Double-layer non-woven fabric for down lining

Abstract

The double-layer non-woven fabric comprises a surface cloth layer and a base cloth layer which are sequentially arranged from outside to inside, the surface cloth layer comprises a protruding part and a concave part, the protruding part and the base cloth layer form a cavity, and the surface cloth layer and the base cloth layer are connected through fibers and form a pre-sewing area. The cavities are formed by the protruding portions formed by the surface cloth layer and the base cloth layer, the down filling space is formed between the protruding portions of the surface cloth layer and the down fabric on the outer layer of the lining, down cannot enter the outside due to the high-count and high-density down fabric on the outer layer, the concave portions are woven in a tight directional arrangement mode, the down cannot enter the base cloth layer, and the down filling space is formed. The sunken parts and the base cloth layer are connected in a cohesive mode due to friction of fibers and form a pre-sewing area, so that the down cannot get out of the sewing position, part of the down enters a cavity formed by the protruding parts and the base cloth layer, the down in the cavity gets out of the down filling space due to extrusion or beating to form circulation, and therefore the down is not reduced, and heat of the down is continuously kept all the time.

Description

Technical Field

[0001] The utility model relates to the field of textiles, and more particularly to a double-layer non-woven fabric for down lining. Background Art

[0002] The existing non-woven fabrics used for down linings have a loose structure. Although they make down jackets more breathable, they can cause down to leak through. This is particularly noticeable at the seams of the outer layer of the lining. Utility Model Content

[0003] The utility model aims to overcome the deficiencies of the above-mentioned prior art and provide a double-layer non-woven fabric for down lining, which is formed by laying fibers in different directional nets. The raised portion formed on the surface fabric layer forms a cavity with the base fabric layer, and a filling space is formed between the raised portion of the surface fabric layer and the down fabric of the outer layer of the lining. The down fabric of the outer layer adopts a high-count and high-density fabric, which prevents the down from drilling into the outside. When the down drills inward, the recessed portion adopts a tight directional arrangement weaving, which prevents the down from drilling out of the base fabric layer. The recessed portion and the base fabric layer are connected and connected due to friction between the fibers and form a pre-sewn area, which prevents the down from drilling through the recessed portion and the base fabric layer, thereby allowing the down to drill into the cavity formed by the raised portion and the base fabric layer. When the down in the cavity reaches a certain amount, it is squeezed or slapped and drilled out to form a filling space between the raised portion of the surface fabric layer and the down fabric of the outer layer of the lining, so that the down is not reduced and the down can always maintain heat.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model discloses a double-layer non-woven fabric for down lining, comprising a surface fabric layer and a base fabric layer arranged in sequence from outside to inside, the surface fabric layer comprising a raised portion and a recessed portion, the raised portion and the base fabric layer forming a cavity, the surface fabric layer and the base fabric layer being connected by fibers to form a pre-sewn area.

[0006] Furthermore, the raised portion has a diamond structure, and in the oblique 45-degree direction, the interval between two adjacent raised portions is 0.8mm-1mm, in the transverse direction, the interval between two adjacent raised portions is 1.6mm-2mm, and in the longitudinal direction, the interval between two adjacent raised portions is 1.6mm-2mm.

[0007] Furthermore, the raised portion is a triangular structure, and in the oblique direction, the interval between two adjacent raised portions is 0.8 mm to 1 mm, and in the longitudinal direction, the interval between two adjacent raised portions is also 0.8 mm to 1 mm.

[0008] Furthermore, each corner of the triangular structure of the protrusion is rounded, and the rounded corners of two adjacent protrusions are opposite to the curved surface of the protrusion.

[0009] Furthermore, the raised portion and the recessed portion are arranged every other portion, and the raised height of the raised portion is 2.5 mm to 4 mm.

[0010] Furthermore, the pre-sewn area is located on the recessed portion.

[0011] Furthermore, the surface fabric layer is formed by directional laying of polypropylene fibers.

[0012] Furthermore, the base fabric layer is formed by directional laying of ultrafine fibers at an angle α of 45°.

[0013] Furthermore, the double-layer non-woven fabric has a gram weight of 10 g / m^2-130 g / m^2.

[0014] The beneficial effects of the utility model are:

[0015] A double-layer non-woven fabric is formed by laying fibers in different directions, and a cavity is formed between the surface fabric layer and the base fabric layer, so that the down circulates between the non-woven fabric and the outer down fabric, so that the down will not be reduced, thereby allowing the down fabric to continuously maintain heat. In addition, a pre-sewn area is formed between the surface fabric layer and the base fabric layer due to the friction between the fibers, so that the subsequent combination of the non-woven fabric and the down fabric can be sewn through the pre-sewn area, which not only connects the surface fabric layer and the base fabric layer, but also reduces the down drilling phenomenon due to the tightness of the down between the fibers. The base fabric layer is woven with a tight directional arrangement, so that the fibers of the base fabric layer are tightly arranged, so that the down cannot drill out of the base fabric layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the structure of a double-layer non-woven fabric used for down lining in this embodiment;

[0017] Figure 2 A top view of a first embodiment of a double-layer non-woven fabric for down lining;

[0018] Figure 3 is a top view of a second embodiment of a double-layer non-woven fabric for down lining;

[0019] Figure 4 This is a top view of a base fabric layer of a double-layer non-woven fabric used for down lining in this embodiment.

