Superabsorbent dressing

Abstract

The utility model provides a kind of superabsorbent dressing, it is related to dressing technical field, including absorption layer and outer covering, absorption layer includes non-woven fabric layer, adhesive layer, polyurethane foam layer and superabsorbent, non-woven fabric layer is connected with polyurethane foam layer using adhesive layer, superabsorbent is evenly dispersed and arranged between non-woven fabric layer and polyurethane foam layer;Outer covering is set outside absorption layer, and it at least includes hydrophilic layer.By setting outer covering and absorption layer, outer covering has multilayer structure, has the effect of hydrophilic, protection, absorption layer is set in the cavity in outer covering, absorption layer uses non-woven fabric, polyurethane foam and contains superabsorbent (SAP) material, so that dressing can ensure that dressing has uniform absorption of permeate on the basis of having high absorbency, water-locking, avoid dressing uneven expansion, enhance absorption efficiency and comfort degree;Avoid the problem of uneven expansion of absorption layer.

Description

Technical Field

[0001] This utility model relates to the field of dressing technology, and in particular to a superabsorbent dressing. Background Technology

[0002] In recent years, the global aging problem has become increasingly serious, and the incidence of diseases such as diabetes and obesity has continued to rise. The demand for chronic wound care such as bedsores and diabetic ulcers caused by the elderly is increasing, and the medical dressing market has great potential for growth.

[0003] Traditional dressings lack sufficient absorbency and retention capacity, failing to meet the needs of chronic wound care. Superabsorbent dressings largely overcome the shortcomings of traditional wound dressings, providing comprehensive wound protection and promoting healing. This has led to the increasingly widespread clinical application of superabsorbent dressings in chronic wound healing. Currently commonly used superabsorbent dressings...

[0004] When treating exudate from chronic wounds, the uniformity of exudate absorption is generally poor, and the dressing is prone to uneven expansion, which affects the subsequent absorption efficiency and comfort of the dressing. In order to address the above-mentioned defects, this application is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a superabsorbent dressing that utilizes non-woven fabric and an absorbent layer containing superabsorbent polymer (SAP) material. This allows the dressing to have high absorbency and water-locking properties while ensuring uniform absorption of the permeate, preventing uneven swelling, and enhancing absorption efficiency and comfort.

[0006] To address the aforementioned problems, this utility model provides a superabsorbent dressing, comprising an absorbent layer and an outer covering layer. The absorbent layer includes a nonwoven fabric layer, an adhesive layer, a polyurethane foam layer, and a superabsorbent resin. The nonwoven fabric layer and the polyurethane foam layer are connected by the adhesive layer, and the superabsorbent resin is uniformly dispersed between the nonwoven fabric layer and the polyurethane foam layer. The outer covering layer is disposed outside the absorbent layer and includes at least a hydrophilic layer.

[0007] By utilizing non-woven fabric and an absorbent layer containing superabsorbent polymer (SAP) material, the dressing not only possesses high absorbency and water-locking properties, but also ensures uniform absorption of the permeate, preventing uneven swelling and enhancing absorption efficiency and comfort.

[0008] According to one embodiment of the present invention, the outer coating layer includes a protective layer, a hydrophilic layer, a hydrophilic layer and a protective layer arranged sequentially, with a cavity formed between the two hydrophilic layers, and the absorbent layer disposed in the cavity.

[0009] According to one embodiment of the present invention, the outer coating layer includes a backing layer and two hydrophilic layers arranged sequentially, with a cavity formed between the backing layer and the hydrophilic layers, and the absorbent layer disposed in the cavity.

[0010] According to one embodiment of the present invention, the polyurethane foam layer is provided with a plurality of recesses, and the superabsorbent resin is disposed in the recesses.

[0011] According to one embodiment of the present invention, the superabsorbent resin is distributed in a dotted or striped pattern.

[0012] According to one embodiment of the present invention, the peripheral edge portions of each layer in the outer covering are connected as one unit.

[0013] Alternatively, the edges of each layer in the outer covering can be fused together by means of yarn sewing, ultrasonic welding, adhesive bonding, or high-temperature hot pressing.

[0014] According to one embodiment of the present invention, the basis weight of the absorbent layer is 200~800 g / m³. 2 The thickness of the nonwoven fabric layer is 0.5~3mm, and the thickness of the polyurethane foam layer is 2~4mm.

[0015] According to one embodiment of the present invention, the nonwoven layer is made of hydrophilic cotton nonwoven fabric.

[0016] According to one embodiment of this utility model, the hydrophilic layer is made of hydrophilic nonwoven fabric, which has the characteristics of high air permeability, high hydrophilicity, softness, light weight, and low price. The basis weight of the hydrophilic nonwoven fabric is 10~20 g / m². 2 It should be noted that there are no restrictions on the materials used; any material that is breathable and hydrophilic can be used in this patent.

