Preparation process of flower grey single-sided yoga fabric
Through specific yarn ratio and process treatment, a gray single-sided yoga fabric is prepared, which solves the problems of insufficient tensile performance, impermeability and soft feel in the existing technology, and achieves breathability and comfort during yoga exercises.
Patent Information
- Application Number
- CN202510838776.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-23
- Publication Date
- 2025-10-14
AI Technical Summary
Existing gray yoga fabrics are difficult to achieve excellent stretchability, impermeability and soft feel, and are easy to show through the flesh and lack breathability during yoga exercises.
By adopting a specific yarn length ratio of composite low-stretch yarn and spandex, combined with knitting technology and unique dyeing technology, including sanding and fleece processing, a gray single-sided yoga fabric with good elasticity and tensile properties is produced.
The obtained fabric is impermeable to the flesh during yoga exercise, has good air permeability, and is soft to the touch, is suitable for yoga sportswear, and has good wearing comfort and applicability.
Smart Images
Figure CN120776510A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of fabrics, in particular to a preparation process of a single-sided ash-colored yoga fabric. BACKGROUND
[0002] With the improvement of people's consumption level, the types and colors of clothes are also changing. Ash color (gray tone mixed color) has the stability of gray color, and is rich in levels due to color mixing, easy to match other colors, belongs to neutral and versatile for various occasions; and the gray tone similar to "Morandi color system" can reduce color saturation and present soft texture, which meets the trend of "low-key luxury" in modern aesthetics (such as Nordic style, wabi-sabi style). The mixed color effect of ash can cover up minor stains and wear, suitable for daily high-frequency wear, durable and dirty. In addition, the gray tone is not seasonal, showing temperature in winter and coolness in summer, with no boundaries across seasons. Under the joint action of aesthetic trend, practical demand and psychological factors, consumers give more and more preference to ash (gray tone mixed color) colored clothes.
[0003] Ash-colored sports clothes applied to yoga and regular sports occasions are also more and more popular. Ash fabric is divided into short fiber fabric and filament fabric. Conventional short fiber ash fabric is mostly used for casual clothes due to the limitation of yarn count, structure and cost, and is difficult to make great achievements in yoga sports fabric. The filament modified yarn fabric can only modify the surface fibers of the yarn, and the modified groups are not firm, which can cause unstable ash effect and difficult color reproducibility. Moreover, the finished yoga sports fabric is relatively thick, and the stretchability is not enough. The fabric with enough elasticity is relatively thin, and the problem of see-through skin is prone to occur at the hip and knee positions during yoga. SUMMARY
[0004] In order to solve the problems in the prior art, the present application provides a preparation process of an ash single-sided yoga fabric, which selects composite low-elasticity yarn with both bulkiness and softness, and then matches with knitting process and raising process to obtain excellent yoga fabric which can balance excellent stretchability and anti-transparency.
[0005] The preparation process of the ash single-sided yoga fabric provided by the present application adopts the following technical scheme: A preparation process of an ash single-sided yoga fabric includes the following preparation steps: S1, yarn preparation: the fabric includes 81-83% polyester and 17-19% spandex by weight percentage, the polyester adopts 100D / 144F composite low-elasticity yarn of Shenghong Group, and the spandex adopts 70D spandex of South Korea Xiaoxing, the 100D / 144F composite low-elasticity yarn is prepared by composite of 50D / 72F round light cationic polyester low-elasticity yarn and ordinary 50D / 72F semi-light polyester yarn; S2, woven fabric: the yarn length of the composite low stretch yarn is 28-32 cm / 100 needles, the yarn length of the spandex is 9-10 cm / 100 needles, the woven fabric is woven by a 32-needle 34-inch German Meyer weft-knitting single-sided circular knitting machine, and the fabric is knitted by using weft-knitting double-sided plain stitch, wherein the spandex is knitted by using a mold-to-fall weaving method; S3, fabric oil removal and drying; S4, fabric pre-setting; S5, sanding: the fabric surface and the fabric bottom of the fabric are respectively subjected to heavy sanding; S6, fabric dyeing; S7, fabric loosening and drying; S8, sanding and scratching, the fabric surface is subjected to light sanding, and the fabric bottom is subjected to light scratching; S9, fabric post-whole shaping.
