DYEING METHOD QUESTION

MONDOL GROUP

NAYAPARA, KASHIMPUR,GAZIPUR, BANGLADESH

1

Why we use lab for dyeing ?.

Ans : Colour recipe adjustment for bulk production.

2

For dyeing of polyester what type of dye stuff we use ?.

Ans : Disperse dyes.

3

What temperature to be used for dyeing polyester fabric ?.

Ans : 130˚

4

Normally which dye stuff we use for knitted fabric ?.

Ans : Cotton for used-  ( A )Reactive dyes.Sulpher dyes.

: Polyester for used ( B ) Dispere dyes.

: Polimade for used  ( C ) Acid dyes.

5

Why Pre-Treatmnent is used for dyeing ?

Ans :

( A ) Fabrics natural tone removal.

( B ) Dust dirt,Oil wax, Metal content.

( C ) Absorvency.

6

What is the intermidiate process after dyeing & before dyeing ?

Ans : Squeezer process.

7

What type of fabric required to heat set ?

Ans : 100% Polyester, PC, CVC, Lycra fabric.

8

Why we use compacting machine instead of normal calender machine ?

Increased fabrics weight ( GSM ) & Shrinkage control.

9

Before making a batch what type of fault are to be checked ?

Ans : Knitting hole. Patta, Sinker mark, Oil mark, Niddle mark, Star mark.

10

What is allowable shrinkage limit for dyeing ?

Ans : +_ 5%

11

Before delivery the fabric to graments section what parameter to be checked ?

Ans : Colour shed should be match with approval lab.

: Test Report----------

: ( A ) Shrinkage report

: ( B ) Colour fastness report

: ( C ) Uneven dyeing is there or not

: ( D ) GSM & DIA

12

What type of method is used in knit dyeing ?

Ans : Exhaust method

13

What is the process flow chat of dyeing ?

Ans : Grey fabric rcvd from knitting section----------

( A ) Grey fabric inspection

( B ) Batching

Load in the which M/C

( A )

Scouring

( B )

Hotwash

( C )

Neutralization

Dossing levelling other au

( A) Dyeing

(B ) Hotwash

( C ) Soping

( D ) Acid wash

( E ) Fixing

( F ) Softner

( A) Squeezer

( B ) Dryer

( C ) Compacting

( D ) Checking & Packing

( E ) Delivery to graments.

Dyeing price