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Anonymous users2024-01-241. The meaning of dermis.
"Genuine leather" is a common word in the leather goods market, and it is a customary term for natural leather to distinguish it from synthetic leather. In the consumer's mind, "leather" also has a non-false meaning. It is mainly processed from the skins of animals.
There are many types of genuine leather, variety, different structures, different qualities, and very different prices. Therefore, genuine leather is both a collective term for all natural leathers and a vague identifier in the commodity market.
From a physiological point of view, any animal skin has hair, epidermis and dermal parts. Because the dermis contains small reticulated fiber bundles, they are both quite strong and breathable.
The epidermis is located under the hair, clinging to the top of the dermis and consists of an arrangement of epidermal cells of different shapes. The thickness of the epidermis varies from animal to animal, for example, the thickness of the epidermis of a cowhide is the total thickness; sheep and goatskin 2 3%; Pigskin, on the other hand, is 2 5%. The dermis is located under the epidermis, between the epidermis and the subcutaneous tissue, and is the main part of the raw hide.
Its weight or thickness accounts for more than 90% of the hide.
1. How to identify the dermis.
Hand touch: that is, touch the leather surface with your hands, if there is a smooth, soft, plump, elastic feeling is leather; However, the general artificial synthetic leather surface is astringent, rigid and has poor softness.
See: the real leather surface has clearer pores and patterns, the yellow cowhide has more symmetrical fine pores, the yak leather has coarser and sparse pores, and the goatskin has fish scale-like pores.
Smell: All genuine leather has the smell of leather; Artificial leather has a strong pungent plastic smell.
Ignition: Tear off a little fiber from the back of real leather and artificial leather, after ignition, where it emits a pungent smell and forms a pimple, it is artificial leather; Anything that smells like hair and doesn't have hard bumps is dermis.
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 also have the following characteristics:
1. Press the leather surface with your fingers, there are no obvious pore wrinkles, if there are wrinkles after pressing, it will not disappear obviously.
2. There are no pores on the leather surface, which is an important feature to distinguish the authenticity of leather.
3. Cut off the corners and burn, smelly, but not the burnt smell of hair.
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Anonymous users2024-01-23Roast over the fire to see if there are no traces of baking, don't take a long time, about 30 seconds.
2: The taste of genuine leather is very special. A bit of an animal smell.
Yes, the texture of solid wood furniture is clear and there is no peculiar smell, and the color looks very natural to be log color, while the fake peculiar smell is poor in color and luster, and the texture is not obvious.
To identify the authenticity of mahogany furniture, it is necessary to start from the attributes of the wood, such as weight, texture, pattern, smell, etc. Patterns and smells can be compared with water in cross-sections, and densities. It can also be judged by the color of the sawdust leachate.
True or fake, whether there are auxiliary materials, how about the style, the specification is ten centimeters, whether there is carving, size, etc. Just based on [the specification is 10 centimeters], to estimate, how to estimate?
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At present, the big brands are: Gujia, Left and Right, Red Apple, Chivas Regal ...The dermis has natural skin wrinkles, has a dermal smell, and has a sweat-absorbing function (with natural pores) on hot days.