[0006] By adopting the above technical scheme, the 100D / 144F composite low stretch yarn in the application is prepared by compounding 50D / 72F round light cationic polyester low stretch yarn and common 50D / 72F semi-light polyester yarn, the cationic polyester is modified by cationization in the polymerization stage, instead of cationization on the surface of the yarn, so that the quality of the obtained composite low stretch yarn is stable, the fabric prepared by the yarn has low cost and convenient color control, and the fabric can be used for both gray and pure color, in combination with the yarn length of the two kinds of yarns, double-sided plain stitch and dyeing and finishing process, the obtained fabric has good elasticity and stretching performance, comfortable cotton feeling and good air permeability, and is suitable for application in yoga fabric.
[0007] In addition, by adopting the composite sanding process of double-sided sanding of the fabric, light sanding of the fabric surface and light sanding of the fabric bottom after dyeing, the obtained fabric has the following advantages: 1. good elastic elongation and good recovery performance, can form good support to the body, fashionable and beautiful, 2. good air permeability and no meat penetration, and 3. soft and comfortable cotton feeling.
[0008] The inventor finds through experiments that when the yarn length of the composite low stretch yarn and the spandex is lower than the limit of the application, the obtained fabric is relatively compact, so when the fabric is used for yoga pants, the hip and knee strong support opening is completely not transparent, but due to the compact fabric, the air permeability is poor, the fabric hand feeling is hard and rigid, the cotton feeling is not fluffy, the elastic elongation is small when stretched, and the wear comfort and applicability are not good.
[0009] When the yarn length of the composite low stretch yarn and the spandex is higher than the limit of the application, when the fabric is used for yoga pants, the hip and knee strong support opening is obviously transparent, the air permeability of the fabric is excellent, the softness and fluffy cotton feeling of the fabric are excellent, the elastic elongation is excellent when stretched, and the wear comfort and applicability are slightly poor.
[0010] Therefore, when the length of the yarn of the composite low-elasticity filament and spandex is within the range defined in the application, the fabric has good elasticity, and when used as a yoga fabric, neither the flesh is transparent nor the fabric has good air permeability, and has good comfort and applicability.
[0011] When the process of heavy sanding of the fabric surface and the fabric bottom is removed, and the process of light sanding of the fabric surface and light sanding of the fabric bottom is directly performed after dyeing and drying, the obtained fabric has a very hard and solid hand feeling, lacks cotton feeling, the fabric surface is granular, has poor anti-pilling performance, the spandex is severely damaged, the fabric elasticity is severely attenuated, and the color change of the fabric surface after sanding is large, and the fabric elasticity cannot meet the requirements of yoga sports fabric.
[0012] When only the heavy sanding process of the fabric bottom is removed, and the process of light sanding of the fabric surface and light sanding of the fabric bottom is directly performed after dyeing and drying, the obtained fabric has a very hard and solid hand feeling, lacks cotton feeling, the spandex is severely damaged, the fabric elasticity is severely attenuated, and the wearing effect is affected.
[0013] Preferably, the heavy sanding in step S5 has a sanding roller speed of 1350-1450 r / min, a tension of 25 N, a sanding paper of 600 mesh, and a fabric passing speed of 19-21 m / min.
[0014] Preferably, the light sanding in step S8 has a sanding roller speed of 1550-1650 r / min, a tension of 15 N, a sanding paper of 600 mesh, and a fabric passing speed of 19-21 m / min; and the light sanding has a sanding drum speed of 95-105 r / min, a reverse needle of 3% (equivalent to a needle tip rotating speed of the fabric line speed of 3%), a tension of 2 KG, and a fabric passing speed of 19-21 m / min.
[0015] Preferably, the oil removal temperature in step S3 is 70-90°C, the drying temperature is 128-132°C, and the drying time is 20-28 s.
[0016] Preferably, the embryo cloth pre-setting temperature in step S4 is 195-200°C, and the time is 18-22 s.
