Antibacterial and deodorant pure cotton nursing pad

Abstract

The invention provides an antibacterial and deodorant pure cotton nursing pad which comprises an anti-permeation base layer, an absorption core layer and a non-woven fabric surface layer, the absorption core layer is located between the anti-permeation base layer and the non-woven fabric surface layer, the absorption core layer contains an antibacterial material and a deodorant material, and the non-woven fabric surface layer is a hydrophilic-oleophylic non-woven fabric. The hydrophilic-oleophylic non-woven fabric is adopted, so that the nursing pad has excellent absorption performance, and liquid is prevented from staying on the surface of the nursing pad. Meanwhile, the invention further provides a preparation method of the hydrophilic-oleophylic non-woven fabric, and the method is simple, easy to operate and convenient for industrial production.

Description

Technical Field

[0001] The invention relates to a nursing consumable, in particular to an antibacterial and deodorizing pure cotton nursing pad. Background Art

[0002] Nursing pads are disposable sanitary products made mainly of PE film, non-woven fabrics, fluff pulp, polymers and other materials. They are mainly used in hospital surgery, gynecological examinations, maternal care, child care, paralyzed patients with incontinence, and women during menstruation. In addition, the use environment of nursing pads is relatively humid, which is easy to breed bacteria. Therefore, nursing pads also need to have antibacterial and deodorizing functions.

[0003] At present, there are many types of nursing pads on the market, most of which have certain antibacterial and deodorizing functions, such as: Chinese patent CN116262144A discloses an environmentally friendly and portable antibacterial and deodorizing nursing pad and its preparation method, Chinese patent CN112144134A discloses an antibacterial and deodorizing sanitary protective product and its preparation method, etc. However, the surface layer of the nursing pad absorbs liquids relatively slowly, making it easy for liquids to remain on the surface of the nursing pad.

[0004] In order to solve the above problems, people have been seeking an ideal technical solution. Summary of the invention

[0005] The purpose of the present invention is to provide an antibacterial and deodorizing pure cotton nursing pad in view of the deficiencies in the prior art.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] An antibacterial and deodorizing pure cotton nursing pad comprises an anti-penetration base layer, an absorbent core layer and a non-woven surface layer, wherein the absorbent core layer is located between the anti-penetration base layer and the non-woven surface layer, the absorbent core layer contains antibacterial material and deodorizing material, and the non-woven surface layer is a hydrophilic-lipophilic non-woven fabric.

[0008] The hydrophilic-oleophilic nonwoven fabric comprises 45-75% polypropylene, 15-25% hydrophilic material and 15-25% oleophilic material by weight; wherein the molecular weight Mn of the polypropylene is (1.02-1.32)×10 6 , the molecular weight distribution index is 2-3.

[0009] The hydrophilic material is selected from one or a combination of at least two of polyacrylamide, polyvinyl alcohol, polyacrylic acid, polymethyl methacrylate, and polyvinyl pyrrolidone; the lipophilic material is selected from one or a combination of at least two of polystyrene, polyvinyl chloride, polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer, polyoxyethylene polyoxypropylene ether block copolymer, and polyethylene glycol-block-polycaprolactone.

[0010] The molecular weight Mn of the hydrophilic material is (7-13)×10 5 The molecular weight Mn of the lipophilic material is 1.5×10 4 -2.5×10 6 .

[0011] Polypropylene, hydrophilic material and oleophilic material are dissolved in corresponding solvents respectively, and electrospinning is performed to obtain corresponding non-woven fabric fibers. A non-woven fabric surface layer with an interpenetrating network structure of polypropylene, hydrophilic material and oleophilic material is prepared from various non-woven fabric fibers.

[0012] Polypropylene is dissolved in an organic solvent to obtain a polypropylene solution.

[0013] The hydrophilic material, the lipophilic material and the deionized water are mixed and stirred at a speed of 1000-2000 r / min for 15-30 min to obtain a hydrophilic-lipophilic mixed liquid.

[0014] The mass percentage of deionized water in the hydrophilic-lipophilic mixed solution is 50%-80%; the mass percentage of the organic solution in the polypropylene solution is 75%-90%.

