Elastic filament composite non-woven fabric

Abstract

The utility model discloses an elastic filament composite non-woven fabric which comprises an upper spiral elastic filament surface layer, a polypropylene fiber melt-blown layer is hot-pressed on the lower surface of the upper spiral elastic filament surface layer, and a polypropylene fiber filling layer is hot-pressed and bonded on the lower surface of the polypropylene fiber melt-blown layer. A lower spiral elastic filament surface layer is adhered to the lower surface of the polypropylene fiber filling layer in a hot pressing manner, and the upper spiral elastic filament surface layer and the lower spiral elastic filament surface layer are the same in structure. The non-woven fabric has good stretchability in two directions, deformation and distortion of the non-woven fabric product are reduced, and the tensile property of the non-woven fabric is improved.

Description

Technical Field

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

[0002] The elastic filament composite nonwoven fabric achieves multiple functions such as softness, elasticity, absorbency and leak-proofness through its multi-layer structure, including the surface cloth, the internal elastic layer and the support layer. Its working principle is based on the softness provided by the surface layer and the elastic fibers of the internal elastic layer, making it suitable for various products with high comfort requirements, such as sanitary products, masks, clothing, etc., such as an elastic composite non-woven fabric disclosed in the authorization announcement number CN213082546U, in which the first thin non-woven material and the second thin non-woven material are connected to the surface of the elastic cotton by an adhesive, so that the elasticity of the composite non-woven fabric is increased and the service life of the composite non-woven fabric is improved; the first thin non-woven material, the second thin non-woven material and the elastic cotton, the bottom end of the first thin non-woven material, the top end of the second thin non-woven material and the surface of the elastic cotton are all provided with multiple groups of cotton blocks, but the technical scheme mainly utilizes the characteristics of the elastic cotton itself, so that the non-woven fabric layer has good ductility in the transverse direction, but in the depth direction, due to the use of elastic cotton, the tensile performance of the non-woven fabric layer is limited, which will limit the tensile performance of the product in this direction, especially for some applications that require depth stretchability, such as elastic bands, elastic bandages or elastic sheets, etc., the tensile performance of this technical scheme is insufficient. Utility Model Content

[0003] The utility model aims to provide an elastic filament composite nonwoven fabric to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an elastic filament composite nonwoven fabric, comprising an upper spiral elastic filament surface layer, a polypropylene fiber melt-blown layer is hot-pressed on the lower surface of the upper spiral elastic filament surface layer, and a polypropylene fiber filling layer is hot-pressed and bonded on the lower surface of the polypropylene fiber melt-blown layer;

[0005] A lower spiral elastic filament surface layer is hot-pressed and bonded to the lower surface of the polypropylene fiber filling layer. The upper spiral elastic filament surface layer and the lower spiral elastic filament surface layer have the same structure. Both the upper spiral elastic filament surface layer and the lower spiral elastic filament surface layer are formed by orthogonally arranging longitudinal spiral filaments and transverse wavy filaments through melt-blowing.

[0006] Preferably, gaps are provided between the turns of the longitudinal spiral filaments, and the transverse wavy filaments are located in the gaps.

[0007] Preferably, a silver ion antibacterial fabric layer is hot-pressed and bonded between the upper spiral elastic filament surface layer and the polypropylene fiber melt-blown layer, and a cotton cloth layer is hot-pressed and bonded between the polypropylene fiber melt-blown layer and the polypropylene fiber filling layer.

[0008] Preferably, the thickness of the polypropylene fiber filling layer is twice that of the polypropylene fiber meltblown layer.

[0009] Preferably, both the upper and lower surfaces of the cotton cloth layer are coated with a hot melt adhesive layer, and the hot melt adhesive layer is made of EVA hot melt adhesive.

[0010] Preferably, the thickness of the cotton cloth layers is 0.1 mm.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the elastic filament composite non-woven fabric is provided with a structure that cooperates with each other, such as a transverse wavy filament and a lower spiral elastic filament surface layer. The combination of longitudinal spiral filaments and transverse wavy filaments makes the non-woven fabric have good stretchability in two directions. The presence of transverse wavy filaments increases the surface area of ​​the non-woven fabric, making the non-woven fabric softer and more comfortable; the presence of longitudinal spiral filaments can enhance the tensile properties of the material, help reduce the deformation and distortion of the non-woven fabric product, and improve the tensile resistance of the non-woven fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The three-dimensional structure of the utility model in the explosion state is shown in FIG. Figure 1 ;

[0013] Figure 2 The three-dimensional structure of the utility model in the explosion state is shown in FIG. Figure 2 ;

[0014] Figure 3 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 4 This is a schematic diagram of the main cross-sectional structure of the surface layer of the upper spiral elastic filament of the utility model;

[0016] Figure 5 This is a schematic diagram of the three-dimensional structure of the transverse wavy filaments of the utility model;

[0017] In the figure: 1. upper spiral elastic filament surface layer; 101. longitudinal spiral filaments; 102. transverse wavy filaments; 103. gap portion; 2. silver ion antibacterial fabric layer; 3. polypropylene fiber meltblown layer; 4. cotton cloth layer; 5. polypropylene fiber filling layer; 6. lower spiral elastic filament surface layer; 7. hot melt adhesive layer. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-5 The utility model provides an embodiment: an elastic filament composite non-woven fabric, comprising an upper spiral elastic filament surface layer 1, a polypropylene fiber melt-blown layer 3 is hot-pressed on the lower surface of the upper spiral elastic filament surface layer 1, and a polypropylene fiber filling layer 5 is hot-pressed and bonded on the lower surface of the polypropylene fiber melt-blown layer 3, the polypropylene fiber melt-blown layer 3 is formed by spraying molten polymer onto the elastic filament layer through a spinneret, which can increase the stability and wear resistance of the non-woven fabric, making it more durable, and the polypropylene fiber filling layer 5 further increases the thickness of the non-woven fabric, making the non-woven fabric softer and more comfortable;

[0020] The lower surface of the polypropylene fiber filling layer 5 is hot-pressed and bonded with a lower spiral elastic filament surface layer 6. The upper spiral elastic filament surface layer 1 and the lower spiral elastic filament surface layer 6 have the same structure. The upper spiral elastic filament surface layer 1 and the lower spiral elastic filament surface layer 6 are both formed by orthogonally arranging longitudinal spiral filaments 101 and transverse wavy filaments 102 through melt-blowing.

