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INNOVATIVE MATERIAL-TECHNOLOGY SYSTEM WITH CONTRIBUTION TO INCREASESING ECO-EFFICIENCY OF INDUSTRIAL LEATHER PROCESSING

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Author(s): M. Crudu | C. Gaidau | A. Crudu | M. Popescu | M. Ionescu

Journal: Annals of the University of Oradea. Fascicle of Textiles, Leatherwork
ISSN 1843-813X

Volume: XIV;
Issue: 1;
Start page: 95;
Date: 2013;
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Keywords: wet leather processing | salt reduction | bovine hides | free of chrome leather | compact wet finishing.

ABSTRACT
This paper presents the results of testing an innovative material-technology system for reduction of environmental pollution with salts in wet finishing leather processing phases. This presents the results of testing an innovative material-technology system for reduction of environmental pollution with salts in wet leather processing phases. Wet finishing experiments on leather were performed using new compact (retanning blends) materials with effects on reduction of sulphates from waste waters Designing new products is based on the latest knowledge on compatible materials with good stability over time, ability to penetrate the porous dermis structure and to interact with functional groups of collagen. Wet multifunctional materials were obtained and tested for wet finishing of hides with retanning, fatliquoring and dyeing properties reduction of sulphates in the effluents from compact retanning was min.45% and reduction of chloride 50%, chromium salts from effluents are completely reduced in the case of compact FOC (free of chrome) leather, reduction of ash content in the effluents from compact retanning was min. 40%. The leather wet finishing with newly multifunctional materials gave comparable physical properties to classical retanning.The economic effects to applying compact materials and technologies of bovine leather wet finishing are significant and refer to reducing processing time by 45%, water consumption by 30%, labour by 40%, auxiliary materials by 30%.
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