How to Tell the Dermis How to Identify the Dermis

The difference between leather and leather is not the price, the most obvious point is that you can touch the stitching of the leather shoes horizontally with your hands, the stitches of the leather, the thread is bulging out, and the stitches of the leather, the thread is concave, or use a lighter, the flame is 3 cm away from the leather shoes, bake for 1-2 seconds, you should be able to smell the smell of burning hair with your nose, and the leather will be a kind of chemical raw material taste, this method will not cause damage to the leather shoes, third, take out the insoles, look at the stitches inside the shoes, It should be possible to clearly see the material of the fabric, but this method is not universal, and the process of stitching within each brand is different.

1.Method 1, from the sense of smell, the dermis smells of animal fat, and the imitation leather smells of plastic. 2.

Method 2, from the tactile sense, the real leather is relatively smooth and has no cold feeling in the low temperature environment, while the artificial leather has a cold feeling in the low temperature environment and is relatively stiff and jerky; Dermal skin has better elasticity, and there is a difference between transverse and longitudinal directions, while artificial leather is the opposite. 3.Method 3: From a visual point of view, the texture of the dermis is uneven while the artificial leather is particularly regular; The reverse side of genuine leather has no base and is plush, while the reverse side of artificial leather has a cloth base base; Genuine leather has tiny pores, while artificial leather does not; The cut surface of genuine leather is composed of irregular fibers and there is no change in the upper and lower layers, while the change of layer by layer can be seen in artificial leather.

(1) Appearance identification: the appearance of dermal glossy clothing has obvious pores and certain rules, but the regularity is not very strong; The thickness of the surface is often not very consistent, and some can reveal the scars of the animal skin itself; For the inconspicuous parts of the garment, such as the collar, under the hood, under the armpits, etc., use leather of poor quality that is significantly different from the main part of the body (of course, special high-end leather clothing may be excluded). The appearance of fake leather clothing is not obvious, but it is very regular; The surface thickness is uniform and consistent, and there is no scarring; The material of the unexposed part of the garment is the same as that of the front.

For suede clothing, the uneven appearance texture and the difference in the length of the fluff are mostly genuine leather clothing, and vice versa may be fake leather clothing.

2) Cross-section and leather identification: Get a piece of clothing, and think of finding the cross-section and reverse side of its leather to help identify its authenticity. The cross-section of the leather garment is irregular fibrous, and when the nail picks at the cross-section, it will appear fluffy and thickened.

The end face of the fake leather is regular and has woven fibers, which is relatively rigid. From the reverse side, the inside of the dermis is uneven, non-woven fibers. Most of the fake leather has a textile cloth base on the reverse side, and even if there is no textile cloth line, the texture of the base is very uniform.

3) Feel identification: Leather clothing feels comfortable, plump, soft and has a certain sense of warmth. Fake leather clothing feels close to plastic, plump, poor softness, and no warmth.

4) Water absorption identification: the surface of the dermis has better water absorption, while the fake leather has better water resistance. You can dip your hand in water, wipe it on the surface of the garment, and observe its water absorption, such as good water absorption, for leather; If the water absorption is poor or does not absorb water at all, most of them are fake skins.

The first and second of the recommended answers are good! If you don't copy and paste, you're a person who really knows skin! Usually you only need to master the second one!

Cut the leather and look at the cross-section, if the cross-section has a sand net or something like that, it is fake leather, if not, it is genuine leather, and people who have learned molds know it.

The pores and skin lines of the dermis are obvious, and the same skin has no regularity, while the fake skin has no pores, and the pores and skin lines of the fake skin are very regular. Look at the part that is not folded on the reverse side of the skin, if it is the base cloth, it must be fake leather. And the gloss of the real leather is soft, and the fake leather is brighter.

In fact, there are many ways to distinguish genuine leather fake leather, you can refer to the "Bag Academy" column of the Chinese brand bag portal, which introduces five simple methods to identify genuine leather.

You're not a professional and don't want to mislead you. Even for me, after making the finished product, some materials have to be looked at for a long time and can't even be distinguished. First of all, good genuine leather (such as full-grain calfskin, natural fall, grained nappa, etc.) they are only dyed and surface color repaired, without paint covers, and their textures are naturally formed, so there will always be small differences or even flaws in the local area (excluding the later scars of the finished product), if it is not professional, I am afraid it is difficult to see.

The texture of artificial leather is pressed out, and its texture can be said to be perfect, and it is almost impossible to have flaws, otherwise it is a substandard product. "Ingenuity" is not actually "heavenly". If you want to talk about the difference in feel and smell, artificial leather can be hidden from the world, and I don't have that confidence anyway.

If you can confirm that it is dermis through the above methods, it must be dermis. Secondly, if it is not a grain leather, but a heavier layer of paint skin, and even a layer of metal or plastic film is obviously on the surface, it is more difficult to identify, some of the first layer of leather because of surface defects or scars, after patching and embossing, the texture will be almost perfect, and some two layers of leather (cattle two layers) or pigs, cattle and sheep head layer after the film or film, there will be a layer of metal or plastic film on the surface, mainly to decorate and improve the utilization rate. These artificial leathers can do it, so it is difficult for non-professionals to tell whether it is genuine leather or not.

The easiest way to do this is to look at the reverse or cross-section of the leather. The cross-section of the leather is tight and not foamy, and the reverse fibers resemble the chicken silk after teeth picking (hehe, this metaphor is very disgusting) or sack silk, and some of the reverse fibers are not visible because they are pressed too hard, and they will appear when scraped with their fingernails, and the thickness of different types of leather is different. The fibers of artificial leather are like hair or no fibers.

Some shoes and bags, which have no edging and no edge oil, are easy to see the cross-section and bottom, which is easy to identify, and 99% are leather. The problem is that after the finished product is made, it is generally curled, which makes it difficult to identify. That's all, I hope it helps.

Automobile leather inspection has the following items:

Color, Prohibited Restricted Materials, Dangerous Goods to Avoid, Flame Retardant, Emanation Characteristics - Formaldehyde Volatilization, Emanation Characteristics - Odor, Emanation Characteristics - Atomization Test, Emanation Characteristics - Total Carbon Volatilization, Emanation Characteristics - Bag Method VOC, Thickness, Weight, Tensile Strength, Elongation, Tear Strength, Stitch Strength, Elongation, Abrasion Resistance, Low Temperature Cracking, Water Resistance, Light Fastness, Heat Aging, Rubbing Fastness, Grease Content, pH Value, Adhesion, Stain Resistance, Hardness, Chromium Content, Air Permeability, Anti-reagent performance, shrinkage performance, etc.

Shanghai Qijin Testing Technology **** has been accredited by China Conformity Assessment Accreditation Service (CNAS) Accreditation Laboratory and Metrology Accreditation (CMA) Laboratory, and is committed to the testing and research and development of experimental projects in the automotive field. It has advanced testing equipment and professional technical and management personnel covering environmental reliability, physical materials, new energy motors, mechanical properties, electronic appliances, VOC, ELV and other fields. It has successively won the special assessment certificates for the performance, environmental reliability, light and weather resistance of non-metallic materials such as high-tech enterprises, Ford Motor, SAIC Passenger Vehicle, SAIC Volkswagen, SAIC-GM-Wuling, SAIC Maxus, Yanfeng Automobile Trims, etc. **：