公开(公告)号：WO2021260043A1

公开(公告)日：2021-12-30

申请号：PCT/EP2021/067213

申请日：2021-06-23

Applicant: SAPPI NETHERLANDS SERVICES B.V.

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

IPC: D21H19/02 ,  D21H19/08 ,  D21H19/82 ,  D21H27/10

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.

公开(公告)号：EP4481113A3

公开(公告)日：2025-03-19

申请号：EP24211595.4

申请日：2021-06-23

Applicant: SAPPI Netherlands Services B.V.

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

IPC: D21H19/02 ,  D21H19/08 ,  D21H19/82 ,  D21H27/10

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.

公开(公告)号：EP4481113A2

公开(公告)日：2024-12-25

申请号：EP24211595.4

申请日：2021-06-23

Applicant: SAPPI Netherlands Services B.V.

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

IPC: D21H27/10

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.

公开(公告)号：EP4168625A1

公开(公告)日：2023-04-26

申请号：EP21734160.1

申请日：2021-06-23

Applicant: SAPPI Netherlands Services B.V.

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

IPC: D21H19/02 ,  D21H19/08 ,  D21H19/82 ,  D21H27/10