NEWS

Water-based PU Leather: Eco-friendly upgrade from traditional PU leather

In recent years, the textile and leather industries have increasingly shifted towards sustainability and environmental friendliness. This transformation is particularly evident in the transition from traditional PU leather to solvent-free, water-based PU leather. This article explores the unique characteristics and advantages of water-based PU leather, emphasizing its crucial role in enhancing environmental sustainability and product performance.

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Natural leather is a necessary upper material for high-end leather shoes due to its flexibility, breathability, abrasion resistance, folding resistance, and aesthetics, as well as its easy modification and modeling performance.

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China is a major country in the production and consumption of artificial leather and synthetic leather in the world, and has developed to account for 80% of the global market share, ranking first in the world. However, at present, China's production capacity of microfiber leather is about 120 million square meters, accounting for only 3% of the total synthetic leather, which is far from Japan's 85% to 90% proportion of superfine fiber artificial leather. It is understood that at present, the manufacturing technology of "ultra fiber leather" in China has matured. The ultra fiber leather enterprises represented by Shanghai Huafeng, Shandong Tongda, Yantai Wanhua, Wuxi Shuangxiang, Zhejiang Hexin, etc., all adopt the two-step production process of staple fiber+loosening, carding+needling to produce ultra fiber leather.

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What is a two component spunbonded spunlaced nonwoven microfiber leather substrate? In fact, the production process of bicomponent superfine fiber spunbonded spunlaced nonwoven fabric is a combination of filament spunbonded and spunlaced nonwoven fabric. Two types of high polymer PET/PA6 are produced with a certain composite ratio through conjugated spinning, air flow drafting, web laying, spunlaced, drying, calendering, and winding, resulting in a new type of nonwoven fabric

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In 2008, the first domestic two-component hollow orange petal type superfine fiber spunbonded nonwoven production line designed and manufactured by Dalian Hualun Chemical Fiber Engineering Co., Ltd. was successfully launched in Ji'an, Jiangxi.

Main manufacturing processes of leather goods

Binding edge - Various edge bones used to form a foil or enhance the shape of a handbag. "The side bones have non core skin bones, genuine skin bones with rubber core, cotton core, spring or steel wire inner core, artificial material side bones, and rubber bones without wrapping material.".

China's leather goods manufacturing urgently needs transformation

In recent years, every leather goods factory has been under the same pressure on labor costs. The careful boss of B Leather Factory has been paying close attention to the production process of workers in the workshop in recent years. He has found that after making more reasonable adjustments to the human resource structure, the improvement in the profit margin of each product will be immediately apparent.

Classification of leather types and production processes

The main processes include soaking, meat removal, hair removal, liming, degreasing, softening, and pickling. The main role of the preparation stage is to remove some ingredients from the raw leather that are not beneficial to tanning, such as fur, blood stains, fat, and some soluble proteins. The collagen fibers of the original skin are loosened and softened to facilitate subsequent processing.

What are the usual types of leather?

Leather can be divided into: shoe upper leather, clothing leather, shoe lining leather, sofa leather, glove leather, etc.

What are the types of sheep fur in China?

There are many types of sheep fur in China, which can be divided into four types according to production performance: fine wool sheep, semi fine wool sheep, coarse wool sheep, and lambskin sheep. The fine wool sheep are represented by Xinjiang fine wool sheep, Northeast fine wool sheep, and Inner Mongolia fine wool sheep, the semi fine wool sheep is represented by Han sheep, the coarse wool sheep is represented by Mongolian sheep and Kazakh sheep, and the lamb skin sheep is represented by Tan sheep and Hu sheep. According to the use and wool type characteristics of sheep fur, sheep fur is generally divided into three categories: native sheep fur, improved sheep fur, and hybrid sheep fur.

How is the odor of leather products formed?

Leather is made from animal skin through complex physical and chemical processes. During the tanning process, various acids and alkalis are added to treat the leather, various fatliquoring agents are added for fatliquoring, various fillers are used for filling, and finally, finishing agents are used for finishing. Due to the smell inherent in the raw leather and various leather chemical materials used in the tanning process, the unique smell of leather is formed.