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The most complete and comprehensive leather classification worth collecting

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[Abstract]:
Accordingtotheuseoflifeleather,nationaldefenseleather,industrialandagriculturalleather,culturalsportinggoodsleather,accordingtothetanningmethodofchromiumtanningleather,tanningleather,oiltanningleather
    According to the use of life leather, national defense leather, industrial and agricultural leather, cultural sporting goods leather, according to the tanning method of chromium tanning leather, tanning leather, oil tanning leather, aldehyde tanning leather and combined tanning leather. In addition, it can also be divided into light leather and heavy leather.
Generally used for uppers, clothing, gloves and other leather, known as light leather, by area measurement, with thicker animal skins through plant tanning agent or combined tanning, used in leather shoes inside, outsole and industrial accessories, such as leather, by weight measurement. According to animal species are mainly pig leather, cow leather, sheep leather, horse leather, donkey leather and kangaroo leather, etc., there are a small amount of fish leather, reptile leather, amphibian leather, ostrich leather and so on.
    Cattle leather is also divided into cattle leather, buffalo leather, yak leather and yak leather; Sheep leather is divided into sheep leather and goat leather. According to the hierarchy of the first layer of leather and two layers of leather, including the first layer of leather with full-grain leather and shaving leather, two layers of leather and pig two layers of leather and cattle two layers of leather. In the main types of leather, cattle leather and sheep leather, its surface is flat, small hair eyes, internal structure is fine and compact, leather body has a good sense of fullness and elasticity, good physical properties.
    Therefore, excellent yellow cattle leather and sheep leather are generally used as high-grade products of leather, its price is the bulk of the leather in the higher category. According to leather and leather points: leather "leather" in the leather products market is a common word, people in order to distinguish synthetic leather and a habit of natural leather. In the consumer's concept, "dermis" also has a non-false meaning. Animal leather is a kind of natural leather, that is, we often say the dermis.is by the animal (raw skin) through the Tannery tanning processing, made of a variety of characteristics, strength, feel, color, pattern of leather materials, is the necessary materials for modern leather products. The processing process of dermal animal leather is very complicated, Finished leather is required to go through dozens of processes: raw skin----immersion----to the meat----skimming----hair removal----leaching alkali----expansion----ash----softening----leaching acid----TANNING----section----peeling----retanning----and----dyeing----refueling-----filling -----Dry----Finishing----finishing----finished leather.
    Its variety is also very many, according to the general common is sheep leather, cow leather, horse leather, snake leather, pig leather crocodile leather, etc., according to the performance can be divided into two layers of leather, full-grain leather, suede, modified face leather, film leather, composite leather, finishing section leather and so on.
    Among them, cowhide, sheepskin and Pigskin are the three main skins of raw materials used in tanning. Recycled skin will be a variety of animal phi Pi and dermal scraps crushed, the deployment of chemical raw materials processing and production. Its surface processing technology is the same as leather skin repair, embossing skin, which is characterized by leather edge is more neat, high utilization rate, cheap price; but the leather body is generally thicker, the strength is poor, only suitable for the production of affordable briefcase, pull bag, club sleeve and other shaping process products and affordable belt, its longitudinal section fibrous tissue uniform,
The solidification effect of liquid mixed fibers can be discerned. Artificial leather artificial leather is also called imitation leather or glue, PVC and PU and other artificial materials of the general name. It is in the textile cloth or non-woven base, by a variety of different formulations of PVC and PU and other foaming or laminating processing, can be based on different strength, wear resistance, cold resistance and color, luster, pattern patterns and other requirements of processing, with a wide variety of colors, good waterproof performance, margin neat,
High utilization rate and price relative to leather cheap characteristics. Artificial leather is one of the most popular materials in the early until now, and is widely used to make a variety of leather products, or parts of the dermis material. Its increasingly advanced production process, is being two layers of skin processing production widely used.
    Today, the leather-like artificial leather with the production of the market, its surface process is extremely substrate of the fibrous tissue, almost achieve the effect of the dermis, its price and domestic head skin price is comparable. Synthetic leather synthetic leather is a plastic product that simulates the composition and structure of natural leather and can be used as its substitute material. The surface is mainly polyurethane, the base material is polyester, cotton, polypropylene and other synthetic fibers made of non-woven fabric. Its positive and negative are very similar to leather, and has a certain degree of breathability.
    Features are beautiful luster, not easy to mold and moth, and more than ordinary artificial leather closer to natural leather. Synthetic leather variety, a variety of synthetic removal with synthetic fiber non-woven substrate and polyurethane microporous surface layer and other common characteristics, its non-woven fiber varieties and processing technology are different.
    Synthetic leather surface smooth, through the thickness, color and strength of uniform, in waterproof, acid and alkali resistance, microorganisms than natural leather.