Tag Archives : twin screw


Design of Experiments : how to explore a wide functioning domain

Processing a PBT by twin screw extrusion : how to fix appropriate operating conditions by using numerical simulation

Processing a saturated polyester material This study has been performed by SCC with the support of Proplast, at the occasion of a specific workshop on twin screw extrusion issues, organized by Proplast, in Rivalta Scrivia (Italy). This practical shows the interest of using the numerical simulation for fixing appropriated operating conditions for processing a saturated polyester […]


Conveying Screw

Predicting glass fibers breakage during twin screw extrusion

Glass fibers are compounded with polymers to enhance their mechanical performance since the 1960′s. This performance improvement is depending on the fibers length. Indeed, the longer the fiber is, the more resistant the composite will be. As they are processed by twin screw extrusion, the key point of the process is to save the fibers […]


Starchy Product: Coupling SME and Viscosity for a Better Prediction

The extrusion of starchy products is a tricky process as it modifies the basic structure of the material (loss of the grain structure, degradation of amylose and amylopectin chains…). The objective of this study is to predict with Ludovic® the starch transformation considering the influence of the Specific Mechanical Energy (SME) on the intrinsic viscosity. […]

SME and intrinsic viscosity_calculated vs experimental

Temperature & pressure analysis

Experiments of Classic PP Extrusion

As a classic thermoplastic, the polypropylene (PP) material presents a well known behaviour during the extrusion process. Its behaviour can be easily controlled during extrusion. In this context, the numerical simulation allows to quickly identify the key zones of the process. The PP behaviour in twin screw extrusion has been studied in many publications*. In […]