Degradable high-absorption composite medical cotton paper

Abstract

The utility model relates to a kind of degradable high liquid-absorbing composite medical cotton paper, and the skin-friendly non-woven fabric layer is soft porous structure;High liquid-absorbing fiber core layer is arranged below skin-friendly non-woven fabric layer;Antibacterial isolation layer is arranged below high liquid-absorbing fiber core layer;Degradable plastic film barrier layer is arranged below antibacterial isolation layer;Micro-sized air-permeable hole allowing liquid to pass in one direction is densely distributed on degradable plastic film;Bottom fabric layer is arranged below degradable plastic film barrier layer;Overall structure is made of degradable material, skin-friendly non-woven fabric layer, high liquid-absorbing fiber core layer, antibacterial isolation layer, degradable plastic film barrier layer and bottom fabric layer are compounded by environmental protection process, realize completely environment-friendly after use;It can effectively prevent liquid penetration to contaminate clothes, block back infiltration and inhibit bacteria, ensure dry and clean when using.

Description

Technical Field

[0001] This utility model relates to the field of medical materials technology, specifically to a biodegradable, highly absorbent composite medical cotton paper. Background Technology

[0002] Existing medical absorbent paper has limited absorbency and is mostly made of non-degradable materials, which can easily cause environmental pollution after use. Although some highly absorbent materials have excellent absorbency, they have poor structural strength, are easily deformed, and are prone to bacterial growth in humid environments, making it difficult to meet the comprehensive requirements of the medical field for safety, functionality, and environmental protection. Therefore, a biodegradable highly absorbent composite medical absorbent paper is proposed. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a biodegradable, highly absorbent composite medical cotton paper. The overall structure is made of biodegradable materials, and the skin-friendly non-woven fabric layer, highly absorbent fiber core layer, antibacterial isolation layer, biodegradable plastic film barrier layer, and bottom fabric layer are composited using environmentally friendly processes, achieving complete environmental friendliness after use. It can effectively prevent liquid penetration and staining of clothing, block backflow and inhibit bacteria, and ensure dryness and hygiene during use.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: It comprises:

[0005] The skin-friendly non-woven fabric layer has a soft and porous structure.

[0006] A highly absorbent fiber core layer is provided below the skin-friendly nonwoven fabric layer;

[0007] An antibacterial isolation layer is provided below the superabsorbent fiber core layer;

[0008] A biodegradable plastic film barrier layer is provided below the antibacterial isolation layer; the biodegradable plastic film is densely covered with micro-ventilation pores that allow liquid to pass through in one direction.

[0009] The bottom fabric layer is located below the biodegradable plastic film barrier layer; the skin-friendly non-woven fabric layer is bonded to the bottom fabric layer, and the highly absorbent fiber core layer, antibacterial isolation layer, and biodegradable plastic film barrier layer are all pressed tightly between the skin-friendly non-woven fabric layer and the bottom fabric layer from top to bottom.

[0010] Preferably, the micro-ventilation pores are in the shape of an inverted funnel, with a pore diameter of 0.1-0.3 mm on the side near the superabsorbent fiber core layer and 0.01-0.05 mm on the side near the bottom fabric layer.

[0011] Preferably, the skin-friendly nonwoven fabric layer and the super absorbent fiber core layer are bonded together in a dot-matrix manner using a biodegradable starch-based hot melt adhesive.

[0012] Preferably, the edge lock strip is attached to the edges of the skin-friendly non-woven fabric layer and the bottom fabric layer; the edge lock strip is filled with absorbent cotton, which is a water-repellent biodegradable polylactic acid and cotton blend knitted fabric; a first release paper layer is provided on both the front and back sides of the edge lock strip, a pressure-sensitive adhesive layer is provided at the bottom of the first release paper layer, and a second release paper layer is provided at the bottom of the pressure-sensitive adhesive layer.

