A side sealing reinforcing structure of a peritoneal dialysis solution high-density polyethylene bag

Abstract

The utility model relates to medical packaging material technical field, concretely to a peritoneal dialysis liquid high density polyethylene bag side edge sealing reinforcing structure, including HDPE bag body, the side edge sealing area of HDPE bag body is equipped with main heat seal line, the both sides of the along line position of main heat seal line are provided with a plurality of parallel support rib respectively, and still be equipped with auxiliary support band between support rib, and the outside of side edge sealing area of HDPE bag body is equipped with elastic buffer layer, support rib, auxiliary support band and elastic buffer layer jointly form the comprehensive enhancement sealing structure of HDPE bag body side edge area.

Description

Technical Field

[0001] This utility model relates to the field of medical packaging materials technology, specifically a side-sealing reinforcement structure for a high-density polyethylene bag for peritoneal dialysis fluid. Background Technology

[0002] Traditional peritoneal dialysis fluid packaging typically uses bags made of high-density polyethylene (HDPE), a material favored for its excellent physical properties, chemical stability, and biocompatibility. However, with increasing clinical needs and technological advancements, the requirements for HDPE bags are constantly rising.

[0003] While existing HDPE bags offer numerous advantages, practical use has revealed that their side sealing areas are prone to structural failure, especially during handling and storage when subjected to external pressure or impact. This can lead to seal failure, potentially causing liquid leakage or contamination. Existing solutions typically improve seal strength by increasing the seal width or altering the sealing process, but this often increases production costs and does not fundamentally address the issue of seal fragility. Furthermore, these improvements can sometimes reduce the overall flexibility and tearability of the packaging, causing inconvenience to users. Utility Model Content

[0004] The purpose of this invention is to provide a reinforced side sealing structure for high-density polyethylene (HDPE) bags used for peritoneal dialysis fluid, in order to solve the problem mentioned in the background art that the side sealing area of ​​HDPE bags is prone to failure, and that the seal may be damaged due to external pressure or impact during handling and storage, thereby causing liquid leakage or contamination risks.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a side sealing reinforcement structure for a high-density polyethylene (HDPE) bag for peritoneal dialysis fluid, comprising an HDPE bag body, wherein a main heat-sealing line is provided in the side sealing area of ​​the HDPE bag body, and multiple parallel support ribs are respectively provided on both sides of the main heat-sealing line, and an auxiliary support strip is provided between the support ribs, and an elastic buffer layer is provided on the outside of the side sealing area of ​​the HDPE bag body, wherein the support ribs, the auxiliary support strip and the elastic buffer layer together form a comprehensive reinforced sealing structure for the side area of ​​the HDPE bag body.

[0006] Preferably, the width of the support rib is 0.5mm to 1.5mm and the thickness is 0.2mm to 0.5mm, and the support rib is made of high-density polyethylene material and fixed to the HDPE bag body by hot-melt process.

[0007] Preferably, the width of the auxiliary support strip is 2mm to 4mm, its length covers the entire side sealing area, and the surface of the auxiliary support strip is provided with fine texture.

[0008] Preferably, the thickness of the elastic buffer layer is 0.3 mm to 0.8 mm, and the elastic buffer layer is bonded and fixed to the HDPE bag body by an adhesive.

[0009] Preferably, the main heat-sealing line is provided with reinforcing strips on both sides. The width of the reinforcing strips is 1mm to 2mm, the material is polyester fiber, and they are fixed to the HDPE bag body by ultrasonic welding.

[0010] Preferably, the surface of the reinforcing strip is provided with an anti-slip strip, the anti-slip strip is 1mm to 2mm wide, the material is a thin silicone rubber layer with a thickness of 0.1mm to 0.3mm, and it is fixed to the reinforcing strip with an environmentally friendly adhesive, and the surface of the anti-slip strip is provided with raised patterns.

[0011] Compared with existing technologies, the beneficial effects of this invention are as follows: The side-sealing reinforcement structure of the high-density polyethylene bag for peritoneal dialysis fluid improves sealing strength and tear resistance while maintaining the overall flexibility and tearability of the packaging, thus enhancing ease of use and safety. The structure, through the design of supporting ribs, effectively disperses external pressure or impact, preventing tearing caused by localized stress concentration. The auxiliary support strip design provides a deformation-resistant support layer, enhancing the stability and durability of the sealed area. The elastic buffer layer, with its soft and highly elastic properties, absorbs and buffers some energy during external impacts, reducing direct damage to the sealed area. These structures work together to ensure the integrity and reliability of the entire side-sealed area during handling and storage. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the side sealing reinforcement structure of a high-density polyethylene bag for peritoneal dialysis fluid according to the present invention; Figure 2 This is a schematic diagram of the external structure of the reinforcing strip of the side sealing reinforcement structure of a high-density polyethylene bag for peritoneal dialysis fluid according to this utility model; Figure 3 This is a side view diagram of the connection between the elastic buffer layer and the HDPE bag body of the side sealing reinforcement structure of the peritoneal dialysis fluid high-density polyethylene bag according to this utility model.

