Warm-keeping non-woven fabric

Abstract

The utility model discloses a warm-keeping non-woven fabric, which belongs to the technical field of non-woven fabrics and comprises a warm-keeping layer, the warm-keeping layer is provided with a plurality of air storage cavities arranged in an array mode, two sides of the warm-keeping layer are fixedly connected with surface layers, the end faces, attached to the air storage cavities, of the surface layers are fixedly provided with a plurality of sealing strips arranged at intervals, and the sealing strips are formed by laying a plurality of profiled fibers. The sealing strips on the two surface layers are arranged in a staggered mode. According to the warm-keeping non-woven fabric, the flow speed of air passing through the air storage cavity is effectively reduced through the complex gap shape formed after the special-shaped fibers are stacked, and the warm-keeping performance of the non-woven fabric is effectively improved while the air permeability of the non-woven fabric is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of non-woven fabrics, in particular to thermal insulation non-woven fabrics. Background Art

[0002] The drawstring fabric is a kind of spunbond needle-punched non-woven fabric. It uses needle-punched non-woven fabric as the base layer, and is usually compounded with spunbond non-woven fabric on one or both sides of the base layer by hot rolling or needle punching. It is mainly used in the middle layer of the shoe body, and is usually composed of a woven cloth wrapped sponge and a drawstring fabric to form the shoe body.

[0003] In the prior art of lace cloth, the base layer is usually made of 100% polyester staple fibers which are processed by needle punching after being washed and combed, and the lace cloth has good air permeability.

[0004] However, even if the needle-punching density of this kind of drawstring cloth is increased during the needle-punching process, the heat retention rate of the drawstring cloth is still low, resulting in poor thermal insulation performance of the drawstring cloth.

[0005] Therefore, a technical solution of nonwoven fabric with thermal insulation performance is proposed. Utility Model Content

[0006] The utility model aims to solve the problems in the prior art and provides a thermal insulation nonwoven fabric.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a thermal insulation non-woven fabric, including a thermal insulation layer, the thermal insulation layer is provided with a plurality of air storage cavities arranged in an array, both sides of the thermal insulation layer are fixedly connected with a surface layer, the end surface of the surface layer that is in contact with the air storage cavity is fixedly provided with a plurality of spaced closing strips, the closing strips are formed by laying a plurality of special-shaped fibers, and the plurality of closing strips on the two surface layers are staggered.

[0008] The utility model is further configured as follows: the thermal insulation layer comprises a base material with honeycomb openings, and the base material is made of a plastic soft film material.

[0009] The utility model is further configured as follows: the closing strip does not completely cover one side opening of any air storage cavity, and the gap between adjacent closing strips is less than or equal to the width of the closing strip, and the end surface of the closing strip covering the air storage cavity has a slow flow opening attached to the surface layer.

[0010] The utility model is further configured as follows: the closing strip is formed by laying a plurality of polyester filaments, and the cross section of the polyester filaments is in a Y-shaped structure.

[0011] The utility model is further configured as follows: the closing strip is connected to the surface layer by needle puncture, a plurality of the closing strips are embedded in the surface layer, and the end surface of the surface layer embedded with the closing strip is arranged flush with the outer end surfaces of the plurality of closing strips.

[0012] The utility model is further configured as follows: the thickness of the surface layer is 2 to 3 times the thickness of the sealing strip.

[0013] The utility model is further configured as follows: the surface layer is formed by needle punching polyester staple fibers.

[0014] In summary, the utility model has the following beneficial effects: the complex gap shape after stacking a number of special-shaped fibers effectively slows down the flow rate of gas through the gas storage cavity, while ensuring the air permeability of the non-woven fabric, the warmth retention of the non-woven fabric is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0017] Figure 3 It is a schematic diagram of the structure of the thermal insulation layer and the sealing strip of the utility model.

[0018] In the figure: 1, surface layer; 2, thermal insulation layer; 21, air storage cavity; 211, slow flow port; 3, closing strip; 4, polyester filament. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 invention. Obviously, the embodiments described are only some embodiments of the present invention, rather than all embodiments.

