Français
4. Drawing stage
4.1 Thermostated roller
The dimensions of the thermostatically controlled roll must be determined in relation to the overall throughput of the production line, to ensure even film cooling. Design parameters depend on the extruded polymer, film dimensions and machine speed range. The extruded film is cooled on the thermostatically controlled roll, which can have a diameter of between 400 and 1,200 mm, depending on the line size. The internal structure of the roll is designed to achieve the required cooling capacity with maximum thermal stability. The surface finish of the roll (which is chosen to a certain extent according to the nature of the polymer being processed) is generally highly polished (roughnesses of less than 0.3 µm are typical), but for high line speeds, surface matting...
The Ultimate Scientific and Technical Reference
This article is included in
Plastics and composites
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Drawing stage
Limits of the flat film extrusion process
References
Machine manufacturers (non-exhaustive list)
Axon Plastics Machinery AB
Battenfeld Gloucester Europe Ltd
Berstorff GmbH
Black Clawson Converting Machinery LLC
Brückner Maschinenbau GmbH
Collin Dr, GmbH
Davis Standard France
Dolci Extrusion SpA
...
Theses
- - http://www.sudoc.abes.fr
- SOLLOGOUB (C.) - Étude du procédé d'extrusion couchage de films polymères sur tôle d'acier. - École nationale supérieure des mines (2003).
The Ultimate Scientific and Technical Reference
