Needle-punched non-woven fabric for shoe lining and shoe

Abstract

The utility model discloses a needle-punched non-woven fabric for a shoe lining. The needle-punched non-woven fabric comprises a first unit layer, a second unit layer and a hot melt adhesive bonding layer which is bonded between the first unit layer and the second unit layer, the hot melt adhesive bonding layer is provided with a through hole or a through groove penetrating through the thickness direction, the first area of the first unit layer and the first area of the second unit layer are right opposite to the through hole or the through groove, and the first area of the first unit layer and the first area of the second unit layer are intertwined through puncture layers; and the hot melt adhesive bonding layer is bonded with the in-layer entangled surfaces of the first unit layer and the second unit layer. The needle-punched non-woven fabric for the shoe lining comprises the hot melt adhesive bonding layer, interlayer connection between the first unit layer and the second unit layer can be achieved through the hot melt adhesive bonding layer and puncture fibers extending in the thickness direction, the interlayer peeling strength of the non-woven fabric can be improved, and the needle-punched non-woven fabric for the shoe lining is integrally soft, good in air permeability and good in elasticity. The shoe sole is suitable for shoes with low requirements for the three-dimensional effect of the vamps or shoes with soft vamps. The utility model further discloses a pair of shoes.

Description

Technical Field

[0001] The utility model relates to the technical field of air filtering materials, in particular to a needle-punched nonwoven fabric for shoe lining and a shoe. Background Art

[0002] Non-woven fabrics have no obvious warp and weft lines, so they are easy to cut and sew. Taking sports shoes as an example, needle-punched non-woven fabrics are mainly used to reinforce the upper material or the eyelets. The reinforced upper material has a better three-dimensional sense, and the reinforced eyelets are straight, which can also increase the tension of the eyelets. Both of the above needle-punched non-woven fabrics are provided with bonding surfaces to enhance the convenience of reinforcement and bonding.

[0003] For some shoes with soft uppers, knitted non-woven fabrics are required to have a predetermined flexibility, and the needle punching density of the non-woven fabric needs to be appropriately reduced. However, a lower needle punching density will lead to poor adhesion between the non-woven fabric and the reinforcing substrate. In addition, the interlayer peeling strength of the non-woven fabric sample itself is also reduced accordingly, which is not conducive to maintaining the normal service life of the shoe. Utility Model Content

[0004] One of the purposes of the utility model is to overcome the defects existing in the prior art and provide a needle-punched non-woven fabric for shoe lining, by arranging a hot-melt adhesive bonding layer in the local sandwich of the non-woven fabric plane with a low puncture density, so as to improve the interlayer peeling strength of the relatively soft reinforcing non-woven fabric.

[0005] In order to achieve the above-mentioned technical effects, the technical solution of the utility model is: a needle-punched non-woven fabric for shoe lining, comprising a first unit layer, a second unit layer, and a hot-melt adhesive layer bonded between the first unit layer and the second unit layer; the hot-melt adhesive layer has a through hole or a through groove running through the thickness direction, the first area of ​​the first unit layer and the second unit layer is arranged opposite to the through hole or the through groove, and the first area of ​​the first unit layer and the second unit layer is entangled through the puncture interlayer; the hot-melt adhesive layer is bonded to the intra-layer entangled surface of the first unit layer and the second unit layer.

[0006] A preferred technical solution is that the hot melt adhesive layer includes a plurality of hot melt adhesive strips parallel to each other, and the hot melt adhesive strips extend along a straight line within an extension plane of the first unit layer.

[0007] A preferred technical solution is that the fiber density of the second unit layer is greater than the fiber density of the first unit layer, and the surface of the second unit layer facing away from the first unit layer is configured as a bonding reinforcement substrate.

[0008] A preferred technical solution is that the hot melt adhesive layer is an elastomeric adhesive.

[0009] A preferred technical solution is that the hot melt adhesive strips are distributed at equal intervals, and the spacing between adjacent hot melt adhesive strips is not less than the width of the hot melt adhesive strip.

