CN113834786B - Rapid detection method for cloth color difference quality under pretreatment - Google Patents
Rapid detection method for cloth color difference quality under pretreatment Download PDFInfo
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- 239000004744 fabric Substances 0.000 title claims abstract description 162
- 238000001514 detection method Methods 0.000 title claims abstract description 33
- 238000005406 washing Methods 0.000 claims abstract description 72
- 238000009958 sewing Methods 0.000 claims abstract description 41
- 238000000034 method Methods 0.000 claims abstract description 32
- 238000004043 dyeing Methods 0.000 claims abstract description 26
- 238000001035 drying Methods 0.000 claims abstract description 17
- 230000004075 alteration Effects 0.000 claims abstract description 9
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 21
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 18
- 239000003513 alkali Substances 0.000 claims description 15
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 8
- 238000004090 dissolution Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 2
- 238000005259 measurement Methods 0.000 claims 1
- 230000000007 visual effect Effects 0.000 claims 1
- 238000004045 reactive dyeing Methods 0.000 abstract description 3
- 239000004753 textile Substances 0.000 abstract description 3
- 239000000975 dye Substances 0.000 description 24
- 238000012360 testing method Methods 0.000 description 15
- 238000010025 steaming Methods 0.000 description 12
- 239000007788 liquid Substances 0.000 description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000005096 rolling process Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 238000011179 visual inspection Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 239000002689 soil Substances 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000009980 pad dyeing Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005517 mercerization Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000985 reactive dye Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/30—Staining; Impregnating ; Fixation; Dehydration; Multistep processes for preparing samples of tissue, cell or nucleic acid material and the like for analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/29—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using visual detection
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/36—Textiles
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Pathology (AREA)
- Immunology (AREA)
- General Physics & Mathematics (AREA)
- Biochemistry (AREA)
- Engineering & Computer Science (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Food Science & Technology (AREA)
- Textile Engineering (AREA)
- Medicinal Chemistry (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Coloring (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
The invention relates to the technical field of textile printing and dyeing detection, in particular to a rapid detection method for cloth color difference quality under pretreatment. The rapid detection method for the cloth color difference quality under pretreatment comprises the following steps: preparing the fabric, preparing a dye auxiliary agent, simulating dip dyeing, soaping, drying the fabric, sewing a sample and detecting and grading. According to the detection method disclosed by the invention, the dip dyeing process is simulated by using the washing machine by using the reactive dyeing principle, the dyeing, washing and drying processes of the fabric are completed in a short time, the quality of the chromatic aberration of the fabric under pretreatment is rapidly judged, the detection equipment is simple, the operation is convenient, the cost of the dye auxiliary agent is low, and the detection result is accurate.
Description
Technical Field
The invention relates to the technical field of textile printing and dyeing detection, in particular to a rapid detection method for cloth color difference quality under pretreatment.
Background
The pretreatment process is positioned at the key position of the whole fabric processing, the quality of the pretreated fabric plays a critical role in the post-process (dyeing, printing and finishing), and the quality of the fabric under the rapid detection pretreatment plays a key role in the whole dyeing and finishing production and the real-time control of the pretreatment quality.
The common detection mode is that long-vehicle lofting is adopted, the long-vehicle lofting needs to be produced by independently batching liquid, meanwhile, an operator needs to perform on-site operation according to the operation requirement of a large order, and each variety detected by the long-vehicle lofting detection method at least needs to be batched with 100L of liquid, so that the time cost, the labor cost and the equipment cost are high, and the raw material cost is high. It is therefore desirable to find an alternative that enables rapid detection.
Disclosure of Invention
The invention aims to solve the technical problems that: the method for rapidly detecting the color difference quality of the cloth under pretreatment is characterized in that a reactive dyeing principle is utilized to simulate a dip dyeing process by a washing machine, dyeing, washing and drying processes of the fabric are completed in a short time, the color difference quality of the cloth under pretreatment is rapidly judged, detection equipment is simple, operation is convenient, cost of a dye auxiliary agent is low, and a detection result is accurate.
