Environmentally Friendly And High Value-Added Microfiber Synthetic Leather

There are two kinds of fibers used in artificial leather, superfine fiber and ordinary fiber. The difference between them is linear density -- the linear density of superfine fiber is less than 0.55dtex, and the linear density of ordinary fiber is higher than 1.1dtex.

Microfiber synthetic leather was developed by Japanese experts using composite spinning technology more than 40 years ago. It has a similar microstructure to natural leather, and overcomes the disadvantages of poor shape, poor uniformity of thickness, shrinkage and hardening of water, and moldy moisture.

The advanced superfine artificial leather tries to surpass the real leather in performance, and its price is even more expensive than the genuine leather.

Leather has always been popular with people because of its excellent hygroscopicity and excellent dehumidification function, which can reduce the peculiar smell produced in shoes and improve the microclimate in shoes, so that it has the comfort of wearing and meets the health requirements of the human body.

Comfort (hydrophilicity, sweat absorption, elasticity, breathability, moisture permeability, warmth retention) is the most basic requirement of middle and high grade shoes. Therefore, as shoe material, it must have certain hygroscopicity to ensure that sweat is evenly distributed in the process of wearing.

Hygroscopicity is a basic indicator of fiber properties.

Most of the synthetic fibers lack or do not have enough hygroscopic affinity, so the hygroscopicity is poor.

However, due to the limitation of natural conditions, the world's natural leather will not increase greatly, and the microfiber synthetic leather can not only supplement the shortage of natural leather in quantity, but also has more and more properties than natural leather, which has been applied in more and more fields.

In fact, the hygroscopic property of microfiber synthetic leather is the best among all synthetic leather. According to the data, the permeable steam of natural leather is about 800mg/ (250px2.24h), while the moisture permeability of superfine fiber cloth is about 400mg/ (250px2.24h). This is mainly due to the more hydrophilic groups of collagen fibers in natural leather than those in microfiber.

Therefore, the application of natural leather processing technology to the production of microfiber synthetic leather is a promising investment project that is highly valued by experts.

Compared with the natural leather, the superfine fiber base cloth has smaller density of woven fabric and loosely woven base cloth, resulting in its thin handle.

According to the analysis of histological sections, the single fiber of the superfine fiber base is linear columnar, and forms a net solid structure through the intersecting of branches, while the single fiber of natural leather is curved and linear, forming a net solid structure through mutual division.

Therefore, compared with the leather made from natural leather, the superfine fiber base cloth has a large modulus of elasticity and is not easy to embossing.

Will natural

The processing technology is applied to the process of superfine fiber synthetic leather, which solves the problem that the microfiber synthetic leather is thin, loose, poor handle and easy to crease when it is used, so that it can basically reach the true leather properties.

Imitation of synthetic leather produced from Microfiber

The price can be increased by about 30%.

With the increasingly stringent requirements of environmental protection, the problem of leather pollution has attracted more and more attention of the society. The production process of microfiber synthetic leather has no solid waste. Compared with the processing of natural leather, the consumption of water in the whole finishing process is very low.

The dosage is very small, the process design is reasonable, the BOD and COD value of the waste water is very low, which can meet the requirements of clean production and reduce the difficulty of sewage treatment.

Both the appearance and inner structure are close to natural leather.

Microfiber synthetic leather is a product of continuous automatic production, with high production efficiency and stable product quality.

The processing technology of natural leather for superfine fiber synthetic leather processing must be cut into blocks, and the chemical material can be penetrated into the superfine fiber by means of the mechanical function of the drum, which increases the complexity of the operation.

Therefore, we must further study this processing method to find a suitable method for continuous production.

In order to improve the handle of microfiber synthetic leather, chrome powder was used in processing, and general acid dyes were used to give the color of synthetic leather popular, but it added an obstacle to the export of products.

Because there is a certain gap between the microfiber synthetic leather and the genuine leather's feel performance, that is, the superfine fiber synthetic leather has the problem of low moisture permeability, so people never stop exploring the leather method of synthetic leather.