A biodegradable weft knitted fabric with a double-layer effect and a production method thereof

Abstract

The application discloses a double-layer effect biodegradable weft-knitted fabric and a production method thereof. The double-layer effect biodegradable weft-knitted fabric is interwoven by 40S cotton and biodegradable polyester fiber blended yarn and 75D / 72F fine denier light network structure regenerated polyester DTY filament. The yarn weight ratio of the 40S cotton and biodegradable polyester fiber blended yarn and the 75D / 72F fine denier light network structure regenerated polyester DTY filament interwoven fabric is 66%:34%. The double-layer effect biodegradable weft-knitted fabric comprises a front surface and a back surface. The front surface is provided with a front surface loop fabric layer with longitudinal concave-convex stripes and is knitted by the 75D / 72F fine denier light network structure regenerated polyester DTY filament. The back surface is provided with a front surface loop fabric layer with invisible longitudinal stripes and is knitted by the 40S cotton and biodegradable polyester fiber blended yarn. The fabric has double-face double-layer different appearance effects, biodegradable characteristics, moisture absorption and quick drying, soft touch, anti-pilling and good dimensional stability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of knitted fabrics, in particular to a double-layer effect biodegradable weft-knitted fabric and a production method thereof. BACKGROUND

[0002] Spring and summer POLO shirts, T-shirts and other knitted garments not only need to have good wearing comfort performance such as soft touch, moisture absorption and sweat wicking, but also need to use biodegradable fiber materials and recycled fiber materials, and be green and eco-friendly in the production and processing process, which is one of the demands and development trends of the current era. The existing POLO shirts, T-shirts and other knitted fabric materials generally use all-cotton, or polyester-cotton blended, or polyester fiber materials with good moisture absorption and sweat wicking function. The all-cotton fabric has the characteristics of softness, moisture absorption and air permeability, but when the human body sweats, it cannot quickly discharge sweat to the outer layer of the fabric, and the fabric will stick to the skin and give people an uncomfortable feeling. The polyester-cotton blended fabric has the softness, moisture absorption and air permeability of cotton, and the crispness and easy drying characteristics of polyester, but still does not have good moisture absorption and sweat wicking function. The polyester material has good moisture absorption and sweat wicking function and excellent moisture transfer and quick drying function, but the conventional material is derived from petroleum and is not biodegradable, and does not belong to green and eco-friendly textiles.

[0003] In view of the above, the present application is developed and designed by the inventor after deep thinking and active research and improvement of the above-mentioned fabric and its production method. SUMMARY

[0004] The present application aims to provide a double-layer effect biodegradable weft-knitted fabric and a production method thereof. The fabric not only has special double-sided double-layer different appearance color effect and biodegradable properties, but also has moisture transfer and quick drying, moisture absorption and sweat wicking, soft and breathable functions. The production method optimally uses biodegradable polyester and cotton special yarn and recycled polyester through double-sided interweaving design and special finishing process, and the preparation process is simple.

[0005] In order to achieve the above-mentioned purpose, the solution of the present application is as follows:

[0006] A double-layer effect biodegradable weft-knitted fabric is formed by interweaving 40S cotton and biodegradable polyester fiber blended yarn and 75D / 72F fine denier light network structure recycled polyester DTY filament, and the yarn weight ratio of the 40S cotton and biodegradable polyester fiber blended yarn and the 75D / 72F fine denier light network structure recycled polyester DTY filament is 66%:34%.

[0007] The double-layer effect biodegradable weft-knitted fabric comprises a fabric body with a front surface and a back surface, the front surface of the fabric body is provided with a front loop fabric layer with longitudinal concave-convex stripes, and the back surface of the fabric body is provided with a front loop fabric layer with invisible longitudinal stripes; the front loop fabric layer with longitudinal concave-convex stripes is knitted by 75D / 72F fine denier light network structure regenerated polyester DTY filaments, and the front loop fabric layer with invisible longitudinal stripes is knitted by 40S cotton and biodegradable polyester fiber blended yarn.

[0008] The front loop fabric layer with longitudinal concave-convex stripes is formed by alternately arranging highlighted stripes and recessed stripes, the highlighted stripe has three continuously arranged front loop wales, and the recessed stripe has one front loop wale, and the front loop wale of the recessed stripe is alternately arranged with two courses of looped stitches with a flat appearance effect and two courses of tuck stitches with a dot-shaped pinhole appearance effect.

[0009] The front loop fabric layer with invisible longitudinal stripes is formed by alternately arranging three continuously arranged rib-type needle arrangements of single-surface knitted weft plain stitch double-layer front loop wales and one single-surface knitted weft plain stitch double-layer front loop wale.

[0010] The fabric body is a rib-type composite structure, and the needle arrangement of the rib-type composite structure is alternately arranged with single-needle single-column tuck stitches and single-surface looped stitches.

[0011] The blending ratio of the 40S cotton and biodegradable polyester fiber blended yarn is 60%:40%.

[0012] The square meter weight of the double-layer effect biodegradable weft-knitted fabric is 230-240g / m 2 .

[0013] A production method of a double-layer effect biodegradable weft-knitted fabric, comprising a knitted weaving process and a finishing process, wherein the knitting method of the knitted weaving process is as follows:

[0014] A double-layer effect biodegradable weft-knitted fabric is knitted by a double-surface circular weft machine with rib-type needle arrangement of 2 needle tracks of needle cylinder needles and 1 needle track of needle disc needles; wherein the minimum cycle of one complete structure of the double-layer effect biodegradable weft-knitted fabric is 4 wales x 8 courses, wherein 4 wales are arranged by 2 needle tracks of 4 needle cylinder needles and 1 needle track of 4 needle disc needles, and 8 courses are arranged by 8 looped stitch system numbers around the needle cylinder, wherein,

[0015] The arrangement mode of 4 needle cylinder needles of one complete structure is ABBB, and the arrangement mode of 4 needle disc needles is AAAAA, wherein A represents a high butt needle, and B represents a low butt needle;

[0016] The yarn threading mode of the complete 8-circuit loop system is: the first, third, fifth and seventh circuits are threaded with 75D / 72F fine denier light network structure regenerated polyester DTY filaments, and the second, fourth and eighth circuits are threaded with 40S cotton and biodegradable polyester fiber blended yarns;

[0017] The triangular configuration mode of the complete 8-circuit loop system is: the first and third needle cylinders are set to tuck with needle cylinder needle A and not working with needle cylinder needle B, and the needle plate needle A is set to loop; the fifth and seventh needle cylinders are set to not working with needle cylinder needles A and B, and the needle plate needle A is set to loop; the second, fourth and eighth needle cylinders are set to loop with needle cylinder needles A and B, and the needle plate needle A is set to not working;

[0018] Table 1 is a triangular and yarn threading configuration table of the complete 8-circuit loop system

[0019]

[0020] Among them, the yarn threading configuration corresponds to: 1 represents 75D / 72F fine denier light network structure regenerated polyester DTY filaments, and 2 represents 40S cotton and biodegradable polyester fiber blended yarns;

[0021] Explanation of triangular configuration symbols: indicates that the needle plate needle loops, "Δ" indicates that the needle cylinder needle loops, "∩" indicates that the needle cylinder needle tucks, and "—" indicates that the needle plate needle or the needle cylinder needle does not work;

[0022] Among them, the average length of 75D / 72F fine denier light network structure regenerated polyester DTY filaments in every 100 loops in the double-layer effect biodegradable weft-knitted fabric is 23.8 cm when interlaced with double tuck and loop, and the average length is 21.4 cm when knitted with single loop; the average length of 40S cotton and biodegradable polyester fiber blended yarns in every 100 loops in the double-layer effect biodegradable weft-knitted fabric is 24.8 cm.

