Artificial down fabric as well as preparation method and application thereof

Abstract

The invention belongs to the technical field of fabrics. The invention provides an artificial down fabric as well as a preparation method and application thereof. The preparation method comprises the following steps: twisting fiber yarns into spiral fiber semi-processed yarns; steaming and air-drying the fiber semi-processed yarn; taking the two air-dried semi-processed steam-smelted fiber yarns, respectively feeding the two air-dried semi-processed steam-smelted fiber yarns into a two-for-one twister to form vertical-ring-shaped second twisted yarns, and feeding the vertical-ring-shaped second twisted yarns into a traction roller to form vertical-ring-shaped second twisted yarns; the vertical loop tissue is snapped to form fluffy yarn, and then the fluffy yarn is collected and twisted; feeding the napped and twisted fluff yarns on a precise winding machine to obtain down-like finished yarns; weaving the down-like yarns into gray fabric; the woven gray fabric is dyed and shaped; brushing, carding and shearing the dyed and shaped gray fabric; carrying out polar fleece and shaping treatment on the sheared gray fabric to obtain the artificial down feather fabric. The heat preservation rate of a single layer (the gram weight is 89g / m < 2 >) of the obtained artificial down fabric reaches 55.4%, the heat preservation rate of a double layer (the gram weight is 178g / m < 2 >) of the obtained artificial down fabric reaches 71.2%, and the heat preservation performance is good.

Description

Technical Field

[0001] This invention relates to the field of fabric technology, and in particular to an artificial down fabric, its preparation method, and its application. Background Technology

[0002] Existing alternatives to down, such as medium-density cotton, suffer from poor warmth retention and durability, are prone to clumping after washing, and cannot be dyed. Currently, they can only be used in the low-to-mid-range market, while the high-end market still primarily relies on down.

[0003] At the same time, people's respect for animal rights and awareness of protection are increasing, and the price of down is subject to large market fluctuations, leading to an increase in the corresponding product costs; moreover, the existing down fabrics are not very warm, affecting the comfort of wearing in winter; and as the usage time increases, the decomposition of down protein fibers will produce odors. Summary of the Invention

[0004] To address the above problems, this invention provides an artificial down fabric, its preparation method, and its applications.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a method for preparing artificial down fabric, comprising the following steps:

[0006] Step 1: Load the fiber filaments onto the twisting machine and start the twisting machine to twist the fiber filaments into a spiral semi-processed fiber yarn;

[0007] Step 2: Place the semi-processed fiber yarn into a steaming equipment for steaming and then air-dry it after stabilizing the spiral angle of the semi-processed fiber yarn.

[0008] Step 3: Take two semi-processed steamed fiber yarns after air drying and feed them into the CNC feeding rollers of a multi-channel twisting machine. Each semi-processed steamed fiber yarn is controlled by an independent CNC feeding roller. Entering the CNC twisting zone, the two semi-processed steamed fiber yarns take turns performing CNC programmed overfeeding, binding, and winding actions. After completing the above complex alternating overfeeding and winding into a retwisted yarn, a vertical loop retwisted yarn with the required height is formed. The vertical loop retwisted yarn enters the CNC pulling roller. While the feeding roller is performing CNC programmed actions, the pulling roller performs a coordinated CNC programmed pulling action. After exiting the pulling zone, the vertical loop retwisted yarn enters the synchronous winding.

[0009] Step 4: Take multiple looped retwisted yarns after winding and feed them into the yarn napping equipment in a continuous state. The yarn napping equipment continuously and evenly breaks the loop structure on the looped retwisted yarns to form fluffy yarns. At the same time, it can simultaneously take the yarn into skeins.

[0010] Step 5: The spun down yarn is wound onto a precision winding machine to form a fixed length and constant tension bobbin. Waxing is performed simultaneously during bobbin forming to obtain the finished down-like yarn.