[0020] Reference numerals: surface fabric layer 1 , raised portion 11 , recessed portion 12 , base fabric layer 2 , pre-sewn area 3 . DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] like Figure 1 —4, a double-layer non-woven fabric for down lining, comprising a surface fabric layer 1 and a base fabric layer 2 arranged in sequence from the outside to the inside, referring to Figure 4 The base fabric layer 2 is formed by directional laying of ultrafine fibers at an angle of α of 45°. The oblique laying method can not only effectively save raw materials, but also the non-woven fabric can be used at multiple angles through the laying angle, thereby increasing the application space. In addition, the fibers are laid at an angle of 45 degrees, which increases the stability and tensile strength of the non-woven fabric after it is webbed. Moreover, because the base fabric layer 2 is woven with ultrafine fibers, the ultrafine fibers have countless fine hairs and micropores. Therefore, the ultrafine fibers are woven to make the fiber hairs tightly adhere and rub against each other, thereby forming a compact non-woven fabric in the base fabric layer 2. Because the micropores in the ultrafine fibers make the base fabric layer 2 form a non-woven fabric that will not be airtight when combined with the down fabric.

[0023] The surface fabric layer 1 is formed with a convex portion 11 and a concave portion 12 by directional laying of polypropylene fibers, and a filling space is formed between the convex portion 11 and the outer layer of down fabric. Because the outer layer of down fabric adopts a high-count and high-density fabric, it effectively prevents the leakage of down, thereby locking the air and increasing the warmth retention of the down fabric. Because the high-count and high-density fabric of the outer layer effectively prevents the down from leaking, but the down will not be fixed. Therefore, when the down moves inward, the base fabric layer 2 forms a tight inner layer through the directional arrangement of the microfibers, thereby effectively preventing the down from drilling inward, and the space between the convex portion 11 and the base fabric layer 2 A cavity is formed between the raised portion 11 and the raised height of the raised portion 11 is 2.5mm-4mm. Preferably, the raised height of the raised portion 11 is 3.2mm. Therefore, the down will drill into the cavity through movement, and when the down in the cavity reaches a certain amount, part of it will drill out of the cavity after being squeezed or slapped. Because the raised portion 11 is located on the surface fabric layer 1, and the surface fabric layer 1 and the base fabric layer 2 are connected by fiber bonding friction, the down cannot pass through, so that the down circulates in the cavity and the filling space formed between the raised portion 11 and the outer layer of the down fabric, but does not reduce the loss of down, thereby continuously maintaining warmth.

[0024] The surface fabric layer 1 and the base fabric layer 2 are connected by fibers and form a pre-sewn area 3, and the pre-sewn area 3 is located on the recessed portion 12. When the surface fabric layer 1 and the base fabric layer 2 form a double-layer non-woven fabric and are combined with the outer down fabric, sewing is performed through the pre-sewn area 3, so that the cavity formed between the raised portion 11 of the surface fabric layer 1 and the base fabric layer 2 will not be destroyed, thereby allowing the down to circulate, and because the two layers are connected by fiber bonding friction between the recessed portion 12 and the base fabric layer 2, sewing at the pre-sewn area 3 can make the double-layer non-woven fabric and the outer down fabric more tightly connected, and because of the fiber bonding friction between the recessed portion 12 and the base fabric layer 2, the tightness between the fibers is increased after sewing, so that the down cannot drill out from the sewing, and the distance between the sewing threads will not increase due to repeated washing or use due to the tightness of the connection between the fibers, thereby preventing the down from drilling out from the stitching.

[0025] The double-layer non-woven fabric formed by the surface fabric layer 1 and the base fabric layer 2 has a gram weight of 10g / m^2-130g / m^2. Preferably, the double-layer non-woven fabric has a gram weight of 102g / m^2, so that the double-layer non-woven fabric can be used as the lining of the outer down fabric without affecting the breathability due to being too thick, or affecting the anti-down penetration property due to being too thin.