[0023] The finishing process includes: cloth sorting → end sewing → oxygen bleaching → first acid washing → first cold washing → pre-setting → polyester dyeing → reduction washing → second acid washing → second cold washing → cotton dyeing → third cold washing → third acid washing → soaping → hot washing → fourth cold washing → color fixing → dehydration → setting and drying → finished product setting → rolling → finished product inspection and testing; wherein,

[0024] Oxygen bleaching process: according to the bath ratio of 1:10, inject cold water into the cylinder of the L-type high-temperature and high-pressure double-liquid flow dyeing machine, start the main pump, and put the fabric into the circulation operation; start the "additive oxygen bleaching process program", and inject JFC penetrant diluted solution of 1.0-1.02% of the fabric weight and JET bath softener diluted solution of 1.0-1.02% of the fabric weight into the dyeing machine from the additional cylinder of the dyeing machine in sequence; after 5 minutes of circulation, inject caustic soda diluted solution of 1.0-1.02% of the fabric weight and hydrogen peroxide diluted solution of 4.0-4.1% of the fabric weight into the dyeing machine from the additional cylinder of the dyeing machine in sequence; after 3 minutes of circulation, increase the temperature of the solution and fabric in the dyeing machine from room temperature to 100°C at a rate of 2.0°C / min and keep it for 30 minutes; then decrease the temperature to 80°C at a rate of 3.0°C / min, overflow washing to 60°C and discharge;

[0025] First acid pickling process: according to the bath ratio of 1:10, inject cold water into the cylinder of the L-type high-temperature and high-pressure double-liquid flow dyeing machine, start the main pump and the acid pickling program, and make the water solution and fabric in the cylinder increase the temperature from room temperature to 60°C at a rate of 4.0°C / min and keep it for circulation; then inject ice acetic acid diluted solution of 0.3-0.31% of the fabric weight into the dyeing machine from the additional cylinder; after 15 minutes of 60°C heat preservation circulation, discharge;

[0026] First cold washing process: according to the bath ratio of 1:10, inject cold water into the cylinder of the L-type high-temperature and high-pressure double-liquid flow dyeing machine, start the main pump and the cold washing program, and circulate cold washing at room temperature for 10 minutes and then discharge; then repeat the first cold washing process once;

[0027] Pre-setting process: use the Taiwan Ligen tenter setting machine for pre-setting, add dip water, control the pick-up rate of 85-90%, and the setting temperature of the first to tenth sections of the oven is 160°C, 170°C, 180°C, 180°C, 180°C, 180°C, 180°C, 180°C, 180°C, and 170°C respectively; the fan speed of the oven is set to 1600 rpm, the vehicle speed is controlled at 24-25 m / min, and the falling temperature is controlled below 50°C;

[0028] Polyester dyeing process: according to the bath ratio 1:10, cold water is injected into the cylinder of the L-type high-temperature and high-pressure double-liquid flow dyeing machine of Chao Yaji, the main pump is started, and the fabric is circulated; from the additional cylinder of the dyeing machine, 0.3-0.31% of the acetic acid diluted solution and 0.6-0.61% of the high-temperature leveling agent diluted solution are sequentially injected into the cylinder of the dyeing machine, accounting for 0.39-0.393% of the weight of the fabric; after circulating for 3 minutes, the pH value of the dyeing solution in the cylinder is tested, and the pH value of the dyeing solution in the cylinder is controlled between 3.5-4.2; the dyeing program is started, the temperature is raised from room temperature to 70°C at a rate of 3.0°C / min, and the temperature is kept for 5 minutes; the temperature is raised to 110°C at a rate of 1.5°C / min, and the temperature is kept for 5 minutes; then the temperature is raised to 130°C at a rate of 1.5°C / min, and the temperature is kept for 30 minutes; then the temperature is lowered to 110°C at a rate of 2.5°C / min; then the temperature is lowered to 80°C at a rate of 3.0°C / min, and the color is sampled; after the color is confirmed, the liquid is discharged;

[0029] Reduction washing process: according to the bath ratio 1:10, cold water is injected into the cylinder of the L-type high-temperature and high-pressure double-liquid flow dyeing machine of Chao Yaji, the main pump and the reduction cleaning program are started, and the temperature is raised from room temperature to 60°C at a rate of 4.0-4.5°C / min, and the temperature is kept for 5 minutes; 0.8-0.81% of the piece alkali diluted solution is injected, and the temperature is kept for 3 minutes after circulating; the temperature is raised from 60°C to 70°C at a rate of 2.5°C / min, and the temperature is kept for 3 minutes after circulating; then 1.5-1.51% of the sodium hydrosulfite diluted solution is injected, and the temperature is kept for 20 minutes after circulating; then the temperature is raised from 70°C to 80°C at a rate of 2.5°C / min, and the temperature is kept for 20 minutes after overflowing to 60°C; according to the bath ratio 1:10, cold water is injected into the cylinder of the L-type high-temperature and high-pressure double-liquid flow dyeing machine of Chao Yaji, the main pump is started, and the temperature is kept for 5 minutes after circulating cold washing at room temperature; then the liquid is discharged;

[0030] Second pickling process: according to the bath ratio 1:10, cold water is injected into the cylinder of the L-type high-temperature and high-pressure double-liquid flow dyeing machine of Chao Yaji, the main pump and the acid washing program are started, and the temperature of the water solution and the fabric in the cylinder is raised from room temperature to 60°C at a rate of 4.0°C / min, and the temperature is kept for 5 minutes after circulating; then 0.3-0.31% of the ice acetic acid diluted solution is injected from the additional cylinder into the dyeing machine; the temperature is kept for 15 minutes after circulating at 60°C, and then the liquid is discharged;

[0031] Second cold washing process: according to the bath ratio 1:10, cold water is injected into the cylinder of the L-type high-temperature and high-pressure double-liquid flow dyeing machine of Chao Yaji, the main pump and the cold washing program are started, and the temperature is kept for 10 minutes after circulating cold washing at room temperature; then the liquid is discharged; then the second cold washing process is repeated once;

[0032] Cotton dyeing process: according to bath ratio 1:10, cold water is injected into the cylinder of Chao Yaji L type high temperature and high pressure double liquid dyeing machine, the main pump and the "active dye feeding dyeing" program are started, and the water solution and fabric in the cylinder are heated from room temperature to 40 DEG C; the solution of sodium sulphate dissolved in an amount of 60-60.6% of the weight of the fabric is quickly injected from the additional cylinder of the dyeing machine into the cylinder of the dyeing machine; after circulating for 10 minutes, the active dye solution fully dissolved in an amount of 2.52-2.523% of the weight of the fabric is injected in 20 minutes in the "linear feeding mode"; after circulating for 10 minutes, the pure alkali solution fully dissolved in an amount of 2-2.1% of the weight of the fabric is injected in 5 minutes from the additional cylinder of the dyeing machine into the cylinder of the dyeing machine in the "linear feeding mode"; after circulating for 10 minutes, the temperature is raised at a rate of 1 DEG C / min from 40 DEG C to 60 DEG C; after circulating for 10 minutes, the pure alkali solution fully dissolved in an amount of 18-18.1% of the weight of the fabric is injected in 20 minutes in the "linear feeding mode", and the sample is taken for color after continuing to circulate for 50 minutes; the color is qualified, and the overflow washing is carried out for 10 minutes, and then the liquid is discharged;

