EP1177257A1 - Composition contenant un materiau de cuir moulu permettant la production d'elements moules, production et utilisation de ces elements moules - Google Patents

Composition contenant un materiau de cuir moulu permettant la production d'elements moules, production et utilisation de ces elements moules

Info

Publication number
EP1177257A1
EP1177257A1 EP00929431A EP00929431A EP1177257A1 EP 1177257 A1 EP1177257 A1 EP 1177257A1 EP 00929431 A EP00929431 A EP 00929431A EP 00929431 A EP00929431 A EP 00929431A EP 1177257 A1 EP1177257 A1 EP 1177257A1
Authority
EP
European Patent Office
Prior art keywords
leather
binder
weight
composition
composition according
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.)
Withdrawn
Application number
EP00929431A
Other languages
German (de)
English (en)
Inventor
Istvan GEBEFÜGI
Georg Menache
Antonius Kettrup
Ferenz Zubonyai
Jenö FEKETE
Károly KADAR
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.)
Helmholtz Zentrum Muenchen Deutsches Forschungszentrum fuer Gesundheit und Umwelt GmbH
Original Assignee
Helmholtz Zentrum Muenchen Deutsches Forschungszentrum fuer Gesundheit und Umwelt GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Helmholtz Zentrum Muenchen Deutsches Forschungszentrum fuer Gesundheit und Umwelt GmbH filed Critical Helmholtz Zentrum Muenchen Deutsches Forschungszentrum fuer Gesundheit und Umwelt GmbH
Publication of EP1177257A1 publication Critical patent/EP1177257A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/04—Recovery or working-up of waste materials of polymers
    • C08J11/06—Recovery or working-up of waste materials of polymers without chemical reactions
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L89/00—Compositions of proteins; Compositions of derivatives thereof
    • C08L89/04—Products derived from waste materials, e.g. horn, hoof or hair
    • C08L89/06—Products derived from waste materials, e.g. horn, hoof or hair derived from leather or skin, e.g. gelatin
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2110/00—Foam properties
    • C08G2110/0016—Foam properties semi-rigid
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2110/00—Foam properties
    • C08G2110/0033—Foam properties having integral skins
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Definitions

