General Knowledge Of Processing Methods For All Kinds Of Leather Products

　　 General knowledge of processing methods for all kinds of leather products

1. Finishing leather: 90% of all kinds of leather have many problems when there is no surface finishing, such as rough pores, concave and convex surface, scars, etc. To make it useful Leatherwear It is necessary to beautify it with a variety of technology, using pigment paste, dye, film-forming agent for leveling and finishing. Finishing can endow leather with special optical effect. This kind of repair finishing leather is called finishing leather. Leather shoes made of finishing leather or modified leather shoes are called finishing leather shoes. Varnished leather does not mean low-grade leather. A variety of footwear must use finishing leather to meet the physical conditions required by the shoe itself, such as wear-resistant, washable and so on.

Second, polish the leather cover. Made of polished effect leather leather shoes It is easy to wipe and maintain.

3. Embossed double color effect leather: the semi finished leather after middle coating is pressed into fixed pattern by mechanical pressing, and then the cover and finish are made. The repeated modification of leather shoes made of embossed two-color effect leather should pay attention to the method. Colorless leather beauty cream or colorless shoe milk should be used for wiping and maintaining.

4. Antique effect leather: after the middle coat is not transparent, then part of the dark pattern is painted to imitate the ancient color, and then the cover and finish are made. The leather shoes made of antique effect leather can be repeatedly modified without damaging the pattern and being wiped and maintained normally.

5. Rubbing effect leather: it can also be called rub color leather. It is painted with light color on the bottom surface and sprayed with deep color on the surface. According to special needs, it can be wiped off or rubbed by cloth wheel to produce beautiful two-color effect, and then make cover and finish. Can also be called Decor leather, this kind of shoes maintenance can be primary color or colorless leather beauty cream.

6. Tortoise crack effect skin: it is considered that the effect of pulling the original film out of the crack and then modifying it by applying mechanical force. The leather shoes made of turtle crack effect skin can be repeatedly modified without damaging the lines. The original shoe color or colorless leather beauty cream can be used for maintenance.

7. Stone grinding effect leather: the finishing layer of embossed leather is polished off by fine sand to expose the background color, and then the bright handle agent is applied. The original shoe color or colorless leather beauty cream can be used for maintenance.

8. Metal effect leather: metal powder is added to the effect layer to make the finished leather emit golden luster under the irradiation of light. The leather shoes made of metal effect leather are called metal effect leather shoes, which can be repeatedly modified and normal nursing Maintenance.

9. Oily skin: also known as "chameleon". The color of this kind of skin will become lighter as soon as it is scraped with nails or stretched by hand, but it will return to normal after being smoothed by hand. Its characteristics are that the coating is greasy and greasy. The raw materials for coating coloring include color changing grease and metal complex dyes. This skin has aniline effect and skin discoloration effect at the same time. It has strong moisture resistance, weak leather brightness and good hand feeling. It is necessary to pay attention to professional care. Most of the shoes made of oil leather are casual shoes, and the common colors are black, dark brown, coffee, etc.

10. Waxing: the leather material is polished on the cloth wheel with some synthetic wax to produce the effect of discoloration.

11. Pearl leather: according to the surface texture of leather, it is usually divided into Pearl leather, ground leather and embossed leather. The ground leather and embossed leather belong to the category of finishing leather. The pearly leather requires the original pattern of the leather itself to be better. In aniline leather and semi aniline leather, this leather does not need fine grinding process, as long as the sealing effect of the bottom layer is good, it can also form a good leather appearance.

12. Polished leather: a traditional leather treatment method, which uses casein to finish the surface, and then repeatedly polishes the leather surface with the machine glass roller to produce elegant transparent luster. This kind of leather material is called polished leather. At present, this method is still applied to high-grade calfskin, lambskin and snake skin. It is suitable for high-grade leather shoes, which has poor water resistance and is widely used in Europe Zhou prefers this kind of polished leather shoes because they are bright and natural.

13. Patent leather: traditional lacquer leather finishing is a very labor-consuming method, which uses hot linseed oil for finishing, also known as hot lacquer leather finishing. Now the production of lacquer leather is using the cold finishing method, which is to coat a thick layer of polyurethane Brightener on the base of pigment paste resin to obtain a high gloss top layer.

14. Artificial leather: it is based on textile fabric and coated with a layer of finishing material on the bottom base. The head of cloth can be observed from the cross section. It has regular shape, no damage on the surface, uniform pattern and uniform texture. It has polyurethane artificial upper leather shoes; PVC foam artificial leather shoes can be repeatedly modified and maintained with normal oiling.

15. Recycled leather: grind the leftovers of leather into fine materials. In addition, the adhesive is pressed and synthesized, so it burns with a burnt smell of dermis. From the cross-section, there are also fiber layers similar to leather. However, from the surface, even the embossed ones will not create the pores and toughness with the shape and depth of the leather surface. Regular shape, no damage on the surface, uniform texture, repeated modification, normal oiling and maintenance.

16. Synthetic leather: it is made of chemical raw materials through chemical treatment. There is a special smell when burning, not the burning smell of animal skin. The surface has no damage, the pattern is consistent, the texture is uniform, it has good waterproof performance, and the water is not easy to penetrate into the inner layer. When there is dirt on the surface, wipe it with a wet cloth, and its luster will not change.

17. Mucocutaneous leather: commonly known as "flocking leather", a layer of flocked leather is pasted on the two-layer leather layer or leather surface. It has the characteristics of long hair and good appearance, but it is easy to wear and tear when wearing, and it is difficult to repair. Only clean and maintain it.

18. Transfer effect leather: the film pasted on the full grain leather or the same material by transfer method or adhesion method, and the PU and PVC film is pasted on the second layer leather to make it have full grain effect modification.

19. Suede leather: it is an anti fur surface, which is coated with grease pigment to form particles on the fur surface to form a medium oily fluff effect. Professional maintenance can not damage the oil spots and pile surface.

It can be seen that the leathers can be dyed with aniline or water. The dermis with visible grain lines and pores is called full grain leather, collectively referred to as aniline effect leather. Semi aniline effect leather is a kind of leather which is formed by adding proper amount of pigment paste and film-forming material with dyeing water. The treated leather surface can partly cover the scratch and scar of the original skin, so that the leather can achieve the semi original leather effect. Keep the natural characteristics of leather. Because the color difference often occurs on benzene dyed leather, the maintenance staff of shoes should have this basic understanding in order to better maintain this kind of shoes. At present, the quantity of pure benzene dyed leather produced in China is not large, but benzene dyed leather and drum dyed leather are still surface coated and directly used on shoes. Because leather emphasizes natural, the natural patterns and delicate performance of benzene dyed leather show the beauty of leather, and the value is naturally higher than that of finishing leather. Soft feel, natural upper, maintenance and decoration pay attention to professionalism.

21. Suede: the so-called double skin or hammer skin, usually not passed through surface treatment It is not necessary to finish the original leather, but to make the woolen surface with a machine grinding machine. It needs industrial treatment and dyeing, commonly known as the suede effect. Suede leather shoes have excellent comfort, good fluff and hand feeling, bright and pure colors, etc. The maintenance and decoration should be professional.

22. Fluffy skin (frosted leather): the so-called two-layer skin or hammer skin, usually without surface treatment, does not need to be coated on the original skin, using a sanding machine to grind the surface of the original skin into a sand surface, what color is needed before dyeing with water. Frosted leather shoes have excellent comfort, small fluff and good hand feeling, just like the surface of flannelette. They are important materials mainly used in shoes with warm feeling. It is suitable for making all kinds of shoes, and it is also an important material in clothing. The maintenance and decoration should be professional.