Roller singeing machine the singing surface is a rotating cylinder instead of stationary curved plate. It may be made of either cut cast iron and provided with internal firing system. The fresh hot surface of the cylinder is presented to the cylinder fabric by the slow rotation of the cylinder. The rotation of the cylinder is in the opposite direction of the fabric movement which rises nap ensuring efficient singing.
Demerits
- Unnecessary lecture is produced on the fabric due to the constant content.
- Both roller and plate singing machine produce minor groves on the metal surface by the continuous run of cloth through the machine.
- Cloth singed in roller singing after dyeing the selvedge are found to dye deeper that the body of the cloth.