High-gram-weight plush and preparation method thereof

Abstract

The invention provides high-gram-weight plush and a preparation method thereof. The preparation method comprises the following steps: 1) weaving a blank; (2) rolling; 3) loosening the rolled gray cloth, carding the front side of the gray cloth by a carding machine, and lustring the front side of the gray cloth; (4) setting the gray cloth, namely setting the gray cloth subjected to lustring; 5) dyeing: performing non-in-cylinder dyeing on the shaped fabric; the dyeing comprises padding, drying and color development; wherein padding comprises a longitudinal stroke L1 and a transverse relative displacement L2, and L1 is larger than or equal to 15 m / min and smaller than or equal to 30 m / min, 0 lt; l2 is less than or equal to 12m / min; a padding device is adopted for padding, the padding device comprises at least two pairs of rollers, straight needle cloth is arranged on one pair of rollers, and the cloth is fed along the wool direction; and 6) performing back napping, back carding, front carding, back shearing, polar fleece, finished product shaping and finished product rolling on the dyed fabric to obtain the high-gram-weight plush fabric. The invention solves the problems of poor dyeing permeability, non-uniform dyeing, incapability of dyeing the root of the plush, poor hand feeling and the like when the high-gram-weight plush is subjected to pad dyeing or flash dyeing and other waterless printing and dyeing processes.

Description

Technical Field

[0001] The invention relates to the technical field of plush preparation technology, in particular to high-weight plush and a preparation method thereof. Background Art

[0002] At present, the more mature non-traditional in-cylinder dyeing methods used on velvet fabrics on the market are mainly divided into printing and dyeing. Printing is mainly based on printing, including traditional printing, heat transfer printing, digital printing, etc. Patent CN 114381849 A relates to a method for manufacturing a weft-knitted polyester velvet blanket. The patent mainly includes raw material selection, weaving, pre-adjustment high-speed brushing, pre-adjustment pre-setting, printing (or roller dyeing), drying, color fixation, washing, setting and drying, post-adjustment high-speed brushing, high-temperature rolling, and setting to obtain a weft-knitted polyester velvet blanket. The patent has a simple process and realizes the development and utilization of low-weight blankets. It feels soft, gentle and has a significant breathability effect. Among them, the patent dyes the fabric through printing. However, this method still has the problem of poor permeability and cannot dye the roots of the velvet. In addition, the printing plate making process is complicated and costly. It is suitable for velvet fabrics with specific patterns and no excessive requirements for dyeing permeability.

[0003] As for dyeing, there are mainly tie-dyeing, flash dyeing, hot melt dyeing (pad dyeing), etc. Patent CN 104343021 B involves a tie-dyeing processing method for imitation artificial fur plush fabric, which mainly provides a tie-dyeing process for imitation artificial fur plush fabric. This method is only suitable for local coloring of thick plush, that is, there is no requirement for permeability, and the product is pursued with white roots of the hair. In addition, the tie-dyeing process of this product is complicated, the process is long, the efficiency is low, and the versatility is not strong, and it cannot solve the problem of poor permeability of thick plush.

[0004] Patent CN 114960233 A provides a method for manufacturing water-free polyester fleece, utilizing water-free printing. This method eliminates the need for washing, ensuring the quality of the fleece surface. While maintaining the required quality and feel, the complex and time-consuming washing process is eliminated, thereby reducing costs and improving production efficiency. While this patent reduces costs and increases efficiency, it still falls within the realm of printing, and permeability issues remain for high-weight fleece. Summary of the Invention

[0005] In view of the shortcomings of the prior art described above, the object of the present invention is to provide a high-weight plush and a preparation method thereof, which is used to solve the problems of high-weight plush when using waterless printing and dyeing processes such as pad dyeing or flash dyeing, such as poor dyeing penetration, uneven dyeing, inability to dye the roots of the plush, and poor hand feel.

[0006] The technical solution of the present invention is:

[0007] The present invention provides a method for preparing high-weight plush, which comprises the following steps:

[0008] 1) Weaving: making velvet fabric through warp knitting machine;

[0009] 2) Rolling: Rolling the fleece fabric obtained in step 1) along the weaving direction;

[0010] 3) Loosening, combing, and ironing: The rolled grey fabric from step 2) is loosened, combed from the front side by a carding machine, and ironed from the front side;

[0011] 4) Embryo setting: shaping the fabric after ironing in step 3);

[0012] 5) Dyeing: The fabric formed in step 4) is subjected to non-tank dyeing; the dyeing includes padding and drying; wherein the padding includes a longitudinal stroke L1 and a lateral relative displacement L2, 15m / min≤L1≤30m / min, 0<||L2||≤12m / min, and the padding is performed using a padding device comprising at least two pairs of rollers, one pair of which is provided with a straight needle clothing, and the fabric is fed in the same direction as the pile;

[0013] 6) After dyeing, the fabric is subjected to back brushing, back combing, front combing, back shearing, shaking, final shaping and final rolling to obtain high-weight plush fabric.

[0014] The present invention also provides a high-weight plush prepared by the above method.

