Process Flow Chart of Dyeing Lab or Lab Dip Development

Dyeing Lab:

At first, dyeing is performed in the dyeing lab and then starting for bulk production. Dyeing lab work is called lab dip development. A lab dip is a swatch of fabric test dyed to hit a color standard. Lab dip plays an important role in the dyeing process. The bulk dyeing process completely depends on the lab dip. In the lab, a lab dip or sample is developed by the textile engineer or technician. Process flow chart of dyeing lab or lab dip development has given below.

Process Flow Chart of Dyeing Lab or Lab Dip Development
Work in dyeing lab

Flow Chart of Dyeing Lab/Lab Dip Development

Receiving standard swatch from the buyer

Determination of the sample’s possible to color combination with the help of Spectrophotometer or manually

Dispersion by autodoser

Trial dyeing of the first recipe

Unload

Normal wash

Hot wash with detergent

Oven drying

Ironing

Shade matching in a lightbox ( If Ok then send to buyer for approval)

If not ok

The first correction takes from a Spectrophotometer or manually

Dispersion by autodoser

Trial dyeing of the first recipe

Unload

Normal wash

Hot wash with detergent

Oven drying

Ironing

Shade matching in a lightbox ( If Ok then send to buyer for approval)

If not ok

The second correction takes from Spectrophotometer or manually

Dispersion by auto doser

Trial dyeing of the first recipe

Unload

Normal wash

Hot wash with detergent

Finishing

Hydro

Drying

Compare with a standard swatch

If ok

Send for buyer’s approval

Bulk production by considering the buyer’s approved sample as standard

Concept of ‘Bulk to Lab’ dyeing

The dyeing laboratory has a great role in setting and achieving RFT. Basically, labs in dye-houses are used for generating lab recipes (usually called Lab Dip), color control, incoming raw materials quality control, in line and of line quality control, and so on. Generating a common recipe for dyeing is one of the objectives of the labs.

Author of this Article:
Rana Sohel 
 Executive Engineer 
 Sunman Textile Mills Ltd. Chittagong 
 Cell: +8801912-420118 
 Email: rsohel07tex@gmail.com

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