[0015] The present invention has outstanding substantial features and significant progress compared to the prior art. Specifically, the present invention provides an antibacterial and deodorizing pure cotton nursing pad, which adopts a hydrophilic-oleophilic non-woven fabric, so that the nursing pad has excellent absorption performance and prevents liquid from staying on the surface of the nursing pad. At the same time, the present invention also provides a preparation method of the hydrophilic-oleophilic non-woven fabric, which is simple, easy to operate, and convenient for industrial production. DETAILED DESCRIPTION

[0016] The technical solution of the present invention is further described in detail below through specific implementation methods.

[0017] An antibacterial and deodorizing pure cotton nursing pad comprises an anti-penetration base layer, an absorbent core layer and a non-woven surface layer, wherein the absorbent core layer is located between the anti-penetration base layer and the non-woven surface layer, the absorbent core layer contains antibacterial material and deodorizing material, and the non-woven surface layer is a hydrophilic-lipophilic non-woven fabric.

[0018] The hydrophilic-oleophilic nonwoven fabric comprises 45-75% polypropylene, 15-25% hydrophilic material and 15-25% oleophilic material by weight; wherein the molecular weight Mn of the polypropylene is (1.02-1.32)×10 6 , the molecular weight distribution index is 2-3.

[0019] The hydrophilic material is selected from one or a combination of at least two of polyacrylamide, polyvinyl alcohol, polyacrylic acid, polymethyl methacrylate, and polyvinyl pyrrolidone; the lipophilic material is selected from one or a combination of at least two of polystyrene, polyvinyl chloride, polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer, polyoxyethylene polyoxypropylene ether block copolymer, and polyethylene glycol-block-polycaprolactone.

[0020] The molecular weight Mn of the hydrophilic material is (7-13)×10 5 The molecular weight Mn of the lipophilic material is 1.5×10 4 -2.5×10 6 .

[0021] Polypropylene, hydrophilic material and oleophilic material are dissolved in corresponding solvents respectively, and electrospinning is performed to obtain corresponding non-woven fabric fibers. A non-woven fabric surface layer with an interpenetrating network structure of polypropylene, hydrophilic material and oleophilic material is prepared from various non-woven fabric fibers.

[0022] Polypropylene is dissolved in an organic solvent to obtain a polypropylene solution.

[0023] The hydrophilic material, the lipophilic material and the deionized water are mixed and stirred at a speed of 1000-2000 r / min for 15-30 min to obtain a hydrophilic-lipophilic mixed liquid.

[0024] The mass percentage of deionized water in the hydrophilic-lipophilic mixed solution is 50%-80%; the mass percentage of the organic solution in the polypropylene solution is 75%-90%.

[0025] Example 1

[0026] The present embodiment provides an antibacterial and deodorizing pure cotton nursing pad, comprising an anti-penetration base layer, an absorbent core layer and a non-woven surface layer, wherein the absorbent core layer is located between the anti-penetration base layer and the non-woven surface layer, the absorbent core layer contains antibacterial material and deodorizing material, and the non-woven surface layer is a hydrophilic-lipophilic non-woven fabric.

[0027] The hydrophilic-oleophilic nonwoven fabric comprises 50% polypropylene, 20% hydrophilic material and 20% oleophilic material by weight; wherein the molecular weight Mn of polypropylene is 1.2×10 6 , the molecular weight distribution index is 2.5; the hydrophilic material is polyacrylamide, the molecular weight Mn is 8×10 5 The lipophilic material includes a molecular weight Mn of 2.5×10 6 The molecular weight of polystyrene is 1.5×10 4 The mass ratio of polystyrene to the polyoxyethylene polyoxypropylene ether block copolymer is 2:1.