[0011] Step Six: Feed the imitation down yarn into the loom and weave the fabric using the loom;

[0012] Step 7: Dye and perform a first-stage setting treatment on the woven fabric;

[0013] Step 8: Brush, comb, and shear the fabric after dyeing and initial setting.

[0014] Step 9: The sheared fabric is shaken and then subjected to a second shaping process to obtain artificial down fabric.

[0015] Preferably, in step one, the material of the fiber filament is chemical fiber, regenerated cellulose fiber, biomass regenerated fiber, or natural fiber. Chemical fibers include polyester fiber, polypropylene fiber, ethylene glycol, or nylon fiber. Regenerated cellulose fibers include viscose, modal, and Tencel. Biomass regenerated fibers include acetate fiber and polylactic acid fiber. Natural fibers include cotton, wool, silk, and linen fibers. The twisting machine rotates at 4000-8000 r / min, and the tension of the fiber filament is adjusted to 10-50 N.

[0016] Preferably, in step two, the steaming equipment is a steam vacuum dry steaming equipment, the controllable temperature of the steam vacuum dry steaming equipment is 50-150℃, and the steaming time is more than 30 minutes; a tunnel-type drying box is used to air dry, cool and relax the steamed fiber yarn, and the tunnel-type drying box is equipped with an air outlet mechanism for circulating and blowing the steamed fiber yarn; the controllable temperature of the tunnel-type drying box is 24-200℃, and the wind speed is 0.3*(1±20%)m / s-6*(1±20%)m / s.

[0017] Preferably, in step four, a circular knitting machine is used to weft knit the imitation down yarn. The circular knitting machine has 3.5 needles per inch and a weft density of 4-5 needles per inch.

[0018] Preferably, in step five, the heating rate of the dyeing equipment is 1-2℃ / min, the scouring temperature is 70-100℃, and an oil-removing agent is added during the scouring process. The main pump speed of the dyeing vat in the dyeing equipment is set to 700-1000r / min, and the speed of the fabric lifting wheel in the dyeing equipment is 100-300r / min.

[0019] Preferably, in step five, the setting temperature is 180-210℃, the speed is 15-25 yards / min, the rolling pressure is 180-210N, the overfeed is 80-100%, and a softener is added during the overfeeding process.

[0020] Preferably, in the brushing process of step six, the fabric guiding speed is 25-30 m / min, the over-needling speed is 90 r / min, the needle initiation speed is 100 r / min, the fabric output tension is 2.0 kgf, the fabric input tension is 1.6 kgf, and the over-needling air pressure is 1.8 kg / cm. -2 The needle-starting air pressure is 2.0 kg / cm². -2 The total pressure gauge reading is 3.0 kg·cm⁻².

[0021] Preferably, during the combing process in step six, the tension of section a of the combing equipment is controlled to be 92 kg·cm. -2 The tension in segment b is 95 kg·cm. -2 The tension in segment c is 98 kg·cm. -2 The guide speed is 24m / min, and the combing rate is 150%.

[0022] Preferably, in the shaking process of step seven, the steam time is 20 min, the hot air time is 20 min, the cold air time is 20 min, and the temperature is 70°C.

[0023] The present invention also provides an artificial down fabric obtained by the above-described preparation method.

[0024] The present invention also provides an application of the above-mentioned artificial down fabric in clothing and home textiles.

[0025] As can be seen from the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages:

[0026] This invention involves twisting, steaming, and doubling the twisting of fiber filaments to form down-like yarn. This yarn is then woven into a fabric, followed by dyeing, primary setting, brushing, combing, shearing, pelletizing, and a secondary setting process to obtain the finished product. This allows the prepared artificial down fabric to have a single layer weight of 89 g / m². 2 The thermal insulation rate can reach 55.4%, double-layer (weight 178g / m²) 2 The heat retention rate can reach 71.2%, providing good warmth and comfort when worn. It also solves the problem of limited raw material acquisition in existing technologies, allowing the use of recyclable and sustainable raw materials for processing, and the resulting fabric is odorless. Detailed Implementation

[0027] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features and effects of the present invention, in conjunction with embodiments, is provided below.

