EP1941094B1 - Verfahren zur verarbeitung von cellulosematerial zu einem lederähnlichen produkt - Google Patents

Verfahren zur verarbeitung von cellulosematerial zu einem lederähnlichen produkt Download PDF

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Publication number
EP1941094B1
EP1941094B1 EP06799880A EP06799880A EP1941094B1 EP 1941094 B1 EP1941094 B1 EP 1941094B1 EP 06799880 A EP06799880 A EP 06799880A EP 06799880 A EP06799880 A EP 06799880A EP 1941094 B1 EP1941094 B1 EP 1941094B1
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EP
European Patent Office
Prior art keywords
procedure according
drum
advantageously
solution
minutes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP06799880A
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English (en)
French (fr)
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EP1941094A1 (de
Inventor
Claudio Tomaselli
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
OKINAWA Srl
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OKINAWA Srl
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Publication of EP1941094A1 publication Critical patent/EP1941094A1/de
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Publication of EP1941094B1 publication Critical patent/EP1941094B1/de
Not-in-force legal-status Critical Current
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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
    • D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/007—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments

Definitions

  • This invention concerns a procedure for processing cellulose material, by means of dyeing and softening, to obtain an unalterable finished material.
  • this invention refers to a dyeing and softening process of cellulose material that makes it possible to obtain a finished product similar in appearance and resistance to leather, and resistant to water, that is to say to washing with detergents and in washing machines, or to dry cleaning professes with ethylene perchlorate.
  • the procedure according to the invention substantially foresees the use of a method for processing animal skins employed in tanning, using cellulose as the raw material, to obtain a finished skin to be used for manufacturing leather products, with the feature of not altering if subjected to water washing or dry cleaning.
  • This invention can be applied in the sector for the production of fabrics and products similar to leather used in clothing, furnishing and coverings in general.
  • the typical example is leather, which has been proposed in an artificial form, or reprocessed or recomposed also with natural products in a plurality of solutions, some of which are described below.
  • the US patent US 4,212,927 proposes a process for the production of artificial leather that foresees the processing of cellulose fibres with aqueous baths following the techniques used for the production of paper.
  • This patent shows that subjecting a synthetic material to a tanning process produces a product similar to leather even though tanning is not designed to characterize a product but to prevent it from rotting.
  • the sheet base consists of a vacuolated polyurethane matrix with internal polyester or polyethylene fibres and a coating of polyurethane resin printed with a design similar to natural leather.
  • the sheet material is subjected to:
  • the dyeing phase is carried out after greasing with sulphonated esters in a rotating drum for a couple of hours with mixtures of specific metallocomplex dyes for polyester fibres and polyurethane polymers.
  • the raw material consists of synthetic skins similar to natural ones, which are subjected to a procedure comparable to tanning.
  • This method is not designed for essentially natural products but for products which are mainly synthetic which primarily consist of polyurethane materials, containing polyester or polyethylene fibres coated with a polyurethane resin printed with a design similar to natural leather.
  • This material has nothing natural about it, and as a result the finished product will have all the problems typical of artificial products made on a synthetic base.
  • This invention proposes to provide a procedure for the creation of materials similar to leather and that can eliminate or at least reduce the drawbacks described above.
  • the invention proposes to provide a procedure for the creation of a material that foresees the features of being similar to leather, both from the point of view of softness and in appearance, and which at the same time guarantees the non-alterability when processed with water or ethylene perchlorate.
  • the raw material is based on cellulose and is chemically processed in an aqueous solution to dye it and soften it so that it acquires a more leather-like "feel" while maintaining its particular features.
  • This invention therefore consists of a procedure for the production of a material similar to leather starting from a cellulose base, whose features are described in the main claim.
  • the procedure according to the invention therefore foresees the use of cellulose as the raw material, in particular a special cellulose material in the form of a white card-like sheet, wound in reels which are then cut into sheets.
  • One of the features of the cellulose material is that it does not alter when it comes into contact with water or ethylene perchlorate, allowing it to be chemically processed in an aqueous solution to dye it and soften it so that it acquires a leather-like "feel" and maintains its particular features.
  • the cellulose material is one that is generally used to make labels for jeans and commercially known as TEXON ® 601 produced by Texon International.
  • This consists of cellulose fibres impregnated with a dispersion of carboxylated styrene-butadiene polymer and containing vulcanizing and ageing agents and non-nitrogenous pigments.
  • drums rotating cylinders, known as "drums"
  • wetting of the material, which consists of soaking it in hot water at 50/60°C and rotating the drum for several hours so that the fibres can react with the chemical products they will subsequently come into contact with.
  • the first chemical reaction to which the cellulose material is subjected consists of dyeing, carried out with a predetermined quantity of hot water at 40/50°C using either mixtures of metallocomplex dyes alone or adding azodyes and tannin extracts to the solution, this operation lasting from 45 to 60 minutes.
  • greasing products are added to the solution in a mixture consisting of sulphonated fish and vegetable oils and synthetic fats, with a further rotation for around 120 minutes.
  • the chemical products are then fixed on the material by adding a solution of formic acid to the solution in the drum, and if necessary also a solution of trivalent metal salts, reacting for around 60/90 minutes.
  • a new solution of formic acid is used, after replacing the aqueous solution, with the addition of a resin and left to soak for around 60 minutes.
  • a 2.058 kg solution is now added, consisting of 60% of sulphonated fish oil, 30% of long-chain phosphoric ester-based synthetic oils and 10% of natural and vegetable oils, and rotated for 120 minutes.
  • the bath is acidified with 0.245 kg of formic acid and rotated for 20 minutes.
  • Another 0.147 kg (up to 0.245 kg) of formic acid is added, rotating the drum for another 30 minutes.
  • the solution in the drum is now drained off and the material is thoroughly rinsed before adding 29.4 1 of hot water at 40°C with 0.098 kg of formic acid, rotating the drum for 10 minutes and then adding 0.098 kg of a solution of acrylic polymer and rotating for another 30 minutes. The solution is then drained off and the material is rinsed thoroughly again.
  • the sheets are removed from the drum and left to dry on steel plates.
  • the finished product is identical to leather both in consistency and in appearance, presenting the fundamental advantage of being resistant to washing and to stress.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
  • Coloring (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Claims (12)