[0033] Third cold washing process: according to bath ratio 1:10, cold water is injected into the cylinder of Chao Yaji L type high temperature and high pressure double liquid dyeing machine, the main pump and the cold washing program are started, and the liquid is discharged after circulating for 10 minutes of cold washing;

[0034] Third acid washing process: according to bath ratio 1:10, cold water is injected into the cylinder of Chao Yaji L type high temperature and high pressure double liquid dyeing machine, the main pump and the acid washing program are started, and the water solution and fabric in the cylinder are heated from room temperature to 60 DEG C at a rate of 4.0 DEG C / min; then the ice acetic acid diluted solution in an amount of 0.3-0.31% of the weight of the fabric is injected from the additional cylinder into the dyeing machine; the liquid is discharged after circulating for 15 minutes at 60 DEG C;

[0035] Soaping process: according to bath ratio 1:10, cold water is injected into the cylinder of Chao Yaji L type high temperature and high pressure double liquid dyeing machine, the main pump and the soaping program are started, and the diluted soaping agent solution in an amount of 0.4-0.41% of the weight of the fabric is injected from the additional cylinder of the dyeing machine into the dyeing machine; after circulating for 3 minutes, the temperature is raised from room temperature to 85 DEG C at a rate of 3 DEG C / min, and the liquid is discharged after circulating for 20 minutes at 85 DEG C and then overflow washing at 60 DEG C;

[0036] Hot washing process: according to bath ratio 1:10, cold water is injected into the cylinder of Chao Yaji L type high temperature and high pressure double liquid dyeing machine, the main pump and the hot washing program are started, and the water solution and fabric in the dyeing machine are heated from room temperature to 60 DEG C at a rate of 4.0 DEG C / min; the liquid is discharged after circulating for 10 minutes;

[0037] Fourth cold washing process: according to bath ratio 1:10, cold water is injected into the cylinder of Chao Yaji L type high temperature and high pressure double liquid dyeing machine, the main pump and the cold washing program are started, and the liquid is discharged after circulating for 10 minutes of cold washing;

[0038] Fixing process: according to the bath ratio 1:10, cold water is injected into the cylinder of the L-shaped high-temperature and high-pressure double liquid dyeing machine, the main pump and the fixing program are started, the dilute fixing agent solution accounting for 2.0-2.04% of the weight of the fabric is injected into the dyeing machine from the additional cylinder of the dyeing machine, the temperature is raised from room temperature to 45 DEG C at a rate of 2.5 DEG C / min, and the liquid is discharged after 20 minutes of heat preservation;

[0039] Drying and setting: the semi-finished product after dehydration is dried and processed by using the 8-section drying oven of the door Fuji tenter; the first to the eighth section of the drying oven is not watered, and the temperature is set to 110 DEG C, 120 DEG C, 120 DEG C, 120 DEG C, 120 DEG C, 120 DEG C, 120 DEG C, 110 DEG C respectively, the fan speed of the drying oven is set to 1600 rpm, the vehicle speed is controlled to be 19-20 m / min, and the falling temperature is controlled to be below 50 DEG C;

[0040] Finished product setting process: the semi-finished product is processed by using the 8-section drying oven of the door Fuji tenter; the padding solution is prepared according to the corrected padding process formula; the weight of the prepared padding solution is calculated and the amount is controlled according to the total amount of the fabric with liquid after padding, the volume of the padding tank; the padding solution formula is: 15 g / L of moisture absorption and sweat finishing aid, 3 g / L of penetrant and 0.2 g / L of glacial acetic acid; 120 L of the prepared solution is added into the padding tank of the door Fuji tenter, and the padding rate is controlled to be 85-90%; the temperature of the first to the eighth section of the drying oven is set to 130 DEG C, 140 DEG C, 150 DEG C, 150 DEG C, 150 DEG C, 150 DEG C, 150 DEG C, 140 DEG C respectively, the fan speed of the drying oven is controlled to be 1600 rpm, the vehicle speed is controlled to be 19-20 m / min, and the falling temperature is controlled to be below 50 DEG C.

[0041] Compared with the prior art, the double-layer effect of the biodegradable weft-knitted fabric has the following advantages:

[0042] 1、The fabric of the present application has double-sided double-layer effect: the single-side weaving structure design of rib needle arrangement configuration and the structure design of one needle in every four needle cylinder needles alternately knitting and not working, alternately knitting and combining into the structure, wherein: the single-side weaving structure design makes the 40S cotton and biodegradable polyester fiber blended yarn completely on one side (the back side, the inner layer) of the fabric, with soft hand feeling and good moisture absorption characteristics; the 75D / 72F fine denier light network structure regenerated polyester DTY filament is completely on the other side (the front side, the outer layer) of the fabric, with certain luster and crispness; and the structure design of one needle in every four needle cylinder needles alternately knitting and not working, alternately knitting and combining into the structure makes the 40S cotton and biodegradable polyester fiber blended yarn side only have the appearance of invisible longitudinal stripes; the 75D / 72F fine denier light network structure regenerated polyester DTY filament side shows longitudinal concave-convex stripes in appearance, and alternately configures the flat appearance and the pinhole appearance effect at the concave stripe; so that the fabric of the present application has double-sided double-layer effect of different material properties and different appearance design patterns on two sides;

[0043] 2、The fabric of the present application has biodegradable characteristics: the blending ratio of the 40S cotton and biodegradable polyester fiber blended yarn used is 60%:40%, the biodegradable polyester fiber is 95% degradable for 180 days of discarded and buried clothes, and returns to the natural environment; the 75D / 72F fine denier light network structure regenerated polyester DTY filament also belongs to the circular renewable green fiber, the yarn weight ratio of the 40S cotton and biodegradable polyester fiber blended yarn and the 75D / 72F fine denier light network structure regenerated polyester DTY filament interwoven fabric is 66%:34%, the chemical fiber green fiber accounts for more than 50%, and the degradable performance is high.

[0044] 3、The fabric of the present application has moisture absorption and quick drying and good wearing comfort performance: the fabric of the present application obtains moisture absorption and quick drying function through moisture absorption and sweat releasing function finishing; the double-layer fabric organization structure of rib needle arrangement configuration gives the fabric good dimensional stability; the single-side weaving of the 40S cotton and biodegradable polyester fiber blended yarn of the close-fitting layer gives the fabric good touch and moisture absorption characteristics, and the combination of pinhole point structure design increases the air permeability of the fabric.

[0045] 4、The preparation process of the fabric of the present application is simple: the fabric can be knitted on the double-sided circular weft machine of the rib type needle arrangement configuration, the post-finishing process is short, and the preparation process is simple. BRIEF DESCRIPTION OF DRAWINGS

[0046] Figure 1 It is the front view schematic diagram of the fabric of the present application, which has concave-convex stripe and pinhole effect on the front side (the outer layer);

[0047] Figure 2Front view of the fabric of the present application with the appearance effect of longitudinal concave-convex stripes on the reverse side (inner layer).