[0017] Preferably, the dyeing conditions in step S6 are 125-135°C, and the time is 38-42 min.
[0018] Preferably, the dye used in step S6 includes C.I. Basic Yellow 13, C.I. Basic Red 22, C.I. Basic Blue 42, C.I. Disperse Yellow 114, C.I. Disperse Red 167, and C.I. Disperse Blue 75.
[0019] By adopting the technical scheme, the energy-saving process of one-bath dyeing of the unique cationic dyes (C.I. Basic Yellow 13, C.I. Basic Red 22, C.I. Basic Blue 42) and disperse dyes (C.I. Disperse Yellow 114, C.I. Disperse Red 167, C.I. Disperse Blue 75) is adopted, the dyeing cost is controlled, the spandex elastic damage is reduced, the soft cotton feeling of the finished fabric is achieved, and the effect that the stretch recovery performance is excellent is achieved.
[0020] Preferably, the finishing formula comprises 8-12 g / L of heat-reactive polyurethane, 8-12 g / L of amino-functional silicone and 0.2-0.4 g / L of DL-hydroxy succinic acid.
[0021] Preferably, the finishing condition is 100-110 DEG C, and the time is 9-12 s.
[0022] Preferably, the rotation speed of the weft-knitting single-face large circular knitting machine is 25-35 r / min.
[0023] In summary, the present application has the following beneficial effects: The present application selects the yarn, adopts the composite raising process of the fabric and the cooperation of the cationic dyes and the disperse dyes in the dyeing process, so that the obtained fabric has good elasticity and stretch performance, comfortable cotton feeling, and will not appear the problem of clothes penetrating the skin in the yoga movement, and can form a good supporting effect on the body shape, highlight the perfect body shape, thereby being widely applied to the yoga fabric. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 is the weaving structure schematic diagram of the fabric of the present application. DETAILED DESCRIPTION
[0025] The present application is further described in detail below in combination with the drawings. All reagents not indicated by the manufacturer are conventional reagent products that can be obtained by market purchase.
[0026] Example 1 A preparation process of a flower ash single-face yoga fabric, comprising the following preparation steps: S1, yarn preparation: the fabric comprises 82% of polyester and 18% of spandex according to the weight percentage, the polyester adopts 100D / 144F composite low-elasticity silk of Shenghong Group, and the spandex adopts 70D spandex of South Korea Xiaoxing, the 100D / 144F composite low-elasticity silk is prepared by compounding 50D / 72F round light cationic polyester low-elasticity silk and common 50D / 72F semi-light polyester yarn. S2, woven fabric: composite low stretch yarn length of 30 cm / 100 needles, spandex yarn length of 10 cm / 100 needles, woven fabric with 32 needle 34 inch German Meyer weft knitting single-sided circular knitting machine, the speed of weft knitting single-sided circular knitting machine is 30 r / min, the fabric is knitted by weft knitting double-sided plain weave, the spandex is knitted by the weaving method of model falling, the weaving structure schematic diagram is shown in Figure 1 ; S3, fabric oil removal and drying: the oil removal agent is HUMECTOL LYS of Anguo Chemical (China) Co., Ltd., the dosage is 3.0 g / L, water, the oil removal temperature is 80℃, the oil removal machine speed is 20 m / min, the fabric is put into the setting machine needle chain after the oil removal machine, and then into the setting machine oven for drying, the setting machine speed is 20 m / min, the drying temperature is 130℃, and the drying time is 25 s; S4, fabric pre-setting: the fabric obtained in step S3 is pre-set by the setting machine, the setting temperature is 200℃, and the time is 20 s; S5, sanding: the fabric surface and the fabric bottom of the fabric obtained in step S4 are respectively sanded by using a sanding machine, the sanding roller speed is 1400 r / min, the tension is 25 N, the sanding paper is 600 mesh, and the fabric machine speed is 20 m / min; S6, fabric dyeing: the fabric is dyed by using C.I. Basic Yellow 130.001%, C.I. Basic Red 