Vegetable tanning is the earliest tanning method, which uses tannin extract (the main component is tannin) extracted from plants to tanning. It is the only environment-friendly leather in tanning. Even if it burns, it will not release toxic substances.
Now some pet food is made of this kind of broken leather. This kind of leather is thick, tough and easy to absorb liquid. After absorbing water, it is easy to shape three dimensionally. Its natural color is the light brown of tannin extract itself. After use, it will be gradually deepened by oxidation, sunlight and absorption of body fluids (long time sunlight will make the leather dark Brown). It is suitable for dyeing with basic dyes (i.e. alkaline dyes).
This kind of leather is hard and thick. It is often used in military products, mechanical accessories, basketball, belts, soles, suitcases and leather sculpture. Small flexibility, water absorption, easy to soften, plasticity, easy to shape, color from natural light meat pink to light brown, most suitable for leather carving crafts. The effect of color maintenance of primary vegetable tanned leather varies with leather producing area, tanning method, use frequency and proper maintenance, which is also the charm of vegetable tanned leather.