[0028] Example 1

[0029] A method for preparing artificial down fabric includes the following steps:

[0030] Step 1: Place the fiber filaments on the twisting machine, adjust the twisting machine speed to 4000 r / min, and adjust the tension of the fiber filaments to 10N. The twisting machine will twist the fiber filaments into a spiral semi-processed yarn. The fiber filaments are made of chemical fibers, regenerated cellulose fibers, or biomass regenerated fibers. Chemical fibers include polyester fibers, polypropylene fibers, polyethylene fibers, or nylon fibers. Regenerated cellulose fibers include viscose, modal, and Tencel. Biomass regenerated fibers include cotton, wool, silk, linen fibers, acetate fibers, and polylactic acid fibers. Natural fibers include cotton, wool, silk, linen fibers.

[0031] Step 2: Place the semi-processed fiber yarn into a steam vacuum dry scouring device for steaming. Set the controllable temperature of the steam vacuum dry scouring device to 50℃ and the steaming time to more than 30 minutes. After stabilizing the spiral angle of the steamed fiber yarn, place it back into the steam vacuum dry scouring device. Set the temperature of the steam vacuum dry scouring device to 24℃ and the wind speed to 0.3*(1±20%)m / s-6*(1±20%)m / s. Use the circulating hot air provided by the air outlet mechanism in the steam vacuum dry scouring device to circulate and blow the fiber yarn to ensure that the yarn is in a dry state.

[0032] Step 3: Take two semi-processed steamed fiber yarns after air drying and feed them into the CNC feeding rollers of a multi-channel twisting machine. Each semi-processed steamed fiber yarn is controlled by an independent CNC feeding roller. Entering the CNC twisting zone, the two semi-processed steamed fiber yarns take turns performing CNC programmed overfeeding, binding, and winding actions. After completing the above complex alternating overfeeding and winding into a retwisted yarn, a vertical loop retwisted yarn with the required height is formed. The vertical loop retwisted yarn enters the CNC pulling roller. While the feeding roller is performing CNC programmed actions, the pulling roller performs a coordinated CNC programmed pulling action. After exiting the pulling zone, the vertical loop retwisted yarn enters the synchronous winding.

[0033] Step 4: Take multiple looped retwisted yarns together and feed them into the yarn napping equipment in a continuous state. The yarn napping equipment continuously and evenly breaks the loop structure on the looped retwisted yarns to form fluffy yarns. At the same time, it can simultaneously take the yarns into strands.

[0034] Step 5: The spun down yarn is wound onto a precision winding machine and wound into bobbins at a constant length and tension. Waxing is performed simultaneously during the bobbin winding process to obtain down-like yarn.

[0035] Step 6: Use a circular knitting machine to weft knit the imitation down yarn to form a greige fabric, and set the number of needles per inch of the circular knitting machine to 3.5 needles and the weft density to 4-5 needles per inch;

[0036] Step 7: Dye and set the woven fabric once; the heating rate of the dyeing equipment is 1℃ / min, the scouring temperature is 70℃, and an oil-removing agent is added during the scouring process; the main pump speed of the dyeing tank in the dyeing equipment is set to 700r / min, and the speed of the fabric lifting wheel in the dyeing equipment is 100r / min; the setting temperature is 180℃, the machine speed is 15 yards / min, the rolling pressure is 180N, the overfeed is 80%, and a softener is added during the overfeed process;

[0037] Step 8: After dyeing and initial setting, the greige fabric undergoes brushing, combing, and shearing. During the brushing process, the guiding speed is 25 m / min, the overlock speed is 90 r / min, the start-up speed is 100 r / min, the outgoing tension is 2.0 kgf, the incoming tension is 1.6 kgf, and the overlock air pressure is 1.8 kg / m. 2 The needle-starting air pressure is 2.0 kg / m³. 2 The total pressure gauge reading is 3.0 kg / m³. 2 During the combing process, the tension in section a of the combing equipment is controlled at 92 kg / m. 2 The tension in section b is 95 kg / m. 2 The tension in section C is 98 kg / m. 2 The guide speed is 24m / min, and the combing rate is 150%.

