Patent ID: 11965291
Assignee: MONDI AG
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC D | IPC D

Claim 0:
1. Packaging paper consisting of an unbleached kraft paper with a kappa value according to ISO 302:2015 of between 38 and 60, as base paper, which is optionally coated on at least one side, the kraft paper being made of at least 90% primary pulp, having a basis weight according to ISO 536:2019 of between 60 g/m2 and 150 g/m2 and an air resistance according to ISO 5636-5:2013 (Gurley) of between 5 and 30 seconds, wherein the primary pulp contained in the base paper comprises at least 80% pulp with an average length-weighted fiber length according to ISO 16065-2:2014 of between 2.0 mm and 2.9 mm and less than 4.5% fillers as well as cationic starch in an amount of 0.5% by weight % to 1.5% by weight of the base paper, and contains other processing agents, that the base paper has an elongation at break in the machine direction according to ISO 1924-3:2005 of between 2.5% and 8.5%, and in that the packaging paper has a Bendtsen roughness according to ISO 8791-2:2013 of between 70 ml/min and 600 ml/min.