公开(公告)号：US20180362735A1

公开(公告)日：2018-12-20

申请号：US15736811

申请日：2016-06-16

Applicant: SAPPI Netherlands Services B.V.

Inventor： Wim BALLET ,  Seda CANTEKIN ,  Gustavo DUARTE ,  Saschi MOMIN ,  Jo SIMONS

IPC: C08L1/02 ,  C08J3/09 ,  C08J3/12

Abstract: The present invention provides for a dispersion containing cellulose particles dispersed in a continuous liquid phase comprising a first and a second continuous liquid phase, wherein the first continuous liquid phase consists of a liquid swelling agent or an aqueous solution of said liquid swelling agent, and the second continuous liquid phase comprises, preferably consists of, one or more organic solvents, with the proviso that the one or more organic solvents of the second continuous liquid phase are not capable of dissolving cellulose, have a boiling point higher than the boiling point of the first continuous liquid phase, and are miscible with the constituents of the swelling composition.

公开(公告)号：US20230313466A1

公开(公告)日：2023-10-05

申请号：US18012476

申请日：2021-06-23

Applicant: SAPPI Netherlands Services B.V.

Inventor： Gustavo DUARTE ,  Vera LOURENCO ,  Mario HOLZLECHNER ,  Jo SIMONS

IPC: D21H21/16 ,  D21H21/38 ,  D21H19/12 ,  D21H19/08 ,  D21H19/82 ,  D21H27/10 ,  B65D65/42

CPC classification number: D21H21/16 ,  D21H21/38 ,  D21H19/12 ,  B65D2565/387 ,  D21H19/824 ,  D21H27/10 ,  B65D65/42 ,  D21H19/08

Abstract: A process for improving the barrier properties of a barrier layer in a pulp-based substrate layer having a barrier layer, comprising the steps of providing a pulp-based substrate layer having a layer of an aqueous barrier composition applied to it, and then drying the pulp-based substrate layer having a layer of aqueous barrier composition applied to it to form a pulp-based substrate layer having a barrier layer, such that the moisture content of the pulp-based substrate layer having a barrier layer is below 2.5% by weight, preferably below 2% by weight, based on the weight of the pulp-based substrate layer having a barrier layer.