Functional flame-retardant fabric

Abstract

The utility model belongs to the technical field of textile fabrics, and particularly discloses a functional flame-retardant fabric which comprises a double-layer functional fabric, a nanometer micropore flame-retardant film and a knitted flame-retardant fabric, and core filling yarns are arranged in the double-layer functional fabric; the double-layer functional fabric, the nano microporous flame-retardant film and the knitted flame-retardant fabric are sequentially subjected to hot press molding to form the functional flame-retardant fabric. The double-layer structure is adopted, the double-layer structure, the nanoscale film and the knitted flame-retardant fabric are formed through hot pressing, the flame-retardant effect is achieved, pure flame-retardant viscose yarn is introduced into the inner layer of the double-layer functional fabric in a core adding mode, and it is guaranteed that a certain thickness exists between the double-layer functional fabric; the fabric has the functions of wind resistance, water resistance, warm keeping, moisture permeability, antibiosis and the like, and the fabric has good wearing comfort.

Description

Technical Field

[0001] The utility model belongs to the technical field of textile fabrics, and particularly relates to a functional flame-retardant fabric. Background Art

[0002] Multifunctional flame retardant fabrics have more than two functional protective fabrics such as fireproof, anti-static, acid and alkali proof, metal proof, oil and water proof, and UV proof. The "Personal Protective Equipment Equipment Specification" standard has made detailed classifications and descriptions of the types of operations, possible accidents or injuries, and applicable personal protective equipment in various industries such as petroleum, chemical, natural gas, metallurgy, nonferrous metals, and coal mines. Flame retardant functional fabrics are gradually becoming popular in the petroleum, chemical, and power industries, and the anti-static performance of the fabrics is required to meet

[0003] GB12014-2019 standard, and the flame retardant performance meets the GB8965.1-2020 standard.

[0004] Flame-retardant fabrics are divided into post-finishing flame-retardant and intrinsic flame-retardant. Post-finishing flame-retardant is mainly based on cotton or polyester-cotton. Although this type of fabric can meet the flame-retardant and anti-static standards, it will be seriously thermally decomposed after long-term exposure to high temperature, and the post-finishing flame retardant is not resistant to washing. After multiple washings, the flame retardant performance decreases; while the intrinsic flame retardant is mainly achieved through intrinsic flame-retardant materials. The characteristics of its products are that the fabrics are permanently flame-retardant, but the disadvantage is that the cost is relatively high. Therefore, many domestic companies use aramid and flame-retardant viscose, nitrile chlorofiber and other intrinsic flame-retardant fibers to develop flame-retardant products. Due to the addition of flame-retardant viscose, the products have a soft feel and good wearing comfort. They have been widely used in the petrochemical industry. Frontline workers have new requirements for their clothing, especially in cold areas in autumn and winter, and they need protective clothing with warmth, antibacterial and comfort.

[0005] The flame retardant and warmth-keeping properties of existing fabrics are mainly achieved by adding flame retardant lining or warmth-keeping flakes to the inner layer.

[0006] However, this method increases the individual weight of the clothing and makes it heavy to wear, which affects work. Secondly, increasing the weight of the fabric increases the density of the fabric. By making the flame-retardant fabric fleece, the porosity of the fabric is reduced and the thermal insulation performance of the fabric is improved. However, when facing severe cold wind, the thermal insulation performance of this type of fabric is insufficient, and the cold wind can easily pass through the gaps in the fabric to exchange heat with the human body. Utility Model Content

[0007] The purpose of the utility model is to overcome the defects in the prior art and provide a functional flame retardant fabric.

[0008] The utility model provides a functional flame-retardant fabric, comprising a double-layer functional fabric, a nano-microporous flame-retardant film and a knitted flame-retardant fabric, wherein core-filling yarn is arranged inside the double-layer functional fabric;

[0009] The double-layer functional fabric, the nano-microporous flame-retardant film and the knitted flame-retardant fabric are hot-pressed in sequence to form a functional flame-retardant fabric.

[0010] A further solution is that the surface fabric yarn count of the double-layer functional fabric is 37 s / 2-45 s / 2, the inner fabric yarn count is 40 s / 2-50 s / 2; the yarn count of knitted flame retardant fabric is 32s-50s.

[0011] A further solution is that the double-layer functional fabric is interwoven by surface yarn, inner yarn and binding yarn;

[0012] The surface yarn adopts 2 / 1 weave, the inner yarn adopts plain weave, and the binding yarn adopts two-up-one-down binding mode to interweave with the surface yarn and the inner yarn.