220.001%, C.I. Basic Blue 420.01% of Zhejiang Runtai Chemical Group Co., Ltd., C.I. Disperse Yellow 114 0.02%, C.I. Disperse Red 167 0.04%, and C.I. Disperse Blue 751.0% of Zhejiang Longsheng Group Co., Ltd., the dyeing conditions are 130℃, and the time is 40 min, then the fabric is treated after dyeing, the dispersing agent is added for multiple washing, the fabric body pH is adjusted by adding acid, and the fabric is discharged from the vat; S7, fabric opening and drying: the rope-shaped fabric discharged from the vat is pressed and opened by using a water press, and then dried by a setting machine, the drying conditions are 130℃, and the drying time is 15 s; S8, napping and teasing, the fabric surface obtained in step S7 is lightly napped by using a double-sided napping machine, the napping roller speed is 1600 r / min, the tension is 15 N, the napping sandpaper is 600 mesh, and the fabric passing speed is 20 m / min, so as to enhance the cotton feeling and softness of the fabric; the fabric bottom is lightly teased by using a 36-roller high-speed teasing machine, the light teasing is that the large drum speed of teasing is 100 r / min, the reverse needle is 3% (equivalent to the linear speed of the needle tip rotating faster than the fabric linear speed by 3%), the tension is 2 KG, and the fabric passing speed is 20 m / min, so that the fabric bottom reaches the ideal effect of teasing, and the damage of teasing to the spandex is reduced as much as possible; S9, post-finishing of the whole fabric, the finishing liquid formula is 10 g / L of hot-reactive polyurethane resin (purchased from Anguo Chemical (China) Co., Ltd., model Hydroperm RPU liquid), 10 g / L of amino-functional silicone (Zhongshan Baoao Ge Trading Co., Ltd., model SOFTENER L606), 0.3 g / L of DL-hydroxy succinic acid (Fujian Province Jinjiang Xinde Mei Chemical Co., Ltd.), and water, the post-finishing temperature is 110°C, and the time is 10 s.
[0027] Example 2 A preparation process of a flower ash single-sided yoga fabric, comprising the following preparation steps: S1, yarn preparation: the fabric includes 81% of polyester and 19% of spandex by weight percentage, the polyester adopts 100D / 144F composite low-elasticity yarn of Shenghong Group, and the spandex adopts 70D spandex of South Korea Xiaoxing, the 100D / 144F composite low-elasticity yarn is prepared by compounding 50D / 72F round light cationic polyester low-elasticity yarn and common 50D / 72F semi-light polyester yarn; S2, knitted fabric: the yarn length of the composite low-elasticity yarn is 28 cm / 100 needles, the yarn length of the spandex is 9 cm / 100 needles, a 32-needle 34-inch German Mayer weft-knitting single-sided circular machine is used to knit the fabric, the rotating speed of the weft-knitting single-sided circular machine is 25 r / min, the weft-knitting double-sided plain weave is used to knit the fabric, the spandex adopts the weaving method of module, and the knitting structure schematic diagram is as shown in Figure 1 ; S3, oil removal and drying of the fabric: the oil removal agent adopts HUMECTOL LYS of Anguo Chemical (China) Co., Ltd., the dosage is 3.0 g / L, the water, the oil removal temperature is 70°C, the oil removal machine speed is 15 m / min, after the fabric is taken out of the oil removal machine, the fabric is fed to the needle chain of the setting machine, and then the fabric is fed into the setting machine oven for drying, the setting machine speed is 15 m / min, the drying temperature is 128°C, and the drying time is 20 s; S4, pre-setting of the fabric: the setting machine pre-sets the fabric obtained in step S3, the setting temperature is 195°C, and the time is 22 s; S5, sanding: using sanding machine to sand the fabric surface and the fabric bottom of the fabric obtained in step S4 respectively, the sanding roller speed is 1350 r / min, the tension is 25 N, the sanding paper is 600 mesh, and the fabric passing speed is 19 m / min; S6, fabric dyeing: using C.I. Basic Yellow 130.001% of Zhejiang Lintu Chemical Group Co., Ltd., C.I. Basic Red 22 0.001%, C.I. Basic Blue 42 0.01% of Anguo (China) Chemical, C.I. Disperse