WO2020096650A1 - Procédé amélioré de teinture en anneau et matériau produit selon ce procédé - Google Patents

Procédé amélioré de teinture en anneau et matériau produit selon ce procédé Download PDF

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Publication number
WO2020096650A1
WO2020096650A1 PCT/US2019/037985 US2019037985W WO2020096650A1 WO 2020096650 A1 WO2020096650 A1 WO 2020096650A1 US 2019037985 W US2019037985 W US 2019037985W WO 2020096650 A1 WO2020096650 A1 WO 2020096650A1
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WIPO (PCT)
Prior art keywords
dye
cleaned
yarn
area
yam
Prior art date
Application number
PCT/US2019/037985
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English (en)
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Revolaze, LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Revolaze, LLC filed Critical Revolaze, LLC
Priority to EP19881954.2A priority Critical patent/EP3700341A4/fr
Priority to MX2020005702A priority patent/MX2020005702A/es
Priority to CN201980003922.9A priority patent/CN111417310B/zh
Publication of WO2020096650A1 publication Critical patent/WO2020096650A1/fr

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/22—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using vat dyestuffs including indigo
    • D06P1/228—Indigo
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
    • D06P3/58—Material containing hydroxyl groups
    • D06P3/60—Natural or regenerated cellulose
    • D06P3/6025—Natural or regenerated cellulose using vat or sulfur dyes
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/12—Reserving parts of the material before dyeing or printing ; Locally decreasing dye affinity by chemical means
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/13—Fugitive dyeing or stripping dyes
    • D06P5/132—Fugitive dyeing or stripping dyes with oxidants
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/15—Locally discharging the dyes
    • D06P5/153—Locally discharging the dyes with oxidants
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/20—Physical treatments affecting dyeing, e.g. ultrasonic or electric
    • D06P5/2005—Treatments with alpha, beta, gamma or other rays, e.g. stimulated rays