[0021] A gap portion 103 is provided between the turns of the longitudinal spiral filament 101, and the transverse wavy filament 102 is located in the gap portion 103;

[0022] A silver ion antibacterial fabric layer 2 is hot-pressed and bonded between the upper spiral elastic filament surface layer 1 and the polypropylene fiber melt-blown layer 3. The silver ion antibacterial fabric layer 2 helps to maintain the hygienic properties of the material. The antibacterial effect of silver ions can reduce the number of these microorganisms, thereby alleviating the odor problem. A cotton cloth layer 4 is hot-pressed and bonded between the polypropylene fiber melt-blown layer 3 and the polypropylene fiber filling layer 5. The thickness of the cotton cloth layer 4 and the silver ion antibacterial fabric layer 2 are both 0.1 mm. The cotton cloth layer 4 increases the thickness and softness of the non-woven fabric, and improves its hygroscopicity and breathability.

[0023] The polypropylene fiber melt-blown layer 3 is formed by melt spinning and has good filtering performance and air permeability, while the polypropylene fiber filling layer 5 can increase the thickness and softness of the non-woven fabric, improve its thermal insulation performance and comfort. The thickness of the polypropylene fiber filling layer 5 is twice that of the polypropylene fiber melt-blown layer 3. The increase in the thickness of the filling layer can increase the density of the material, thereby improving the thermal insulation performance, and can also increase the thickness of the material and improve the thermal insulation effect;

[0024] The upper and lower surfaces of the cotton cloth layer 4 are coated with a hot melt adhesive layer 7. The hot melt adhesive layer 7 uses EVA hot melt adhesive. The hot melt adhesive layer 7 has good adhesion and elasticity and is suitable for bonding various materials. It becomes liquid at high temperature, and then solidifies again after cooling to form a strong bond, effectively ensuring the bonding stability between the surface layers of each structure.

[0025] When the embodiment of the present application is in use, first, the non-woven fabric is composed of an upper spiral elastic filament surface layer 1 and a lower spiral elastic filament surface layer 6 to form an upper and lower layer, so as to give the non-woven fabric its elastic properties, and the polypropylene fiber meltblown layer 3 and the polypropylene fiber filling layer 5 between the upper spiral elastic filament surface layer 1 and the lower spiral elastic filament surface layer 6 serve to increase the strength and stability of the non-woven fabric, wherein the combination of the longitudinal spiral filaments 101 and the transverse wavy filaments 102 enables the non-woven fabric to have good stretchability in both directions, and the presence of the transverse wavy filaments 102 increases the surface area of ​​the non-woven fabric, making the non-woven fabric softer and more comfortable; the presence of the longitudinal spiral filaments 101 can enhance the tensile properties of the material, which is very important for products that need to be continuously stretched and restored to their original shape during use, such as elastic bandages, elastic socks and elastic clothing, and at the same time, the structure of the longitudinal spiral filaments 101 can improve the overall structure of the product, increase its strength and stability, which helps to reduce the deformation and distortion of the non-woven product and improve the tensile resistance of the non-woven fabric.

[0026] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An elastic filament composite nonwoven fabric, characterized in that: It comprises an upper spiral elastic filament surface layer (1), a polypropylene fiber melt-blown layer (3) is hot-pressed on the lower surface of the upper spiral elastic filament surface layer (1), and a polypropylene fiber filling layer (5) is hot-pressed and bonded on the lower surface of the polypropylene fiber melt-blown layer (3); A lower spiral elastic filament surface layer (6) is hot-pressed and bonded to the lower surface of the polypropylene fiber filling layer (5); the upper spiral elastic filament surface layer (1) and the lower spiral elastic filament surface layer (6) have the same structure; the upper spiral elastic filament surface layer (1) and the lower spiral elastic filament surface layer (6) are both formed by orthogonally arranging longitudinal spiral filaments (101) and transverse wavy filaments (102) by melt-blowing.

2. The elastic filament composite nonwoven fabric according to claim 1, characterized in that: A gap portion (103) is provided between the turns of the longitudinal spiral filament (101), and the transverse wavy filament (102) is located in the gap portion (103).

3. The elastic filament composite nonwoven fabric according to claim 1, characterized in that: A silver ion antibacterial fabric layer (2) is hot-pressed and bonded between the upper spiral elastic filament surface layer (1) and the polypropylene fiber melt-blown layer (3), and a cotton cloth layer (4) is hot-pressed and bonded between the polypropylene fiber melt-blown layer (3) and the polypropylene fiber filling layer (5).

4. The elastic filament composite nonwoven fabric according to claim 3, characterized in that: The thickness of the polypropylene fiber filling layer (5) is twice that of the polypropylene fiber melt-blown layer (3).

5. The elastic filament composite nonwoven fabric according to claim 3, characterized in that: The upper and lower surfaces of the cotton cloth layer (4) are both coated with a hot melt adhesive layer (7), and the hot melt adhesive layer (7) is made of EVA hot melt adhesive.

6. The elastic filament composite nonwoven fabric according to claim 3, characterized in that: The thickness of the cotton cloth layer (4) is 0.1 mm.

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