Difference between revisions of "Porous leather"
From www.leather-dictionary.com - The Leather Dictionary
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| − | == | + | ==Porous leather - Open-pored leather== |
| − | + | For the [[leather cleaner|cleaning]] and [[leather care|care]] of leather, as well as the sensitivity of leathers, the distinction is always made between porous and leather [[finish|finished with a protective layer]]. Porous leather is highly sensitive to liquids which are easily absorbed, causing permanent stains. | |
| − | + | To find out if leather is porous, simply rub a drop of water with your finger in an unseen area. If the drop penetrates into the leather, it is porous. In most cases, this area becomes darker. If the drop runs off, then it is not porous. | |
| + | |||
| + | It is similar with wood. Unpainted wood is open-pored and liquids are drawn in and lacquered wooden surfaces are protected by the varnish against liquid penetration. | ||
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</p> | </p> | ||
<p align=center> | <p align=center> | ||
| − | '' | + | ''The first picture shows a drop of water on a [[finish|pigmented]] [[cow leather|cow hide]]. The drop does not enter. The other pictures show a drop of water entering porous [[smooth leather]]. <br></p> |
<p> </p> | <p> </p> | ||
| − | ==[[ | + | ==[[Nubuck]] - [[Suede]]== |
| − | [[ | + | [[Nubuck]] and [[suede]] leather have a more or less fine-haired [[Sanding leather|sanded]] surface and behave similar to textiles. Such surfaces are always porous. |
<p align=center> | <p align=center> | ||
| − | [[bild:Nubuk-002.jpg| | + | [[bild:Nubuk-002.jpg|500px]] |
| − | + | ||
</p> | </p> | ||
<p align=center> | <p align=center> | ||
| − | '' | + | [[bild:Velour-04.jpg|500px]] |
| + | </p> | ||
| + | <p align=center> | ||
| + | ''[[Nubuck]] leather has a finer pile and [[suede]] leather has a coarser pile.''<br></p> | ||
<p> </p> | <p> </p> | ||
| − | == | + | ==Porous smooth leather== |
| − | + | The open-pored leathers include the porous [[smooth leather]] as well as all velvet-like leathers, such as [[nubuck]] and [[suede]]. The most porous [[smooth leather]] is [[aniline leather]]. On the other hand, [[Coated leather - Laminated leather|leather coated with a film]] (including [[patent leather]]) is neither open-pored nor [[Breathability of leather|breathable]]. | |
<p align=center> | <p align=center> | ||
| − | [[bild:Offenporig-001.jpg| | + | [[bild:Offenporig-001.jpg|500px]] |
| − | + | ||
</p> | </p> | ||
<p align=center> | <p align=center> | ||
| − | '' | + | [[bild:anilinoffen.jpg|500px]] |
| + | </p> | ||
| + | <p align=center> | ||
| + | ''Microscopic image of the surface of an [[aniline leather]]. The [[Leather hair pores - Hair follicles|open pores of the skin]], which are not protected by a [[finish|colour layer]], are clearly visible.''<br></p> | ||
<p> </p> | <p> </p> | ||
| − | |||
<p align=center> | <p align=center> | ||
| − | [[bild:Pigmentierung-gepraegt-003.jpg| | + | [[bild:Pigmentierung-gepraegt-003.jpg|500px]] |
| − | + | ||
| − | + | ||
</p> | </p> | ||
<p align=center> | <p align=center> | ||
| − | '' | + | [[bild:Pigmentierung-gepraegt-002.jpg|250px]] |
| + | [[bild:Pigmentierung-gepraegt-001.jpg|250px]] | ||
| + | </p> | ||
| + | <p align=center> | ||
| + | ''Strongly [[finish|pigmented]] leather.'' | ||
</p> | </p> | ||
<p align=center> | <p align=center> | ||
| − | <flashow> | + | <flashow>//www.youtube.com/v/DFtRH_aLGL0&fs=1&color1=0x660000&color2=0x550000&border=1|width=500|height=281,25</flashow> |
</p> | </p> | ||
<p align=center> | <p align=center> | ||
| − | ''[[ | + | ''[[Leather videos|Video]] about testing the porosity of [[smooth leather]].'' |
</p> | </p> | ||
| − | == | + | ==Partially porous [[smooth leather]]== |