[0038] Step 9: The sheared fabric is shaken and then subjected to a second shaping process to obtain artificial down fabric. During the shaking process, the steam time is 20 minutes, the hot air time is 20 minutes, the cold air time is 20 minutes, and the temperature is 70℃.

[0039] Example 2

[0040] A method for preparing artificial down fabric includes the following steps:

[0041] Step 1: Place the fiber filaments on the twisting machine, adjust the twisting machine speed to 6000 r / min, and adjust the tension of the fiber filaments to 30 N. The twisting machine will twist the fiber filaments into a spiral semi-processed yarn. The fiber filaments are made of chemical fibers, regenerated cellulose fibers, or biomass regenerated fibers. Chemical fibers include polyester fibers, polypropylene fibers, polyethylene fibers, or nylon fibers. Regenerated cellulose fibers include viscose, modal, and Tencel. Biomass regenerated fibers include cotton, wool, silk, linen fibers, acetate fibers, and polylactic acid fibers. Natural fibers include cotton, wool, silk, linen fibers.

[0042] Step 2: Place the semi-processed fiber yarn into a steam vacuum dry scouring device for steaming. Set the controllable temperature of the steam vacuum dry scouring device to 100℃ and the steaming time to more than 30 minutes. After stabilizing the spiral angle of the steamed fiber yarn, place it back into the steam vacuum dry scouring device. Set the temperature of the steam vacuum dry scouring device to 110℃ and the wind speed to 0.3*(1±20%)m / s-6*(1±20%)m / s. Use the circulating hot air provided by the air outlet mechanism in the steam vacuum dry scouring device to circulate and blow the fiber yarn to ensure that the yarn is in a dry state.

[0043] Step 3: Take two semi-processed steamed fiber yarns after air drying and feed them into the CNC feeding rollers of a multi-channel twisting machine. Each semi-processed steamed fiber yarn is controlled by an independent CNC feeding roller. Entering the CNC twisting zone, the two semi-processed steamed fiber yarns take turns performing CNC programmed overfeeding, binding, and winding actions. After completing the above complex alternating overfeeding and winding into a retwisted yarn, a vertical loop retwisted yarn with the required height is formed. The vertical loop retwisted yarn enters the CNC pulling roller. While the feeding roller is performing CNC programmed actions, the pulling roller performs a coordinated CNC programmed pulling action. After exiting the pulling zone, the vertical loop retwisted yarn enters the synchronous winding.

[0044] Step 4: Take multiple looped retwisted yarns together and feed them into the yarn napping equipment in a continuous state. The yarn napping equipment continuously and evenly breaks the loop structure on the looped retwisted yarns to form fluffy yarns. At the same time, it can simultaneously take the yarns into strands.

[0045] Step 5: The spun down yarn is wound onto a precision winding machine and wound into bobbins at a constant length and tension. Waxing is performed simultaneously during the bobbin winding process to obtain down-like yarn.

[0046] Step 6: Use a circular knitting machine to weft knit the imitation down yarn to form a greige fabric, and set the needle position of the circular knitting machine to 5 needles and the weft density to 1 inch 12;

[0047] Step 7: Dye and set the woven fabric once; the heating rate of the dyeing equipment is 1℃ / min, the scouring temperature is 70℃, and an oil-removing agent is added during the scouring process; the main pump speed of the dyeing tank in the dyeing equipment is set to 700r / min, and the speed of the fabric lifting wheel in the dyeing equipment is 100r / min; the setting temperature is 180℃, the machine speed is 15 yards / min, the rolling pressure is 180N, the overfeed is 80%, and a softener is added during the overfeed process;

