Leather is the main material for making shoes. On the surface of making shoes, there are many raw materials for upper leather, including leather upper leather, PU upper leather, water-based PU upper leather, PVC upper leather and so on.
Leather upper leather generally has cowhide (head layer, two or three layers, suede), sheepskin (head layer, two layers, suede), pigskin (head layer, the second layer, suede), and horse skin,
Leather such as snakeskin is divided into yellow cowhide and buffalo leather; sheepskin is divided into goatskin and sheepskin. There are the head, second and third layers according to their level.
According to its type, tanned leather mainly includes fox tanned leather, goat tanned leather, rabbit fur leather, water leather, etc. The fox is divided into a blue fox, silver fox, and red fox;
Goats are divided into adult goats and juvenile goats. Rabbit fur is divided into grass yellow rabbits, rex rabbits, white rabbits, etc.;
The use of dermis is too harmful to animals, and the Environmental Protection Association does not mind making shoes with the dermis. However, PU leather, PVC leather will emit a lot of DMF harmful chemicals during production.
The use of PU leather protects animals, but it has a great impact on the human living environment. The extensive use of PU leather can cause damage to the human reproductive organs.
On October 27, 2017, the World Health Organization’s Cancer Research Institute identified DMF as a Class 2A carcinogen.
The European Union has determined that DMFa and DMFu are banned for the production of special substances for children under the age of 16.
The use of water-based PU leather is more environmentally friendly, sustainable, and more importantly environmentally friendly and harmless to the body.
Because water-based PU leather uses water instead of organic solvent in production, it achieves better physical properties than PU leather and has no harmful emissions.
The glossy leather in leather is used in many leather products because of the good tensile strength, dirt resistance, abrasion resistance, and good breathability.
The suede skin is not only elegant and generous, but also has good air permeability. However, it is not easy to be dirty and not well maintained, especially in a bad environment.
Suede shoes are easy to inhale dust, and the fluff will fall after encountering water.
One of the leathers is called a modified leather, and the modified leather is processed and finished on the leather surface, and it can be pressed with different textures.
Some coated leathers are thick, wear-resistant and breathable. Nowadays, there are many kinds of leather upper leather, and the most animal-like leather is applied.
Generally, there are snakes, leopards, zebras and so on. Hyatt’s water-based leather uppers are well developed and water-based PU leather is more environmentally friendly.
