EP4200473A1 - Procédés permettant de contrôler une couleur pendant un processus de métallisation et produits résultants - Google Patents

Procédés permettant de contrôler une couleur pendant un processus de métallisation et produits résultants

Info

Publication number
EP4200473A1
EP4200473A1 EP21862558.0A EP21862558A EP4200473A1 EP 4200473 A1 EP4200473 A1 EP 4200473A1 EP 21862558 A EP21862558 A EP 21862558A EP 4200473 A1 EP4200473 A1 EP 4200473A1
Authority
EP
European Patent Office
Prior art keywords
fabric
dye
metalized
bath
dye bath
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
EP21862558.0A
Other languages
German (de)
English (en)
Inventor
Bennett Fisher
Carl Jones
Jodi WALLIS
Dino Aimino
Thomas DOUGAL
Greg Gianforcaro
David Curry
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Noble Biomaterials Inc
Original Assignee
Noble Biomaterials Inc
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
Priority claimed from US17/161,364 external-priority patent/US11905648B2/en
Priority claimed from US17/400,999 external-priority patent/US20210372044A1/en
Application filed by Noble Biomaterials Inc filed Critical Noble Biomaterials Inc
Publication of EP4200473A1 publication Critical patent/EP4200473A1/fr
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H3/00—Camouflage, i.e. means or methods for concealment or disguise
    • F41H3/02—Flexible, e.g. fabric covers, e.g. screens, nets characterised by their material or structure
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
    • D06M10/04—Physical treatment combined with treatment with chemical compounds or elements
    • D06M10/06—Inorganic compounds or elements
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/83—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with metals; with metal-generating compounds, e.g. metal carbonyls; Reduction of metal compounds on textiles
    • 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
    • D06P1/0036—Dyeing and sizing in one process
    • 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
    • D06P1/0076—Dyeing with mineral dye

