Process for the film-coating of seed materials

Details Process for the film-coating of seed materials Process for the film-coating of seed materials

1991-04-05

1992-02-11

Beck, Shrive

Coating processes

Plant member or animal specimen coating

47 576, 118303, A01N 300

Patent

active

050874756

ABSTRACT:
A batch of seed materials is film-coated with a gas- and water-permeable, thin, adherent, uniform non-phytotoxic continuous surface film of a polymeric film-former, by (a) establishing and continuously maintaining a unit compact volume of moisture-containing viable seed materials in a state of continuous agitation and (b) continuously spraying and coating this unit compact volume of seed materials with an adjusted essentially steady predetermined flow rate of a liquid solution or suspension of a polymeric film-former, while simultaneously (i) continuously positively drying the coated seed materials by continuously directing a predetermined flow rate of a gaseous feedstream thereagainst that is at a controlled temperature less than that would adversely affect the viability thereof, (ii) continuously monitoring the temperature within the unit compact volume of seed materials in a state of continuous agitation and (iii) continuously maintaining a moisture content in the final product coated seed materials essentially at the same level as that in the uncoated seed materials, and whereby (c) the final product film-coated seed materials have essentially the same shapes as the corresponding uncoated seed materials.

REFERENCES:
patent: 2944512 (1960-07-01), Wilson
patent: 3422792 (1969-01-01), Glatt
patent: 3573966 (1971-04-01), Hostetler
patent: 3934545 (1976-01-01), Schady
patent: 4326480 (1982-04-01), Rollette
patent: 4465017 (1984-08-01), Simmons
patent: 4639383 (1987-01-01), Casey
patent: 4644665 (1987-02-01), Naunapper et al.
patent: 4658754 (1987-04-01), Messner et al.

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