[0048] Step 8: After dyeing and initial setting, the greige fabric undergoes brushing, combing, and shearing. During the brushing process, the fabric guide speed is 25-30 m / min, the overlock speed is 90 r / min, the start-up speed is 100 r / min, the fabric tension is 2.0 kgf, the fabric tension is 1.6 kgf, and the overlock air pressure is 1.8 kg / cm. -2 The needle-starting air pressure is 2.0 kg / cm². -2 The total pressure gauge reading is 3.0 kg / cm. -2 In step six, during the combing process, the tension in section a of the combing equipment is controlled at 92 kg / cm. -2 The tension in segment b is 95 kg·cm. -2 The tension in segment c is 98 kg·cm. -2 The guide speed is 24m / min, and the combing rate is 150%.

[0049] Step 9: The sheared fabric is shaken and then subjected to a secondary setting process to obtain the artificial down fabric. During the shaking process, the steam time is [not specified], the hot air time is 20 minutes, the cold air time is 20 minutes, and the temperature is 70℃.

[0050] Example 3

[0051] A method for preparing artificial down fabric includes the following steps:

[0052] Step 1: Place the fiber filaments on the twisting machine, adjust the twisting machine speed to 8000 r / min, and adjust the tension of the fiber filaments to 50 N. The twisting machine will twist the fiber filaments into a spiral semi-processed yarn. The fiber filaments are made of chemical fibers, regenerated cellulose fibers, or biomass regenerated fibers. Chemical fibers include polyester fibers, polypropylene fibers, polyethylene fibers, or nylon fibers. Regenerated cellulose fibers include viscose, modal, and Tencel. Biomass regenerated fibers include cotton, wool, silk, linen fibers, acetate fibers, and polylactic acid fibers. Natural fibers include cotton, wool, silk, linen fibers.

[0053] Step 2: Place the semi-processed fiber yarn into a steam vacuum dry scouring device for steaming. Set the controllable temperature of the steam vacuum dry scouring device to 150℃ and the steaming time to more than 30 minutes. After stabilizing the spiral angle of the steamed fiber yarn, place it back into the steam vacuum dry scouring device. Set the temperature of the steam vacuum dry scouring device to 200℃ and the wind speed to 0.3*(1±20%)m / s-6*(1±20%)m / s. Use the circulating hot air provided by the air outlet mechanism in the steam vacuum dry scouring device to circulate and blow the fiber yarn to ensure that the yarn is in a dry state.

[0054] Step 3: Take two semi-processed steamed fiber yarns after air drying and feed them into the CNC feeding rollers of a multi-channel twisting machine. Each semi-processed steamed fiber yarn is controlled by an independent CNC feeding roller. Entering the CNC twisting zone, the two semi-processed steamed fiber yarns take turns performing CNC programmed overfeeding, binding, and winding actions. After completing the above complex alternating overfeeding and winding into a retwisted yarn, a vertical loop retwisted yarn with the required height is formed. The vertical loop retwisted yarn enters the CNC pulling roller. While the feeding roller is performing CNC programmed actions, the pulling roller performs a coordinated CNC programmed pulling action. After exiting the pulling zone, the vertical loop retwisted yarn enters the synchronous winding.

[0055] Step 4: Take multiple looped retwisted yarns together and feed them into the yarn napping equipment in a continuous state. The yarn napping equipment continuously and evenly breaks the loop structure on the looped retwisted yarns to form fluffy yarns. At the same time, it can simultaneously take the yarns into strands.

[0056] Step 5: The spun down yarn is wound onto a precision winding machine and wound into bobbins at a constant length and tension. Waxing is performed simultaneously during the bobbin winding process to obtain down-like yarn.

