Regenerated superfine matt nylon laminated fabric and preparation method thereof

Abstract

The invention discloses a regenerated superfine matt nylon laminated fabric and a preparation method thereof.The fabric is formed by interweaving warp yarn and weft yarn, the warp yarn and the weft yarn are made of fine-denier 7D-10D chinlon low-elasticity filaments, the warp yarn and the weft yarn are matt yarn, titanium dioxide is added for matting treatment, and the raw materials of the warp yarn, the weft yarn and the matt yarn are mixed to form the regenerated superfine matt nylon laminated fabric. And the surface of the fiber presents a matte effect by scattering light. The preparation method of the fabric comprises the steps of warping, sizing, re-beaming, weaving, refining, dyeing, sizing, calendaring and laminating. The nylon 66 is adopted as the raw material of the fabric, so that the fabric has better wear resistance, tensile strength, bending strength and impact strength, and is suitable for outdoor jackets and the like. And the yarns are extremely thin, so that the storage is easier. Titanium dioxide serves as a delustering agent, the surface of the fiber presents a matte effect by scattering light rays, generally, titanium dioxide is good in thermal stability and high in refractive index, the particle size of TiO2 needs to be smaller than 1 / 10 of the diameter of the fiber, and the light scattering efficiency can be optimized.

Description

Technical Field

[0001] The present invention belongs to the technical field of textile fibers, and particularly relates to a laminated fabric of superfine dull recycled nylon 66 yarn and a preparation method thereof. Background Art

[0002] Nowadays, with the global attention to environmental problems, there is an increasing need for environmentally friendly products to reduce the demand on the earth, lighten the burden on the earth, and minimize carbon emissions. Existing fine denier yarns are either bright recycled nylon 6 yarns, whose strength, hardness, heat resistance, and wear resistance are inferior to those of nylon 66. At the same time, they have too much luster, a strong chemical fiber feeling, are unnatural, and are not suitable for the aesthetics of contemporary people and outdoor wear. Or they are virgin dull yarns, which cannot achieve the combination of the two.

[0003] The technical problem to be solved by this patent is to use the extremely lightweight raw yarn of recycled nylon 66, and at the same time utilize the matte luster, combine the characteristics of low elastic yarn, and adopt a laminating process to make a fabric suitable for down or outdoor wear. Summary of the Invention

[0004] Object of the Invention: The object of the present invention is to provide a recycled superfine dull nylon laminated fabric and a preparation method thereof.

[0005] Technical Solution of the Present Invention: A recycled superfine dull nylon laminated fabric, the fabric is woven from warp yarns and weft yarns, and the raw materials of the warp and weft yarns are fine denier 7D - 10D polyamide low elastic filaments. The warp and weft yarns are dull yarns, and titanium dioxide is added for dulling treatment, and the fiber surface presents a matte effect by scattering light. The specific dulling treatment process of the warp and weft yarns is as follows:

[0006] Step 1: Pretreat titanium dioxide:

[0007] a. Dispersion treatment: Mix TiO2 powder with a dispersant, and make a stable suspension through high-speed shearing or ball milling process to prevent agglomeration;

[0008] b. Drying and granulation: Pre-mix TiO2 with a small amount of nylon chips to make a high-concentration masterbatch containing 30 - 50% TiO2 for subsequent uniform dispersion;

[0009] Step 2: Mix with nylon substrate:

[0010] Adopt the masterbatch blending method: Blend the TiO2 masterbatch with nylon chips in a ratio of 1.3% - 1.7% TiO2 in a screw extruder, and the shear rate of the screw extruder is greater than 1000 rpm, and the temperature is controlled at: 280°C - 300°C to avoid TiO2 degradation;

[0011] Step 3: Melt spinning:

[0012] A. Melt filtration: Remove undispersed TiO2 aggregates through multiple layers of metal filter screens with a pore size of 10 - 50 μm for the multiple layers of metal filter screens; control the residence time of the melt to be less than 5 minutes to prevent the crystal form transformation or color change of TiO2 at high temperatures;

[0013] B. Spinning: Use a wear-resistant spinneret for spinning to reduce the wear of TiO2 on the equipment;

[0014] C. Cooling and forming: The filaments are cooled and solidified through a slow cooling zone and a side blowing system, where the slow cooling zone can control the crystallinity.

[0015] As a further optimization: The particle size of the titanium dioxide needs to be less than 1 / 10 of the fiber diameter.

[0016] As a further optimization: The warp and weft yarns are recycled nylon 66.

[0017] As a further optimization: The density of the warp yarn is 96 - 120 pieces / cm, and the density of the weft yarn is 96 - 120 pieces / cm.