  • Composition containing leather pulp for the production of moldings, process for the production or use of the moldings is a material that has been produced by moldings, process for the production or use of the moldings.
  • the invention relates to compositions containing leather and / or rubber particles, binders and plasticizers for the production of moldings or processes for the production of the moldings.
  • the invention furthermore relates to the production of the moldings for use as shoe components and as soundproofing elements for the construction and vehicle industries
  • the tendency of fiber grinders to adhere to the textile industry is known, the processes for forming thick and thin felt have developed. According to some views, the tendency to adhere is related to the surface of the elementary fibers, while in other opinion it is related to the electrostatic charging of the fiber parts
  • the shape of the products made from leather pulp is fixed after the binder has hardened, which can be achieved by drying, solvent removal, cooling, polycondensation and polyaddition.
  • the process parameters depend strongly on the properties of the binder and the millbase and the parameters of the Leather regrind is only considered in some patents - and to a very limited extent.This can result from the fact that in most patents the leather regrind is treated as a full material and it is already considered a success if the properties of the binder are not unacceptably deteriorated by the addition of the leather regrind become
  • the present invention is therefore based on the object, in deviation from previous practice, to provide a composition containing leather and / or rubber particles and binders in which, in the presence of leather particles, the advantageous properties of natural leather, ie favorable moisture absorption, moisture release, moisture retention and Resilient, flexible behavior is retained and used in the end product, and it is easy to process the composition into molded parts.
  • a further object of this invention is to provide a process for the production of molded parts from such compositions, the advantageous properties of natural leather being preserved and exploited in the molded parts.
  • Yet another object of the invention is to use the molded parts produced according to the invention as shoe components and as soundproofing elements for the construction and vehicle industries.
  • leather of natural structure is understood to mean that the leather is of natural origin, in contrast to synthetic leather, and that the leather has not been completely ground to powder and / or has been dewatered or denatured by heat treatment.
  • compositions containing leather and / or rubber particles and binders are provided, characterized in that the composition
  • a preferred composition contains: 30 - 89.5% by weight of leather pulp 10 - 60% by weight of binder and 0.5 - 20% by weight of plasticizer
  • a further preferred composition contains
  • Another preferred composition contains
  • the leather pulp is partially or completely, preferably 50 to 100%, replaced by rubber granules
  • the invention also provides a method for producing molded articles from such compositions, comprising the following steps
  • the method according to the invention comprises an effectively performable pressing operation, by means of which it is possible to produce, in a temperature range adapted to the properties of the leather, with minimal flow and with short operating times, end products shaped with different properties, depending on the binder-to-leather ratio
  • a feature of the method according to the invention is the simple feasibility of the preparatory operations, that is to say the grinding and the application of the binder, which greatly facilitates industrial use
  • the aim is not to produce a homogeneous material or material to be varied between narrow limits. Instead of the uniform physical (formal) appearance, uniform mixtures of fractions of the same shape are produced.
  • the greater adhesion property of the light fraction, the so-called leather down, is used when the binder is applied. The leather is therefore not completely ground to powder, which means that the original leather structure is retained
  • the process according to the invention is characterized in that the properties of the binder are modified by adding plasticizers in such a way that the original properties of the leather-sensitive material, which is sensitive to warmth, are largely preserved by preventing the decomposition process and minimizing water loss.
  • Thermoplastic and Special space-crosslinked polymers are used, the use of waste recyclates being economically advantageous and a qualitative disadvantage generally not being found
  • the method according to the invention is environmentally friendly, does not cause water and air pollution in the environment, and the hard waste can be ground again
  • the resulting oily leather recyclate has a density of 0.7-1.3 g / cm 3 and contains leather parts of a few mm in size embedded in the leather
  • the end products can have the following two uses, but this does not mean that other applications are restricted
  • end products with 30-75% by weight leather regrind can be used independently or combined with different materials
  • the leather pulp can be partially or completely replaced by rubber granulate, for example from waste or car tire refurbishment, so that compacts, plates and / or molded parts with high proportions of rubber granulate can be produced.
  • the proportion of leather pulp exchanged can vary within wide limits and For example, 50-100% of the leather ground material can be replaced by rubber granules
  • end products with a leather grain content of 50-90% by weight can be used independently or combined with other materials
  • Another feature of our process is that it can be easily coupled with textiles, paper, natural leather and / or plastic covers that are identical or similar with the binder
  • the comminution of the leather waste is carried out dry, and in such a way that the resulting regrind natural leather parts of natural structure with a grain size of 1-10 mm (preferably 4-8 mm) in a proportion of 50-80% by weight in the contains light leather fluff fraction, which is randomly distributed in an unordered amount of leather powder and leather fiber residues.
  • the rest i.e. 50-20% by weight, is powder ⁇ 1 mm and leather fiber residues> 10 mm
  • the leather pulp or the leather particles mentioned is partially or completely replaced by rubber granules.
  • rubber granules can be act, for example, synthetic and / or natural rubber. It is preferred to use rubber granulate from manufacturing waste or from rubber that occurs during vehicle tire reconditioning
  • thermoplastic or slightly cross-linked polymer preferably polyvinyl chloride, ethylene-vinyl acetate copolymer, thermoplastic rubber and slightly cross-linked polyurethane, which is in powder form and can be melted in a temperature range below 160 ° C.
  • the binder regrind has to meet the requirement that 100% of the material falls through a 1.25 mm sieve according to the DIN standard, but 15% of the material remains on a 0.63 mm sieve according to DIN standards.
  • the required fineness can generally be achieved using simple methods It is further preferred according to the invention to use PVC
  • Powder preferably semi-hard PVC powder, to be used as a binder regrind
  • the binder regrind is mixed with chlorinated or non-chlorinated phosphoric acid ester of 2 - 20% by weight - mostly 5 - 15% by weight - based on the total composition or with other plasticizers adapted to the binder.
  • the leather regrind described above is then added.
  • the amount of the leather pulp can be varied within wide limits in relation to the binder, ie in the range from 50 to 89.5% by weight (0.5 times to 8.95 times the quantity).
  • a preferred ratio is 100 to 400% by weight of leather pulp ( 1 - 4 times the amount), based on the mass of the binder.
  • the polar plasticizer improves the adhesion of the binder grains to the Leather fluff to a large extent, so that the material with a minimal loss of funds from the mixing system into the press mold can be berchtt or without change of the ratio can be moved and distributed
  • the shaping can be carried out by a heat treatment of 3-20 minutes, depending on the thickness of the product, in the mold which is pre-heated to 120-160 ° C, preferably 140-155 ° C
  • the properties of the finished product can vary within a wide range, depending on the composition, and for the modification of the properties, the above-mentioned insertion of the textile, paper and plastic couplings which can be coupled with the binder means further possibilities Practical examples
  • 54 g regrind from 54 g semi-hard polyurethane integral foam which has the parameters described above with regard to the grain size and can also be produced from production or recovered waste, are mixed with 10 g Tr ⁇ s (chloro-isoproyl) phosphate plasticizer without knots. Then 108 g leather regrind admixed, which has the size and composition parameters described above. After a few murmurs of Ruhr, the leather grain absorbs the binder grain and the two fractions do not separate or cannot be separated from one another
  • This cotton-like material is placed in the mold, which has been preheated to 155 ° C, after the textile cover has already been distributed in the mold and after the system has been closed, an 8-minute heat treatment is carried out. After the system has cooled, the finished part can be removed
  • This production process is a variant of that described in Example 2, the binder being 175 g of semi-hard PVC powder and moistened with 20 g of dioctyl phthalate as a plasticizer
  • thermoplastic rubber powder which has the grain size parameters described above, is knot-free mixed with 3 g of dioctyl phthalate as a plasticizer.
  • This material is then mixed with 250 g of leather pulp, which has the parameters and composition described above. After a few minutes of stirring, after the leather pulp has taken up the binder, the pulp the cotton-like material is transferred to the press mold preheated to 145 ° C, into which the paper-aluminum combination with the paper surface was placed upwards. The material was distributed evenly in the system and after closing the system it was on the for 6 minutes specified temperature maintained. After the tool has cooled, the finished product is removed.
  • the Hersgnacsprozeß is' by the method described in Example 4 is identical, except that here 100 g of ethylene-vinyl acetate copolymer were used as a binding material, which was dampened with 10 g Dioctylphatalat. Furthermore, the heat treatment is carried out for 8 minutes at 155 ° C. Since there is no reference, the mixture is transferred directly to the lower surface of the mold.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Dermatology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

