Single-layer anti-velvet fabric and preparation method thereof

Abstract

The present invention belongs to the technical field of fabric processing, and specifically discloses a single-layer anti-down fabric and a preparation method thereof, the method comprising providing a cellulose fabric; performing a sanding or napping treatment on the cellulose fabric; spraying or rolling a phosphoric acid system solution on the sanded or napped cellulose fabric, and performing a calendering treatment to obtain the single-layer anti-down fabric. The single-layer anti-down fabric prepared by the preparation method of the present invention has the characteristics of good softness, good air permeability and good anti-down drilling effect, and the process is simple and easy to achieve mass production.

Description

Technical Field

[0001] The invention relates to the technical field of fabric processing, and in particular to a single-layer anti-down fabric and a preparation method thereof. Background Art

[0002] The anti-drilling down mechanism of quilt core fabrics such as down quilts is mainly achieved through the physical structure and fiber properties of the fabric combined with post-finishing processing. For single-layer anti-drilling down fabrics, the following mechanisms are usually used to prevent down from drilling out of the fabric: using fine and high-density yarns to weave high-tightness fabrics, so that the fibers in the yarns are closely arranged and the gaps between the yarns are small, thereby preventing down and other fillings from drilling out. This method is relatively difficult to produce and has high costs; chemical fibers such as polyester and nylon are easy to achieve anti-drilling down function through fine denier and high density. For example, an anti-drilling down fabric for a chemical fiber quilt includes a quilt cover and chemical fibers filled inside the quilt cover. The quilt cover uses anti-drilling down fabric. The anti-drilling down fabric is obtained by selecting one of pure cotton fabrics and Tencel fabrics for anti-drilling down process treatment. The anti-drilling down process treatment is to perform a calendering process on the woven pure cotton fabric or Tencel fabric after dyeing and shaping. The width of the fabric is repeatedly stretched and retracted during the processing process, so that the weft in the fabric is bent into an S shape to fill the gaps between the fibers. At the same time, propylene glycol is added during the calendering process to increase the calendering temperature that the fabric can withstand.

[0003] The prior art also achieves the anti-down drilling effect by compounding double-layer fabrics. For example, an anti-down drilling fabric is woven from warp yarns and weft yarns, and has an inner layer fabric and an outer layer fabric; a glue layer is sprayed on the inner and outer layers of the fabric; the glue layer is provided with air holes; the positions of the air holes on the inner layer fabric and the air holes on the outer layer fabric are staggered; the inner layer fabric and the outer layer fabric are sewn together at their peripheries. By bonding two layers of fabric with staggered air holes to form a composite fabric, the fabric has a certain moisture absorption and breathability performance without producing down, but this method makes the fabric thicker and harder to the touch, affecting the comfort of sleep.

[0004] The prior art also achieves the anti-drilling effect through a weaving process, for example, an anti-drilling fabric includes a cross-woven first fabric layer and a second fabric layer, the first fabric layer and the second fabric layer are connected to each other through a front-to-back layer change, and an interlaced line for connecting the first fabric layer and the second fabric layer is formed at the front-to-back layer change. The anti-drilling fabric includes a cross-woven first fabric layer and a second fabric layer, and the first fabric layer and the second fabric layer are connected to each other through a front-to-back layer change, and the connection at the cross position is an interlaced line, and the problem of easy down drilling in the needle hole during sewing is prevented by cross-weaving a double-layer fabric. At present, some studies also provide the following methods to achieve the anti-drilling effect: a double-layer fabric is interwoven with fine denier polypropylene yarn and nylon yarn to form a filling grid, but this method is not suitable for pure cotton fabrics; the first layer of fabric is made of combed cotton fabric, which has moisture absorption and breathability, and the second layer of fabric is made of polyester filament, which can be combined with the first layer of fabric to prevent down drilling and because of the use of five two-fly satin, there will be pores between the fabric tissues, which can enhance moisture absorption and breathability, but the double-layer fabric is too thick, thereby weakening the advantages of the down quilt.

