May 11, 2017

Features And How To Identify Real Leather (part 1)

Before you choose for yourself a leather product, or choose to buy cowhide raw materials to produce a certain product, the first and most important thing is to know what you are paying for. Is it worth the money you spend? 

Today, many brands can provide leather. But not many of them can give you a real insight on the skin features and the different qualities. Some of them will give you very partial information.

With more than 10 years experience and expertise in leather, Aury Vietnam is happy to share information for all readers who love cowhide products for them to learn more about leather and its properties as well as the terminology used in the field of leather and tanning. 

Aniline Finished Leather: 

Aniline dyed leather or natural leather has been finished with a top coat that is either transparent or with the same color as the dye to protect the leather from scratches and surface damage. 

Antiquing Leather (Classic Leather Line). 

This is the type of leather produced with a method of contrast colors (usually the color of the leather surface tends to be darker than the base color - dye color) to highlight the natural veins on the leather surface or embossing effects. It can be done by hand or by machine. Usually these effects are often used on Chesterfield Sofa style furniture. 

Bonded Leather: (Faux leather) 

Bonded leather is a kind of imitation leather. This type of leather is made from the mechanical or chemical breakdown of leather shreds or fibers into granules or powders (like sawdust) and then they are mixed with a sticky glue and pressed into sheets. These sheets are covered in a variety of ways to form leather panels. Usually they are pressed and coated with simili or PU, and then embossed (grained). 

About quality: Since this is a form of imitation leather, its strength and durability are completely incomparable to real leather. They are easily scratched and peeled off after several years of use. 

Bonded leather can be easily found in the furniture industry, book covers and is popular in the fashion or fashion accessories sector. 

Products usually made of Bonded leather: Covers, books, Boxes, packaging of electronic devices, footwear accessories, belts, bags... 


Advantages

Disadvantages

  • Environmentally friendly
  • Take advantage of excess and waste leather
  • High consistency: Since this is considered a form of artificial leather, it will have no natural defects on the surface.
  • High productivity: Talking about the cutting process (because they are round and following same size)
  • Cost: Cheap
  • Can't keep the properties of leather
  • Difficult to repair or restore after damage
  • Not airy because the nature of imitation leather leaves no pores for air to escape
  • Hot
  • Quality: Much lower (than real leather)
  • Time of use: Not durable



Bicast leather: (Faux leather) 

Known as Bicast leather or Pu leather (Faux leather). It is a form of genuine leather with PU / Polymer coating on the surface. The polymer coating is completely separated from the leather layer, then the skin layer and the polymer layer are glued together with an adhesive layer (glue layer). At first glance, this polymer looks similar to the top coat of finished leather even though it has a very smooth and shiny appearance. These are features that sometimes deceive customers. In addition, Bonded and Bicast are both easy-to-clean leathers (because they are made of plastic surfaces). Users will not have to worry about stains, drinks that we will normally encounter when using Genuine leather interior. However, Bicast and Bonded cannot compare with real leather (Aniline / Full grain ...) in terms of quality, durability and value of the product. 

Buffed leather: 

This is a type of leather that has some grain on the surface. Small scars are removed by sanding and abrading (by hand or by machine). This removes a very light layer from the surface of the leather. And it is used on Aniline-dyed leathers, coated with color chemicals or to create a softer feel for Aniline leather. Full Grain is abraded into Nubuck leather. When you lightly touch the surface, it feels like velvet. And when lightly gliding, it will create effect lines in the direction of your hand. 

Coated Leather: 

A type of leather where the surface is finished and not more than 1/3 of the total thickness of the hide but not more than 0.15 mm. This can also be seen as Patent leather. 

Corrected Grain Leather: 

This leather type has the outer surface of the grain lightly removed by sanding or polishing and then the new surface is added by finishes. Usually in this processing step, the grain pattern will be embossed. This leather is commonly used with colored coatings and is protected finished leather. 

Corrected: 

A pattern that is embossed into the finish surface of the leather. 

Crust: 

Leather has undergone tanning, aniline dyeing and drying but has not yet a finished surface. 

Drum Dyed: 

A dyeing process that is done with the leather soaked in dye. The leather is placed in a rotating barrel to ensure maximum color absorption. 

Embossing/ Embossed leather: 

Normally, factories will buy available textured discs. This type of disc is quite large in size and very heavy. Then, depending on the requirements of each customer and of each different product, there will be corresponding patterns required. However, this plate (printing mold) is not cheap, so the number of printing plates will usually be limited. Currently the most common types of veins are still natural mill grain or grain pattern. The printing mold is made from steel then it's put into the machine. After temperature increases, the mold will gradually heat up and when the required temperature is reached, workers will put the leather sheets into the machine, which are pre-set molc  ds and press the textures onto the surface. The process is quite simple and easy to do. 


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