[0013] Preferably, the skin-friendly nonwoven fabric layer is a soft, porous structure made of biodegradable pure cotton fibers through a hydroentanglement method; the super absorbent fiber core layer is made of natural wood pulp fibers mixed with super absorbent resin particles and biodegradable polyvinyl alcohol fibers; the super absorbent resin particles are sodium polyacrylate coated with hydrophobically modified starch, and their particle size is distributed between 50-200 micrometers; the biodegradable plastic film barrier layer is a polylactic acid film; and the bottom fabric layer is a water-repellent biodegradable polylactic acid and cotton blend knitted fabric.

[0014] Preferably, the antibacterial isolation layer is a ramie fiber mesh impregnated with nano-silver ion antibacterial agent, and the warp and weft density of the ramie fiber mesh of the antibacterial isolation layer is 20-30 threads / inch.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. The overall structure is made of biodegradable materials. The skin-friendly non-woven fabric layer, the highly absorbent fiber core layer, the antibacterial isolation layer, the biodegradable plastic film barrier layer and the bottom fabric layer are composited through environmentally friendly processes, making it completely environmentally friendly after use.

[0017] 2. It can effectively prevent liquid from seeping into and staining clothes, block backflow and inhibit bacteria, and ensure dryness and hygiene during use. Attached Figure Description

[0018] Figure 1 This is the southwest isometric view of this utility model.

[0019] Figure 2 This is an exploded view of the present invention.

[0020] Figure 3 yes Figure 2 Enlarged view of part A in the image.

[0021] Figure 4 This is a cross-sectional view of the seam strip in this utility model.

[0022] Figure 5 yes Figure 4 Enlarged view of part B in the image.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Skin-friendly non-woven fabric layer; 2. High absorbency fiber core layer; 3. Starch-based hot melt adhesive; 4. Antibacterial isolation layer; 5. Biodegradable plastic film barrier layer; 6. Micro-ventilation pores; 7. Bottom fabric layer; 8. Overlock strip; 9. Absorbent cotton; 10. Release paper layer 11. Pressure-sensitive adhesive layer; 12. Release paper layer 2. Detailed Implementation

[0025] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] The specific implementation method adopts the following technical solution:

[0027] Example 1: Please refer to Figure 1-5 This embodiment 1 includes:

[0028] Skin-friendly non-woven fabric layer 1, wherein the skin-friendly non-woven fabric layer 1 has a soft and porous structure;

[0029] A highly absorbent fiber core layer 2 is disposed below the skin-friendly nonwoven fabric layer 1; the skin-friendly nonwoven fabric layer 1 and the highly absorbent fiber core layer 2 are bonded together in a dot-matrix manner by a biodegradable starch-based hot melt adhesive 3.

[0030] Antibacterial isolation layer 4, wherein the antibacterial isolation layer 4 is disposed below the super absorbent fiber core layer 2;

[0031] A biodegradable plastic film barrier layer 5 is disposed below the antibacterial isolation layer 4; the biodegradable plastic film is densely covered with micro-ventilation holes 6 that allow liquid to pass through in one direction; the micro-ventilation holes 6 are inverted funnel shape, and their pore diameter is 0.1-0.3 mm on the side near the super absorbent fiber core layer 2 and 0.01-0.05 mm on the side near the bottom fabric layer 7;

[0032] The bottom fabric layer 7 is located below the biodegradable plastic film barrier layer 5; the skin-friendly non-woven fabric layer 1 is attached to the bottom fabric layer 7, and the highly absorbent fiber core layer 2, the antibacterial isolation layer 4, and the biodegradable plastic film barrier layer 5 are all pressed from top to bottom between the skin-friendly non-woven fabric layer 1 and the bottom fabric layer 7.

[0033] The edge lock strip 8 is attached to the edges of the skin-friendly non-woven fabric layer 1 and the bottom fabric layer 7; the edge lock strip 8 is filled with absorbent cotton 9, which is a water-repellent biodegradable polylactic acid (PLA) and cotton blend knitted fabric; the front and back sides of the edge lock strip 8 are provided with a first release paper layer 10, the bottom of the first release paper layer 10 is provided with a pressure-sensitive adhesive layer 11, and the bottom of the pressure-sensitive adhesive layer 11 is provided with a second release paper layer 12.