[0005] In terms of post-finishing, applying a layer of polymer coating on the surface of the anti-drilling down fabric can further enhance the density and hardness of the fabric and prevent the down from drilling out of the fabric. For example, an anti-drilling down fabric includes a base fabric layer and a porous resin layer, and the porous resin layer contains acrylic resin and silicone resin; a method for preparing a waterproof and breathable coated anti-drilling down fabric, the preparation method comprising the following steps: (1) selecting a biomass TPU film, and then gluing and laminating the biomass TPU film on the fabric; (2) the glue selected for gluing is an environmentally friendly PUR glue, and the environmentally friendly PUR glue is added with antibacterial additives and anti-mildew additives, and the mass ratio of both in the environmentally friendly PUR glue is 5-10%; (3) when gluing, the biomass TPU film is unwound on a rewinder, and the environmentally friendly PUR glue and the fabric are hot-pressed to obtain a waterproof and breathable coated anti-drilling down fabric, and the specific process parameters are: the glue amount is 10-20g / m 2 , the vehicle speed is 8-10m / min, the drying or drying temperature is 90-150℃, the hot pressing and laminating temperature is 150-165℃, the pressure is 4-6bar, and the time is 15-20s. The anti-drilling effect is achieved by using glue to cover the TPU film on the fabric; an anti-drilling fabric and a processing method thereof, spraying WS type hot melt adhesive on the textile fabric, and then laminating it with a coating material, and then undergoing a hot pressing treatment to obtain an anti-drilling fabric. Whether it is a coating or a lamination, the fabric has good anti-drilling properties, which solves the problem of velvet leakage at the pinholes. However, the fabrics prepared by the above method generally have poor air permeability and a hard feel.

[0006] Some studies have also proposed a method of adding an anti-down lining between the fabric and the filling. For example, an anti-down quilt includes a quilt cover and down. An anti-down lining is set between the quilt cover and the down. The lining is sewn and fixed to the inside of the quilt cover. The lining is filled with down and the lining completely covers the down. Although it can provide good anti-down performance, the anti-down lining is usually hard, which reduces the softness and comfort of the product, and cannot achieve anti-down for a single layer of fabric.

[0007] At present, during the dyeing and finishing process, multiple repeated calendering and rolling of windproof agents are often used to make the fabrics tighter and down-proof. For example, a down-proof fabric is prepared by the following steps: selection of grey cloth; sanding; rolling of windproof agents: the speed of the vehicle when rolling the windproof agent is 60-80m / min, specifically, the sanded fabric is passed through a windproof agent aqueous solution at a temperature of 40-55°C, and the rolling rate is 45-65%; the windproof agent includes a starch composite catalyst and a compound, and the compound is a compound formed by compounding acrylic acid acrylamide compounds and hydrophilic softener KF-896 at a mass ratio of 2-5:1; Dyeing: including dyeing liquid, reduction steaming, washing, oxidation, washing, soaping, washing, drying and rolling; the dyeing liquid includes dye, alkali sulfide, wetting agent and soda ash, and the thickness of the dyeing liquid is rolled out at a rate of 60-70%; the temperature of reduction steaming is 90-100℃, and the reduction steaming time is 40-50s; printing: the temperature of printing is 100-115℃; calendering: the calendering temperature is controlled at 105-115℃, and the speed is 30-50m / min; pre-shrinking; post-finishing. Although this method is simple to process, the resulting fabric feels hard. For another example, a down-proof fabric and a preparation method thereof include the following steps: providing a fabric; performing a sanding treatment on the fabric; performing a calendering and softening treatment on the sanded fabric; and performing flat-width water washing on the calendered and softened fabric to obtain the down-proof fabric. By repeatedly calendering the sanded fabric, the yarn becomes flat, and the gaps between the yarns are reduced, thereby achieving the purpose of down-proofing. However, the down-proofing effect of this method deteriorates with repeated use of the duvet and is not durable.

[0008] In summary, the anti-down fabrics currently on the market have the problems of poor air permeability, low comfort, poor single-layer anti-down effect, high cost, etc. In view of the above shortcomings of the prior art, if a single-layer anti-down fabric can be developed to improve the current problems of poor air permeability, hard feel, and low comfort of anti-down fabrics, it will be more conducive to the development of anti-down fabrics. Summary of the invention

[0009] In view of the above-mentioned shortcomings of the prior art, the present invention provides a single-layer anti-down fabric and a preparation method thereof to solve the technical problems of the above-mentioned anti-down fabric such as poor air permeability, hard hand feel, and low comfort.

