Skin-friendly dry non-woven fabric

Abstract

The utility model provides a skin-friendly dry non-woven fabric, which adopts a hot air double-carding technology and comprises an upper layer, a lower layer and a middle layer formed by superposing upper and lower layers of fibers, the upper layer is formed by fine denier weak oleophylic agent fibers, the lower layer is formed by coarse denier strong oleophylic agent fibers, and the middle layer is formed by mixing weak hydrophilic oil agent fibers and strong hydrophilic oil agent fibers. A plurality of funnel-shaped structures are formed on the middle layer, the tops of the funnel-shaped structures are formed by weak hydrophilic oil agent fibers, and the bottoms of the funnel-shaped structures are formed by strong hydrophilic oil agent fibers; the thickness of the upper layer is 1 / 4-1 / 2 of that of the lower The upper layer is dry and skin-friendly, the lower layer is fluffy and easy to diffuse, the friction feeling of the surface layer to the skin is effectively reduced, meanwhile, the infiltration speed is increased, and the back infiltration amount is reduced; the material can replace structures of middle surface layers and diversion layers of paper diapers and sanitary napkins, the production cost is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of nonwoven fabric technology, specifically to a skin-friendly and dry nonwoven fabric. Background Technology

[0002] Non-woven fabric, also known as non-woven cloth or non-woven material, is a sheet, web, or pad made of fibers arranged in a directional or random manner, bonded together through friction, cohesion, or adhesion, or a combination of these methods. Non-woven fabrics are characterized by moisture resistance, breathability, flexibility, light weight, non-flammability, easy decomposition, non-toxicity, non-irritation, rich colors, low price, and recyclability. They are widely used in the surface layer structure of sanitary napkins and diapers.

[0003] Existing patent application (CN215535669U) discloses an absorbent nonwoven fabric and a dry, antibacterial bamboo fiber sanitary napkin, comprising a skin-friendly surface layer, a diversion layer, an absorbent layer, and a bottom layer sequentially laminated together. The skin-friendly surface layer is a blended spunlace nonwoven fabric composed of at least unbleached bamboo fiber, chitosan fiber, and polylactic acid fiber. This dry, antibacterial bamboo fiber sanitary napkin exhibits excellent antibacterial properties, dryness, and skin-friendliness.

[0004] With changing modern lifestyles, more and more people are paying attention to the overall quality of disposable hygiene products, including comfort, cleanliness, and performance. They demand that the fabrics be natural and non-irritating, soft to the touch, keep the surface dry, and quickly absorb liquids to reduce bacterial growth. Summary of the Invention

[0005] To address the aforementioned issues, this invention provides a skin-friendly and dry nonwoven fabric that effectively reduces friction on the skin while increasing absorption speed and reducing rewetting.

[0006] This utility model provides a skin-friendly and dry nonwoven fabric, comprising an upper layer, a lower layer, and an intermediate layer disposed between the upper and lower layers. The upper layer is composed of weakly hydrophilic oil-based fibers, the lower layer is composed of strongly hydrophilic oil-based fibers, and the intermediate layer is composed of a mixture of weakly hydrophilic oil-based fibers and strongly hydrophilic oil-based fibers. Several funnel-shaped structures composed of weakly hydrophilic oil-based fibers at the top and strongly hydrophilic oil-based fibers at the bottom are formed on the intermediate layer. The thickness of the upper layer is 1 / 4 to 1 / 2 of the thickness of the lower layer.

[0007] The skin-friendly and dry nonwoven fabric of this utility model, as a preferred embodiment, has a core-sheath structure with weak hydrophilic oil-coating fibers, including a sheath layer, a core layer disposed inside the sheath layer, and a weak hydrophilic oil-coating agent coated on the surface of the sheath layer.

[0008] In the preferred embodiment of the skin-friendly and dry nonwoven fabric described in this utility model, the fineness of the weakly hydrophilic oil-based fiber is 0.8D.

