Difference between revisions of "Wet blue"
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Wet Blue refers to moist [[Chrome tanned|chrome-tanned leather]]. In this phase, the leather is tanned, but neither [[Drying leather|dried]], [[leather colour|dyed]] nor [[finish|finished]]. The bluish colouring is produced by the [[tannins|chrome tanning agent (Chromium (III) oxide)]], which is blue and is contained in the leather after [[tanning leather|tanning]]. | Wet Blue refers to moist [[Chrome tanned|chrome-tanned leather]]. In this phase, the leather is tanned, but neither [[Drying leather|dried]], [[leather colour|dyed]] nor [[finish|finished]]. The bluish colouring is produced by the [[tannins|chrome tanning agent (Chromium (III) oxide)]], which is blue and is contained in the leather after [[tanning leather|tanning]]. | ||
| − | Nowadays leather is [[leather colour#Dyed leather|dyed | + | Nowadays leather is [[leather colour#Dyed leather|dyed through]] in wished colours. The dyes have no opacity. In the case of bright leathers, the back side of the [[finish|finished leather]] would then be in the blueish colour of the chrome tanning agents. By a retanning, the leather is bleached that light colours can be achieved with better dying. |
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| − | ''Wet-Blue before [[Drying leather|drying]]. - The [[tannins|chrome tanning agent (Chromium (III) oxide)]] | + | ''Wet-Blue before [[Drying leather|drying]]. - The [[tannins|chrome tanning agent (Chromium (III) oxide)]] colours the leather slightly bluish. [[Drying leather|Dried]] wet blue = [[crust leather]].''<br> |
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Revision as of 14:21, 19 February 2017
Wet Blue refers to moist chrome-tanned leather. In this phase, the leather is tanned, but neither dried, dyed nor finished. The bluish colouring is produced by the chrome tanning agent (Chromium (III) oxide), which is blue and is contained in the leather after tanning.
Nowadays leather is dyed through in wished colours. The dyes have no opacity. In the case of bright leathers, the back side of the finished leather would then be in the blueish colour of the chrome tanning agents. By a retanning, the leather is bleached that light colours can be achieved with better dying.
Wet-Blue before drying. - The chrome tanning agent (Chromium (III) oxide) colours the leather slightly bluish. Dried wet blue = crust leather.
Video about leather production
The leather production in a modern tannery.
Additional information
a kotori web solution