Yellow 114 0.02%, C.I. Disperse Red 167 0.04%, and C.I. Disperse Blue 75 1.0% of Zhejiang Longsheng Group Co., Ltd. to dye the fabric, the dyeing conditions are 125°C and 42 min, and then the fabric is subjected to dyeing post-treatment, multiple washing is performed by adding a dispersing agent, the pH of the fabric body is adjusted by an acid, and the fabric is discharged from the cylinder; S7, fabric loosening and drying: using a water pressing machine to press water and loosen the rope-shaped fabric discharged from the cylinder, and then drying on a setting machine, the drying conditions are 130°C and 15 s; S8, sanding and napping: using a double-sided sanding machine to lightly sand the fabric surface obtained in step S7, the sanding roller speed is 1550 r / min, the tension is 15 N, the sanding paper is 600 mesh, the fabric passing speed is 19 m / min, the cotton feeling and softness of the fabric are enhanced; a 36-roller high-speed napping machine is used to lightly nap the fabric bottom, the lightly napping is that the large drum speed of the napping is 95 r / min, the reverse needle is 3% (equivalent to the linear speed of the needle tip rotating faster than the fabric linear speed by 3%), the tension is 2 KG, and the fabric passing speed is 19 m / min, so that the napping degree of the fabric bottom reaches an ideal effect, and the damage to the spandex is reduced as much as possible; S9, fabric post-whole setting: the finishing liquid formula is 8 g / L of a hot-reactive polyurethane resin (purchased from Anguo Chemical (China) Co., Ltd., model number Hydroperm RPU liquid), 8 g / L of an amino-functional silicone (Zhongshan Baoaoge Trading Co., Ltd., model number SOFTENER L606), 0.2 g / L of DL-hydroxy succinic acid (Fujian Jining Xinde Chemical Co., Ltd.), and water, the post-finishing temperature is 100°C, and the time is 12 s.
[0028] Example 3 A preparation process of a flower ash single-sided yoga fabric, comprising the following preparation steps: S1, yarn preparation: the fabric includes 83% polyester and 17% spandex by weight percentage, the polyester adopts 100D / 144F composite low-elasticity yarn of Shenghong Group, the spandex adopts 70D spandex of South Korea Xiaoxing, and the 100D / 144F composite low-elasticity yarn is prepared by compounding 50D / 72F round light cationic polyester low-elasticity yarn and common 50D / 72F semi-light polyester yarn; S2, knitting of the fabric: the yarn length of the composite low-elasticity yarn is 32 cm / 100 needles, the yarn length of the spandex is 10 cm / 100 needles, a 32-needle 34-inch German Mayer weft-knitting single-face circular machine is used to knit the fabric, the rotating speed of the weft-knitting single-face circular machine is 35 r / min, the weft-knitting double-face plain weave is used to knit the fabric, the spandex is knitted by using the weaving method of module, and a knitting structure schematic view is shown in Figure 1 ; S3, oil removal and drying of the fabric: the oil removal agent is HUMECTOL LYS of Angfa Chemical (China) Co., Ltd., the dosage is 3.0 g / L, the water, the oil removal temperature is 90℃, the oil removal machine speed is 30 m / min, the fabric is fed into the setting machine needle chain after the oil removal machine, and then is fed into the setting machine oven for drying, the setting machine speed is 30 m / min, the drying temperature is 132℃, and the drying time is 28 s; S4, pre-setting of the fabric: the setting machine is used to pre-set the fabric obtained in step S3, the setting temperature is 200℃, and the time is 20 s; S5, sanding: the fabric surface and the fabric bottom of the fabric obtained in step S4 are respectively sanded by using a sanding machine, the sanding roller rotating speed is 1450 r / min, the tension is 25 N, the sanding paper is 600 mesh, and the fabric passing speed is 21 m / min; S6, dyeing of the fabric: C.I. Basic Yellow 130.001%, C.I. Basic Red 220.001%, C.I. Basic Blue 420.01% of Zhejiang Runtu Chemical Group Co., Ltd., C.I. Disperse Yellow 114 0.02%, C.I. Disperse Red 167 0.04%, and C.I. Disperse Blue 751.0% of Zhejiang Longsheng Group Co., Ltd. are