[0010] To achieve the above and related purposes, the present invention provides a method for preparing a single-layer down-proof fabric in a first aspect, the method comprising the following steps:

[0011] Providing a cellulose fabric;

[0012] Brushing or napping of cellulose fabrics;

[0013] The cellulose fabric after the sanding or napping treatment is sprayed or rolled with a phosphoric acid system solution, and then calendered to obtain a single-layer anti-down fabric.

[0014] According to the above technical means, the purpose of the present invention is to provide a single-layer anti-down fabric containing cellulose and a preparation method thereof, which improves its anti-down drilling performance while obtaining good air permeability without affecting the comfort of the hand feel. At present, the mainstream varieties of down quilt fabrics are three categories: pure cotton, polyester cotton and pure polyester. Cotton fiber is more likely to absorb moisture and expand than polyester fiber, so the durability of anti-down drilling is slightly worse; polyester fiber has better anti-down drilling durability, but it is easy to generate static electricity and cannot be biodegraded. Therefore, the present invention performs a series of finishing on this part of the cellulose fabric to obtain a good anti-down effect without reducing the original soft hand feel of the cellulose fabric. The present invention forms ultra-fine down on the treated side of the cellulose fabric by grinding or napping the cellulose fabric, and sprays or rolls one side of the down with a phosphoric acid system solution, so that the down is lodged and adhered to the surface of the cellulose fabric, forming a number of fine micropores, the size of the micropores is smaller than the diameter of the down filaments, thereby achieving anti-down and maintaining good air permeability.

[0015] Furthermore, the cellulose fabric contains 30-100% cellulose, and the cellulose fabric is subjected to sanding or napping treatment after pre-treatment.

[0016] According to the above technical means, the preparation method of the present invention is not only for cellulose fabrics such as polyester and cotton, but also for cellulose fabrics such as Tencel, and has good universality. The pre-treatment of the present invention can include singeing, desizing, scouring, bleaching and mercerizing, etc., to remove natural impurities contained in the fiber, as well as the slurry and oil stains applied during the textile processing, so that the fiber can give full play to its excellent quality, and make the fiber have white, soft performance and good permeability to meet the requirements of clothing, home textiles, etc., and provide qualified semi-finished products for dyeing, printing and finishing. The surface of the cellulose fabric after pre-treatment is smooth and flat, which is convenient for subsequent processing.

[0017] Furthermore, the sanding treatment is carried out using a sanding machine, the cloth feeding speed of the sanding machine is 12-19 m / s, the cloth feeding tension is 0.7-2.8 MPa, the pressure of the sanding roller is 12-22 kg, and the rotation speed of the sanding roller is 800-1000 r / min.

[0018] According to the above technical means, the suede sanding machine of the present invention includes a carbon suede sanding machine and a ceramic suede sanding machine, and the suede sanding effect is adjusted by controlling the operating parameters of the suede sanding machine. The present invention can perform single-sided or double-sided suede sanding or napping treatment on the cellulose fabric. The present invention forms a fluff effect on the surface of the cellulose fabric through suede sanding or napping treatment. Compared with napping, the fluff of the sanding is short and dense, and the hair feels fine. The softness and warmth retention of the cellulose fabric treated with sanding or napping are further enhanced.

[0019] Furthermore, the cellulose fabric after the sanding or napping treatment is dyed or printed, stretched and shaped, and pre-shrunk, and then sprayed or rolled with a phosphoric acid system solution.

[0020] According to the above technical means, the cellulose fabric treated with sanding or napping in the present invention can be dyed or printed, stretched, shaped and pre-shrunk to improve the aesthetics of the cellulose fabric, improve the feel, slippage, color, width, strength, appearance, etc. of the cellulose fabric to a certain extent, and make the final single-layer anti-down fabric shrink in the warp and weft directions in advance to a certain amount, thereby reducing the shrinkage rate of the single-layer anti-down fabric and meeting the quality requirements of home textile processing.

[0021] Furthermore, the phosphoric acid system solution includes 81-85 wt % industrial grade phosphoric acid spray.

[0022] Furthermore, the calendering process includes stretch roller calendering, pressure roller calendering and widening roller calendering, wherein:

[0023] The calendering time of the cloth stretching roller is 1 to 3 seconds;

[0024] The roller pressure is 50-200MPa;

[0025] The expanding width of the expanding roller and / or the cloth feeding width is 0.8-1.2 m, the pH of the cellulose fabric surface is adjusted to 7-9, and the processing speed is 10-50 m / min.