[0048] Symbol explanation

[0049] Front side of the fabric 10; reverse side of the fabric 20; convex stripe 11; concave stripe 12; horizontal course loop 13; horizontal set loop 14. DETAILED DESCRIPTION

[0050] In order to further explain the technical scheme of the present application, the present application will be described in detail below through specific embodiments.

[0051] Reference Figure 1 and Figure 2 The present application discloses a double-layer effect biodegradable weft-knitted fabric, which is interwoven by 40S cotton and biodegradable polyester fiber blended yarn and 75D / 72F fine denier light network structure regenerated polyester DTY filament, and the yarn weight ratio of the 40S cotton and biodegradable polyester fiber blended yarn and the 75D / 72F fine denier light network structure regenerated polyester DTY filament is 66%:34%; the double-layer effect biodegradable weft-knitted fabric comprises a fabric body with a front side 10 and a reverse side 20, the front side 10 of the fabric body is provided with a front side loop fabric layer with longitudinal concave-convex stripes, and the reverse side 20 of the fabric body is provided with a front side loop fabric layer with invisible longitudinal stripes; the front side loop fabric layer with longitudinal concave-convex stripes is knitted by 75D / 72F fine denier light network structure regenerated polyester DTY filament, and the front side loop fabric layer with invisible longitudinal stripes is knitted by 40S cotton and biodegradable polyester fiber blended yarn; the fabric has double-face double-layer different appearance effects, biodegradable properties, and good size stability performance, and has the properties of moisture absorption, quick drying, soft touch, anti-pilling and the like.

[0052] The front side loop fabric layer with longitudinal concave-convex stripes of the present application is alternately configured by highlighted stripes 11 and concave stripes 12, the highlighted stripes 11 have three continuously arranged front side loop columns, and the concave stripes 12 have one front side loop column, and the front side loop column of the concave stripes is alternately configured with two horizontal course loops 13 with a flat appearance effect and two horizontal set loops 14 with a dot-shaped pinhole appearance effect.

[0053] The front side loop fabric layer with invisible longitudinal stripes of the present application is alternately configured by three continuously arranged rib-type needle arrangements of double-layer front side loop columns of single-weft plain stitch and one double-layer front side loop column of single-weft plain stitch.

[0054] The fabric body of the present application is a rib-type composite organization, and the needle arrangement of the rib-type composite organization is alternately configured by single-needle single-column set loop and single-side course knitting.

[0055] The blending ratio of the 40S cotton blended with the biodegradable polyester fiber yarn of the present application is 60%:40%.

[0056] The square meter weight of the biodegradable weft-knitted fabric with double-layer effect of the present application is 230-240g / m 2 .

[0057] The present application also discloses a production method of the biodegradable weft-knitted fabric with double-layer effect, comprising a knitting weaving process and a post-finishing process, wherein the knitting method of the knitting weaving process is:

[0058] The weft-knitted fabric with double-layer effect is knitted on a double circular weft-knitting machine with a cylinder diameter of 34 inches, a gauge of 32 stitches / inch, and a total number of needles of 3408, using a rib-type needle arrangement of 2 needle tracks of cylinder needles and 1 needle track of dial needles; wherein the minimum cycle of one complete stitch of the biodegradable weft-knitted fabric with double-layer effect is 4 wales x 8 courses, wherein: 4 wales are arranged by 2 needle tracks of 4 cylinder needles and 1 needle track of 4 dial needles, and 8 courses are arranged by 8 loop system numbers around the cylinder, wherein,

[0059] The arrangement of 4 cylinder needles of one complete stitch is ABBB, and the arrangement of 4 dial needles is AAAAA, wherein A represents a high butt needle, and B represents a low butt needle;

[0060] The threading mode of 8 loop systems of one complete stitch is: the 1st, 3rd, 5th, and 7th loop systems are threaded with 75D / 72F fine denier light network structure regenerated polyester DTY filaments, and the 2nd, 4th, 6th, and 8th loop systems are threaded with 40S cotton blended with biodegradable polyester fiber yarn;

[0061] The cam arrangement mode of 8 loop systems of one complete stitch is: the 1st and 3rd cylinder needles A correspond to tuck stitches, the 1st and 3rd cylinder needles B correspond to non-working, and the 1st and 3rd dial needles A correspond to loop stitches; the 5th and 7th cylinder needles A and B correspond to non-working, and the 5th and 7th dial needles A correspond to loop stitches; the 2nd, 4th, 6th, and 8th cylinder needles A and B correspond to loop stitches, and the 2nd, 4th, 6th, and 8th dial needles A correspond to non-working;

[0062] Table 1 is a cam and threading arrangement table of one complete stitch

[0063]

[0064]

[0065] wherein: the threading arrangement corresponds to: 1 represents 75D / 72F fine denier light network structure regenerated polyester DTY filament, and 2 represents 40S cotton blended with biodegradable polyester fiber yarn;

[0066] Cam arrangement symbol explanation: " " indicates that the needle cylinder needle is formed into a loop, and " " indicates that the needle cylinder needle is formed into a loop.

[0067] In the double-layer effect biodegradable weft-knitted fabric, the average length of 75D / 72F fine denier light network structure regenerated polyester DTY filaments in every 100 loops is 23.8 cm when the double-layer effect biodegradable weft-knitted fabric is interwoven with double-side tuck and loop, and the average length of the 75D / 72F fine denier light network structure regenerated polyester DTY filaments in every 100 loops is 21.4 cm when the double-layer effect biodegradable weft-knitted fabric is knitted with single-side loop; and the average length of 40S cotton and biodegradable polyester fiber blended yarns in every 100 loops in the double-layer effect biodegradable weft-knitted fabric is 24.8 cm.

[0068] The raw fabric of the fabric has a horizontal density of 82 courses per 5 cm and a vertical density of 103 wales per 5 cm, and a square meter weight of 158 g / m 2 , and a width of 224 cm after being taken out of the machine.

[0069] The post-finishing process of the fabric comprises the following steps: fabric arranging, end sewing, oxygen bleaching, first acid washing, first cold washing, pre-setting, polyester dyeing, reduction washing, second acid washing, second cold washing, cotton dyeing, third cold washing, third acid washing, soaping, hot washing, fourth cold washing, color fixing, dehydration, setting and drying, finished product setting, rolling, and finished product inspection.

