Abstract
This paper has considered the possibility of using new finishing formulations to finish the Crust leather, manufactured from cattle raw materials aimed to finish shoes and leather garments.The quality indicators of finishing formulations and their elementary chemical composition have been investigated. It was found that the finishing formulations possess a high covering capacity due to the presence of mineral pigments in their composition. X-ray fluorescent analysis has proven that the presence of chromium pigments and copper compounds renders the green color to the composition; the compounds of cobalt, copper, iron, chromium ‒ blue color; cobalt compounds ‒ reddish-brown color.It has been established that the finishing formulations are resistant to the effect of electrolytes of different nature over a wide pH interval, from 2 to 11.When determining the uniformity of the composition by using a chromatography method involving fan-shaped paper, it was found that the composition of blue has a pronounced purple hue, of reddish-brown – red.The effectiveness of the use of finishing formulations to finish the Crust leather has been proven by determining the indicators of its quality. The finishing formulations give the Crust high resistance to dry (exceeding 500 rotations) and wet friction (exceeding 150 rotations), multiple bending (exceeding 50,000 rotations), the effect of water (2 to 5 points), and organic solvents (2 to 4 points). At the same time, the finishing formulations are characterized by rapid diffusion into the structure of the leather with a natural front surface with the simultaneous provision of specific properties to it. Specifically: water-repelling properties (hydrophobicity), shine, wax grain, matte, saturated homogeneous color. The leather with the introduced finishing formulations does not require fixing the resulting coating with water-based varnish.It is recommended to use the finishing formulations in the production of Crust leather shoe top by applying them onto the surface by spraying or using a brush to create the desired effect
Highlights
Today, in the production of genuine leather for the top of shoes, finishing processes and operations occupy perhaps the most important place
To achieve the desired effect, the plant can use a variety of units for the application of finishing formulations, dryers of different types, ironing machines, and hydraulic presses, laser installations, and engravers [6]
The use of Crust makes it possible to preserve the natural pattern of the front layer, characteristic of genuine leather, and, through the use of special finishing formulations, give the article the required shade, vintage effect, as well as exclusivity, which is relevant for ensuring a personalized approach in the manufacture of shoes
Summary
In the production of genuine leather for the top of shoes, finishing processes and operations occupy perhaps the most important place. It is this cycle of production that accounts for the largest energy and material costs. Interesting is non-colored Crust, which makes it possible to create a unique artistic effect by applying finishing formulations by spraying them or applying with a brush onto finished goods. The use of Crust makes it possible to preserve the natural pattern of the front layer, characteristic of genuine leather, and, through the use of special finishing formulations, give the article the required shade, vintage effect, as well as exclusivity, which is relevant for ensuring a personalized approach in the manufacture of shoes
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