382
K. S. Kulkarni and R. Adivarekar
Fig. 45 Fabric guiding unit
guiding unit is synchronized with the drive of stenter chain so that there is no shifting
and distortion of the fabric being treated (Fig. 45).
2.7.6 Selvedge Sensor and Rack/Pinion Assembly
The photoelectric detectors of the selvedge sensor operate with infrared light and are
thus not affected by the ambient light. Sensing can also be performed mechanically
by switch over to the mechanical sensors. Depending on the sensing signals, the rack
and pinion assembly alignes the fabric selvedge parallel to the pinning devices.
2.7.7 Selvedge Unculers
This assembly is mainly used to process knitted fabric, which has a tendency to
curl at the edges. The selvedge unculers may be equipped with two, three or four
spindles. These can be either fixed or motor driven threaded spindles. The pivoting
arrangement of the first threaded spindle means that, the wrap angle and thus the
uncurling effect is infinitely variable (Fig. 46).
2.7.8 Fabric Selvedge Glueing Device
This system is typically required for processing of knitted fabric. As the selvedges
of knitted fabric are prone to curling, these are required to be fixed to the tenter chain
by gluing. The application of this glue is done by a device called as fabric selvedge
gluing device. The device consists of a tank containing glue fitted with level sensor
which automatically maintains level of glue in the tank and it also ensures even and
K. S. Kulkarni and R. Adivarekar
Fig. 45 Fabric guiding unit
guiding unit is synchronized with the drive of stenter chain so that there is no shifting
and distortion of the fabric being treated (Fig. 45).
2.7.6 Selvedge Sensor and Rack/Pinion Assembly
The photoelectric detectors of the selvedge sensor operate with infrared light and are
thus not affected by the ambient light. Sensing can also be performed mechanically
by switch over to the mechanical sensors. Depending on the sensing signals, the rack
and pinion assembly alignes the fabric selvedge parallel to the pinning devices.
2.7.7 Selvedge Unculers
This assembly is mainly used to process knitted fabric, which has a tendency to
curl at the edges. The selvedge unculers may be equipped with two, three or four
spindles. These can be either fixed or motor driven threaded spindles. The pivoting
arrangement of the first threaded spindle means that, the wrap angle and thus the
uncurling effect is infinitely variable (Fig. 46).
2.7.8 Fabric Selvedge Glueing Device
This system is typically required for processing of knitted fabric. As the selvedges
of knitted fabric are prone to curling, these are required to be fixed to the tenter chain
by gluing. The application of this glue is done by a device called as fabric selvedge
gluing device. The device consists of a tank containing glue fitted with level sensor
which automatically maintains level of glue in the tank and it also ensures even and