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US 10,377,547 B2Granted
Methods and apparatus for in-line die cutting of vacuum formed molded pulp containers
AssigneeFootprint International, LLC
InventorsYoke Dou Chung, Michael Theodore Lembeck
Life of this patent
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Abstract
Methods and apparatus for manufacturing a molded fiber part include: immersing a wire mesh mold in a slurry bath comprising water and fiber particles; drawing a vacuum across the wire mesh mold to cause fiber particles to accumulate at the wire mesh mold surface yielding a molded fiber part; transferring the molded part from the slurry bath to a die press assembly; and drying and die cutting the molded part in the die press assembly.
Claims19
A method of manufacturing a food container, comprising:
- immersing a wire mesh mold in a slurry comprising water and fiber particles;
- drawing a vacuum across the wire mesh mold to cause fiber particles to accumulate at the wire mesh mold surface yielding a molded part;
- transferring the molded part from the slurry bath to a die press assembly having a top die and a bottom die configured to press the molded part therebetween, and a cutting blade;
- and
- extending the blade to thereby die cut the molded part while simultaneously pressing the molded part inside the die press assembly.
2 more elements
Dependencies are inferred from the claim text.