A peritoneal dialysis solution high-density polyethylene bag filling port sealing leak-proof structure
By designing inclined leak-proof sheets and reinforced sleeve structures on the high-density polyethylene bags for peritoneal dialysis fluid, the problems of leakage and bacterial entry during the filling process were solved, achieving high sealing and antibacterial effects and improving the quality of the bags.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YICHANG FORWARD HIGH TECH
- Filing Date
- 2025-09-11
- Publication Date
- 2026-08-04
AI Technical Summary
Peritoneal dialysis fluid in high-density polyethylene bags is prone to leakage during filling and sealing, and bacteria can easily enter through the bag opening.
A sealing and leak-proof structure for the filling port of a high-density polyethylene bag for peritoneal dialysis fluid was designed. It includes a first leak-proof sheet and a second leak-proof sheet arranged at an angle to form a "V" shape. A filling baffle is provided on the inner side, and a reinforcing sleeve and a slot and block structure are provided on the outer wall. The surface is covered with a nano-silver antibacterial layer to improve sealing and protection.
It effectively prevents heat seal strip breakage, improves sealing effect, prevents leakage and has antibacterial properties, ensuring the safety and quality of the filling process.
Smart Images
Figure CN224589707U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of high-density polyethylene bags for peritoneal dialysis fluid, specifically a sealing and leak-proof structure for the filling port of a high-density polyethylene bag for peritoneal dialysis fluid. Background Technology
[0002] Peritoneal dialysis fluid high-density polyethylene (HDPE) bags are a medical packaging solution specifically designed for the storage and delivery of peritoneal dialysis fluid. These bags utilize the many excellent properties of HDPE material to ensure the safety and effectiveness of the dialysis fluid.
[0003] High-density polyethylene (HDPE) bags for peritoneal dialysis fluid need to be filled before sealing after production. The sealing is usually done using heat sealing technology, but the sealed area is prone to breakage, which can easily lead to leakage. At the same time, the bag opening needs to be opened during the filling process, which can also allow bacteria to enter. Improvements are needed. Utility Model Content
[0004] The purpose of this invention is to provide a leak-proof sealing structure for the filling port of a high-density polyethylene bag for peritoneal dialysis fluid, in order to solve the problem of easy leakage at the bag opening of the high-density polyethylene bag for peritoneal dialysis fluid mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a sealing and leak-proof structure for the filling port of a high-density polyethylene bag for peritoneal dialysis fluid, comprising a high-density polyethylene bag body, an opening at the top of the high-density polyethylene bag body, a heat-sealing strip on the opening, and a filling assembly on the inner wall of the opening of the high-density polyethylene bag body, the filling assembly being located at the lower end of the heat-sealing strip; The filling assembly includes a first leak-proof sheet and a second leak-proof sheet connected to the inner wall of the opening of the high-density polyethylene bag. Both the first and second leak-proof sheets are inclined and form a "V" shape. The first and second leak-proof sheets have notches on their inner sides, and a filling baffle is inclinedly arranged inside the notches.
[0006] Preferably, the outer wall of the heat-sealing strip is provided with a reinforcing component; The reinforcing component includes a reinforcing sleeve fitted over the outer wall of the heat seal strip.
[0007] Preferably, a set of slots and blocks are provided on both sides of the reinforcing sleeve, and the slots and blocks are located on the inner walls of the front and rear ends of the reinforcing sleeve, respectively.
[0008] Preferably, the slot and the block are matched, and the slot and the block form an engaging connection.
[0009] Preferably, the surfaces of the first leak-proof sheet, the second leak-proof sheet, and the filling baffle are all provided with an antibacterial layer, and the antibacterial layer is made of nano-silver antibacterial material.
[0010] Preferably, the filling baffles are provided with multiple baffles on the inner side of the notches of the first and second leak-proof sheets, and the filling baffles of the first and second leak-proof sheets are spliced together to form a "V" shaped structure.
[0011] Preferably, the opening of the high-density polyethylene bag is provided with an easy-tear line, which is located at the top of the filling assembly and corresponds to the position of the filling baffle.
[0012] Compared with the prior art, the beneficial effects of this utility model are: (1) This device not only ensures that the heat seal is not easily broken, but also improves the leak-proof effect of the opening of the high-density polyethylene bag, thus improving the quality of the high-density polyethylene bag.
[0013] (2) This device sets a filling component on the inner wall of the high-density polyethylene bag and sets the first and second leak-proof sheets at an angle. Before sealing, the first and second leak-proof sheets can intercept dust without affecting the filling process. At the same time, heating can heat the first and second leak-proof sheets to heat-melt them together during sealing, thereby improving the sealing effect of this device.