Definitions

  • Denim involves many weaving pattern practices, but the most common is where the warp yams are dyed, and the weft yams are their original color or white.
  • the iconic trait traditional denim possesses is where white warp yarns are immersed in indigo and/or sulfur dye, where the dye does not fully penetrate the yarn diameter. It is named“ring dye” because it is intended to leave a ring of indigo over a white core. This in itself does not necessarily create the iconic look, but rather the exposure to chemicals and/or physical wear (authentic or manufactured) where the indigo or sulfur dye is removed to create a wide array of looks, often resulting in the common “salt and pepper” look of contrasting highs and lows.
  • Figure 1 shows examples of garments that are dyed dark and then
  • the spun warp yams are processed through a series of stages on what is commonly known as a“dye range.”
  • the warp yarns are either treated singularly on a slasher type dye range or more commonly on what is referred to as a rope range.
  • On a rope range individual warp yarns are bunched into groups of approximately 350-400 parallel yams without twist in a grouping.
  • Cotton is a naturally grown fiber that is exposed to contaminants and debris, both organic and inorganic. Along with the naturally contaminants from the growing fields are plant- based cell wall waxes that coat the cotton fibers. These contaminants and waxes act as barriers resisting chemical and dye penetration of the spun yam. Standard practice is thus to thoroughly clean the yarns in the early steps on the dye range.
  • This pre-dye process is generically referred to as scouring.
  • the warp yarns are exposed to what is commonly known as a scour bath in order to remove the natural contaminants and waxes.
  • a scour bath in order to remove the natural contaminants and waxes.
  • Prior art teaches that in order to achieve the desirable dark colors the scour must penetrate the yarn as completely as possible in order remove the waxes and impurities, which then allows the dye to accumulate in deep bands on the yam. This deep yam penetration of the dyes is conventionally thought to be the only way to achieve the dark dyed colors desired. However, in doing so, other problems arise.
  • the dying process is performed in essentially two stages that are repeated as necessary, traditionally 5-12 times.
  • the warp yams of denim are exposed by dipping or immersing into an indigo dye bath that coats the denim.
  • This dye bath involves a high temperature ( ⁇ 60°C) chemical combination largely devoid of oxygen that when paired with caustic NaOH and sodium hydrosulfite (Na2S204) results in normally insoluble indigo becoming soluble (called the“leuco state” in the dye bath vat).
  • the high heat and presence of caustic (50% NaOH) is for the purposes of further indigo penetration into the warp yarns.
  • the yarns again pass through a set of nip rollers to squeeze the excess dye solution from the yams.
  • the denim is“skyed.”“Skying” can be understood to mean that after immersing the yams in the indigo bath they are suspended between a series of rollers and exposed to oxygen for a period of time. This exposure to oxygen“fixes” the dye to the yams as it returns to its insoluble state while coated on the cotton yarns.
  • the amount of time spent in the dye bath, relative to the time spent“skying” is often referred to as an immersion: oxidation ratio.
  • [ 0010 ] dyeing process increases the amount of indigo retained on the yams and consequently darkens the yarns to the desired tones.
  • Each dye addition is commonly referred to as a dip.
  • the yarns are mn through vats of water, traditionally 2-4 vats for rinsing and processed through a set of nip rollers to remove excess moisture and then are passed over heated dmms for drying.
  • the dyed warp yarns are coated (also known as“sized” or“slashed”) in protective materials either on the latter stages of the dye range normally on another separate range before being passed over heated dmms for drying and re-beaming the individual warp yarns.
  • the sizing may consist of rice starch, cornstarch, or potato starch, or a synthetic compound such as polyvinyl alcohol (PVA).
  • the starch provides tensile strength to the warp yams, a smooth surface, and lubrication to reduce the number of yams broken in the weaving process.
  • the size can be applied on a slasher specifically designed for such.
  • Figure 1 shows different kinds of washed denim jeans
  • Figure 2 shows a Schematic of Non-uniform Dye Penetration
  • Figure 3 shows a Schematic of Uniform Dye Penetration
  • Figure 4 shows Denim Abrasion with Potassium Permanganate Treatment
  • Figure 5 shows a typical dyeing treatment process.
  • One embodiment of the disclosed invention begins at the yam stage. Yarns are twisted, with the twist counted as a number of twists per inch. Traditionally lower twist multiple ratios are favored as the lower twist multiple results in lower yarn density, which in turn allows for greater scour and dye penetration into the depths of the yam cores. A common twist multiple factor for traditionally dyed warp yarns may be from 3.0 - 4.5 and weft yarns 4.0-5.0. As disclosed in this invention, the inventors identified the novel value in retaining the white core through the
  • this invention uniquely favors relatively high twist multiple ratios.
  • the increased twist multiple factor increases the density of the yarn, making the waxes and impurities resistant to removal, particularly from the inner core.
  • One embodiment of this invention is the implementation of the favorable, high twist multiple ratios such as warp yam twist multiple ratios from about 4.4 to about 4.6 or higher and 4.9 - 5.1 for weft yams.
