784 results about "Colour fastness" patented technology

The invention discloses an automatic textile color fastness rating method and system based on a CNN-Transform fusion model, and relates to the technical field of textile digital detection. And then, feature extraction and rating are carried out by using a CNN-Transform fusion model. After the features of the two are fused, weighting is carried out through an attention mechanism, classification is carried out through a full-connection layer, and the color fastness grade probability is determined through a Softmax function. Meanwhile, a cross entropy loss function is combined with a label smoothing technology, an Adam optimizer is utilized, and a learning rate attenuation strategy is matched to train the model. Finally, confidence evaluation and result correction are carried out on the rating result, automatic and high-precision textile color fastness rating is achieved, and the problems that an existing rating method is poor in accuracy, low in consistency, difficult to adapt to fine rating standards and the like are effectively solved.

The invention discloses a detection device for detecting color fastness of fabrics, which relates to the technical field of color fastness detection, and comprises a cover plate; further comprising: a detection assembly is arranged on one side of the cover plate, and the detection assembly comprises a rotating rod, a reciprocating gear is arranged below the rotating rod, and a bidirectional threaded rod is fixedly connected to the middle of the bottom surface of the reciprocating gear; wherein, a threaded block is threadedly connected to the outer side of the lower end of the bidirectional threaded rod, a guide rod is fixedly connected to the outer side of the threaded block, and a lower lifting plate is rotatably connected to the outer side of the threaded block; wherein an upper lifting plate is arranged on the outer side of the upper end of the bidirectional threaded rod, and a knocking hammer is inserted in the middle of the upper lifting plate; wherein a differential assembly is arranged on the outer side of the upper lifting plate, and the knocking hammer is brought into contact with the top surface of the lower lifting plate through the contraction of the lower lifting plate and the upper lifting plate, so as to achieve the purpose of simulating the knocking and hammering washing process of fabrics during home laundry, thereby facilitating the improvement of the accuracy of color fastness detection of fabrics.

The invention relates to the technical field of textile detection, in particular to a computer-aided textile color fastness prediction method, which comprises the following steps: acquiring multi-source data before and after a textile color fastness test through computer control equipment, including digital images, reflection spectrum data, process parameters and dye characteristic component data, carrying out pretreatment; extracting color difference features and spectrum similarity features, and screening by adopting a dimension reduction algorithm to form a core feature vector; a machine learning algorithm is adopted to construct a color fastness prediction model, parameters are optimized in combination with cross validation and an early stop mechanism, model fine tuning is executed, and a final optimization model is obtained; and outputting a color fastness grade prediction result, and carrying out spectrum similarity secondary verification. According to the method, objective, efficient and high-precision prediction of the color fastness grade of the textile is realized, and the problems of high subjectivity and low efficiency of traditional manual evaluation are solved.

The invention relates to the technical field of data analysis and evaluation, in particular to a color fastness evaluation method and system, and the method comprises the following steps: setting test conditions to simulate external factors encountered in the actual use or processing process of textiles; under the simulated test condition, treating the textile sample for a preset time; acquiring a multispectral image of the textile by adopting a multispectral imaging technology, and capturing color change of the textile; developing a self-adaptive image enhancement algorithm, and performing preprocessing; comparing spectral information of the multi-spectral image of the textile before and after processing based on chromatic aberration evaluation analysis so as to quantify the color fastness; analyzing the multispectral image after image enhancement by using a deep learning technology, extracting color attenuation features, and comprehensively evaluating a color fastness score; according to the color fastness evaluation method, basic color difference information is considered, advanced features such as textures, edges and local color modes of the textile are further included, and the accuracy and reliability of color fastness evaluation are remarkably improved.

The invention discloses a preparation method and application of a color master batch, belongs to the technical field of color master batch processing, and is used for solving the technical problem that the dispersity, color fastness and antistatic property of the color master batch in the prior art need to be further improved. The preparation method comprises the following steps: adding a modified pigment dispersion, modified polyurethane, polylactic acid and an auxiliary additive into a double-screw extruder, and carrying out melt extrusion and grain-sized dicing to obtain the color master batch. The modified polyurethane is used as a switch phase, the polylactic acid is used as a stationary phase, and the modified pigment dispersion and the auxiliary additive are used as assistants, and melt extrusion is carried out to obtain the color master batch. The antistatic property and color fastness of the color master batch are improved, and the mechanical property and dispersity of the color master batch are also improved.