[0014] (3) This device sets a reinforcing sleeve on the outer wall of the heat seal strip. By pressing the two sides of the reinforcing sleeve, the reinforcing sleeve can press the high-density polyethylene bag tightly, and at the same time protect the outside of the heat seal strip, avoiding damage to the outside of the heat seal strip. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the sealing and leak-proof structure of the filling port of a high-density polyethylene bag for peritoneal dialysis fluid according to this utility model. Figure 2 This is a top view of the connection between the high-density polyethylene bag body and the filling assembly, which is a sealing and leak-proof structure for the filling port of a high-density polyethylene bag for peritoneal dialysis fluid according to this utility model. Figure 3 This is a top view of the reinforcing sleeve of the sealing and leak-proof structure for the filling port of a high-density polyethylene bag for peritoneal dialysis fluid according to this utility model. Figure 4 This is a side sectional view showing the connection between the first and second leak-proof sheets of the sealing and leak-proof structure for the filling port of a high-density polyethylene bag for peritoneal dialysis fluid according to this utility model.
[0016] In the diagram: 1. High-density polyethylene bag; 2. Heat seal strip; 3. Reinforcing component; 31. Reinforcing sleeve; 32. Card slot; 33. Card block; 4. Easy tear line; 5. Filling component; 51. First leak-proof sheet; 52. Filling baffle; 53. Antibacterial layer; 54. Second leak-proof sheet. Detailed Implementation
[0017] 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.
[0018] Please see Figure 1-4This utility model provides a technical solution: a sealing and leak-proof structure for the filling port of a high-density polyethylene bag for peritoneal dialysis fluid, comprising a high-density polyethylene bag body 1, an opening at the top of the high-density polyethylene bag body 1, and an easy-tear line 4 provided on the opening of the high-density polyethylene bag body 1. The easy-tear line 4 is located at the top of the filling assembly 5, and corresponds to the position of the filling baffle 52. The easy-tear line 4 of this structure facilitates the opening of the high-density polyethylene bag body 1, making it convenient for later use. The easy-tear line 4 can be processed using laser cutting equipment. The tear-off line 4 is a relatively mature technology, so it will not be described in detail here. A heat-sealing strip 2 is provided at the opening, and a reinforcing component 3 is provided on the outer wall of the heat-sealing strip 2. The reinforcing component 3 includes a reinforcing sleeve 31 fitted onto the outer wall of the heat-sealing strip 2. This structure of the heat-sealing strip 2 is formed using a heat-sealing machine, which can seal the high-density polyethylene bag 1. A set of slots 32 and blocks 33 are provided on both sides of the reinforcing sleeve 31, located on the inner walls of the front and rear ends of the reinforcing sleeve 31, respectively. This structure reinforces… The sleeve 31 can shield and protect the heat-sealing strip 2, effectively preventing external damage to the heat-sealing strip 2. The slot 32 and the block 33 are structurally matched and form an interlocking connection. This structure can press the slot 32 and the block 33 to apply pressure to the surface of the heat-sealing strip 2, making it adhere to the surface of the heat-sealing strip 2. The inner wall of the opening of the high-density polyethylene bag 1 is provided with a filling component 5, which is located at the lower end of the heat-sealing strip 2. The filling component 5 includes components that are connected to the opening of the high-density polyethylene bag 1. The first leak-proof sheet 51 and the second leak-proof sheet 54 are connected to the inner wall of the filling port. The surfaces of the first leak-proof sheet 51, the second leak-proof sheet 54 and the filling baffle 52 are all provided with an antibacterial layer 53. The antibacterial layer 53 is made of nano-silver antibacterial material. This structure effectively prevents the entry of some microorganisms by setting the antibacterial layer 53. The first leak-proof sheet 51, the second leak-proof sheet 54 and the filling baffle 52 are all plastic sheets. The thickness of the first leak-proof sheet 51 and the second leak-proof sheet 54 does not exceed 0.5 mm, and the thickness of the filling baffle 52 does not exceed 0 mm.2mm thick, by controlling the thickness of the first leak-proof sheet 51, the second leak-proof sheet 54, and the filling baffle 52, the heat-sealing effect of the first leak-proof sheet 51, the second leak-proof sheet 54, and the filling baffle 52 is ensured. Multiple filling baffles 52 are provided on the inner side of the notches of the first leak-proof sheet 51 and the second leak-proof sheet 54. The filling baffles 52 of the first leak-proof sheet 51 and the second leak-proof sheet 54 are spliced together to form a "V" shape structure. This structure, through the inclined arrangement of the first leak-proof sheet 51 and the second leak-proof sheet 54, can intercept external dust. Simultaneously, the first leak-proof sheet 51 and the second leak-proof sheet 54... A filling baffle 52 is provided on the inner side, which matches the size of the filling nozzle, facilitating insertion and direct filling. Both the first leak-proof sheet 51 and the second leak-proof sheet 54 are inclined, forming a "V" shape. Notches are provided on the inner sides of both sheets, and the filling baffle 52 is inclinedly positioned inside these notches. After production, the first leak-proof sheet 51, the second leak-proof sheet 54, and the filling baffle 52 are heat-fused to the inner wall of the high-density polyethylene bag 1. The filling baffle 52 is formed by cutting.