[0018] As a further optimization: The weave of the fabric is: plain weave, twill weave, satin weave, check or dobby weave.

[0019] As a further optimization: The mass of the fabric is 35 - 80 g / m2.

[0020] As a further optimization: The tearing strength in the warp and weft directions of the fabric is 6 - 15 N respectively.

[0021] A preparation method of a recycled superfine dull nylon laminated fabric, comprising the following steps:

[0022] Step 1, warping: The tension on the creel during warping is 1 - 2 N, and the winding speed of the warping shaft is 100 - 200 m / min;

[0023] Step 2, sizing: The speed of the warp yarn on the sizing machine is 100 - 150 m / min, the single-filament tension when entering the drying oven is 4 - 6 N, the sizing concentration of the sizing agent is 10 - 20%, and the sizing temperature is 40 - 60 °C;

[0024] Step 3, beaming: The beaming speed is 20 - 40 m / min. The coiling tension is 94 kg;

[0025] Step 4, weaving: The weaving speed is 400 - 650 rpm, and the weaving tension is 80 - 100 kgf;

[0026] Step 5, scouring: The purpose of scouring is to remove the sizing agent, the temperature is 80 - 100 °C, and the speed is 40 - 70 m / min;

[0027] Step 6. Dyeing: The dyeing temperature is 80 - 100 °C, and the dyeing speed is 200 - 300 m / min;

[0028] Step 7. Setting: The setting temperature is 140 - 190 °C, and the setting speed is 50 - 70 m / min;

[0029] Step 8. Calendering: The calendering temperature is 20 °C - 50 °C, and the calendering speed is 10 - 40 m / min;

[0030] Step 9. Laminating: The laminating temperature is 12 °C - 80 °C, and the laminating speed is 10 - 25 m / min.

[0031] Beneficial effects: The specific advantages of the present invention are as follows:

[0032] 1. The raw material of the fabric of the present invention is nylon 66, which performs better in terms of wear resistance, tensile strength, flexural strength and impact strength, and is suitable for uses such as outdoor windbreakers. Due to the extremely fine yarn, it is easier to store.

[0033] 2. The yarn in the present invention has a low gloss, a soft appearance, is not overly dazzling, and gives a low-key and elegant feeling.

[0034] 3. The product in the present invention is made of recycled yarn, reducing the emission of textile waste and the demand for new resources, and contributing to environmental protection and sustainable development.

[0035] 4. Titanium dioxide in the present invention is used as a matting agent, and the fiber surface presents a matte effect by scattering light. Generally, titanium dioxide has good thermal stability and high refractive index, and the TiO2 particle size needs to be less than 1 / 10 of the fiber diameter, which can optimize the light scattering efficiency. Specific embodiments

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below, so that those skilled in the art can better understand the advantages and features of the present invention, and thus make a clearer definition of the protection scope of the present invention. The embodiments described in the present invention are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. Specific embodiment 1

[0038] A regenerated superfine dull nylon laminated fabric, the fabric is woven from warp yarns and weft yarns, the warp and weft yarns are dull yarns, and titanium dioxide is added for dulling treatment, and the fiber surface presents a matte effect by scattering light; the specific dulling treatment process of the warp and weft yarns is as follows:

[0039] Step 1: Pretreat titanium dioxide:

[0040] a. Dispersion treatment: Mix TiO2 powder with a dispersant and make a stable suspension through high-speed shearing or ball milling process to prevent agglomeration;

[0041] b. Drying and granulation: Pre-mix TiO2 with a small amount of nylon chips to make a high-concentration masterbatch containing 30% TiO2 for subsequent uniform dispersion;

[0042] Step 2: Mix with nylon substrate:

[0043] Adopt the masterbatch blending method: Blend the TiO2 masterbatch and nylon chips in a screw extruder at a ratio of 1.3% TiO2. The shear rate of the screw extruder is greater than 1000 rpm, and the temperature is controlled at 280 °C to avoid TiO2 degradation;

[0044] Step 3: Melt spinning:

[0045] A. Melt filtration: Remove undispersed TiO2 agglomerates through multiple layers of metal filter screens. The pore size of the multiple layers of metal filter screens is 10 μm; Control the residence time of the melt to be less than 5 minutes to prevent the crystal form transformation or discoloration of TiO2 at high temperature;

[0046] B. Spinning: Use an abrasion-resistant spinneret for spinning to reduce the wear of TiO2 on the equipment;

[0047] C. Cooling and forming: The filaments are cooled and solidified through a slow cooling zone and a side air-blowing system. The slow cooling zone can control the crystallinity.