L'invention concerne une composition contenant des particules de cuir et/ou de caoutchouc, des liants et des plastifiants. Cette composition permet de préserver les qualités du cuir naturel, à savoir une bonne absorption, évacuation et conservation de l'humidité, ainsi que des caractéristiques de flexibilité et de résistance, et se transforme aisément en éléments moulés. La production d'éléments moulés avec cette composition comprend les étapes suivants : a) on mélange le liant avec le plastifiant et les particules de cuir et/ou de caoutchouc, b) on transfère ce mélange dans un moule préchauffé à 120 DEG C - 160 DEG C, (c) on soumet le moule à un traitement thermique pendant 3 - 20 minutes à une température ne dépassant pas 160 DEG C, et (d) on refroidit et on retire l'élément moulé du moule. Ces éléments moulés peuvent être utilisés comme parties de chaussures ou comme éléments d'insonorisation dans l'industrie de la construction ou dans l'industrie automobile.
EP00929431A 1999-04-27 2000-04-26 Composition contenant un materiau de cuir moulu permettant la production d'elements moules, production et utilisation de ces elements moules Withdrawn EP1177257A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19919111 1999-04-27
DE1999119111 DE19919111C2 (de) 1999-04-27 1999-04-27 Ledermahlgut enthaltende Zusammensetzung für die Herstellung von Formteilen, Verfahren zur Herstellung bzw. Anwendung der Formteile
PCT/EP2000/003759 WO2000064982A1 (fr) 1999-04-27 2000-04-26 Composition contenant un materiau de cuir moulu permettant la production d'elements moules, production et utilisation de ces elements moules