[0015] By adopting the above technical solution, the beneficial effects of the present invention are:

[0016] The present invention adjusts the entire production process of high-weight plush, especially the dyeing process, and adopts a non-traditional in-vat dyeing method to solve the problems of poor penetration of thick plush, inability to dye the roots of long plush, uneven dyeing, poor hand feel, etc. While improving the quality, the present invention is more efficient than traditional in-vat dyeing, saves water resources and energy consumption; and has fewer defects and less loss than ordinary pad dyeing, thus saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a flow chart of the preparation process of high-weight plush.

[0018] Figure 2 It is a schematic diagram of the partial structure of the padding device of the present invention. DETAILED DESCRIPTION

[0019] Hereinafter, embodiments of the high-weight plush and the preparation method thereof provided by the present invention will be described in detail.

[0020] The "ranges" disclosed herein are defined in terms of lower and upper limits, where a given range is defined by selecting a lower limit and an upper limit, and the selected lower and upper limits define the boundaries of the particular range. Ranges defined in this manner can be inclusive or exclusive of the end values and can be combined arbitrarily, i.e., any lower limit can be combined with any upper limit to form a range. For example, if ranges of 60 to 120 and 80 to 110 are listed for a particular parameter, it is understood that ranges of 60 to 110 and 80 to 120 are also contemplated. Furthermore, if minimum range values of 1 and 2 are listed, and if maximum range values of 3, 4, and 5 are listed, the following ranges are all contemplated: 1 to 3, 1 to 4, 1 to 5, 2 to 3, 2 to 4, and 2 to 5. In this application, unless otherwise indicated, the numerical range "a to b" is a shorthand representation of any combination of real numbers between a and b, where a and b are both real numbers. For example, a numerical range of "0-5" indicates that all real numbers between "0-5" are listed herein, and "0-5" is simply an abbreviation for these numerical combinations. Furthermore, when a parameter is expressed as an integer ≥ 2, this is equivalent to disclosing that the parameter is, for example, an integer of 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, etc.

[0021] After extensive research, the inventors of this invention have solved the problems of poor dye penetration, uneven dyeing, inability to reach the roots of the plush, and poor hand feel in high-weight plush using waterless printing and dyeing processes such as pad dyeing or flash dyeing. While traditional in-vat dyeing can address the permeability issues of high-weight plush fabrics, these processes suffer from long dyeing times, low efficiency, significant water consumption, and environmental pollution. For other non-traditional in-vat dyeing methods, such as printing and hot-melt dyeing, for lighter plush products under 300gsm, process differences have little impact on the final style, dyeing effect, and hand feel of the plush. However, for high-weight plush exceeding 300gsm, problems arise such as poor dye penetration, inability to reach the roots of long plush, uneven dyeing, poor hand feel, high waste, and numerous defects. The present invention addresses these issues by adjusting the entire high-weight plush production process, particularly the dyeing process, using a non-traditional in-vat dyeing method to address the problems of poor dye penetration, inability to reach the roots of long plush, and uneven dyeing for thick plush. This application was completed on this basis.

[0022]

Preparation method of high-weight plush

[0023] The present invention provides a method for preparing high-weight plush, comprising the following steps:

[0024] 1) Weaving: making velvet fabric through warp knitting machine;

[0025] 2) Rolling: Rolling the fleece fabric obtained in step 1) along the weaving direction;

[0026] 3) Loosening, combing, and ironing: The rolled grey fabric from step 2) is loosened, combed from the front side by a carding machine, and ironed from the front side;

[0027] 4) Embryo setting: shaping the fabric after ironing in step 3);

[0028] 5) Dyeing: The fabric formed in step 4) is subjected to non-tank dyeing; the dyeing includes padding and drying; wherein the padding includes a longitudinal stroke L1 and a lateral relative displacement L2, 15m / min≤L1≤30m / min, 0<||L2||≤12m / min; the padding is performed using a padding device, the padding device comprising at least two pairs of rollers, one pair of rollers being provided with straight needle clothing, and the fabric is fed in the direction of the pile;

[0029] 6) After dyeing, the fabric is subjected to back brushing, back combing, front combing, back shearing, shaking, final shaping and final rolling to obtain high-weight plush fabric.

[0030] In the method for preparing high-weight plush provided by the present invention, step 1) is weaving the base fabric: a velvet base fabric is obtained by a warp knitting machine. Specifically:

[0031] In step 1) of the present invention, the fabric is woven by 5 combs of a warp knitting machine, one comb is used to weave the surface yarn, and the yarn path is at least greater than or equal to twice the length of the surface yarn; the other four combs are used to weave the base yarn, that is, 2 combs are used to fix the surface yarn, and the other 2 combs are used to connect the base yarn into pieces, and the 5 combs are used to weave together to form a three-dimensional non-velvet grey cloth. The three-dimensional non-velvet grey cloth passes through a slitting machine to divide the extension line of the fabric into two, forming a velvet grey cloth with twice the number of non-velvet grey cloths.