[0070] The oxygen bleaching process is as follows: cold water is injected into the cylinder of a L-type high-temperature and high-pressure double-liquid dyeing machine of Chao Yaji according to a bath ratio of 1:10, the main pump is started, and the fabric is put in for circulation; the "dosing oxygen bleaching process program" is started, JFC penetrant dilute solution accounting for 1.0-1.02% of the weight of the fabric and JET bath softener dilute solution accounting for 1.0-1.02% of the weight of the fabric are sequentially injected into the dyeing machine from the additional cylinder of the dyeing machine in "linear dosing mode"; after 5 minutes of circulation, flake alkali dilute solution accounting for 1.0-1.02% of the weight of the fabric and hydrogen peroxide dilute solution accounting for 4.0-4.1% of the weight of the fabric are sequentially injected into the dyeing machine from the additional cylinder of the dyeing machine in "linear dosing mode"; after 3 minutes of circulation, the solution and the fabric in the dyeing machine are heated from room temperature to 100 DEG C at a heating rate of 2.0 DEG C / min and are kept at 100 DEG C for 30 minutes; then the temperature is decreased to 80 DEG C at a rate of 3.0 DEG C / min, and overflow washing is performed to 60 DEG C for liquid discharge;

[0071] The first acid washing process is as follows: cold water is injected into the cylinder of a L-type high-temperature and high-pressure double-liquid dyeing machine of Chao Yaji according to a bath ratio of 1:10, the main pump and the acid washing program are started, and the water solution and the fabric in the cylinder are heated from room temperature to 60 DEG C at a heating rate of 4.0 DEG C / min for heat preservation and circulation; then ice acetic acid dilute solution accounting for 0.3-0.31% of the weight of the fabric is injected into the dyeing machine from the additional cylinder; after 15 minutes of heat preservation and circulation at 60 DEG C, the liquid is discharged;

[0072] First cold washing process: according to bath ratio 1:10, cold water is injected into the cylinder of the L-shaped high-temperature and high-pressure double-liquid flow dyeing machine of Chao Asia, the main pump and the cold washing program are started, and the liquid is discharged after circulating cold washing at room temperature for 10 minutes; the first cold washing process is repeated once again;

[0073] Preforming process: preforming is carried out by using Taiwan Li Gen tenter, water is added by padding, the pick-up is controlled to be 85-90%, the setting temperatures of the first to tenth ovens are 160℃, 170℃, 180℃, 180℃, 180℃, 180℃, 180℃, 180℃, 180℃ and 170℃ respectively, the fan speed of the oven is set to 1600 rpm, the speed of the machine is controlled to be 24-25 m / min, and the falling temperature is controlled to be below 50℃;

[0074] Polyester dyeing process: according to bath ratio 1:10, cold water is injected into the cylinder of the L-shaped high-temperature and high-pressure double-liquid flow dyeing machine of Chao Asia, the main pump is started, and the fabric is circulated; 0.3-0.31% of acetic acid diluted solution and 0.6-0.61% of high-temperature leveling agent diluted solution are injected into the cylinder of the dyeing machine from the additional cylinder, respectively; after circulating for 3 minutes, 0.39-0.393% of fully dissolved disperse dye solution is injected into the dyeing cylinder; after circulating for 3 minutes, the pH value of the dyeing solution in the cylinder is tested, and the pH value of the dyeing solution in the cylinder is controlled to be 3.5-4.2; the dyeing program is started, the temperature is raised from room temperature to 70℃ at a rate of 3.0℃ / min, and the temperature is kept for 5 minutes; the temperature is raised to 110℃ at a rate of 1.5℃ / min, and the temperature is kept for 5 minutes; then the temperature is raised to 130℃ at a rate of 1.5℃ / min, and the temperature is kept for 30 minutes; then the temperature is lowered to 110℃ at a rate of 2.5℃ / min; then the temperature is lowered to 80℃ at a rate of 3.0℃ / min, and the color is tested; after the color is confirmed, the liquid is discharged;

[0075] Reduction washing process: according to bath ratio 1:10, cold water is injected into the cylinder of the L-shaped high-temperature and high-pressure double-liquid flow dyeing machine of Chao Asia, the main pump and the reduction washing program are started, the temperature is raised from room temperature to 60℃ at a rate of 4.0-4.5℃ / min, and the temperature is kept for circulating operation; 0.8-0.81% of flake alkali diluted solution is injected, and the temperature is kept for circulating operation for 3 minutes after the temperature is raised to 70℃ at a rate of 2.5℃ / min; 1.5-1.51% of sodium hydrosulfite diluted solution is injected, and the temperature is kept for circulating operation for 3 minutes after the temperature is raised to 80℃ at a rate of 2.5℃ / min; then the temperature is raised to 60℃ at a rate of 2.5℃ / min, and the liquid is discharged after overflow washing; according to bath ratio 1:10, cold water is injected into the cylinder of the L-shaped high-temperature and high-pressure double-liquid flow dyeing machine of Chao Asia, the main pump is started, and the liquid is discharged after circulating cold washing at room temperature for 5 minutes;

[0076] Second acid washing process: according to bath ratio 1:10, cold water was injected into the cylinder of the L-shaped high-temperature and high-pressure double-liquid-flow dyeing machine of Chao Yaji, the main pump and the acid washing program were started, and the water solution and the fabric in the cylinder were heated from room temperature to 60°C at a heating rate of 4.0°C / min for temperature holding circulation; then, 0.3-0.31% of dilute glacial acetic acid solution based on the weight of the fabric was injected from the additional cylinder into the dyeing machine; after 15 minutes of 60°C temperature holding circulation, the liquid was discharged;

[0077] Second cold washing process: according to bath ratio 1:10, cold water was injected into the cylinder of the L-shaped high-temperature and high-pressure double-liquid-flow dyeing machine of Chao Yaji, the main pump and the cold washing program were started, and the liquid was discharged after 10 minutes of room temperature circulation cold washing; then, the second cold washing process was repeated once;

[0078] Cotton dyeing process: according to bath ratio 1:10, cold water was injected into the cylinder of the L-shaped high-temperature and high-pressure double-liquid-flow dyeing machine of Chao Yaji, the main pump and the "active dye feeding dyeing" program were started, and the water solution and the fabric in the cylinder were heated from room temperature to 40°C; 60-60.6% of sodium sulfate solution after dissolution based on the weight of the fabric was quickly injected from the additional cylinder of the dyeing machine into the cylinder of the dyeing machine; after 10 minutes of circulation, 2.52-2.523% of fully dissolved active dye solution based on the weight of the fabric was injected into the cylinder of the dyeing machine in "linear feeding mode" within 20 minutes; after 10 minutes of circulation, 2-2.1% of fully dissolved soda ash solution based on the weight of the fabric was injected into the cylinder of the dyeing machine from the additional cylinder of the dyeing machine in "linear feeding mode" within 5 minutes; after 10 minutes of circulation, the temperature was raised from 40°C to 60°C at a heating rate of 1°C / min for temperature holding; after 10 minutes of circulation, 18-18.1% of fully dissolved soda ash solution based on the weight of the fabric was injected into the cylinder of the dyeing machine in "linear feeding mode" within 20 minutes, and the sample was taken for color matching after continuing temperature holding for 50 minutes; the color was qualified, and the liquid was discharged after 10 minutes of overflow washing;

[0079] Third cold washing process: according to bath ratio 1:10, cold water was injected into the cylinder of the L-shaped high-temperature and high-pressure double-liquid-flow dyeing machine of Chao Yaji, the main pump and the cold washing program were started, and the liquid was discharged after 10 minutes of circulation cold washing;

[0080] Third acid washing process: according to bath ratio 1:10, cold water was injected into the cylinder of the L-shaped high-temperature and high-pressure double-liquid-flow dyeing machine of Chao Yaji, the main pump and the acid washing program were started, and the water solution and the fabric in the cylinder were heated from room temperature to 60°C at a heating rate of 4.0°C / min for temperature holding circulation; then, 0.3-0.31% of dilute glacial acetic acid solution based on the weight of the fabric was injected from the additional cylinder into the dyeing machine; after 15 minutes of 60°C temperature holding circulation, the liquid was discharged;

