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3. Extruder operation
The extruder is a machine that conveys and processes solid or liquid products by means of one or more screws rotating in a barrel, and forces them continuously into an extrusion head.
The materials mixed and plasticized as they are transferred into the sheath can be heated, cooled (sometimes) and degassed; they can pass through a filter before being extruded using a die or a die and punch.
The characteristics of extruders (figure 3 ) vary according to the nature and flow rates of the material to be processed.
characteristics of a machine used to process plastics and elastomers.
Screw diameter: 120 mm.
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References
INRS publications
Regulations
EEC Directives 89/392/EEC modified by 93/44/EEC, 93/68/EEC, 98/37/EC and 2006/42/EC
Standards and norms
French Standards Association (AFNOR) http://www.boutique.afnor.fr
- Machine safety – Safety distances to prevent upper limbs from reaching danger zones. Classification number: E09-010 - NF EN 294 - 09-92
- Machine safety – Emergency stop – Design principles. Classification number : E09-053 - NF EN ISO 13850 - 01-07 ...
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Organizations – Federations – Associations (non-exhaustive list)
AFICEP (French Association of Rubber and Polymer Engineers and Managers) http://www.aficep.com
AFNOR (Association Française de Normalisation) www.afnor.fr
ASTM International...
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