Classifications

• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
  • D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
• • A—HUMAN NECESSITIES
  • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
  • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
  • A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
  • A01N59/26—Phosphorus; Compounds thereof
• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
  • D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
  • D01F2/24—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from cellulose derivatives
  • D01F2/28—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from cellulose derivatives from organic cellulose esters or ethers, e.g. cellulose acetate
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
  • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
  • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
  • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
  • D04H1/425—Cellulose series
• • D—TEXTILES; PAPER
  • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B2401/00—Physical properties
  • D10B2401/13—Physical properties anti-allergenic or anti-bacterial

Definitions

• the present invention relates to a cellulose fibre with a reduced biodegradation rate as well as a reduced susceptibility to moulds.
• EP-A 0 728 855 describes the manufacture of fibres of various origins, among other things, cellulose fibres having deodorizing properties. Thereby, photocatalysts, in particular titanium oxide (TiO 2 ), are used. In addition, an adsorbent in the form of a phosphate of a tetravalent metal and of a hydroxide of a divalent metal is used.
• a metallic component f.i. silver, copper or zinc
• chitosan in order to give deodorizing and/or fungicidal properties or bacteriostatic properties, respectively, to cellulosic regenerated fibres is also known, for example, from U.S. Pat. No. 5,320,903 or from PCT-WO 94/09192.
• a disadvantage of additives or finishings consists in the possible toxicological and also ecological effects, for example by allergic reactions or also due to the release into the environment when washing the products produced therefrom.
• the present invention provides a cellulose fibre which is characterized by a biodegradation rate of less than 60% after 20 weeks (measured in accordance with the soil-burying test described below).
• the cellulose fibre according to the invention has a biodegradation rate of less than 40%, particularly preferably of less than 30%, after 20 weeks.
• the present invention provides a cellulose fibre which is characterized in that the note for the susceptibility to Eurotium rubrum amounts to less than 2 after 4 weeks (measured according to the test described below, mean value from three measurements) at an air humidity of 85%. Particularly preferably, the note for the susceptibility to Eurotium rubrum amounts to 1 or less after 4 weeks at an air humidity of 85%.
• the cellulose fibre according to the invention exhibits both the above-indicated degradation rate and the above-indicated note for the susceptibility to Eurotium rubrum.
• the cellulose fibre according to the invention is preferably characterized in that it is a fibre of the Lyocell type.
• the cellulose fibre according to the invention is preferably characterized in that it is basically free from antimicrobial substances. “Basically free” means that the fibre does not contain any additional antimicrobial agents apart from substances which are contained in the fibre as a result of the normal conditions of the respective manufacturing process and which possibly also display an antimicrobial activity.
• cellulose In solvent-spinning processes, the cellulose is dissolved directly in an organic solvent without the formation of a derivative and the solution is spun. Such fibres are also referred to as “solvent-spun” or “Lyocell” fibres. “Lyocell” is the generic name allocated by BISFA (The International Bureau for the Standardization of man made fibers) for cellulose fibres which are produced by dissolving cellulose in an organic solvent without the formation of a derivative and extruding fibres from said solution by means of a dry-wet spinning process or a melt-blown process. An organic solvent is thereby understood to be a mixture of an organic chemical and water. At present, N-methyl-morpholine-N-oxide is used as an organic solvent on a commercial scale.
• the solution of the cellulose is usually extruded by means of a forming tool, whereby it is moulded. Via an air gap, the moulded solution gets into a precipitation bath, where the moulded body is obtained by precipitating the solution. The moulded body is washed and optionally dried after further treatment steps.
• a process for the production of Lyocell fibres is described, for instance, in U.S. Pat. No. 4,246,221. Lyocell fibres are distinguished by a high tensile strength, a high wet-modulus and a high loop strength.
• the present invention also relates to the use of the cellulose fibre according to the invention for the manufacture of yams, fabrics, knitted fabrics, nonwovens and other textile articles.
• the invention relates to the use of the fibre according to the invention as a component of home textiles such as, for example, blankets, pillows, furniture, mattresses, towels, bed linen, in particular as a filling fibre in blankets, pillows, mattresses and furniture.
• the present invention relates to a textile article, for instance a home textile, which contains the cellulose fibre according to the invention.
• the textile article according to the invention contains an amount of cellulosic material of at least 10% by weight.
• said amount refers to the textile components (cover etc.) of the piece of furniture.
• the cellulosic material in the textile article contains the cellulose fibre according to the invention by 30 to 100% by weight.
• Textile articles containing the cellulose fibre according to the invention are particularly suitable as bioactive products.
• bioactive is understood to be the delay or prevention, respectively, of the growth of microorganisms.
• textile articles according to the invention are particularly suitable also as anti-mite products.
• Lyocell fibres were compared with cotton (BW) and viscose fibres (CV) in a soil-burying test. In comparison with other cellulose fibres such as BW and CV, Lyocell fibres show a clearly delayed degradation behaviour or bioactivity, respectively.
• the samples are buried in a container (flower box approx. 100 ⁇ 20 ⁇ 15 cm) centrally in horticultural soil (Spezial Humus, Messrs. Kleinhoff GmbH 4030 Linz) and are set up in the dark at room temperature (20-25° C.).
• the soil is kept moist by irrigation with tap water.
• the samples are dug out, dried and weighed. Throughout the observation period, the degradation factor is determined by weight detection as well as optically.
• the Lyocell fibre indicated by “SI” is a Lyocell fibre furnished with silicone.
• viscose fibre having a titre of 6.7 dtex is compared to the Lyocell fibres also having a titre of 6.7 dtex, a difference in the degradation rate of 40-50% will appear after 20 weeks.
• the test is performed according to rule CEN/TC 248/WG13/Doc N 142-Method A2, wherein the growth of the mould fungus “ Eurotium rubrum ” is observed at room temperature and at an air humidity of 75, 85 and 100%.
• the humidity in the moist chamber was adjusted by NaCl for 75% KCl for 85% and water for >95%.
• Eurotium rubrum EMPA 633 was generally used as the fungus, the spore density of the inoculation amounted to 10 6 per ml.
• the fungal growth at the samples is evaluated by means of the following diagram: Growth rate (note) Assessment 0 No growth visible under the microscope (50-fold enlargement) 1 No growth visible with the naked eye, but clearly visible under the microscope 2 Growth visible with the naked eye, covers up to 25% of the test surface 3 Growth visible with the naked eye, covers up to 50% of the test surface 4 Substantial growth, covers more than 50% of the test surface 5 Strong growth, covers the entire test surface
• a Lyocell fibre exhibits a clearly inhibited fungal growth relative to viscose fibres after 4 weeks at an air humidity of 85%.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Textile Engineering (AREA)
• General Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Life Sciences & Earth Sciences (AREA)
• Plant Pathology (AREA)
• Agronomy & Crop Science (AREA)
• Dentistry (AREA)
• General Health & Medical Sciences (AREA)
• Wood Science & Technology (AREA)
• Zoology (AREA)
• Environmental Sciences (AREA)
• Pest Control & Pesticides (AREA)
• Inorganic Chemistry (AREA)
• Health & Medical Sciences (AREA)
• Artificial Filaments (AREA)
• Knitting Of Fabric (AREA)
• Materials For Medical Uses (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
• Woven Fabrics (AREA)
• Polysaccharides And Polysaccharide Derivatives (AREA)
• Agricultural Chemicals And Associated Chemicals (AREA)

