How to identify genuine leather products? How to identify the dermis? Shaoguan Jialijia Daily Chemical Co., Ltd. Liang Xiwu 1, eye: the pores and dermatoglyphics of the dermis are obvious, the same skin is irregular, but the fake skin has no pores, and the pores and dermatoglyphics of the fake skin are very regular. Look at the back of the leather without folding. If it's Kibu, it must be fake leather. Moreover, the leather has a soft luster and the fake leather is bright. Look at the sign of genuine leather: leather goods from regular manufacturers generally have genuine leather signs, but the imitation leather brand hanging on leather goods is not equal to "genuine leather signs". The registered trademark of the genuine leather logo is an artistically deformed circular drum pattern, which consists of a whole sheep, a diagonal and a leather shape. In the center of the pattern, there are three English abbreviations "GLP" for leather products. The main color of the pattern is black characters on a white background, and only three letters are red. Anti-counterfeiting identification: when the front of the sign is irradiated by ultraviolet rays, the words "genuine leather" and "HQ" will appear in red, and the numbers below the back of the sign will change from light red to yellow under ultraviolet rays. Check whether the goods have trademarks, addresses, factory names and certificates. But there is no genuine leather logo, no trademark, etc. Does not mean fake leather. Please note: if the leather is as bright as a mirror, it may be refurbished leather. If it's not refurbished leather, it doesn't have many breathable hair eyes. Its use function is actually similar to that of fake leather, which is inferior leather. Attachment: The leather features of all kinds of skins are as follows: pigskin, with rough grain surface, generally zigzag arrangement of pores in groups of three, and large pores, especially in the neck, with trumpet-shaped outlet of pores, obvious nipple protrusion and deep groove; Cowhide, with fine grain surface, fine and dense pores, small nipple on grain surface, inconspicuous protrusion and few wrinkles except neck and abdomen; Yak skin has fine grain surface and fine pores, and the fineness of grain surface is very close to that of cowhide, but there are many wrinkles in neck and abdomen. Buffalo hide, with rough grain surface, coarse pores, thick skin, obvious nipple protrusion on grain surface, many and deep wrinkles and particularly rough patterns; Goatskin, with fine grain surface, 5-6 pores arranged in waves, slightly thicker than sheepskin and yellow cowhide, but much thinner than pigskin, with corrugated nipples more obvious than sheepskin and yellow cowhide, but far less obvious than pigskin and buffalo hide, and basically no wrinkles on grain surface; Sheepskin, with fine grain surface, fine pores, small nipples, inconspicuous protrusions, less grain surface wrinkles and finer grain surface than goatskin; Horse skin, with oval pores, is slightly larger and more regular than that of cattle. 2. Touch by hand: When touched by hand, the leather surface feels smooth, soft, plump and elastic, while artificial leather is rough, stiff and poor in softness. 3. Press by hand: Press the skin with the fingertips of your fingers. There are fine lines in the dermis and no wrinkles in the fake skin. 4. Smell: genuine leather has a leather smell, while fake leather has a strong irritating plastic smell. 5, burning: this move is the most accurate. When burned with fire, the dermis is not hard and has the smell of burning hair, while the fake leather has a pungent smell when burned. 6. For smooth leather, you can also use Jialijia leather softening care agent for testing. Jialijia leather softening care agent is leather imitation oil, which is a healthy product and does not contain any volatile solvents (solvents are generally toxic). Only leather with good pores can be absorbed. If it is high-quality leather, it will dry within 5 hours and one day at the longest after being coated with the beauty queen, while artificial leather will not dry for several days without pores. The dermis absorbed by Ricard is bright, plump and soft. But poor skin without pores is similar to fake skin, but it is also bright. How to choose a leather sofa? When buying a leather sofa, no matter what brand it is, you should consider the following points: 1. Choose color: according to your own aesthetic point of view and family environment conditions, choose the color that has upward power to your heart. However, if you have children at home, or if you want to have children when you get married, it is best to choose black, or pig liver black, rather than light white; 2. Determine the price of sofa: choose according to your own economic situation and realistic conditions. For example, if the children at home are 2~3 years old, you should not choose an expensive leather sofa at this time. It is best to consider using a leather sofa that will be disconnected in 3~5 years; 3. Measure the size of your living room and door. This step can effectively manage the living room space and effectively prevent the sofa from entering the home. 4. Try to sit: If it's not for the elderly, sitting on it will make you feel backward. You must not buy it. This kind of sofa will make people form bad habits, which is not conducive to keeping people straight and full of vitality, especially if there are children at home. Please choose a leather sofa that makes people full of upward vitality. 