[0026] Example 1:

[0027] Reference Figure 2The raised portion 11 is a diamond structure, and the raised portion 11 and the recessed portion 12 are arranged 1 at a distance of 1. In the oblique 45-degree direction, the interval between two adjacent raised portions 11 is 0.8mm-1mm. Preferably, in the oblique 45-degree direction, the interval between two adjacent raised portions 11 is 1mm, so the width of the recessed portion 12 is 1mm. In the transverse direction, the interval between two adjacent raised portions 11 is 1.6mm-2mm. Preferably, the interval between two adjacent raised portions 11 is 2mm, so the width of the recessed portion 12 is 2mm. In the longitudinal direction, the interval between two adjacent raised portions 11 is 1.6mm-2mm. Preferably, in the longitudinal direction, the interval between two adjacent raised portions 11 is 2mm, so the width of the recessed portion 12 is 2mm. When a filling is formed between the raised portion 11 and the outer down fabric, When the space is full, the raised portion 11 does not bulge due to the down filling. However, when in use, the down drills into the cavity formed by the raised portion 11 and the base fabric layer 2 due to the movement of the down and the friction between the down, so that the raised portion 11 bulges. Because the width of the recessed portion 12 in the oblique 45-degree direction is tighter than that in the transverse or longitudinal direction, more down enters the raised portion 11 in the oblique 45-degree direction than in the transverse or longitudinal direction. Moreover, when the cavity formed between the raised portion 11 and the base fabric layer 2 reaches a certain amount of down, due to the squeezing between the down or the beating of external force, the down circulating between the raised portion 11 and the filling space in the oblique 45-degree direction will also be relatively more than that circulating in the transverse or longitudinal direction, thereby not reducing the loss of down, so that the down circulation continues to maintain warmth. The pre-sewn area 3 is located on the recessed portion 12 and is a straight line, and forms an intersection between two adjacent raised portions 11 in the transverse direction and two adjacent raised portions 11 in the longitudinal direction, thereby increasing fiber bonding and reducing the down from drilling out from between the sewing threads. After sewing, the intersection of the sewing threads makes the non-woven fabric and the outer down fabric more tightly connected.

[0028] Example 2:

[0029] Reference Figure 3The raised portion 11 is a triangular structure, and the raised portion 11 and the recessed portion 12 are arranged 1 at a time. In the oblique direction, the interval between two adjacent raised portions 11 is 0.8mm-1mm. Preferably, in the oblique direction, the interval between two adjacent raised portions 11 is 1mm, so the width of the recessed portion 12 is 1mm. In the longitudinal direction, the interval between two adjacent raised portions 11 is also 0.8mm-1mm. Preferably, in the longitudinal direction, the interval between two adjacent raised portions 11 is also 1mm, so the width of the recessed portion 12 is 1mm. Therefore, the down is drilled into the cavity formed by the raised portion 11 and the base fabric layer 2, so that the raised portion 11 protrudes, but due to The raised portion 11 is a triangular structure, and the width of the recessed portion 12 in the oblique direction is the same as that in the longitudinal direction. Each corner of the triangular structure of the raised portion 11 is rounded, and the rounded corners of two adjacent raised portions 11 are opposite to the curved surface of the raised portion 11. Therefore, the down entering the raised portion 11 is more uniform when filling the raised portion 11. When the cavity formed between the raised portion 11 and the base fabric layer 2 reaches a certain amount of down, the down circulating between the raised portion 11 and the filling space is also more uniform due to the squeezing between the down or the beating of external force. Therefore, without reducing the loss of down, the down circulation is more uniform, and the warmth retention is provided more uniformly. The pre-sewn area 3 is located on the recessed portion 12, and the pre-sewn area 3 is a curve, and forms an intersection at the center of the three adjacent rounded corners, thereby forming a curved sewing line between the pre-sewn area 3 and the outer down fabric, so that the non-woven fabric and the outer down fabric are connected to form a curve, thereby reinforcing the friction between the fibers of the non-woven fabrics in a curved shape, thereby making the connection between the double-layer non-woven fabrics tighter and preventing the down from drilling out.

[0030] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A double-layer non-woven fabric for down lining, characterized in that: The invention comprises a surface fabric layer (1) and a base fabric layer (2) arranged in sequence from outside to inside, wherein the surface fabric layer (1) comprises a raised portion (11) and a recessed portion (12), wherein the raised portion (11) and the base fabric layer (2) form a cavity, wherein the surface fabric layer (1) and the base fabric layer (2) are connected by fibers and form a pre-sewn area (3), wherein the raised portion (11) is a triangular structure, wherein each corner of the triangular structure of the raised portion (11) is rounded, and the rounded corners of two adjacent raised portions (11) are opposite to the curved surface of the raised portion (11), wherein the raised portion (11) and the recessed portion (12) are arranged in a 1-to-1 arrangement, and the pre-sewn area (3) is located on the recessed portion (12), wherein the surface fabric layer (1) is formed by directional laying of polypropylene fibers, and wherein the base fabric layer (2) is formed by directional laying of ultrafine fibers at an angle α of 45°.

2. The double-layer non-woven fabric for down lining according to claim 1, characterized in that: In the oblique direction, the interval between two adjacent protrusions (11) is 0.8 mm to 1 mm, and in the longitudinal direction, the interval between two adjacent protrusions (11) is also 0.8 mm to 1 mm.

3. The double-layer non-woven fabric for down lining according to claim 1, characterized in that: The raised portion (11) has a raised height of 2.5 mm to 4 mm.

4. The double-layer non-woven fabric for down lining according to claim 1, characterized in that: The double-layer non-woven fabric has a gram weight of 10 g / m^2-130 g / m^2.

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