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Citations (5)

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• 2002
  • 2002-09-03 AT AT0131602A patent/AT412728B/de not_active IP Right Cessation
• 2003
  • 2003-09-01 RU RU2005107415/04A patent/RU2324776C2/ru not_active IP Right Cessation
  • 2003-09-01 BR BRPI0313993-0A patent/BR0313993B1/pt not_active IP Right Cessation
  • 2003-09-01 JP JP2004533037A patent/JP4351999B2/ja not_active Expired - Fee Related
  • 2003-09-01 AT AT03793457T patent/ATE364742T1/de not_active IP Right Cessation
  • 2003-09-01 AU AU2003260154A patent/AU2003260154A1/en not_active Abandoned
  • 2003-09-01 DE DE50307480T patent/DE50307480D1/de not_active Expired - Lifetime
  • 2003-09-01 EP EP03793457A patent/EP1534882B1/de not_active Expired - Lifetime
  • 2003-09-01 CN CNB038208539A patent/CN100338272C/zh not_active Expired - Fee Related
  • 2003-09-01 KR KR1020057003692A patent/KR101031824B1/ko active IP Right Grant
  • 2003-09-01 WO PCT/AT2003/000251 patent/WO2004022822A1/de active IP Right Grant
• 2005
  • 2005-02-25 US US11/066,510 patent/US20050225002A1/en not_active Abandoned

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