Acrylate and non-acrylate based chemical compositions for selectively coating fiber-based food containers
US12037749B2 · kind B2 · utility
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32References
6Claims
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Key dates
| Filing date | May 18, 2020 |
| Grant date | Jul 16, 2024 |
| Priority date | — |
| Expiry date | Jul 16, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D81/3453
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Methods and apparatus for vacuum forming and subsequently applying topical coatings fiber-based food containers. The slurry includes one or more of an embedded moisture barrier, vapor barrier, and oil barrier, and the topical coating comprises one or more of a vapor barrier, a moisture barrier, an oil barrier, and an oxygen barrier, for example polyvinyl alcohol, sugar alcohol, citric acid, and cellulose nanofibrils.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.