US 12,146,007 B2
Mouldable fibrous sheet and a production method thereof
Isto Heiskanen, Imatra (FI); Mari Hiltunen, Imatra (FI); Nina Ruohoniemi, Imatra (FI); Titta Lammi, Imatra (FI); Ville Ribu, Lappeenranta (FI); Tim Lindfors, Imatra (FI); and Jari Räsänen, Imatra (FI)
Assigned to Stora Enso OYJ, Helsinki (FI)
Appl. No. 17/299,986
Filed by Stora Enso OYJ, Helsinki (FI)
PCT Filed Dec. 4, 2019, PCT No. PCT/IB2019/060419
§ 371(c)(1), (2) Date Jun. 4, 2021,
PCT Pub. No. WO2020/115667, PCT Pub. Date Jun. 11, 2020.
Claims priority of application No. 1851514-8 (SE), filed on Dec. 5, 2018.
Prior Publication US 2022/0298264 A1, Sep. 22, 2022
Int. Cl. C08B 1/00 (2006.01); B29C 64/118 (2017.01); B33Y 10/00 (2015.01); B33Y 70/00 (2020.01); B33Y 80/00 (2015.01); C08B 30/10 (2006.01); C08B 31/00 (2006.01); B29K 1/00 (2006.01)
CPC C08B 1/003 (2013.01) [B29C 64/118 (2017.08); B33Y 10/00 (2014.12); B33Y 70/00 (2014.12); B33Y 80/00 (2014.12); C08B 30/10 (2013.01); C08B 31/00 (2013.01); B29K 2001/00 (2013.01); B29K 2003/00 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A web of fibrous cellulosic material derived from wood pulp, said web being suitable for three-dimensional moulding to form a packaging product, wherein the web comprises:
>40 wt % of soft wood chemical pulp comprising cellulose fibers, and
at least one strength enhancement agent,
wherein the web has a grammage less than 400 g/m2, and
wherein the cellulose fibers of said soft wood chemical pulp comprises a fiber curl of >9%,
wherein said strength enhancement agent comprises a natural binder agent in the form of a starch, at an amount of 10-75 kg/tn.