The invention belongs to the technical field of textile, and relates to an efficient antibacterial fabric for preparing underwear and a dyeing and finishing method and application thereof.The provided antibacterial fabric is weft-knitted bird eye double-faced knitted fabric and is composed of polyester, cotton and modal fibers, the surface density is 180 g / m, surface yarn of the antibacterial fabric is hollow polyester fibers with special-shaped sections, and the surface yarn of the antibacterial fabric is hollow polyester fibers with special-shaped sections. The lining yarn is formed by weaving dacron and blended yarn according to the proportion of 2: 1. According to the method, dyeing and finishing of the antibacterial fabric, fabric weaving and ergonomic sewing are combined, the fabric which has efficient antibacterial performance, good moisture permeability and ultraviolet-proof performance and high color fastness is obtained, and the prepared antibacterial clothes are high in quick-drying performance, comfortable to wear and high in environmental adaptability.

The invention discloses a yellow reduction dyeing agent, a dyeing solution and a preparation method and application thereof, and relates to the technical field of dyeing and finishing. According to the yellow reduction dyeing agent provided by the invention, the 5-hydroxy-3-aminopyridine-2, 6-(1H, 3H)-diketone is adopted as a reduction dye, and the sodium sulfite is independently used as a reducing agent for reduction dyeing, so that the obtained dye leuco body is proper in dyeing capacity, and a dyed fabric can show excellent light brittle damage resistance. The fabric dyed by the dyeing agent has similar breaking strength before and after dyeing and even is slightly improved after dyeing and illumination, meanwhile, the color depth K / S of the fabric dyed by the dyeing agent reaches 3.2 or above, the dry and wet rubbing color fastness can reach level 4 or above, and the color fastness to illumination reaches level 6 or above.

The invention discloses a washable easily-colored wool fabric treatment process, belongs to the technical field of wool fabric processing, and aims to solve the technical problem that the dyeing degree, the anti-felting performance and the color fastness of wool fabrics in the prior art need to be further improved. The method includes the following steps that disulfide bonds of wool fibers are opened through L-cysteine, the washable and easy-to-color wool fabric is obtained, the pretreated wool fibers prepared through the method are grafted with methoxy polyethylene glycol methacrylate under catalysis of hydrogen peroxide and horse radish peroxidase, modified wool fibers are obtained, and the washable and easy-to-color wool fabric is obtained. After the modified wool fibers are woven into the wool fabric, the wool fabric is respectively subjected to padding modification by using the modified dye solution and the finishing liquid, so that the degree of dyeing, the anti-felting performance and the color fastness of the wool fabric are improved.

The invention belongs to the field of garment processing, and particularly relates to a garment color fastness gradient detection method based on visual processing, which comprises the following steps: carrying out standardized color fastness test on a garment sample, and collecting corresponding picture samples and color fastness parameters according to a test time sequence; preprocessing the collected picture samples according to a test time sequence, wherein the preprocessing comprises denoising, enhancement and color correction of the picture samples; extracting color features and texture features of the preprocessed picture samples, performing gradient classification on various picture samples according to a test time sequence, and establishing a color feature data set, a texture feature data set and a color fastness parameter data set which are associated; through standardized testing and automatic image acquisition, hundreds of samples can be processed at a time, predicted values are directly output based on a trained model, physical testing steps are reduced, key areas such as necklines and cuffs are positioned through area segmentation, local area testing is rapidly carried out, and compared with global testing, the method has the advantages of being high in pertinence and accuracy, and missing detection can be avoided.