  • inventive approach is for thorough, yet minimally invasive scouring but only for the outer yarn surface.
  • This unique concept results, for the first time, in an outer yam perimeter that is scoured while retaining a waxy, dye resistant core.
  • indigo dye can be removed from the outer yam perimeter more easily during dye process abrasion and the initial stone, enzyme, and bleach garment washing process.
  • Another embodiment is a change in the scouring temperature.
  • the scouring in one embodiment, reduces temperatures from the conventional 70° C. to about 30° C or even room temperature,
  • Yet another embodiment of the invention is the reduced concentration of the chemicals used within the scouring stage. Concentration of wetting agents in the scour vat is reduced from the -8 g/L traditionally used to about 2 g/L. Caustic, which
  • Yet another embodiment is to reduce immersion time in the scour vat.
  • the immersion time could be reduced by: 1). skipping rollers, 2). changing the path of rollers, 3). lowering the diameter of the rollers, 4). removing rollers, 5).reducing the collective volume of chemicals relative to the size of the vat or 6). Any other practice that results in reduced immersion time in the scour vats.
  • skipping rollers or changing the path of rollers involve entirely skipping scour boxes.
  • Each of these practices are contrary to the well accepted practices in the conventional ring or rope or indigo dye mill practices.
  • any one of these inventive concepts change the scouring depth and degree and can result in much improved denim garment washing processes. Employment of some or all of these contrary practices have a dramatic effect on the denim garment washing process in terms of sustainability, cost savings, water usage, energy, chemical usage, and washing time.
  • An embodiment of this invention defines a reduction in dwell time and reduction in temperatures between the scouring vat and the rinsing stages. As disclosed above, traditionally yarns are exposed to the scour vat and then passed through a series of heated rollers.
  • a goal is only to scour the outer perimeter of the yarn while retaining the dye resistant waxy core with higher density, this embodiment involves the significant reduction in both dwell time and roller temperatures.
  • the roller temperature may be reduced from ⁇ 70° C to about 30° C. or even room temperature.
  • a further embodiment is to reduce dwell time by the skipping of some of the rollers, reducing the diameter of the rollers, eliminating rollers, or shortening the spans between the rollers involved with dwell time between scour and scour rinsing stages.
  • a reduction in dwell time occurred when the number of rollers used for dwell time at this stage was reduced from 6 to 3 which resulted in the dwell time to be reduced from about 60 seconds to about 30 seconds.
  • Dwell time on rollers refers to the rollers that the yarns pass through from one tank to the next.
  • the warp yarns are exposed to a series of chemicals. Whether scouring, rinsing, dyeing, or sizing, the chemicals are applied through exposure in vats which, to varying degrees, soak the yarns. To remove the excess chemicals, the production involves several nip or squeeze rollers. The yarns are pinched between the nip rollers which creates a wringing and squeezing action, reducing the volume of water, chemicals, or dye on the yarns. Nip rollers squeeze out the scour and dye before the yam enters a new immersion stage, or dwell and oxidation stages.
  • nip pressures were kept relatively low, -4 bar, allowing a relatively high volumes of chemical or dye continue to dwell on the yarns.
  • this invention again goes against the prior art such that another embodiment of this invention is to increase nip pressures to a range of about 5.0 to as high as 7.0 bar throughout the scour, dye, and rinse stages. This increased nip pressure serves the novel effect of reduced
  • Sodium hydrosulfite levels are an embodiment of the disclosed invention as they are maintained in a low, narrower band of 0.8 - 1.2 g/L
  • An additional embodiment is the levels of caustic, which are raised from -5.0 g/L to -5.5 g/L to offset the reduced levels of hydrosulfite where millivolts are slightly higher than traditional, from a range of -680 to -710 to a range of -680 to about 775.
  • Yet another embodiment is the nature of the indigo itself. Traditionally mills dye their goods with pre-reduced 20%-40% leuco indigo paste. Inventors have found surprising results using dye cakes or powdered indigo forms that are not pre- reduced. Inventors have found that this novel chemistry state in the dye box is the most conducive for the complete saturation of the outer perimeter of the yarn, while leaving the waxy impure core much more uniformly shaped and white or natural coloring, which is critical in this invention.
  • Sodium hydrosulfite (or sodium dithionite) is currently a common chemical used as an indigo reducing agent.
  • the levels of sodium hydrosulfite are tailored so as to reduce the openness of the yarns while still successful in putting the indigo into“leuco” reduction state.
  • Yet another embodiment is the implementation of monosaccharides and/or disaccharides as a reduction agent at volumes and concentrations that achieve parallel results with the disclosed vat chemistry with or without intent of replicating disclosed invention.
  • pectin as a reducing agent, when used in a manner that achieves the same goal as that disclosed in the invention regarding reduction agents is another embodiment.
  • Yet another embodiment would invol ve a combination of the disclosed reducing agents, or even the use of yet discovered, realized, or implemented reducing agents when used in such a way that similar results are achieved.