[0048] The preparation method of the regenerated superfine dull nylon laminated fabric includes the following steps:

[0049] Step 1, warping: The tension on the creel for warping is 1 N, and the winding speed of the warping shaft is 100 m / min;

[0050] Step 2, sizing: The speed of the warp yarn on the sizing machine is 100 m / min, the single-filament tension when entering the drying oven is 4 N, the sizing concentration of the sizing agent is 10%, and the sizing temperature is 40 °C;

[0051] Step 3, beaming: The beaming speed is 20 m / min. The winding tension is 94 kg;

[0052] Step 4, weaving: The weaving speed is 400 rpm, and the weaving tension is 80 kgf;

[0053] Step 5, scouring: The purpose of scouring is to remove the sizing agent. The temperature is 80 °C, and the speed is 40 m / min;

[0054] Step 6, dyeing: The dyeing temperature is 80 °C, and the dyeing speed is 200 m / min;

[0055] Step 7: Shaping: The shaping temperature is 140°C, and the shaping speed is 50 m / min;

[0056] Step 8: Calendering: The calendering temperature is 20°C, and the calendering speed is 10 m / min;

[0057] Step 9: Laminating: The laminating temperature is 12°C, and the laminating speed is 10 m / min. Specific Embodiment 2

[0059] A regenerated superfine dull nylon laminated fabric, wherein the fabric is woven from warp yarns and weft yarns, and the warp and weft yarns are dull yarns. Titanium dioxide is added for dulling treatment, and the fiber surface presents a matte effect by scattering light. The specific dulling treatment process of the warp and weft yarns is as follows:

[0060] Step 1: Pretreat titanium dioxide:

[0061] a. Dispersion treatment: Mix TiO2 powder with a dispersant and make a stable suspension through high-speed shearing or ball milling process to prevent agglomeration;

[0062] b. Drying and granulation: Pre-mix TiO2 with a small amount of nylon chips to make a high-concentration masterbatch containing 50% TiO2 for subsequent uniform dispersion;

[0063] Step 2: Mix with nylon substrate:

[0064] Adopt the masterbatch blending method: Blend the TiO2 masterbatch and nylon chips in a screw extruder at a ratio of 1.7% TiO2. The shear rate of the screw extruder is greater than 1000 rpm, and the temperature is controlled at: 300°C to avoid TiO2 degradation;

[0065] Step 3: Melt spinning:

[0066] A. Melt filtration: Remove undispersed TiO2 agglomerates through multiple layers of metal filters. The pore size of the multiple layers of metal filters is 50 μm; Control the residence time of the melt to be less than 5 minutes to prevent the crystal form transformation or discoloration of TiO2 at high temperature;

[0067] B. Spinning: Use a wear-resistant spinneret for spinning to reduce the wear of TiO2 on the equipment;

[0068] C. Cooling and shaping: The filaments are cooled and solidified through a slow cooling zone and a side air blowing system, and the slow cooling zone can control the crystallinity.

[0069] The preparation method of the regenerated superfine dull nylon laminated fabric includes the following steps:

[0070] Step 1, warping: The tension on the creel during warping is 2N, and the winding speed of the warping beam is 200 m / min;

[0071] Step 2, sizing: The speed of the warp yarn on the sizing machine is 150 m / min, the single-filament tension when entering the drying chamber is 6N, the sizing concentration of the sizing agent is 20%, and the sizing temperature is 60°C;

[0072] Step 3, beam forming: The beam-forming speed is 40 m / min. The winding tension is 94 kg;

[0073] Step 4, weaving: The weaving speed is 650 rpm, and the weaving tension is 100 kgf;

[0074] Step 5, scouring: The purpose of scouring is to remove the sizing agent. The temperature is 100°C, and the speed is 70 m / min;

[0075] Step 6, dyeing: The dyeing temperature is 100°C, and the dyeing speed is 300 m / min;

[0076] Step 7, setting: The setting temperature is 190°C, and the setting speed is 70 m / min;

[0077] Step 8, calendering: The calendering temperature is 50°C, and the calendering speed is 40 m / min;

[0078] Step 9, laminating: The laminating temperature is 80°C, and the laminating speed is 25 m / min.

[0079] The performance of the fabric in the above two embodiments is as follows:

[0080] Table 1 Performance table of the fabric

[0081] Project Example 1 Example 2 Warp 10D-10-RE.FD.NY66.DTY 10D-10-RE.FD.NY66.DTY Weft 10D-10-RE.FD.NY66.DTY 10D-10-RE.FD.NY66.DTY Density 261＊261 280＊285 Weave RIP RIP Processing method Lamination Lamination Tear strength (N) 8.12＊7.59 11.33＊15.25 Grammage (g / m2) 78 67 Abrasion resistance (grade) 4 4

[0082] The raw material of the fabric of the present invention is nylon 66, which has better performance in terms of abrasion resistance, tensile strength, flexural strength and impact strength, and is suitable for uses such as outdoor windbreakers. Due to the extremely fine yarn, it is easier to store.