The invention relates to the technical field of dyeing formula data processing, in particular to a dye formula optimization method and system for a disperse dark color one-bath dyeing process, and the method comprises the steps: constructing a process formula data set, calculating dye mixed spectrum data through a Beer-Lambert law, extracting features through a CNN and Transform prediction method, and fusing the features, thereby calculating chromatic aberration. And if the color difference exceeds the threshold value, optimizing the dye proportioning concentration by using a genetic algorithm. In the dyeing process, a dye bath fuzzy set is divided based on a fuzzy control model, a fuzzy rule is set, and the real-time process parameter adjustment amount is calculated and optimized in combination with the membership degree. After dyeing is completed, process image data are collected, and process chromatic aberration, maximum local chromatic aberration and color fastness are evaluated by means of a computer vision model. If the evaluation result does not reach the standard, the dye proportioning concentration and the real-time process parameter adjustment amount are adjusted, the chromatic aberration in the dyeing process of the dark-color sportswear is reduced, and the dye formula accuracy is improved.

The invention belongs to the technical field of textile printing and dyeing, relates to an efficient reactive dye ink-jet dyeing process and application, and aims to solve the problems that the traditional dyeing proofing process is tedious, the color difference of front and back surfaces of ink-jet dyeing is large, and the dye utilization rate is low. The process comprises the following steps: firstly, padding a fabric in an aqueous solution until the pick-up rate is controlled to be 60-120%, and carrying out ink-jet printing on reactive dye ink (the viscosity is 3-10 mPa.s and the surface tension is 20-50 mN / m) in a wet fiber swelling state; after printing, a 1%-10% alkali solution is immediately padded to promote permeation of the dye; and then pre-drying at 60-70 DEG C, steaming with saturated steam at 100-102 DEG C for 5-15 minutes, and washing with water to complete color fixation. According to the technology, the K / S ratio of the front face and the back face of the dyed fabric is larger than or equal to 0.95, the color fastness of the dry friction level 4-5 or above, the color fastness of the wet friction level 4-5 and the color fastness of the soaping level 4-5 are achieved, and the technology is suitable for green efficient dyeing of small-batch multi-variety fabric.

The invention belongs to the technical field of textile production, and relates to an active disperse dye and a dyeing process. The reactive disperse dye comprises a dye matrix and a bis-aziridine chain segment grafted on the dye matrix, and-OCH2-is introduced to an aromatic ring para-position of the bis-aziridine chain segment as an electron-donating group. A dyeing process: after active disperse dye is dissolved, dyeing the textile; the textile consists of more than one of natural fibers and synthetic fibers; the dyeing temperature is 85-100 DEG C, and the dyeing temperature is higher than Tg of the synthetic fibers. According to the invention, a '-OCH2-' electron-donating group is introduced in the para-position of an aromatic ring of a diaziridine chain segment, and the conjugation effect and the induction effect of the group reduce the activation energy of C-N bond breakage, so that carbene can be efficiently generated without depending on a high-temperature or acid-base environment; the problems that in the prior art, the condition for generating carbene through a diaziridine chain segment is harsh, and the color fastness of the dyed textile is low when supercritical CO2 fluid is adopted for dyeing are solved.

The invention discloses a preparation method and a dyeing process of 5, 5 '-dihydroxy-observation blue, and relates to the field of dye chemical industry. According to the preparation method of the 5, 5 '-dihydroxy-observation blue, provided by the invention, amino on the observation blue is converted into hydroxyl by utilizing the catalytic effect of the vanadium-based catalyst in an acid environment, the production of the 5, 5'-dihydroxy-observation blue can be realized through one-step reaction, the yield is up to 32.47% or above, and the obtained compound can be used as a blue direct dye and can be used for preparing blue dye. After being dyed, a fabric can present bright blue, the K / S value reaches 10 or above, and the fabric has excellent color fastness, and the color fastness to washing, the color fastness to soaping and the color fastness to wet rubbing all reach 4-5 levels.