[0013] A further solution is that the ratio of the warp and weft density of the surface layer to the warp and weft density of the inner layer of the double-layer functional fabric is 2:1.

[0014] A further solution is that conductive yarns are arranged between the surface warp yarns and the inner warp yarns and between the surface weft yarns and the inner weft yarns of the double-layer functional fabric.

[0015] A further solution is that the conductive yarn is processed by 37 s / 2—45 s / 2 is twisted with 20D polyester-based conductive yarn, and the twist is 12.5 twists / inch.

[0016] A further solution is that the surface warp yarns and the inner warp yarns are arranged cyclically in the following order: 2 surface warp yarns, 1 inner warp yarn, 3 surface warp yarns, 1 inner warp yarn, 1 conductive yarn, 1 inner warp yarn, 2 surface warp yarns, 1 inner warp yarn, 4 surface warp yarns, 2 inner warp yarns, 1 surface warp yarn, 1 inner warp yarn, and 1 binding yarn;

[0017] The surface weft yarn and the inner weft yarn are arranged according to 2 surface weft yarns, 2 inner weft yarns, 3 surface weft yarns, 2 inner weft yarns, 2 surface weft yarns, 1 inner weft yarn, 1 conductive yarn, and 1 bonding yarn. Four core-filling yarns are introduced between two adjacent weft bonding yarns. The core-filling yarn is pure flame-retardant viscose yarn with a yarn count of 22s, and the four pure flame-retardant viscose yarns are not interwoven with the surface yarns and the inner yarns.

[0018] A further solution is that the double-layer functional fabric has a gram weight of 180-230 g / m 2 .

[0019] A further solution is that the knitted flame retardant fabric adopts a single-sided rib structure, and the fabric weight is 80-150gsm.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] The utility model adopts a double-layer structure in structure, and the double-layer structure, the nano-scale film and the knitted flame-retardant fabric are formed by hot pressing to achieve a flame-retardant effect, and after the surface and inner layers of the double-layer functional fabric are interwoven, the surface layer is dense and the inner layer is relatively sparse, and pure flame-retardant viscose yarn is introduced into the inner layer of the double-layer functional fabric by adding a core to ensure that the double-layer functional fabric has a certain thickness, and more static air is retained inside, and the double-layer functional fabric, the nano-microporous flame-retardant film and the knitted fabric are bonded together by hot pressing to achieve the functions of the fabric such as windproof, waterproof, warm, moisture-permeable and antibacterial, so that the fabric has better wearing comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The following drawings are only used to illustrate and explain the present invention, and are not intended to limit the scope of the present invention, wherein:

[0023] Figure 1 : A schematic diagram of the front structure of the utility model;

[0024] Figure 2 : Schematic diagram of the side structure of the utility model;

[0025] In the figure: 1, surface warp yarn; 2, surface weft yarn, 3, conductive yarn; 4, core filling yarn; 5, binding yarn; 6, inner warp yarn; 7, inner weft yarn; 8, nano-microporous flame retardant film; 9, single-sided rib knitted fabric. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution, design method and advantages of the utility model clearer, the utility model is further described in detail through specific embodiments in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0027] The utility model provides a functional flame-retardant fabric, including a double-layer functional fabric, a nano-microporous flame-retardant film 8 and a knitted flame-retardant fabric, wherein a core-filling yarn 4 is arranged inside the double-layer functional fabric to ensure that the double-layer functional fabric has a certain thickness, while retaining more static air inside; the ratio of the surface warp and weft density of the double-layer functional fabric to the inner warp and weft density is 2:1, and the double-layer functional fabric, the nano-microporous flame-retardant film 8 and the knitted flame-retardant fabric are hot-pressed in sequence to form a functional flame-retardant fabric, so that the fabric has better wearing comfort.

[0028] In order to further improve the antibacterial properties of the fabric, an intrinsic antibacterial material is introduced. By mixing flame retardant materials with non-flame retardant materials, the flame retardancy of the fabric is achieved, and the permanent antibacterial, moisture absorption and perspiration properties of the fabric are also achieved. Specifically, in the double-layer functional fabric, the surface yarn can be made of aramid 1313 mixed with flame retardant viscose and conductive fiber, with aramid 1313 accounting for 40%-60%, flame retardant viscose accounting for 30%-50%, and the sum of the mass percentages of each fiber being 100%; the inner layer yarn is made of flame retardant viscose, Tencel, and aramid 1313, with flame retardant viscose accounting for 40-55%, Tencel accounting for 15-25%, and aramid 1313 accounting for 28-38%, and the sum of the mass percentages of each fiber being 100%. Knitted flame retardant fabrics use yarns with good flame retardant effects. The fibers in the yarns can be flame retardant viscose, viscose-based wormwood fibers, and nitrile chlorofiber fibers. Among them, flame retardant viscose fibers account for 30-45%, viscose-based wormwood fibers account for 18-27%, and nitrile chlorofiber fibers account for 30-50%, and the sum of the mass percentages of each fiber is 100%.

