Elastic non-woven fabric

Abstract

The elastic non-woven fabric comprises a surface fiber layer, an adsorption fiber layer, a three-dimensional crimped fiber layer, an antibacterial fiber layer and a coarse denier fiber layer which are compounded with one another, the surface fiber layer is a spunlace microfiber non-woven fabric; fibers used by the adsorption fiber layer are bamboo charcoal fibers, and fibers used by the antibacterial fiber layer are chinlon-based silver-plated fibers; fibers used by the three-dimensional crimped fiber layer are three-dimensional crimped polylactic acid fibers. According to the elastic non-woven fabric, the three-dimensional crimped fiber layer is adopted, so that the layer is fluffy and has certain elasticity in the thickness direction, and an insole made of the elastic non-woven fabric is more comfortable to wear. And the used chinlon-based silver-plated fiber has a good antibacterial effect, and the bamboo charcoal fiber has a peculiar smell adsorption effect.

Description

Technical Field

[0001] The utility model relates to an elastic non-woven fabric, belonging to the technical field of non-woven fabrics. Background Art

[0002] Insoles are an indispensable item in people's daily life, which can make shoes more comfortable. Existing insoles are usually made of textile fabrics, which are woven fabrics or knitted fabrics, and the elasticity in the thickness direction is poor, which may cause discomfort when used. And now the use of insoles is not limited to comfort, but also requires them to have good antibacterial effects to avoid the growth of bacteria on the feet and in shoes. How to prepare a non-woven fabric for shoes with antibacterial function and elasticity in the thickness direction has become a technical problem to be solved. Utility Model Content

[0003] The utility model aims to provide an elastic nonwoven fabric which has good elasticity in the thickness direction and also has antibacterial effect.

[0004] In order to solve the above technical problems, the purpose of the utility model is achieved as follows:

[0005] The utility model relates to an elastic nonwoven fabric, comprising a composite surface fiber layer, an adsorption fiber layer, a three-dimensional curled fiber layer, an antibacterial fiber layer and a coarse denier fiber layer;

[0006] The surface fiber layer is spunlace microfiber non-woven fabric; the fiber used in the adsorption fiber layer is bamboo charcoal fiber, the fiber used in the antibacterial fiber layer is nylon-based silver-plated fiber; the fiber used in the three-dimensional curled fiber layer is three-dimensional curled polylactic acid fiber.

[0007] On the basis of the above scheme and as a preferred scheme of the above scheme: the three-dimensional curled polylactic acid fiber is a parallel polylactic acid fiber, including a first parallel part and a second parallel part arranged in parallel; the first parallel part is conventional polylactic acid, and the second parallel part is low-melting point polylactic acid; the melting point of the conventional polylactic acid is 173.5°C, and the melting point of the low-melting point polylactic acid is 142°C.

[0008] On the basis of the above scheme and as a preferred scheme of the above scheme: the fineness of the fiber used in the coarse denier fiber layer is 3-5D and the length is 38mm.

[0009] On the basis of the above solution and as a preferred solution of the above solution: a microsphere pressure-sensitive adhesive layer is provided on the surface of the coarse-denier fiber layer on the side away from the antibacterial fiber layer.

[0010] On the basis of the above scheme and as a preferred scheme of the above scheme: a far-infrared fiber layer is arranged between the adsorption fiber layer and the three-dimensional curled fiber layer.

[0011] The utility model has the following beneficial effects: the elastic nonwoven fabric of the utility model has a three-dimensional curled fiber layer, which can make the layer more fluffy and have a certain elasticity in the thickness direction, so that the insole prepared by the layer is more comfortable to wear. The nylon-based silver-plated fiber used has a good antibacterial effect, and the bamboo charcoal fiber has an odor absorption effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of the elastic nonwoven fabric involved in Example 1;

[0013] Figure 2 is a schematic diagram of the cross-sectional structure of the three-dimensional curled polylactic acid fiber involved in Example 1;

[0014] Figure 3 It is a schematic diagram of the structure of the elastic nonwoven fabric involved in the second embodiment.

[0015] The markings in the figure are as follows: 1-surface fiber layer; 2-adsorption fiber layer; 3-three-dimensional curled fiber layer; 4-antibacterial fiber layer; 5-coarse denier fiber layer; 6-microsphere pressure-sensitive adhesive layer; 7-far-infrared fiber layer; 31-first parallel part; 32-second parallel part. DETAILED DESCRIPTION

[0016] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0017] Embodiment 1

[0018] Combination Figure 1 and Figure 2 , this embodiment is described in detail. The elastic nonwoven fabric involved in this embodiment includes a composite surface fiber layer 1, an adsorption fiber layer 2, a three-dimensional curled fiber layer 3, an antibacterial fiber layer 4 and a coarse denier fiber layer 5. Specifically, the adsorption fiber layer 2, the three-dimensional curled fiber layer 3, the antibacterial fiber layer 4 and the coarse denier fiber layer 5 are overlapped and then composited by needle punching. The surface fiber layer 1 is a spunlace nonwoven fabric, which is composited with the adsorption fiber layer 2 through a hot melt adhesive layer.