[0032] In step 1) of the present invention, the fineness of the surface yarn used for weaving the embryo is less than or equal to 0.6 dpf, preferably 0.3-0.6 dpf.

[0033] In step 1) of the present invention, the cross section of the yarn is one or more of circular, flat, dumbbell, triangular, etc.; preferably flat.

[0034] In step 1) of the present invention, the glossiness of the yarn is semi-gloss and / or fully dull.

[0035] In step 1) of the present invention, the base yarn has a single filament fineness of less than or equal to 3 dpf, preferably 1.0-2.5 dpf.

[0036] In the method for preparing high-weight plush provided by the present invention, step 2) rolling: the plush fabric obtained in step 1) is rolled along the weaving direction. Specifically:

[0037] In step 2) of the present invention, the coiling tension is 0.5N-5N, and can be selected from 0.5N-3N, 3N-5N, 0.5N-1.5N, 1.5N-3N, 3N-4N, 4N-5N, etc.

[0038] In the method for preparing high-weight plush provided by the present invention, step 3) loosening the fabric, combing the hair, and ironing: the rolled grey fabric in step 2) is loosened, combed from the front side by a combing machine, and ironed from the front side. Specifically:

[0039] In step 3) of the present invention, the front combing includes at least one combing pass, and the combing direction is counter-weaving. The combing speed is 8-30 m / min, and can be 8-30 m / min, 8-15 m / min, 15-30 m / min, 8-10 m / min, 10-15 m / min, 15-20 m / min, 20-25 m / min, or 25-30 m / min. The combing tension is 5-20 N, and can be 5-10 N, 10-15 N, 15-20 N, etc.

[0040] In step 3) of the present invention, the front ironing temperature is 180°C-250°C, which can be 180°C-200°C, 200°C-250°C, 200°C-220°C, 220°C-250°C, etc.

[0041] In step 3) of the present invention, the vehicle speed is 18-40 m / min, and can be selected from 18-25 m / min, 25-40 m / min, 18-30 m / min, 30-40 m / min, etc.

[0042] In the method for preparing high-weight plush provided by the present invention, step 4) shaping the grey fabric: shaping the grey fabric after ironing in step 3). Specifically:

[0043] In step 4) of the present invention, the setting temperature is 130-250°C, and can be selected from 130-200°C, 200-250°C, 130-160°C, 160-200°C, 200-220°C, 220-250°C, etc.

[0044] In step 4) of the present invention, the vehicle speed is 15-30 m / min, and can be optionally 15-20 m / min, 20-25 m / min, 25-30 m / min, etc.

[0045] In the method for preparing high-weight plush provided by the present invention, step 5) dyeing: the fabric formed in step 4) is subjected to non-tank dyeing; the dyeing includes padding and drying. Specifically:

[0046] In step 5) of the present invention, the dipping and rolling can be one dipping and one rolling or multiple dipping and multiple rolling. Preferably, one dipping and one rolling is selected for light color, and multiple dipping and multiple rolling is selected for dark or medium color.

[0047] In step 5) of the present invention, the impregnation includes a longitudinal stroke L1 and a lateral relative displacement L2, wherein the longitudinal stroke refers to the distance moved per unit time in the direction of the fabric's advancement, and the lateral relative displacement refers to the relative distance that the fabric or roller is offset in the lateral direction per unit time.

[0048] 15m / min≤L1≤30m / min, optionally, 15m / min≤L1≤20m / min, 20m / min≤L1≤25m / min, 25m / min≤L1≤30m / min, 15m / min≤L1≤18m / min, 18m / min≤L1≤20m / min, 20m / min≤L1≤22m / min, 22m / min≤L1≤25m / min, 25m / min≤L1≤28m / min or 28m / min≤L1≤30m / min, etc.

[0049] 0<||L2||≤12m / min, optionally, 0<||L2||≤5m / min, 0<||L2||≤3m / min, 3<||L2||≤5m / min, 5≤||L2||≤12m / min, preferably 0m / min<||L2||≤5m / min.

[0050] In step 5) of the present invention, the impregnation device contains at least 2 pairs of rollers, one pair of which is provided with straight needle cloths, which are called liquid combing rollers. The cloth is fed in the direction of the wool. The straight needle cloths on the rollers can be inserted into the inside of the plush when in contact with the fabric, combing the plush in the dye solution. The high-weight plush is not easy to clump together in a dye solution with a certain concentration, and the dye solution can be dyed to the roots of the plush in a short time. The straight needle cloths have a certain resilience, and are not easy to damage the fabric or pull the plush when the fabric moves forward, and can better maintain the style of the plush. The other pairs of rollers play the role of transmission and liquid squeezing, which are called transmission and liquid squeezing rollers. The squeezing liquid is maintained at 30%-80%, which can be optionally 30%-50%, 50%-80%, etc. In a specific embodiment, Figure 2 The padding device contains two pairs of rollers. Figure 2 The pair of rollers on the lower left are equipped with straight needle clothing, and the pair of rollers on the upper right are ordinary rollers.