The invention belongs to the technical field of textile dyeing and finishing, and relates to a method for washing dyed fabric based on a micro-nano bubble technology, which comprises the following steps of: continuously injecting water containing micro-nano bubbles at the temperature of 10-80 DEG C into a washing tank or a dyeing vat in which the dyed fabric is placed by utilizing a micro-nano bubble generating device until the fabric is completely immersed in the water; the micro-nano bubbles are continuously generated to wash the dyed fabric for 30 seconds to 10 minutes, and the process of washing the fabric by using the water containing the micro-nano bubbles can be repeated according to the color fastness requirement of the washed and dyed fabric; the fabric contains any one fiber component of cellulosic fiber, wool and silk; the micro-nano bubbles are air bubbles, oxygen bubbles, hydrogen bubbles, nitrogen bubbles, helium bubbles or argon bubbles; the minimum diameter of the micro-nano bubbles is smaller than or equal to the pore diameter of micropores in fibers after the fabric is swelled. In the washing process, only micro-nano bubble water is used, a soaping agent is not used, the washing time is shortened to 30s-10min, and the color fastness of the washed fabric is improved.

The invention relates to a polyamide synthesis technology, and discloses a self-coloring polyamide product as well as a preparation method and application thereof. The polyamide product contains a chromogenic structural unit, the chromogenic structural unit contains a dye chromogenic group, and the dye chromogenic group is selected from at least one of a solvent black group, an acid black group, an acid blue group and an acid yellow group; the polyamide product does not have a decoloration phenomenon after being cooked by an organic solvent, and the color depth difference value of the polyamide product does not exceed 0.2. The preparation method of the polyamide product comprises the following steps: carrying out a reaction I on a polyamide monomer, a dye condensate and an auxiliary agent under an anaerobic condition; the polyamide product provided by the invention not only is uniform in dyeing, good in stability and high in color fastness, but also omits a physical dyeing process in the preparation process, and is low in energy consumption, small in pollution, high in environmental protection property and good in economic benefit and social benefit.

The invention belongs to the technical field of textile dyeing, and provides a salt-free alkali-free electrostatic spray dyeing method for cellulosic fibers, which comprises the following steps: uniformly mixing polyethylene oxide, reactive dye and solvent to obtain electrostatic dye liquor; the method comprises the following steps: dissolving a cationic modifier and an alkaline color fixing agent in water to prepare a cationic modified solution, padding a cellulose fiber fabric, and drying to obtain a cationic modified cellulose fiber fabric; and spraying the electrostatic dyeing liquid to the surface of the cationic modified cellulose fiber fabric through electrostatic spraying, and carrying out open-width steaming color fixation and cleaning to obtain the electrostatic spraying dyed cellulose fiber fabric. The electrostatic spraying technology is adopted to replace traditional water bath dyeing, excellent K / S value, dye uptake and color fastness can be achieved without consuming a large amount of salt, alkali and water, water resource consumption and environmental pollution are remarkably reduced, and high-salinity and high-chroma printing and dyeing wastewater is avoided.

The invention discloses a dyeing method and system of a light nylon fabric, and relates to the technical field of fabric dyeing, and the dyeing method comprises the following steps: S1, carrying out pretreatment operation on the light nylon fabric to obtain a pretreated qualified fabric, determining an initial dyeing formula in combination with a target color parameter, and optimizing to obtain an optimized dyeing formula; s2, generating a preliminary operation strategy containing control parameters based on the optimized dyeing formula, and performing dynamic calibration to obtain an optimized operation strategy; s3, optimizing the optimized operation strategy to obtain a target operation strategy so as to control the dyeing equipment to execute dyeing operation, and obtaining qualified dyed fabric. According to the method, by constructing a virtual dyeing platform, simulating a multi-parameter combination scheme and verifying the rationality of parameters in advance, actual trial and error are reduced, all the steps are closely matched, the color uniformity and color fastness of the dyed fabric are effectively improved, the deviation between the dyed fabric and a target color is reduced, the dyeing quality and the finished product percent of pass are remarkably improved, and the production cost is reduced. Meanwhile, the production cost and the resource waste are reduced.