[0019] The surface fiber layer 1 is a spunlace microfiber non-woven fabric; specifically, it is formed by spunlace microfibers, has a soft touch, and can improve the comfort during use.

[0020] The fiber used in the adsorption fiber layer 2 is bamboo charcoal fiber. The cross section of bamboo charcoal fiber is full of large and small oval pores, with super strong adsorption capacity: bamboo charcoal has an adsorption capacity more than 5 times that of charcoal, and can absorb, decompose odor and deodorize harmful substances and dust such as formaldehyde, benzene, toluene, ammonia, etc. It also has antibacterial and antibacterial effects, with an antibacterial rate of 94.5%: after full SGS testing, the same number of bacteria observed under a microscope can multiply in large numbers in cotton and wood fiber products, while the bacteria on bamboo charcoal and bamboo fiber fabrics will be reduced by 94.5% after 24 hours.

[0021] The fiber used in the antibacterial fiber layer 4 is nylon-based silver-plated fiber, which can make the non-woven fabric have a good antibacterial effect, resist the growth of bacteria, and protect the health of human feet.

[0022] The fiber used in the three-dimensional curled fiber layer 3 is a three-dimensional curled polylactic acid fiber. The three-dimensional curled polylactic acid fiber is a parallel type polylactic acid fiber, including a first parallel portion 31 and a second parallel portion 32 arranged in parallel; the first parallel portion 31 is conventional polylactic acid, and the second parallel portion 32 is low-melting point polylactic acid; the melting point of the conventional polylactic acid is 173.5°C, and the melting point of the low-melting point polylactic acid is 142°C. Conventional polylactic acid and low-melting point polylactic acid have different thermal shrinkage properties, so that the fiber will have a three-dimensional curled structure after heat treatment.

[0023] Furthermore, the fiber used in the coarse denier fiber layer 5 has a fineness of 3-5D and a length of 38 mm. In this embodiment, 3D is selected, specifically nylon 6 fiber. Coarse denier fiber has a better friction effect when in contact with the inner surface of the shoe, thereby having a certain anti-slip effect.

[0024] Embodiment 2

[0025] Combination Figure 3, this embodiment is described in detail. The elastic non-woven fabric involved in this embodiment is different from that in the first embodiment in that: a microsphere pressure-sensitive adhesive layer 6 is provided on the surface of the coarse denier fiber layer 5 on the side away from the antibacterial fiber layer 4. The microsphere pressure-sensitive adhesive used in the microsphere pressure-sensitive adhesive layer 6 is a peelable type of acrylate pressure-sensitive adhesive. Acrylic pressure-sensitive adhesive is the most widely used pressure-sensitive adhesive at present. It is a copolymer of acrylate monomer and other vinyl monomers. Compared with other pressure-sensitive adhesives, it has the following characteristics: it has excellent weather resistance and heat resistance without adding antioxidants; there is no phase separation and migration phenomenon, good transparency, good oil resistance; no effect on the skin. Acrylic pressure-sensitive adhesives can also be divided into emulsion type, solvent type, hydrosol type, peelable type, re-peelable type, radiation curing type and hot melt type according to different types. The nonwoven fabric is of peelable type: microspheres are prepared from acrylic ester monomers by suspension method, and then coated with pressure-sensitive adhesive made of solvent or emulsifier. After drying, it has unique re-peeling performance, can be peeled off and pasted repeatedly, which is conducive to tearing the insole from the shoe surface.

[0026] Another difference from the first embodiment is that a far-infrared fiber layer 7 is provided between the absorption fiber layer 2 and the three-dimensional curled fiber layer 3. The fiber used in the far-infrared fiber layer 7 is far-infrared polyester fiber.

[0027] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. An elastic nonwoven fabric, characterized in that: It comprises a composite surface fiber layer (1), an adsorption fiber layer (2), a three-dimensional curled fiber layer (3), an antibacterial fiber layer (4) and a coarse denier fiber layer (5); The surface fiber layer (1) is a spunlace microfiber non-woven fabric; the fibers used in the adsorption fiber layer (2) are bamboo charcoal fibers; the fibers used in the antibacterial fiber layer (4) are nylon-based silver-plated fibers; and the fibers used in the three-dimensional curled fiber layer (3) are three-dimensional curled polylactic acid fibers.

2. The elastic nonwoven fabric according to claim 1, characterized in that: The three-dimensional curled polylactic acid fiber is a parallel type polylactic acid fiber, comprising a first parallel portion and a second parallel portion arranged in parallel; the first parallel portion is conventional polylactic acid, and the second parallel portion is low melting point polylactic acid.

3. The elastic nonwoven fabric according to claim 1, characterized in that: The fiber used in the coarse denier fiber layer (5) has a fineness of 3-5D and a length of 38 mm.

4. The elastic nonwoven fabric according to claim 1, characterized in that: A microsphere pressure-sensitive adhesive layer (6) is provided on the surface of the coarse-denier fiber layer (5) on the side away from the antibacterial fiber layer (4).

5. The elastic nonwoven fabric according to claim 4, characterized in that: A far-infrared fiber layer (7) is provided between the adsorption fiber layer (2) and the three-dimensional curled fiber layer (3).

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