The invention relates to a rapid detection method for cloth color difference quality under pretreatment, which comprises the following steps:
(1) Preparing a fabric: taking a rectangular fabric to be tested, sewing two long selvedges into a 'tubular' shape, and obtaining a sample fabric;
(2) Preparing a dye auxiliary agent: taking hot water at 60 ℃ as a solvent, and respectively taking dye, anhydrous sodium sulfate and sodium carbonate as solutes to prepare dye liquor with the concentration of 48g/L, anhydrous sodium sulfate solution with the concentration of 140g/L and sodium carbonate solution with the concentration of 350 g/L;
(3) And (3) simulating dip dyeing: placing sample fabric into a full-automatic washing machine, setting a washing and dehydrating procedure, automatically injecting clear water at 60 ℃ for 1.5L, starting the washing procedure of the washing machine, adding 5L of anhydrous sodium sulfate solution when washing is started for 10min, adding 160-170mL of dye liquor when washing is started for 20min, adding 330-340mL of dye liquor when washing is started for 25min, adding 330-340mL of pure alkali liquor when washing is started for 40min, adding 660-670mL of pure alkali liquor when washing is started for 45min, and dehydrating for 3min after washing for 60min to obtain dyed sample fabric;
(4) And (3) soaping: putting the dyed sample fabric into a semi-automatic washing machine, and adding clear water for washing and dehydrating to obtain a soaped sample fabric;
(5) And (3) drying the fabric: placing the soaped sample fabric into a dryer for drying to obtain dried sample fabric;
(6) Sewing a sample: sewing the dried sample fabric to obtain a sewing sample;
(7) Detecting and grading: the sewing sample is according to AATCCEP 1 -2018, visually rating by a color-changing gray card rating program, and reading by using CIE delta value of a Datacolor electronic color-measuring and positioning test fabric.
In the step (1), the weight of the fabric to be detected is 300-500g, preferably 400g. Through multiple tests, the evaluation result of the washed fabric is the most accurate within the range of 300-500g, excessive fabrics can cause uneven dyeing of the washed fabric, and the evaluation of the grade is easily influenced by the condition of the fabric flowers; too little fabric can also affect the rating.
The full width of the fabric to be tested in the weft direction is 140-160cm, and the width in the warp direction is 20-25cm.
The fabric to be measured is sewn into a cylinder shape, so that uneven dyeing of the fabric surface caused by entanglement in the washing process can be prevented.
In the step (2), 500mL of hot water at 60 ℃ is taken, 24g of dye is added, and stirring and dissolving are carried out, so as to obtain dye liquor; adding 700g of anhydrous sodium sulfate into 5000mL of hot water at 60 ℃ and stirring for dissolution to obtain an anhydrous sodium sulfate solution; 1000mL of hot water at 60 ℃ is taken, 350g of sodium carbonate is added, and the mixture is stirred and dissolved to obtain pure alkali liquor.
In the step (3), the full-automatic washing machine is preferably a full-automatic washing machine with model EG80128X58GUI manufactured by Qingdao sea drum washing machine Co., ltd.
In the step (3), the full-automatic washing machine is operated by using only "washing + dehydrating" and does not perform rinsing.
The charging sequence and time node control of the step (3) are formulated according to the reactive dye dyeing principle, anhydrous sodium sulphate is added to promote dye dyeing, and then dye liquor and alkali liquor for fixation are added in different time periods, and then the cloth is washed for a certain time to ensure a certain moisture content of the cloth cover.
In the step (4), the clear water temperature is 60 ℃, the washing time is 20-30min, and the dehydration time is 2-5min; preferably, the washing time is 30min and the dehydration time is 3min.
In the step (4), the semi-automatic washing machine is preferably a semi-automatic washing machine of XPB90-1169JS manufactured by Qingdao sea washing machine Co., ltd.
In the step (5), the drying temperature is 50-60 ℃, preferably 60 ℃, and the drying time is determined according to the fabric and the fabric is dried. The dryer is preferably a model YG (B) 743 dryer manufactured by Darong textile instruments, inc. of Wittig.
In the step (6), the dried sample fabric is folded in front inwards along the warp direction from the central line, the left cloth edge and the right cloth edge are aligned, the stitching is carried out at the position which is 1cm away from the cloth edge by 15 soil along the warp direction, the folded part is cut along the central line after the sewing is finished, the left middle cloth edge and the right middle cloth edge are obtained, then the left cloth edge and the left middle cloth edge are sewn, the right cloth edge and the right middle cloth edge are sewn to form two 'cylinders', the front surface of the cloth sample is positioned on the outer surface of the 'cylinder', and the sewn edge is positioned on the inner surface of the 'cylinder', so that the sewn sample is obtained.
The color difference between one side and the middle of the test sample and between the other side and the middle and between the sides can be intuitively observed by sewing the sample by adopting the method.