  • Purposeful avoidance of yarn dye penetration beyond the outer perimeter is an embodiment.
  • the outer perimeter could be defined as within 10 35% depth penetration in an embodiment.
  • the reference to lack of penetration into the core means that the dye carries out less penetration into the core. There may still be some dye penetration into the core, but a small enough amount that the dye does not color the core discussion of There is room for a reasonably convincing debate on whether or not the scour penetrates the core, but is simply less effective due to other variables involved.
  • embodiment of this invention is to further lessen the yams exposure to water, and eliminate all but one of the rinse cycles since the lower indigo applied on weight of the warp yams is fully oxidized, pass through the nip rollers before proceeding into the sizing operation.
  • Conventional methods and processing techniques would involve using all rinse tanks available. As such, the reduction of the number of rinse tanks from 4 to 3, 4 to 2, and 3 to 2 or 1 would also qualify as an embodiment of the disclosed invention.
  • Sizing is traditionally a natural starch that is added to the yams via an additional vat immersion that can be on the indigo dye range, but is normally a separate equipment finish range.
  • the addition of starches or polyvinyl alcohols (PVA) to the yams acts to strengthen the warps yarns, act as a lubricant, and smooth the warp yarn surface for the violent weaving process, thus reducing physical stress and breakage.
  • Starches most commonly used include potato starch, rice starch, and corn starch, but synthetic waxes and PVA may be employed completely or to complement the starches.
  • corn starch is the preferred starch because of the elevated viscosity and improved durability of protective coating of this starch. It is for this reason that the implementation of corn starch alone is not novel, but as it is complementary to the process disclosed, it is an embodiment of the invention when other factors are considered, or when being used with other embodiments disclosed within the invention to achieve improved characteristics of dye penetration, retention, and relative whiteness of core.
  • Fabric mercerization involves relatively high concentrations of sodium hydroxide caustic (50% NaOH) ⁇ 300 g/L at -42° Ban me at temperatures as high as 70° C. This high dosage of caustic strips the denim of the previously applied sizing and, depending on application, may provide a luster, as well as added tensile strength to the material. An additional added benefit is that the dye that appears to linger in the core, but is not fasted to the core, appears to be removed, creating a much whiter core.
  • sodium hydroxide caustic 50% NaOH
  • Another mercerization related embodiment involves reducing the
  • Another traditional step in finishing involves skewing or torquing the denim fabric.
  • the fabric is exposed to water that is traditionally 45°- 50° C. and then so as to assure that the weft yams are moved slightly diagonal to the sel vedge edges to compensate for natural cotton movement back towards neutral positioning when washed
  • the novelty of the invention can be improved at this stage as well.
  • One embodiment of the disclosed invention is to reduce the temperature of the water used at the skew/torque range stage.
  • Yet another embodiment of the disclosed invention is to skip the skew/torque stage entirely to forgo exposure to the high temperature water.
  • Sanforization involves the exposure of the denim material to steam or hot (70° or hotter) water before being rolled over a steam heated steel roller while being compressed by a high pressure rubberized roller.
  • the sanforization reduces the warp directional shrinkage experienced in subsequent sewing, industrial wash, wear, or consumer washing.
  • One embodiment of the disclosed invention is to skip sanforization for the sake of furthering the benefits of the disclosed invention by reducing any exposure to water.
  • Another embodiment of the disclosed invention is a dye penetration and fastness that is significantly more uniform. These terms are together purposefully.
  • Dye penetration that is nonuniform is of little concern when the fastness is uniform. Dye located in areas that lack fastness because of a waxy core rinses off very easily and therefore is insignificant. This uniformity can be understood to mean that the dye experiences both similar penetration and oxidized fixation in a shape that follows the outer surface outline of a given warp yam.
  • Figure 3 is an example of yarns with dye penetration and fixing that follows the outside perimeter of the yarn.
  • the wash fastness is uniform. Yams processed from the dye range may have cores that have dye present within them, but exposure to caustic immersion, such as in mercerization, or even regular laundering steps will remove dye that is present, but not fixed within the inner portions of the yam.
  • Sulfur dye vats using the disclosed invention are an embodiment and as they use the same sodium hydrosulfide as a reducing agent the conditions are consistent with those disclosed within the invention.
  • the nip pressures and oxidation times disclosed throughout the invention related to indigo are also applied to sulfur and other dyes.
  • Sulfur dyes may be used after the application of indigo dyes. This is commonly known as sulfur topping.
  • sulfur topping This is commonly known as sulfur topping.
  • the conditions associated with sulfur top applications pertaining to the invention are consistent with those of sulfur bottom or pure indigo dyeing.