[0010] A preferred technical solution is that the density of entangled fibers within each of the first unit layer and the second unit layer is smaller than the density of entangled fibers between layers.

[0011] A preferred technical solution is that the first unit layer comprises a laminated substrate layer and an antibacterial surface layer, and the antibacterial surface layer is entangled with antibacterial fibers.

[0012] A preferred technical solution is that the hot melt adhesive layer is composed of adhesive dots arranged in a rectangular array.

[0013] A preferred technical solution is that the spacing between the hot melt adhesive strips and the width of the hot melt adhesive strips are 5 to 15 mm.

[0014] The second object of the utility model is to provide a shoe, comprising the needle-punched non-woven fabric for shoe lining.

[0015] The advantages and beneficial effects of the utility model are:

[0016] The needle-punched nonwoven fabric for shoe lining includes a hot-melt adhesive layer, which is beneficial for the hot-melt adhesive layer and the piercing fibers extending in the thickness direction to achieve interlayer connection between the first unit layer and the second unit layer, and is beneficial for improving the interlayer peeling strength of the nonwoven fabric itself. The needle-punched nonwoven fabric for shoe lining is soft as a whole and has good air permeability, and is suitable for shoes with low requirements for three-dimensional surface effects or soft uppers themselves. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a cross-sectional view of a needle-punched nonwoven fabric for shoe lining in an embodiment;

[0018] Figure 2 is a schematic diagram of the assembly structure of the first unit layer, the hot melt adhesive layer and the second unit layer before hot pressing;

[0019] Figure 3 It is a schematic diagram of the assembly structure of the first unit layer, the hot melt adhesive layer and the second unit layer after hot pressing and before interlayer puncture;

[0020] Figure 4 is a cross-sectional view of a needle-punched nonwoven fabric for shoe lining according to another embodiment;

[0021] Figure 5 2 is a schematic diagram of the three-dimensional structure of a needle-punched nonwoven fabric for shoe lining according to another embodiment;

[0022] In the figure: 1, first unit layer; 101, substrate layer; 102, antibacterial surface layer; 2, second unit layer; 3, hot melt adhesive layer. DETAILED DESCRIPTION

[0023] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0024] In the description of the present application, it should be noted that, unless otherwise specified, “plurality” means more than two; the terms “upper”, “lower”, “left”, “right”, “inside”, “outside”, etc., indicating directions or positional relationships, are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present application.

[0025] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0026] Example

[0027] like Figure 1 , 2 As shown, the needle-punched nonwoven fabric for shoe lining in the embodiment includes a first unit layer 1, a second unit layer 2, and a hot-melt adhesive layer 3 bonded between the first unit layer 1 and the second unit layer 2; the hot-melt adhesive layer 3 has a through hole or a through groove running through the thickness direction, the first area of ​​the first unit layer 1 and the second unit layer 2 is arranged opposite to the through hole or the through groove, and the first area of ​​the first unit layer 1 and the second unit layer 2 is entangled through the puncture interlayer; the hot-melt adhesive layer 3 is bonded to the intra-layer entangled surface of the first unit layer 1 and the second unit layer 2.

[0028] The first unit layer 1 and the second unit layer 2 are mainly composed of polyester, nylon, etc. Intra-layer entanglement refers to the first unit layer 1 and the second unit layer 2 being entangled through a predetermined puncture on their respective production lines. It can be punctured and entangled in the first area only, or it can be uniform and defective entangled on the surface of the first unit layer 1 and the second unit layer 2. Inter-layer entanglement refers to the puncturing fibers of the first unit layer 1 piercing into the second unit layer 2, or the puncturing fibers of the second unit layer 2 piercing into the first unit layer 1. It can be understood that the intra-layer entanglement is performed before the hot melt adhesive layer 3 is arranged, and the inter-layer entanglement is performed after the hot melt adhesive layer 3 is arranged.

