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
  • D06M11/58—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 nitrogen or compounds thereof, e.g. with nitrides
  • D06M11/59—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 nitrogen or compounds thereof, e.g. with nitrides with ammonia; with complexes of organic amines with inorganic substances
  • D06M11/61—Liquid ammonia
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
  • D06B7/00—Mercerising, e.g. lustring by mercerising
  • D06B7/08—Mercerising, e.g. lustring by mercerising of fabrics of indefinite length
• • 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
  • D06M2101/02—Natural fibres, other than mineral fibres
  • D06M2101/04—Vegetal fibres
  • D06M2101/06—Vegetal fibres cellulosic

Definitions

• the subject of this invention is a method of treating textile materials of a cellulosic nature.
• One of the best known methods of treating textile materials of a cellulosic nature to increase the strength and improve the lustre is the method known as mercerizing.
• the textile materials are normally treated in solutions of certain caustic alkalies, sometimes with application of a slight degree of tension during the process.
• caustic alkalies There are several disadvantages associated with the performance on any process which uses caustic alkalies, for example, immediately after the treatment the fibre must be washed very thoroughly otherwise it becomes detrimentally affected.
• liquid ammonia to treat textile materials since liquid ammonia does increase the lustre Without detrimentally affecting the material and can be comparatively easily removed from the material.
• the previous proposal for using liquid ammonia required only that the textile material should be immersed in the liquid ammonia for a few minutes, after which it is taken out of the ammonia and the ammonia removed from it.
• the lustre of the material is enhanced by the treatment the strength of the material is little affected.
• a process of treating textile materials of cellulosic nature consists in first treating the material with liquid ammonia, then subjecting the material to an ammonia-removing treatment and at the same time subjecting the material to a stretching action causing an elongation in the material of between 10% and 30% as measured against the length of the material immediately following the ammonia treatment.
• the ammonia may be pure liquid ammonia.
• the ammonia-removing treatment may be a treatment with a hot fluid.
• the hot fluid may be an aqueous fluid such as water or steam.
• the ammoniaremoving treatment may consist in bringing the material into a hot zone, e.g. that provided by a heating device such as a hot plate or an oven.
• the material may be subjected to infra red radiation.
• the ammoniaremoving treatment may consist of generating heat within the material e.g. by the use of a dielectric heating device or an induction heating device operating at high or radio frequency.
• the process according to the invention produces an increase in the tensile strength of the textile material which in the case of sewing thread may be as much as 40% and in some cases considerably higher and also improves the lustre.
• the increase in tensile strength produced by the process according to the invention is far greater than that produced by any previously known process or treatment.
• the subjection of the material to the previously unknown large degree of stretch stated during the ammonia-removing treatment is an essential part of the process according to the invention and produces the quite unexpected result of the large increase in tensile strength. Extensibility of the material is also reduced and this is a desirable feature as it reduces the tendency to puckering in any fabrics sewn with thread treated by the process.
• the degree of extensibility and the percentage increase of strength can be adjusted by altering the stretch applied within the range stated.
• a process of treating cellulosic textile materials comprising contacting the material with liquid ammonia, then removing ammonia from the material and at the same time stretching the material causing an elongation in the material of between 10% and 30% as measured against the length of the material immediately following the ammonia treatment.
• ammonia-removing treatment is a treatment with a hot fluid.
• ammonia-removing treatment consists in bringing the material into a hot zone.
• ammonia-removing treatment consists in subjecting the material to infra red radiation.
• ammonia-removing treatment consists in generating heat within the material.

Landscapes

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

Applications Claiming Priority (1)

Publications (1)

Family

ID=10469531

Family Applications (1)

Country Status (12)

Cited By (8)

Families Citing this family (3)

• 0
  • NL NL136750D patent/NL136750C/xx active
• 1966
  • 1966-12-02 GB GB53960/66A patent/GB1136417A/en not_active Expired
• 1967
  • 1967-11-29 FR FR130149A patent/FR1546099A/fr not_active Expired
  • 1967-11-29 US US686729A patent/US3560140A/en not_active Expired - Lifetime
  • 1967-12-01 BE BE707390D patent/BE707390A/xx not_active IP Right Cessation
  • 1967-12-01 DE DE19671610928 patent/DE1610928A1/de active Granted
  • 1967-12-01 CH CH1693767A patent/CH498235A/fr not_active IP Right Cessation
  • 1967-12-01 CH CH1693767D patent/CH1693767A4/xx unknown
  • 1967-12-01 NO NO00170784A patent/NO127357B/no unknown
  • 1967-12-01 SE SE16566/67A patent/SE358912B/xx unknown
  • 1967-12-01 NL NL6716398A patent/NL6716398A/xx unknown
  • 1967-12-01 ES ES347862A patent/ES347862A1/es not_active Expired
  • 1967-12-01 DK DK605167AA patent/DK121363B/da unknown
  • 1967-12-01 AT AT1090167A patent/AT288311B/de not_active IP Right Cessation

Also Published As

Similar Documents