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US 2011/0214466 A1Published application
Controlled Release Fertilizers and Methods of Manufacture
AssigneeCellulosetek, LLC
InventorSantosh Yadav
Life of this patent
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Abstract
A method of manufacturing a controlled release fertilizer wherein the fertilizer is deposited onto a first polymer film and then covered by a second polymer film to encapsulate the fertilizer between the first polymer film and the second polymer film.
Claims28
A method of manufacturing a controlled release fertilizer, said method comprising the steps of:
- depositing a plurality of fertilizer droplets onto a first polymer film, wherein the fertilizer droplets are hemispherical;
- and
- applying a second polymer film onto the fertilizer droplets to encapsulate the fertilizer droplets between the first polymer film and the second polymer film such that the fertilizer droplets are releasable over time by diffusion through at least one of the first polymer film or the second polymer film.
A method of manufacturing a controlled release fertilizer, said method comprising the steps of:
- depositing a plurality of fertilizer droplets onto a first polymer film, wherein the fertilizer droplets are hemispherical;
- cooling and hardening the fertilizer droplets by passing them through a first cooling zone;
- heating the fertilizer droplets by passing them through a heating zone to help remove any moisture present on the first polymer film;
- applying a second polymer film onto the fertilizer to encapsulate the fertilizer between the first polymer film and the second polymer film such that the fertilizer droplets are releasable over time by diffusion though at least one of the first polymer film or the second polymer film;
- statically charging the first and second polymer films to help fuse them together;
- and
- cooling and hardening the encapsulated fertilizer droplets by passing them through a second cooling zone.
4 more elements
A method of manufacturing a controlled release fertilizer, said method comprising the steps of:
- depositing a plurality of fertilizer droplets onto a first polymer film, wherein the fertilizer droplets are hemispherical;
- moving the first polymer film through the manufacturing process on a conveyor belt;
- cooling the fertilizer droplets by passing them through a first cooling zone which sprays cool water on the underside of the conveyor belt;
- heating the fertilizer droplets by passing them through a heating zone which sprays hot water on the underside of the conveyor belt;
- applying a second polymer film onto the fertilizer to encapsulate the fertilizer between the first polymer film and the second polymer film such that the fertilizer droplets are releasable over time by diffusion though at least one of the first polymer film or the second polymer film;
- and
- cooling the encapsulated fertilizer droplets by passing them through a second cooling zone which sprays cool water on the underside of the conveyor belt.
4 more elements
Dependencies are inferred from the claim text.