[0051] The present invention achieves enhanced padding performance through the synergistic effect of the longitudinal stroke L1, the lateral relative displacement L2, and the improved padding device (a pair of rollers equipped with straight needle clothing). The longitudinal stroke drives the fabric forward. A greater longitudinal stroke increases the fabric's forward speed, shortening the fabric's dye contact time and hindering dyeing. A smaller longitudinal stroke slows the fabric's forward speed, hindering production efficiency. The formation of lateral relative displacement offers the following advantages: it maintains a uniform dispersion of the dye in the liquid. Furthermore, the lateral relative displacement causes the liquid to flow and form vortices around the fabric. This dynamic movement of the liquid accelerates the collision and contact between liquid molecules and the fabric. The liquid flow brings new liquid to the fabric surface more quickly while simultaneously removing liquid that has already come into contact with the fabric, thereby maintaining a concentration difference between the liquid and the fabric and facilitating faster penetration of the liquid. In contrast, without lateral relative displacement, the liquid remains relatively stationary, relying primarily on molecular diffusion to contact the fabric, resulting in a relatively slow dyeing rate. The presence of lateral relative displacement can enhance capillary action to a certain extent. Capillary action refers to the phenomenon in which liquids rise or penetrate within a tubular object due to surface tension and adhesion. During this side-to-side movement, the interfiber gaps and pores within the fabric are constantly squeezed and expanded, acting like a "pump," allowing the liquid to enter the fabric more quickly through capillary action. Without lateral relative displacement, capillary action is relatively passive, lacking external mechanical forces to enhance the process. Therefore, lateral relative displacement allows the liquid to penetrate the base of the dense pile, facilitating faster dyeing.

[0052] A pair of combing rollers with straight needles are added to the liquid rolling tank. The purpose is to treat thick and dense plush, especially the roots of the plush are more compact and easily entangled. In traditional pad dyeing equipment, the dye is mainly applied through immersion and roller pressing, using the capillary effect. However, the roots of thick plush are often unable to be dyed in a short time due to the limited ability of molecules to climb high. The present invention adds a pair of combing rollers with straight needles, which can further comb the roots of thick plush during liquid immersion, so that the plush is fully opened when it contacts the dye solution. At the same time, the lateral relative displacement is combined to make the dye quickly contact the plush on the fabric in a short time. The movement of the straight needle combing rollers also further enhances the liquid flow and the formation of vortices, allowing the dye solution to penetrate into the roots of the plush better and faster. The mutual cooperation of the lateral relative displacement and the straight needle rollers creates a 1+1>2 effect, so that the fabric can be fully dyed and dyed to the roots in a shorter time, solving the problem of poor permeability of thick plush using traditional pad dyeing.

[0053] In step 5) of the present invention, the dyeing agent includes disperse dyes, penetrants, pH regulators, sodium alginate solution, color fixing agents, softeners, and fiber bulking agents.

[0054] In step 5) of the present invention, the weight ratio of the disperse dye to the dye is 0.1-5%, optionally 0.1-1%, 1-3%, 3-5%, etc. The molecular weight is 300-500, and the particle size of the dye molecule is 50-200 nm.

[0055] In step 5) of the present invention, the disperse dye is selected from one or more of azo, anthraquinone, and heterocyclic types. Azo types include Disperse Orange S-4RL (CI Disperse Orange 30), anthraquinone types include CI Disperse Blue 3, and heterocyclic types include heterocyclic-biscyanoethyl series disperse dyes.

[0056] In step 5) of the present invention, the amount of the penetrant is 1-5 g / L, optionally 1-3 g / L or 3-5 g / L, to help the dye molecules penetrate into the interior of the fiber.

[0057] In step 5) of the present invention, the penetrant is selected from one or more of alkylphenol polyoxyethylene ethers, nonionic penetrants, anionic penetrants, and compound penetrants. Alkylphenol polyoxyethylene ethers include nonylphenol polyoxyethylene ether (NP-n) and octylphenol polyoxyethylene ether (OP-n); nonionic penetrants include fatty alcohol polyoxyethylene ethers (AEO) and alkyl polyglycosides (APG); anionic penetrants include fast penetrant T (sodium di-sec-octyl maleate sulfonate) and pull-open powder BX (sodium dibutylnaphthalene sulfonate); compound penetrants include JFC compound penetrants and penetrants compounded with anionic and nonionic surfactants.

[0058] In step 5) of the present invention, the amount of the pH adjuster is 0.001-10 g / L, and can be selected from 0.001-0.1 g / L, 0.1-1 g / L, 1-5 g / L, 5-10 g / L, etc., to adjust the pH value to 5-6 to ensure uniform dyeing.

[0059] In step 5) of the present invention, the pH adjuster is glacial acetic acid.

[0060] In step 5) of the present invention, the amount of the sodium alginate solution is 1-10 g / L, optionally 1-5 g / L or 1-10 g / L, 5-10 g / L, to improve the dispersion stability of the dye.

[0061] In step 5) of the present invention, the amount of the color fixing agent is 5-20 g / L, and can be optionally 5-10 g / L, 10-15 g / L, or 15-20 g / L, which helps to fix the dye.

