In textile finishing unit; dryer uses for dry the knit, woven fabrics and dyed yarn. But the drying process and drying mechanism of yarn and fabrics is different from one to another. In dryer, drying and curing is done as per required.
Drying: The main functions of a textile dryer is to dry the textile fabrics. Drying is defined as a process where the liquid portion of the solution is evaporated from the fabric.
Curing: Curing can be defined as a process following addition of a finish to the textile fabrics, in which materials are heated for a certain time in elevated temperature to effect a chemical reaction. This curing operation is most common in finishing of the printed goods.
Considering points for selecting relax dryer: Following points should consider during buy a dryer.
- Heating methods: The textile fabrics may be heated by gas burner or steam.
- Chamber: Number of chamber.
- Burner: Number of burner.
Drying Machine Parameter Set Up For Relax Dryer: Here I have given two relax dryer machine parameter.
Ruckh Relax Dryer (Germany):
Machine Parameter | Set-Up value |
Temperature value | 100oc – 120oc for white shade 120oc – 130oc for light shade 130oc – 140oc for dark shade 150oc – 170oc for curing |
Blower fan setting | Auto |
Exhaust fan setting | Auto |
Machine speed | 3-35 m/min; depends on quality of fabric. |
Over feed | 0-40%; depends on fabric consumption. |
Width of expreader setting | 45-114 cm; depends on the required width of fabric. |
Burner gas pressure | 10-15 m bar. |
Another, Santex Relax Dryer (USA):
Machine Parameter | Set-Up value |
Temperature value | 100oc – 110oc for white shade 110oc – 120oc for light shade 120oc – 130oc for dark shade |
Blower fan setting | Push button switch on |
Exhaust fan setting | Push button switch on |
Machine speed | 1-12 m/min; depends on quality of fabric. |
Over feed | 0-45%; depends on fabric consumption. |
Now a day, China and India manufactures various type of textile dryer which is standard in quality also cheap in price.
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