[0057] Step 6: Use a circular knitting machine to weft knit the imitation down yarn to form a greige fabric, and set the needle position of the circular knitting machine to 5 needles and the weft density to 1 inch 12;

[0058] Step 7: Dye and set the woven fabric once; the heating rate of the dyeing equipment is 1℃ / min, the scouring temperature is 70℃, and an oil-removing agent is added during the scouring process; the main pump speed of the dyeing tank in the dyeing equipment is set to 700r / min, and the speed of the fabric lifting wheel in the dyeing equipment is 100r / min; the setting temperature is 180℃, the machine speed is 15 yards / min, the rolling pressure is 180N, the overfeed is 80%, and a softener is added during the overfeed process;

[0059] Step 8: After dyeing and initial setting, the greige fabric undergoes brushing, combing, and shearing. During the brushing process, the guiding speed is 25 m / min, the overlock speed is 90 r / min, the start-up speed is 100 r / min, the outgoing tension is 2.0 kgf, the incoming tension is 1.6 kgf, and the overlock air pressure is 1.8 kg / m. 2 The needle-starting air pressure is 2.0 kg / m³. 2 The total pressure gauge reading is 3.0 kg / m³. 2 During the combing process, the tension in section a of the combing equipment is controlled at 92 kg / m. 2 The tension in section b is 95 kg / m. 2 The tension in section C is 98 kg / m. 2 The guide speed is 24m / min, and the combing rate is 150%.

[0060] Step 9: The sheared fabric is shaken and then subjected to a second shaping process to obtain artificial down fabric. During the shaking process, the steam time is 20 minutes, the hot air time is 20 minutes, the cold air time is 20 minutes, and the temperature is 70℃.

[0061] The artificial down fabric and its preparation method of the present invention include twisting, steaming, and doubling the twisting of fiber filaments to form down-like yarn, then weaving the down-like yarn into a greige fabric, followed by dyeing, primary setting, brushing, combing, shearing, pelletizing, and secondary setting to obtain the finished product. This allows the prepared artificial down fabric to achieve a single-layer heat retention rate (gram weight 89 g / m²). 2 It can reach 55.4%, double-layered (gram weight 178g / m³). 2 The heat retention rate can reach 71.2%, providing good warmth and comfort when worn. It also solves the problem of limited raw material acquisition in existing technologies, allowing the use of recyclable and sustainable raw materials for processing, and the resulting fabric is odorless.

[0062] The artificial down fabric prepared in Example 2 (the weight of a single layer of fabric is 89 g / m²) 2 The weight of the double-layer fabric is 178g / m². 2 The detailed results of its physical performance index tests are shown in the table below:

[0063]

[0064] The artificial down fabric prepared in this embodiment has a single layer (weight 89g / m²). 2 The heat transfer performance has a Cro value of 0.747 and a thermal insulation rate of 55.4%, with a double-layer structure (weight 178 g / m²). 2 The clo value in heat transfer performance is 1.49 and the heat retention rate is 71.2%. The above test results show that the artificial down fabric obtained by the preparation method of the present invention is not only soft, but also has a good heat retention effect.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for preparing artificial down fabric, characterized in that, Includes the following steps: Step 1: Load the fiber filaments onto the twisting machine and start the twisting machine to twist the fiber filaments into a spiral semi-processed fiber yarn; Step 2: Place the semi-processed fiber yarn into a steaming equipment for steaming and then air-dry it after stabilizing the spiral angle of the semi-processed fiber yarn. Step 3: Take two semi-processed steamed fiber yarns after air drying and feed them into the CNC feeding rollers of a multi-channel twisting machine. Each semi-processed steamed fiber yarn is controlled by an independent CNC feeding roller. Entering the CNC twisting zone, the two semi-processed steamed fiber yarns take turns performing CNC programmed overfeeding, binding, and winding actions. After completing the above complex alternating overfeeding and winding into a retwisted yarn, a vertical loop retwisted yarn with the required height is formed. The vertical loop retwisted yarn enters the CNC pulling roller. While the feeding roller is performing CNC programmed actions, the pulling roller performs a coordinated CNC programmed pulling action. After exiting the pulling zone, the vertical loop retwisted yarn enters the synchronous winding. Step 4: Take multiple looped retwisted yarns after winding and feed them into the yarn napping equipment in a continuous state. The yarn napping equipment continuously and evenly breaks the loop structure on the looped retwisted yarns to form fluffy yarns. At the same time, it can simultaneously take the yarn into skeins. Step 5: The spun down yarn is wound onto a precision winding machine to form a fixed length and constant tension bobbin. Waxing is performed simultaneously during bobbin forming to obtain the finished down-like yarn. Step Six: Feed the imitation down yarn into the loom and weave the fabric using the loom; Step 7: Dye and perform a first-stage setting treatment on the woven fabric; Step 8: Brush, comb, and shear the fabric after dyeing and initial setting. Step 9: The sheared fabric is shaken and then subjected to a second shaping process to obtain artificial down fabric.

