- squeezer AS/CA
detwisters-squeezers type AS/CA have given great benefit in the
processing of tubular knitted fabrics between the dyeing and drying
operations. Fabric handling is reduced considerably compared to
traditional methods such that the only manual operation required
is the sewing together of adjoining fabric pieces.
processing benefits are achieved with the AS/CA with its provision
for fabric straightening and the facility for addition of certain
finishes in the wetting out bath.
AS/CA machine, available in several models, can perform the following
fabric twisting arising during dyeing
uniform water distribution prior to squeeze
the appearance of the knitted loop structure by the air injection
and balloon inflation system
tubular fabric in spread plainted form ready for drying
fabric creasing caused in traditional hydroextraction by centrifuge.
machine can be supplied with standard rubber squeeze rollers or
rollers with special covering for improved hydroextraction.
Machine can be supplied with or without fabric expanders.
Machine can be supplied to process single rope or two ropes in parallel.
picture above on the left shows a rope of dyed fabric being immersed
in the wet-out bath then inflated by air injection. The resulting
balloon is squeezed in the upper mangle. Water running along the
fabric surface provides a seal to the air balloon. Maximum speed
is 50 metres per minute.
The picture on the right shows an AS/CA seen from the plaiter side.
the pictures above is shown:
1. An AS/CA machine from the inlet side. The squeeze rollers can
be rubber or "Roberto" type: the latter ensure a residual
water content very close to that archived by centrifuge hydroextraction.
A twin AS/CA-d machine: first it squeezes the wet tubular fabric
and then presents it to the second stage for an addition of finish
in the wet-out tank. Notice that a film of process liquor continuously
flows across both outer and inner surface of the tubular fabric,
thus providing uniform distribution throughout the fabric. The second
squeeze acts as a pad mangle to provide residual uniformity of finish
on the fabric.
double squeeze process also ensures that the finishing bath is not
diluted by the wet fabric, as surplus moisture has been removed
by the first squeezer.
A twin AS/CA-D-AM machine with mechanical expander seen from the
diagram of an AS/CA with turntable driven by twist detectors. Note
the machine, the twist detectors, the twist detection controller,
the turntable carrying the fabric trolley prior to process.
When rotating trollies are used, the platform is replaced by a motorized
rubber drive wheel.