[0029] Optionally, the setting method of the hot melt adhesive layer 3 includes but is not limited to a production process of continuously introducing a hot melt adhesive film between the first unit layer 1 and the second unit layer 2, spraying hot melt adhesive powder on the first unit layer 1 and / or the second unit layer 2 and then compounding, and coating the first unit layer 1 and / or the second unit layer 2 with hot melt adhesive and then compounding.

[0030] like Figure 1 , 2 As shown, in some preferred embodiments, the hot melt adhesive layer 3 includes a plurality of hot melt adhesive strips parallel to each other, and the hot melt adhesive strips extend along a straight line within the extension plane of the first unit layer 1 .

[0031] Specifically, in combination with the continuous production of non-woven fabrics, the hot melt adhesive strips are extended along the length direction of the non-woven fabrics to facilitate the arrangement of the hot melt adhesive strips. The hot melt adhesive strips extend in a straight line direction, and the needles of the needle plate avoid the hot melt adhesive strips when puncturing between layers, ensuring that the distance between the interlayer entanglement puncture area and the side of the hot melt adhesive strip is controlled to be small.

[0032] In some preferred embodiments, the fiber density of the second unit layer 2 is greater than the fiber density of the first unit layer 1 , and the surface of the second unit layer 2 facing away from the first unit layer 1 is configured as a bonding reinforcement substrate.

[0033] The second unit layer 2 with a higher fiber density is bonded to a reinforcing substrate such as an upper material, making the soft upper tend to be flat; based on this, the first unit layer 1 is arranged close to the wearer's foot, which is conducive to enhancing the soft touch of the foot and improving the wearer's comfort.

[0034] In some preferred embodiments, the hot melt adhesive layer 3 is an elastomeric adhesive. The elastomeric adhesive includes but is not limited to silicone or polyurethane adhesive. The hot melt adhesive layer 3 has a rebound performance after being stretched and deformed, which matches the performance requirements of the soft upper and improves the soft touch in the thickness direction of the non-woven fabric. Both of the above aspects are conducive to further improving the comfort of the wearer.

[0035] like Figure 1 As shown, in some preferred embodiments, the hot melt adhesive strips are evenly spaced, and the spacing between adjacent hot melt adhesive strips is not less than the width of the hot melt adhesive strips.

[0036] Relative to the interval between the hot melt adhesive strips, the width of the hot melt adhesive strips is controlled to be smaller, thereby reducing the influence of the softness and elasticity of the hot melt adhesive at high and low temperatures on the wearing comfort.

[0037] In some preferred embodiments, the intra-layer entangled fiber density of the first unit layer 1 and the second unit layer 2 is smaller than the inter-layer entangled fiber density, and the peel strength of the inter-layer entangled structure is close to that of the bonding structure, ensuring the peel strength at the cutting edge at the inter-layer entanglement.

[0038] like Figure 4 As shown, in some preferred embodiments, the first unit layer 1 includes a laminated substrate layer 101 and an antibacterial surface layer 102, and the antibacterial surface layer 102 is entangled with antibacterial fibers. The antibacterial fibers include but are not limited to polylactic acid fibers and non-woven fabrics treated with organic and / or inorganic antibacterial agents.

[0039] The antibacterial surface layer 102 is disposed close to the wearer's foot surface, which is conducive to the effective and timely performance of its antibacterial function.

[0040] like Figure 5 As shown, in some other preferred embodiments, the hot melt adhesive layer 3 is composed of adhesive dots arranged in a rectangular array. As an alternative to the hot melt adhesive strip, the column direction of the rectangular array is consistent with the length direction of the continuously produced nonwoven fabric.

[0041] In some preferred embodiments, the spacing between the hot melt adhesive strips and the width of the hot melt adhesive strips are 5 to 15 mm. If the hot melt adhesive strips are too large, there will be obvious differences in the first area of ​​the non-woven fabric surface and the interlayer entanglement area, which is not conducive to maintaining the overall flatness of the shoe upper and will not cause obvious discomfort to the wearer's foot.