[0026] According to the above technical means, when the present invention sprays or rolls the phosphoric acid system solution on the cellulose fabric, the cellulose fluff in the fabric swells, and the rolled down fluff adheres to each other, forming a molten plastic form on the surface of the cellulose fabric, and forming a fine fiber network under the action of external pressure. Because the fluff is relatively fine and the hole diameter is smaller than the diameter of the down fibers, it plays a role in preventing down. In addition, the calendering treatment can give the surface of the cellulose fabric a gloss, and the calendering of the present invention can be repeated calendering. Since the phosphoric acid system solution is sprayed, the pH of the fabric surface is adjusted to neutralize the acid. Since the pH of the fabric production process is slightly alkaline, the pH is adjusted to 7-9. The present invention can be a calendering roller with a phosphoric acid system solution, or it can be a calendering roller that sprays the fluffy side of the cellulose fabric.

[0027] Furthermore, after the cellulose fabric is calendered, it is washed, patted with hot air flow, and dried to obtain a single-layer anti-down fabric. Preferably, the drying temperature can be 81-84°C.

[0028] According to the above technical means, the present invention washes the cellulose fabric after calendering, which can be specifically open-width washing, including the use of ultrasonic oscillation technology, so that the washing is more thorough. The present invention performs hot air flow impact after washing, so that the hairiness that has fallen down due to calendering becomes fluffy again, achieving an effect similar to soft "matte", and neutralizes the slightly alkaline nature of the cellulose fabric by washing, so that it meets the pH range required by human skin during subsequent home textile use. Specifically, the open-width washing of the present invention is to use an open-width washing machine to wash the cellulose fabric and perform hot air flow slapping and drying steps. Since there is a sanding treatment in the above preparation process, it is inevitable that broken short fiber wadding will be produced, and in the calendering treatment, the sanded hairiness is re-attached to the yarn surface, reducing the sanding feeling. Therefore, the purpose of open-width washing is, first, to wash away the dust, chemicals and other dirt adsorbed on the surface of the cellulose fabric, and second, to make the hairiness attached to the surface of the fabric fluffy again by hot air flow slapping. The open-width washing in the present invention includes ultrasonic oscillation washing, squeezing, and two-stage high-speed hot air flow slapping and drying.

[0029] Further, the cellulosic fabrics include plain, twill and satin fabrics.

[0030] According to the above technical means, because the present invention performs a sanding or napping treatment on both sides or one side of the cellulose fabric, if the fluff on only one side of the cellulose fabric is bonded into a web, it does not affect the feel of the other side. Therefore, the organizational structure of the fiber fabric of the present invention includes but is not limited to plain weave, twill and satin weave, and has a soft feel.

[0031] Furthermore, the calendering treatment also includes repeatedly calendering the cellulose fabric.

[0032] The second aspect of the present invention provides a method for preparing the single-layer anti-down fabric as described above to prepare the single-layer anti-down fabric.

[0033] The beneficial technical effects of the present invention are:

[0034] The present invention solves the problems of poor air permeability, non-soft hand feeling and low comfort of existing single-layer anti-down fabrics. The present invention selects cellulose-containing fabrics for sanding or napping treatment, sprays or rolls a phosphoric acid system solution on the side with the down, and performs repeated calendering, so that the down on the surface of the cellulose fabric is self-adhesive, thereby forming a single-layer anti-down fabric. The preparation method of the present invention improves the processing procedures and controls the process parameters, so that the cellulose fabric has air permeability and softness on the basis of ensuring the anti-down performance of the cellulose fabric. The present invention controls the process and parameters of the calendering treatment to make the cellulose fabric have the characteristics of soft hand feeling and soft luster. The preparation method of the present invention utilizes the swelling bonding of the fiber itself, and the fiber or yarn surface is not coated with an auxiliary agent, so the air permeability is good, and the process is simple, and mass production is easy to achieve.

[0035] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 The present invention is a flow chart of the preparation method of the single-layer down-proof fabric. DETAILED DESCRIPTION

[0038] The following will describe the embodiments of the present invention with reference to the preferred embodiments, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention, not for limiting the scope of protection of the present invention.

