This document provides information about dyeing fabric, including an overview of the dyeing process, chemicals used, safety procedures, and troubleshooting. It discusses the startup and shutdown of dyeing plants, as well as safety hazards like high temperatures, fires, hazardous chemicals, and accidents. Chemicals are listed with their purposes. Procedures to address issues like uneven dyeing, entanglements, and machine problems are suggested. General safety rules and protections from temperature, pressure, noise, chemicals, and injuries are outlined.

2. Dyeing Fabric
Supervision By : Sir Haris Mehmood Khan
:Sir Imran Rasheed
Presentation By: Tanveer Hussain
2009-bt-chem-22
Syed Hasnan Bukhari
2009-bt-chem-31

3. •
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Overview of Plant
Startup/shutdown of plant
Troubleshooting of a Equipment
Plant Interlocking's
Safety on Plant/Hazards

6. Polyester Dyeing Chemicals
CHEMICAL
PURPOSE
Hostal Pal,Imacol MPE-PK,D 600
Leveling agents
Rucogen Wbl,Dekol SNS,Biavin DFG
Soaping agent(Detergent)
H2O2, Caustic Soda
Bleaching agent
Citric acid
PH controller
Accetic Acid,Ecozyme Pk
Neutralizing agent
Sodium Acetate
Buffer
Ceranine HCS (Past) 13%
Solution,Ceralube NVJ
Softener
Dyes
synolon,Disperse,and Dyannix etc.

7. Cotton Dyeing Chemicals
CHEMICAL
Purpose
SeraBid MIP,AlbaTex DBC,Biavin DFG
Leveling agent,anti creasing agent,
wetting agent
H2O2, Caustic Soda(50%)
Bleaching agent
Citric Acid
PH Controller(5-6)
Globular salt
Fixing agent, increase specific gravity
Soda ash
Picking agent
Dekol SNS,Biavin DFG
Detergent
Ceranine HCS,Ceralube NVJ
Softener

8. Turn off steam valve
Reinzing cooling is done
Completely drain Machine.
Turn off pump
Switch off machine

9. Problem: Uneven dyeing,patches,creezing on
dyed fabric
Consequences:
Sudden shut down of Machine, Improper
heating and cooling
Suggested Remedies:
DO proper shutdown to machine
Follow S.O.P for Shut down/Heating and
cooling as described in M/C manual

10. Problem: Entanglement of fabric lot inside
machine nozzles
Consequences:
Low or high Nozzle Pressure
Suggested Remedies:
• Turn reverse switch clock- wise to pull back
fabric lot in order to remove entanglement of
fabric lot

11. Machine does not fill with water
• check the water line pressure
• check the level indicator is working
• Recheck the programmed quantity
• check the machine’s temperature

12. Poor rate of heating and cooling
• check the steam supply pressure
• check that the heating and cooling valves are
opened/closed
• recheck that the programmed parameters are
correct
• check that the heat exchanger is not blocked

13. • Insufficient nozzle pressure
• is the filter system clean?
• check that the slits of the nozzle are not blocked
• check that the pump is not blocked
• check that the heat exchanger is not blocked

14. • Chemical addition tank pressure pump does
not operate
• check that the pipe line from the addition tank
is not blocked
• check the electrical connections and fuses

15. General Safety Rules
• NEVER open a machine at temperatures above
80°C or 180°F !
• NEVER open a machine that is under pressure!
• NEVER cool a machine by spraying it with
water!

16. Quick-opening doors interlocking
Device
o A temperature sensitive
interlock is provided to
prevent the doors being
opened
while
the
temperature of the liquor
inside the vessel exceeds
80°C.

17. • Temperature and pressure
relief devices
o Safety valves are provided
with the machine in order to
release high temperature and
pressure inside machine.

18. •
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•
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High Temperature
Fire
Noise
Hazardous Chemicals
Accidents/Injuries

19. Hazard
Consequences
Safety
High Temperature
High Temperature(135-140°C)
dyeing Machines
Ensure use of drinking water
After regular interval of time
during working
Provide first Aid and then
contact with Doctor
Provide proper ventailtion to
working area
Provide coolers to working area

20. Hazard
Consequences
Safety
Fire
use of flammable substances, or oxidizing
agents or fluff, waste materials, dust, trash
Do not smoke at working
Place/chemical area.
Provide fire alarm pull
station; fire extinguisher
and fire blanket;
Provide smoke detector
at working area.

21. Hazard
Noise
Consequences
Running of high speed machines
Safety
Wear air plug particularly
during working at machines

22. Hazard
Consequences
Safety
Hazardous
Chemicals
inhalation or skin contact causes
toxicity and carcinogenicity
Use proper PPE such as mouth
mask ,gloves , Charcoal mask,
goggles and safety shoes,
Protective clothing

23. Hazard
Consequences
Safety
Accidents/Injuries
Explosion of pressurized
equipments,fire,Chemical
Hazards
 Appropriate first aid
facilities should be
provided
 Employees should be
trained in first aid

24. Chemicals must be stored in a safe and
orderly condition.

25. Compressed air must only be used for
cleaning equipment and not the employee’s
body.
Improper use of compressed air to
clean the employee.
Proper use of compressed air to
clean equipment.