5. Look (1) at the leather sofa. It is best to choose cowhide sofa. Cowhide is superior to cowhide, and leather sofas are divided into full leather and half leather. A full leather sofa needs 10 cowhide, which is breathable and environmentally friendly, but the price is higher; Half-leather sofa only uses cowhide in the contact part of human body, and other parts use PU leather or artificial leather, which is economical and practical. It is suggested that citizens choose half leather sofa to save social resources. The leather of leather sofa is divided into three layers: the first layer, the second layer and the third layer, with the first layer being the best. High-quality leather must be environment-friendly, with good pore permeability, soft, plump and moist, with no scar on the surface, firm coloring, difficult fading, high mechanical strength such as tear strength, tensile strength and grain surface cracking strength, and no obvious wrinkles after sitting; Please pay special attention: if the leather surface is as bright as a mirror, it may be refurbished leather, and most of this leather will not have many breathable hair eyes, so it is similar to fake leather. Identification of genuine leather, please read my How to Identify Genuine Leather Products? How to identify dermis? ”； (2) Look at the quality of the picture frame. Shake the leather sofa back and forth, left and right repeatedly to judge whether the frame is firm. Then apply to the clerk to check the interior of the leather sofa and uncover the bottom cloth. Good quality wooden frames are free from decay, moth, scar and bark. The joints of wooden frames are tenoned with mortises or notches, and then glued firmly, rather than nailed firmly. (3) Looking at the inner cushion, the cushion of high-grade leather sofa has good resilience and comfortable sitting feeling. The bottom surface of the seat and backrest mostly adopts nylon belt and snake spring, and high elastic foam, rubber-sprayed cotton and light foam are laminated on it. Most mid-range leather sofas use rubber-pressed fiberboard as the seat back floor, with medium-density foam and rubber-sprayed cotton laminated on it, which makes the sitting feeling hard and the memory elasticity slightly poor. Generally, the cushion is more than 30 kg/m3 and the cushion is more than 25 kg/m3. High-grade leather sofas are also equipped with vertical springs in the cushion, which makes the leather sofas have high resilience and anti-aging performance. 6. Finally, look at the brand, distribution unit and after-sales service of leather sofa. Why does leather harden after polishing care? Due to the limitation of science and technology, most leather cleaning and care products on the market, including brand-name products, will harden and crack leather if used too much. If leather is absorbed directly into leather, it will harden faster. Therefore, leather manufacturers treat leather pores intentionally or unintentionally to prevent leather from easily absorbing too many things during use, thus prolonging the service life of leather. Experienced leather goods distribution manager, after selling leather goods, usually tells customers not to use XX products (famous brands) for care. Why does a good and expensive leather coat harden after polishing and nursing? First, do a conscious simulation experiment: imagine a thin plastic bag with many holes and a sponge inside. At this time, the bag is soft. But the bag filled with cement slurry must be hard when it is dry. This is the principle of leather polishing and hardening. The better and more expensive leather clothing, the better its pores and breathability, so the more leather polishing care agents you eat during polishing care, the easier it is to harden. Because the leather garment can't be operated, the hardened leather garment can't recover its original softness after using Jialijia leather softening care agent, but it can also prolong the life of leather. However, there are also many smooth leather garments, and the bright film on them will not harden. This is because the pores are not easy to absorb foreign bodies, and of course they are a little hardened, but they are not as obvious as good leather clothes.