Barrier layer for cellulose substrate
US12071726B2 · kind B2 · utility
0Cited by
9References
7Claims
0Family size
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Key dates
| Filing date | Apr 20, 2020 |
| Grant date | Aug 27, 2024 |
| Priority date | — |
| Expiry date | Jan 4, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W90/10
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In a method for the production of coated substrates, a flowable, biologically degradable first coating which enhances gas tightness is applied to a cellulose-containing substrate. To obtain a packaging consisting only of natural components and offering good tightness, a second watertight coating made of animal and/or vegetable waxes and/or lipids is applied to the first coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.