[0081] Soaping process: according to bath ratio 1:10, cold water was injected into the cylinder of the L-type high-temperature and high-pressure double-liquid flow dyeing machine, the main pump and soaping program were started, and the diluted soaping agent solution accounting for 0.4-0.41% of the weight of the fabric was injected into the dyeing machine from the additional cylinder of the dyeing machine; after circulating for 3 minutes, the temperature was raised from room temperature to 85°C at a rate of 3°C / min, and the temperature was kept for 20 minutes, and the liquid was discharged after overflow washing when the water temperature was 60°C;

[0082] Hot washing process: according to bath ratio 1:10, cold water was injected into the cylinder of the L-type high-temperature and high-pressure double-liquid flow dyeing machine, the main pump and hot washing program were started, and the water solution and fabric in the dyeing machine were heated from room temperature to 60°C at a rate of 4.0°C / min, and the liquid was discharged after circulating for 10 minutes;

[0083] Fourth cold washing process: according to bath ratio 1:10, cold water was injected into the cylinder of the L-type high-temperature and high-pressure double-liquid flow dyeing machine, the main pump and cold washing program were started, and the liquid was discharged after circulating cold washing for 10 minutes;

[0084] Fixing process: according to bath ratio 1:10, cold water was injected into the cylinder of the L-type high-temperature and high-pressure double-liquid flow dyeing machine, the main pump and fixing program were started, and the diluted fixing agent solution accounting for 2.0-2.04% of the weight of the fabric was injected into the dyeing machine from the additional cylinder of the dyeing machine, and the temperature was raised from room temperature to 45°C at a rate of 2.5°C / min, and the liquid was discharged after keeping the temperature for 20 minutes;

[0085] Drying and setting: the semi-finished product after dewatering was dried and processed by using a Moritex stenter setting machine with 8 ovens; the fabric was not watered by the rolling car, and the temperatures of the first to eighth ovens were set to be 110°C, 120°C, 120°C, 120°C, 120°C, 120°C, 120°C, and 110°C respectively, the fan speed of the ovens was set to be 1600 rpm, the car speed was controlled to be 19-20 m / min, and the fabric temperature was controlled to be below 50°C;

[0086] Finished product setting process: the semi-finished product was processed by using a Moritex stenter setting machine with 8 ovens; the padding solution was prepared according to the corrected padding process formula; the weight of the prepared padding solution was calculated and controlled according to the total amount of liquid carried by the fabric after padding, and the volume of the padding tank; the padding solution formula was as follows: 15 g / L of moisture absorption and sweat releasing finishing aid, 3 g / L of penetrating agent, and 0.2 g / L of glacial acetic acid; 120 L of the prepared solution was added into the padding tank of the Moritex stenter setting machine, and the padding rate was controlled to be 85-90%; the temperatures of the first to eighth ovens were set to be 130°C, 140°C, 150°C, 150°C, 150°C, 150°C, 150°C, and 140°C respectively, the fan speed of the ovens was controlled to be 1600 rpm, the car speed was controlled to be 19-20 m / min, and the fabric temperature was controlled to be below 50°C.

[0087] The loom width of the present application is: the production control is carried out according to the required finished product width, and other processes are as conventional processes; the width of the prepared plain fabric is 190 cm, and the fabric square meter weight is 235 g / m 2 .

[0088] Compared with the prior art, the double-layer effect biodegradable weft-knitted fabric has the following advantages:

[0089] 1. The fabric has a double-layer effect: the single-knitting structure design of rib needle arrangement and the structure design of one needle in every four needle cylinder needles alternately knitting and not working are combined to form the structure design of alternately knitting and not working, wherein: the single-knitting structure design of rib needle arrangement makes the 40S cotton and biodegradable polyester fiber blended yarn completely on one side (the back side, the inner layer) of the fabric, has soft hand feeling and good moisture absorption characteristics; the 75D / 72F fine denier light network structure regenerated polyester DTY filament is completely on the other side (the front side, the outer layer) of the fabric, has a certain luster and a crisp feeling; and the structure design of one needle in every four needle cylinder needles alternately knitting and not working is combined to form the structure design of alternately knitting and not working, so that the 40S cotton and biodegradable polyester fiber blended yarn is only a flat appearance of invisible longitudinal stripes on one side; the 75D / 72F fine denier light network structure regenerated polyester DTY filament displays longitudinal concave and convex stripes on one side, and alternately configures a flat appearance and a pinhole appearance effect at the concave stripe; so that the fabric has a double-layer effect of different material properties and different appearance design patterns on two sides.

[0090] 2. The fabric has biodegradable characteristics: the blending ratio of the 40S cotton and biodegradable polyester fiber blended yarn is 60%:40%, the biodegradable polyester fiber is 95% degradable for 180 days of discarded and buried clothes, and returns to the natural environment; the 75D / 72F fine denier light network structure regenerated polyester DTY filament also belongs to a circular renewable green fiber, and the yarn weight ratio of the 40S cotton and biodegradable polyester fiber blended yarn and the 75D / 72F fine denier light network structure regenerated polyester DTY filament interwoven fabric is 66%:34%, the chemical fiber green fiber accounts for more than 50%, and the degradable performance is high.

[0091] 3. The fabric has moisture absorption and quick drying and good wearing comfort performance: the fabric has moisture absorption and quick drying function after moisture absorption and sweat releasing functional finishing; the double-layer fabric organization structure of rib needle arrangement gives the fabric good dimensional stability; the single-knitting of the 40S cotton and biodegradable polyester fiber blended yarn on the close-to-body layer gives the fabric good touch and moisture absorption characteristics, and the pinhole point structure design increases the air permeability of the fabric.

[0092] 4、The preparation process of the fabric is simple: the fabric can be knitted on a double circular weft machine with a rib type needle arrangement of upper two and lower two, the post-finishing process is short, and the fabric has the characteristics of simple preparation process.

[0093] The double-layer effect biodegradable weft-knitted fabric produced by the method is tested for moisture absorption and quick drying and other wearing properties according to a standard after standing for 48 hours under a standard state, and the corresponding standard and test results are shown in Table 2.

[0094] Table 2: Fabric performance test results

[0095]

[0096] The above examples and drawings are not limited to the product form and style of the present application, and any appropriate changes or modifications made by those skilled in the art shall be considered as not departing from the patent scope of the present application.

Claims

1. A biodegradable weft knitted fabric with a double-layer effect, characterized by: The biodegradable weft-knitted fabric with double-layer effect is interwoven by 40S cotton and biodegradable polyester fiber blended yarn and 75D / 72F fine denier light network structure regenerated polyester DTY filament, and the yarn weight ratio of the 40S cotton and biodegradable polyester fiber blended yarn and the 75D / 72F fine denier light network structure regenerated polyester DTY filament is 66%:34%; The biodegradable weft-knitted fabric with double-layer effect comprises a fabric body with a front surface and a back surface, the front surface of the fabric body is provided with a front surface loop fabric layer with longitudinal concave-convex stripes, and the back surface of the fabric body is provided with a front surface loop fabric layer with invisible longitudinal stripes; the front surface loop fabric layer with longitudinal concave-convex stripes is knitted by 75D / 72F fine denier light network structure regenerated polyester DTY filament, and the front surface loop fabric layer with invisible longitudinal stripes is knitted by 40S cotton and biodegradable polyester fiber blended yarn; the front surface loop fabric layer with longitudinal concave-convex stripes is formed by alternately arranging highlighted stripes and recessed stripes, the highlighted stripe has three continuously arranged front surface loop wales, and the recessed stripe has one front surface loop wale, and the front surface loop wale of the recessed stripe is alternately arranged with two horizontal rows of loop stitches with a flat appearance effect and two horizontal rows of tuck stitches with a dot-shaped pinhole appearance effect; the front surface loop fabric layer with invisible longitudinal stripes is formed by alternately arranging three continuously arranged rib-type needle arrangements of single-surface knitted weft plain stitch and one double-layer front surface loop wale of single-surface knitted weft plain stitch.

