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US 2023/0407568 A1Published application
Pulp Mixture
AssigneeBillerudkorsnas AB
InventorsIrina Rauvanto, Lars Hilden
Life of this patent
Estimating the term…
Abstract
There is provided a use of a pulp mixture for forming a container in a mould, which pulp mixture comprises: 65-90%, such as 70-84%, by dry weight of a first pulp having a Schopper-Riegler (SR) number of below 48, preferably below 40, more preferably below 30; and 10-35%, such as 16-30%, by dry weight of a second pulp having a Schopper-Riegler (SR) number of 60-90, preferably 70-90, more preferably 77-90. A pulp mixture and a method of producing a pulp mixture are also provided.
Claims23
1-15. (canceled)
A container that comprises a pulp mixture, the pulp mixture including:
- 65-90%-by dry weight of a first pulp having a Schopper-Riegler (SR) number according to ISO 5267-1 of below 48;
- and
- 10-35% by dry weight of a second pulp having a Schopper-Riegler (SR) number according to ISO 5267-1 of 60-90.
A method comprising the steps of:
- a) providing a first pulp having a Schopper-Riegler (SR) number according to ISO 5267-1 of below 48;
- b) subjecting a first part of the first pulp to low consistency (LC) refining to obtain a second pulp having a Schopper-Riegler (SR) number according to ISO 5267-1 of 60-90;
- c) mixing a second part of the first pulp with the second pulp in such proportions that a pulp mixture comprising 65-90% by dry weight of the first pulp and 10-35%, by dry weight of the second pulp is obtained.
Dependencies are inferred from the claim text.