METHOD FOR PRODUCING LEATHER PELLETS AND COMPOUND GRANULES, AND USE THEREOF

Title:

METHOD FOR PRODUCING LEATHER PELLETS AND COMPOUND GRANULES, AND USE THEREOF

Document Type and Number:

WIPO Patent Application WO/2011/020680

Kind Code:

A3

Abstract:

The invention relates to a method for producing leather pellets, to a method for producing compound granules from leather pellets and a polymer material, and to the use of such compound granules for producing molded parts or films. Said leather pellets are produced through the following steps: Shavings, crust leather remnants and finished leather waste are obtained as waste products in leather production and finished leather processing; the shavings, crust leather remnants and finished leather waste are milled into ground leather stock comprising leather fibers; the ground stock is pressed into leather pellets; and the leather pellets are dried to a residual moisture content of no more than 30% by weight. The leather pellets can be mixed with a polymer material at a ratio of 10-95% by weight and bonded to one another and shaped forming compound granules as another intermediate product. Said compound granules can be used to produce molded parts by means of injection molding or films by means of calendering.

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Inventors:

BADER THOMAS CHRISTOF (DE)

Application Number:

PCT/EP2010/060797

Publication Date:

May 05, 2011

Filing Date:

July 26, 2010

Export Citation:

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Assignee:

BADER GMBH & CO KG (DE)
BADER THOMAS CHRISTOF (DE)

International Classes:

C08L89/06; C14B13/00

Domestic Patent References:

WO2009135239A1	2009-11-12
WO2007121497A1	2007-11-01

Foreign References:

EP1475413A1

2004-11-10

Other References:

H. DOMININGHAUS: "Die Kunststoffe und ihre Eigenschaften", 2005, SPRINGER-VERLAG, Berlin, ISBN: 3-450-21410-0, pages: 291,294, XP002621509
H. DOMININGHAUS: "Die Kunststoffe und ihre Eigenschaften", 1998, SPRINGER-VERLAG, Berlin, ISBN: 3-540-62659-X, pages: 135,1136, XP002621392

Attorney, Agent or Firm:

WOLF, Eckhard et al. (Stuttgart, DE)

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