[0013] In the diagram: 1. HDPE bag body; 2. Main heat seal line; 3. Support ribs; 4. Auxiliary support strips; 5. Elastic buffer layer; 6. Reinforcing strips; 7. Anti-slip strips. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-3This utility model provides a technical solution: a side-sealing reinforcement structure for a high-density polyethylene (HDPE) bag for peritoneal dialysis fluid, comprising an HDPE bag body 1. The side-sealing area of ​​the HDPE bag body 1 has a main heat-sealing line 2. Multiple parallel support ribs 3 are respectively arranged on both sides of the main heat-sealing line 2. The angle between the support ribs 3 and the main heat-sealing line 2 is 10° to 45°. An auxiliary support band 4 is also provided between the support ribs 3. The auxiliary support band 4 is made of high-strength fiber material and is fixed to the HDPE bag body 1 by heat pressing. An elastic buffer layer 5 is provided on the outer side of the side-sealing area of ​​the HDPE bag body 1. The support ribs 3, auxiliary support band 4, and elastic buffer layer 5 together form a comprehensive reinforced sealing structure for the side area of ​​the HDPE bag body 1. When the HDPE bag body 1 is subjected to external pressure or impact, the multiple support ribs 3 can effectively disperse stress and prevent tearing caused by local stress concentration. Simultaneously, due to the angle design of the support ribs with respect to the main heat-sealing line 2, the overall stability of the HDPE bag body 1 under stress is further enhanced. The auxiliary support band 4, through... Its high-strength fiber material provides a robust support layer in the sealed area, ensuring the stability and durability of the overall structure. Even when subjected to significant impact during handling, it effectively prevents damage to the sealed area. Meanwhile, the elastic buffer layer 5, with its soft and highly elastic properties, absorbs and buffers some energy during external impacts, reducing direct damage to the sealed area and ensuring the integrity and reliability of the entire side-sealed area during handling and storage. Overall, this structure not only significantly improves the sealing strength and tear resistance of the HDPE bag body 1, effectively preventing seal breakage and liquid leakage risks caused by external pressure or impact, but also maintains the overall flexibility and tearability of the packaging, improving ease of use and safety. This solves the problem of the side-sealed area of ​​HDPE bags easily becoming a failure point in existing technologies, overcoming the disadvantages of increased costs and inconvenience caused by increasing the sealing width or changing the sealing process in traditional solutions. The width of the support ribs 3 is 0.5mm to 1.5mm, and the thickness is 0.2mm to 0.The support rib 3, made of high-density polyethylene and fixed to the HDPE bag body 1 by hot-melt process, is 5mm wide. The surface of the support rib 3 has micro-grooves to increase friction and prevent slippage during use. This structure effectively disperses stress when the HDPE bag body 1 is subjected to external pressure or impact. The micro-grooves increase friction with the HDPE bag body 1, ensuring the support rib 3 does not slip under stress, thus maintaining its reinforcing effect on the sealing area. This ensures the excellent performance of the HDPE bag body 1 in practical applications, significantly improving its tear resistance and sealing strength. The auxiliary support strip 4 is 2mm to 4mm wide and its length covers the entire side sealing area. The surface of the auxiliary support strip 4 has a fine texture. This structure, utilizing the properties of its high-strength fiber material, provides a robust core in the sealing area, enhancing the overall structural stability and durability. Its width and length design ensures uniform and strong support throughout the entire side sealing area, preventing localized weak points. The fine texture increases friction, preventing the auxiliary support strip 4 from slipping under stress and ensuring it remains in the optimal support position. The elastic buffer layer 5 has a thickness of 0.3mm to 0.8mm and is made of highly elastic silicone rubber. The elastic buffer layer 5 is bonded to the HDPE bag body 1 with adhesive. The elastic buffer layer 5 contains an internal bubble structure, which provides elastic cushioning. Layer 5 deforms to absorb and disperse external forces through its high elasticity. Simultaneously, its internal bubble structure further enhances its cushioning performance, allowing it to quickly return to its original shape after being compressed. This effectively reduces the impact of external shocks on the sealing area. In this way, the elastic buffer layer 5, together with the auxiliary support strip 4 and support ribs 3, enhances the sealing strength while providing additional flexible protection to prevent seal damage due to hard impacts. The bubble structure inside the elastic buffer layer 5 refers to the presence of tiny closed or open pores in the material. These bubbles can be evenly distributed throughout the material to provide optimal cushioning. Reinforcing strips 6, 1mm to 2mm wide, are provided on both sides of the main heat-sealing line 2 and are made of polyester fiber, welded using ultrasonic welding. Fixed to the HDPE bag body 1, the reinforcing strap 6 has a wear-resistant coating on its surface. When the HDPE bag body 1 is subjected to external force pulling or friction, the reinforcing strap 6 provides local reinforcement support to the main heat-sealing line 2 area through the high strength characteristics of its polyester fiber material, preventing the heat-sealing line from cracking or tearing due to concentrated force. Its width ensures effective reinforcement without increasing the volume excessively, while avoiding affecting the overall flexibility and tearability of the bag. At the same time, the wear-resistant coating on the surface further improves the wear resistance of the reinforcing strap 6 when in contact with the outside world, reducing structural damage caused by friction during handling and transportation. The surface of the reinforcing strap 6 is provided with anti-slip strips 7, which are 1mm to 2mm wide and 0.1mm to 0.A 3mm thin silicone rubber layer is fixed to the reinforcing strip 6 with an environmentally friendly adhesive. The anti-slip strip 7 has a raised pattern on its surface. This structure significantly increases friction between the anti-slip strip 7 and fingers or external devices, effectively preventing slippage and improving operational stability and safety. Furthermore, this thin silicone rubber material provides excellent anti-slip performance while maintaining superior flexibility and fit, without affecting the bag's overall bending and folding performance. This further enhances the controllability of the external contact surface while strengthening the structural strength of the main heat-sealing line 2 area, preventing misoperation or packaging damage caused by slippage. This improves the bag's ease of handling during transportation, storage, and clinical use.

