CN212369351U

CN212369351U - Micro-nano alginate fiber composite polypropylene melt-blown fabric dressing

Info

Publication number: CN212369351U
Application number: CN202021629861.3U
Authority: CN
Inventors: 杨璧玲; 孙芮; 黄华诗; 姚佳欣
Original assignee: Guangdong Vocational and Technical College
Current assignee: Guangdong Vocational and Technical College
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2021-01-19
Anticipated expiration: 2030-08-07

Abstract

The invention discloses a micro-nano alginate fiber composite polypropylene melt-blown fabric dressing which sequentially comprises a micro-nano alginate fiber layer, a moisture-absorbing non-woven fabric layer, a polypropylene melt-blown fabric layer and a non-woven fabric surface layer, wherein the micro-nano alginate fiber layer is formed by spinning a sodium alginate solution with the fiber size of micron to nanometer level according to the gap size of micron to nanometer level and crosslinking and curing the sodium alginate solution with a calcium ion or strontium ion-containing solution. Because the use of the micro-nano structure and the polypropylene melt-blown cloth of micro-nano alginate fibrous layer, make this dressing compare with the alginic acid dressing product in the market, have more efficient imbibition performance and bacterium barrier performance (because the diameter size of most bacterium is between 0.5~5 mu m, so the micro-nano structure of material has possessed the barrier performance to the bacterium), and owing to adopted composite construction, compare the alginic acid dressing in the market of equal imbibition performance, can use a smaller amount of alginate material, the cost is lower.

Description

Micro-nano alginate fiber composite polypropylene melt-blown fabric dressing

Technical Field

The utility model relates to a medical material technical field, in particular to micro-nano alginate fiber composite polypropylene melt-blown fabric dressing.

Background

The main component of the alginate medical dressing is alginate, which is natural polysaccharide carbohydrate extracted from seaweed and is natural cellulose. The medical dressing can form soft gel after contacting wound exudate, provide an ideal moist environment for wound healing, promote wound healing, relieve wound pain and reduce scar formation. Meanwhile, the gel has the advantages of safety, no toxicity, high hygroscopicity, hemostatic property and gelling property.

However, the existing alginate fiber dressing is simple and crude in preparation method, and water-insoluble alginate is obtained mainly by crosslinking a sodium alginate aqueous solution and a solution containing calcium ions or strontium ions, is washed and then is crushed into an alginate short fiber material, and is molded by pressing and the like. The alginate fiber dressing prepared in this way has disordered internal structure, and the porosity and the fiber shape can not be controlled. When the porosity is too small, the amount of liquid which can be locked is reduced; when the porosity is too high, harmful substances such as bacteria from the outside may be able to penetrate the dressing into the wound.

Disclosure of Invention

The utility model provides a to above-mentioned problem, provide a micro-nano alginate fiber composite polypropylene melt-blown fabric dressing to solve one or more technical problem that exist among the prior art, provide a profitable selection or create the condition at least.

The utility model provides a little nano alginate fiber composite polypropylene melt-blown fabric dressing, includes little nano alginate fibrous layer, moisture absorption non-woven fabrics layer, polypropylene melt-blown fabrics layer and non-woven fabrics surface course in proper order, little nano alginate fibrous layer's fibre size is 0.1 mu m ~5 mu m, little nano alginate fibrous layer's pore size is 0.1 mu m ~5 mu m.

Furthermore, the moisture absorption non-woven fabric layer and the polypropylene melt-blown fabric layer are compounded in a hot-pressing mode in a point bonding mode.

Furthermore, an adhesive layer is arranged between the polypropylene melt-blown fabric layer and the non-woven fabric surface layer. The adhesive layer is formed by solidifying medical acrylate adhesive. The micro-nano alginate fiber layer, the moisture absorption non-woven fabric layer and the polypropylene melt-blown fabric layer jointly form a compound B, the areas of the non-woven fabric surface layer and the adhesive layer are larger than that of the compound B, and the edge-remaining area of more than 0.5cm extends out of the peripheral edge of the compound B, so that the whole compound B can be a medical article which directly covers a wound of a patient and adheres to the skin on the periphery of the wound.

Compared with the prior art, the utility model has the advantages that:

because the use of the micro-nano structure and the polypropylene melt-blown cloth of micro-nano alginate fibrous layer, make this dressing compare with the alginic acid dressing product in the market, have more efficient imbibition performance and bacterium barrier performance (because the diameter size of most bacterium is between 0.5~5 mu m, so the micro-nano structure of material has possessed the barrier performance to the bacterium), and owing to adopted composite construction, compare the alginic acid dressing in the market of equal imbibition performance, can use a smaller amount of alginate material, the cost is lower. The non-woven fabric surface layer can be subjected to waterproof treatment, so that the polypropylene melt-blown cloth layer is not easy to damage the function of electrostatic adsorption bacteria by water molecules in the external environment, and the service life of the polypropylene melt-blown cloth layer is effectively prolonged.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.