[0028] The present embodiment also provides a method for preparing the non-woven fabric surface layer: polypropylene is dissolved in an organic solvent to obtain a polypropylene solution; a hydrophilic material, an oleophilic material and deionized water are mixed and stirred at a speed of 1000-2000r / min for 15-30min to obtain a hydrophilic-oleophilic mixed solution; the polypropylene solution and the hydrophilic-oleophilic mixed solution are respectively subjected to electrostatic spinning to obtain corresponding non-woven fabric fibers, and various non-woven fabric fibers are prepared through common non-woven fabric production processes such as opening, mixing, and reinforcement to obtain a non-woven fabric surface layer with an interpenetrating network structure of polypropylene, hydrophilic material and oleophilic material; wherein the mass percentage of deionized water in the hydrophilic-oleophilic mixed solution is 68.2%; the mass percentage of organic solution in the polypropylene solution is 81.5%; the voltage of electrostatic spinning is 15kv, the receiving distance is 20cm, and the flow rate is 0.4mm / min.

[0029] Example 2

[0030] The present embodiment provides an antibacterial and deodorizing pure cotton nursing pad, comprising an anti-penetration base layer, an absorbent core layer and a non-woven surface layer, wherein the absorbent core layer is located between the anti-penetration base layer and the non-woven surface layer, the absorbent core layer contains antibacterial material and deodorizing material, and the non-woven surface layer is a hydrophilic-lipophilic non-woven fabric.

[0031] The hydrophilic-oleophilic nonwoven fabric comprises 55% polypropylene, 25% hydrophilic material and 20% oleophilic material by weight; wherein the molecular weight Mn of polypropylene is 1.02×10 6 , the molecular weight distribution index is 2.1; the hydrophilic material has a molecular weight Mn of 1.2×10 6 Polyacrylic acid, lipophilic materials include molecular weight Mn of 1.8×10 6 Polyvinyl chloride and molecular weight Mn is 1.5×10 4 Polyoxyethylene polyoxypropylene ether block copolymer; the mass ratio of polyvinyl chloride to polyoxyethylene polyoxypropylene ether block copolymer is 3:1.

[0032] The present embodiment also provides a method for preparing the non-woven fabric surface layer: polypropylene is dissolved in an organic solvent to obtain a polypropylene solution; a hydrophilic material, an oleophilic material and deionized water are mixed and stirred at a speed of 1000-2000r / min for 15-30min to obtain a hydrophilic-oleophilic mixed solution; the polypropylene solution and the hydrophilic-oleophilic mixed solution are respectively subjected to electrostatic spinning to obtain corresponding non-woven fabric fibers, and various non-woven fabric fibers are prepared through common non-woven fabric production processes such as opening, mixing, and reinforcement to obtain a non-woven fabric surface layer with an interpenetrating network structure of polypropylene, hydrophilic materials and oleophilic materials; wherein the mass percentage of deionized water in the hydrophilic-oleophilic mixed solution is 69.5%; the mass percentage of organic solution in the polypropylene solution is 83.6%; the voltage of electrostatic spinning is 15kv, the receiving distance is 20cm, and the flow rate is 0.4mm / min.

[0033] Example 3

[0034] The present embodiment provides an antibacterial and deodorizing pure cotton nursing pad, comprising an anti-penetration base layer, an absorbent core layer and a non-woven surface layer, wherein the absorbent core layer is located between the anti-penetration base layer and the non-woven surface layer, the absorbent core layer contains antibacterial material and deodorizing material, and the non-woven surface layer is a hydrophilic-lipophilic non-woven fabric.

[0035] The hydrophilic-oleophilic nonwoven fabric comprises 60% polypropylene, 15% hydrophilic material and 25% oleophilic material by weight; wherein the molecular weight Mn of polypropylene is 1.15×10 6 , the molecular weight distribution index is 2.5; the hydrophilic material has a molecular weight Mn of 9×10 5 Polyvinyl alcohol, lipophilic materials include molecular weight Mn of 1.5×10 4 -2.5×10 6 The molecular weight of polystyrene is 1.8×10 4 Polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer; the mass ratio of polystyrene to polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer is 3:1.