[0034] Example 2: Please refer to Figure 1-5 Based on Example 1, the skin-friendly nonwoven fabric layer 1 is a soft and porous structure made of biodegradable pure cotton fibers through a hydroentanglement method. The super absorbent fiber core layer 2 is made of natural wood pulp fibers mixed with superabsorbent polymer (SAP) particles and biodegradable polyvinyl alcohol (PVA) fibers. The superabsorbent polymer (SAP) particles are sodium polyacrylate coated with hydrophobically modified starch, and their particle size is distributed between 50-200 micrometers. The antibacterial barrier layer 4 is a ramie fiber mesh impregnated with nano silver ion antibacterial agent. The warp and weft density of the ramie fiber mesh in the antibacterial barrier layer 4 is 20-30 threads / inch. The biodegradable plastic film barrier layer 5 is a polylactic acid (PLA) film. The bottom fabric layer 7 is a water-repellent biodegradable polylactic acid (PLA) and cotton blend knitted fabric.

[0035] When using this utility model, the skin-friendly non-woven fabric layer 1 and the bottom fabric layer 7 are bonded together. The super absorbent fiber core layer 2, the antibacterial isolation layer 4, and the biodegradable plastic film barrier layer 5 are all pressed tightly between the skin-friendly non-woven fabric layer 1 and the bottom fabric layer 7 from top to bottom, so that the skin-friendly non-woven fabric layer 1, the super absorbent fiber core layer 2, the antibacterial isolation layer 4, the biodegradable plastic film barrier layer 5 and the bottom fabric layer 7 are pressed tightly together, which is convenient for use.

[0036] The top layer of this composite medical cotton paper is a skin-friendly non-woven fabric layer 1, made of soft, biodegradable fibers. It directly contacts the skin, providing a comfortable feel and quickly guiding liquid absorption. Below this is a highly absorbent fiber core layer 2, the core of its absorbency. Natural wood pulp fibers provide excellent capillary action, while the hydrophobic starch-coated SAP particles remain dispersed before contact with water. Upon contact with water, the starch layer dissolves, and the SAP particles rapidly expand to lock in moisture. PVA fibers enhance the structural strength in this wet state, preventing overall loosening after gelation. The antibacterial isolation layer 4, made of ramie mesh, not only provides structural support but also incorporates impregnated nanofibers. Silver ions effectively inhibit bacterial growth; the biodegradable plastic film barrier layer 5 is a key functional barrier layer. The PLA film itself is biodegradable, and its micro-ventilation holes 6 are designed in an inverted funnel shape, allowing liquids and gases to pass unidirectionally from the skin-friendly layer to the bottom layer, effectively preventing liquid backflow and keeping the skin dry; the bottom fabric layer is water-repellent to prevent liquid penetration and staining of clothing, and its PLA and cotton blend material ensures overall biodegradability; the layers are bonded together using an environmentally friendly hydroentanglement process or biodegradable adhesives (such as starch-based hot melt adhesive 3) to ensure a strong structure and overall environmental friendliness;

[0037] When using, lay the composite medical cotton paper flat, with the skin-friendly non-woven fabric layer 1 in contact with the person and the bottom fabric layer 7 at the bottom. Peel off the second release paper 12 below and stick the pressure-sensitive adhesive layer 11 in the appropriate position to prevent the composite medical cotton paper from shifting during use.

[0038] Compared with the prior art, the beneficial effects of this utility model are:

[0039] 1. The overall structure is made of biodegradable materials. The skin-friendly non-woven fabric layer 1, the highly absorbent fiber core layer 2, the antibacterial isolation layer 4, the biodegradable plastic film barrier layer 5, and the bottom fabric layer 7 are compounded through environmentally friendly processes to achieve complete environmental friendliness after use.