[0062] In step 5) of the present invention, the color fixing agent is selected from one or more of metal salts, sulfates, amine compounds, quaternary ammonium salts, and polymer resins. Metal salts include copper sulfate and chromium acetate; sulfates include aluminum sulfate and zinc sulfate; amine compounds include ethylenediamine and polyethylene polyamine; quaternary ammonium salts include octadecyltrimethylammonium chloride and dodecyldimethylbenzyl ammonium chloride (1227); and polymer resins include polyurethane resins and melamine-formaldehyde resins.

[0063] In step 5) of the present invention, the amount of the softener is 5-30 g / L, and can be 5-10 g / L, 10-20 g / L, or 20-30 g / L.

[0064] In step 5) of the present invention, the softener is selected from ternary copolymer silicone softeners, such as DC-8620, ASA-930, and SF-508.

[0065] In step 5) of the present invention, the amount of the fiber bulking agent is 5-20 g / L, and can be 5-10 g / L, 10-20 g / L, 10-15 g / L, or 15-20 g / L, to impart a soft feel to the fabric.

[0066] In step 5) of the present invention, the fiber bulking agent is selected from one or more of o-phenylphenol sodium salt, methylnaphthalene, methyl salicylate, and methyl methacrylate, which promotes the expansion and swelling of the polyester fiber during the four oven processes of pre-baking, steaming, and setting baking.

[0067] In step 5) of the present invention, after padding and dyeing, the dye is conveyed to a setting machine for drying and coloring, wherein the temperature of the setting machine is sequentially set to 130°C-150°C-190°C-190°C-150°C-130°C.

[0068] In the preparation method of high-weight plush provided by the present invention, in step 6), the dyed fabric is subjected to back napping, back combing, front combing, back shearing, polarizing, final shaping, and final rolling to obtain high-weight plush fabric.

[0069] In step 6) of the present invention, the back napping is performed by at least four napping machines and one combing machine, and the four napping machines and the one combing machine are connected in series to ensure stable operation and improve efficiency.

[0070] In step 6) of the present invention, the backside roughening parameters are: the clockwise speed is 25m / min-50m / min, and can be 25m / min-40m / min, 40m / min-50m / min, etc. The counterclockwise speed is 15-50m / min, and can be 15-30m / min, 30-50m / min, 15-25m / min, 25-30m / min, 30-40m / min, 40-50m / min, etc. The fabric speed is 15-30m / min, and can be 15-20m / min, 20-30m / min, 20-25m / min, 25-30m / min, etc.

[0071] In step 6) of the present invention, the front combing process: the cloth speed is 8-30 m / min, which can be 8-20 m / min, 20-30 m / min, 8-15 m / min, 15-20 m / min, 20-30 m / min, etc. The tension is 5-20 N, which can be 5-10 N, 10-15 N, 15-20 N, etc.

[0072] In step 6) of the present invention, the back shearing speed is 15-30 Hz, which can be 15-20 Hz, 20-25 Hz or 25-30 Hz, etc. The shearing tension is 0.5-3N, which can be 0.5-2N, 2-3N, 0.5-1.5N, 1.5-3N, etc.

[0073] In step 6) of the present invention, the temperature for setting the finished product is 100-170°C, which can be 100-130°C, 130-170°C, 100-120°C, 120-150°C, 150-170°C, etc. The machine speed is 15 m / min-40 m / min, which can be 15 m / min-20 m / min, 20 m / min-30 m / min, or 30 m / min-40 m / min, etc.

[0074] In step 6) of the present invention, the finished product rolling tension is controlled to be 0.5N-5N, which can be selected from 0.5N-3N, 3N-5N, 0.5N-1.5N, 1.5N-3N, 3N-4N, 4N-5N, etc.

[0075] In summary, the present invention adjusts the process of the entire production process of high-weight plush, especially the dyeing process, and adopts a non-traditional in-vat dyeing method to solve the problems of poor penetration of thick plush, inability to dye the roots of long plush, uneven dyeing, poor hand feel, etc., while improving the quality. It is more efficient than traditional in-vat dyeing, saves water resources and energy consumption; has fewer defects and less loss than ordinary pad dyeing, and saves costs.

[0076] The beneficial effects of the present invention are further illustrated below with reference to the examples.

[0077] In order to make the invention objectives, technical solutions and beneficial technical effects of the present invention clearer, the present invention is further described in detail below with reference to the examples. However, it should be understood that the examples of the present invention are only for the purpose of explaining the present invention and are not intended to limit the present invention, and the examples of the present invention are not limited to the examples given in the specification. In the examples, where no specific experimental conditions or operating conditions are specified, the products were prepared under conventional conditions or under the conditions recommended by the material supplier.

