Packaging bag for preventing citric acid type hemodialysis concentrated dry powder from caking

Abstract

The utility model relates to the technical field of packaging bags, in particular to a packaging bag for preventing citric acid type hemodialysis concentrated dry powder from caking, which comprises an outer packaging bag and an inner packaging bag wrapped inside the outer packaging bag, the inner packaging bag is provided with an inner sealing strip and an outer sealing strip, and the outer sealing strip is arranged around the outer side of the inner sealing strip and is spaced from the inner sealing strip. The inner sealing strip divides an inner cavity of the inner packaging bag into a storage cavity and a drying cavity, the storage cavity is defined by the inner sealing strip and the inner wall of the inner packaging bag, the drying cavity is defined by the inner sealing strip, the outer sealing strip and the inner wall of the inner packaging bag, a breathable packaging bag is arranged in the drying cavity, a drying agent is packaged in the breathable packaging bag, and the breathable packaging bag is arranged around the inner sealing strip. The outer side of the breathable packaging bag is fixed to the outer sealing strip, and the rest of the breathable packaging bag is not connected with the inner packaging bag. Water vapor is prevented from permeating into the inner packaging bag to enable dry powder to absorb moisture, the quality guarantee period of the dry powder is prolonged, and medication safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging bags, in particular to a packaging bag for preventing caking of citric acid type hemodialysis concentrated dry powder. Background Art

[0002] Hemodialysis can improve the high toxin state in patients with renal failure and uremia. Compared with acetate hemodialysis concentrate, citric acid type hemodialysis concentrated dry powder has good anticoagulant properties and plays a role in local anticoagulation. In addition, citric acid type hemodialysis concentrated dry powder has good biocompatibility, can improve the solute clearance rate, does not stimulate monocytes to produce inflammatory cytokines and endothelial cells, and can enable patients to restore their normal immune function. It is currently the most physiological hemodialysis concentrate.

[0003] Citric acid type hemodialysis concentrate contains glucose which is prone to breed bacteria, and magnesium chloride, calcium chloride, etc. are prone to absorb moisture and cake. Therefore, the packaging needs to have waterproof sealing performance. Most of the existing hemodialysis concentrated dry powder packaging bags use multi-layer co-extruded infusion bags for packaging. The heat seal may not be tight enough, and moisture in the air enters the inner packaging bag, causing caking, resulting in a short shelf life and affecting the safety of drug use.

[0004] CN205854871U discloses a packaging bag for compound amino acid hemodialysis concentrate, including an outer packaging bag, an inner packaging bag and an antioxidant bag arranged inside the outer packaging bag. The outer packaging bag is a high-barrier plastic bag, the inner packaging bag is a multi-layer co-extruded infusion bag, and the antioxidant bag is a non-woven fabric bag, and the antioxidant bag contains an antioxidant inside. However, in this packaging bag, the inner packaging bag and the antioxidant bag are separately arranged, and the antioxidant bag cannot completely prevent oxygen or moisture from entering the inner packaging bag. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a packaging bag for preventing caking of citric acid type hemodialysis concentrated dry powder, which can avoid water vapor from penetrating into the inner packaging bag to make the dry powder absorb moisture, extend the shelf life of the dry powder, and improve the safety of drug use.

[0006] The packaging bag for preventing caking of citric acid-based hemodialysis concentrated dry powder according to the present utility model includes an outer packaging bag and an inner packaging bag wrapped inside the outer packaging bag. The inner packaging bag is provided with an inner sealing strip and an outer sealing strip arranged outside the inner sealing strip with a gap therebetween. The inner sealing strip divides the inner cavity of the inner packaging bag into a storage cavity and a drying cavity. The storage cavity is surrounded by the inner sealing strip and the inner wall of the inner packaging bag for storing the dry powder. The drying cavity is surrounded by the inner sealing strip, the outer sealing strip and the inner wall of the inner packaging bag. An air-permeable packaging bag is arranged in the drying cavity, and a desiccant is encapsulated in the air-permeable packaging bag. The air-permeable packaging bag is arranged around the inner sealing strip, and the outside of the air-permeable packaging is fixed to the outer sealing strip, and the rest of the air-permeable packaging bag is not connected to the inner packaging bag; a strip-shaped component one arranged around the inner sealing strip is adhered to the outer wall of the inner packaging bag where the drying cavity is located. The adhesive force between the strip-shaped component one and the inner packaging bag is greater than the tearing strength of the inner packaging bag. At least one end of the strip-shaped component one is not adhered to the outer wall of the inner packaging bag, forming a free end one.

[0007] Preferably, a tear opening is provided at the edge of the outer packaging bag, and the tear opening is serrated.