[0036] The present embodiment also provides a method for preparing the non-woven fabric surface layer: polypropylene is dissolved in an organic solvent to obtain a polypropylene solution; a hydrophilic material, an oleophilic material and deionized water are mixed and stirred at a speed of 1000-2000r / min for 15-30min to obtain a hydrophilic-oleophilic mixed solution; the polypropylene solution and the hydrophilic-oleophilic mixed solution are respectively subjected to electrostatic spinning to obtain corresponding non-woven fabric fibers, and various non-woven fabric fibers are prepared through common non-woven fabric production processes such as opening, mixing, and reinforcement to obtain a non-woven fabric surface layer with an interpenetrating network structure of polypropylene, hydrophilic material and oleophilic material; wherein the mass percentage of deionized water in the hydrophilic-oleophilic mixed solution is 68.7%; the mass percentage of organic solution in the polypropylene solution is 82.7%; the voltage of electrostatic spinning is 15kv, the receiving distance is 20cm, and the flow rate is 0.4mm / min.

[0037] To test the hydrophilicity and lipophilicity of the sample, gently lower the (100±1)mm*(100±1)mm sample horizontally from a position not higher than 2cm from the liquid surface (water surface or oil surface, water is deionized water, oil is general internal combustion engine oil) and start timing until the sample is completely soaked. This time is recorded as the soaking time. The test results are shown in Table 1.

[0038] Table 1 Soaking time

[0039] Oil soaking time Water soaking time Example 1 151.5s 163.7s Example 2 149.1s 155.6s Example 3 154.4s 157.9s

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. An antibacterial and deodorizing pure cotton nursing pad, comprising an impermeable base layer, an absorbent core layer and a non-woven fabric surface layer, wherein the absorbent core layer is located between the impermeable base layer and the non-woven fabric surface layer, and the absorbent core layer contains an antibacterial material and a deodorizing material, characterized in that: The non-woven fabric surface layer is a hydrophilic-oleophilic non-woven fabric.

2. The antibacterial and deodorizing pure cotton nursing pad according to claim 1, characterized in that: The hydrophilic-oleophilic nonwoven fabric comprises 45-75% polypropylene, 15-25% hydrophilic material and 15-25% oleophilic material by weight; wherein the molecular weight Mn of the polypropylene is (1.02-1.32)×10 6 , the molecular weight distribution index is 2-3.

3. The antibacterial and deodorizing pure cotton nursing pad according to claim 2, characterized in that: The hydrophilic material is selected from one or a combination of at least two of polyacrylamide, polyvinyl alcohol, polyacrylic acid, polymethyl methacrylate, and polyvinyl pyrrolidone; the lipophilic material is selected from one or a combination of at least two of polystyrene, polyvinyl chloride, polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer, polyoxyethylene polyoxypropylene ether block copolymer, and polyethylene glycol-block-polycaprolactone.

4. The antibacterial and deodorizing pure cotton nursing pad according to claim 3, characterized in that: The molecular weight Mn of the hydrophilic material is (7-13)×10 5 The molecular weight Mn of the lipophilic material is 1.5×10 4 -2.5×10 6 .

5. The antibacterial and deodorizing pure cotton nursing pad according to claim 4, characterized in that: Polypropylene, hydrophilic material and oleophilic material are dissolved in corresponding solvents respectively, and electrospinning is performed to obtain corresponding non-woven fabric fibers. A non-woven fabric surface layer with an interpenetrating network structure of polypropylene, hydrophilic material and oleophilic material is prepared from various non-woven fabric fibers.

6. The antibacterial and deodorizing pure cotton nursing pad according to claim 5, characterized in that: Polypropylene is dissolved in an organic solvent to obtain a polypropylene solution.

7. The antibacterial and deodorizing pure cotton nursing pad according to claim 6, characterized in that: The hydrophilic material, the lipophilic material and the deionized water are mixed and stirred at a speed of 1000-2000 r / min for 15-30 min to obtain a hydrophilic-lipophilic mixed solution.

8. The antibacterial and deodorizing pure cotton nursing pad according to claim 7, characterized in that: The mass percentage of deionized water in the hydrophilic-lipophilic mixed solution is 50%-80%; the mass percentage of the organic solvent in the polypropylene solution is 75%-90%.