A method for preparing cellulose dope from textile waste including cellulose fibers in a mass percentage of more than 50%. The method includes shredding the textile waste in order to obtain a first mixture of shredded fibers and residues, separating at least a portion of the non-cellulosic components from the first mixture in order to obtain a second mixture in which the mass percentage of cellulose fibers is greater than the mass percentage of cellulose fibers in the first mixture, filtering the second mixture in order to recover a solid phase including the cellulose fibers, dissolving the cellulose fibers of the solid phase so as to obtain a cellulose dope including undissolved particles, and filtering the cellulose dope in order to obtain a cellulose dope that is separated from the undissolved particles.
C08B 1/00 - Preparatory treatment of cellulose for making derivatives thereof
C08J 11/16 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with inorganic material
A method (100) for manufacturing textile filaments (10) comprises the successive steps of: surface treating (102) a non-twisted multifilament (20), covering (104) the multifilament with a cellulose pulp (24); soaking (106) the multifilament in a regeneration bath, and separating (114) the filaments of the multifilament so as to obtain a plurality of fibers individually covered with cellulose. The separation step comprises: a first step (118) of mechanical separation so as to detach excess cellulose from the multifilament; a second step (120) of cutting the multifilament into sections of shorter length so as to obtain bundles of fibers; and a third step (122) of washing the bundles of fibers in water with a cleaning agent so as to separate the fibers from one another and obtain textiles fibers individually covered with cellulose.
The invention relates to a method for preparing cellulose pulp from textile waste comprising cellulose fibres in a mass proportion of more than 50%. The method comprises shredding the textile waste to obtain a first mixture of shredded fibres and residues, separating at least part of the non-cellulosic components from the first mixture to obtain a second mixture having a larger mass proportion of cellulose fibres than the mass proportion of cellulose fibres in the first mixture, filtering the second mixture in order to recover a solid phase comprising the cellulose fibres, dissolving the cellulose fibres from the solid phase to obtain a cellulose pulp comprising undissolved particles, and filtering the cellulose pulp in order to obtain a cellulose pulp separated from the undissolved particles.
22 - Rope, netting, tents, awnings, sails and sacks; padding and stuffing materials
40 - Treatment of materials; recycling, air and water treatment,
Goods & Services
Cables not of metal; ropes; textile fibers; strings; packing
(stuffing) materials other than of rubber or of plastic
materials; padding and stuffing materials (except of rubber
or plastics); raw fibrous textile materials; bags (covers,
pouches) of textile for packaging. Dressmaking; decontamination of hazardous materials; tin
plating; galvanization; grinding; providing information with
respect to treatment of materials; burnishing by abrasion;
planing of materials; refining services; recycling of trash
and waste; clothing alteration; sawing of materials;
silkscreen printing; gilding services; dyeing services;
waste treatment (transformation); Cloth treating; sorting of
waste and recyclable raw material (transformation);
vulcanization (treatment of materials); air purification.
5.
METHOD FOR MANUFACTURING A FUNCTIONALISED DYED TEXTILE, USE OF A BLEACHING SOLUTION TO INCREASE THE DURABILITY OF A CHEMICAL FUNCTIONALISATION ON A DYED TEXTILE, AND DYED TEXTILE
Method (10) for manufacturing a functionalised dyed textile, comprising the following steps: obtaining (10-1) a dyed textile (12) comprising a majority by weight of natural fibres, preferably cellulose fibres; bleaching (10-2) the dyed textile to obtain a bleached dyed textile (13) the colouration of which has not been altered; and chemically functionalising (10-3) the bleached dyed textile (13) so as to obtain a hydrophobic dyed textile (14), the functionalisation having an increased attachment to the dyed textile due to the previous bleaching. The invention also discloses a functionalised dyed textile and the use of a bleaching solution to increase the durability of the chemical functionalisation on the dyed textile.
D06L 4/13 - Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goodsBleaching leather or furs using agents which develop oxygen using inorganic agents
D06M 11/38 - Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic Table
D06M 11/50 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompoundsSalts derived from anions with an amphoteric element-oxygen bond with hydrogen peroxide or peroxides of metalsTreating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereofSuch treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompoundsSalts derived from anions with an amphoteric element-oxygen bond with persulfuric, permanganic, pernitric, percarbonic acids or their salts
D06M 15/277 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acidsSalts or esters thereof containing fluorine
D06M 15/643 - Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
D06M 15/693 - Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials with macromolecular compoundsSuch treatment combined with mechanical treatment with natural or synthetic rubber, or derivatives thereof
D06P 1/52 - 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 using insoluble pigments or auxiliary substances, e.g. binders using compositions containing synthetic macromolecular substances
D06P 1/54 - Substances with reactive groups together with crosslinking agents
D06L 4/12 - Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goodsBleaching leather or furs using agents which develop oxygen combined with specific additives
01 - Chemical and biological materials for industrial, scientific and agricultural use
24 - Textiles and textile goods
25 - Clothing; footwear; headgear
Goods & Services
Chemical products for use in industry and science; chemical
products for use in photography; chemical products for use
in agriculture; chemical products for use in horticulture;
chemical products for use in forestry; unprocessed
artificial resins; unprocessed plastics; soil fertilizers;
fire-extinguishing compositions; metal-hardening
preparations; metal soldering preparations; chemical
substances for preserving foodstuffs; tanning materials;
adhesives for use in industry; salt for preserving, other
than for foodstuffs; chemical reagents other than for
medical or veterinary use; bleaching agents for industrial
use. Fabrics; bed blankets; fabrics for textile use; elastic
fabrics; velvet; bed linen; household linen; table linen
not of paper; bath linen except clothing. Clothing; headgear; shirts; clothing of leather; belts
(clothing); furs (clothing); gloves (clothing); scarves;
neckties; hosiery; socks; bedroom slippers; beach
footwear; ski boots; footwear for sports; underwear.
