Problem description:

I bought a leather coat. I'm not sure if it's genuine leather?

Analysis:

Please identify it according to the following methods:

Knowledge of genuine leather identification

1: Identify genuine leather

Touch by hand: that is, touch the leather surface with your hands, if it feels smooth, soft, plump and elastic, it is genuine leather; However, the general synthetic leather is stiff, stiff and soft.

At first glance, the real leather has clear hair and patterns, cattle hide has well-proportioned fine pores, yak skin has coarse and sparse pores, and goatskin has fish-scale pores.

smell: all genuine leather has the smell of leather; And artificial leather has a strong plastic smell.

Ignition: Tear off a little fiber from the back of real leather and artificial leather. After ignition, it is artificial leather that gives off a pungent smell and forms a pimple; What smells like hair and doesn't have a hard knot is genuine leather.

2, identify artificial leather and synthetic leather

With the above four basic identification methods, it is obvious to compare and identify artificial leather and synthetic leather. In addition, artificial leather and synthetic leather have the following characteristics:

1. When the leather is pressed with fingers, there are no obvious pore wrinkles. If there are wrinkles after pressing, they will not disappear naturally.

2. There are no pores on the leather surface, which is an important feature to identify the authenticity of leather.

3. Cut off the corners and burn them. They smell, but not the burnt smell of hair.

3. How to distinguish cow leather, pig leather, horse leather and sheep leather

Different types of leather have different characteristics and uses. For example, cow leather has fine surface and high strength, which is most suitable for making leather shoes and leather goods; Sheep leather is light, thin and soft, which is an ideal fabric for leather clothing. Pig leather has good air permeability and water vapor permeability.

Pig leather: The pores on the leather surface are round and thick, and extend obliquely into the leather. The pores are arranged in groups of three, and the leather surface presents many small triangular patterns.

Cattle leather: Cattle leather and buffalo leather are both called cow leather, but there are some differences between them. The pores on the surface of cattle leather are round and extend straight into the leather. The pores are tight and even, and the arrangement is irregular, like stars all over the sky. The pores on the surface of buffalo leather are thicker than those of cattle leather, and the number of pores is less than that of cattle leather, and the leather quality is slack, which is not as detailed and plump as that of cattle leather.

horse leather: the hair on the leather surface is also oval, slightly larger than the pores of cattle leather, and arranged regularly.

sheep leather: the pores on the grain surface of the leather are flat and round, and the pores are clear, and several of them form a group and are arranged in a fish scale shape.

Identification of leather quality

Cowhide can be divided into multiple layers (up to 8 layers). The outermost layer is the top layer, with the best quality, followed by the second layer, which is not as good as the top layer in strength, elasticity and air permeability. Car seats must use the first layer of leather. A kind of composite leather sold in the market now is a layer of adhesive film attached to the surface of the second layer of leather, which looks like the first layer of leather with exquisite surface. Some merchants pretend to be the first layer of leather to deceive users, so attention should be paid to identification.

from a professional point of view, the identification of leather should be judged from the smell, specific gravity, light resistance, migration resistance, atomization, thermal yellowing and friction resistance of automobile leather. Because most car owners don't have professional knowledge in this field, it is difficult to judge. You may wish to use the following simple methods for identification.

1. Labeling method

The back of the leather in the factory will be marked with the date of manufacture, the name and area of the leather factory, etc. Of course, the manufacturing date should not be too long, and the leather over 3 years should pay attention to whether there is mildew.

2. Smell method

Good leather should have no pungent smell after treatment, so too much solvent smell and paint smell is not good.

3. Heat-resistant method

It is best to ask the manufacturer for a small piece of leather and burn the sample with a cigarette end for about 2 ~ 3 seconds to avoid buying artificial leather products; Because of the large contact area, it takes a long time to burn with a lighter.

4. viewing method

under a magnifying glass of 3 times, you can see that the leather looks like the surface of the earth, with holes and holes, and its air permeability is good. Automobile leather needs special treatment such as wear resistance and light resistance, and the pores will be covered.

5. Cutting method

Cross-cut the leather with a blade, and the color of the leather must be consistent from the outer layer to the inner layer (it is normal that the outer layer is black and the inner layer is dark gray). Pay attention to whether there is abnormal color under the outer layer, so as to avoid buying second-hand leather with secondary dyeing or color change.

6. Wipe method

Wipe the leather surface with degreasing oil, and pay attention to whether there is fading and falling off, so as to avoid buying leather with secondary color change.

7. Method of origin

All countries in the world produce leather, but only Europe (Northern Europe, Italy, Austria and Germany, etc.) has a long history, and naturally its leather processing level will be much higher than that of low-grade Southeast Asian leather.

8. Certificate method

The leather in the factory has clear basic information such as the source, place of origin, trademark, leather measurement items and leather use authorization, and all of them are indispensable.

9. Guarantee method

This is the easiest way. When purchasing leather chairs, don't forget to ask the store whether there is a guarantee service card, so as to avoid buying inferior leather, to form the habit of regular maintenance, and to provide permanent after-sales maintenance service, which can be described as the benefits of killing three birds with one stone.

Identification methods of genuine skin and fake skin

1. Finger method; Press the skin with your fingers, and there will be fine wrinkles on the surface. When the finger is raised, the wrinkles disappear immediately from the dermis. Artificial leather and synthetic leather are wrinkle-free.

2, water method; Drop a little water on the leather, and then dry the water stain. It feels sticky and wet, and it is genuine leather.

3, perception method; Take the front of leather and observe it carefully with your eyes. There are pores in real leather, but there are no pores in artificial leather. Look at the reverse side of the leather, and look for the part that is not folded. If it is a base cloth, it must be artificial leather or synthetic leather.

Identification of trimmed leather, second-layer leather and regenerated leather

After the leather is folded in half and relaxed, the wrinkles disappear immediately in cowhide, but the wrinkles do not disappear in regenerated leather.