Laminar seed carriers and method of preparing same
US4173844A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 6, 1978 |
| Grant date | Nov 13, 1979 |
| Priority date | — |
| Expiry date | Jan 6, 1998 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01C1/044
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of preparing a laminar seed carrier in which a support comprising an unsized or lightly sized paper web of tangled short, smooth individual fibres is provided with one or more patches of an adhesive substance, seeds are applied to the patch or patches of adhesive substance, an upper paper web comprising a porous web having a lower weight than the support paper web is placed over the seeds and bonded to the support paper web and is treated with one or more powdered water-storing substances to incorporate the powdered water-storing substances within the pores of the upper paper web. Also provided is a laminar seed carrier comprising an unsized or lightly sized support paper web of tangled short, smooth individual fibres, bearing one or more patches of an adhesive substance upon which seeds are bonded and an upper paper web, comprising a porous web having a lower weight than the support web covering the seeds and being bonded to the support web, the upper paper web having one or more powdered water-storing substances entrapped within its pores.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.