Granulation processing method for low-melt-index degradable material, and shaped body prepared thereby
US12427696B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 19, 2023 |
| Grant date | Sep 30, 2025 |
| Priority date | — |
| Expiry date | May 19, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2067/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present application relates to the technical field of processing of degradable materials, and in particular to a granulation processing method for a low-melt-index degradable material, and a shaped body prepared thereby. The granulation processing method for the degradable material provided by the present invention comprises: reducing the temperature of a screw rod for multiple times and increasing the rotating speed of the screw rod during an extrusion crystallization granulation process. The granulation processing method provided by the present invention is beneficial to improving the crystallization rate of the material during the granulation processing process, and reduces the influence caused by shear heat and relatively high processing temperature, thereby obtaining a granular material having a lower melt index.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.