A kind of preparation method of grain effect leather product

Abstract

The invention discloses a preparing method for buffing effect leather products. The preparing method includes a primary spray dyeing step, a leather buffing step, a secondary spray dyeing step and anafter-treatment step of a leather blank; permeability detection is conducted on the leather blank before the first spray dyeing step, and a permeability detection value of the leather blank is obtained; and the total dosage of a penetrating agent in the primary spray dyeing step and the secondary spray dyeing step is determined according to the permeability detection value. By means of the preparing method, the penetrating agent dosage is controlled according to the permeability detection value of the leather blank, the penetration depth of dye water on a leather blank layer during spray dyeing can be controlled, the buffing effect degree obtained after leather buffing is controlled, the buffing effect is natural, the difference between leather skins of prepared buffing effect leather is low, and the appearance quality is stable.

Description

technical field [0001] The invention belongs to the technical field of tanning, and in particular relates to a preparation method of a leather product with a scratch effect. Background technique [0002] We can see leather products everywhere in our life. Our leather shoes, leather clothes, belts, bags, leather materials on the outside of the sofa, etc. are all leather products. Leather is denatured and non-perishable animal skin obtained through physical and chemical processing such as depilation and tanning. Leather is divided into full-grain leather, light buffed leather, repaired leather, nubuck leather, suede leather, etc. according to the surface treatment method, while smooth leather is divided into patent leather, aniline leather, semi-aniline leather, etc. The surface of leather often shows different shapes and patterns, which is due to the different surface treatment methods used in its processing and production process, which can bring different product qualities...

AI Technical Summary

Problems solved by technology

Grinding effect leather is to spray dye and color the surface of the leather, and then use sandpaper to grind the leather to obtain the grinding effect. The problem is that the color of the surface in the traditional process is called face color, and drum dyeing is required for surface dyeing. However, the process requires short dyeing time and accurate colors. The current process produces a large color difference between different batches of abrasive effect leather or between different skins of the same batch. It is difficult for garment factories to match colors, which affects the use. Moreover, due to the influence of the thickness and the surface charge of the skin, the degree of penetration of the dye varies greatly when dyeing the face, and the effect of the rubbing effect varies greatly.