Where does your leather come from?
Cand article will appeal to your senses. Touch, look, feel. You will become unbeatable by origin of the leather. In addition toarticle on leather making, you will still discover here techniques such as grain where the color, you will try to recognize the true of false. You will understand how silky suede is obtained, how we imitate the scales of a python or crocodile skin from a calf leather.
And when we talk about origin, we also talk about animals, where it all begins.
1.2 The stretch test
1.4 The colour
2. The animal
2.1 Lamb leather
2.2 Cow leather
2.3 Calf leather
The true from the false
Abefore talking about the nature of leather, its original animal, let's talk about imitation leather, imitation materials synthetic. Much cheaper, they are also good lower quality.
Quality goes through imperfection
Lleather is the result of the treatment of animal skins. Nature, as perfect as it is, also gives us its mark of irregularities. A real skin is looked at through a magnifying glass to find what betrays its experience. The life of our dear animals marks the exposure to all kinds of aggressions and more or less painful encounters: Scratches, streaks, scars, hollows, bumps, everything is good. It smells of lived!
And remember that the hairs are nested in the skin, through the surface which keeps the memory of it.
a hair in the skin
The edge of the faux leather is perfect, cordless, without roughness. Although there are techniques forfinishing of slices when hot, real leather will show its animal edge, unambiguously. AnneCecileCreation creations thus choose to expose the true nature of leather.
a slice of leather on a CREATIONACC ® wallet
The stretch test
imitation leather fabric
Lleather ages well. you know the expression. And when you get older, you have wrinkles. Here is a good memo-technical means to remember that wrinkles should appear on leather that is being ground. A faux synthetic leather will not fold easily, it will not change color on the fold. Synthetic fabric folds when you manipulate without wrinkling, unlike natural skin, yours for example. Take the test, press the skin on your hand.
Skin wrinkles, natural mark of time
Vyour skin is not tight. That of animals either. Synthetic faux leather is not porous. Result, the liquid slides unequivocal above on its artificial nature.
There are treatments to make leather waterproof. Who hasn't heard a shoe salesperson ask you at the checkout if you have "what it takes" to make leather waterproof? Among the products I use, "Ultra Protec" "Beaume de vie" brand is really effective.
Waterproof shoe leather
Flet's be simple, color is not at all a good indicator, we tint the real as much as the faux leather, all colors are accepted.
The color of the leather, how do we do it?
Gthanks to currying and at finishingand at the patina, the final stages of preparation / manufacture, the leather you love takes on its color and suppleness.
The Patina : The patina corresponds to theaging, mechanical or chemical. In the case of leather, there is a certain aesthetic advantage in wearing leather of a certain age. The industry then looked at solutions to accelerate this action of time. We will not be exhaustive, a next article why not.
Example of chemical patina : We start with acetone, a powerful solvent for stripping leather, in case it is waterproof. In a brush or in a vat as in Fes in Morocco, the colors spring up.
Dyes at FES in Morocco.
Petit animal bestiary to identify the natural characteristics of each of their skin. Unfortunately, these characteristics will not always be sufficient to decide on the nature of the skin. Treatments will often mask the origin of your leather. Carpenters are wrong about the nature of wood. Unless you have a microscope to reveal the structure of the hair implementation, the following chapters will not be decisive. The rule is combination, the superimposition of knowledge to allow a name to be put on the animal.
Lhe skins are smaller than those of a cow.The patterns overlap and are slightly less uniform.
Smooth and colorful, flexible, soft to the touch.
The skin of this sheep can be treated in different ways, but no exclusivity in the matter. You can also apply the recipe to other types of leather: those of other sheep (sheep, sheep), cattle (calf, cow, bull calf, bull, buffalo, bison, ...), goats (cgoat, kid, goat, chamois, reindeer, deer, caribou), pigs (pig family).
Let's talk about 2 of these right now treatments, more often applied tolamb in tannery: The grain and treatment NAPPA.
Grained leather, jacquesdemeter.fr source
Aussi called foulonné, this treatment makes it possible to accentuate the steam naturally regular grain, un treatment that creates a relief, and accentuates the grain and certain colors such as red or blue. Rather than technique, it is rather a recipe. Everyone puts their know-how, their method.
Another common practice is heated presses at 80 ° c, in the form of rolls or plates which tighten the leather very strongly against a pattern reasons (small grain, large grain, etc.)
The little story in the big story.
As so often in the history of crafts, it is more of a discovery than an invention. We tell 2 stories, each time in Scotland:
It was discovered that the impression of the ground pattern on pressed leather of substantial weight was irreversible. His tanner might stretch it, the relief was definitely part of the material. An evil for a good because the success of this skin was soon confirmed.
Another story says that the Whiskey barrels (or Whiskey for the Irish) helped to highlight a chemical reaction with barley. Or how the grain of barley gave birth to the grain of leather.
nappa lambskin / veiled
Additional treatment applied to the surface to protect it from wear, UV or even rain. It is less natural than plunged leather (which is immersed to be dyed in the mass, a treatment reserved for the most beautiful lambskins).
Nappa lamb leather, decocuir.com source
Éthickness, regularity of the grain, uniform and shiny appearance. This leather is said to be raw. Preferred in making jackets, it skates well.
In general, a leather is quite thin, between 0.5 mm and 3, even 4 mm for the buffalo, 8 mm. Cowhide leather (cow or beef, i.e. a castrated bull) is around 1.5 mm. With this bovine leather, we seek durability and resistance. It is also widely used because it is abundant.
Le veal : Between lambskin, flexible, soft, and cowhide, wear-resistant, calf leather takes the best of both skin types. Used for shoes or small leather goods, often treated in full flower(click to find the definition). Tanneries specialize in veal for its qualities which interest the leather goods industry.