  1. Verfahren zur Herstellung eines in Beschaffenheit und Aussehen lederähnlichen Materials, dadurch gekennzeichnet, dass es als Grundmaterial eine mit einer Copolymerdispersion imprägnierte Cellulosefaser verwendet, und dadurch, dass dieses Grundmaterial den folgenden Arbeitsstufen unterzogen wird:
    - Färben;
    - Weichmachen;
    - Fixieren.
  2. Verfahren nach Anspruch 1, bei dem die Stufe des Färbens das Eingeben des Cellulosematerials in eine Trommel und das Behandeln in warmem Wasser mit einem pulverförmigen Gemisch aus Farbstoffen und Gerbstoffextrakt umfasst.
  3. Verfahren nach einem der vorherigen Ansprüche, bei dem die Stufe des Weichmachens das Hinzufügen einer Lösung aus sulfoniertem Fischöl, synthetischen Ölen und Fettsäureestern und das Säuern des Bads mit Ameisensäure umfasst.
  4. Verfahren nach einem der vorherigen Ansprüche, bei dem die Stufe des Fixierens das Ablaufenlassen der in der Trommel enthaltenen Lösung, das Spülen und das Einleiten von warmem Wasser und Ameisensäure mit Rotation der Trommel und einer Acrylpolymerlösung umfasst.
  5. Verfahren nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Cellulosefaser mit einer Dispersion von carboxyliertem Styrol-Butadien-Copolymer imprägniert wird.
  6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass die Cellulosefaser mit einer Dispersion von carboxyliertem Styrol-Butadien-Copolymer imprägniert wird, die Vulkanisierungs- und Alterungsmittel enthält.
  7. Verfahren nach einem der Ansprüche 5 und 6, dadurch gekennzeichnet, dass die Cellulosefaser mit einer Dispersion imprägniert wird, die Pigmente enthält, die vorteilhafterweise keinen Stickstoff enthalten.
  8. Verfahren nach einem der vorherigen Ansprüche, dadurch kennzeichnet, dass mehrere Bögen aus mit einer Copolymerdispersion imprägnierten Cellulosefaser in eine Trommel mit einem vorbestimmten Volumen zusammen mit einer vorbestimmten Menge warmen Wassers mit einer vorbestimmten Temperatur, vorteilhafterweise 50°C, eingegeben werden, und dadurch, dass diese Trommel dann für eine vorbestimmte Zeit, vorteilhafterweise drei Stunden, rotieren gelassen wird, und dadurch, dass das Material dann für mehrere Stunden im Bad gelassen wird.
  9. Verfahren nach Anspruch 8, dadurch gekennzeichnet, dass es das anschließende Ablaufenlassen des Wasserbads und das Einleiten einer vorbestimmten Menge warmen Wassers mit einer vorbestimmten Temperatur, vorteilhafterweise 40°C, mit einer vorbestimmten Menge eines pulverförmigen Gemischs aus Metallkomplex- und Azofarbstoffen und Quebrachogerbstoffextrakt in Pulverform vorsieht, wobei dann die Trommel für eine vorbestimmte Zeit, vorteilhafterweise 45 Minuten, rotieren gelassen wird.
  10. Verfahren nach Anspruch 9, dadurch gekennzeichnet, dass es das weitere Hinzufügen einer zu 60% aus sulfoniertem Fischöl, zu 30% aus synthetischen Ölen auf der Basis von langkettigen Phosphorsäureestern und höheren Fettsäuren und zu 10% aus natürlichen und pflanzlichen Ölen bestehenden Lösung und die anschließende Rotation für eine vorbestimmte Zeit, vorteilhafterweise hundertzwanzig Minuten, sowie das Säuern des Bads mit einer vorbestimmten Menge Ameisensäure und die Rotation für eine vorbestimmte Zeit, vorteilhafterweise 20 Minuten, und das anschließende Hinzufügen einer weiteren Menge Ameisensäure und die Rotation für eine vorbestimmte Zeit, vorteilhafterweise 30 Minuten, vorsieht.
  11. Verfahren nach Anspruch 10, dadurch gekennzeichnet, dass es das Ablaufenlassen der in der Trommel enthaltenen Lösung und ein reichliches Spülen, woraufhin dann eine vorbestimmte Wassermenge mit einer vorbestimmten Temperatur, vorteilhafterweise 40°C, mit einer vorbestimmten Menge Ameisensäure eingeleitet wird, und die anschließende Rotation der Trommel für eine vorbestimmte Zeit, beispielsweise 10 Minuten, und das anschließende Hinzufügen einer vorbestimmten Menge einer Acrylpolymerlösung und die anschließende Rotation für eine vorbestimmte Zeit, beispielsweise 30 Minuten, und schließlich das Ablaufenlassen der Lösung und ein reichliches Spülen vorsieht.
  12. Verfahren nach einem der Ansprüche 8 bis 11, dadurch gekennzeichnet, dass es das Herausnehmen der Bögen und das Trocknen derselben auf beheizten Stahlplatten vorsieht.
EP06799880A 2005-09-09 2006-09-04 Verfahren zur verarbeitung von cellulosematerial zu einem lederähnlichen produkt Not-in-force EP1941094B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SM200500021A SM200500021A (it) 2005-09-09 2005-09-09 Procedimento per il trattamento di materiale cellulosico per ottonere un prodotto simile alla pelle
PCT/SM2006/000003 WO2007030084A1 (en) 2005-09-09 2006-09-04 Procedure for the processing of cellulose material to obtain a product similar to leather