Definitions

  • This disclosure is related to the field of metalized fabrics. More particularly, this disclosure is related to controlling color during a metallization process for a metalized fabric. Also described are fabrics made using the same.
  • Metalized fabrics and materials have been used for many years for various purposes.
  • metalized films such as Mylar
  • Metalized fibers have been used to create metalized fabrics.
  • Such fibers have been used to make non-woven fabrics, including metalized felts. These felts may be used to form conductive mats, for example, for use as shielding from electromagnetic interference.
  • Metalized fibers have been used to create metalized yarns. Such yarns may be used to make metalized fabrics.
  • Metalized fibers may take many forms, some being pure metal, similar to a metal wire, and other incorporating other elements, such as plastics, cotton, or other materials. Metalized fibers may be incorporated into fabrics to provide a number of different utilities, including, without limitation, antimicrobial properties, odor-reduction properties, electrical conductance properties, antistatic properties, and other useful properties. For example, metalized fibers, as well as uses of such fibers, are described in U.S. Patent Application Publication No. 2006/0067965, the entirety of which is incorporated herein by reference. Specifically, U.S. Patent Application Publication No.
  • 2006/0067965 describes, amongst many things, garments that may be made using a metalized fabric that has antimicrobial, odor-reducing, and insect-repelling properties.
  • the fabrics may be formed by coating at least some fibers with metallic materials, such as silver, or by impregnating the fibers with metallic materials.
  • the result may be a metalized (at least partially) fabric having the above benefits.
  • a multilayer fabric is used to provide some infrared camouflage.
  • the multilayer fabric includes a base fabric, a thin metallic coating, and a printed layer.
  • the thin metallic coating reflects some infrared light, while the printed layer provides some visible camouflage.
  • this multilayer fabric has some limitations. For example, the multilayer fabric is relatively stiff. Moreover, the material will create an unwanted infrared shadow, which may be detectable by infrared observation.
  • An infrared shadow is the result of the metallic cloth reflecting all of the infrared light from the surroundings of the metallic cloth, which reflections may make the wearer of the metallic cloth appear to be a part of the general surrounding environment between the observer and the wearer.
  • an area behind the wearer is either hotter or colder than the surrounding environment between the observer and the wearer, it may be clear to an observer using infrared sensing equipment that an object is passing in front of that hotter or colder region.
  • the metallic cloth may create a significant contrast between the metallic cloth and the background at the location of the metallic cloth.
  • a further, important limitation for such metallic cloths is that the metalized cloth itself cannot be readily dyed or easily printed on, so the metallic cloths are generally very visibly conspicuous.
  • metallic cloths may be screen printed on, but the screen printing process often makes the metallic cloths overly stiff.
  • the available colors for printing typically must be very dark, due to the relatively dark coloring of the metallic cloth itself.
  • some solutions such as those described in U.S. Patent Application No. 16/025,642, provide an inner layer that is infrared deceptive and an outer layer that is visibly deceptive.
  • a metallic- coated thread may be woven together with a similar but uncoated thread to create a fabric that may dissipate and scatter infrared light.
  • This woven fabric may be more ductile than the other prior infrared camouflages discussed above. Further, this woven fabric may help scatter background infrared light around the material itself, helping to blur any infrared shadow created by the masking of the infrared light emitted by the wearer and the background.
  • this woven fabric has its own limitations.
  • the woven fabric requires the use of metalized thread, and metalized thread may be very expensive and relatively inefficient to produce, at least because the metallization must occur at the thread stage of clothing production and not at the fabric or garment stages. Accordingly, the process of making the final woven material and subsequent garment may be relatively inefficient and expensive.
  • the fabric maker limits to the fabric maker’s ability to dye or print on such metalized fabrics, at least because such techniques poorly adhere to metallic threads.
  • printing on or dying metallic threads typically require the use of darker pigmentation because otherwise the metallic thread will shine though the printing material.
  • Typical metallic fibers have a greyish hue, which may be unacceptable for printing light colors over the metallic fibers. Accordingly, it may not be possible to print lighter colors on a metalized woven fabric, even if the fabric maker or end-user desires a lighter printing scheme.
  • the prior attempts at making metalized fabrics discussed above have limitations.
  • the multilayered materials are typically formed using glues, resins, or other materials that are stiff and unbreathable. Accordingly, the resulting fabrics and garments themselves are typically stiff and unbreathable. Further, the presence of glue, resins, and other materials may reduce the fabric’s ability to mask or scatter infrared light. The stiffness may also create issues when attempting to form garments from the fabric. As a result, such garments are typically limited to ponchos and other garment designs that are not form fitting and do not move with the movements of the garment wearer. Further, these materials typically result in garments that are relatively uncomfortable to wear. For woven materials, such materials have some improved properties, but have other drawbacks. These drawbacks include additional expenses and difficulties in printing and dying the woven material.
  • a method for dying and metalizing fabric comprising: providing a base fabric; providing a dye bath maintained at a first predetermined temperature; providing a washing bath maintained at a second predetermined temperature; dying the base fabric in the dye bath; metalizing at least a portion of the base fabric; washing the base fabric in the washing bath; and drying the base fabric.
