PROCESSES AND SYSTEMS FOR PRODUCING NANOCELLULOSE FROM OLD CORRUGATED CONTAINERS
Number of patents in Portfolio can not be more than 2000
United States of America
Stats
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N/A
Issued Date -
Feb 6, 2025
app pub date -
Jun 12, 2024
filing date -
Jun 12, 2024
priority date (Note) -
Published
status (Latency Note)
Importance
Abstract
In some variations, OCC is screened, cleaned, deinked, and mechanically refined to generate cellulose nanofibrils. The OCC may be subjected to further chemical, physical, or thermal processing, prior to mechanical refining. For example, the OCC may be subjected to hot-water extraction, or fractionation with an acid catalyst, a solvent for lignin, and water. In certain embodiments to produce cellulose nanocrystals, OCC is exposed to AVAP® digestor conditions. The resulting pulp is optionally bleached and is mechanically refined to generate cellulose nanocrystals. In certain embodiments to produce cellulose nanofibrils, OCC is exposed to GreenBox+® digestor conditions. The resulting pulp is mechanically refined to generate cellulose nanofibrils. The site of a system to convert OCC to nanocellulose may be co-located with an existing OCC processing site. The nanocellulose line may be a bolt-on retrofit system to existing infrastructure. In other embodiments, a dedicated plant for converting OCC to nanocellulose is used.
First Claim
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