used to dye the fabric, the dyeing condition is 135℃, the time is 38 min, then the fabric is subjected to post-dyeing treatment, the dispersing agent is added for multiple washing, the over-acid is used to adjust the fabric body pH, and the fabric is discharged after drainage; S7, opening and drying: the rope-shaped fabric is subjected to water pressing and opening by using a water pressing machine, and then is fed into the setting machine for drying, the drying condition is 130℃, and the drying time is 15 s; S8, napping and raising, the fabric surface obtained in step S7 is lightly napped by using a double-sided napping machine, the napping roller speed is 1650 r / min, the tension is 15 N, the napping sandpaper is 600 mesh, and the fabric passing speed is 21 m / min, so as to enhance the cotton feeling and softness of the fabric; the fabric bottom is lightly raised by using a 36-roller high-speed raising machine, the light raising is that the raising big drum speed is 105 r / min, the reverse needle is 3% (equivalent to the linear speed of the needle tip rotating faster than the fabric linear speed by 3%), the tension is 2 KG, and the fabric passing speed is 21 m / min, so that the fabric bottom raising degree reaches an ideal effect, and the damage of raising to the spandex is reduced as much as possible; S9, post-finishing of the whole fabric, the finishing liquid formula is 12 g / L of hot-reactive polyurethane resin (purchased from Anguo Chemical (China) Co., Ltd., model Hydroperm RPU liquid), 12 g / L of amino-functional silicone (Zhongshan Baoao Ge Trading Co., Ltd., model SOFTENER L606), 0.4 g / L of DL-hydroxy succinic acid (Fujian Jining Xinde Mei Chemical Co., Ltd.), and water, the post-finishing temperature is 110°C, and the time is 9 s.
[0029] Comparative Example 1 A preparation process of a single-sided ash-colored yoga fabric, which is different from Example 1 in that the composite low-elasticity filament yarn length in step S2 is 25 cm / 100 needles, the spandex yarn length is 8 cm / 100 needles, the fabric is knitted by using a 32-needle 34-inch German Mayer & Cie. single-sided circular knitting machine, and the other steps are the same as those in Example 1.
[0030] Comparative Example 2 A preparation process of a single-sided ash-colored yoga fabric, which is different from Example 1 in that the composite low-elasticity filament yarn length in step S2 is 34 cm / 100 needles, the spandex yarn length is 10.5 cm / 100 needles, the fabric is knitted by using a 32-needle 34-inch German Mayer & Cie. single-sided circular knitting machine, and the other steps are the same as those in Example 1.
[0031] Comparative Example 3 A preparation process of a single-sided ash-colored yoga fabric, which is different from Example 1 in that step S5 is omitted, that is, the fabric surface and the fabric bottom of the fabric after setting are not subjected to the re-napping process, and the other steps are the same as those in Example 1.
[0032] Comparative Example 4 A preparation process of a single-sided ash-colored yoga fabric, which is different from Example 1 in that only the fabric surface is napped in step S5, and the napping parameters and the other steps are the same as those in Example 1.
[0033] Performance detection The single-face yoga fabrics obtained in the above examples and comparative examples were tested for tensile properties, breathability, softness, fluffiness, anti-pilling properties, anti-snagging properties, and anti-transmission properties. The test results are shown in Tables 1 and 2.
[0034] The elongation is determined by method A in BS EN ISO 14704-1:2005, which is the elongation under a force of 25 N. The residual elongation is determined by method A in BS EN ISO 14704-1:2005, which is the residual elongation after 1 minute of tensile test.
[0035] The air permeability is tested in accordance with the relevant provisions of JIS L1018 / 1096A.
[0036] The anti-pilling performance is tested in accordance with the relevant provisions of ISO12945-1:2000, and the pilling performance of the fabric sample is measured after it is rotated 11,000 times in the testing equipment.