Compared with the prior art, the invention has the following beneficial effects:
(1) The invention adopts a washing machine dip dyeing method for measuring the chromatic aberration of the cloth under pretreatment, namely, the reactive dyeing principle is utilized to simulate the dip dyeing process by using a washing machine, the dyeing, washing and drying processes of the fabric are completed in a short time, the chromatic aberration quality of the cloth under pretreatment is rapidly judged, the pad dyeing pad drying and pad steaming processes required by the dyeing and lofting of a cart are omitted, and the time efficiency waste caused by the chromatic aberration of the dyeing and lofting of the cart and the cost waste caused by the amplifying of the fabric are avoided;
(2) The quick detection method can be completed in a short time, can be completed by using a washing machine and a dryer, has simple equipment, can be operated by one operator, has low cost of dye auxiliary agents, and can dye 3-5 thick fabric varieties by using 18L of feed liquid, wherein the feed liquid is saved by about 480L/time by using the large-vehicle lofting detection method.
Drawings
FIG. 1 is a schematic illustration of a selvedge when a sample is sewn according to the present invention;
in the figure: 1. a left cloth edge; 2. a suture; 3. left middle selvedge; 4. a center line; 5. a right middle cloth edge; 6, right cloth edge.
Detailed Description
The invention is further described below in conjunction with specific embodiments, which should not be construed as limiting the scope of the invention, as many insubstantial modifications and adaptations of the invention to those skilled in the art may become apparent to those in light of the foregoing disclosure.
Example 1
The rapid detection method provided by the invention is used for testing the color difference of the CVC16 CVC12 CVC 108 CVC 58/59 3/1S mercerized cloth.
The method comprises the following specific steps:
(1) Preparing a fabric: taking a rectangular fabric to be tested with the weft full width of 160cm and the warp width of 20cm, and sewing two long selvedges to form a cylinder shape to obtain a sample fabric;
(2) Preparing a dye auxiliary agent: adding 24g of dye into 500mL of hot water at 60 ℃ and stirring for dissolution to obtain dye liquor; adding 700g of anhydrous sodium sulfate into 5000mL of hot water at 60 ℃ and stirring for dissolution to obtain an anhydrous sodium sulfate solution; 1000mL of hot water at 60 ℃ is taken, 350g of sodium carbonate is added, and the mixture is stirred and dissolved to obtain pure alkali liquor;
(3) And (3) simulating dip dyeing: placing the sample fabric into a full-automatic washing machine (EG 80128X58 GUI), setting a washing and dehydrating procedure, adding 60 ℃ clean water for 1.5L, starting the washing procedure of the washing machine, adding all anhydrous sodium sulfate solution when washing is started for 10min, adding 1/3 dye liquor when washing is started for 20min, adding the rest 2/3 dye liquor when washing is started for 25min, adding 1/3 pure alkali liquor when washing is started for 40min, adding the rest 2/3 pure alkali liquor when washing is started for 45min, and dehydrating for 3min after washing for 60min to obtain the dyed sample fabric;
(4) And (3) soaping: putting the dyed sample fabric into a semi-automatic washing machine (XPB 90-1169 JS), adding clear water at 60 ℃, washing for 30min, and dehydrating for 3min to obtain the soaped sample fabric;
(5) And (3) drying the fabric: putting the soaped sample fabric into a dryer (YG (B) 743), and drying at 60 ℃ to obtain dried sample fabric;
(6) Sewing a sample: folding the front surface of the dried sample fabric inwards from a central line 4 along the warp direction, aligning a left cloth edge 1 and a right cloth edge 6, sewing at a sewing line 2 which is positioned at a position which is 1cm away from the cloth edge 15 soil along the warp direction, cutting the folded part along the central line 4 after sewing to obtain a left middle cloth edge 3 and a right middle cloth edge 5, sewing the left cloth edge 1 and the left middle cloth edge 3, sewing the right cloth edge 6 and the right middle cloth edge 5 to form two 'cylinders', positioning the front surface of the cloth sample on the outer surface of the 'cylinder', and positioning the sewing edge on the inner surface of the 'cylinder', thereby obtaining a sewing sample;
(7) Detecting and grading: the sewing sample is according to AATCCEP 1 -2018, visually rating by a color-changing gray card rating program, and reading by using CIE delta value of a Datacolor electronic color-measuring and positioning test fabric.
The detection results are as follows:
(1) Visual inspection:
in the edge: 4/5 stage; edge to edge: 4/5 stage.