2. A biodegradable weft knitted fabric of dual effect according to claim 1, characterized in that: The fabric body is a rib-type composite structure, and the needle arrangement of the rib-type composite structure is alternately arranged by single-needle single-row tuck and single-surface loop knitting.

3. A biodegradable weft knitted fabric of dual effect according to claim 1, characterized in that: The blending ratio of the 40S cotton and biodegradable polyester fiber blended yarn is 60%:40%.

4. A biodegradable weft knitted fabric of dual effect according to claim 1, characterized in that: The biodegradable weft knitted fabric of double-layer effect has a square meter weight of 230-240 g / m 2 .

5. A method of producing a biodegradable weft knitted fabric with a double-layer effect, characterized by: The process comprises a knitting process and a post-finishing process, and the knitting method of the knitting process is as follows: The fabric is knitted by a double-surface circular weft-knitting machine with rib-type needle arrangement of two needle tracks of needle cylinder needles and one needle track of needle disc needles; wherein, the minimum cycle of one complete structure of the biodegradable weft-knitted fabric with double-layer effect is 4 wales x 8 rows, wherein, 4 wales are arranged by 2 needle tracks of 4 needle cylinder needles and one needle track of 4 needle disc needles, and 8 rows are arranged by 8 loop system numbers around the needle cylinder, wherein, The arrangement of 4 needle cylinder needles of one complete structure is ABBB, and the arrangement of 4 needle disc needles is AAAA, wherein, A represents a high butt needle, and B represents a low butt needle; The 8-loop system threading mode of one complete structure is as follows: the 1st, 3rd, 5th and 7th loops are threaded with 75D / 72F fine denier light network structure regenerated polyester DTY filament, and the 2nd, 4th, 6th and 8th loops are threaded with 40S cotton and biodegradable polyester fiber blended yarn; The triangle arrangement mode of the 8-loop system of one complete structure is as follows: the 1st and 3rd needle cylinder needles A correspond to tuck, the 1st and 3rd needle cylinder needles B correspond to non-working, and the 1st and 3rd needle disc needles A correspond to loop; the 5th and 7th needle cylinder needles A and B correspond to non-working, and the 5th and 7th needle disc needles A correspond to loop; the 2nd, 4th, 6th and 8th needle cylinder needles A and B correspond to loop, and the 2nd, 4th, 6th and 8th needle disc needles A correspond to non-working; Table 1 is a triangle and threading arrangement table of one complete structure The yarn arrangement corresponds to: 1 represents 75D / 72F fine denier light network structure regenerated polyester DTY filament, and 2 represents 40S cotton and biodegradable polyester fiber blended yarn; Triangular configuration symbols are as follows: "Δ" indicates a stitch by the dial needle, "Δ" indicates a stitch by the cylinder needle, "∩" indicates a tuck stitch by the cylinder needle, and "— " indicates that the dial needle or the cylinder needle is not working. The average length of the 75D / 72F fine denier light network structure regenerated polyester DTY filament in the biodegradable weft-knitted fabric with double-layer effect is 23.8 cm in the double-face tuck-and-loop interweaving and 21.4 cm in the single-face loop knitting; and the average length of the 40S cotton and biodegradable polyester fiber blended yarn in the biodegradable weft-knitted fabric with double-layer effect is 24.8 cm.

