EP 4067567 A4 20230125 - SHREDDING METHOD AND DEVICE FOR OBTAINING NANOCELLULOSE
Title (en)
SHREDDING METHOD AND DEVICE FOR OBTAINING NANOCELLULOSE
Title (de)
ZERKLEINERUNGSVERFAHREN UND VORRICHTUNG ZUR HERSTELLUNG VON NANOCELLULOSE
Title (fr)
PROCÉDÉ DE DÉFIBRAGE ET DISPOSITIF D'OBTENTION DE NANOCELLULOSE
Publication
Application
Priority
- ES 201931057 A 20191128
- ES 2020070733 W 20201125
Abstract (en)
[origin: EP4067567A1] A shredding method and a device for obtaining nanocellulose are proposed. By means of the combination of several steps through which a solution (1) passes, said solution consisting of a mixture of bleached cellulose diluted in water in a proportion of between 1% and 6% of bleached cellulose which is subjected to a pressure of between 250 and 600 bar, in order to accelerate the solution (1) so as to reach a speed of about 50 m/s-250 m/s in a nozzle (3) through the passage (4) thereof, the solution (1) subsequently being expanded and decompressed, causing it to collide against same, and thereby obtaining the nanocellulose. The device is made up of the combination of a compression chamber (2), including a compressor (12), and a nozzle (3) having a passage (4), wherein on the opposite side of the nozzle (3), there is arranged another receiving chamber (7) which has a dead center (8) and a decompressor (13).
IPC 8 full level
CPC (source: EP ES)
Citation (search report)
[A] NECHYPORCHUK OLEKSANDR ET AL: "Production of cellulose nanofibrils: A review of recent advances", INDUSTRIAL CROPS AND PRODUCTS, ELSEVIER, NL, vol. 93, 19 February 2016 (2016-02-19), pages 2 - 25, XP029750484, ISSN: 0926-6690, DOI: 10.1016/J.INDCROP.2016.02.016
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4067567 A1 20221005; EP 4067567 A4 20230125; EP 4067567 B1 20240710; ES 2829173 A1 20210528; WO 2021105538 A1 20210603
DOCDB simple family (application)
EP 20894510 A 20201125; ES 201931057 A 20191128; ES 2020070733 W 20201125