2. The method for preparing artificial down fabric according to claim 1, characterized in that: In step one, the fiber filament is made of chemical fiber, regenerated cellulose fiber, biomass regenerated fiber, or natural fiber. Chemical fiber includes polyester fiber, polypropylene fiber, ethylene glycol, or nylon fiber. Regenerated cellulose fiber includes viscose, modal, and Tencel. Biomass regenerated fiber includes acetate fiber and polylactic acid fiber. Natural fiber includes cotton, wool, silk, and linen fibers. The twisting machine rotates at 4000-8000 r / min, and the tension of the fiber filament is adjusted to 10-50 N.

3. The method for preparing artificial down fabric according to claim 1, characterized in that: In step two, the steaming equipment is a steam vacuum dry steaming equipment with a controllable temperature of 50-150℃ and a steaming time of more than 30 minutes. A tunnel-type drying box is used to air dry, cool and relax the steamed fiber yarn. The tunnel-type drying box is equipped with an air outlet mechanism for circulating and blowing the steamed fiber yarn. The controllable temperature of the tunnel-type drying box is 24-200℃ and the wind speed is 0.3*(1±20%)m / s-6*(1±20%)m / s.

4. The method for preparing artificial down fabric according to claim 1, characterized in that: In step four, a circular knitting machine is used to weft knit the imitation down yarn. The circular knitting machine has 3.5 needles per inch and a weft density of 4-5 needles per inch.

5. The method for preparing artificial down fabric according to claim 1, characterized in that: In step five, the heating rate of the dyeing equipment is 1-2℃ / min, the scouring temperature is 70-100℃, and an oil-removing agent is added during the scouring process. The main pump speed of the dyeing vat in the dyeing equipment is set to 700-1000r / min, and the speed of the fabric lifting wheel in the dyeing equipment is 100-300r / min.

6. The method for preparing artificial down fabric according to claim 1, characterized in that: In step five, the setting temperature is 180-210℃, the speed is 15-25 yards / min, the rolling pressure is 180-210N, the overfeed is 80-100%, and a softener is added during the overfeeding process.

7. The method for preparing artificial down fabric according to claim 1, characterized in that: In step six, during the brushing process, the fabric guide speed is 25-30 m / min, the over-needling speed is 90 r / min, the needle initiation speed is 100 r / min, the fabric output tension is 2.0 kgf, the fabric input tension is 1.6 kgf, and the over-needling air pressure is 1.8 kg / cm. -2 The needle-starting air pressure is 2.0 kg / cm². -2 The total pressure gauge reading is 3.0 kg / cm. -2 In step six, during the combing process, the tension of section a of the combing equipment is controlled at 92 kg·cm. -2 The tension in segment b is 95 kg·cm. -2 The tension in segment c is 98 kg·cm. -2 The guide speed is 24m / min, and the combing rate is 150%.

8. The method for preparing artificial down fabric according to claim 1, characterized in that: In the shaking process of step seven, the steam time is 20 minutes, the hot air time is 20 minutes, the cold air time is 20 minutes, and the temperature is 70°C.

9. The imitation down fabric obtained by the preparation method according to any one of claims 1-8.

10. The application of the down-like fabric according to claim 9 in clothing and home textiles.

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