  • Potassium permanganate is often used as a localized or global bleaching agent and considered necessary within the fashion industry to counter the excessive dye penetration that the denim industry
  • PP is commonly used. PP is not only dangerous to the laborers that apply it, but it involves additional washing and wastewater treatment steps that result in millions of gallons of water being used annually around the world for this purpose. In addition, the reaction of PP and indigo produces isatin which
  • White core technology lends many benefits to the textile mill through cost savings in the reduction of chemical consumption, energy savings with lower temperatures in scouring and oxidation stages, and does so while improving the aesthetics and quality of the product.
  • PP spray has been known for decades to be a health hazard to the long term lung health of the operators required to spray and handle it.
  • a major benefit of this invention is that when using the laser technology, it can replace potassium permanganate spray (PP spray), which is a very hazardous and industry regulated chemical.
  • PP spray is used to add brightness or whiteness to the abraded area.
  • Laser etching or hand sanding alone cannot achieve the brightness necessary on normal denim fabric.
  • PP spray also requires additional water and strong neutralization chemicals for its removal.
  • embodiment therefore is the improvement of the laser to penetrate the core with the white core technology compared to conventional denim fabric.
  • a critical embodiment is to couple CleanKore with RevoLaze’s LightLaze software, as described in Patent application number 16155203 , filed October 9,
  • This white core technology invention to give optimal laser etching and product performance results. Since LightLaze enhances the laser file, more high and low contrast differences within the file will be visible on this denim compared to normal denim fabric; and the resolution will be subsequently improved. The details and quality of design will improve on this unique fabric, along with increased laser throughput. Filters incorporated into the LightLaze software will replace hand sand touch ups and give much more detailed textures and hand sand looks with the white core fabric compared to normal denim fabric.
  • One embodiment of the invention is an oxidation“skying” range formed of range rollers with dynamic oxidation times. This would involve controlling oxidation times through nonconventional methods, possibly with oxidation rollers that move according to oxidation specification. These oxidation times could be varied through the number of rollers, the distance between the rollers, or similar means.
  • the invention of dynamic oxidation fixation control can allow a mill to have several target shades met through the modification in oxidation time rather than the purging of all dye vats and this is a new embodiment of this invention.
  • the invention of dynamic oxidation times could allow a mill to counter atmospheric conditions, such as temperature, humidity, airflow, dew point etc which can have an impact on the oxidation rate which can have a dramatic impact on the resultant shade. These variables could be accounted for with pre-programmed responses to changes measured by sensors, or modified manually.
  • the invention of dynamic oxidation times could allow a mill to more effectively counter the impact of more or less polluted cotton without having to adjust or purge scouring baths or dye tanks
  • Reduction in mercerization could be attained through reduction in time exposed to chemicals, reduction in chemicals, or reduction in temperature of chemicals.
  • Ring dyeing is typically performed using rope dyeing or slasher dyeing methods.
  • Rope dyeing is described in U.S. Patent No. 7,201,780.
  • Yarn is gathered in “ropes”, typically made of 300 to 400 yarns. These ropes (typically 18 to 48 ropes/machine) are sent through a continuous rope dyeing machine made up of one circulating dye bath separated by a number of boxes as shown in Figure 10. The ropes travel through the dye baths for approximately 15 to 20 seconds submerged, allowing soluble leuco-indigo dye to coat an outer layer of color onto the yarn.
  • This yarn then proceeds into a“skying” segment where the soluble leuco-indigo is oxidized rendering it insoluble, adhering the indigo to the cotton yarns by its exposure to air, to create the oxidized blue indigo.
  • the process repeats with successive dye exposure to continue to build color yield on the perimeter of the yam.
  • Dye penetration depths be also controlled with manipulation of the textile auxiliary chemicals in the bath (e.g., caustic (NaOH) or a reducing agent such as sodium hydrosulfite or a sodium borohydride/bisulfite combination.
  • FIG. 5 shows a diagram of a conventional slasher continuous dyeing machine in which this system can be used and in which oxidation and immersion dye box steps are labeled.
  • yam 100 is held between idlers 105 as it travels along a path.
  • the path causes the yarn to travel through immersion dye boxes such as 110, which is filled with dye. This allows the leuco- indigo dye in the box 110 to paint an outer layer of color onto the yarn.
  • This yarn is held between idlers 111, 112, 112 in the dye box 110, for a time dependent on the speed of the yarn along the path.
  • the yam then proceeds on idlers 115, out of the box 110, into a“skying” or oxidation segment where the yam is held between idlers over the box, and the leuco-indigo is transformed to the oxidized blue indigo with air.
  • the process repeats, by going through another box 130, to another oxidation 140, and continues, to continue to build color yield on the perimeter of the yam.