[0017] According to one embodiment of this utility model, the protective layer is made of thermally rolled nonwoven fabric, which has good air permeability, flexibility, and water permeability. The basis weight of the thermally rolled nonwoven fabric is 20~30 g / m². 2 It should be noted that the protective layer material is not limited; any material that is breathable and water-permeable can be used in this patent.

[0018] According to one embodiment of this utility model, the backing layer is made of SMS nonwoven fabric, which has high breathability and waterproof properties. The basis weight of SMS nonwoven fabric is 30~80g / m². 2 It should be noted that there are no restrictions on materials; any material that is waterproof and breathable can be used for the backing layer.

[0019] The beneficial effects of this utility model are that by setting an outer covering layer and an absorbent layer, the outer covering layer has a multi-layer structure and has the functions of hydrophilicity and protection. The absorbent layer is set in the cavity of the outer covering layer. The absorbent layer uses non-woven fabric, polyurethane foam and materials containing superabsorbent polymer (SAP), so that the dressing has high absorbency and water-locking properties, and can ensure uniform absorption of the permeate, avoid uneven swelling of the dressing, enhance absorption efficiency and comfort, and avoid the problem of uneven swelling of the absorbent layer. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the cross-sectional structure of the superabsorbent dressing in Example 1;

[0022] Figure 2 A top view of the layers of a superabsorbent dressing;

[0023] Figure 3 This is a schematic diagram of the cross-section of the absorption layer 3;

[0024] Figure 4 This is a schematic diagram of the cross-sectional structure of the superabsorbent dressing in Example 2;

[0025] In the diagram: 1. Protective layer 1; 2. Hydrophilic layer 1; 3. Absorbent layer 3; 4. Hydrophilic layer 2; 5. Protective layer 2; 6. Non-woven fabric layer; 7. Superabsorbent resin; 8. Polyurethane foam layer; 9. Backing layer; 10. Absorbent layer; 11. Hydrophilic layer 3; 12. Hydrophilic layer 4; 100. Outer covering layer. Detailed Implementation

[0026] The following description is only intended to disclose the present invention so that those skilled in the art can implement it. The embodiments in the following description are merely examples, and those skilled in the art will conceive of other obvious modifications. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other solutions that do not depart from the spirit and scope of the present invention.

[0027] Example 1:

[0028] A superabsorbent dressing, such as Figure 1 , Figure 2 It includes an absorbent layer 3 and an outer coating layer 100.

[0029] like Figure 3 The absorbent layer 3 includes a non-woven fabric layer 6, an adhesive layer, a polyurethane foam layer 8, and a superabsorbent resin 7. The non-woven fabric layer 6 and the polyurethane foam layer 8 are connected by an adhesive layer, which is a hot melt adhesive applied by a dot-coating process. The superabsorbent resin 7 is evenly dispersed between the non-woven fabric layer 6 and the polyurethane foam layer 8.

[0030] Optionally, the superabsorbent resin 7 is distributed in a dotted or striped manner; the dispersed superabsorbent resin 7 can be several independent structures or an interconnected integral structure.

[0031] In order to facilitate the uniform distribution of the superabsorbent resin 7 and ensure the flatness of the absorbent layer 3, in this embodiment, a number of recesses are provided on the polyurethane foam layer 8, and the superabsorbent resin 7 is disposed in the recesses.

[0032] By utilizing non-woven fabric and an absorbent layer containing superabsorbent polymer (SAP) material, the dressing not only possesses high absorbency and water-locking properties, but also ensures uniform absorption of the permeate, preventing uneven swelling and enhancing absorption efficiency and comfort.

[0033] The basis weight of absorber layer 3 is 200~800 g / m³. 2 Preferably, the basis weight of the absorbent layer is 550 g / m². 2 The nonwoven fabric layer 6 is preferably made of hydrophilic cotton nonwoven fabric, and its thickness is 0.5~3mm, preferably 2mm. The polyurethane foam 8 has a thickness of 2~4mm, preferably 3mm.

[0034] The outer coating 100 is disposed outside the absorbent layer 3 and includes at least a hydrophilic layer.

[0035] In this embodiment, as Figure 1 The outer cover 100 includes a protective layer 1, a hydrophilic layer 2, a hydrophilic layer 4, and a protective layer 5 arranged sequentially, with a cavity formed between the two hydrophilic layers, and an absorbent layer 3 disposed in the cavity.

[0036] The edges of the protective layer 1, hydrophilic layer 2, hydrophilic layer 4, and protective layer 5 can be fused together by means of yarn sewing, ultrasonic welding, adhesive bonding, or high-temperature hot pressing.