[0078] Furthermore, it should be understood that the one or more method steps mentioned in the present invention do not exclude the presence of other method steps before or after the combination step, or the insertion of other method steps between these explicitly mentioned steps, unless otherwise specified. It should also be understood that the combination connection relationship between one or more devices / apparatuses mentioned in the present invention does not exclude the presence of other devices / apparatuses before or after the combination device / apparatus, or the insertion of other devices / apparatuses between two explicitly mentioned devices / apparatuses, unless otherwise specified. Furthermore, unless otherwise specified, the numbering of each method step is merely a convenient tool for identifying each method step, and is not intended to limit the order of arrangement of each method step or to define the scope of the present invention. Changes or adjustments to their relative relationships, without substantially changing the technical content, should also be considered within the scope of the present invention.

[0079] In the following examples, unless otherwise specified, various raw materials of the present invention can be purchased commercially or prepared according to conventional methods in the art.

[0080] Example 1

[0081] Fabric:

[0082] ① Yarn: Surface yarn 150D-288f-DTY semi-gloss flat yarn; bottom yarn 75D-72f-FDY round hole matte yarn;

[0083] ②Weaving: The face yarn and the base yarn are respectively warped into 5 groups of 21-inch warps by a high-speed warping machine, and then knitted by a 22-needle tricot warp knitting machine. The fabric structure is GB1: (5-5-5-5 / 0-0-0-0 / 4-4-4-4 / 0-0-0-0) GB2: (0-1-1-1 / 1-0-0-0) GB3: 1-0-1-0 / 0-1-0-1 / / ) GB4: (0-1-1-1 / 1-0-0-0) GB5: (5-5-5-5 / 0-0-0-0 / 4-4-4-4 / 0-0-0-0)

[0084] ③ The woven three-dimensional non-fleece fabric is slit on a warp knitting slitting machine to obtain a velvet fabric with a hair length of 7.5 mm, a width of 2.5 m, and a gram weight of 480 gsm;

[0085] ④ Roll the prepared grey fabric along the weaving direction with a rolling tension of 1.5N;

[0086] ⑤ Loosen the rolled grey fabric and stack it in the fabric transport vehicle. Connect the fabric ends to the fabric ends being combed on the carding machine for combing. The speed of the carding machine is 20m / min and the tension is 10N. The combed fabric is then passed through the ironing machine at a temperature of 190℃.

[0087] ⑥ The ironed fabric is shaped by the setting machine. The temperature inside the middle section of the setting machine is 195℃ and the machine speed is 30m / min.

[0088] ⑦ After being shaped, the fabric is sent to the pad dyeing machine for dyeing to a deep black color. The dye formula is:

[0089] Disperse Black ECT 300%: 30g / L, Disperse Blue 2BLN: 3g / L, Disperse Red 3B: 1g / L, Disperse Yellow RGFL: 0.5g / L, Manufacturer: Huntsman

[0090] Penetrant: Rapid penetrant T (sodium di-sec-octyl maleate sulfonate), usage: 3g / L, manufacturer: Shandong Yousuo Chemical Technology Co., Ltd., helps dye molecules penetrate into the fiber.

[0091] pH adjuster: glacial acetic acid 0.5-2g / L, manufacturer: Jiangsu Suopu Chemical Co., Ltd., used to adjust the pH value to 5-6 to ensure uniform dyeing.

[0092] Sodium alginate solution: 5% sodium alginate solution 1-2g / L, manufacturer: Qingdao Mingyue Seaweed Group, improves the dispersion stability of the dye.

[0093] Color fixing agent: polyurethane color fixing agent 15 g / L, Shanghai Hete Industrial Co., Ltd. This color fixing agent can form a protective film on the fiber surface, effectively improving the color fastness of dyed fabrics.

[0094] Softener: Amino-modified polysiloxane softener DC-8620 25 g / L, manufacturer: Dow Corning, can give polyester fabrics a soft and smooth feel while improving the fabric's wrinkle resistance.

[0095] Fiber bulking agent: dimethylnaphthalene, dosage 5g / L, manufacturer: Lanxess, Germany. Dimethylnaphthalene can make polyester fibers expand appropriately during the dyeing process, which is beneficial to the adsorption and diffusion of dyes.

[0096] The pad dyeing machine is set to 3 dips and 3 pads, with a longitudinal stroke of 15m / min and a lateral displacement of 3m / min; a pair of liquid combing rollers and a pair of conveying and liquid squeezing rollers are provided in the padding tank.

[0097] After padding and dyeing, the fabric is conveyed to a setting machine for drying and color development. The temperature of the setting machine is set to 130℃-150℃-190℃-190℃-150℃-130℃ in sequence.

[0098] ⑧ After the color is developed, the fabric is pulled, combed and sheared. The reverse side is pulled 3 times, the front side is combed once, the back side is combed once, the front side is sheared once, and the back side is sheared once;

[0099] ⑨ The sheared fabric is subjected to a polarizing process, and the polarizing process parameters are:

[0100] ⑩ After shaking, the finished product is shaped at a temperature of 130°C and a machine speed of 22m / min. After shaping, the fabric is packaged into rolls with a rolling pressure of 2N.

[0101] Example 2

[0102] Compared with Example 1, in step 7 of Example 2, the longitudinal stroke is set to 30 m / min, and the remaining steps are consistent with Example 1.

