METHOD FOR INCORPORATING SOLIDS FOR THE PRODUCTION OF THERMALLY SENSITIVE POLYMERS IN A PLANETARY ROLLER EXTRUDER

A method for incorporating solids for the production of thermally sensitive polymers in a planetary roller extruder, wherein the planetary roller extruder consists of an atmospherically operated filling and dispersing zone formed of at least one roller cylinder, and of a downstream degassing and coo...

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Bibliographische Detailangaben
1. Verfasser:	MASSOW, Klaus
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING MAKING GRANULES OR PREFORMS PERFORMING OPERATIONS PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A method for incorporating solids for the production of thermally sensitive polymers in a planetary roller extruder, wherein the planetary roller extruder consists of an atmospherically operated filling and dispersing zone formed of at least one roller cylinder, and of a downstream degassing and cooling zone, operated under vacuum and formed of at least one further roller cylinder. The at least one roller cylinder of the filling and dispersing zone is separated from the at least one roller cylinder of the degassing and cooling zone by means of a baffle ring arranged between the roller cylinders. The plasticised polymers within the first third of the roller cylinder are fed within the first third of the roller cylinder to the filling and dispersing zone, wherein solids are added to the plasticised polymers downstream of the filling and dispersing zone via an opening in the at least one roller cylinder, the solids containing at least thermal crosslinking agents. The feed temperatures of the central spindle and of the at least one roller cylinder within the filling and dispersing zone are set such that there is no gelling of the plasticised polymers mixed with the thermal crosslinking agents. The mixture is fed to a coating apparatus.