[0008] Preferably, both the outer packaging bag and the inner packaging bag are made of PA / PE material. PA has excellent mechanical properties and impact toughness, good chemical stability and gas barrier properties, but poor moisture barrier properties, while PE has good moisture barrier properties. After the two are compounded, the gas and moisture barrier effects are good.

[0009] Preferably, the water vapor transmission rate of the inner packaging bag and the outer packaging bag is less than 5.5 g / (m 2 ·24 h), and the oxygen transmission rate is less than 1500 cm 3 / (m 2 ·24 h·0.1 Mpa).

[0010] Preferably, a strip-shaped component two is adhered to the outer wall of the inner packaging bag where the storage cavity is located. The adhesive force between the strip-shaped component two and the inner packaging bag is greater than the tearing strength of the inner packaging bag. At least one end of the strip-shaped component two is not adhered to the outer wall of the inner packaging bag, forming a free end two.

[0011] Preferably, the air-permeable packaging bag is a non-woven fabric bag.

[0012] Preferably, the outer edge of the air-permeable packaging bag is clamped between the two inner walls of the inner packaging bag and jointly fits with the inner wall of the inner packaging bag to form the outer sealing strip.

[0013] Preferably, the desiccant is one of silica gel, calcium oxide, calcium carbonate, activated carbon and montmorillonite.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] 1. The breathable packaging bag with an in-built desiccant is fixed to the outer sealing strip. If the outer sealing strip is not tightly sealed, when air enters the drying cavity from the outer sealing strip, it will first pass through the breathable packaging bag, and the moisture therein will be absorbed, maintaining the dryness of the drying cavity for a certain period of time, thus ensuring that moisture is not easily introduced into the storage cavity.

[0016] 2. When in use, first open the outer packaging bag and take out the inner packaging bag. Pull the spare end together and apply force along the bonding route of the first strip-shaped component. The inner packaging bag is torn along the first strip-shaped component, and the outer sealing strip together with the breathable packaging bag is separated from the inner packaging bag, exposing the inner sealing strip. Then, open the storage cavity and the dry powder can be poured out. This avoids accidentally breaking the breathable packaging bag in the drying cavity when opening the storage cavity, causing the desiccant to leak and contaminate the dry powder.

[0017] 3. Applying force to pull the second spare end can more conveniently tear open the storage cavity, saving time and effort.

[0018] 4. The utility model avoids water vapor from penetrating into the inner packaging bag to make the dry powder absorb moisture, extends the shelf life of the dry powder, improves the safety of drug use, and is convenient and fast to use. Description of the Drawings

[0019] Figure 1 is a schematic structural view of the packaging bag of the utility model;

[0020] Figure 2 is a schematic cross-sectional structural view of the packaging bag of the utility model;

[0021] In the figure: 1. Outer packaging bag; 2. Inner packaging bag; 3. Inner sealing strip; 4. Outer sealing strip; 5. Storage cavity; 6. Drying cavity; 7. Breathable packaging bag; 8. Desiccant; 9. First strip-shaped component; 10. First spare end; 11. Tear opening; 12. Second strip-shaped component; 13. Second spare end. Detailed Embodiment

[0022] The following will clearly and completely describe the utility model in conjunction with the accompanying drawings.

[0023] Such as Figure 1 、 Figure 2As shown in the figure, the packaging bag for preventing caking of citric acid type hemodialysis concentrated dry powder of the present utility model includes an outer packaging bag 1 and an inner packaging bag 2 wrapped inside the outer packaging bag 1. An inner sealing strip 3 is provided on the inner packaging bag 2, and an outer sealing strip 4 is arranged around the outside of the inner sealing strip 3 with a gap left between the outer sealing strip 4 and the inner sealing strip 3. The inner sealing strip 3 divides the inner cavity of the inner packaging bag 2 into a storage cavity 5 and a drying cavity 6. The storage cavity 5 is surrounded by the inner sealing strip 3 and the inner wall of the inner packaging bag 2, and the drying cavity 6 is surrounded by the inner sealing strip 3, the outer sealing strip 4 and the inner wall of the inner packaging bag 2. A breathable packaging bag 7 made of non-woven fabric is provided in the drying cavity 6, and a silica gel desiccant 8 is encapsulated in the breathable packaging bag 7. The breathable packaging bag 7 is arranged around the inner sealing strip 3, and the outside of the breathable packaging bag 7 is fixed on the outer sealing strip 4, and the rest of the breathable packaging bag 7 is not connected to the inner packaging bag 2; A strip-shaped component one 9 arranged around the inner sealing strip 3 is adhered to the outer wall of the inner packaging bag 2 where the drying cavity 6 is located, and at least one end of the strip-shaped component one 9 is not adhered to the outer wall of the inner packaging bag 2, becoming a free end one 10.

[0024] As Figure 1 shown, a serrated tear opening 11 is provided at the edge of the outer packaging bag 1.

