Process and apparatus for compounding and injection-moulding desiccant-filled polymers
US7744788B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2008 |
| Grant date | Jun 29, 2010 |
| Priority date | — |
| Expiry date | Jul 31, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2945/76832
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Disclosed is an injection moulding machine, comprising an extruder for continuously producing a melt of a desiccant-filled polymer; at least one injection device fluidly connected with the extruder by a first conduit to receive melt and including an injection ram movable to a forward position for injection of melt into an injection mould and a rear position for introduction of melt into the injection device; characterized in that the injection moulding machine further comprises a sensor which allows determination of the viscosity or melt flow index of the desiccant-filled polymer. Further disclosed is a method of operating such a compounder-type injection moulding machine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.