WASHING AND FINISHING OF COLORED COTTON
AIM :---To wash and finish a colored article .
INTRODUCTION :----
color permanence test for colored cotton :---
The easy test is to wet a corner of the material and to place it in between dry
pieces of white cloth and then press it hard with a hot iron . If the color is unstable it will come off on the white cloth . Fast colored articles gradually fade and get
dulled by age and repeated washings . Therefore care must be taken not to
use such re - agents and processes which have a harm full effect on color .
Factors which effect color are
1. Long contact with moisture .
2. Excessive heat .
3 . Acids and alkalies and
4 . Friction .
Articles of loose color are difficult to wash and are better dry clean . But if they
are washed it must be done in quick sub session . Some mordant such as
common salt or vinegar is used in washing and rinsing waters to fix the color
and thus minimize its bleeding .
PROCEDURE :---
AIM :---To wash and finish a colored article .
INTRODUCTION :----
color permanence test for colored cotton :---
The easy test is to wet a corner of the material and to place it in between dry
pieces of white cloth and then press it hard with a hot iron . If the color is unstable it will come off on the white cloth . Fast colored articles gradually fade and get
dulled by age and repeated washings . Therefore care must be taken not to
use such re - agents and processes which have a harm full effect on color .
Factors which effect color are
1. Long contact with moisture .
2. Excessive heat .
3 . Acids and alkalies and
4 . Friction .
Articles of loose color are difficult to wash and are better dry clean . But if they
are washed it must be done in quick sub session . Some mordant such as
common salt or vinegar is used in washing and rinsing waters to fix the color
and thus minimize its bleeding .
PROCEDURE :---
RULES FOR WASHING COLORED ARTICLES :---
Stains are to be removed with water and soap as far as possible . Solutions of
chemical re- agent are to be carefully used and only when absolutely . Rinsing is
to be done quickly and thoroughly colored articles must not be steeped .
But very dirty articles may be steeped for a short time with a mordant .
METHOD OF WASHING :---Wash all the articles by either suction washing
or by kneading and squeezing . use warm water and soap jelly or solution
which is free of alkali . Add a mordant to the water if necessary .
RINSING :---Rinse in two or three warm waters till all the soap is removed .
Last rins must be off cold water to which Acetic acid or vinegar is added
to fix and freshen the color . ( 1 teaspoon of acetic acid ) or 2 table spoons
of vinegar to a gallons of water ) . The acid or vinegar need not be used
for articles . whose color is fast .
colored articles or neither boiled nor blued except blue articles .
STARCHING :---Use boiling or cold water starch as may be needed by the article .DRYING :---Remove moisture thoroughly by ringing before hanging the articles
to dry . Dry the articles in the shade to prevent bleaching by sunlight . Turn
the articles inside out and dry it where there is good breeze ( air ) . Ring the
article thoroughly to avoid getting dark patches on the lower side of the article .
IRONING :---Use a moderately hot iron on the fabric when they are evenly
damped . Iron on the wrong side out to eliminate shine . When colors are
still lightly to run , the work should be carried out over a cloth or
over paper , to protect the ironing sheet .
article thoroughly to avoid getting dark patches on the lower side of the article .
IRONING :---Use a moderately hot iron on the fabric when they are evenly
damped . Iron on the wrong side out to eliminate shine . When colors are
still lightly to run , the work should be carried out over a cloth or
over paper , to protect the ironing sheet .
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