[0103] Example 3

[0104] Compared with Example 1, in step 7 of Example 3, the lateral relative displacement is set to 1 m / min, and the remaining steps are consistent with Example 1.

[0105] Example 4

[0106] Compared with Example 1, in step 7 of Example 4, the lateral relative displacement is set to 12 m / min, and the remaining steps are consistent with Example 1.

[0107] Comparative Example 1

[0108] Compared with Example 1, in step ⑦ of Comparative Example 1, the liquid combing roller is not provided, and the remaining steps are consistent with Example 1.

[0109] Comparative Example 2

[0110] Compared with Example 1, in step ⑦ of Comparative Example 2, the lateral displacement is: 0 m / min, and the remaining steps are consistent with Example 1.

[0111] Comparative Example 3

[0112] Compared with Example 1, in step ⑦ of Comparative Example 2, the lateral displacement is: 0 m / min, no liquid combing roller is set, and the remaining steps are consistent with Example 1.

[0113] Comparative Example 4

[0114] Compared with Example 1, in step 7 of Comparative Example 4, the lateral relative displacement is set to 20 m / min, and the remaining steps are consistent with Example 1.

[0115] Comparative Example 5

[0116] Compared with Example 1, in step 7 of Comparative Example 5, the longitudinal stroke is set to 10 m / min, and the remaining steps are consistent with Example 1.

[0117] Comparative Example 6

[0118] Compared with Example 1, in step 7 of Comparative Example 6, the longitudinal stroke is set to 35 m / min, and the remaining steps are consistent with Example 1.

[0119] The present invention relates to methods for evaluating some parameters:

[0120] ① Uneven dyeing defects: Randomly take 100 meters of fabric and visually judge whether there are defects such as staining, no dyeing, uneven dyeing, etc., and record the number of defects.

[0121] ② Dye penetration: Randomly select 100 noodle strands and measure the length from the top to the bottom as the hair height. Measure the length of the continuously colored fibers from the top to the bottom, which is called the dye depth. Calculate the sum of the hair height and the sum of the dye depth for each of the 100 strands. Dye penetration (%) = sum of dye depth / sum of hair height.

[0122] ③ Color fastness to washing: tested according to GB / T 3921 standard.

[0123] Table 1

[0124]

[0125]

[0126] As shown in Table 1, compared with Example 1, the longitudinal stroke of Comparative Example 5 is reduced during dyeing. Although the dyeing effect is the same as that of Example 1, the production efficiency is low, which affects the normal production process. Compared with Example 1, the longitudinal stroke of Example 2 is increased to 30 m / min during dyeing, and the dyeing effect is good, which is slightly worse than that of Example 1. Compared with Example 1, the longitudinal stroke of Comparative Example 6 is increased to 35 m / min during dyeing, and the dyeing effect is not as good as that of Example 1. Compared with Example 1, the lateral relative displacement of Example 3 is reduced to 1 during dyeing, and the dyeing effect is good, which is slightly worse than that of Example 1. Compared with Example 1, Example 4 is When the lateral relative displacement is increased to 12 m / min, the dyeing effect is good, which is slightly worse than that of Example 1; compared with Example 1, in Comparative Example 4, the lateral relative displacement is increased to 20 m / min during dyeing, and the dyeing effect is not as good as that of Example 1; compared with Example 1, in Comparative Example 1, the combing roller in the liquid is removed during dyeing, and the dyeing effect is not as good as that of Example 1; compared with Example 1, in Comparative Example 2, the lateral relative displacement is reduced to 0 during dyeing, and the dyeing effect is not as good as that of Example 1; compared with Example 1, in Comparative Example 3, the lateral relative displacement is reduced to 0 and the combing roller in the liquid is removed during dyeing, and the dyeing effect is not as good as that of Example 1.

[0127] In summary, the present invention effectively overcomes various shortcomings of the prior art and has high industrial utilization value.

[0128] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form or substance. It should be pointed out that ordinary technicians in this technical field can make several improvements and supplements without departing from the method of the present invention. These improvements and supplements should also be regarded as the scope of protection of the present invention. Any equivalent changes, modifications and evolutions made by technicians familiar with this profession without departing from the spirit and scope of the present invention by using the technical content disclosed above are all equivalent embodiments of the present invention; at the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A method for preparing high-weight plush, characterized in that: The steps include: 1) Weaving: making velvet fabric through warp knitting machine; 2) Rolling: Rolling the fleece fabric obtained in step 1) along the weaving direction; 3) Loosening, combing, and ironing: The rolled grey fabric from step 2) is loosened, combed from the front side by a carding machine, and ironed from the front side; 4) Embryo setting: shaping the fabric after ironing in step 3); 5) Dyeing: The fabric formed in step 4) is subjected to non-tank dyeing; the dyeing includes padding and drying; wherein the padding includes a longitudinal stroke L1 and a lateral relative displacement L2, 15m / min≤L1≤30m / min, 0<||L2||≤12m / min; the padding is performed using a padding device, the padding device comprising at least two pairs of rollers, one pair of rollers being provided with straight needle clothing, and the fabric is fed in the direction of the pile; 6) After dyeing, the fabric is subjected to back brushing, back combing, front combing, back shearing, shaking, final shaping and final rolling to obtain high-weight plush fabric.

