Classifications

• • 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
  • D06M11/73—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 carbon or compounds thereof
  • D06M11/74—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 carbon or compounds thereof with carbon or graphite; with carbides; with graphitic acids or their salts

Definitions

• the present invention relates to a method for obtaining textile materials which cannot be detected by infrared radiation.
• the method according to the invention makes it possible to obtain textiles which, subjected to detection by infrared radiation, either by photography or by electronic detection optical devices, absorb these radiation, which makes them invisible to these methods of detection.
• the process which is the subject of the present invention allows the incorporation of smoke black into any class of textile fibers, whether natural, synthetic or artificial, in any phase of their textile production, namely flock, combed, thread or fabric, regardless of the color, the texture of the weave or the mixture of fibers between them.
• the process is based on obtaining smoke black in dispersion in textile finishing resins, modifying this finishing or not, so that, subsequently, when incorporated into a bath aqueous, the particles of smoke black are kept in the finely dispersed state.
• the smoke black can be deposited, which constitutes a new improvement, on any textile fiber in an aqueous medium, such as that traditionally used in the textile industry for the transformation and finishing of textiles.
• the smoke black is insoluble and, with this process, stable aqueous dispersions are obtained allowing their industrial use. It should also be noted that the black smoke deposited in dust in textiles will not raise the strengths or solidities to the requirements making it possible to satisfy most of the textile standards DIN or ISO, and commonly accepted in the textile field, such as resistance to friction, dry cleaning and washing, and other specifically industrial standards to which textiles are subjected during their fabric development process.
• the resin not only makes it possible to obtain a dispersion of easy industrial use, but also, after drying and polymerization, it performs the function of crosslinking agent which makes the particles adhere to the textiles and covers them in the form of a very thin film, giving them the same strengths or solidities as those presented by the resin, with regard to the specific requirements that textiles must have, which is obtained with one or more textile finishing resins, depending on the type of finish required by the textile, depending on the production phase in question or according to what must ultimately be achieved.
• Another important novelty of the invention is the possibility of practicing deposits of quantities in various percentages on the textile, according to the degrees of immunity to detections. infrared light, without the fabric being substantially altered, neither to the touch nor to the color to an appreciable degree.
• fabrics or textiles are obtained in any state of development, which, subjected to lighting or to the action of light or infrared sources, more particularly in extreme red, is that is to say greater than about 700 nanometers, absorb these radiations without being detected by the means that are usually used for such detection, for example with photographic films for infrared in black and white and color films, the maximum detection is close to around 1200 nanometers, which is equivalent to an awareness zone of between 6500 0 and 8500 A.
• devices that combine optics and electronics to make these rays visible to the simple sight is that is to say greater than about 700 nanometers, absorb these radiations without being detected by the means that are usually used for such detection, for example with photographic films for infrared in black and white and color films, the maximum detection is close to around 1200 nanometers, which is equivalent to an awareness zone of between 6500 0 and 8500 A.
• the process according to the invention is, in general, the following.
• Smoke black is used from a very pure variety of amorphous carbon, a composition comprising 98-99% carbon and 2 to 3% hydrogen. This black smoke is obtained by a suitably regulated combustion with limited quantities of air, fatty oils, tars, petroleum, turpentine, etc., according to what may be suitable according to what exists on the market.
• the powdered smoke black thus obtained is insoluble in an aqueous medium, so that it is difficult to apply it in the textile industry and, to avoid this drawback, the process described below is followed: a paste is formed with a concentrated resin until a homogeneous and stable dispersion is obtained, using for this purpose the dispersants and emulsifiers which the resins contain in a commercial form.
• the resin used for pulping is dissolved in an aqueous solution, by continuous stirring, until it is used as a primer.
• the impregnation of the textile is done by the process of padding and wringing, or by exhaustion, as will be explained in detail below. Then, drying is carried out, at a temperature which must be between 50 and 90 ° C. depending on the textile which is being treated.
• Resins The choice of primer resins to be used as thinners and supports for smoke black will depend on the finish desired, taking into account that the requirements of each case must be satisfied, determined by the various types of textiles or fabrics as appropriate, whether clothing, yarn for work, protective parts, gabardines, etc. After numerous tests, the best results have been obtained with the resins and the concentrations of smoke black which are detailed below.
• Urea-formaldehyde and melamine-formaldehyde resins up to 15 g / l and 0.5 g / 1 NH respectively.
• Polyvinyl chloride resins and acrylic resins up to 25 g / 1 and 0.5 g / 1 NH respectively.
• Polysiloxane resins and other atonic softeners up to 1.5% and 0.3% NH based on the weight of the fiber, by exhaustion at 40 ° C and at a pH of 5.5.
• Chromium salts in isopropyl alcohol up to 50 g / 1 and 0.7 g / 1 NH respectively.
• Zirconium salts and chlorinated paraffins up to 50 g / 1 and 1 g / 1 NH respectively.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Chemical Or Physical Treatment Of Fibers (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
• Treatment Of Fiber Materials (AREA)
• Coloring (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (3)

Family

ID=8488246

Family Applications (1)

Country Status (6)

Cited By (2)

Families Citing this family (5)

Family Cites Families (10)

• 1984
  • 1984-12-03 ES ES538214A patent/ES8600440A1/es not_active Expired
• 1985
  • 1985-11-27 AT AT85870164T patent/ATE54964T1/de not_active IP Right Cessation
  • 1985-11-27 US US06/803,571 patent/US4724163A/en not_active Expired - Fee Related
  • 1985-11-27 EP EP85870164A patent/EP0186644B1/de not_active Expired - Lifetime
  • 1985-11-27 DE DE8585870164T patent/DE3578892D1/de not_active Expired - Lifetime
  • 1985-12-03 JP JP60272362A patent/JPS61138769A/ja active Pending

Also Published As

Similar Documents

Legal Events