  • the first predetermined temperature is about 23°C or greater.
  • the second predetermined temperature is about 70°C or greater.
  • the first predetermined temperature is about 25°C or greater.
  • the first predetermined temperature is in a range of about 30°C to about 40°C.
  • the metallization is performed within the dye bath. [017] In an embodiment of the method, a majority of the base fabric is metalized. [018] In an embodiment of the method, the base fabric is processed into a garment after the drying.
  • the metallization begins before the dying is completed. [020] In an embodiment of the method, the dying begins before the metallization is completed. [021] In an embodiment of the method, the metallization and the dying begin substantially simultaneously.
  • the metalizing at least a portion of the base fabric further includes the use of autocatalysis to coat at least a portion of the fabric with a metal.
  • the metallization uses silver.
  • the method further includes introducing dye and a reducing agent into the dye bath after the base fabric has been introduced into the dye bath; and maintaining the predetermined first temperature of the dye bath after introducing dye and a reducing agent into the dye bath.
  • the maintaining the predetermined first temperature of the dye bath after introducing the dye and the reducing agent into the dye bath comprises tilling the dye bath using a tiller.
  • the introduction of the dye and reducing agent into the dye bath is substantially performed at one time.
  • the introduction of the dye and reducing agent into the dye bath is substantially performed in small increments over time.
  • FIG. 1 depicts a block diagram of a process for controlling color during a metallization process for a metalized fabric in accordance with this application.
  • This disclosure relates to processes for controlling the color of metalized fabrics. Specifically, for some embodiments, this disclosure relates to methods of making metalized fabrics that are lighter in color than prior metalized fabrics. Such fabrics may be printed on or dyed using lighter colors than would be possible when using prior metalized fabrics.
  • this application includes within its scope non-woven materials made to form fabrics that are not woven or knitted, such as felts or fleeces. Accordingly, as would be appreciated by a person of ordinary skill in the art, the teachings herein are applicable to fabrics made by any method known to persons of ordinary skill in the art.
  • fabrics may be metalized to take advantage of properties endowed by the metallization. As discussed above, these properties may include, without limitation, antimicrobial properties, odor-reduction properties, electrical conductance properties, antistatic properties, and other useful properties. Further, the color of the base metalized fabric may be lighter than prior metalized fabrics.
  • a standard setting organization referred to as the Commission Internationale de FEclairage (which is also known as CIE), has developed a means of defining colors into a color space known as the CIELAB color space, or CIE L*a*b* color space.
  • the L* represents levels of lightness ranging from white to black
  • the a* represents color from green to red
  • the b* represents color from blue to yellow.
  • FIG. 1 depicts a block diagram of an embodiment of a method of making a metalized fabric that may have a controlled color. Specifically, FIG. 1 depicts an embodiment of a fabric dying process (100) that includes two principle steps: introducing the fabric to a bath (101) and subsequently washing the fabric (103). In other embodiments, the fabric dying process (100) may include more or less steps.
  • the fabric may be any fabric capable of being dyed.
  • the fabric may include at least some component that is metalized.
  • the entire fabric may be metalized.
  • the fabric may only be partially metalized. However, typically, the fabric will not yet be metalized. In typical cases, the fabric will be metalized during the dying process (100).
  • the fabric will be composed of one or more materials.
  • the fabric may be made from multiple materials that each have a different affinity for metallization.
  • the fabric will be made from fibers of nylon and polyester.
  • the fabric will be made from fibers of nylon, polyester, and spandex.
  • the different materials will be included within the fabric in equal quantities by mass, weight, or length. In other embodiments, the different materials will be included within the fabric in unequal quantities.
  • the materials (which will typically be in the form of a fiber but may be otherwise) used to make the fabric include, without limitation, any materials woven, knitted, bound, bonded, crocheted, knotted, tatted, felted, braided, or otherwise formed. Such materials include fabrics or other materials formed by application of heat or pressure to filaments or other materials. In the embodiments where the fabric has not yet been metalized, more than one material will typically be used with each material having a different affinity for metallization. [037] Once the fabric has been procured, a dye bath may be prepared. In embodiments where the fabric has not yet been metalized before the dying process (100), the dye bath may also serve as a bath for metallization.
  • the fabric may be metalized in a separate bath either before or after the introduction of the fabric into a dye bath (101).
  • a dye bath that is capable of dying the chosen fabric may be used.
  • the dye bath may include dyes and other materials intended to cause the fabric to take on a preferred color.
  • the dyes may be basic, acidic, or otherwise.
  • the dye will typically be selected based on the materials to be dyed and the intended application for the fabric, as would be understood by persons of ordinary skill in the art.
  • a reducing agent may be used to improve the dye’s solubility in water, which improved solubility may improve the ability of the dye to be taken in by the fabric.
  • the dye may subsequently be oxidized to bring the dye back to an insoluble state, wherein the dye may remain with or within the fabric.
  • the oxidation may occur by exposure to air when the fabric is removed from the relevant bath.