[0016] Working principle: When using the side-sealing reinforcement structure of the high-density polyethylene (HDPE) bag for peritoneal dialysis fluid, the HDPE bag body 1 is first heat-sealed, forming a main heat-sealing line 2 in its side-sealing area. Then, multiple support ribs 3 are fixed along both sides of the main heat-sealing line 2 using a heat-melting process. The support ribs 3 are arranged in parallel and form an angle of 10° to 45° with the main heat-sealing line 2. Next, auxiliary support strips 4 are installed between the support ribs 3 using a heat-pressing method. The auxiliary support strips 4 cover the entire side-sealing area and fit tightly against it. Then, the HDPE bag body 1 is heat-sealed, forming a main heat-sealing line 2 in its side-sealing area. An elastic buffer layer 5 is bonded to the outside of the PE bag body 1 with an adhesive. The elastic buffer layer 5 has an internal bubble structure and completely covers the sealed area. Then, a reinforcing strip 6 is fixed on both sides of the main heat-sealing line 2 by ultrasonic welding. The surface of the reinforcing strip 6 is coated with a wear-resistant coating to enhance its surface performance. Finally, an anti-slip strip 7 is bonded to the outside of the reinforcing strip 6 with an environmentally friendly adhesive. The anti-slip strip 7 is a thin silicone rubber layer with a thickness of 0.1mm to 0.3mm and has raised patterns on its surface, thus completing a series of steps.

[0017] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A side-sealing reinforcement structure for a high-density polyethylene bag for peritoneal dialysis fluid, comprising an HDPE bag body (1), characterized in that: The side sealing area of ​​the HDPE bag body (1) is provided with a main heat seal line (2). Multiple parallel support ribs (3) are provided on both sides of the main heat seal line (2). An auxiliary support strip (4) is also provided between the support ribs (3). An elastic buffer layer (5) is provided on the outside of the side sealing area of ​​the HDPE bag body (1). The support ribs (3), auxiliary support strip (4) and elastic buffer layer (5) together form a comprehensive reinforced sealing structure for the side area of ​​the HDPE bag body (1).

2. The side-sealing reinforcement structure of a high-density polyethylene bag for peritoneal dialysis fluid according to claim 1, characterized in that: The width of the support rib (3) is 0.5 mm to 1.5 mm and the thickness is 0.2 mm to 0.5 mm. The support rib (3) is made of high-density polyethylene material and is fixed to the HDPE bag body (1) by hot melt process.

3. The side-sealing reinforcement structure of a high-density polyethylene bag for peritoneal dialysis fluid according to claim 1, characterized in that: The width of the auxiliary support strip (4) is 2mm to 4mm, its length covers the entire side sealing area, and the surface of the auxiliary support strip (4) is provided with fine texture.

4. The side sealing reinforcement structure of a high-density polyethylene bag for peritoneal dialysis fluid according to claim 1, characterized in that: The thickness of the elastic buffer layer (5) is 0.3 mm to 0.8 mm, and the elastic buffer layer (5) is bonded and fixed to the HDPE bag body (1) by an adhesive.

5. The side sealing reinforcement structure of a high-density polyethylene bag for peritoneal dialysis fluid according to claim 1, characterized in that: The main heat-sealing line (2) is provided with reinforcing strips (6) on both sides. The width of the reinforcing strips (6) is 1mm to 2mm. The material is polyester fiber and it is fixed to the HDPE bag body (1) by ultrasonic welding.

6. The side sealing reinforcement structure of a high-density polyethylene bag for peritoneal dialysis fluid according to claim 5, characterized in that: The surface of the reinforcing strip (6) is provided with anti-slip strips (7), the width of the anti-slip strips (7) is 1mm to 2mm, the material is a thin silicone rubber layer with a thickness of 0.1mm to 0.3mm, and it is fixed to the reinforcing strip (6) by environmentally friendly adhesive, and the surface of the anti-slip strips (7) is provided with raised patterns.

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