[0040] 2. The super absorbent fiber core layer 2 combines natural wood pulp fiber and modified SAP particles, which has efficient liquid conduction and water retention capabilities, and maintains structural stability even in a wet state.

[0041] 3. The bottom fabric layer 7 is water-repellent and is fixed by pressure-sensitive adhesive layers 11 on both sides, which can effectively prevent liquid from penetrating and staining clothes, and ensure that the position is stable and does not shift during use through the adhesive.

[0042] 4. The biodegradable plastic film barrier layer 5 and the antibacterial isolation layer 4 work together to block backflow and inhibit bacteria through one-way breathable pores 6 and nano silver ions, thus ensuring dryness and hygiene during use.

[0043] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A biodegradable, highly absorbent composite medical cotton paper, characterized in that, It contains: The skin-friendly non-woven fabric layer (1) has a soft and porous structure. A highly absorbent fiber core layer (2) is disposed below the skin-friendly nonwoven fabric layer (1); An antibacterial isolation layer (4) is provided below the super absorbent fiber core layer (2); A biodegradable plastic film barrier layer (5) is provided below the antibacterial isolation layer (4); the biodegradable plastic film is densely covered with micro-ventilation holes (6) that allow liquid to pass through in one direction. The bottom fabric layer (7) is located below the biodegradable plastic film barrier layer (5); the skin-friendly non-woven fabric layer (1) is attached to the bottom fabric layer (7), and the super absorbent fiber core layer (2), antibacterial isolation layer (4), and biodegradable plastic film barrier layer (5) are all pressed from top to bottom between the skin-friendly non-woven fabric layer (1) and the bottom fabric layer (7).

2. The biodegradable, highly absorbent composite medical cotton paper according to claim 1, characterized in that: The micro-ventilation pores (6) are in the shape of an inverted funnel, with a pore diameter of 0.1-0.3 mm on the side near the super absorbent fiber core layer (2) and 0.01-0.05 mm on the side near the bottom fabric layer (7).

3. The biodegradable, highly absorbent composite medical cotton paper according to claim 1, characterized in that: A skin-friendly nonwoven fabric layer (1) and a highly absorbent fiber core layer (2) are bonded together in a dot-matrix manner using a biodegradable starch-based hot melt adhesive (3).

4. The biodegradable, highly absorbent composite medical cotton paper according to claim 1, characterized in that: The edge lock strip (8) is attached to the edges of the skin-friendly non-woven fabric layer (1) and the bottom fabric layer (7); the edge lock strip (8) is filled with absorbent cotton (9), which is a water-repellent biodegradable polylactic acid (PLA) and cotton blend knitted fabric; the front and back sides of the edge lock strip (8) are provided with a first release paper layer (10), the bottom of the first release paper layer (10) is provided with a pressure-sensitive adhesive layer (11), and the bottom of the pressure-sensitive adhesive layer (11) is provided with a second release paper layer (12).

5. The biodegradable, highly absorbent composite medical cotton paper according to claim 1, characterized in that: The skin-friendly nonwoven fabric layer (1) is a soft and porous structure made of biodegradable pure cotton fibers by hydroentanglement. The super absorbent fiber core layer (2) is made of natural wood pulp fibers mixed with super absorbent resin (SAP) particles and biodegradable polyvinyl alcohol (PVA) fibers. The super absorbent resin (SAP) particles are sodium polyacrylate coated with hydrophobic modified starch on the surface, and their particle size is distributed between 50-200 micrometers. The biodegradable plastic film barrier layer (5) is a polylactic acid (PLA) film. The bottom fabric layer (7) is a water-repellent biodegradable polylactic acid (PLA) and cotton blend knitted fabric.

6. The biodegradable, highly absorbent composite medical cotton paper according to claim 1, characterized in that: The antibacterial isolation layer (4) is a ramie fiber mesh impregnated with nano silver ion antibacterial agent, and the warp and weft density of the ramie fiber mesh of the antibacterial isolation layer (4) is 20-30 threads / inch.

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