FIG. 1 is a schematic structural diagram of a micro-nano alginate fiber composite polypropylene melt-blown fabric dressing in example 1;

fig. 2 is a schematic structural diagram of the micro-nano alginate fiber composite polypropylene melt-blown dressing in example 2.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Example 1, a micro-nano alginate fiber composite polypropylene melt-blown fabric dressing. The method specifically comprises the following steps:

1) using a moisture absorption non-woven fabric layer as a receiving base fabric of spinning, spinning a sodium alginate solution on the moisture absorption non-woven fabric layer by using a microfluid spinning technology, enabling the fiber size of a micro-nano alginate fiber layer to be 0.1-5 mu m and the pore size to be 0.1-5 mu m, immersing the moisture absorption non-woven fabric layer into a solution containing calcium ions or strontium ions, and enabling the sodium alginate solution and the solution containing calcium ions or strontium ions to be crosslinked and solidified on the moisture absorption non-woven fabric layer to obtain a compound A;

2) superposing the moisture absorption non-woven fabric layer of the compound A and a polypropylene melt-blown fabric layer, and carrying out hot-pressing compounding in a point bonding mode to obtain a compound B;

3) compounding the polypropylene melt-blown cloth layer of the compound B with a non-woven fabric surface layer through an adhesive, and sterilizing and packaging to obtain the micro-nano alginate fiber compound polypropylene melt-blown cloth dressing.

The prepared dressing sequentially comprises a micro-nano alginate fiber layer 001, a moisture-absorbing non-woven fabric layer 002, a polypropylene melt-blown fabric layer 003 and a non-woven fabric surface layer 004 as shown in figure 1, wherein the micro-nano alginate fiber layer 001 is formed by spinning a sodium alginate solution with the fiber size of micron to nanometer level according to the gap size of micron to nanometer level and crosslinking and curing the sodium alginate solution with a calcium ion or strontium ion-containing solution. The moisture absorption non-woven fabric layer 002 and the polypropylene melt-blown fabric layer 003 are formed by hot-pressing and compounding in a point bonding mode. The polypropylene melt-blown fabric layer 003 and the non-woven fabric surface layer 004 can be compounded in an ultrasonic hot pressing mode and the like.

As a further implementation, the sodium alginate solution in the step 1) contains polyvinyl alcohol, DMSO and Trition X-100.

As a further implementation, the raw material of the moisture-absorbing non-woven fabric layer in the step 2) is selected from a combination of carboxymethyl cellulose fiber and chitosan fiber. The fabric is prepared by the process steps of mixing, carding, web forming, net laying, prewetting, spunlacing, drying and winding. The preparation method of the polypropylene melt-blown cloth layer comprises the following steps: polymer melting, filtering, metering, spinning, receiving into net, self-bonding consolidation.

Example 2, a micro-nano alginate fiber composite polypropylene melt-blown fabric dressing is shown in fig. 2. The difference from example 1 is that an adhesive layer 005 is further provided between the polypropylene melt-blown fabric layer 003 and the nonwoven fabric face layer 004. The adhesive layer 005 is formed by curing medical acrylate adhesive. The micro-nano alginate fiber layer 001, the moisture absorption non-woven fabric layer 002 and the polypropylene melt-blown fabric layer 003 jointly form a compound B, the area of the non-woven fabric surface layer 004 and the area of the adhesive layer 005 are larger than that of the compound B, and the peripheral edge of the compound B extends out of a margin area of more than 0.5cm, so that the whole compound B can be a medical article which directly covers a wound of a patient and adheres to the skin at the periphery of the wound.

The above detailed description describes the preferred embodiments of the present invention, but the present invention is not limited to the details of the above embodiments, and the technical idea of the present invention is within the scope of the present invention, which can be right to the technical solution of the present invention, and these all belong to the protection scope of the present invention.

Claims

1. The utility model provides a micro-nano alginate fiber composite polypropylene melt-blown fabric dressing which characterized in that includes micro-nano alginate fibrous layer, moisture absorption non-woven fabrics layer, polypropylene melt-blown fabrics layer and non-woven fabrics surface course in proper order, micro-nano alginate fibrous layer's fibre size is 0.1 mu m ~5 mu m, micro-nano alginate fibrous layer's pore size is 0.1 mu m ~5 mu m.

2. The micro-nano alginate fiber composite polypropylene melt-blown fabric dressing of claim 1, wherein the moisture-absorbing non-woven fabric layer and the polypropylene melt-blown fabric layer are formed by hot-pressing and compounding in a point bonding manner.

3. The dressing of claim 1, wherein an adhesive layer is further disposed between the polypropylene melt-blown fabric layer and the non-woven fabric surface layer.

4. The micro-nano alginate fiber composite polypropylene melt-blown cloth dressing of claim 3, wherein the adhesive layer is formed by curing medical acrylate adhesive.

5. The dressing of claim 4, wherein the area of the non-woven fabric surface layer and the adhesive layer is larger than that of the polypropylene melt-blown fabric layer, and the peripheral edge of the polypropylene melt-blown fabric layer extends to form a margin area of more than 0.5 cm.