Leather obtained from animal skins as a natural raw material is called "leather". Leather can be used to make leather clothes, bags, shoes, boots, belts, sofas and other products, making our life more colorful. What are characteristics of skin? What should we know about skin to maximize skin effect? What should I pay attention to when using leather? Next, we will present in detail all aspects of knowledge about skin and explain in detail essence.
The difference between skin and skin
Hide, as name suggests, refers to skin of an animal. Corresponding to "leather", it is material used to make leather bags, leather shoes, and other leather goods. That is, what is obtained after processing skins of animals is skin. The word "skin" is a hieroglyph that mimics open state of skin of cattle and other animals, and has meaning of tension change.
The skin can be said to be a living creature, or rather skin is part of dead body of an animal, if skin is left unattended, it will rot. But even if you dry hide so it doesn't rot, it will just become hard and unusable. Therefore, it is necessary to perform mild processing and anti-corrosion treatment of leather before leather can be made into leather. This process is called tanning.
Skin advantages and disadvantages
Among raw materials used to make clothes, bags, etc., what is difference between leather and other materials? Let's look at advantages and disadvantages of skin.
①High class good feeling, aesthetic sense and touch
Being a natural material, leather has a soft texture, beautiful surface and pleasant to touch, and can be used as an excellent raw material for production of products that can be worn. ②Water vapor permeabilitySkin has several layers of fibers with a complex structure, but there are small pores between fibers, so skin can moderately absorb moisture and moderately release moisture.
③Elasticity, extensibility and plasticityDifferent animals have different body shape and structure, so skin of different animals will also be different. However, when animal skin is used as raw material, it has same or similar elasticity and extensibility. The external force can deform skin, but skin has strong plasticity, and skin can change according to shape of body when wearing leather products on body. ④The incision is not easy to openLeather fiber is thin, structure is complex, connection is tight, so skin incision is not easy to open, which saves people time and energy to repair incision.
⑤Has fire resistance and heat resistanceLeather is difficult to dissolve and burn at high temperature, so skin has good fire resistanceyu and is called a safe raw material.
①Individual differences are greatThe quality and performance of leather is unstable, that is, there are differences between each piece of leather, as well as quality and performance of various parts of each. piece of leather may be different. Therefore, partial quality and poor performance of leather products will also cause people to be dissatisfied with leather products.
②Not waterproofWhen skin is soaked in water, color, feel and shape change. Soaking leather in water also reduces heat resistance of leather. ③Poor color fastnessAfter dyeing leather, color fastness is poor, that is, after dyeing leather, it is easy to cause discoloration and discoloration. ④Easy to mildewGaps between leather fibers can easily get in and out or stay wet, and moisture can easily cause mold to grow. When there is mold on skin, it is difficult to completely remove it. ⑤ Have a unique smellBecause oils, dyes, pigments and other chemicals are used in leather tanning process, leather will have a unique smell. The use of some technology in tanning process can prevent odors, which is why scented leathers also exist. Therefore, smell of skin can not be attributed to shortcomings.