[0020] Warm non-woven fabrics, such as Figure 1As shown, it includes a thermal insulation layer 2, which is provided with a plurality of air storage cavities 21 arranged in an array. The thermal insulation layer 2 is fixedly connected with a surface layer 1 on both sides. The end surface of the surface layer 1 that fits the air storage cavity 21 is fixedly provided with a plurality of spaced closing strips 3, and the closing strips 3 are formed by laying a plurality of special-shaped fibers. The plurality of closing strips 3 on the two surface layers 1 are arranged alternately. When the gas passes through the closing strips 3 formed by laying the special-shaped fibers, the speed is slowed down, so that the hot air can be better preserved in the closing strips 3. In this specific embodiment, the thermal insulation layer 2 includes a substrate with honeycomb openings, and the substrate is made of a plastic soft film material. The plastic soft film has good air tightness in the cloth direction, which effectively reduces the flow of gas in adjacent air storage cavities 21. The surface layer 1 is formed by needle-punching polyester staple fibers, and the closing strips 3 are formed by laying a plurality of polyester filaments 4. The cross-section of the polyester filaments 4 is a Y-shaped structure.

[0021] Practical effect: The complex gap shape formed by stacking a number of special-shaped fibers can effectively slow down the flow rate of gas through the gas storage cavity 21, while ensuring the air permeability of the non-woven fabric, and effectively improve the warmth retention of the non-woven fabric.

[0022] like Figure 2 as well as Figure 3 As shown, specifically, the closing strip 3 does not completely cover the opening of one side of any gas storage cavity 21, and the gap between adjacent closing strips 3 is less than or equal to the width of the closing strip 3. The end surface of the closing strip 3 covering the gas storage cavity 21 is provided with a slow flow opening 211 attached to the surface layer 1. The setting of the slow flow opening 211 enables the gas to flow through the gas storage cavity 21. The slow flow opening 211 is driven by the air slowly flowing out along the slow flow opening 211, effectively reducing the reverse flow of the gas in the gas storage cavity 21 due to being completely blocked by the closing strip 3, resulting in more gas being blocked from passing through the gas storage cavity 21, so that the gas maintains a relatively uniform flow rate;

[0023] In order to make the surface layer 1 and the thermal insulation layer 2 fit more closely and reduce the overall thickness of the non-woven fabric, the closing strip 3 is connected to the surface layer 1 by needle puncture, and a number of closing strips 3 are embedded in the surface layer 1, and the end surface of the surface layer 1 embedded with the closing strip 3 is arranged flush with the outer end surfaces of the number of closing strips 3. In order to ensure the structural stability of the closing strip 3 when using the shoe body made of the non-woven fabric, the thickness of the surface layer 1 is 2 to 3 times the thickness of the closing strip 3, that is, when the shoe body is in contact with foreign objects and brushed, the surface layer 1 is used to provide better protection for the closing strip 3.

[0024] 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.

[0025] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. Warm non-woven fabric, characterized by: It comprises a thermal insulation layer, which is provided with a plurality of air storage cavities arranged in an array, both sides of the thermal insulation layer are fixedly connected with a surface layer, the end surface of the surface layer which is in contact with the air storage cavity is fixedly provided with a plurality of spaced closing strips, the closing strips are formed by laying a plurality of special-shaped fibers, and the plurality of closing strips on the two surface layers are arranged in an alternating manner.

2. The thermal nonwoven fabric according to claim 1, characterized in that: The thermal insulation layer comprises a base material with honeycomb openings, and the base material is made of a plastic soft film material.

3. The thermal nonwoven fabric according to claim 2, characterized in that: The sealing strip does not completely cover one side opening of any air storage cavity, and the gap between adjacent sealing strips is less than or equal to the width of the sealing strip. The end surface of the sealing strip covering the air storage cavity has a slow flow opening attached to the surface layer.

4. The thermal nonwoven fabric according to claim 1, characterized in that: The sealing strip is formed by laying out a plurality of polyester filaments, and the cross section of the polyester filaments is in a Y-shaped structure.

5. The thermal nonwoven fabric according to claim 4, characterized in that: The sealing strip is connected to the surface layer by needle puncture, a plurality of the sealing strips are embedded in the surface layer, and the end surface of the surface layer embedded with the sealing strip is arranged flush with the outer end surfaces of the plurality of sealing strips.

6. The thermal nonwoven fabric according to claim 5, characterized in that: The thickness of the surface layer is 2 to 3 times the thickness of the sealing strip.

7. The thermal nonwoven fabric according to claim 5, characterized in that: The surface layer is formed by needle punching polyester staple fibers.

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