easily peeled off and does not peel off due to a fall accident or the like.

  As a result of intensive studies to solve the above problems, the present inventors can prevent the separation of the partition wall due to a fall accident by gradually widening the width of the partition wall toward both ends, and the center of the partition wall The present invention has been completed by conceiving that peeling is facilitated by forming the part into a rounded chevron. That is, according to the present invention, the inner space of the bag body in which the upper part is closed by a closing means that can be opened and closed and the liquid outlet is provided in the lower part is provided by an easily peelable partition wall provided in the vicinity of the closing means. A bag that is partitioned fluid-tightly in the upper and lower sides, and a liquid is contained in the partitioned lower space, wherein the partition wall is formed in a mountain shape with a rounded central portion, and both ends from the central portion. This is a liquid storage bag that is gradually widened toward the part. Here, in order to prevent contamination of the upper inner wall of the bag, the portion above the closing means may be sealed to seal the closing means, and the sealing portion is provided on the side seal portion that seals the closing means. A notch may be provided to facilitate removal. Moreover, it is preferable that the width | variety of the both ends of a partition is 2 times or more of the width | variety of a center part. The closing means is preferably a chuck seal. It is preferable that both ends of the chuck seal heat-seal adjacent upper portions so that liquid leakage does not occur after the chuck sheet is closed after preparation of the liquid agent. A concentrated enteral nutrient is preferred as the liquid contained inside.

  When the liquid storage bag of the present invention is used, when the liquid stored in the inside is a concentrated enteral nutrient, it can be stored for a long time without deterioration in quality, and the trouble of supplying water or the like can be saved. Moreover, since the virgin proof function by the partition (weak seal part) which can be peeled easily is also provided, a safety check can also be performed. In addition, the weak seal is shaped like a mountain with a rounded center and gradually widened toward both ends, making it easier to open by external compression and weakening due to drop impact, etc. Opening of the seal portion can be prevented.

Next, the present invention will be described with reference to the drawings.
FIG. 1 is a plan view showing an embodiment of the present invention.
The liquid storage bag shown in FIG. 1 is closed with an openable / closable chuck seal 2 at the top, and provided with a liquid outlet 4 at the bottom and can be easily separated in the vicinity of the chuck seal 2 (weak seal portion 3). ) Is provided. The internal space of the liquid storage bag is fluid-tightly partitioned vertically by the weak seal portion 3, and liquid is stored in the lower internal space (liquid storage chamber 1). And the weak seal | sticker part 3 has the center part 31 formed in the mountain shape, and the both ends 32 are widened.

  The liquid storage bag is made by stacking two sheets of synthetic resin sheets (including laminate sheets) such as polyethylene, polypropylene, polyamide (PA), polyester (PET), and ethylene-vinyl acetate copolymer, and welding the edges thereof. The body is formed with a closing means (chuck seal 2) and a weak seal portion 3 adjacent to the closing means at the upper portion, and a liquid outlet 4 is provided at the lower portion. The storage chamber 1) contains a liquid. In the case where the liquid stored in the liquid storage chamber 1 is stored for a long period of time or is easily oxidized, a synthetic resin sheet, such as laminated aluminum foil, is provided with oxygen impermeability. Preferably employed. In order to prevent liquid oxidation, at least the liquid storage chamber 1 may be covered with aluminum foil or the like. If necessary, a suspension hole 5 may be provided in the upper part of the liquid storage bag, so that the bag can be suspended from the drip stand and used. The suspending means is not limited to the suspending hole 5 and may be, for example, one in which a string is fixed to the upper part in a loop shape.

  The upper part of the liquid storage bag is a supply port 6 for supplying, for example, water or hot water for thinning the concentrated enteral nutrient, which is stored in advance, and the supply port 6 is a chuck seal as an openable and closing means 2 is closed. The chuck seal 2 has a structure in which a protruding line and a recessed line provided at opposing positions on the inner wall of the bag are fitted and closed, and can be opened and closed as necessary. In addition, as a closing means, you may employ | adopt the cover body which forms the supply port 6 in a cylindrical shape and fits in this supply port 6. FIG. Here, in order to prevent contamination of the upper inner wall of the bag, the chuck seal 2 may be sealed by sealing a portion above the chuck seal 2, and the side of the seal portion 8 that seals the chuck seal 2 may be sealed. A notch 9 may be provided to facilitate removal of the sealed portion. Further, in order to prevent liquid leakage after the chuck seal 2 is closed after preparation of the liquid agent, a heat seal portion 7 is provided on the upper portion adjacent to both ends of the chuck seal 2 by a method such as heat sealing. Is preferred.

