Developments in Textile Continuous Processing Machineries
363
Fig. 16 Line diagram of Dip sat (Goller)
Dip Sat (Goller)
The technology developed by Goller for desizing is known as Dip sat. The set up
involves a compartment in which 17-m fabric is treated. The line diagram is as shown
in Fig. 16. The arrangement of rollers is in such a way that the fabric is impregnated
three times. This gives good penetration of desizing liquor to the core of the fabric.
The complete penetration of liquor in the fabric results in effective removal of size
from the fabric resulting in even pre-treatment.
2.4.2 Squeezer
An impregnated fabric is then led between a rubber coated roller and an ebonite
roller. The two rollers are pressed together to squeeze out the excess liquor from the
fabric, which runs back into the impregnation tank. The squeezing effect depends on
hardness of the rubber coating and squeezer pressure. Usually, pick up is in the range
of 90–120% depending on the quality of fabric and size applied. The fabric treated
at this stage is greige fabric and it is not absorbent enough. Thus, more the amount
of desizing liquor that is applied on the fabric, more efficient desizing operation can
be. Hence, usually, instead of applying pressure, only dead weight of roller is used
to squeeze excess liquor.
S-Wrap Squeezer (Goller)
• Defined liquor with pick up above 100% results in excellent degree of desizing
• Slip-free and crease-free fabric transport.
363
Fig. 16 Line diagram of Dip sat (Goller)
Dip Sat (Goller)
The technology developed by Goller for desizing is known as Dip sat. The set up
involves a compartment in which 17-m fabric is treated. The line diagram is as shown
in Fig. 16. The arrangement of rollers is in such a way that the fabric is impregnated
three times. This gives good penetration of desizing liquor to the core of the fabric.
The complete penetration of liquor in the fabric results in effective removal of size
from the fabric resulting in even pre-treatment.
2.4.2 Squeezer
An impregnated fabric is then led between a rubber coated roller and an ebonite
roller. The two rollers are pressed together to squeeze out the excess liquor from the
fabric, which runs back into the impregnation tank. The squeezing effect depends on
hardness of the rubber coating and squeezer pressure. Usually, pick up is in the range
of 90–120% depending on the quality of fabric and size applied. The fabric treated
at this stage is greige fabric and it is not absorbent enough. Thus, more the amount
of desizing liquor that is applied on the fabric, more efficient desizing operation can
be. Hence, usually, instead of applying pressure, only dead weight of roller is used
to squeeze excess liquor.
S-Wrap Squeezer (Goller)
• Defined liquor with pick up above 100% results in excellent degree of desizing
• Slip-free and crease-free fabric transport.