Abstract
The present document discloses a method of determining thickness of a wet film, in particular of microfibrillated cellulose. The method comprises conveying said film (20) in a wet state on a conveyor (10) having a conveyor width, the wet film having a film width which is less than the conveyor width, providing a laser projection (1511) across a film edge, acquiring a series of images, each depicting an area of the conveyor, wherein the laser projection, a portion of the film and a portion of an exposed conveyor surface are visible, and using at least some of said images to determine at least one of a film thickness and a film thickness distribution across the film width. The document also discloses a method of forming a film, in particular a microfibrillated cellulose film, and a device for producing such film.
Patent family as of 14.12.2023
BR112022011935A2 20220906 BR20221111935 20201218
CA3165249 AA 20220617 CA20203165249 20201218
CN114867909 A 20220805 CN202080088227 20201218
EP4077801 A1 20221026 EP20200901522 20201218
JP2023506813 T2 20230220 JP20220536559T 20201218
SE201951544 A1 20210621 SE20190051544 20191220
SE543802 C2 20210727 SE20190051544 20191220
US2023003509 AA 20230105 US20220757253 20201218
WO21124251 A1 20210624 WO2020IB62188 20201218
| Original language | English |
|---|---|
| Patent number | US2023003509 A1 |
| IPC | G01N 21/ 84 A I |
| Priority date | 18/12/20 |
| Publication status | Published - 5 Jan 2023 |
| MoE publication type | Not Eligible |