Innovative Technologies for the Production of Elastic Leather Materials

Abstract

Industrial approbation Technological processes Filling-retanning Semi-finished chrome Tanning product Production of elastic leather Physicochemical properties For the industrial approbation of the developed biotechnologies, using the chrome tanning semi-finished product of wet-salted raw material of cattle-heavy heifer, bulls, and outgrowths thickness respectively by 1.7, 1.5 and 1.4 mm. The filling-retanning processes were carried out in a "Doze" company drum (Germany) with a volume of 0.39 м 3 at a temperature of 30-32°C, mixing with its 7-8 min-1 rotation speed and using ionized nanosilica A-300. The use of ionized nanosilica A-300 by 1 technology provides a reduction in the consumption of imported materials through the formation of increased volumetric output and adhesion in leather material, respectively, by 13% and 19-26% compared with the material obtained by the current technology. The use of the biocatalytic modifier in 2 technology make it possible to reduce the consumption of imported reagents by 38% with an increase in the elasticplastic parameters of the leather material, in particular, increase the breaking elongation to 77%. At the same time, the output area of leather material is increase and achieved by 5.1%. According to 3 technology, complete replacement of the quiberacho extract with a nanocrystalline A-300 ensures the formation of light-colored leather with a topographically more homogeneous with an output area increased by 3.7%. The complex of physico-mechanical properties of the resulting leather is dominated by industrially manufactured and meets the requirements for elastic leather for garments in accordance with DSTU 3115-95 and the international standard ISO 9001:2015 "Quality management systems. Requirements". Manufacturing on the developed technologies for the formation of chrome-tanning elastic leather materials are patented and can be considered as promising for the introduction of tanneries into the industry.

Studying the similarities of deformation properties of leather materials in the process of creating a model of shoes

“…The works of modern scientists in this direction (Kasyan, 2001;Danilkovich et al, 2013;Andreeva et al, 2018;Mokrousova and Okhmat, 2013;DSTU 4239-2003;EN ISO 20344: 2004;EN ISO 20345: 2004) suggest the successful use of the same basic high-value leather materials for shoe uppers in the design and manufacture of the product without losing the quality and comfort of the latter. Though there are no studies to confirm the hypothesis in using a cheap segment of materials for the manufacture of the layout, the quality and comfort of the finished product will be high.…”

“…The reliability of the experimental research results has been assessed by traditional methods of mathematical statistics. The standard deviation σв, the coefficient of variation ν and the parameters reflecting the proximity of the research results is the accuracy of the test δ were determined (Danilkovich et al, 2013).…”

Дослідження Екологічної Технології Дублення Шкіри З Використанням Модифікованого Монтморилоніту

“…Pelt was obtained from raw materials of cattle after the pickling process. The technological scheme of obtaining pelt provided for the processing of raw materials according to the traditional technology of leather production for upper shoe [4].…”

“…Pelts for tanning were formed into two treatment options. The tanning of was carried out according to the standard technology leather for shoes [4]. The technology involved the implementation of the tanning process, increasing the basicity of tanning compounds, laying of the semi-finished product after tanning.…”