Technical Library
Preparation of the dying; these are the operations to make the goods look smooth and remove the some other subtances which are not necessary.
Pre-treatement apllied to cellulose based products
Pre-treatement apllied to prtoein based products
Pre-treatement apllied to silked based products
Pre-treatement apllied to syntetic based products
In textile , coloring of yarn and fabric is done by dyeing and printing. It is called dyestuff which is used to coloring the textile products. While a normal painting or wall paint is removed by scraping or wiping (physical means), the removal of dyes from textile products is completely done by chemical reactions.
Dyeing of the textile products can be several different types. These;
Dyeing in the solution or melt before the synthetic fiber passing through the spinnnered
Fiber Dyeing
Dyeing as a tops or tows
Dyeing after spinning fiber yarn
Fabric dyeing after weaving fabric from yarn
Dyeing in garment form (piece)
Fabric printing types as following;
Direct Print
Discharge Print
Rezerve Print
Transfer Print
INK-JET Print
Special Prints
Absorbing the solved or dispersed dyestuff molecules to the fiber surface
Diffusion of dyestuff into the fiber
Interaction of dyestuff and product is called fixation
Heat, time, salt amount, ph values are very important to coloring the product.
2 techniques are used to obtain one or more colored patterns on fabrics;
These steps following on printing techniuqe;
Peneteration of dissolved dyestuff into the fiber
Permanent attachment of dyestuff to fibers
Fixing the dyestuff to the fibers
In textile; the mechanical and the chemical processes after the pre threatment and coloring are called ‘post threatment’ and ‘finishing’. In this process, fabric’s touch, appearance etc. İs changed and improved. Chemical finishing processes vary according to fiber types.
Chemical processes applied to cellulose based product
Chemical processes applied to protein based product
Chemical processes applied to synthetic based product