[0009] The skin-friendly and dry nonwoven fabric of this utility model, as a preferred embodiment, has a core-sheath structure with strong hydrophilic oil-coated fibers, including a sheath layer, a core layer disposed inside the sheath layer, and a strong hydrophilic oil-coated on the surface of the sheath layer.

[0010] In the preferred embodiment of the skin-friendly and dry nonwoven fabric described in this utility model, the fineness of the strong hydrophilic oil-based fiber is 2-6D.

[0011] The skin-friendly and dry nonwoven fabric described in this utility model, as a preferred embodiment, has a polyethylene outer layer and a polyester core layer.

[0012] The skin-friendly and dry nonwoven fabric described in this utility model, as a preferred embodiment, has a basis weight range of 22-35 g / m². 2 .

[0013] In a preferred embodiment of the skin-friendly and dry nonwoven fabric described in this utility model, the fiber gaps at the top of the funnel-shaped structure are smaller than those at the bottom.

[0014] The skin-friendly and dry nonwoven fabric described in this utility model is preferably made using hot air double combing technology.

[0015] Compared to existing absorbent nonwoven fabrics, this invention features a dry and skin-friendly upper layer and a fluffy and easily diffused lower layer. The fiber gaps at the top of the funnel-shaped structure are smaller than those at the bottom, allowing liquid to quickly seep down and diffuse horizontally. This effectively reduces the friction of the surface layer on the skin while increasing the seepage speed and reducing the amount of backflow. Attached Figure Description

[0016] Fig. 1 This is a schematic diagram of the structure of a skin-friendly and dry nonwoven fabric according to this utility model;

[0017] Fig. 2 This is a schematic diagram of the fibers of a skin-friendly and dry nonwoven fabric according to this utility model.

[0018] Figure Labels

[0019] 1. Upper layer; 2. Lower layer; 3. Middle layer; 4. Cortex; 5. Core layer. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Example 1

[0022] like Figs. 1-2As shown, a skin-friendly and dry nonwoven fabric comprises two layers. The upper layer 1 uses 0.8D PE / PET weakly oleophilic fibers, and the lower layer 2 uses 2.0D PE / PET strongly hydrophilic and oleophilic fibers plus 2.5D PE / PET strongly hydrophilic and oleophilic fibers. Between the upper layer 1 and the lower layer 2 is a moisture-barrier intermediate layer 3, which is composed of a mixture of weakly and strongly hydrophilic fibers. Several funnel-shaped structures are formed on the intermediate layer 3, with weakly hydrophilic fibers at the top and strongly hydrophilic fibers at the bottom. The thickness of the upper layer 1 is approximately 1 / 4 of the thickness of the lower layer 2. Both the weakly hydrophilic and hydrophilic fibers have a core-sheath structure, which includes a sheath layer 4 and a core layer 5. The core layers 5 are interconnected by molten sheath layers 4. The thickness of the upper layer 1 is approximately 1 / 3 of the thickness of the lower layer 2. The basis weight of the skin-friendly and dry nonwoven fabric is 22 g / m². 2 It is made using hot air dual combing technology.

[0023] Compared to the previous sample 1, the upper layer used 1.2D PE / PET hydrophilic fiber plus 2D PE / PET hydrophilic fiber, and the lower layer used 2D PE / PET hydrophilic fiber.

[0024] The test showed that the penetration time of the skin-friendly dry nonwoven fabric was 1.15s, while that of the control sample 1 was 1.51s; the moisture return of the skin-friendly dry nonwoven fabric was 0.047g, while that of the control sample 1 was 0.045g.