[0039] Unless otherwise defined, all technical and / or scientific terms used herein have the same meaning as the general understanding of a person of ordinary skill in the art to which the present invention belongs. It should be understood that certain features of the present invention (described in the context of separate embodiments for clarity) may also be provided in combination in a single embodiment. On the contrary, multiple features of the present invention (described in the context of a single embodiment for brevity) may also be provided separately or in any suitable combination or in any other described embodiment of the present invention when appropriate. Certain features described in the context of various embodiments will not be considered as essential features of those embodiments unless the embodiment is inoperable without those elements. The present invention is further described below by specific specific examples. It should be noted that wt% in the present invention represents weight percentage, and it should be noted that the specific process conditions and results described in the embodiments of the present invention are only used to illustrate the present invention, and cannot be used to limit the scope of protection of the present invention. All equivalent changes or modifications made according to the spirit and essence of the present invention should be included in the scope of protection of the present invention.

[0040] In the following description, numerous details are discussed to provide a more thorough explanation of embodiments of the present invention; however, it is apparent to one skilled in the art that embodiments of the present invention may be practiced without these specific details.

[0041] The present invention provides a method for preparing a single-layer anti-velvet fabric, the method comprising the following steps:

[0042] Step S110, providing a cellulose fabric.

[0043] Preferably, the cellulose fabric contains 30-100% cellulose.

[0044] Step S120, performing a sanding or a napping treatment on the cellulose fabric.

[0045] Preferably, the cellulose fabric is subjected to single-sided or double-sided sanding or napping treatment after being subjected to pre-treatments such as singeing, desizing, scouring, bleaching, and mercerizing. The sanding treatment is performed using a carbon sanding machine or a ceramic sanding machine. During the sanding treatment, the feed speed of the sanding machine is 12 to 19 m / s, the feed tension is 0.7 to 2.8 MPa, the pressure of the sanding roller is 12 to 22 kg, and the rotation speed of the sanding roller is 800 to 1000 r / min.

[0046] Step S130, spraying or rolling the cellulose fabric after the sanding or napping treatment with a phosphoric acid system solution, and performing calendering treatment to obtain a single-layer anti-down fabric.

[0047] Preferably, after dyeing or printing, tentering, setting, pre-shrinking and other treatments, the cellulose fabric after sanding or napping treatment is sprayed or rolled with a phosphoric acid system solution, the phosphoric acid system solution used is 81-85wt% industrial grade phosphoric acid spray, and calendering treatment is performed, the stretching roller rolling time is 1-3s; the pressure of the pressing roller is 50-200MPa; the expanding width of the expanding roller / the width of the feeding cloth is 0.8-1.2; the pH of the neutralized cloth surface is 7-9; the processing speed is 10-50m / min; the drying temperature is 81-84°C, ultrasonic oscillation technology is used for water washing, hot air flow is slapped, and drying is performed to obtain a single-layer anti-velvet fabric.

[0048] Preferably, the cellulosic fabrics include plain, twill and satin fabrics.

[0049] Example 1 Sanding process - single-sided sanding

[0050] A pure cotton fabric with a warp yarn of 60s combed pure cotton yarn, a weft yarn of 60s pure cotton yarn, a density of 200×160 per inch, and a 5 / 3 (5 pieces and 3 flies) satin structure is selected. After the fabric is subjected to treatments such as singeing, desizing, scouring, bleaching, and mercerizing, the fabric is subjected to single-sided sanding treatment. After treatments such as dyeing or printing, tentering setting, and preshrinking, the side with the fluff is sprayed with industrial-grade phosphoric acid with a concentration of 81wt%, and after repeated calendering treatment with a calendering roller, the fabric is soaked in water for 10 minutes and then washed with water until the surface of the cellulose fabric is neutral, hot air flow is slapped, and the cellulose fabric is dried at a drying temperature of 81°C and a drying time of 16 minutes to obtain a single-sided sanded single-layer anti-velvet fabric.