2. The method for preparing high-weight plush according to claim 1, wherein: In step 1), the fabric is woven by a warp knitting machine with 5 combs, one comb is used to weave the surface yarn, and the yarn path is at least greater than or equal to twice the length of the surface yarn; the other four combs are used to weave the bottom yarn, that is, 2 combs are used to fix the surface yarn, and the other 2 combs are used to connect the bottom yarn into pieces. The 5 combs are used to weave together to form a three-dimensional non-velvet grey cloth. The three-dimensional non-velvet grey cloth passes through a slitting machine to divide the extension line of the fabric into two, forming a velvet grey cloth with twice the number of non-velvet grey cloths.

3. The method for preparing high-weight plush according to claim 2, wherein: Also includes any one or more of the following features: A1) In step 1), the surface yarn used for weaving the base has a single filament fineness of less than or equal to 0.6 dpf; A2) In step 1), the cross section of the yarn is one or more of a circular shape, a flat shape, a dumbbell shape, a triangular shape, etc.; preferably a flat shape; A3) in step 1), the glossiness of the yarn is semi-gloss and / or matte; A4) In step 1), the base yarn has a single filament fineness of less than or equal to 3 dpf.

4. The method for preparing high-weight plush according to claim 1, wherein: Also includes any one or more of the following features: B1) In step 2), the coiling tension is 0.5N-5N; B2) In step 3), the front combing includes at least one combing pass, and the combing direction is counter to the weaving direction; the combing speed is 8-30 m / min; and the combing tension is 5-20 N; B3) In step 3), the front side ironing temperature is 180°C-250°C; B4) In step 3), the vehicle speed is 18-40 m / min.

5. The method for preparing high-weight plush according to claim 1, wherein: In step 4), the setting temperature is 130-250° C. and the vehicle speed is 15-30 m / min.

6. The method for preparing high-weight plush according to claim 1, wherein: In step 5), the dyeing agent includes disperse dyes, penetrants, pH regulators, sodium alginate solution, color fixing agents, softeners, and fiber bulking agents.

7. The method for preparing high-weight plush according to claim 6, wherein: Also includes any one or more of the following features: C1) the disperse dye accounts for 0.1-5% by weight of the dye; C2) the disperse dye is selected from one or more of azo type, anthraquinone type and heterocyclic type; C3) the amount of the penetrant is 1 to 5 g / L; C4) the penetrant is selected from one or more of alkylphenol polyoxyethylene ether, nonionic penetrant, anionic penetrant, and composite penetrant; C5) the pH regulator is used in an amount of 0.001-10 g / L; C6) the pH adjusting agent is glacial acetic acid; C7) the amount of the sodium alginate solution is 1-10 g / L; C8) the amount of the fixing agent is 5-20 g / L; C9) the fixing agent is selected from one or more of metal salts, sulfates, amine compounds, quaternary ammonium salts, and polymer resins; C10) the softening agent is used in an amount of 5-30 g / L; C11) the softener is selected from a ternary copolymer silicone softener; C12) the fiber bulking agent is used in an amount of 5-20 g / L; C13) The fiber bulking agent is selected from one or more of o-phenylphenol sodium salt, methylnaphthalene, methyl salicylate, and methyl methacrylate.

8. The method for preparing high-weight plush according to claim 1, wherein: Also includes any one or more of the following features: D1) In step 5), the dipping and rolling can be one dipping and one rolling or multiple dipping and multiple rolling. Preferably, light color is one dipping and one rolling; dark or medium color is multiple dipping and multiple rolling; D2) in step 5), the lateral relative displacement 0 m / min<||L2||≤5 m / min; D3) In step 5), the other rollers are used for transmission and squeezing, and the squeezing is maintained at 30%-80%; D4) In step 5), after pad dyeing, the dyed product is conveyed to a setting machine for drying and color development, wherein the temperature of the setting machine is sequentially set to 130°C-150°C-190°C-190°C-150°C-130°C.

9. The method for preparing high-weight plush according to claim 1, wherein: Also includes any one or more of the following features: E1) In step 6), the back napping is performed by at least four napping machines and one combing machine, and the four napping machines and the one combing machine are connected in series; E2) In step 6), the backside napping parameters are: clockwise speed of 25m / min-50m / min, counterclockwise speed of 15-50m / min, and cloth speed of 15-30m / min; E3) In step 6), the front combing process: the cloth speed is 8-30 m / min, and the tension is 5-20 N; E4) In step 6), the back side shearing is performed at a rotation speed of 15-30 Hz and a shearing tension of 0.5-3 N; E5) In step 6), the temperature for shaping the finished product is 100-170° C., and the machine speed is 15 m / min-40 m / min; E6) In step 6), the winding tension of the finished product is controlled to be 0.5N-5N.

10. A high-weight plush, characterized in that: The product is prepared by the preparation method according to any one of claims 1 to 9.

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