Publications (2)

Publication Number Publication Date
EP1941094A1 EP1941094A1 (de) 2008-07-09
EP1941094B1 true EP1941094B1 (de) 2011-03-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP06799880A Not-in-force EP1941094B1 (de) 2005-09-09 2006-09-04 Verfahren zur verarbeitung von cellulosematerial zu einem lederähnlichen produkt

Country Status (5)

Country Link
EP (1) EP1941094B1 (de)
AT (1) ATE500379T1 (de)
DE (1) DE602006020473D1 (de)
SM (1) SM200500021A (de)
WO (1) WO2007030084A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1401571B1 (it) 2010-08-20 2013-07-26 Okinawa Srl Procedimento per la produzione di un materiale simile alla pelle

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2374459A1 (fr) * 1976-12-17 1978-07-13 Arjomari Prioux Procede pour l'obtention d'un materiau decoratif, de recouvrement, de protection, de faconnage obtenu par ce procede
IT1178956B (it) * 1984-06-06 1987-09-16 Cortan Spa Procedimento per ottenere pellami sintetici simili a quelli naturali mediante trattamento chimico di materiali sintetici in foglio
IT1245467B (it) * 1991-03-19 1994-09-20 Lorica Spa Procedimento per ottenere un prodotto in foglio avente aspetto simile a quello della pelle naturale, a partire da una pelle sintetica realizzata in materiale composito

Also Published As

Publication number Publication date
DE602006020473D1 (de) 2011-04-14
SM200500021B (it) 2007-03-14
ATE500379T1 (de) 2011-03-15
WO2007030084A1 (en) 2007-03-15
SM200500021A (it) 2007-03-14
EP1941094A1 (de) 2008-07-09

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