Factory Promotional Fabric Dyeing Process - Indigo Slasher Dyeing Range – Singularity

Specifications

Beam Creels

Features

Beam brake

Electric Cabinet Partial View

Principles for slasher indigo dyeing

1. Yarn is first prepared (by ball warping machine for rope dyeing, by direct warping machine for slasher dyeing) and start from the beam creels.
2. Pre-treatment boxes prepare (by cleaning & wetting) the yarn for dyeing.
3. Dye boxes dye the yarn with indigo (or other types of dye, such as sulfur).
4. Indigo is reduced (as opposed to oxidation) and dissolved in the dye bath in the form of leuco-indigo in an alkalic environment, with hydrosulfite being the reduction agent.
5. Leuco-indigo bonds with yarn in the dye bath, and then brought into contact with oxygen on the airing frame, leuco-indigo reacts with oxygen (oxidation) and turns blue.
6. Repeated dipping and airing processes allow indigo to gradually develop into a darker shade.
7. Post-wash boxes remove the excessive chemicals on the yarn, additional chemical agents may also be used at this stage for different purposes.
8. sizing process is done right after dyeing on the same machine, final beams are ready for weaving.
9. Productivity-wise, a slasher dyeing range usually has about HALF the production capacity of 24 / 28 ropes dyeing range.
10. Production capacity: About 30000 meters yarn by a slasher dyeing range.

Headstock

Sizing box

Split zone

Top View of slasher dyeing machine

Automatic Tension Control

Endress+Hauser Flowmeter

Top sheet & Bottom sheet