Stenter Machine
Stenter machine: 01
Brand name: Babcock
Company: Babcock teximaschinen GMBH
Origin: Germany
Stenter machine: 02
Brand name: Babcock
Company: Babcock teximaschinen GMBH
Origin: Germany
Stenter machine: 03
Brand name: Montex 5000
Company: Monforts Montex
Origin: Germany
Technical
Information:
1.
Working width: 3m
maximum
2.
Speed: Maximum
100m/min
3.
Capacity of mangle: 100Litre
4.
Padder pressure: 4.0bar
5.
Fabric enterpath: pin and clip combination
6.
Over feeding system range: 10% to 50%
7.
Heating system: Natural
gas burner
8.
Exist system:
batcher and plaiter.
9.
By automatic CV control system heat setting is controlled.
Recipe
for Ready for print:
# whitening
Alkabrite BBU/Alkaphor BMB/
Lencophore BBU: 3gm/L
Front violate SWF: 1 gm/L
#Neutralisationa:
Acetic acid: 1 to 5 gm/L
Alkapol RGN: 0.5
to 1.1 gm/L
Recipe
for Finishing:
Softener:
Super soft SIS 15
gm/L
or Super soft SIE 15 gm/L
or Sapamine CWS 6 gm/L
or Metasoft 10 gm/L
The most common softeners are below:
- Non-ionic Softener
- Anionic Softener
- Cationic Surfactants
- Silicone-Based
Softeners
- Reactive Softeners
Non-ionic Softeners:
Generally ethers and polyglycol esters, oxiethylates
products, paraffins and fats. These softening agents are generally less
efficient than anionic and cationic ones but they withstand the effects of hard
waters, acid or basic environment and also in presence of cations and anions,
therefore the normal fabric care conditions.
Anionic Softeners:
Sulphoricinates, anionic surfactants produced by the
condensation of fatty acids. They have good characteristics as lubricating
softening agents and give the fabric a full hand; they are unstable in hard
waterand acid environment. In addition, they must not cause yellowing at
condensation temperatures.
Cationic Surfactants:
Usually they are quaternary ammonium salts, amino-esters and
amino amides; they are recommended for all types of fibre, and can be also
applied with exhaustion process in acid environment (pH 4-5). These are the
best softening agents and are also called molecular velveting. Agents because
they form bonds with the cationic group on the surface of the fibre generally with
negative electric potential. They can give some problem in presence of large
anions, and they can cause dye toning, or a reduction in fastness to light
values in the presence of direct and reactive dyes; they also have a high
polluting charge as waste water (bactericides).
Silicone-Based Softeners:
These are generally polysiloxane derivatives of low
molecular weight. They are insoluble in water, and therefore must be applied on
fabrics after dissolution in organic solvents, or in the form of disperse
products. They feature quite good fastness to washing. They create a
lubricating and moderately waterproof film on the surface and give fabrics a
velvetysilky hand (desirable for velvets, upholstery fabrics and emerised
fabrics)
Reactive Softeners:
N-methylol derivatives of superior fatty amides or urea
compounds replaced with fatty acids. The products have to be cross-linked and
provide permanent softness and water repellency.
As explained previously, even
though some softeners can be applied with exhaustion processes on yarns, when
softening fabrics, the best technique is the continuous pad-wetting process
followed by a drying stage in a stenter. This treatment must be carried out at
the end of the finishing process; for this reason, softening is usually
performed simultaneously with other dimensional stability processes (width
stabilisation, weft and warp straightening). It is worth remembering that the
use of softeners can reduce the fastness to rubbing of synthetic fibres dyed
with disperse dyes, as the fatty surface layer tend to attract the dye
molecules after hot treatments.
