WO1998018863A1 - Process of recycling leather residues and production of composite materials - Google Patents

Process of recycling leather residues and production of composite materials Download PDF

Info

Publication number
WO1998018863A1
WO1998018863A1 PCT/PT1997/000008 PT9700008W WO9818863A1 WO 1998018863 A1 WO1998018863 A1 WO 1998018863A1 PT 9700008 W PT9700008 W PT 9700008W WO 9818863 A1 WO9818863 A1 WO 9818863A1
Authority
WO
WIPO (PCT)
Prior art keywords
leather
production
residues
composite materials
recycling
Prior art date
Application number
PCT/PT1997/000008
Other languages
English (en)
French (fr)
Inventor
José Maria DA FONTE FERREIRA
Fernando Jorge Pinho De Almeida
Original Assignee
Universidade De Aveiro
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 Universidade De Aveiro filed Critical Universidade De Aveiro
Priority to EP97945113A priority Critical patent/EP0906369A1/en
Publication of WO1998018863A1 publication Critical patent/WO1998018863A1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B13/00—Shredding hides or leather
    • 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
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B7/00—Special leathers and their manufacture

Definitions

  • This invention refers to a process of recycling leather residues and production
  • the insteps and the soles are then assembled, shaped, glued together and pressed, ending the process by finishing touches and packing the product.
  • TABLE 1 shows a generic scheme of the process of fabrication.
  • this quantity does not represent the totality of
  • the technology of tanneries consists in a series of physicochemical and mechanical operations applied throughout the productive process aiming at
  • Both tanning processes seek to stabilize the fibres of the hides/skins through the formation of physicochemical bonds, in a way to make them durable and
  • the vegetable tanning agents are extracted from plants and leaves and consist
  • the acid groups may combine with the basic groups of the skin/hide protein,
  • the vegetable tanning leather residues do not represent a serious danger to
  • the tanning agents used in the mineral tannage are the basic chrome, zirconium and alum salts.
  • the alum salts have a best affinity with the skin/hide than with the
  • hydroxylic acid salts such as tartrate and sodium citrate
  • Zirconium can be used as a tanning agent to produce a zirconium-tanned
  • the zirconium and alum salts are white and are used to produce white leathers.
  • the chrome tannage is the more efficient process to obtain high quality leathers, and the most widely used.
  • This Invention refers to a new method of recycling leather residues and its
  • the method involves a first stage of shredding (removal of the fibres) the
  • the leather fibres are impregnated, by means of a gluing system, with aminoplastic resins (16-17) and an adequate catalyser, blended in
  • the ratio in weight of resins in the blend can vary
  • Percentages of resins between 30 to 40% represent a good compromise.
  • the blend of the two components can be made either
  • Pressing can be made between metallic moulds and/or directly on sublayers, to
  • the surface of the produced materials acquires a fine aspect and there is no

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Dermatology (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
PCT/PT1997/000008 1996-10-25 1997-10-27 Process of recycling leather residues and production of composite materials WO1998018863A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP97945113A EP0906369A1 (en) 1996-10-25 1997-10-27 Process of recycling leather residues and production of composite materials

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PT101930 1996-10-25
PT10193096A PT101930B (pt) 1996-10-25 1996-10-25 Processo de reciclagem de residuos de couro e producao de materiais compositos

Publications (1)

Publication Number Publication Date
WO1998018863A1 true WO1998018863A1 (en) 1998-05-07

Family

ID=20085636

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/PT1997/000008 WO1998018863A1 (en) 1996-10-25 1997-10-27 Process of recycling leather residues and production of composite materials

Country Status (4)

Country Link
EP (1) EP0906369A1 (es)
AR (1) AR008899A1 (es)
PT (1) PT101930B (es)
WO (1) WO1998018863A1 (es)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9185947B2 (en) 2011-03-18 2015-11-17 Nike, Inc. Forming portion of an article from fabrication scrap, and products thereof
CN106351076A (zh) * 2016-08-29 2017-01-25 福建永盛皮革制品有限公司 一种利用含铬皮屑制作模塑品的方法
ITUB20160424A1 (it) * 2016-01-29 2017-07-29 Evelino Leandro Procedimento per il recupero di scarti di lavorazioni di pellami e di cuoio
ITUB20160574A1 (it) * 2016-02-09 2017-08-09 Tesa S R L Metodo per l'ottenimento di materiale a base di pelle animale e prodotti ottenuti con tale materiale
USD932772S1 (en) 2018-08-31 2021-10-12 Red Wing Shoe Company, Inc. Interlocking tile
USD962647S1 (en) 2018-08-31 2022-09-06 Red Wing Shoe Company, Inc. Set of interlocking tiles