The invention relates to the field of textile machinery, and discloses a high-color-fastness dyeing machine which comprises a storage box, the front side and the rear side of the storage box are fixedly connected with side plates through T-shaped plates, the rear side of one side plate is fixedly connected with a driving mechanism, the right ends of the two T-shaped plates are fixedly connected with a drying mechanism, and the right ends of the two T-shaped plates are fixedly connected with the drying mechanism. The left ends of the two side plates are fixedly connected with guide mechanisms, the far sides of the two T-shaped plates are fixedly connected with adjusting mechanisms, the driving mechanism comprises a protection box, the protection box is fixedly connected to the rear side of one side plate, and the interior of the protection box is fixedly connected with a driving wheel through a driving assembly. According to the cloth cleaning device, two ring bodies are driven to slide and provide driving force for a transmission column, so that the distance between two cleaning rollers can be adjusted, cloth with different thicknesses can be cleaned, and the flexibility of the device is improved.

The invention relates to a high-count double-sided plaid knitted shirt fabric with stable size and a production process thereof, and belongs to the technical field of textile. The spinning mode is compact siro spinning, and the fabric comprises the following components in percentage by weight: 83-88% of cotton and 12-17% of tencel; the jacquard plaid patterns are arranged into four paths from bottom to top; the jacquard weave distribution of the needle cylinder is divided into 54 parts from bottom to top, and the dial triangle is divided into two paths; the production process sequentially comprises the steps of spinning, yarn dyeing, weaving, singeing, water washing, mercerizing, liquid ammonia treatment, water washing and tentering. The fabric is good in shrinkage permeability and good in shape retention; the fabric is compact in texture structure, the dimensional stability and mechanical strength of the fabric are improved, the overall pattern is simple and square, the dimensional stability is good, crease resistance, moisture absorption and breathability are integrated, the pattern is rich, the color fastness is high, and the fabric can resist washing modes such as hand washing and washing machine washing.

The invention discloses a device and a method for testing color fastness to rubbing of a dark cotton corduroy fabric, and belongs to the technical field of fabric detection.The device comprises a chassis, an electric guide rail is arranged on the periphery of the top of the chassis, a material changing mechanism is arranged on the top of the electric guide rail, and lifting bases are symmetrically arranged at the two ends of the chassis; an adjusting cross beam and a control panel are arranged on the lifting base; linkage and mutual matching of a system and a mechanical structure can be formed, feeding abnormity generated in the automatic material changing period of the fabric is avoided, the influence of related factors of material fixing on the color rubbing fastness detection result is reduced, multiple magnetic attraction conversion connection and pneumatic attraction connection between the material changing mechanism and the material clamping friction dynamic detection mechanism can be utilized, and the color rubbing fastness detection efficiency is improved. In combination with a ball joint rolling adjustment dynamic structure, self-adaptive rapid adjustment is performed on the fabric with center deviation or abnormal fixation after feeding, and the overall detection efficiency and accuracy are improved.

The invention relates to the technical field of colored spun yarns, in particular to a full-color-gamut dye liquor color mixing and spray dyeing device and a method for preparing colored spun yarns. The full-color-gamut dye liquor mixing and spray-dyeing device comprises three dye liquor batching tanks which are respectively used for batching red dye liquor, yellow dye liquor and blue dye liquor, the bottom end of each dye liquor batching tank is provided with a first liquor discharge pipe, and each first liquor discharge pipe is provided with a first proportional valve; the upper end of the dye liquor mixing tank is respectively communicated with each first liquid discharge pipe through a pipeline, and the dye liquor mixing tank is used for mixing and preparing dye; the first atomizing nozzle is arranged below the dye liquor mixing tank, is communicated with the dye liquor mixing tank through a pipeline, and is used for atomizing and spraying the mixed dye liquor to the surface of the fiber. The full-color-gamut spray-dyeing colorful spinning fiber life slivers can be obtained, then production of the full-color-gamut colorful spinning yarn is achieved through the drawing procedure, the technological process is shortened, the color matching efficiency is improved, and meanwhile textile fabric made of the yarn has high color fastness.

