Device and method for online preparation of modified polylactic acid material with polylactic acid melt
US11130259B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 29, 2020 |
| Grant date | Sep 28, 2021 |
| Priority date | — |
| Expiry date | Dec 29, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/03
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present disclosure relates to the technical field of polymer material, and discloses a device and method for online preparation of a modified polylactic acid material with a polylactic acid melt. The device comprises a twin-screw extruder, a first solid modifier hopper, a polylactic acid melt pipeline and a polylactic acid melt feedstock metering pump, wherein the first solid modifier hopper is connected with Zone I of the twin-screw extruder, the polylactic acid melt pipeline is connected with Zone IV of the twin-screw extruder. The method for online preparation of modified polylactic acid material with the device can avoid degradation of the polylactic acid caused by the secondary processing, improve mechanical property of the prepared polylactic acid and reduce production cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.