	US 12,187,864 B2
	Method for manufacturing films of high consistency nanocellulose suspensions
Vinay Kumar, Espoo (FI); and Aayush Kumar Jaiswal, Espoo (FI)
Assigned to Teknologian tutkimuskeskus VTT Oy, Espoo (FI)
Appl. No. 17/598,914
Filed by Teknologian tutkimuskeskus VTT Oy, Espoo (FI)
PCT Filed Mar. 31, 2020, PCT No. PCT/FI2020/050208 § 371(c)(1), (2) Date Sep. 28, 2021, PCT Pub. No. WO2020/201627, PCT Pub. Date Oct. 8, 2020.
Claims priority of application No. 20195275 (FI), filed on Apr. 5, 2019.
Prior Publication US 2022/0185975 A1, Jun. 16, 2022
Int. Cl. C08J 5/18 (2006.01); B29C 43/00 (2006.01); B29C 43/24 (2006.01); B29C 43/28 (2006.01); B29C 43/30 (2006.01); B32B 5/02 (2006.01); B32B 23/08 (2006.01); B32B 23/10 (2006.01); B32B 27/32 (2006.01); B32B 27/36 (2006.01); C08L 1/02 (2006.01); B29K 1/00 (2006.01); B29L 7/00 (2006.01); B29L 9/00 (2006.01)

CPC C08J 5/18 (2013.01) [B29C 43/003 (2013.01); B29C 43/24 (2013.01); B29C 43/28 (2013.01); B29C 43/305 (2013.01); B32B 5/022 (2013.01); B32B 5/024 (2013.01); B32B 23/08 (2013.01); B32B 23/10 (2013.01); B32B 27/32 (2013.01); B32B 27/36 (2013.01); C08L 1/02 (2013.01); B29K 2001/00 (2013.01); B29L 2007/008 (2013.01); B29L 2009/00 (2013.01); C08J 2301/02 (2013.01); C08L 2205/02 (2013.01)]

19 Claims

1. A method for manufacturing films from nanocellulose comprising:

feeding a nanocellulose suspension comprising modified or unmodified nanocellulose, with or without additives, and having at least 5 wt. % total solids, between two substrates, wherein at least one substrate is porous, to obtain a multi-layered structure, and

passing the multi-layered structure through one or more nips defining controlled gap(s) to form a film, wherein the feeding and passing take place before any drying of the nanocellulose.