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US 12,163,290 B2Granted
Methods and apparatus for manufacturing fiber-based produce containers
AssigneeFootprint International, LLC
InventorsYoke Dou Chung, Brandon Michael Moore, Yiyun Zhang
Life of this patent
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Abstract
Methods and apparatus for manufacturing a microwavable food container include: forming a wire mesh over a mold comprising a mirror image of the microwavable food container; immersing the wire mesh in a fiber-based slurry bath; drawing a vacuum across the wire mesh to cause fiber particles to accumulate at the wire mesh surface; and removing the wire mesh including the accumulated fiber particles from the slurry bath; wherein the slurry comprises one or more of a moisture barrier, an oil barrier, and a vapor barrier.
Claims14
A method of manufacturing a food container, comprising:
- forming a mesh in the shape of a mold corresponding to the food container;
- immersing the mesh in a fiber-based slurry;
- drawing a vacuum across the mesh to cause fiber particles to accumulate at the mesh surface;
- thereafter removing the mesh and the accumulated fiber particles from the fiber-based slurry;
- drying the accumulated fiber particles to form a food container;
- selectively applying a coating to only a portion of the surface of the food container;
- wherein the fiber-based slurry comprises a moisture barrier component of about 4%;
- and
- wherein the coating comprises an oil barrier coating and a vapor barrier coating.
6 more elements
Dependencies are inferred from the claim text.