  • the dye bath may include materials for metalizing some or all of the fabric. Any metallization process known to persons of ordinary skill in the art may be used. In some embodiments, the metallization process may metalize the entire fabric. Such metallization may range from partial to complete metallization. In some embodiments, some portions of the fabric may be metalized to a greater extent that other portions of the fabric. In some embodiments wherein different portions of the fabric are metalized to different extents, the metallization process may preferentially metalize one constituent material of the fabric over another constituent material. In some such embodiments, the metallization process may use autocatalysis to coat at least portions of the fabric with a metal.
  • the metallization bath may include metal salts and a reducing agent, along with complexing agents, stabilizers, or buffers that may enhance the autocatalytic process or maintain the necessary pH for the process.
  • the metal deposited on or in the fabric may be silver.
  • the metal may be any metal known to persons of ordinary skill in the art.
  • the dye bath and the metallization bath may be the same bath. In such an embodiment, the materials included in the bath will be able to both dye and metalize at least a portion of the fabric.
  • the dye bath and the metallization bath may be separate from each other.
  • the fabric may be introduced into the dye bath before being introduced into the metallization bath, or vice versa. Intermediate steps may be taken between introducing the fabric to each bath.
  • the fabric may be washed between baths.
  • the fabric may be oxidized, heated, dried, or otherwise processed between baths.
  • the bath for dying may be maintained at a specified temperature.
  • the bath temperature will be brought up to an initial starting temperature and subsequently lowered to a process temperature.
  • the process temperature will typically be maintained during the entire time the fabric is introduced into the dye bath (101).
  • Prior dye baths were typically heated to a peak bath temperature of about 70°F (about 21°C). Once the fabric would be added to the prior dye bath, the temperature would typically fall. In prior processes, the temperature would be maintained in some processes and not maintained in others.
  • the initial starting temperature of the dye bath may be in a range of about 23°C or greater. In some embodiments, the initial starting temperature of the dye bath may be in a range of about 25°C or greater. In still other embodiments, the initial starting temperature of the dye bath may be in a range of about 30°C to about 40°C.
  • the dye bath will not be fully prepared when the fabric is introduced into the bath.
  • the dye and reducing agent may be added to the dye bath after the fabric is introduced into the dye bath.
  • the dye and reducing agent were typically added in small amounts over a period of time, such as over about 30 minutes. In the processes disclosed herein, this process of adding the dye and reducing agent may occur more quickly.
  • all of the dye and reducing agent material to be added to the dye bath may be added together at a single time or over a relatively brief amount of time, such as over a time period of less than about a minute, less than about thirty seconds, less than about 10 seconds, or less than about a single second.
  • the effect of adding the reducing agent and the dye to the dye bath will typically be to increase the temperature of the dye bath. This may be due to the exothermic nature of these materials entering a solution with the bath or the exothermic nature of these materials’ interactions with each other and with other constituents of the dye bath.
  • the processes disclosed herein will attempt to maintain a specified temperature, and accordingly, will typically make some efforts to prevent the dye bath from increasing in temperature as the dye and reducing agent are added to the bath.
  • This maintenance of the dye bath temperature may be made by performing any action known to persons of ordinary skill in the art that may effectively reduce the temperature of the heating dye bath or otherwise generally maintain the specified temperature.
  • the dye bath may include a tiller that may assist in maintaining the specified temperature. Without being bound by any particular manner of operation, the tiller may assist in maintaining the specified temperature by mixing the contents of the dye bath, by exposing the constituents of the dye bath to air, or by another means.
  • the washing process (103) may be used to remove and excess material leftover from the fabric’s exposure to the dye bath (101). Such materials to be removed may include excess dye, reduction agents, metal materials, or any other material present in the dye bath.
  • the washing process (103) typically comprises immersing the dyed and metalized fabric in a hot bath of water. Prior washing baths typically were heated to a temperature of about 120°F (about 49°C). In the washing process (103) disclosed herein, the washing bath temperature may be maintained at equal to or greater than about 70°C.
  • the fabric may be further processed.
  • the fabric may be further dried, further dyed, printed upon, scoured, or otherwise processed.
  • the fabric may be packaged or otherwise situated for subsequent processing.
  • the fabric may be packaged for sale or may be processed into a garment or other structured composition including the fabric.
  • Such garments or other structured compositions may be capable of showing visible colors that prior methods of metalizing and dying fabric were not capable of producing.
  • any of the ranges, values, properties, or characteristics given for any single component of the present disclosure can be used interchangeably with any ranges, values, properties, or characteristics given for any of the other components of the disclosure, where compatible, to form an embodiment having defined values for each of the components, as given herein throughout. Further, ranges provided for a genus or a category can also be applied to species within the genus or members of the category unless otherwise noted. [048]
  • the qualifier “generally,” and similar qualifiers as used in the present case, would be understood by one of ordinary skill in the art to accommodate recognizable attempts to conform a device to the qualified term, which may nevertheless fall short of doing so.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Coloring (AREA)

