Multilayer biodegradable mulch and methods for preparing and using the same
US6401390B1 · kind B1 · utility
4Cited by
7References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 4, 2000 |
| Grant date | Jun 11, 2002 |
| Priority date | — |
| Expiry date | Aug 12, 2020 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H23/46
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
This invention relates to a mulch having a preprogrammed biodegradability comprising at least two different layers of biodegradable polymer coated onto a sheet of a cellulosic material, one of these layers being a layer of polylactide. The mulch is particularly useful to control weeds in agriculture, horticulture, and forestry industries. The biodegradability of the mulch can further be preprogrammed according to the type of soil, the climatological zone, and the specific applications wherefore it is intended to be used. The present invention is also directed to methods for preparing and using the multilayer coated mulch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.