Publications (1)

Publication Number Publication Date
EP1177257A1 true EP1177257A1 (fr) 2002-02-06

Family

ID=7906029

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00929431A Withdrawn EP1177257A1 (fr) 1999-04-27 2000-04-26 Composition contenant un materiau de cuir moulu permettant la production d'elements moules, production et utilisation de ces elements moules

Country Status (6)

Country Link
EP (1) EP1177257A1 (fr)
AR (1) AR023611A1 (fr)
BR (1) BR0010048A (fr)
CA (1) CA2367926A1 (fr)
DE (1) DE19919111C2 (fr)
WO (1) WO2000064982A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10060246B4 (de) * 2000-12-05 2011-05-05 Süße, Harald, Dipl.-Ing. Verfahren zur Verarbeitung von Tiermehlen und tierischen Hautresten zur Herstellung von Lederfaser-Verbundwerkstoffen unter Zusatz von Chromfalzspänen (CFS) und mineralischen Fasern ( TLV-Verfahren )
DE10320061B4 (de) * 2003-05-06 2005-12-22 Bader Gmbh & Co. Verfahren zur Herstellung eines Werkstoffs unter Verwendung von Lederabfällen und damit erzeugtes Formteil
DE102008017960A1 (de) * 2008-04-08 2009-10-15 Bader Gmbh & Co. Kg Flachmaterialbahn mit einer Faserschicht aus Lederfaser und Bindemittel sowie Verfahren zu deren Herstellung

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH107214A (de) * 1923-12-01 1924-10-01 Louis Benoit Albert Verfahren zur Herstellung von Gegenständen aus Kunstmasse.
DE865366C (de) * 1941-04-07 1953-02-02 Salpa Francaise Verfahren zur Herstellung eines Lederersatzes
GB586232A (en) * 1944-07-25 1947-03-12 Bermondsey Leather Company Ltd Process for utilising waste leather
US2464282A (en) * 1945-11-24 1949-03-15 Abrahams Morton Utilization of leather waste
FR1033397A (fr) * 1951-03-05 1953-07-10 Procédé industriel de fabrication de pièces plates ou en relief en composition contenant soit des déchets de cuir, de textiles, d'amiante, des farines de bois, du liège
US3116200A (en) * 1957-01-08 1963-12-31 Swift & Co Reconstituted leather product and method of making
JP2526045B2 (ja) * 1986-03-17 1996-08-21 出光石油化学株式会社 皮革様材の製造方法
HU212122B (en) * 1988-06-29 1996-02-28 Volk Polimer compositions containing waste rubber and/ore waste leather as filler
AU640005B2 (en) * 1990-05-11 1993-08-12 Idemitsu Kosan Co. Ltd Powdered leather and method of producing the same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0064982A1 *

Also Published As

Publication number Publication date
AR023611A1 (es) 2002-09-04
DE19919111C2 (de) 2002-06-20
DE19919111A1 (de) 2000-11-02
BR0010048A (pt) 2002-01-15
CA2367926A1 (fr) 2000-11-02
WO2000064982A1 (fr) 2000-11-02

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