What material is the bark of the tree paste made of?

Tree paste skin is leather tanned with vegetable tanning agent. Leather tanned with vegetable tanning agent (tannic acid) extracted from plants is called "vegetable tanning leather". It contains no substances harmful to human body, and is a kind of green leather that can be used for direct contact with skin.

Leather tanned by vegetable tanning agent (tannic acid) has strong water absorption, high plasticity and easy molding, which is very suitable for carving and leather molding. Therefore, in the initial application field, it was mainly used for making leather handicrafts.

Because it is harmless to human body, it is gradually applied to leather products that can be in direct contact with human body. For example: handbags, backpacks, saddles, insoles, shoes, hats, belts and other leather products that can directly contact the human body.

Extended data

Among them, the extract obtained by extracting tannin from vegetable tanning materials with water, and the solid block or powder obtained by further treatment is called tannin extract. Therefore, vegetable tanning with vegetable tanning agent is also called tannin extract and tannin extract. Bark, wood, shells and leaves in the plant kingdom are all raw materials of tannin extract.

Leather tanned by vegetable tanning materials, so some people commonly call it tree cream skin, while others write it as tree lamb skin.

The characteristics of vegetable tanned leather are: the tanned and fatliquored leather is soft, the fiber structure is compact, the extensibility is small, the formability is good, the board surface is full and elastic, there is no greasy feeling, the grain surface and suede surface of the leather are shiny, it is easy to soften when absorbing water, and it is easy to set. The color ranges from light pink to light brown, which is most suitable for leather carving.

Vegetable tanned leather includes: sole leather (inner and outer soles), industrial leather, accessory leather, car cushion leather, luggage leather, belt leather (belt leather is commonly used by many netizens), cushion leather and so on.

With the development of modern industrial technology and people's in-depth understanding of the concept of environmental protection, the requirements of international leather standards in environmental protection are becoming more and more strict. Under this background, vegetable tanning has become one of the main materials of fashion products in the field of leather products.