(2) And (3) mechanically testing:
side 1: Δl: -0.20, Δa:0.06, Δb: -0.08, Δc: -0.10, Δh: -0.08, Δe:0.26.
side 2 is measured in the middle: Δl: -0.15, Δa:0.05, Δb:0.03, Δc: -0.04, Δh: -0.08, Δe:0.21.
side 1 and side 2: Δl: -0.10, Δa:0.03, Δb: -0.05, Δc: -0.08, Δh: -0.06, Δe:0.16.
comparative example 1
The comparative example adopts a conventional long-vehicle lofting detection method to test the chromatic aberration of cloth under mercerization of CVC 16X 12X 108X 56X 58/59 3/1S.
The method comprises the following specific steps:
(1) 100L of dye is prepared according to a sample preparation prescription and a cart factor of a dyeing laboratory.
(2) Tearing off 4-5 m of lofting cloth after the upper mark of the white cloth roll is clear before lofting, and sewing the lofting cloth with at least 60m of guiding cloth with the right side upwards, wherein the sewing head is required to be flat and even; the cleaning circulation pump passes through a filter screen (2) before lofting to ensure smoothness; the trough and the roller are cleaned before lofting; and during lofting, the tension of the tension frame is adjusted to be 1.0PAR, so that the lofting and the tension of big goods are ensured to be consistent.
(3) Setting the left, middle and right pressures (according to different fabrics), opening a feed liquid circulating pump, and starting to process and roll to dry and then process and roll to steam after the technological parameters consistent with the big goods reach the standard requirements.
(4) Titrating the alkali solution concentration of the fixation liquid (4.9+/-0.2 g/L of caustic soda and 30+/-2 g/L of calcined soda) before rolling, steaming and lofting; cleaning the steaming groove, the washing groove and the steam box.
(5) And after the technological parameters consistent with the big goods reach the standard requirements, rolling and steaming the rolled and dried lofting cloth together with the guiding cloth and the rolling and steaming guiding cloth in a consistent driving mode.
(6) After the steaming step, the sample fabric was cut into a rectangular fabric sample having a warp direction of 20cm and a weft direction (the weft direction length is not uniformly defined, and the fabric widths are not uniform), and the sample was sewn according to the method of example 1.
(7) The sewing sample is according to AATCCEP 1 -2018, visually rating by a color-changing gray card rating program, and reading by using CIE delta value of a Datacolor electronic color-measuring and positioning test fabric.
The detection results are as follows:
(1) Visual inspection:
in the edge: 4/5 level, edge to edge: 4/5 stage.
(2) And (3) mechanically testing:
side 1: Δl: -0.16, Δa:0.07, Δb: -0.08, Δc: -0.10, Δh: -0.08, Δe:0.27.
side 2 is measured in the middle: Δl: -0.13, Δa:0.05, Δb:0.02, Δc: -0.03, Δh: -0.08, Δe:0.22.
side 1 and side 2: Δl: -0.10, Δa:0.05, Δb: -0.06, Δc: -0.08, Δh: -0.06, Δe:0.18.
example 2
The rapid detection method provided by the invention is used for testing the color difference of the CM 80/2X CM80/2T X160X 69X 62/63CP mercerized cloth.