The utility model relates to the technical field of textile dyeing, and discloses a high-color-fastness yarn dyeing device which comprises a supporting plate, a bottom plate is fixedly connected to the upper surface of the supporting plate, a partition plate is fixedly connected to the upper surface of the bottom plate, a top plate is fixedly connected to the upper surface of the partition plate, and a first motor is arranged on the upper surface of the top plate. According to the high-color-fastness yarn dyeing device, by arranging the containing pipe and the yarn cylinder, dye can flow out of yarn, by arranging the stirrer, the dye can be evenly mixed with the yarn, and the effects that dip dyeing and coloring can be conducted on the yarn from the interior of the yarn, the yarn is evenly colored, and the color fastness of the yarn is improved are achieved; the problems of uneven coloring, low color fastness and the like in the dip dyeing process of common dyeing equipment are solved, and the problems that if the dip dyeing time is prolonged and the dye concentration is increased to improve the dyeing effect, the production cost is increased, and the environment is possibly polluted are solved.

The invention relates to a mildew-proof and odor-resistant textile material produced from conjugated fibers and a preparation method of the mildew-proof and odor-resistant textile material, and belongs to the technical field of textiles. According to the invention, the antibacterial color fixing agent is prepared, the antibacterial color fixing agent is used for carrying out ester exchange modification on PTT to obtain the modified PTT master batch, and then the master batch is used as an'island 'component to prepare the sea-island conjugated fiber, so that the technical defect that a functional auxiliary agent is dissolved in a solvent together with the'sea' component when the sea-island conjugated fiber is prepared is effectively overcome; the sea-island conjugated fiber textile material has good antibacterial performance, still has good retention rate after being washed with water, has good moisture regain and color fastness, is skin-friendly and breathable, and effectively improves the wearing comfort of the PTT-based textile material.

This invention provides an in-situ polymerized yarn and its preparation method, relating to the field of yarn textile technology. The preparation method of this in-situ polymerized yarn includes the following steps: S1. Mixing a polymer, solvent colorant, and complexing agent in a specific ratio to obtain a spinning solution; S2. Simultaneously performing electrospinning, carding, and embedding to obtain a colored nanofiber / cotton composite sliver; S3. Drawing and spinning the sliver to produce yarn. By using colored nanofibers composited with a cotton web, the finishing process is eliminated to reduce contamination. The selection of polydimethyldiallyl ammonium chloride as a complexing agent in the spinning solution increases the volume occupied by the cross-linked structure formed by the complexing agent and dye, enhancing the cohesion with the polymer and improving its color fastness.

The invention relates to the field of recyclable textile fiber dyeing, in particular to a textile fiber stripping cyclic regeneration method based on preset dye dyeing, and provides a preset dye which is an azo structure dye, the azo structure dye molecule contains a group capable of being reduced by a reducing agent, and the preset dye is an azo structure dye. The preset dye for dyeing the recycled textile fibers is used for dyeing cashmere or wool fibers, yarns or fabrics; according to the method, the recycling rate of textile fibers is improved, namely opening, stripping, re-dyeing and textile processing are carried out in the textile and garment processing process or used waste textiles, the selection and design method of the preset dye which is of a specific structure and is used for dyeing the recycling textile fibers is provided, and the quality requirements of color fastness and the like of products are met.

The invention discloses a textile color fastness washing liquor staining degree intelligent rating system, which comprises an equipment main body, a touch screen and a PC terminal, and is characterized in that a washing liquor test vessel is placed in the equipment main body; a touch screen is arranged on the equipment main body, and the equipment main body is also connected with the PC terminal; a light splitting test module is arranged in the equipment main body, and the test module is used for collecting spectral transmittance information of different wavebands of the washed soap liquid and the washed soap liquid, and converting color information through the information; both the touch screen and the PC terminal are provided with conversion rating modules; the conversion rating module is used for calculating a color difference delta E00 and a brightness difference delta L00 according to CIEDE2000, performing data conversion on a gray sample card GB / T251 for evaluating staining, and establishing a mathematical model for staining rating of the washing liquor; and automatically rating the staining degree of the textile color fastness washing liquor by the mathematical model for the staining rating of the washing liquor according to the calculated color difference delta E00 and lightness difference delta L00. According to the invention, the staining degree of the clothing textile color fastness washing liquid can be automatically graded, and the detection is faster and more accurate.

