ALTERNATIVE LEATHER MANUFACTURING PROCESS -PRE-TANNING WITH A REACTIVE OLIGOMERIC RESIN
Journal Title: Annals of the University of Oradea. Fascicle of Textiles, Leatherwork - Year 2018, Vol 0, Issue 1
Abstract
This paper presents a non-conventional tanning technology, which uses a benzenesulfonate melamine-formaldehyde resin (BSMF) as pre-tanning agent. BSMF tanning alone can produce white leather, which generates chrome-free leather wastes. A BSMF pre-tanning step can be applied prior to a tanning step with lower chrome offer - 1 % Cr2O3, as compared with the conventional chrome tanning technology, which uses around 2 % Cr2O3. Thus, low chrome-content leather can be obtained, having the organoleptic properties and physico-mechanical behavior similar to those obtained through conventional processing, mainly as it regards the hydrothermal stability. The cross-section of leather pre-tanned with the BSMF resin is less compact as the cross-section of the conventionally chrome tanned leather, which proves that BSMF tannage alone cannot provide leather with the performances acquired by the chrome tannage. Physical deposition of the BSMF product in the interfibrillar voids and envelopment of collagen fibers, significantly contribute to the fibrilar matrix consolidation, which is the essential condition for splitting and shaving in the tanyard, before chrome tanning and vegetable retanning steps. A BSMF pre-tanning, followed by a chrome tanning with an offer of 1 % Cr2O3 and mimosa extract retanning results in leather having the compositional and structural characteristics required by the upper leather type standards.
Authors and Affiliations
Melinda PRUNEANU, Ingrid BUCIȘCANU, Vasilica MAIER, Tudorel BĂLĂU-MÎNDRU
Keywords
Related Articles
- EP ID EP432380
- DOI -
- Views 55
- Downloads 0
INCREASING THE COMPETITIVENESS OF COMPANIES IN THE TEXTILE AND CLOTHING DOMAIN AND INTEGRATION IN INNOVATIVE CLUSTERS
Successful businesses require access to knowledge and highly qualified workforce, faster access in finding suppliers, customers, competitors, educational institutions and research laboratories, specialized social assista...
JOB SATISFACTION OF TEXTILE INDUSTRY EMPLOYEES IN REPUBLIC OF SERBIA
Successful companies, including textile companies dealing with certain problems, are conditioned by an optimal combination of material and nonmaterial factor directed towards employee motivation. Employee motivation is v...
PHOTOCATALYTIC EFFICIENCY OF N-TIO2 APPLIED ON COTTON KNIT – PART 2
The objective of this work was to demonstrate the treatment durability at washing of N-TiO2 layers applied on cotton fabrics by padding and to investigate the particle adherence and morphology of the textile surface. Aft...
ANALYSIS OF THE TENSILE STRENGTH OF 100% WOOL YARN FROM DIFFERENT CLIMATIC AREAS
One of the basic conditions required of yarns is to have enough tensile strength to allow them to be turned into textiles and also to give the final product durability. During processing, threads are subjected to various...
DETERMINING LIGHTFASTNESS PROPERTIES OF VEGETABLE TANNINS AND CHEMICAL PROPERTIES OF THE LEATHERS TANNED WITH MODIFIED MIMOSA AND QUEBRACHO
The vegetable tannins are the oldest tanning agents used in leather industry. They give their natural character and colour to the leathers which they are applied to, but they have the disadvantage of colour change when t...