Nowadays, there is a lot of leather material in the international market with different specifications and qualities. Since furniture production, especially for upholstered sofa, chairs, similar products, are assembled connected combination glue connectors, we need specific selection each product. Types their qualities varied as well price. To assure quality product to define many factors affec...

This article is focused on the optimization of heat radiation intensity across the surface of an aluminium mould. The mould is warmed by infrared heaters located above the mould surface, and in this way artificial leathers in the automotive industry are produced (e.g. the artificial leather on a car dashboard). This described model allows us to specify the location of infrared heaters over the ...

This study was conducted to identify some of ante and post-mortem surface defects in Sudanese raw sheep and goat skins and to evaluate the effect of some of these defects on some of the key physical properties of the leather produced. The results indicated that most of the ante-mortem defects disappear during the tannage, re-tannage and finishing operations. However some defects remain visible ...

The determination of chromium(VI) at high concentrations can be performed spectrophotometrically with 1,5-diphenylcarbazite. The standard determination methods for chromium(VI) in leather like DIN53314 or IUC 18 have a detection limit of 3mg/kg leather. However the detection limit is not enough for lower concentrations. There is a need for lower detection limits because public awareness of hexa...

The aim of this study was to investigate the feasibility of two decontaminating processes, ozonation and electrocoagulation, to decolorize wastewater generated by humid finishing leather production. With the objective to determine if one or both process could remove color, benchscale experiments were conducted with three different colorants, representative of the main dye groups: di-azo (CI Dir...

This paper follows a knowledge production function approach to assess the contribution of R&D spending, the purchase of new machinery, and producers-users interaction to the productivity performance of German and Italian firms in manufacturing. For this purpose it employs micro-aggregated data from the First Community Innovation Survey. The regression analysis confirms the results of previous s...