[0037] The snagging performance is tested in accordance with the relevant provisions of GB / T11047-1989.
[0038] The anti-see-through performance is tested in accordance with Method B of GB / T42698-2023 "Testing and Evaluation of Anti-see-through Performance of Textiles". A color difference level ≤ 3 indicates poor anti-see-through performance, levels 3-4 and 4 both have certain anti-see-through performance, and levels ≥4-5 indicate good anti-see-through performance.
[0039] Fluffy performance is tested by FAST-1 compression tester to measure the thickness of fabric and its compression performance, which is expressed as surface compressibility. The principle is to use 2gf / cm 2 (196Pa) and 100gf / cm 2 (9.81kPa) Under two different loads, the relaxed surface thickness and absolute surface thickness of the fabric are calculated, and the difference between the two thicknesses is used to calculate the compressibility of the fabric. The formula is as follows: ST = T2-T100, where ST is the surface thickness of the fabric and T2 is the fabric at 2gf / cm 2 Thickness under conditions (relaxed surface thickness), T100 is the thickness of the fabric at 100gf / cm 2 Thickness under conditions (absolute surface thickness).
[0040] The softness is tested by a FAST-2 bending tester, and is expressed by bending stiffness. The FAST-2 bending tester is an instrument for testing the bending stiffness of a fabric according to the British Standard BS.3356-1961 using a cantilever beam method. The bending stiffness of the fabric is calculated by the bending length and the weight per unit area of the fabric. The bending stiffness, in combination with the elongation measured by a FAST-3, can be used to calculate the drapability, which is related to the sewing performance of the fabric. The drapability is not only related to the appearance such as drape and hand feeling, but also has a great influence on the garment making. The main index of the drapability is the bending stiffness, and the formula is as follows: B = W x C x 9.807 x 10 3 ﹣6 , wherein B is the bending stiffness (μN.m), W is the weight per unit area of the fabric (g / m 2 ), and C is the bending length (mm).
[0041] Table 1: Test results of the tensile properties of the single-sided yoga fabric Note: The residual elongation is also referred to as the permanent deformation rate. The higher the residual elongation, the poorer the elastic recovery of the fabric, and the less ideal the elastic performance. The higher the modulus, the harder the hand feeling of the fabric.
[0042] Table 2: Test results of other properties of the single-sided yoga fabric Note: The smaller the bending stiffness, the softer the fabric, and the greater the surface compressibility, indicating that the fabric has better loft performance.
[0043] In combination with Table 1 and Table 2, the yoga fabric obtained in Examples 1-3 has good tensile properties and recovery performance, and also has good softness and loft effect, and has excellent penetration resistance, good wearability and comfort.
[0044] Compared with Example 1, when the yarn length of the composite low-elasticity filament and spandex is lower than the limit of the present application, the elastic elongation of the yoga fabric obtained in Comparative Example 1 is reduced, the fabric is relatively compact, the air permeability is reduced, the hand feeling of the fabric is hard and rigid, and the loft cotton feeling is not good, and the wearability and applicability are not good.
[0045] Compared with Example 1, when the yarn length of the composite low-elasticity filament and spandex is higher than the limit of the present application, the air permeability, softness, loft cotton feeling, elastic elongation and air permeability of the fabric obtained in Comparative Example 2 are all better than those in Example 1, but when used as a yoga pants fabric, the hip and knee are obviously transparent, the anti-pilling and anti-snagging properties are reduced, and the wearability and applicability are slightly poor.
[0046] Compared with Example 1, when the heavy sanding process on the fabric surface and the fabric bottom is omitted in Comparative Example 3, the surface compressibility of the finished fabric is reduced, the fluffy cotton feeling is lacking, the fabric surface anti-pilling performance and anti-snagging performance are also reduced, and the spandex damage is great, so the residual elongation is significantly higher than that of Example 1, indicating that the elasticity of the fabric decays more seriously, and the modulus of the fabric of Comparative Example 3 is significantly higher than that of Example 1, indicating that the finished fabric feels stiff, and the color difference after sanding the fabric surface is large, which cannot meet the requirements of yoga sports fabric.