[0029] Furthermore, the surface yarn count of the double-layer functional fabric is 37 s / 2-45 s / 2, the inner fabric yarn count is 40 s / 2-50 s / 2; the yarn count of knitted flame retardant fabric is 32s-50s.

[0030] Furthermore, conductive yarn 3 is arranged between the surface warp yarn 1 and the inner warp yarn 6 and between the surface weft yarn 2 and the inner weft yarn 7 of the double-layer functional fabric. The conductive yarn 3 is made of the surface yarn material. The processing method of the conductive yarn 3 is 37 s / 2—45 s / 2 is twisted with 20D polyester-based conductive yarn, and the twist is 12.5 twists / inch.

[0031] Furthermore, the surface fabric of the double-layer functional fabric adopts a 2 / 1 structure, the inner layer adopts a plain weave, and the binding yarn 5 adopts a 1 / 2 structure; wherein the arrangement order of the surface warp yarn 1 and the inner warp yarn 6 is 2 surface yarns, 1 inner yarn, 3 surface yarns, 1 inner yarn, 1 conductive yarn 3, 1 inner yarn, 2 surface yarns, 1 inner yarn, 4 surface yarns, 2 inner yarns, 1 surface yarn, 1 inner yarn, 1 surface binding yarn 5, this is a cycle; the surface weft yarn 2 and the inner weft yarn 7 are arranged according to 2 surface yarns, 2 inner yarns, 3 surface yarns, 2 inner yarns, 2 surface yarns, 1 inner yarn, 1 conductive yarn 3, and 1 surface bonding yarn 5. Secondly, 4 core-filling yarns 4 are introduced between two adjacent weft bonding yarns 5, and the core-filling yarn 4 is pure flame-retardant viscose yarn with a yarn count of 22s, and the 4 pure flame-retardant viscose yarns are not interwoven with the surface yarn and the inner yarn.

[0032] In the above, the double-layer functional fabric has a weight of 180-230g / m 2 . The knitted flame retardant fabric uses a single-sided ribbed knitted fabric 9 with a fabric weight of 80-150gsm. The double-layer functional fabric is woven on a double-weaving shaft loom. After weaving, the grey fabric is desized, dyed, waterproofed and stretched to form a finished product. Among them, the stretching and setting temperature is 185°C. The knitted flame retardant fabric is washed, stretched, dyed and set for use. The back of the double-layer functional fabric is hot-pressed with a nano-microporous flame retardant film 8 and a knitted flame retardant fabric at 190°C through a flame retardant adhesive to form a functional flame retardant fabric.

[0033] Example 1

[0034] like Figure 1 and Figure 2 As shown, this embodiment provides a functional flame-retardant fabric. In this embodiment, the surface yarn of the double-layer functional fabric is composed of aramid 1313 and flame-retardant viscose, wherein aramid 1313 accounts for 52% and flame-retardant viscose accounts for 48%. The inner yarn of the double-layer functional fabric accounts for 42% of flame-retardant viscose, 20% of Tencel, and aramid 1313 accounts for 38%. The surface yarn count is 40 s / 2, the inner layer yarn count is 45 s / 2. Conductive yarn 3 is arranged between the surface warp yarn 1 and the inner warp yarn 6 of the double-layer functional fabric and between the surface weft yarn 2 and the inner weft yarn 7. In this embodiment, the conductive yarn 3 is 40 s / 2 yarn is twisted with 20D polyester-based conductive yarn, with a twist of 12.5 twists / inch. The unit area mass of the double-layer functional fabric is 230gsm, and the warp yarn arrangement of the surface and inner layers is: 2 surface warp yarns 1, 1 inner warp yarn 6, 3 surface warp yarns 1, 1 inner warp yarn 6, 1 conductive yarn 3, 1 inner warp yarn 6, 2 surface warp yarns 1, 1 inner warp yarn 6, 4 surface warp yarns 1, 2 inner warp yarns 6, 1 surface warp yarn 1, 1 inner warp yarn 6, 1 binding yarn 5; surface and inner weft yarns 7 The arrangement is: 2 surface weft yarns 2, 2 inner weft yarns 7, 3 surface weft yarns 2, 2 inner weft yarns 7, 2 surface weft yarns 2, 1 inner weft yarn 7, 1 conductive yarn 3, 1 bonding yarn 5, and a core-filling yarn 4 is introduced after every 3 wefts, and the core-filling yarn 4 is 22s pure flame-retardant viscose yarn; after being drawn through the heddle and reed, it is woven on the rapier double weaving shaft; then the grey cloth is desized, dyed, waterproofed, and baked at 185℃ for use. The raw materials of the knitted flame-retardant fabric yarn are flame-retardant viscose fiber accounting for 35%, viscose-based wormwood fiber accounting for 20%, and acrylic fiber accounting for 45%. The yarn count is 40s, and single-sided rib knitted fabric 9 is used, with a gram weight of 110g / m 2 The knitted flame retardant fabric is washed, stenter-dyed and finalized for use. The back of the double-layer functional fabric is hot-pressed with the nano-microporous flame retardant film 8 and the knitted flame retardant fabric at 190° C. through a flame retardant adhesive to form a functional flame retardant fabric.