The method comprises the following specific steps:
(1) Preparing a fabric: taking a rectangular fabric to be tested with the weft full width of 160cm and the warp width of 20cm, and sewing two long selvedges to form a cylinder shape to obtain a sample fabric;
(2) Preparing a dye auxiliary agent: adding 24g of dye into 500mL of hot water at 60 ℃ and stirring for dissolution to obtain dye liquor; adding 700g of anhydrous sodium sulfate into 5000mL of hot water at 60 ℃ and stirring for dissolution to obtain an anhydrous sodium sulfate solution; 1000mL of hot water at 60 ℃ is taken, 350g of sodium carbonate is added, and the mixture is stirred and dissolved to obtain pure alkali liquor;
(3) And (3) simulating dip dyeing: placing the sample fabric into a full-automatic washing machine (EG 80128X58 GUI), setting a washing and dehydrating procedure, adding 60 ℃ clean water for 1.5L, starting the washing procedure of the washing machine, adding all anhydrous sodium sulfate solution when washing is started for 10min, adding 1/3 dye liquor when washing is started for 20min, adding the rest 2/3 dye liquor when washing is started for 25min, adding 1/3 pure alkali liquor when washing is started for 40min, adding the rest 2/3 pure alkali liquor when washing is started for 45min, and dehydrating for 3min after washing for 60min to obtain the dyed sample fabric;
(4) And (3) soaping: putting the dyed sample fabric into a semi-automatic washing machine (XPB 90-1169 JS), adding clear water at 60 ℃, washing for 30min, and dehydrating for 3min to obtain the soaped sample fabric;
(5) And (3) drying the fabric: putting the soaped sample fabric into a dryer (YG (B) 743), and drying at 60 ℃ to obtain dried sample fabric;
(6) Sewing a sample: folding the front surface of the dried sample fabric inwards from a central line 4 along the warp direction, aligning a left cloth edge 1 and a right cloth edge 6, sewing at a sewing line 2 which is positioned at a position which is 1cm away from the cloth edge 15 soil along the warp direction, cutting the folded part along the central line 4 after sewing to obtain a left middle cloth edge 3 and a right middle cloth edge 5, sewing the left cloth edge 1 and the left middle cloth edge 3, sewing the right cloth edge 6 and the right middle cloth edge 5 to form two 'cylinders', positioning the front surface of the cloth sample on the outer surface of the 'cylinder', and positioning the sewing edge on the inner surface of the 'cylinder', thereby obtaining a sewing sample;
(7) Detecting and grading: the sewing sample is according to AATCCEP 1 -2018, visually rating by a color-changing gray card rating program, and reading by using CIE delta value of a Datacolor electronic color-measuring and positioning test fabric.
The detection results are as follows:
(1) Visual inspection:
in the edge: 4/5 stage; edge to edge: 4/5 stage.
(2) And (3) mechanically testing:
side 1: Δl: -0.19, Δa:0.03, Δb: -0.15, Δc: -0.14, Δh:0.06, Δe:0.22.
side 2 is measured in the middle: Δl: -0.13, Δa:0.05, Δb: -0.09, Δc: -0.08, Δh:0.05, Δe:0.17.
side 1 and side 2: Δl: -0.06, Δa:0.03, Δb: -0.05, Δc: -0.10, Δh:0.07, Δe:0.12.
comparative example 2
The comparative example adopts a conventional long vehicle lofting detection method to test the color difference of the mercerized cloth under CM 80/2X CM80/2T 160X 69X 62/63 CP.
The method comprises the following specific steps:
(1) 100L of dye is prepared according to a sample preparation prescription and a cart factor of a dyeing laboratory.
(2) Tearing off 4-5 meters of lofting cloth and at least 60 meters of guiding cloth to be sewn together after the upper mark of the white cloth roll is clear before lofting, and the sewing head is required to be flat and even and firm; the cleaning circulation pump passes through a filter screen (2) before lofting to ensure smoothness; the trough and the roller are cleaned before lofting; and during lofting, the tension of the tension frame is adjusted to be 1.0PAR, so that the lofting and the tension of big goods are ensured to be consistent.
(3) Setting the left, middle and right pressures (according to different fabrics), opening a feed liquid circulating pump, and starting the machine to process and roll after the technological parameters consistent with the big goods reach the standard requirements.
(4) Titrating the alkali concentration of the fixation liquid before rolling, steaming and lofting (caustic soda 4.9 g/L sodium carbonate is 30 g/L sodium carbonate is 2 g/L); cleaning the steaming groove, the washing groove and the steam box.
(5) And after the technological parameters consistent with the big goods reach the standard requirements, rolling and steaming the rolled and dried lofting cloth together with the guiding cloth and the rolling and steaming guiding cloth in a consistent driving mode.
(6) After the steaming step, the sample fabric was cut into a rectangular fabric sample having a warp direction of 20cm and a weft direction (the weft direction length is not uniformly defined, and the fabric widths are not uniform), and the sample was sewn according to the method of example 1.
(7) The sewing sample is according to AATCCEP 1 -2018, visually rating by a color-changing gray card rating program, and reading by using CIE delta value of a Datacolor electronic color-measuring and positioning test fabric.
The detection results are as follows:
(1) Visual inspection:
in the edge: 4/5 stage; edge to edge: 4/5 stage.