[0047] Compared with Example 1, when only the fabric surface is sanded in step S5 in Comparative Example 4, the modulus of the finished fabric is increased, the surface compressibility is reduced, and the residual elongation is increased, indicating that the finished fabric feels stiff, the fluffy cotton feeling is lacking, and the elasticity of the fabric decays obviously, indicating that the spandex damage is greater, which affects the wearing effect of the fabric.
[0048] The examples of the specific embodiments are the preferred embodiments of the present application, but do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.
Claims
1. A preparation process for gray single-sided yoga fabric, characterized in that: The method comprises the following preparation steps: S1. Yarn preparation: The fabric consists of 81-83% polyester and 17-19% spandex by weight. The polyester uses Shenghong Group's 100D / 144F composite low-stretch yarn, and the spandex uses South Korea's Hyosung's 70D spandex. The 100D / 144F composite low-stretch yarn is made by compounding 50D / 72F round-bright cationic polyester low-stretch yarn and ordinary 50D / 72F semi-bright polyester yarn; S2. Woven grey fabric: The composite low-elastic yarn is 28-32cm / 100 needles long, and the spandex yarn is 9-10cm / 100 needles long. The grey fabric is woven using a 32-needle, 34-inch German Meyer weft-knitted single-sided circular knitting machine. The fabric is woven using a weft-knitted double-sided plain weave. The spandex is woven using a die-cut weave method. S3, degreasing and drying the grey cloth; S4, pre-ordering of grey cloth; S5, sanding: the surface and bottom of the grey fabric are sanded again; S6, greige cloth dyeing; S7, loosen the cloth and dry; S8, sanding and fleecing, lightly sanding the fabric surface and lightly fleecing the fabric bottom; S9, the fabric is finally shaped as a whole.
2. The process for preparing a gray single-sided yoga fabric according to claim 1, characterized in that: The heavy sanding in step S5 is as follows: the sanding roller speed is 1350-1450 r / min, the tension is 25 N, the sanding sandpaper is 600 mesh, and the fabric passing speed is 19-21 m / min.
3. The process for preparing a gray single-sided yoga fabric according to claim 1, characterized in that: The light sanding in step S8 is as follows: the sanding roller speed is 1550-1650r / min, the tension is 15N, the sanding sandpaper is 600 mesh, and the fabric passing speed is 19-21m / min; the light grabbing is as follows: the grabbing drum speed is 95-105r / min, counterclockwise 3%, the tension is 2KG, and the fabric passing speed is 19-21m / min.
4. The process for preparing a gray single-sided yoga fabric according to claim 1, characterized in that: In step S3, the degreasing temperature is 70-90° C., the drying temperature is 128-132° C., and the drying time is 20-28 seconds.
5. The process for preparing a gray single-sided yoga fabric according to claim 1, characterized in that: In step S4, the predetermined temperature of the grey cloth is 195-200° C., and the time is 18-22 seconds.
6. The process for preparing a gray single-sided yoga fabric according to claim 1, characterized in that: The dyeing condition in step S6 is 125-135° C. and the dyeing time is 38-42 minutes.
7. The process for preparing a gray single-sided yoga fabric according to claim 1, characterized in that: The dyes used in step S6 include CIBasic Yellow 13, CIBasic Red 22, CIBasic Blue 42, CIDisperse Yellow 114, CIDisperse Red 167, and CIDisperse Blue 75.
8. The process for preparing a gray single-sided yoga fabric according to claim 1, characterized in that: The post-finishing formula includes 8-12 g / L of thermally reactive polyurethane, 8-12 g / L of amino-functional silicone, and 0.2-0.4 g / L of DL-hydroxysuccinic acid.
9. The process for preparing a gray single-sided yoga fabric according to claim 1, characterized in that: The post-finishing condition is 100-110° C. and the time is 9-12 seconds.
10. The process for preparing a gray single-sided yoga fabric according to claim 1, characterized in that: The rotation speed of the weft knitting single-sided circular knitting machine is 25-35r / min.