The invention discloses a fabric coloring method and a coated fabric, a magnetron sputtering method is adopted to deposit a color layer on the surface of a to-be-coated fabric, and the color layer comprises variable valence metal oxide; comprising the following steps that S1, a sputtering target material containing variable valence metal elements is taken, and Ar and O2 mixed gas is selected as a deposition atmosphere; s2, taking O2 flow a and Ar flow b when the stable valence metal oxide is deposited; s3, adjusting the flow rate of O2 to be c and the flow rate of Ar to be d, and depositing a color layer on the surface of the to-be-plated fabric; the O2 flow c and the Ar flow d meet the condition that c / (c + d) is more than or equal to 0 and less than or equal to a / (a + b) * 60%, and the unit of the gas flow is sccm. The prepared coated fabric is simple in structure, low in preparation cost and high in color fastness.

The invention discloses a fiber textile fabric color fastness detection device, the fiber textile fabric color fastness detection device comprises a positioning member, the positioning member comprises a fixedly arranged positioning clamp and a movably arranged positioning clamp, and the two positioning clamps are used for clamping an elastic fabric together; and the stretching distance-fixing assembly is matched with the movably arranged positioning clamp to control the initial stretching deformation amount of the elastic fabric. According to the fiber textile fabric color fastness detection device provided by the invention, a complete detection system of fabric clamping, precise stretching, dynamic friction and springback speed control is constructed through collaborative design of the positioning piece, the stretching distance control assembly, the springback speed reduction assembly and the friction driving assembly; a solution is provided for three core pain points of'difficult reproduction of initial deformation ', 'neglect of rebound secondary color migration' and'disjunction of detection scene and reality 'of a traditional device.

The invention discloses a high-color-fastness washable polyethylene fabric and a preparation process thereof in the field of functional polymer materials. The high-color-fastness washable polyethylene fabric is prepared from the following raw materials: polyethylene resin, maleic anhydride-acrylic acid copolymer grafted polyethylene, dopamine-silane composite modified polyethylene, magnesium stearate and an antioxidant. Wherein the maleic anhydride-acrylic acid copolymer grafted polyethylene is prepared by copolymerizing maleic anhydride and acrylic acid and then blending and granulating with polyethylene, and carboxyl and acrylate groups are introduced to enhance the binding force with dye; the dopamine-silane composite modified polyethylene is prepared through polyethylene surface hydroxylation, dopamine self-polymerization modification and silane grafting reaction, and the acting force and hydrophobicity between fibers are doubly improved through a catechol group and an epoxy group. According to the prepared fabric, the color fastness and the washing resistance are remarkably improved, meanwhile, the original characteristics of light weight and chemical corrosion resistance of polyethylene are kept, and the application scene is expanded.

The invention provides a high-color-fastness gambiered canton gauze dyeing method which comprises the following steps: soaking a gambiered canton gauze coarse fabric in a 0.5-1% polycarboxylic acid buffer solution at 40-50 DEG C for 30 minutes, and airing at normal temperature to obtain a silk fabric; heating the rhizoma dioscoreae cirrhosae extracting solution to 80-100 DEG C, adjusting the pH value to 5.5-6.0, putting the silk fabric into the rhizoma dioscoreae cirrhosae extracting solution, and maintaining the temperature for 60 minutes to obtain a dyed fabric; placing the dyed fabric in a 0.5-1% polyphenol chelating solution, heating the dyed fabric to 50-60 DEG C, maintaining the temperature for 20-30 minutes, taking out the dyed fabric, spin-drying the dyed fabric, placing the dyed fabric in a 1-1.5% tea polyphenol solution, heating the dyed fabric to 50-60 DEG C, maintaining the temperature for 20-30 minutes, finally immersing the dyed fabric in a composite mordant dyeing solution, heating the dyed fabric to 40-50 DEG C, and maintaining the temperature for 10 minutes to obtain a pretreated fabric; the pretreated fabric is evenly coated with the reddish brown mud coating slurry, solarization is carried out, cleaning and airing are carried out, and gambiered canton gauze is obtained after shaping. Therefore, the problem that the traditional gambiered canton gauze is easy to fade is effectively solved.