Abstract

L'invention porte sur un matériau en denim formé d'un matériau de fil de coton formé d'un matériau de section transversale arrondie, le matériau de fil de coton ayant une zone de périmètre extérieur qui est comprise entre 10 et 35% de la profondeur totale de la zone de section transversale arrondie. Le périmètre extérieur a été nettoyé par un processus chimique, et une partie intérieure et le matériau de fil de coton n'est pas nettoyé et a ses cires et impuretés d'origine. Le périmètre extérieur du fil de coton qui est nettoyé est teint avec un colorant. Ce colorant pénètre davantage dans la zone nettoyée, dans une proportion entre 10 et 35% de la profondeur totale de la zone de section transversale arrondie. À l'inverse, le colorant pénètre moins dans la zone intérieure que dans la zone nettoyée, c'est-à-dire que le matériau de fil de coton est tissé avec d'autres matériaux de fil de coton, le matériau de fil ayant une torsion de fil d'environ 4,4 à 4,6 torsions par pouce pour les fils de chaîne et de 4,9 à 5,1 torsions par pouce pour les fils de trame.
PCT/US2019/037985 2018-11-07 2019-06-19 Procédé amélioré de teinture en anneau et matériau produit selon ce procédé WO2020096650A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP19881954.2A EP3700341A4 (fr) 2018-11-07 2019-06-19 Procédé amélioré de teinture en anneau et matériau produit selon ce procédé
MX2020005702A MX2020005702A (es) 2018-11-07 2019-06-19 Proceso mejorado de teñido en forma de anillo y material fabricado a partir del mismo.
CN201980003922.9A CN111417310B (zh) 2018-11-07 2019-06-19 改进的环染方法及其制备的材料

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201862756853P 2018-11-07 2018-11-07
US62/756,853 2018-11-07
US201916371427A 2019-04-01 2019-04-01
US16/371,427 2019-04-01

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CN (1) CN111417310B (fr)
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Cited By (3)

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CN112900118A (zh) * 2021-01-27 2021-06-04 鲁泰纺织股份有限公司 利用活性染料染色方法生产牛仔纱的染色工艺
WO2022086941A1 (fr) * 2020-10-20 2022-04-28 CleanKore, LLC Rame de teinture, processus pour rame de teinture et fils et tissus produits à partir de ceux-ci
WO2022183093A1 (fr) * 2021-02-26 2022-09-01 CleanKore, LLC Plage de colorants soufrés et procédés, et fils et tissus produits à partir de ceux-ci

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CN113969508B (zh) * 2021-11-30 2024-03-22 韶关市北纺智造科技有限公司 纱线的染色方法

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EP3700341A4 (fr) 2021-08-18
MX2020005702A (es) 2022-03-25
CN111417310A (zh) 2020-07-14
EP3700341A1 (fr) 2020-09-02

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