Multifunctional controllable multi-layer co- extruded biodegradable mulching film and preparation method thereof
US12207595B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 3, 2024 |
| Grant date | Jan 28, 2025 |
| Priority date | — |
| Expiry date | Jul 3, 2044 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A40/28
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A multifunctional controllable multi-layer co-extruded biodegradable mulching film and a preparation method thereof. The multifunctional controllable multi-layer co-extruded biodegradable mulching film sequentially includes a skeleton layer, a functional layer and a controlled release layer from top to bottom; the skeleton layer, functional layer and controlled release layer are all based on PBAT and PLA (polylactic acid) resin; the raw materials of the skeleton layer also include reinforcing and toughening master batches; the raw materials of the functional layer also include functional master batches; the raw materials of the controlled release layer also include starch-based derivatives. The mulching film is prepared by multi-layer co-extrusion technology.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.