Abstract

La présente invention concerne un système et des procédés qui permettent à un tissu d'être métallisé et coloré pour atteindre des couleurs finales qui étaient auparavant impossibles à obtenir. Les systèmes et les procédés se rapportent à des processus permettant de contrôler la couleur de tissus métallisés. De façon précise, pour certains modes de réalisation, les systèmes et les procédés se rapportent à des procédés de fabrication de tissus métallisés qui présentent une couleur plus claire que celle de précédents tissus métallisés. De tels tissus peuvent être imprimés ou teints à l'aide de couleurs plus claires que celles envisageables lors de l'utilisation de précédents tissus métallisés. Les systèmes et les procédés de l'invention peuvent comprendre des bains de teinture et des bains de lavage qui sont plus chauds que les procédés de l'état de la technique.
EP21862558.0A 2020-08-24 2021-08-24 Procédés permettant de contrôler une couleur pendant un processus de métallisation et produits résultants Pending EP4200473A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US202063069543P 2020-08-24 2020-08-24
US17/161,364 US11905648B2 (en) 2020-01-28 2021-01-28 Metalized fabric that dissipates and scatters infrared light and methods or making and using the same
US17/400,999 US20210372044A1 (en) 2020-01-28 2021-08-12 Methods for controlling color during a metallization process and resulting products
PCT/US2021/047319 WO2022046749A1 (fr) 2020-08-24 2021-08-24 Procédés permettant de contrôler une couleur pendant un processus de métallisation et produits résultants

Publications (1)

Publication Number Publication Date
EP4200473A1 true EP4200473A1 (fr) 2023-06-28

Family

ID=80354025

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21862558.0A Pending EP4200473A1 (fr) 2020-08-24 2021-08-24 Procédés permettant de contrôler une couleur pendant un processus de métallisation et produits résultants

Country Status (2)

Country Link
EP (1) EP4200473A1 (fr)
WO (1) WO2022046749A1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3637130C1 (de) * 1986-10-31 1987-09-17 Deutsche Automobilgesellsch Verfahren zum chemischen Metallisieren von Textilmaterial
KR20050094272A (ko) * 2004-03-22 2005-09-27 박두희 천연 녹차를 주재료로 한 염색방법
JP2007146339A (ja) * 2005-11-29 2007-06-14 Komatsu Seiren Co Ltd 金属光沢布帛およびその製造方法
JP2008223189A (ja) * 2007-03-15 2008-09-25 Kuraray Co Ltd 耐熱性に優れる導電性不織布
KR101233661B1 (ko) * 2010-09-16 2013-02-15 충남대학교산학협력단 산성 또는 배트염료를 이용한 초극세섬유의 염색방법
CN107268214A (zh) * 2017-06-20 2017-10-20 丹阳市斯鲍特体育用品有限公司 一种浸渍法制备导电击剑运动金属衣面料的方法

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