6. A process for producing a biodegradable weft knitted fabric of dual effect according to claim 5, characterized in that: The post-finishing process comprises: cloth arranging, end sewing, oxygen bleaching, first acid washing, first cold washing, pre-setting, terylene dyeing, reduction washing, second acid washing, second cold washing, cotton dyeing, third cold washing, third acid washing, soaping, hot washing, fourth cold washing, color fixing, dehydration, setting and drying, finished product setting, rolling, and finished product inspection and detection. The oxygen bleaching process is as follows: cold water is injected into the cylinder of the L-shaped high-temperature and high-pressure double-liquid dyeing machine of Chao Yaji according to a bath ratio of 1:10, the main pump is started, and the fabric is put into the machine for circulation; the "dosing oxygen bleaching process program" is started, and JFC penetrant dilute solution accounting for 1.0-1.02% of the weight of the fabric and JET bath softener dilute solution accounting for 1.0-1.02% of the weight of the fabric are sequentially injected into the dyeing machine from the additional cylinder of the dyeing machine in a "linear dosing mode"; after 5 minutes of circulation, flake alkali dilute solution accounting for 1.0-1.02% of the weight of the fabric and hydrogen peroxide dilute solution accounting for 4.0-4.1% of the weight of the fabric are sequentially injected into the dyeing machine from the additional cylinder of the dyeing machine in a "linear dosing mode"; after 3 minutes of circulation, the solution and the fabric in the dyeing machine are heated from room temperature to 100℃ at a heating rate of 2.0℃ / min and are kept at 100℃ for 30 minutes; then, the temperature is decreased to 80℃ at a rate of 3.0℃ / min, and overflow washing is performed to 60℃ for liquid discharge; The first acid washing process is as follows: cold water is injected into the cylinder of the L-shaped high-temperature and high-pressure double-liquid dyeing machine of Chao Yaji according to a bath ratio of 1:10, the main pump and the acid washing program are started, the water solution and the fabric in the cylinder are heated from room temperature to 60℃ at a heating rate of 4.0℃ / min, and the solution is kept at 60℃ for circulation; then, glacial acetic acid dilute solution accounting for 0.3-0.31% of the weight of the fabric is injected into the dyeing machine from the additional cylinder; after 15 minutes of 60℃ keeping, the solution is discharged; The first cold washing process is as follows: cold water is injected into the cylinder of the L-shaped high-temperature and high-pressure double-liquid dyeing machine of Chao Yaji according to a bath ratio of 1:10, the main pump and the cold washing program are started, and the fabric is cold washed at room temperature for 10 minutes and then discharged; then, the first cold washing process is repeated once. Preforming process: using Taiwan LiGeng stenter to preform, adding dip padding water, controlling the pick-up rate of 85-90%, the setting temperature of the first to tenth section of the oven is respectively: 160℃, 170℃, 180℃, 180℃, 180℃, 180℃, 180℃, 180℃, 180℃, 170℃; the fan speed of the oven is set to 1600r / min, the control speed is 24-25m / min, the temperature of the fabric is controlled below 50℃; Dyeing process: according to the bath ratio 1:10, cold water is added into the cylinder of Chao Asia L type high temperature and high pressure double liquid dyeing machine, the main pump is started, and the fabric is circulated; the additional cylinder of the dyeing machine is sequentially added with 0.3-0.31% acetic acid diluted solution and 0.6-0.61% high temperature leveling agent diluted solution based on the weight of the fabric; after circulating for 3 minutes, 0.39-0.393% fully dissolved disperse dye solution is added into the dyeing cylinder; after circulating for 3 minutes, the pH value of the dyeing solution in the cylinder is tested, and the pH value of the dyeing solution in the cylinder is controlled between 3.5-4.2; the dyeing program is started, the temperature is raised from room temperature to 70℃ at a rate of 3.0℃ / min, and the temperature is kept for 5 minutes; the temperature is raised to 110℃ at a rate of 1.5℃ / min, and the temperature is kept for 5 minutes; then the temperature is raised to 130℃ at a rate of 1.5℃ / min, and the temperature is kept for 30 minutes; then the temperature is lowered to 110℃ at a rate of 2.5℃ / min; then the temperature is lowered to 80℃ at a rate of 3.0℃ / min, and the color is tested; after the color is confirmed, the liquid is discharged; Reduction washing process: according to the bath ratio 1:10, cold water is added into the cylinder of Chao Asia L type high temperature and high pressure double liquid dyeing machine, the main pump and the reduction washing program are started, the temperature is raised from room temperature to 60℃ at a rate of 4.0-4.5℃ / min, and the temperature is kept for circulating operation; 0.8-0.81% flake alkali diluted solution is added, and after circulating for 3 minutes, the temperature is raised from 60℃ to 70℃ at a rate of 2.5℃ / min, and the temperature is kept for circulating operation; then 1.5-1.51% sodium hydrosulfite diluted solution is added, and after circulating for 3 minutes, the temperature is raised from 70℃ to 80℃ at a rate of 2.5℃ / min, and the temperature is kept for 20 minutes, then overflow washing is performed to 60℃, and the liquid is discharged; according to the bath ratio 1:10, cold water is added into the cylinder of Chao Asia L type high temperature and high pressure double liquid dyeing machine, the main pump is started, and the fabric is circulated for 5 minutes at room temperature, then the liquid is discharged; Second acid pickling process: according to the bath ratio 1:10, cold water is added into the cylinder of Chao Asia L type high temperature and high pressure double liquid dyeing machine, the main pump and the acid pickling program are started, the temperature of the water solution in the cylinder and the fabric is raised from room temperature to 60℃ at a rate of 4.0℃ / min, and the temperature is kept for circulating operation; then 0.3-0.31% glacial acetic acid diluted solution is added from the additional cylinder into the dyeing machine; after keeping the temperature at 60℃ for 15 minutes, the liquid is discharged; Second cold washing process: according to the bath ratio 1:10, cold water is added into the cylinder of Chao Asia L type high temperature and high pressure double liquid dyeing machine, the main pump and the cold washing program are started, and the fabric is circulated for 10 minutes at room temperature, then the liquid is discharged; then the second cold washing process is repeated once. Cotton dyeing process: according to bath ratio 1:10, inject cold water into the cylinder of Chao Yaji L type high temperature and high pressure double liquid dyeing machine, start the main pump and "active dye feeding dyeing" program, make the water solution and fabric in the cylinder from room temperature to 40 DEG C; from the additional cylinder of the dyeing machine, inject the solution of sodium sulphate dissolved in the proportion of 60-60.6% of the weight of the fabric into the cylinder of the dyeing machine; after circulating for 10 minutes, inject the active dye solution fully dissolved in the proportion of 2.52-2.523% of the weight of the fabric in 20 minutes in "linear feeding mode"; after circulating for 10 minutes, inject the pure alkali solution fully dissolved in the proportion of 2-2.1% of the weight of the fabric in 5 minutes from the additional cylinder of the dyeing machine into the cylinder of the dyeing machine in "linear feeding mode"; after circulating for 10 minutes, increase the temperature from 40 DEG C to 60 DEG C at the rate of 1 DEG C / min; after circulating for 10 minutes, inject the pure alkali solution fully dissolved in the proportion of 18-18.1% of the weight of the fabric in 20 minutes in "linear feeding mode", continue to circulate for 50 minutes and take sample for color; the color is qualified, overflow wash for 10 minutes and then discharge the liquid; Third cold washing process: according to bath ratio 1:10, inject cold water into the cylinder of Chao Yaji L type high temperature and high pressure double liquid dyeing machine, start the main pump and cold washing program, circulate for 10 minutes and then discharge the liquid; Third acid washing process: according to bath ratio 1:10, inject cold water into the cylinder of Chao Yaji L type high temperature and high pressure double liquid dyeing machine, start the main pump and acid washing program, make the water solution and fabric in the cylinder from room temperature to 60 DEG C at the rate of 4.0 DEG C / min, and then inject the ice acetic acid diluted solution in the proportion of 0.3-0.31% of the weight of the fabric from the additional cylinder into the dyeing machine; after 60 DEG C circulating for 15 minutes, discharge the liquid; Soaping process: according to bath ratio 1:10, inject cold water into the cylinder of Chao Yaji L type high temperature and high pressure double liquid dyeing machine, start the main pump and soaping program, inject the diluted soaping agent solution in the proportion of 0.4-0.41% of the weight of the fabric from the additional cylinder of the dyeing machine into the dyeing machine; after circulating for 3 minutes, increase the temperature from room temperature to 85 DEG C at the rate of 3 DEG C / min, keep for 20 minutes, overflow wash until the water temperature is 60 DEG C, and then discharge the liquid; Hot washing process: according to bath ratio 1:10, inject cold water into the cylinder of Chao Yaji L type high temperature and high pressure double liquid dyeing machine, start the main pump and hot washing program, make the water solution and fabric in the dyeing machine from room temperature to 60 DEG C at the rate of 4.0 DEG C / min, circulate for 10 minutes and then discharge the liquid; Fourth cold washing process: according to bath ratio 1:10, inject cold water into the cylinder of Chao Yaji L type high temperature and high pressure double liquid dyeing machine, start the main pump and cold washing program, circulate for 10 minutes and then discharge the liquid; Fixing process: according to bath ratio 1:10, inject cold water into the cylinder of Chao Yaji L type high temperature and high pressure double liquid dyeing machine, start the main pump and fixing program, inject the diluted fixing agent solution in the proportion of 2.0-2.04% of the weight of the fabric from the additional cylinder of the dyeing machine into the dyeing machine, increase the temperature from room temperature to 45 DEG C at the rate of 2.5 DEG C / min, keep for 20 minutes and then discharge the liquid; Drying and setting: the semi-finished product after dewatering is dried and set by a 8-section drying and setting machine of Dianfu, and the first to the eighth section of the drying and setting machine is not passed through water, and the temperature of the first to the eighth section of the drying and setting machine is set to be 110℃, 120℃, 120℃, 120℃, 120℃, 120℃, 120℃, 110℃ respectively, the rotating speed of the fan of the drying and setting machine is set to be 1600r / min, the speed of the machine is controlled to be 19-20m / min, and the temperature of the fabric after falling is controlled to be below 50℃; Drying and setting: the semi-finished product after dewatering is dried and set by a 8-section drying and setting machine of Dianfu, and the first to the eighth section of the drying and setting machine is not passed through water, and the temperature of the first to the eighth section of the drying and setting machine is set to be 110℃, 120℃, 120℃, 120℃, 120℃, 120℃, 120℃, 110℃ respectively, the rotating speed of the fan of the drying and setting machine is set to be 1600r / min, the speed of the machine is controlled to be 19-20m / min, and the temperature of the fabric after falling is controlled to be below 50℃;

Images