	US 11,746,472 B2
	Pulp mixture
Irina Rauvanto, Sundea (FI); and Lars Hilden, Norrkoping (SE)
Assigned to BillerudKorsnas AB, Solna (SE)
Appl. No. 16/621,926
Filed by Billerudkorsnas AB, Solna (SE)
PCT Filed Jun. 20, 2018, PCT No. PCT/EP2018/066458 § 371(c)(1), (2) Date Dec. 12, 2019, PCT Pub. No. WO2018/234395, PCT Pub. Date Dec. 27, 2018.
Claims priority of application No. 17177184 (EP), filed on Jun. 21, 2017.
Prior Publication US 2020/0109515 A1, Apr. 9, 2020
Int. Cl. D21H 11/00 (2006.01); D21D 1/20 (2006.01); D21H 27/00 (2006.01); D21J 1/08 (2006.01); D21J 3/10 (2006.01)

CPC D21H 11/00 (2013.01) [D21D 1/20 (2013.01); D21H 27/00 (2013.01); D21J 1/08 (2013.01); D21J 3/10 (2013.01)]

12 Claims

1. A method of forming a container, comprising the steps of:

(a) providing a pulp mixture, the mixture comprising

65-90% by dry weight of a first pulp, which is a resuspended softwood market pulp having an average length-weighted fiber length of above 1.75 mm, and a Schopper-Riegler (SR) number according to ISO 5267-1 of below 48; and

10-35% by dry weight of a second pulp, which is refined resuspended softwood market pulp having an average length-weighted fiber length that is less than the average length of the first pulp, and a Schopper-Riegler (SR) number according to ISO 5267-1 of 60-90; and

(b) forming a container from the pulp mixture in a mold.