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4. Extrusion
4.1 Extruder
The sheet-plate sector is undoubtedly a strong market for single-screw extruders.
Barring exceptional circumstances, there are no bivis, as the market does not lend itself to them:
In general, the raw materials used are simple mixtures (in the qualitative sense) or pre-compounded granules (alloys or blends);
PVC sheets are obtained by calendering.
These markets are too competitive to bear the extra investment and operating costs involved in using a bivis.
It is perfectly feasible to produce sheets directly from the reactor, using appropriate DTS (Direct To Sheet) technology....
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Extrusion
Filter changer
Bibliography
Software tools
Contour TM Die (EDI)
BEMflow, Boundary Element Fluid and Heat Transfer Simulation Program
Inverted preland Die (Cloeren)
Websites
Octal
Rauwendall
The Madison Group
Verbruggen...
Standards and norms
- Management environnemental. Exigences et lignes directrices pour son utilisation. - ISO 14000 - Nov. 2004
- Food safety management systems – Requirements for all organisms in the food chain. - NF EN ISO 22000 - Oct. 2005
Directory
Manufacturers – suppliers (non-exhaustive list)
Robert Barr, Inc.
HPM
Extrusion Dies Industry, LLC
Statistical and economic data
Figure 1 compares the performance of two equivalent systems in terms of instantaneous available flow:
1 production unit, 1,300 kg/h, investment value €1.5 M ;
2 production units...
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