Abstract

A method for extrusion of polymer products, comprising a stage of preparing a base mixture in a turbomixer (2) which base mixture contains polymer powders and at least an additive, and a stage of introducing the base mixture into at least an extruder 810), via a mixer (6) into which an additional quantity of the additive and/or at least a further additive is introduced.

IPC Classes  ?

• B29B 7/74 - MixingKneading using other mixers or combinations of dissimilar mixers
• B29B 7/60 - Component parts, details or accessoriesAuxiliary operations for feeding, e.g. end guides for the incoming material
• B29B 7/90 - Fillers or reinforcements
• B29C 47/10 - Feeding the material to the extruder

Abstract

A plant for transporting loose solid material by means of a vector fluid, comprising a conveyor line (20, 3) of the material to be transported, means (4) for establishing internally of the conveyor line (20, 3) a vector fluid current, and a first dispensing device (21 ) for cyclically releasing a predetermined quantity of material to be transported at an intermediate point in the conveyor line (20, 3), wherein it comprises at least a second dispensing device (21), located in series with the first dispensing device (21 ) along the conveyor line (20, 3), which second dispensing device (21) cyclically releases a predetermined quantity of material to be transported at an intermediate point of the conveyor line (20, 3), in an alternating order with the first dispensing device (21 ).

IPC Classes  ?

• B65G 53/12 - Gas pressure systems operating without fluidisation of the materials with pneumatic injection of the materials by the propelling gas the gas flow acting directly on the materials in a reservoir
• B65G 53/22 - Gas pressure systems operating with fluidisation of the materials through a porous wall the systems comprising a reservoir, e.g. a bunker