Biodegradable and biocompatible agricultural mulch and method of preparing same
US6164011A · kind A · utility
8Cited by
6References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 2, 1998 |
| Grant date | Dec 26, 2000 |
| Priority date | — |
| Expiry date | Feb 2, 2018 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H23/46
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The mulch comprises a sheet of paper having a thickness between 2 and 4 mils and a basis weight between about 40 g/m.sup.2 and 60 g/m.sup.2. The sheet has at least one face coated with a layer of polylactide, which is used in an amount such that it weighs between about 2 g/m.sup.2 and 15 g/m.sup.2. The preparation is carried out by depositing on the sheet an amount of a hot extruded liquid layer of polylactide such that when it solidifies, it weighs between about 2 g/m.sup.2 and 15 g/m.sup.2, and allowing the layer to solidify and adhere to the sheet, whereby forming the mulch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.