[0035] Example 2

[0036] like Figure 1 and Figure 2 As shown, this embodiment provides a functional flame-retardant fabric. In this embodiment, the surface yarn of the double-layer functional fabric is composed of aramid 1313 and flame-retardant viscose, wherein aramid 1313 accounts for 60% and flame-retardant viscose accounts for 40%. The inner yarn of the double-layer functional fabric accounts for 55% of flame-retardant viscose, 15% of Tencel, and 30% of aramid 1313. The surface yarn count is 45 s / 2, the inner yarn count is 50 s / 2. Conductive yarn 3 is arranged between the surface warp yarn 1 and the inner warp yarn 6 of the double-layer functional fabric and between the surface weft yarn 2 and the inner weft yarn 7. In this embodiment, the conductive yarn 3 is 45 s / 2 yarn is twisted with 20D polyester-based conductive yarn, with a twist of 12.5 twists / inch. The unit area mass of the double-layer functional fabric is 210gsm, and the warp yarn arrangement of the outer and inner layers is: 2 outer warp yarns 1, 1 inner warp yarn 6, 3 outer warp yarns 1, 1 inner warp yarn 6, 1 conductive yarn 3, 1 inner warp yarn 6, 2 outer warp yarns 1, 1 inner warp yarn 6, 4 outer warp yarns 1, 2 inner warp yarns 6, 1 outer warp yarn 1, 1 inner warp yarn 6, 1 binding yarn 5; outer and inner weft yarns 7 The arrangement is: 2 surface weft yarns 2, 2 inner weft yarns 7, 3 surface weft yarns 2, 2 inner weft yarns 7, 2 surface weft yarns 2, 1 inner weft yarn 7, 1 conductive yarn 3, 1 bonding yarn 5, and a core-filling yarn 4 is introduced after every 3 wefts, and the core-filling yarn 4 is 22s pure flame-retardant viscose yarn; after being drawn through the heddle and reed, it is woven on the rapier double weaving shaft; then the grey cloth is desized, dyed, waterproofed, and baked at 185℃ for use. The raw materials of the knitted flame-retardant fabric yarn are flame-retardant viscose fiber accounting for 43%, viscose-based wormwood fiber accounting for 27%, and acrylic fiber accounting for 30%. The yarn count is 50s, and single-sided rib knitted fabric 9 is used, with a gram weight of 90g / m 2 The knitted flame retardant fabric is washed, stenter-dyed and finalized for use. The back of the double-layer functional fabric is hot-pressed with the nano-microporous flame retardant film 8 and the knitted flame retardant fabric at 190° C. through a flame retardant adhesive to form a functional flame retardant fabric.

