Calendering of coextruded polymer structures

Marie-Cécile Serrat (1, 2) , Johann Laffargue (1) , Jean-François Agassant (2) , Jérôme Bikard (2)

1 CERDATO - Centre de recherche, développement, applications et technique de l'ouest
2 CEMEF - Centre de Mise en Forme des Matériaux

The velocity and pressure fields that form within the gap of a calender are calculated with onedimensional and two-dimensional isothermal monolayer models. The one-dimensional model simplifies the momentum balance and the continuity equation by the lubrication approximation. Pressure and velocity fields are obtained analytically with this calculation. The velocity and pressure fields are numerically calculated with a two-dimensional model based on Forge®2005. Forge®2005 is based on a Finite Element Method. The pressure field is determined by the gap height, the circumferential speed of the rolls and the rheological behaviour of the polymer. The one and two-dimensional pressure fields are compared.

Mots clés: gap; calender bank; lubrication approximation; Finite Element Method

Domaines: Sciences de l'ingénieur [physics]; Matériaux

Marie-Cécile Serrat, Johann Laffargue, Jean-François Agassant, Jérôme Bikard. Calendering of coextruded polymer structures. 11th ESAFORM Conference on Material Forming, Apr 2008, Lyon, France. pp.Pages 791-794, ⟨10.1007/s12289-008-0294-7⟩. ⟨hal-00510352⟩