Leather

Definition

Leather is a durable and flexible material created by the tanning of animal rawhide and skin, often cattle hide. It can be produced through manufacturing processes ranging from cottage industry to 

Uses of the leather

Leather is used for various purposes including clothing (e.g. shoes, hats, jackets, skirts, trousers and belts), bookbinding, leather wallpaper, and as a furniture covering. It is produced in a wide variety of types and styles and is decorated by a wide range of techniques.

Types of leather

In general, leather is sold in four forms:

• Full-grain: leather refers to hides that have not been sanded, buffed, or snuffed (as opposed to top-grain or corrected leather) to remove imperfections (or natural marks) on the surface of the hide.

• Top-grain: leather (the most common type used in high-end leather products) is the second-highest quality.

• Corrected-grain: leather is any leather that has had an artificial grain applied to its surface. The hides used to create corrected leather do not meet the standards for use in creating vegetal-tanned or aniline leather.

 Production

The leather manufacturing process is divided into three fundamental sub-processes: preparatory stages, tanning, and crusting. All true leathers will undergo these sub-processes. A further sub-process, surface coating, can be added into the leather process sequence, but not all leathers receive surface treatment. Since many types of leather exist, it is difficult to create a list of operations that all leathers must undergo.

       Specific properties

The leather isn't elastic because you can't streth

The leather is hardnes because is dificult to break

And the leather isn't brittlenes

Properties of the matter

The leather isn´t conductivity of heat 

The leather isn´t transparencity because is opac.

And the leather is impermeability because the water can´t pass

Where it comes from

The leather comes from some animals