(2) And (3) mechanically testing:
side 1: Δl: -0.21, Δa:0.13, Δb: -0.18, Δc: -0.12, Δh:0.08, Δe:0.28.
side 2 is measured in the middle: Δl: -0.10, Δa:0.06, Δb: -0.08, Δc: -0.05, Δh:0.03, Δe:0.12.
side 1 and side 2: Δl: -0.13, Δa:0.07, Δb: -0.10, Δc: -0.11, Δh:0.06, Δe:0.20.
from the detection results of the examples 1-2 and the comparative examples 1-2, the detection method disclosed by the invention is basically consistent with the finished pattern detection result of the conventional long-vehicle lofting detection method, the quality of cloth color difference under pretreatment can be effectively evaluated, pad dyeing and pad drying and pad steaming procedures required by the dyeing and lofting of a cart are omitted, time efficiency waste caused by the dyeing and lofting of the cart and cost waste caused by the color difference observation of the cloth amplification are avoided, and the detection method is simple and efficient and low in cost.
Claims (5)
1. A rapid detection method for cloth color difference quality under pretreatment is characterized in that: the method comprises the following steps:
(1) Preparing a fabric: taking a rectangular fabric to be tested, sewing two long selvedges into a 'tubular' shape, and obtaining a sample fabric;
(2) Preparing a dye auxiliary agent: taking hot water at 60 ℃ as a solvent, and respectively taking dye, anhydrous sodium sulfate and sodium carbonate as solutes to prepare dye liquor with the concentration of 48g/L, anhydrous sodium sulfate solution with the concentration of 140g/L and sodium carbonate solution with the concentration of 350 g/L;
(3) And (3) simulating dip dyeing: placing sample fabric into a full-automatic washing machine, setting a washing and dehydrating procedure, automatically injecting clear water at 60 ℃ for 1.5L, starting the washing procedure of the washing machine, adding 5L of anhydrous sodium sulfate solution when washing is started for 10min, adding 160-170mL of dye liquor when washing is started for 20min, adding 330-340mL of dye liquor when washing is started for 25min, adding 330-340mL of pure alkali liquor when washing is started for 40min, adding 660-670mL of pure alkali liquor when washing is started for 45min, and dehydrating for 3min after washing for 60min to obtain dyed sample fabric;
(4) And (3) soaping: putting the dyed sample fabric into a semi-automatic washing machine, adding clear water for washing and dehydrating to obtain the soaped sample fabric, wherein the clear water temperature is 60 ℃, the washing time is 20-30min, and the dehydrating time is 2-5min;
(5) And (3) drying the fabric: placing the soaped sample fabric into a dryer for drying to obtain dried sample fabric, wherein the drying temperature is 50-60 ℃;
(6) Sewing a sample: folding the front surface of the dried sample fabric inwards from a central line (4) along the warp direction, aligning a left cloth edge (1) and a right cloth edge (6), sewing at a seam line (2) which is 15+/-1 cm away from the cloth edge along the warp direction, cutting off the folded part along the central line (4) after sewing to obtain a left middle cloth edge (3) and a right middle cloth edge (5), sewing the left cloth edge (1) and the left middle cloth edge (3), sewing the right cloth edge (6) and the right middle cloth edge (5) to form two 'cylinders', enabling the front surface of the cloth sample to be positioned on the outer surface of the 'cylinder', and enabling the sewing edge to be positioned on the inner surface of the 'cylinder', thus obtaining a sewing sample;
(7) Detecting and grading: and carrying out visual rating on the sewn sample according to an AATCCEP1-2018 color-changing gray card rating program, and carrying out reading rating on CIE delta value of the tested fabric by utilizing Datacolor electronic color measurement and color matching positioning.
2. The method for rapidly detecting the chromatic aberration quality of cloth under pretreatment according to claim 1, which is characterized in that: in the step (1), the weight of the fabric to be detected is 300-500g.
3. The method for rapidly detecting the chromatic aberration quality of cloth under pretreatment according to claim 1, which is characterized in that: in the step (1), the full width of the fabric to be detected in the weft direction is 140-160cm, and the width in the warp direction is 20-25cm.
4. The method for rapidly detecting the chromatic aberration quality of cloth under pretreatment according to claim 1, which is characterized in that: in the step (2), 500mL of hot water at 60 ℃ is taken, 24g of dye is added, and stirring and dissolving are carried out, so as to obtain dye liquor; adding 700g of anhydrous sodium sulfate into 5000mL of hot water at 60 ℃ and stirring for dissolution to obtain an anhydrous sodium sulfate solution; 1000mL of hot water at 60 ℃ is taken, 350g of sodium carbonate is added, and the mixture is stirred and dissolved to obtain pure alkali liquor.
5. The method for rapidly detecting the chromatic aberration quality of cloth under pretreatment according to claim 1, which is characterized in that: in the step (3), the full-automatic washing machine is operated by using only "washing + dehydrating" and does not perform rinsing.
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