purging extruder
Dear sir/madam
Our company is active in the field of polymers. The company have several twin screw extruder line that make PEX or XLPE granules by the raw material HDPE. We also add silane and other materials as an additives materials.
L / D unit and has 44 Screw diameter is 95 mm
After producing and when we need to remove material from the Screw, remained material are a kind of gel. Up until now we use direct heat for purging the screw. But this method cause to damage the screws.
Now we are trying to find a new method for purging the screws. If you could suggest a new method, instead of direction heat, please send your information for me. We investigate your method and call you.
Best regard
The following parts have to be cleaned:
Type of
Parts/Tooling
(nozzle, screw, filter etc.) Quantity
per
(day / week / year) Dimensions
(mm)
(length/diameter x width x height) Weight
of Parts
(kilogram) Type of
Polymer
(PE, PVC etc.) Polymer
per Part
(gram)
Screw 3 pair / day 6000/112 150/shaft PE, PP, PA, ABS 0.5 kg/shaft
Filter (screen) 400/day 150x150x150 3 PE, PP, PA, PS, ABS 150gr
Die 15/day 100*400 2 50gr
How long can parts be off line while being cleaned?
Screw : minimum time
Screen : 3 hr
Die : 2 hr
Working time: Supplies available:
• __ days per week gas • oil • steam water
3 shift(s) per day compressed air voltage 380 V 50 Hz
How are parts cleaned until now? Thermal cleaning
Type of polymer:
1. Master Batch : Tio2 , CaCo3 , PE , PP
2. Crosslinkable Polyethylene : PE + Silane
3. Compound : Polyamide (PA) + Glass fiber
4. Hotmelt adhesive : resin , EVA , Wax
By rahmat on Nov 24, 2011 00:13
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