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Decatizing felts and decatizing satin wrappers
For woollen fabrics manufacturing, Dollfus & Muller is supplying decatizing felts with silicone or not, satin fabrics, steamer transport belts, decatizing exit belts and vigoureux printing sleeves.
Continuous decatizing felts
The Dollfus & Muller endless felts are used on these machines. The woven woollen fabrics need to be decatized in order to obtain good dimensional stability and handle. The fabric passes between two felts under hot temperature and steam atmosphere. One of them, the product FINROLL, acts as a conveyor which carries the fabric inside the machine. The second is a heat shrinkable sleeve also called polyester jacket which fits on a perforated steaming drum. Both felts are necessary to improve the handle of the fabric.
The Dollfus & Muller silicone felts are used on high pressure continuous decatizing machines. The woven woollen fabric is carried into the machine and strongly pressed against a hot cylinder. This mechanical action creates saturated steam which is necessary for the finishing of the woollen fabric. The silicone layer acts as an impermeable shield, so that the steam is almost completely applied on the fabric. This kind of finishing gives a high dimensional stability and a very good handle to the processed fabric.
These felts are used on the following decatizing machines : M-TEC (Menschner, Hemmer, Bejitec), Sperotto, Kettling & Braun, Bisio, Biella Shrunk Process, …
| Finishing type | Machines | Description | Quality | Characteristics | |||
|---|---|---|---|---|---|---|---|
| Composition | Thickness (in mm) | Weight (g/m²) | Airflow 'CFM / Cubic Feet/min, under 124 Pa |
||||
| Under pressure continuous decatizing machines |
Supercrab/Multiset 2 Vulcano / Vulcocrab |
For wet environment, Silicone coating and impregnation. Resistant to high pressures / tensions |
FINROLL SI2 | Polyester/ Silicone | 9 | 8200 | 0 |
| Under pressure continuous decatizing machines |
Superfinish / Contipress / Vapofix |
For dry environment, Silicone coating. Resistant to high pressures / tensions |
FINROLL SI | Polyester/ Silicone | 8 | 7900 | 0 |
| Under pressure continuous decatizing machines |
Hemmer Conticrab | For wet environment, Silicone coating and impregnation. |
FINROLL SIH2 | Polyester/ Silicone | 5 | 5400 | 0 |
| Traditional continuous decatizing machines |
Sperotto Multidecat / Superfinish |
Endless transport felt | FINROLL | 100% Polyester | 4 | 2200 | 7 |
| Traditional continuous decatizing machines |
Sperotto Multidecat / Biella Thermoduplex / Superfinish |
Heat-shrinkable sleeve 8 mm thickness | MTR 8 | 100% Polyester | 8 | 2800 | 10 |
| Traditional continuous decatizing machines |
Sperotto Multidecat / Biella Thermoduplex / Superfinish |
Heat-shrinkable sleeve 4 mm thickness | MTR 4 | 100% Polyester | 4 | 1300 | 14 |
| Traditional continuous decatizing machines |
Old machines | Steam resistant needled punched molleton with non marking chamferred edges |
D FIX N | 100% Nomex® (Aramid) fibres |
2,5 | 300 | 100 |
| Traditional continuous decatizing machines |
Old machines | Woven underlayer cloth | 39/1 | 100% Acrylic | 0,6 | 220 | 45 |
Semi-continuous or discontinuous decatizing machines : satin wrappers for KD machines
The Dollfus & Muller satin wrappers are used on the KD machines during wool processing. The woollen fabric is wrapped with the satin fabric around a steam heated drum in lengths from 200 up to 1000 m. In most cases this roll goes into an autoclave, also called KD, for around a 15-20 minutes cycle, and is unwrapped afterwards. The combination of the high pressure steam atmosphere and this decatizing satin gives a good handle to the fabric.
Dollfus & Muller is manufacturing as well the exit belts for the KD decatizers.
These wrappers and exit belts are used on the following machines : KD Biella Shrunk Process, TMT, Gessner, Moers, Singer, …
| Description | Quality | Characteristics | ||||
|---|---|---|---|---|---|---|
| Composition (Wa : Warp / We : Weft) | Number of picks/cm | Width (in cm) | Weight (g/m²) | Airflow (CFM : Cubic Feet/min, under 124 Pa) |
||
| High quality of satin wrapper | DN 3000 | Wa : Polyester / Cotton (65%/35%) We : Cotton / Polyamide (75%/25%) |
132 +/- 2 | 177 | 420 | 6 |
| Standard quality of satin wrapper | DN 2500 | Wa : Polyester / Cotton (60%/40%) We : Polyester / Cotton (55%/45%) |
139 +/- 2 | 177 | 415 | 6 |
| High quality molleton | K5 | Wa : Cotton / Polyamide (75%/25%) We : Cotton (100%) |
34 +/- 2 | 176 | 550 | 11 |
| Steam resistant needle punched molleton underlayer |
HZ 40 | 100% Nomex® (Aramid) fibres | - | 180 | 390 | 62 |
Belts for Steaming machines / Spongers Dryers
The Dollfus & Muller conveyor belts are used in order to convey the woollen fabrics inside these machines. This steamer improves handle and creates shrinkage to the woollen fabrics using steam. The steamer belts can also be used at the exit of the discontinuous and continuous decatizing machines as a decatizor exit belt, in order to assist the fabric to exit the machine and to be cooled.
These conveyor belts are used on the following machines : Sperotto, KD Biella Shrunk Process, Stalam, Krantz,…
| Machine types | Belt types | Description | Recommended belts | Characteristics | ||||
|---|---|---|---|---|---|---|---|---|
| Insight | Quality | composition | Maximum Working T° | Airflow (CFM : under 124 Pa) | Steam Resistance |
|||
| Steaming machines | RIGID | Smooth surface |  |
TAMIP GT 40 | Fibreglass coated with PTFE |
260°C 500°F |
1900 | - |
| Steaming machines | FLEXIBLE | Ideal belt for transportation |  |
TAMIP C 928 | 100% Polyester | 150°C 300°F |
1400 | ++ |
| Steaming machines | FLEXIBLE | Smooth surface and limited dimensional stability |
 |
TAMIP C 900 | 100% Polyester | 150°C 300°F |
1570 | ++ |
| Steaming machines | FLEXIBLE | Reinforced spiraled belt. Very high stability |
 |
TAMIP Multiclip 80 |
100% Polyester | 150°C 300°F |
1100 | ++ |
| Decatizing machine exit belt |
FLEXIBLE | High grip surface recommended for inclined exit |
|
TAMIP C 928 | 100% Polyester | 150°C 300°F |
1400 | ++ |
- None ++ Strong
Felt sleeves for Vigoureux printing machines
Dollfus & Muller woollen sleeves are used in these machines. This process allows the dyeing of the woollen yarns.
| Description | Quality | Characteristics | |||
|---|---|---|---|---|---|
| Composition | Maximum working T° | Thickness (in mm) | Weight (g/m²) | ||
| Felted woven sleeve | Q1G1 | 100% wool | 130°C / 270° F | 6 | 2500 |
Dollfus-Muller-for-Woollen-fabrics-finishing.pdf