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2166994A5 (es) * 1971-12-07 1973-08-17 Ockhardt Kuno
SU232440A1 (ru) * 1967-04-13 1976-06-05 Центральное Проектно-Конструкторское Бюро Министерства Легкой Промышленности Латвийской Сср Способ получени искусственного волокнистого материала
JPS5388302A (en) * 1977-01-11 1978-08-03 Rikio Tsuchiya Production of synthetic leather comprising leather waste and plastic powder
EP0089029A2 (en) * 1982-03-12 1983-09-21 Amf Incorporated Reconstituted leather product from fibrillated leather fibers
RU2035472C1 (ru) * 1992-12-04 1995-05-20 Товарищество с ограниченной ответственностью - Научно-производственное предприятие "КОПО" Композиция для получения листового криоструктурированного коллагенсодержащего материала
JPH08173206A (ja) * 1994-12-26 1996-07-09 New Oji Paper Co Ltd 靴芯材用再生皮革

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU232440A1 (ru) * 1967-04-13 1976-06-05 Центральное Проектно-Конструкторское Бюро Министерства Легкой Промышленности Латвийской Сср Способ получени искусственного волокнистого материала
FR2166994A5 (es) * 1971-12-07 1973-08-17 Ockhardt Kuno
JPS5388302A (en) * 1977-01-11 1978-08-03 Rikio Tsuchiya Production of synthetic leather comprising leather waste and plastic powder
EP0089029A2 (en) * 1982-03-12 1983-09-21 Amf Incorporated Reconstituted leather product from fibrillated leather fibers
RU2035472C1 (ru) * 1992-12-04 1995-05-20 Товарищество с ограниченной ответственностью - Научно-производственное предприятие "КОПО" Композиция для получения листового криоструктурированного коллагенсодержащего материала
JPH08173206A (ja) * 1994-12-26 1996-07-09 New Oji Paper Co Ltd 靴芯材用再生皮革

Non-Patent Citations (6)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Derwent World Patents Index; Class A94, AN 73-21903U, XP002050983 *
DATABASE WPI Section Ch Week 7826, Derwent World Patents Index; Class F04, AN 78-47137A, XP002050984 *
DATABASE WPI Section Ch Week 7836, Derwent World Patents Index; Class A32, AN 78-64329A, XP002050982 *
DATABASE WPI Section Ch Week 8704, Derwent World Patents Index; Class A82, AN 87-024105, XP002050981 *
DATABASE WPI Section Ch Week 9603, Derwent World Patents Index; Class A97, AN 96-028626, XP002050985 *
PATENT ABSTRACTS OF JAPAN vol. 096, no. 011 29 November 1996 (1996-11-29) *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9185947B2 (en) 2011-03-18 2015-11-17 Nike, Inc. Forming portion of an article from fabrication scrap, and products thereof
ITUB20160424A1 (it) * 2016-01-29 2017-07-29 Evelino Leandro Procedimento per il recupero di scarti di lavorazioni di pellami e di cuoio
ITUB20160574A1 (it) * 2016-02-09 2017-08-09 Tesa S R L Metodo per l'ottenimento di materiale a base di pelle animale e prodotti ottenuti con tale materiale
CN106351076A (zh) * 2016-08-29 2017-01-25 福建永盛皮革制品有限公司 一种利用含铬皮屑制作模塑品的方法
USD932772S1 (en) 2018-08-31 2021-10-12 Red Wing Shoe Company, Inc. Interlocking tile
USD962647S1 (en) 2018-08-31 2022-09-06 Red Wing Shoe Company, Inc. Set of interlocking tiles
USD974040S1 (en) 2018-08-31 2023-01-03 Red Wing Shoe Company, Inc. Set of interlocking tiles

Also Published As

Publication number Publication date
PT101930B (pt) 2000-05-31
AR008899A1 (es) 2000-02-23
EP0906369A1 (en) 1999-04-07
PT101930A (pt) 1998-05-29

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