[0019] Working principle: When using the high-density polyethylene bag filling port sealing and leak-proof structure for peritoneal dialysis fluid, the filling port is first inserted from the top of the high-density polyethylene bag 1 into the filling baffle 52 between the first leak-proof sheet 51 and the second leak-proof sheet 54 during filling. Pressure pushes the filling baffle 52 open. After filling is completed, the filling port is reset, and the lower end of the filling baffle 52 closes automatically. Then, the high-density polyethylene bag 1 is heat-sealed using a sealing machine to form a heat-sealing strip 2. After processing the easy-tear line 4, the reinforcing sleeve 31 is put on the outer wall of the high-density polyethylene bag 1, so that the reinforcing sleeve 31 is located at the heat-sealing strip 2. Finally, the two sides of the reinforcing sleeve 31 are pressed, so that the grooves 32 and the blocks 33 on both sides of the reinforcing sleeve 31 engage to protect the heat-sealing strip 2. 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 leak-proof sealing structure for the filling port of a high-density polyethylene bag for peritoneal dialysis fluid, comprising a high-density polyethylene bag body (1), an opening at the top of the high-density polyethylene bag body (1), and a heat-sealing strip (2) provided on the opening, characterized in that: The high-density polyethylene bag (1) has a filling assembly (5) on the inner wall of the opening, and the filling assembly (5) is located at the lower end of the heat seal strip (2). The filling assembly (5) includes a first leak-proof sheet (51) and a second leak-proof sheet (54) connected to the inner wall of the opening of the high-density polyethylene bag (1). Both the first leak-proof sheet (51) and the second leak-proof sheet (54) are inclined and form a "V" shape. The first leak-proof sheet (51) and the second leak-proof sheet (54) have notches on their inner sides, and a filling baffle (52) is inclinedly arranged inside the notch.
2. The peritoneal dialysis solution high-density polyethylene bag filling port seal leak-proof structure according to claim 1, characterized in that: The heat-sealing strip (2) has a reinforcing component (3) on its outer wall; The reinforcing component (3) includes a reinforcing sleeve (31) fitted onto the outer wall of the heat seal strip (2).
3. The peritoneal dialysis solution high-density polyethylene bag filling port seal leak-proof structure according to claim 2, characterized in that: The reinforcing sleeve (31) has a set of slots (32) and blocks (33) on both sides, and the slots (32) and blocks (33) are located on the inner walls of the front and rear ends of the reinforcing sleeve (31).
4. The peritoneal dialysis solution high-density polyethylene bag filling port seal leak-proof structure according to claim 3, characterized in that: The slot (32) and the block (33) are structurally matched, and the slot (32) and the block (33) form an engaging connection.
5. The peritoneal dialysis solution high-density polyethylene bag filling port seal leak-proof structure according to claim 1, characterized in that: The first leak-proof sheet (51), the second leak-proof sheet (54) and the filling baffle (52) are all provided with an antibacterial layer (53), and the antibacterial layer (53) is made of nano-silver antibacterial layer.
6. The peritoneal dialysis solution high-density polyethylene bag filling port seal leak-proof structure according to claim 1, characterized in that: The filling baffle (52) is provided with multiple baffles on the inner side of the notch of the first leak-proof sheet (51) and the second leak-proof sheet (54). The filling baffles (52) of the first leak-proof sheet (51) and the second leak-proof sheet (54) are spliced together to form a "V" shaped structure.
7. The peritoneal dialysis solution high-density polyethylene bag filling port seal leak-proof structure according to claim 1, characterized in that: The high-density polyethylene bag (1) has an easy-tear line (4) on its opening. The easy-tear line (4) is located at the top of the filling assembly (5) and corresponds to the position of the filling baffle (52).