[0025] Both the outer packaging bag 1 and the inner packaging bag 2 are made of PA / PE material, and the water vapor transmission rate of the inner packaging bag 2 and the outer packaging bag 1 is less than 5.5g / (m 2 ·24h), and the oxygen transmission rate is less than 1500cm 3 / (m 2 ·24h·0.1Mpa).

[0026] As Figure 1 shown, a strip-shaped component two 12 is adhered to the outer wall of the inner packaging bag 2 where the storage cavity 5 is located, and at least one end of the strip-shaped component two 12 is not adhered to the outer wall of the inner packaging bag 2, forming a free end two 13.

[0027] As Figure 2 shown, the outer edge of the breathable packaging bag 7 is clamped between the two inner walls of the inner packaging bag 2 and jointly fits with the inner wall of the inner packaging bag 2 to form the outer sealing strip 4.

[0028] When the dry powder needs to be taken, tear open the outer packaging bag 1 along the tear opening 11 and take out the inner packaging bag 2. Hold the free end one 10 and apply force to open the drying cavity 6. Continue to apply force along the adhesion route of the strip-shaped component one 9 to tear the inner packaging bag 2 along the strip-shaped component one 9. The outer sealing strip 4 together with the breathable packaging bag 7 is separated from the inner packaging bag 2, exposing the inner sealing strip 3. Then hold the free end two 13 and apply force to open the storage cavity 5 along the strip-shaped component two 12, and the dry powder can be poured out for use.

Claims

1. A packaging bag for preventing citrate-type hemodialysis concentrated dry powder from agglomerating, comprising an outer packaging bag (1) and an inner packaging bag (2) wrapped inside the outer packaging bag (1), characterized in that: The inner packaging bag (2) is provided with an inner sealing strip (3) and an outer sealing strip (4) which is arranged around the outer side of the inner sealing strip (3) and has a space between the inner sealing strip (3); the inner sealing strip (3) divides the inner cavity of the inner packaging bag (2) into a storage cavity (5) and a drying cavity (6); the storage cavity (5) is surrounded by the inner sealing strip (3) and the inner wall of the inner packaging bag (2); the drying cavity (6) is surrounded by the inner sealing strip (3), the outer sealing strip (4) and the inner wall of the inner packaging bag (2); and a breathable packaging bag (7) is provided in the drying cavity (6). The air-permeable packaging bag (7) contains a desiccant (8), the air-permeable packaging bag (7) is arranged around the inner sealing strip (3), the outer side of the air-permeable packaging bag (7) is fixed to the outer sealing strip (4), and the rest of the air-permeable packaging bag (7) is not connected to the inner packaging bag (2); the outer wall of the inner packaging bag (2) where the drying chamber (6) is located is bonded with a strip-shaped component (9) arranged around the inner sealing strip (3), and at least one end of the strip-shaped component (9) is not bonded to the outer wall of the inner packaging bag (2), forming a free end (10).

2. The packaging bag for preventing agglomeration of citrate type hemodialysis concentrated dry powder according to claim 1, characterized in that: The edge of the outer packaging bag (1) is provided with a tearing notch (11).

3. The packaging bag for preventing agglomeration of citrate type hemodialysis concentrated dry powder according to claim 2, characterized in that: The tearing opening (11) is in a sawtooth shape.

4. The packaging bag for preventing citrate type hemodialysis concentrated dry powder from agglomerating according to claim 1, characterized in that: The outer packaging bag (1) and the inner packaging bag (2) are both made of PA / PE material.

5. The packaging bag for preventing citrate type hemodialysis concentrated dry powder from agglomerating according to claim 1, characterized in that: The outer wall of the inner packaging bag (2) where the storage cavity (5) is located is bonded with a second strip-shaped component (12), and at least one end of the second strip-shaped component (12) is not bonded to the outer wall of the inner packaging bag (2), forming a second free end (13).

6. The packaging bag for preventing citrate type hemodialysis concentrated dry powder from agglomerating according to claim 1, characterized in that: The breathable packaging bag (7) is a non-woven bag.

7. The packaging bag for preventing citrate type hemodialysis concentrated dry powder from agglomerating according to claim 1, characterized in that: The outer edge of the air-permeable packaging bag (7) is sandwiched between the inner walls of the inner packaging bag (2) on both sides, and is bonded together with the inner wall of the inner packaging bag (2) to form an outer sealing strip (4).

8. The packaging bag for preventing citrate type hemodialysis concentrated dry powder from agglomerating according to claim 1, characterized in that: The water vapor transmission rate of the inner packaging bag (2) and the outer packaging bag (1) is less than 5.5 g / (m 2 ·24h), oxygen permeability is less than 1500cm 3 / (m 2 ·24h·0.1Mpa).

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