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Oskarchinesestationery  
#1 Posted : Thursday, June 18, 2020 1:45:00 PM(UTC)
Oskarchinesestationery

Rank: Newbie

Groups: Registered
Joined: 6/18/2020(UTC)
Posts: 1
China
Location: taizhou

Customized notebooks generally choose materials such as PVC, PU, ​​artificial leather, leather, Italian imported color-changing leather, medium and high-precision leather, and for customized notebooks, how to choose appropriate materials to make notebooks is crucial. So how to choose the most suitable material?


First of all, we must learn to identify materials. When identifying, the materials should be checked first to determine the type of leather. If using "leather" grain surface layer unmodified, with original natural characteristics of leather: cowhide pores and small broken eyes, irregular and more uniform; goat skin pores rows are "tile-shaped"; pigskin pile of three holes , Distributed by character.


The yellow cowhide tissue has fine fibers, the buffalo is rough, and the pores and eyes are large. If the grain surface layer is modified to lose its original characteristics, it should be carefully classified and identified according to the processing technology. The aniline leather is called aniline. It is characterized by crystal bright surface. The light is very bright, not dazzling and has no sense of plastic. Natural leather is cooked into leather. The cowhide is generally 5 to 6mm thick. The surface layer is a grain surface layer. The tissue fibers are fine and compact, smooth and beautiful, and the strength and wear resistance are good. The inner layer is a suede layer with thick fibers and large gaps. The surface is fluffy. The top layer leather is smoother and flatter than the second layer leather, and the second layer leather is slightly rough. The coating of the two-layer leather, the transfer film or the film can make the surface not rough, but the transfer film leather has poor low temperature resistance and is prone to wrinkling at low temperatures. The two-layer leather of cowhide is flat, without obvious defects after embossing, and the two-layer leather of pigskin is often seen with three piles of pore eyes, where the gloss is dark. When distinguishing between shaved leather and frontal leather, it should be noted that the shaved leather destroys the original grain surface layer and then presses the pattern. The pattern type can imitate cattle, sheep, pigskin, etc., but the pattern has no pores and the pattern is floating. On the surface of the skin, the frontal pores of the leather are present, which can be recognized by careful observation.


Artificial leather is coated with a layer of organic material on the base of the cloth, which is divided into thin (imitation sheep leather) and thick (coated with foamed organic material, and then pressed with patterns). Synthetic leather is made by pressing organic fibers and adding decorative laminate flowers. Reclaimed leather is to grind the leather residue and leather fiber, and bond it with a high pressure adhesive to form a sheet, and then pass the leather machine to the required thickness, and then finish it, so that it has certain leather characteristics and is widely used in luggage. Leather goods, a small amount used to make shoes. When distinguishing between genuine leather and artificial materials, look at the appearance first. The genuine leather has no base, and the artificial material has a base. After touching it by hand, the plastic material of the artificial material is very strong, and the gloss is bright. In winter, there is a cold feeling in the hand, and there is no cold feeling in the smooth leather. Pressing the soft part of the finished product with the thumb, there will be many small and even patterns around the dermis of the thumb. The thumb is lifted and the pattern disappears; while the artificial material may not have a pattern, or there may be a large grain. The thumb is lifted and the pattern does not disappear , Indicating that the grain surface layer on the surface of the material and the underlying mesh layer have been detached. You can also observe the cross section to distinguish between real leather and artificial leather. The cross section of the real leather is composed of irregular fibers. After scraping the broken skin fibers with your fingernails, there is no obvious change in the cross section. For the real leather, different parts + textures are irregular, and the nose smells fishy. Artificial leather smells of plastic or rubber, and the texture of each part is consistent. Foiled leather is an artificial surface layer that is affixed to the loose meat surface fiber layer under the natural leather. It cannot be called "leather", but is a synthetic leather with a natural leather inner layer as the base.


It can be summarized from the following aspects:
A. Look. First look at the appearance, leather has no base, artificial materials have a base; leather has small pores, and imitation leather does not.

B. touch. After touching it by hand, the plastic material of the artificial material is very strong, and the gloss is bright. In winter, there is a cold feeling in the hand, and there is no cold feeling in the smooth leather.

C. smell. The genuine leather smells of animal fat when it smells (that is, the smell of the skin), while the imitation leather smells of plastic.

D. Pressure. Pressing the soft part of the finished product with the thumb, there will be many small and uniform patterns around the real leather. When the thumb is lifted, the pattern disappears, that is, the real leather; while the artificial material may not have a pattern, or there may be thick lines, and the thumb is lifted. The pattern does not disappear, indicating that the grain layer on the surface of the material and the underlying mesh layer have been disengaged.

E. Inspect. Observing the cross section, the cross section of the dermis is composed of irregular fibers. After scraping the broken skin fibers with your fingernails, there is no obvious change in the cross section. For the dermis, the texture of different parts is irregular, the smell is smelly, and the artificial leather is plastic or rubber. Taste, the texture of each part is consistent. Foiled leather is an artificial surface layer attached to the loose meat surface fiber layer under the natural leather. It cannot be called "leather", but is a synthetic leather with a natural leather inner layer as the base.

F. water. Place tiny water drops on the surface of the skin. After a few minutes, the water drops spread through the pores, and obvious wet spots can be seen and absorb moisture.

G. burn. The edges of the skin burned with fire have a burning smell, while the imitation leather has a plastic smell.

H. color. The leather is dark and soft, while the imitation leather is bright.



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