Shaped tanning method of leather

Abstract

The invention relates the leather shaped tanning method, comprising the following steps: using hogskin, cowhide and goatskin as raw materials, treating them, making the grain of the skins adhibit to the metal plate or mechanically resistant material plate, scraping the flesh side with scratch board, on the flesh side putting the material which can make tanning liquor flow, on the material putting metal plate or mechanically resistant material plate, forcing on the plate, putting them into tanning liquor, making them move, heating, and getting the product.

Description

technical field

[0001] The invention relates to the technical field of leather industrial production, in particular to a leather tanning method. Background technique

[0002] At present, the tanning of leather generally adopts the drum tanning method. The process is to put the bare hide and tanning liquor after a series of pre-tanning preparation processes together into the drum for rotation, and the rotation of the drum plays the role of stirring the bare hide and tanning liquor, and makes the bare hide suffer to a certain degree. mechanical action to complete the tanning process. Because during the rotation of the drum, the bare hide is continuously stretched, squeezed, bent and other mechanical deformations, and there is also a lot of friction between the hides, all these functions promote the penetration of the tanning solution into the hide. At the same time, it will inevitably cause a certain degree of damage to the fibers of the leather. The specific manifestations ...