[0042] The second object of the utility model is to provide a shoe, comprising the needle-punched non-woven fabric for shoe lining.

[0043] It is understood that the needle-punched nonwoven fabric for shoe lining includes but is not limited to being used for upper reinforcement and eyelet reinforcement.

[0044] The production process of needle-punched nonwoven fabric for shoe lining includes the following steps:

[0045] S1: Arrange the fibers respectively to obtain the laying nets of the first unit layer 1 and the second unit layer 2;

[0046] S2: using a needle board to needle-punch the web to obtain a first unit layer 1 and a second unit layer 2 entangled in the layer; the area outside the first area is the interlayer entanglement puncture area, i.e., the second area, and the needle density of the needle board puncturing the first area is equal to or greater than the needle density of the needle board puncturing the first area;

[0047] S3: The hot melt adhesive is bonded between the first unit layer 1 and the second unit layer 2, and the hot melt adhesive strip is directly opposite to the first area along the thickness direction of the first unit layer 1, such as Figure 2 As shown;

[0048] S4: Puncture the second region to cause the first unit layer 1 and the second unit layer 2 to be entangled with each other.

[0049] The step of melting the hot melt adhesive may be performed between S3 and S4 or after S4, preferably between S3 and S4 (the obtained shoe lining needle-punched nonwoven fabric is as follows Figure 3 As shown), for example, a heated roller is used to roll the hot melt adhesive strip to the first area corresponding to the first area to avoid the high heat of the roller from deforming the fibers (such as nylon) in the second area.

[0050] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A needle-punched nonwoven fabric for shoe lining, characterized in that: It includes a first unit layer, a second unit layer, and a hot melt adhesive layer bonded between the first unit layer and the second unit layer; the hot melt adhesive layer has a through hole or a through groove running through the thickness direction, the first area of ​​the first unit layer and the second unit layer is arranged opposite to the through hole or the through groove, and the first area of ​​the first unit layer and the second unit layer is entangled through the puncture interlayer; the hot melt adhesive layer is bonded to the intra-layer entangled surface of the first unit layer and the second unit layer.

2. The needle-punched nonwoven fabric for shoe lining according to claim 1, characterized in that: The hot melt adhesive layer includes a plurality of hot melt adhesive strips parallel to each other, and the hot melt adhesive strips extend along a straight line within an extension plane of the first unit layer.

3. The needle-punched nonwoven fabric for shoe lining according to claim 1, characterized in that: The fiber density of the second unit layer is greater than the fiber density of the first unit layer, and the surface of the second unit layer facing away from the first unit layer is configured as a bonding reinforcement substrate.

4. The needle-punched nonwoven fabric for shoe lining according to claim 1, characterized in that: The hot melt adhesive layer is an elastomer adhesive.

5. The needle-punched nonwoven fabric for shoe lining according to claim 2, characterized in that: The hot melt adhesive strips are distributed at equal intervals, and the spacing between adjacent hot melt adhesive strips is not less than the width of the hot melt adhesive strips.

6. The needle-punched nonwoven fabric for shoe lining according to claim 1, characterized in that: The intra-layer entangled fiber density of each of the first unit layer and the second unit layer is smaller than the inter-layer entangled fiber density.

7. The needle-punched nonwoven fabric for shoe lining according to claim 3, characterized in that: The first unit layer includes a laminated substrate layer and an antibacterial surface layer, and the antibacterial surface layer is entangled with antibacterial fibers.

8. The needle-punched nonwoven fabric for shoe lining according to claim 1, characterized in that: The hot melt adhesive layer is composed of adhesive dots arranged in a rectangular array.

9. The needle-punched nonwoven fabric for shoe lining according to claim 5, characterized in that: The spacing between the hot melt adhesive strips and the width of the hot melt adhesive strips are 5 to 15 mm.

10. A shoe, characterized in that: The invention comprises the needle-punched nonwoven fabric for shoe lining according to any one of claims 1 to 9.

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