[0083] The yarn in the present invention has a low gloss, a soft appearance, is not overly dazzling, and gives a low-key and elegant feeling.

[0084] The product in the present invention is made of recycled yarn, which reduces the emission of textile waste, reduces the demand for new resources, and contributes to environmental protection and sustainable development.

[0085] In the present invention, titanium dioxide is used as a matting agent, and by scattering light, the fiber surface presents a matte effect. Generally, titanium dioxide has good thermal stability and high refractive index, and the TiO2 particle size needs to be less than 1 / 10 of the fiber diameter, which can optimize the light scattering efficiency.

Claims

1. A recycled ultra-fine matte nylon laminated fabric, characterized by: The fabric is interwoven with warp yarn and weft yarn. The raw materials of the warp and weft yarn are nylon low-elastic filaments with fine denier of 7D-10D. The warp and weft yarns are matte yarns, and titanium dioxide is added for matte treatment to make the fiber surface present a matte effect by scattering light. The specific matte treatment process of the warp and weft yarns is as follows: Step 1: Pre-treat titanium dioxide: a. Dispersion treatment: Mix TiO2 powder with dispersant and make a stable suspension through high-speed shearing or ball milling process to prevent agglomeration; b. Drying and granulation: TiO2 is mixed with a small amount of nylon chips in advance to make a high-concentration masterbatch containing 30-50% TiO2, which is convenient for subsequent uniform dispersion; Step 2: Mix with Nylon Base: The masterbatch blending method is adopted: TiO2 masterbatch and nylon chips are melt-blended in a screw extruder at a ratio of 1.3%-1.7% TiO2. The shear rate of the screw extruder is greater than 1000rpm, and the temperature is controlled at 280℃-300℃ to avoid TiO2 degradation; Step 3: Melt Spinning: A. Melt filtration: Remove undispersed TiO2 agglomerates through a multi-layer metal filter, where the pore size of the multi-layer metal filter is 10-50μm; control the melt residence time to less than 5 minutes to prevent TiO2 from crystal transformation or discoloration at high temperature; B. Spinning: Use wear-resistant spinnerets for spinning to reduce the wear of TiO2 on the equipment; C. Cooling and forming: The filaments are cooled and solidified through a slow cooling zone and a side blowing system, wherein the slow cooling zone can control the crystallinity.

2. The recycled ultra-fine matte nylon laminated fabric according to claim 1, characterized in that: The particle size of the titanium dioxide should be less than 1 / 10 of the fiber diameter.

3. The recycled ultra-fine matte nylon laminated fabric according to claim 1, characterized in that: The warp and weft yarns are regenerated nylon 66.

4. The recycled ultra-fine matte nylon laminated fabric according to claim 1, characterized in that: The density of the warp yarn is 96 to 120 yarns / cm, and the density of the weft yarn is 96 to 120 yarns / cm.

5. The recycled ultra-fine matte nylon laminated fabric according to claim 1, characterized in that: The fabric has the following weaves: plain weave, twill weave, satin weave, lattice weave or dobby weave.

6. The recycled ultra-fine matte nylon laminated fabric according to claim 1, characterized in that: The mass of the fabric is 35-80g / m2.

7. The recycled ultra-fine matte nylon laminated fabric according to claim 1, characterized in that: The tearing strength of the fabric in warp and weft directions is 6-15N respectively.

8. A method for preparing the recycled ultra-fine matte nylon laminated fabric according to claim 1, characterized in that: The steps include: Step 1: Warping: The tension on the warping creel is 1-2N, and the speed of the warping beam is 100-200m / min; Step 2: Sizing: The warp speed of the sizing machine is 100-150m / min, the single yarn tension is 4-6N when entering the drying room, the sizing concentration of the sizing material is 10-20%, and the sizing temperature is 40-60℃; Step 3: Shafting: Shafting speed is 20-40m / min. Winding tension is 94kg; Step 4, weaving: the weaving speed is 400-650rpm, and the weaving tension is 80-100kgf; Step 5: Refining: The purpose of refining is to remove the slurry, the temperature is 80-100℃, and the speed is 40-70m / min; Step 6: Dyeing: the dyeing temperature is 80-100°C and the dyeing speed is 200-300m / min; Step 7: Shaping: The shaping temperature is 140-190℃, and the shaping speed is 50-70m / min; Step 8: Calendering: the calendering temperature is 20℃-50℃, and the calendering speed is 10-40m / min; Step nine, bonding: the bonding temperature is 12℃-80℃, and the bonding speed is 10-25m / min.