[0025] Example 2

[0026] like Figs. 1-2 As shown, a skin-friendly and dry nonwoven fabric includes two layers. The upper layer 1 uses 0.8D PE / PET weakly hydrophilic oil-repellent fibers, and the lower layer 2 uses 4.0D PE / PET strongly hydrophilic oil-repellent fibers plus 6.0D PE / PET strongly hydrophilic oil-repellent fibers. A moisture-proof intermediate layer 3 is formed between the upper layer 1 and the lower layer 2. The intermediate layer 3 is composed of a mixture of weakly and strongly hydrophilic oil-repellent fibers, forming several funnel-shaped structures with weakly hydrophilic oil-repellent fibers at the top and strongly hydrophilic oil-repellent fibers at the bottom. The thickness of the upper layer 1 is approximately half the thickness of the lower layer 2. Both the water-repellent and hydrophilic oil-repellent fibers have a core-sheath structure, which includes a sheath layer 4 and a core layer 5. The core layers 5 are interconnected by molten sheath layers 4. The thickness of the upper layer 1 is approximately one-third the thickness of the lower layer 2. The basis weight of the skin-friendly and dry nonwoven fabric is 35 g / m². 2 It is made using hot air dual combing technology.

[0027] Compared to the previous sample 2, the upper layer used 2D PE / PET strong hydrophilic fiber plus 2.5D PE / PET hydrophobic fiber, and the lower layer used 2D PE / PET hydrophilic fiber plus 2D PE / PET hydrophobic fiber.

[0028] The test showed that the penetration time of the skin-friendly dry nonwoven fabric was 1.21s, while that of the control sample 2 was 1.48s; the moisture return of the skin-friendly dry nonwoven fabric was 0.042g, while that of the control sample 2 was also 0.042g.

[0029] The above description is illustrative only and not restrictive. Those skilled in the art will understand that any modifications, variations or equivalents that can be made without departing from the spirit and scope defined by the claims will fall within the protection scope of this utility model.

Claims

1. A skin-friendly dry nonwoven fabric, characterized by: The skin-friendly dry non-woven fabric comprises an upper layer (1), a lower layer (2) and an intermediate layer (3) arranged between the upper layer (1) and the lower layer (2), the upper layer (1) is composed of weakly lipophilic fibers, the lower layer (2) is composed of strongly hydrophilic fibers, and the intermediate layer (3) is composed of weakly lipophilic fibers and the strongly hydrophilic fibers, and a funnel-shaped structure with the weakly lipophilic fibers at the top and the strongly hydrophilic fibers at the bottom is formed on the intermediate layer (3); the thickness of the upper layer (1) is 1 / 4-1 / 2 of the thickness of the lower layer (2).

2. The skin-friendly dry nonwoven fabric according to claim 1, characterized in that: The weakly lipophilic fibers are of a sheath-core structure, comprising a sheath layer (4), a core layer (5) arranged inside the sheath layer (4) and a weakly hydrophilic oil agent coated on the surface of the sheath layer (4).

3. The skin-friendly dry nonwoven fabric according to claim 2, characterized in that: The fineness of the weakly lipophilic fibers is 0.8D.

4. The skin-friendly dry nonwoven fabric according to claim 1, characterized in that: The strongly hydrophilic fibers are of a sheath-core structure, comprising a sheath layer (4), a core layer (5) arranged inside the sheath layer (4) and a strongly hydrophilic oil agent coated on the surface of the sheath layer (4).

5. The skin-friendly dry nonwoven fabric according to claim 4, characterized in that: The fineness of the strongly hydrophilic fibers is 2-6D.

6. The skin-friendly dry nonwoven fabric according to any one of claims 2 to 5, characterized in that: The sheath layer (4) is polyethylene, and the core layer (5) is polyester.

7. The skin-friendly dry nonwoven fabric according to claim 6, characterized in that: The skin-friendly dry nonwoven fabric has a grammage ranging from 22 to 35 g / m 2 .

8. The skin-friendly dry nonwoven fabric according to claim 6, characterized in that: The fiber gap at the top of the funnel-shaped structure is smaller than that at the bottom.

9. The skin-friendly dry nonwoven fabric according to claim 6, characterized in that: The skin-friendly dry non-woven fabric is made by using hot air double carding technology.

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