[0037] The protective layer is made of thermally rolled nonwoven fabric, which has good air permeability, flexibility, and water permeability. The basis weight of the thermally rolled nonwoven fabric is 20~30 g / m². 2 As a preferred option, the thermally rolled nonwoven fabric has a basis weight of 25 g / m². 2 It should be noted that the protective layer material is not limited; any material that is breathable and water-permeable can be used in this patent.

[0038] The hydrophilic layer is made of hydrophilic nonwoven fabric, which features high air permeability, high hydrophilicity, softness, light weight, and low cost. The basis weight of the hydrophilic nonwoven fabric is 10~20 g / m². 2 As a preferred option, the hydrophilic nonwoven fabric has a basis weight of 15 g / m². 2It should be noted that there are no restrictions on the materials used; any material that is breathable and hydrophilic can be used in this patent.

[0039] Example 2:

[0040] Unlike in Example 1, as Figure 4 In this embodiment, the outer cover 100 includes a backing layer 9, a hydrophilic layer three 11, and a hydrophilic layer four 12 arranged sequentially. After the backing layer 9 and the hydrophilic layer three 11 are connected at their edges, a cavity is formed between them, and the absorbent layer 3 is disposed in the cavity.

[0041] The edges of the backing layer 9, hydrophilic layer 3 11, and hydrophilic layer 4 12 can be fused together by means of yarn sewing, ultrasonic welding, adhesive bonding, or high-temperature hot pressing.

[0042] The backing layer 9 is made of SMS nonwoven fabric, which is highly breathable and waterproof. The weight of SMS nonwoven fabric is 30~80g / m². 2 The preferred SMS nonwoven fabric has a basis weight of 50g / m². 2 It should be noted that there are no restrictions on materials; any material that is waterproof and breathable can be used in the backing layer 9.

[0043] Both hydrophilic layers 3 (11) and 4 (12) are made of hydrophilic nonwoven fabric. The use of two layers of hydrophilic nonwoven fabric provides strong protection. Furthermore, hydrophilic nonwoven fabric is highly breathable, highly hydrophilic, soft, lightweight, and inexpensive. The basis weight of the hydrophilic nonwoven fabric is 10-20 g / m². 2 As a preferred option, the hydrophilic nonwoven fabric has a basis weight of 15 g / m². 2 .

[0044] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations and modifications.

Claims

1. A superabsorbent dressing, characterized in that: The material includes an absorbent layer (3) and an outer cover layer (100). The absorbent layer (3) includes a non-woven fabric layer (6), an adhesive layer, a polyurethane foam layer (8), and a superabsorbent resin (7). The non-woven fabric layer (6) and the polyurethane foam layer (8) are connected by the adhesive layer. The superabsorbent resin (7) is uniformly dispersed between the non-woven fabric layer (6) and the polyurethane foam layer (8). The outer cover layer (100) is disposed outside the absorbent layer (3) and includes at least a hydrophilic layer.

2. The superabsorbent dressing according to claim 1, characterized in that: The outer coating (100) includes a protective layer, a hydrophilic layer, a hydrophilic layer and a protective layer arranged in sequence, with a cavity formed between the two hydrophilic layers, and the absorbent layer (3) is disposed in the cavity.

3. The superabsorbent dressing according to claim 1, characterized in that: The outer cover (100) includes a backing layer (9) and two hydrophilic layers arranged in sequence, with a cavity formed between the backing layer (9) and the hydrophilic layers, and the absorbent layer (3) disposed in the cavity.

4. The superabsorbent dressing according to any one of claims 1-3, characterized in that: The polyurethane foam layer (8) has several recesses, and the superabsorbent resin (7) is disposed in the recesses.

5. The superabsorbent dressing according to claim 4, characterized in that: The peripheral edges of each layer in the outer covering (100) are connected as one unit.

6. The superabsorbent dressing according to claim 1 or 5, characterized in that: The basis weight of the absorbent layer (3) is 200~800g / m³. 2 The thickness of the nonwoven fabric layer (6) is 0.5~3mm, and the thickness of the polyurethane foam layer (8) is 2~4mm.

7. The superabsorbent dressing according to claim 1 or 5, characterized in that: The nonwoven layer (6) is made of hydrophilic cotton nonwoven fabric.

8. The superabsorbent dressing according to claim 2 or 3, characterized in that: The hydrophilic layer is made of hydrophilic nonwoven fabric.

9. The superabsorbent dressing according to claim 2, characterized in that: The protective layer is made of hot-rolled nonwoven fabric.

10. The superabsorbent dressing according to claim 3, characterized in that: The backing layer (9) is made of SMS nonwoven fabric.

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