Device for Filling an Extruder with Pretreated Thermoplastic Material
First Claim
1. A device for filling an extruder (36) with pretreated thermoplastic plastics material, in particular PET, comprising at least one evacuatable container (1) in which moving, in particular rotating, tools (7) are provided for pretreatment of the material, wherein the pretreatment comprises drying and, optionally, crystallisation or partial crystallisation of the material, and wherein each container (1) has a discharge opening (18) for the preferably at least partly crystallised material, which discharge opening (18), with respect to the material, is fluidically connected to the filling opening (35) of the extruder (36), characterised in that a transfer section (31), which maintains the flowable state of the material pretreated in the containers (1), is connected to the outlet opening (18) of the containers (1) so as to form a sealed fluidic connection for the material, the containers (1) optionally forming a plurality of container stages, and in that this transfer section (31) has, at its outlet, a coupling (69) which is directly connectable in a sealed manner to the filling opening (35) of the extruder (36).
1 Assignment
0 Petitions
Accused Products
Abstract
A device for filling an extruder, which can optionally be an external extruder, with pretreated thermoplastic plastics material, in particular PET, has at least one evacuatable container (1) in which moving, in particular rotating, tools (7) are provided for pretreatment of the material. This pretreatment comprises drying and, optionally, crystallisation. Each container (1) has a discharge opening (18) for the flowable material (12), which discharge opening (18), with respect to the material, is fluidically connected to the filling opening (35) of the extruder (36). The device preferably has only a single container stage, the outlet of which is fluidically connected to a coupling (69), which is connectable to the filling opening (35) of the extruder (36), via a transfer section (31) maintaining the flowable state of the material (12) pretreated in the container (1) (FIG. 1).
68 Citations
22 Claims
- 1. A device for filling an extruder (36) with pretreated thermoplastic plastics material, in particular PET, comprising at least one evacuatable container (1) in which moving, in particular rotating, tools (7) are provided for pretreatment of the material, wherein the pretreatment comprises drying and, optionally, crystallisation or partial crystallisation of the material, and wherein each container (1) has a discharge opening (18) for the preferably at least partly crystallised material, which discharge opening (18), with respect to the material, is fluidically connected to the filling opening (35) of the extruder (36), characterised in that a transfer section (31), which maintains the flowable state of the material pretreated in the containers (1), is connected to the outlet opening (18) of the containers (1) so as to form a sealed fluidic connection for the material, the containers (1) optionally forming a plurality of container stages, and in that this transfer section (31) has, at its outlet, a coupling (69) which is directly connectable in a sealed manner to the filling opening (35) of the extruder (36).
-
22. A device for filling an extruder with pretreated thermoplastic plastics material comprising at least one evacuatable container having moving tools for pretreating the material by drying and at least partially crystallizing the material and a discharge opening for the at least partly crystallized, flowable material which, with respect to the material, is fluidly connected to a filling opening of the extruder;
- a transfer section for the flowable material pretreated in the containers sealingly connected to the discharge opening and forming a fluid connection for the material, the transfer section having an outlet;
a coupling for directly and sealingly connecting the outlet to the filling opening of the extruder, the transfer section including a metering device for filling the extruder and a level control unit, and wherein the level control unit controls at least one of the metering device and a volume of the material transported by the metering device as a function of the degree to which the extruder is filled with the material.
- a transfer section for the flowable material pretreated in the containers sealingly connected to the discharge opening and forming a fluid connection for the material, the transfer section having an outlet;
Specification