| − | + | There are [[Types of leather|leather types]] such as [[Semi-aniline|semi-aniline leather]] or [[Pull up leather - Greased leather - Waxed leather - Oiled leather|oiled, waxed and greased leather]], where the porosity differs. Only the cautious rub test (to avoid stains) in an unseen area helps to check whether the leather is porous or not. If moisture penetrates, caution is advised in daily handling as well as during [[leather cleaner|cleaning]] and [[leather care|care]]. | |
<p align=center> | <p align=center> | ||
| − | [[bild:E-_Zwischenlager_Fotoverzeichnis-Firma_DATA2-FO_Lederarten_Semianilin_Semianilin-Poren-01.jpg| | + | [[bild:E-_Zwischenlager_Fotoverzeichnis-Firma_DATA2-FO_Lederarten_Semianilin_Semianilin-Poren-01.jpg|500px]] |
| − | + | ||
</p> | </p> | ||
<p align=center> | <p align=center> | ||
| − | '' | + | [[bild:VW-Tourareg-Individualleder-Fleck-01.jpg|500px]] |
| + | </p> | ||
| + | <p align=center> | ||
| + | ''The sensitivity of the [[finish|lightly finished]] [[Semi-aniline|semi-aniline leather]] must be carefully tested.'' | ||
</p> | </p> | ||
<p align=center> | <p align=center> | ||
| − | [[bild:Fettleder-04.JPG| | + | [[bild:Fettleder-04.JPG|500px]] |
| − | + | ||
</p> | </p> | ||
<p align=center> | <p align=center> | ||
| − | ''[[ | + | [[bild:Pull-Up-Leder-02.jpg|500px]] |
| + | </p> | ||
| + | <p align=center> | ||
| + | ''[[Pull up leather - Greased leather - Waxed leather - Oiled leather|Pull up leather, greased leather, waxed leather and oiled leather]] is more or less open-pored.'' | ||
</p> | </p> | ||
| − | |||
| − | |||
| − | |||
== Additional information == | == Additional information == | ||
| − | * [[ | + | * [[Types of leather]] |
| − | * [[ | + | * [[Breathability of leather]] |
| − | * [[ | + | * [[Leather hair pores - Hair follicles]] |
| − | * [[ | + | * [[Waterproofing leather]] |
Latest revision as of 20:54, 14 October 2022
Contents
Porous leather - Open-pored leather
For the cleaning and care of leather, as well as the sensitivity of leathers, the distinction is always made between porous and leather finished with a protective layer. Porous leather is highly sensitive to liquids which are easily absorbed, causing permanent stains.
To find out if leather is porous, simply rub a drop of water with your finger in an unseen area. If the drop penetrates into the leather, it is porous. In most cases, this area becomes darker. If the drop runs off, then it is not porous.
It is similar with wood. Unpainted wood is open-pored and liquids are drawn in and lacquered wooden surfaces are protected by the varnish against liquid penetration.
The first picture shows a drop of water on a pigmented cow hide. The drop does not enter. The other pictures show a drop of water entering porous smooth leather.
Nubuck - Suede
Nubuck and suede leather have a more or less fine-haired sanded surface and behave similar to textiles. Such surfaces are always porous.
Nubuck leather has a finer pile and suede leather has a coarser pile.
Porous smooth leather
The open-pored leathers include the porous smooth leather as well as all velvet-like leathers, such as nubuck and suede. The most porous smooth leather is aniline leather. On the other hand, leather coated with a film (including patent leather) is neither open-pored nor breathable.
Microscopic image of the surface of an aniline leather. The open pores of the skin, which are not protected by a colour layer, are clearly visible.
Strongly pigmented leather.
Video about testing the porosity of smooth leather.
Partially porous smooth leather
There are leather types such as semi-aniline leather or oiled, waxed and greased leather, where the porosity differs. Only the cautious rub test (to avoid stains) in an unseen area helps to check whether the leather is porous or not. If moisture penetrates, caution is advised in daily handling as well as during cleaning and care.
The sensitivity of the lightly finished semi-aniline leather must be carefully tested.
Pull up leather, greased leather, waxed leather and oiled leather is more or less open-pored.
Additional information
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