Classifications

• • D—TEXTILES; PAPER
  • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
  • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
  • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
• • 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
  • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
  • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
  • D06M13/12—Aldehydes; Ketones
  • D06M13/133—Halogenated aldehydes; Halogenated ketones ; Halogenated ketenes
• • 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
  • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
  • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
  • D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
  • D06M13/192—Polycarboxylic acids; Anhydrides, halides or salts thereof
• • 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
  • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
  • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
  • D06M13/395—Isocyanates
• • 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
  • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
  • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
  • D06M13/402—Amides imides, sulfamic acids
  • D06M13/432—Urea, thiourea or derivatives thereof, e.g. biurets; Urea-inclusion compounds; Dicyanamides; Carbodiimides; Guanidines, e.g. dicyandiamides
• • 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
  • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
  • D06M2101/16—Synthetic fibres, other than mineral fibres
  • D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
  • D06M2101/34—Polyamides

Definitions

• bulked yarn of thermoplastic high polymers for example polyamides, polyolefins, polyesters or polyacrylonitrile may be prepared by twisting yarn consisting of a plurality of filaments by means of a false-twist machine and setting the twist while the yarn is still hot.
• the yarn coming from the supply package passes for example over a feed roller, then through a treatment zone in which it is subjected to a Wet treatment and/or a heat treatment, then through the twist head of the false-twist machine and finally to a delivery roller.
• the yarn is in a highly twisted condition shortly after leaving the feed roller and is untwisted again immediately after the twist head.
• crimping is effected by drawing the thread over a heated knife edge, by treatment in a stuifer box, or by using a jet of air.
• Crimped yarn or filaments prepared according to this invention have better mechanical properties, for example higher elasticity and a more permanent crimp than those prepared by prior art methods.
• Texturing of the yarns or filaments is carried out by conventional texturing methods. These methods are described for example in the book by Berkeley L. Hathorne on Woven Stretch and Textured Fabrics, Interscience Publishers, New York, and in a work by H. U. Schmidlin Elastische Textilien, SVF-Fachorgan fiir Textilveredlung, 20th year, part 2, February 1965.
• the yarn may be textured by the false-twist method, by drawing the fiber over a knife edge by crimping in a stutter "box, by using a jet of air, by twisting and winding 3,514,248 Patented May 26, 1970 up.
• the false-twist method and the stutter-box method occupy a special position for carrying out the method according to this invention.
• the yarns or bundles of filaments may be treated with crosslinking substances during or after the texturing.
• the yarns or bundles of filaments are advantageously treated by passing them through a solution of dispersion of the crosslinking substance in water. This treatment may be carried out prior to texturing or after texturing. If the treatment of the yarns or bundles of filaments be carried out after texturing, the impregnated yarns 01' bundles of filaments should be heated to elevated temperatures for a short time. The temperature depends on the high polymer used and on the crosslinking substance. Polyamides, such as nylon 66, are advantageously heated for example for 0.5 to 10 seconds at temperatures of from to 190 C. In the case of ethylene glycol terephthalate polyesters the treatment is also carried out at from 120 to 190 C. for the same length of time.
• the crosslinking substances may advantageously be used in solution or emulsion.
• concentration depends on the rate at which the yarn or bundle of filaments is passed through the solution or emulsion and also on ab sorption of water or solution by the high polymer.
• the crosslinking substances are in general used in concentrations of 1 to 30% by weight.
• crosslinking substances are bifunctional or polyfunctional isocyanates, bi-functional or higher than bifunctional carboxylic acids, aliphatic or isocyclic dialkylenediureas, bifunctional or higher than bifunctional halogen compounds, such as chloral or trichloroacetic acid; these substances are soluble in conventional solvents. Solutions in water are particularly preferred.
• thermoplastic high polymers examples include polyamides, such as nylon 6 and nylon 66; and polyesters, such as ethylene glycol terephthalate polyesters.
• a measure of the texturing effect is the crimp rigidity; it is expressed as a percentage and is determined as follows. When a bulked yarn is loaded with a weight of 0.002 g./den., it is extended to a length 1. When loaded with a weight of 0.2 g./den., the extension is to a length L. Crimp rigidity is the value expressed by:
• EXAMPLE 1 A l40-denier nylon 6 yarn having 24 filaments is twisted at a temperatureof C. on a false-twist machine (type KRZ 250 of Friedrich Uhde GmbH, Dortmund) at 4120 rpm. After the yarn has cooled, it is dipped for two seconds in a bath consisting of a 3% solution of 1,6- hexamethylenediethylenurea which is at 25 C. The yarn is then heated for three seconds at C. The crimped yarn has a crimp rigidity of 47.8%.
• EXAMPLE 2 90-denier nylon 66 yarn consisting of 26 filaments is twisted at a temperature of 225 C. on a false-twist ma- X 100 percent chine (as in Example 1) at 31-60 r.p.m. After the yarn has cooled it is treated in each case with a 3% aqueous solution of a crosslinking agent. This is carried out by passing the yarn for thirty seconds through the liquor. The yarns are then heated for three seconds at 200 C. The results are set out in Table 1:
• thermoplastic polymer selected from the group consisting of nylon 6 and nylon 66 by texturizing to provide a permanently textured bulky yarn
• the improvement which comprises: treating said yarn with a solution or dispersion of 4 about 1 to 30% by weight of 1,6-hexamethylenediethy1- enurea as a cross-linking agent; and heating the treated yarn to a temperature of about C. to C. at a point of time not before the texturizing step.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Mechanical Engineering (AREA)
• Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
• Chemical Or Physical Treatment Of Fibers (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=6981485

Family Applications (1)

Country Status (5)

Cited By (1)

Citations (4)

Family Cites Families (4)

• 1965
  • 1965-06-12 DE DEB82390A patent/DE1289240B/de active Pending
• 1966
  • 1966-05-18 CH CH728066D patent/CH728066A4/xx unknown
  • 1966-05-18 CH CH728066A patent/CH498213A/de not_active IP Right Cessation
  • 1966-06-03 NL NL6607766A patent/NL6607766A/xx unknown
  • 1966-06-08 US US556017A patent/US3514248A/en not_active Expired - Lifetime
  • 1966-06-10 GB GB25913/66A patent/GB1145341A/en not_active Expired

Patent Citations (4)

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