  The inner space of the bag is partitioned fluidly up and down by, for example, a weak seal portion 3 as an easily peelable partition wall provided near the chuck seal 2 on the lower side. The weak seal portion 3 can be easily peeled and opened by pressing the liquid storage chamber 1 from the outside. For example, the weak seal portion 3 is formed by heat-sealing a weak welding sheet between sheets constituting the bag. can do. Moreover, it can form by controlling to the temperature which the sheet | seat which comprises a bag does not weld, and pressurizing from a strip shape outside. The weak seal portion 3 is formed in a so-called rounded mountain shape with a central portion 31 protruding upward, and is gradually widened in the direction of both end portions 32. By forming the central portion into a convex shape, that is, a rounded mountain shape, the peeling that occurs in one part of the central portion 31 is transmitted along the mountain line and opened. Further, by forming the seal width so as to gradually increase toward the both end portions 32, it is possible to prevent the weak seal portion from being opened due to a drop impact that tends to occur at both ends of the weak seal portion 3. The width of both end portions 32 of the weak seal portion 3 is preferably at least twice the width of the central portion 31, more preferably at least three times. The weak seal portion 3 is provided close to the chuck seal 2, but if it is provided too close, there is a risk that the weak seal portion 3 may be accidentally opened to the chuck seal 2 when the weak seal portion 3 is opened. It is preferable to set an interval of 5 mm or more.

[Test Example] Using a plastic laminate sheet with a wall thickness of 99 μm, the liquid storage bag (Example) of the present invention characterized by a weak seal part and the liquid storage bag (Comparative Example) before improvement are weak due to falling. When the opening test (drop test) of the seal portion was performed, the results shown in Table 1 were obtained. The size of the liquid storage bag was 280 mm long and 200 mm wide, the heat seal width of the seal portion was 10 mm, the seal strength was 40 N / 15 mm, and the heat seal strength of the weak seal portion was 12 N / 15 mm. Moreover, the width | variety of the weak seal part was 3 mm in the center part in the Example, and 8 mm of both ends, and was 3 mm uniformly in the comparative example. The drop test is performed in units of outer boxes (18 bags), and the drop method is 6 times from the height of 60 cm after the humidity is adjusted in an atmosphere of 20 ° C. and 65% RH for 24 hours. Corner 1, edge 3, side surface 2), a method of dropping from a height of 90 cm twice (location colliding with the floor at the time of dropping: bottom surface) was adopted.
As the plastic laminate sheet, a laminate sheet having an outer layer of polyester and an inner layer of unstretched propylene: PET / deposited PET / PA / CPP is adopted (however, PET is grade name PC, manufactured by Unitika Ltd.). Deposition PET is grade name 1031HG, manufactured by Toyo Metallizing Co., Ltd .; PA is grade name ONMBRT, manufactured by Unitika Ltd .; CPP is grade name C1506, manufactured by Toyobo Co., Ltd., and weakly welded sheet is polypropylene (grade) A sheet of name 9501-kai, Toray Synthetic Film Co., Ltd.) was employed.
From Table 1, it can be seen that in the liquid storage bag of the present invention, the weak seal portion of the liquid storage bag is prevented from being opened due to a drop accident.

  When using the liquid storage bag of the present invention, first, the seal portion 8 that tears from the notch 9 and seals the chuck seal 2 is removed, the liquid storage chamber 1 is pressed from the outside, and the weak seal portion 3 is opened. The seal 2 is opened and water or hot water is supplied. Next, the chuck seal 2 is closed, the bag is held, and the concentrated enteral nutrient in the liquid storage chamber 1 is mixed with water or hot water. Then, the closing member 41 of the liquid outlet 4 may be threaded, and a rubber tube type drip set may be connected thereto. The bag may contain a predetermined amount of purified water or the like so that it can be mixed with the powder dialysis agent.

It is a schematic plan view which shows one Example of this invention.

Explanation of symbols

1 Liquid storage chamber 2 Chuck seal (closing means)
3 Weak seal part (Easily peelable partition)
31 Central portion 32 Both ends 4 Liquid outlet 41 Closing member 5 Hanging hole 6 Supply port 7 Heat seal portion 8 Seal portion 9 Notch

Claims (7)

The inner space of the bag body whose upper part is closed by an openable and closable closing means and the liquid outlet is provided in the lower part is provided in the vicinity of the closing means and is provided in the lower part and can be easily peeled. A bag that is fluid-divided vertically by a partition wall, and in which a liquid is contained only in the partitioned lower space, the partition wall having a central portion facing the openable closing means side A liquid storage bag which is formed in a rounded mountain shape and whose seal width is gradually widened from the center toward both ends. 2. The liquid storage bag according to claim 1, wherein a portion above the openable closing means is sealed to seal the closeable closing means. The liquid storage bag according to claim 2, wherein a notch is provided in a side seal portion for sealing the openable and closable closing means. The liquid storage bag according to any one of claims 1 to 3, wherein the width of both end portions of the partition wall is at least twice the width of a rounded mountain-shaped portion toward the openable and closable closing means side in the center portion. The liquid storage bag according to claim 1, wherein the openable / closable closing means is a chuck seal. The liquid storage bag according to claim 5, wherein upper portions adjacent to both end portions of the openable and closable closing means are heat-sealed. The liquid storage bag according to any one of claims 1 to 6, wherein the liquid is a concentrated enteral nutrient.

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