[0037] Example 3

[0038] like Figure 1 and Figure 2 As shown, this embodiment provides a functional flame-retardant fabric. In this embodiment, the surface yarn of the double-layer functional fabric is composed of aramid 1313 and flame-retardant viscose, wherein aramid 1313 accounts for 50% and flame-retardant viscose accounts for 50%. The inner yarn of the double-layer functional fabric accounts for 47% of flame-retardant viscose, 25% of Tencel, and 28% of aramid 1313. The surface yarn count is 42 s / 2, the inner yarn count is 44 s / 2. Conductive yarn 3 is arranged between the surface warp yarn 1 and the inner warp yarn 6 of the double-layer functional fabric and between the surface weft yarn 2 and the inner weft yarn 7. In this embodiment, the conductive yarn 3 is 42 s / 2 yarn is twisted with 20D polyester-based conductive yarn, with a twist of 12.5 twists / inch. The unit area mass of the double-layer functional fabric is 220gsm, and the warp yarn arrangement of the surface and inner layers is: 2 surface warp yarns 1, 1 inner warp yarn 6, 3 surface warp yarns 1, 1 inner warp yarn 6, 1 conductive yarn 3, 1 inner warp yarn 6, 2 surface warp yarns 1, 1 inner warp yarn 6, 4 surface warp yarns 1, 2 inner warp yarns 6, 1 surface warp yarn 1, 1 inner warp yarn 6, 1 binding yarn 5; surface and inner weft yarns 7 The arrangement is: 2 surface weft yarns 2, 2 inner weft yarns 7, 3 surface weft yarns 2, 2 inner weft yarns 7, 2 surface weft yarns 2, 1 inner weft yarn 7, 1 conductive yarn 3, 1 bonding yarn 5, and a core-filling yarn 4 is introduced after every 3 wefts, and the core-filling yarn 4 is 22s pure flame-retardant viscose yarn; after being drawn through the heddle and reed, it is woven on the rapier double weaving shaft; then the grey cloth is desized, dyed, waterproofed, and baked at 185℃ for use. The raw materials of the knitted flame-retardant fabric yarn are 40% flame-retardant viscose fiber, 25% viscose-based wormwood fiber, 35% nitrile chlorofiber fiber, yarn count 45s, single-sided rib knitted fabric 9, and gram weight 140g / m 2 The knitted flame retardant fabric is washed, stenter-dyed and finalized for use. The back of the double-layer functional fabric is hot-pressed with the nano-microporous flame retardant film 8 and the knitted flame retardant fabric at 190° C. through a flame retardant adhesive to form a functional flame retardant fabric.

[0039] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A functional flame retardant fabric, characterized in that: It comprises a double-layer functional fabric, a nano-microporous flame-retardant film and a knitted flame-retardant fabric, wherein a core-filling yarn is arranged inside the double-layer functional fabric; The double-layer functional fabric, the nano-microporous flame-retardant film and the knitted flame-retardant fabric are hot-pressed in sequence to form a functional flame-retardant fabric.

2. The functional flame-retardant fabric according to claim 1, characterized in that: The surface fabric yarn count of the double-layer functional fabric is 37 s / 2-45 s / 2, the inner fabric yarn count is 40 s / 2-50 s / 2; the yarn count of knitted flame retardant fabric is 32s-50s.

3. The functional flame-retardant fabric according to claim 2, characterized in that: The double-layer functional fabric is interwoven with surface yarn, inner yarn and binding yarn; The surface yarn adopts 2 / 1 weave, the inner yarn adopts plain weave, and the binding yarn adopts two-up-one-down binding mode to interweave with the surface yarn and the inner yarn.

4. The functional flame-retardant fabric according to claim 3, characterized in that: The ratio of the warp and weft density of the surface layer to that of the inner layer of the double-layer functional fabric is 2:

1.

5. The functional flame-retardant fabric according to claim 4, characterized in that: Conductive yarns are arranged between the surface warp yarns and the inner warp yarns and between the surface weft yarns and the inner weft yarns of the double-layer functional fabric.

6. The functional flame-retardant fabric according to claim 5, characterized in that: The conductive yarn processing method is 37 s / 2—45 s / 2 is twisted with 20D polyester-based conductive yarn, and the twist is 12.5 twists / inch.

7. The functional flame-retardant fabric according to claim 6, characterized in that: The surface warp yarns and the inner warp yarns are arranged cyclically in the following order: 2 surface warp yarns, 1 inner warp yarn, 3 surface warp yarns, 1 inner warp yarn, 1 conductive yarn, 1 inner warp yarn, 2 surface warp yarns, 1 inner warp yarn, 4 surface warp yarns, 2 inner warp yarns, 1 surface warp yarn, 1 inner warp yarn, and 1 binding yarn; The surface weft yarn and the inner weft yarn are arranged according to 2 surface weft yarns, 2 inner weft yarns, 3 surface weft yarns, 2 inner weft yarns, 2 surface weft yarns, 1 inner weft yarn, 1 conductive yarn, and 1 bonding yarn. Four core-filling yarns are introduced between two adjacent weft bonding yarns. The core-filling yarn is pure flame-retardant viscose yarn with a yarn count of 22s, and the four pure flame-retardant viscose yarns are not interwoven with the surface yarns and the inner yarns.

8. The functional flame-retardant fabric according to claim 1, characterized in that: The double-layer functional fabric has a gram weight of 180-230 g / m 2 .

9. The functional flame-retardant fabric according to claim 1, characterized in that: The knitted flame retardant fabric is a single-sided rib knitted fabric with a grammage of 80-150gsm.

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