[0051] Example 2 Sanding process - double-sided sanding

[0052] A pure cotton fabric with a warp of 120s combed pure cotton yarn, a weft of 120s pure cotton yarn, a density of 250×250 per inch and a structure of 5 / 3 satin is selected. The fabric is subjected to treatments such as singeing, desizing, scouring, bleaching and mercerizing, and then subjected to double-sided sanding. After dyeing or printing, tentering, shaping and pre-shrinking, the side with the fluff is sprayed with industrial-grade phosphoric acid with a concentration of 85wt%, and the fabric is repeatedly calendered by a calendering roller, and then soaked in water for 10 minutes and washed until the surface of the cellulose fabric is neutral, and then slapped by hot air flow, and the cellulose fabric is dried at a drying temperature of 81°C and a drying time of 20 minutes to obtain a single-sided sanded single-layer anti-velvet fabric.

[0053] Example 3: Roughening process - single-sided roughening

[0054] A pure cotton fabric with 80s combed pure cotton yarn as warp and 80s pure cotton yarn as weft, a density of 200×200 per inch and a 5 / 3 (5 pieces and 3 flies) satin structure is selected. After being subjected to treatments such as singeing, desizing, scouring, bleaching and mercerizing, the fabric is subjected to single-sided napping treatment. After being subjected to treatments such as dyeing or printing, tentering setting and preshrinking, the side with the nap is sprayed with industrial-grade phosphoric acid with a concentration of 81wt%, and after being repeatedly calendered by a calendering roller, the fabric is soaked in water for 10 minutes and then washed with water until the surface of the cellulose fabric is neutral, hot air flow is slapped, and the cellulose fabric is dried at a drying temperature of 84°C and a drying time of 18 minutes to obtain a single-sided nap-proof single-layer fabric.

[0055] Example 4: Roughening process - double-sided roughening

[0056] A fabric with 80s combed pure cotton yarn as warp, 50D polyester as weft, a density of 230×175 per inch and a plain weave structure is selected. After being subjected to treatments such as singeing, desizing, scouring, bleaching and mercerizing, the fabric is subjected to double-sided napping treatment. After being subjected to treatments such as dyeing or printing, tentering setting and preshrinking, the side with the nap is sprayed with industrial-grade phosphoric acid with a concentration of 85wt%, and after being repeatedly calendered by a calendering roller, the fabric is soaked in water for 10 minutes and then washed until the surface of the cellulose fabric is neutral, and then slapped by hot air flow, the cellulose fabric is dried at a drying temperature of 84°C and a drying time of 22 minutes to obtain a single-sided nap-proof single-layer fabric.

[0057] Example 5: Single-sided sanding

[0058] A fabric with 50D polyester warp yarn, 60s pure cotton yarn in weft yarn, a density of 200×100 per inch and a plain weave structure is selected. After being subjected to treatments such as singeing, desizing, scouring, bleaching and mercerizing, the fabric is subjected to single-sided sanding treatment. After being subjected to treatments such as dyeing or printing, tentering setting and preshrinking, the side with the fluff is sprayed with industrial-grade phosphoric acid with a concentration of 81wt%, and after being repeatedly calendered by a calendering roller, the fabric is soaked in water for 10 minutes and then washed until the surface of the cellulose fabric is neutral, and then the cellulose fabric is patted by hot air flow and dried at a drying temperature of 81°C for a drying time of 15 minutes to obtain a single-sided sanded single-layer anti-velvet fabric.

[0059] Example 6 Double-sided sanding

[0060] A fabric with 50D polyester warp yarn, 80s pure cotton yarn in weft yarn, a density of 200×130 per inch and a plain weave structure is selected. After being subjected to treatments such as singeing, desizing, scouring, bleaching and mercerizing, the fabric is subjected to double-sided sanding treatment. After being subjected to treatments such as dyeing or printing, tentering setting and preshrinking, the side with the fluff is sprayed with industrial-grade phosphoric acid with a concentration of 85wt%, and after being repeatedly calendered by a calendering roller, the fabric is soaked in water for 10 minutes and then washed until the surface of the cellulose fabric is neutral, and then the cellulose fabric is patted by hot air flow and dried at a drying temperature of 81°C for a drying time of 22 minutes to obtain a single-sided sanded single-layer anti-velvet fabric.

[0061] Performance Testing

[0062] Air permeability test: According to the national standard GB / T 5453-1997, the air permeability test was carried out on the single-layer anti-down fabrics prepared in Examples 1 to 6. The test results are shown in Table 1.

[0063] Down-proof test: According to the enterprise standard QB / T 1193-2012, the single-layer down-proof fabrics prepared in Examples 1 to 6 were subjected to a down-proof test. The test results are shown in Table 2.

