Dyeing
see also: Etymology of Dyeing
A dyeing is a Colorant absorptive by the support and which mixes with its initial color, instead of covering it like a Pigment. For example a fabric Bleu plunged in a Bain of dyeing Jaune will become Vert, by combination of blue and the yellow.
The principle of the dyeing requires a coloring product, a fixer and water.
The dyeings are used in Cosmétique for the Cheveux, in Ameublement to tint the Bois or the Textile S, in Maroquinerie for the Cuir, in Peinture, etc
In Phytotherapy, one speaks about dyeing mother when the active components of plants are extracted with an alcohol.
History
The Indigo, a dyeing Bleu E extracted the indigotier is one of oldest known dyeings the, of the traces were found by it on woven Vêtement S of the ancient Egypt.1.000 before J.C., the port of Tyr was famous for the crimson.
Types of dyeings
- natural Dyeings:
- Blue: Indigotier, sheets of Guède, bay of Brown Elder tree
- with Black: wrap Noix, Café, cabbage, bark of Saule or Bourdaine.
- Yellow: Achillée, peels of Onion, The of Paraguay, flowers of Camomile, maple, Wormwood, Tanaisie, Ripe
- Red: roots of garance, cochineal, eggs of Kermes, Henné
- Pastel, paste of pigments coloured with let us tons clear
- Pourpre: murex
- Green: Prêle, Minium, seeds of Carob
- Purple: Rose trémière, flower of Concern
Dyeing and textile
It can intervene at different time of manufacture from the Vêtement: on the wire (before or after the spinning mill, one speaks about woven tints ), on the fabric woven (one speaks about dyed in part ) or on finished clothing (practiced especially since the Années 1980).There exist three methods of dyeing in the Textile:
- the direct dyeing, the fabric is directly plunged in the bath of dyeing, this method is considered to be not very reliable because it supports discharging.
- the direct dyeing by chromate finishing, the fiber is prepared with the action of the dyeing by a product, the corrosive ;
- the indirect dyeing, the fabric is impregnated various products which cause the appearance or the fixing of a color by chemical reaction.
Note
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