[0064] Table 1 Air permeability of single-layer anti-velvet fabrics in Examples 1 to 6

[0065]

[0066]

[0067] It can be seen from Table 1 that the air permeability of the single-layer anti-down fabrics of Examples 1 to 6 prepared by the preparation method of the present invention is all above 9.6 mm / s. Compared with the air permeability of about 2.8 of the anti-down fabrics obtained by using a coating method, the air permeability of the single-layer anti-down fabrics prepared by the preparation method of the present invention is increased by 243%, indicating that the single-layer anti-down fabric of the present invention has good air permeability, which is significantly improved compared with the prior art.

[0068] Table 2 Anti-down drilling test results of single-layer anti-down fabrics in Examples 1 to 6

[0069]

[0070] It can be seen from Table 2 that the number of down drilled in the single-layer anti-down fabrics of Examples 1 to 6 prepared by the preparation method of the present invention is all within 10, and has a good anti-down drilled effect. This is because the down of the single-layer anti-down fabrics prepared by the preparation method of the present invention is bonded to form a cross-net structure with small pores less than 15 μm, which is smaller than the diameter of the down fibers, thereby forming a good anti-down effect.

[0071] The preparation method of the present invention improves the processing procedures and controls the process parameters, so that the cellulose fabric has air permeability and softness on the basis of ensuring the anti-down performance of the cellulose fabric; and the calendering treatment is performed by controlling the process and parameters of the calendering treatment, so that the cellulose fabric has the characteristics of soft hand feeling and soft gloss. The preparation method of the present invention utilizes the swelling bonding of the fiber itself, and the fiber or yarn surface is not coated with an auxiliary agent, so the air permeability is good, and the process is simple, and it is easy to realize mass production, has universality, and is suitable for large-scale promotion.

[0072] The present invention also provides a method for preparing the single-layer anti-down fabric as described above, and the single-layer anti-down fabric has good air permeability, softness and anti-down effect.

[0073] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A method for preparing a single-layer anti-down fabric, characterized in that: The method comprises the following steps: Providing a cellulose fabric; The cellulose fabric is subjected to a sanding or napping treatment; The cellulose fabric after the sanding or napping treatment is sprayed or rolled with a phosphoric acid system solution, and then calendered to obtain the single-layer anti-down fabric, wherein the phosphoric acid system solution includes 81-85wt% industrial-grade phosphoric acid spray; The calendering process includes stretch roller calendering, pressure roller calendering and widening roller calendering, wherein: The calendering time of the cloth stretching roller is 1 to 3 seconds; The pressure of the pressing roller is 50-200 MPa; The expanding width and / or fabric feeding width of the expanding roller is 0.8-1.2 m, the pH value of the cellulose fabric surface is adjusted to 7-9, and the processing speed is 10-50 m / min.

2. The method for preparing a single-layer anti-down fabric according to claim 1, characterized in that: The cellulose fabric contains 30-100% cellulose, and the cellulose fabric is subjected to the sanding or napping treatment after the pre-treatment.

3. The method for preparing a single-layer anti-down fabric according to claim 1, characterized in that: The sanding treatment is performed by a sanding machine, the cloth feeding speed of the sanding machine is 12-19 m / s, the cloth feeding tension is 0.7-2.8 MPa, the pressure of the sanding roller is 12-22 kg, and the rotation speed of the sanding roller is 800-1000 r / min.

4. The method for preparing a single-layer anti-down fabric according to claim 1, characterized in that: The cellulose fabric after the sanding or napping treatment is subjected to dyeing or printing, tentering setting, and pre-shrinking treatment, and then sprayed or rolled with the phosphoric acid system solution.

5. The method for preparing a single-layer anti-down fabric according to claim 1, characterized in that: After the calendering treatment, the cellulose fabric is washed, beaten by hot air flow, and dried to obtain the single-layer anti-down fabric, wherein the drying temperature is 81-84°C.

6. The method for preparing a single-layer anti-down fabric according to claim 1, characterized in that: The cellulose fabrics include plain, twill and satin fabrics.

7. The method for preparing a single-layer anti-down fabric according to claim 1, characterized in that: The calendering treatment further comprises repeatedly calendering the cellulose fabric.

8. A single-layer anti-down fabric made by the method for making a single-layer anti-down fabric as claimed in any one of claims 1 to 7.

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