Coating layer for paper and board using dissolved cellulose

Vesa Kunnari; Ali Harlin; Pauliina Ahokas; Hannes Orelma

Coating layer for paper and board using dissolved cellulose

Vesa Kunnari (Inventor)
, Ali Harlin (Inventor)
, Pauliina Ahokas (Inventor)
, Hannes Orelma (Inventor)

Research output: Patent › Patent

Abstract

According to an example aspect of the present invention, there is provided method for manufacturing a barrier layer on top of a paper or carton board from dissolved cellulose, which combines the benefits of the raw material, improved casting method and replacement of sulphuric acid with sodium carbonate or sodium hydrogen carbonate in regeneration bath.

Patent family as of 17.7.2026
BR112024022949 A2, CL2024003316 A1, EP4526515 A1, FI131693 B, FI20225448 A, US2025283277 AA, WO23222955 A1

Original language	English
Patent number	FI131693 B1
IPC	C08J5/18
Priority date	20/05/22
Filing date	20/05/22
Publication status	Published - 24 Sept 2025
MoE publication type	H1 Granted patent

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 9 Industry, Innovation, and Infrastructure

Cite this

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abstract = "According to an example aspect of the present invention, there is provided method for manufacturing a barrier layer on top of a paper or carton board from dissolved cellulose, which combines the benefits of the raw material, improved casting method and replacement of sulphuric acid with sodium carbonate or sodium hydrogen carbonate in regeneration bath. Patent family as of 17.7.2026 BR112024022949 A2, CL2024003316 A1, EP4526515 A1, FI131693 B, FI20225448 A, US2025283277 AA, WO23222955 A1 ",

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T1 - Coating layer for paper and board using dissolved cellulose

AU - Kunnari, Vesa

AU - Harlin, Ali

AU - Ahokas, Pauliina

AU - Orelma, Hannes

PY - 2025/9/24

Y1 - 2025/9/24

N2 - According to an example aspect of the present invention, there is provided method for manufacturing a barrier layer on top of a paper or carton board from dissolved cellulose, which combines the benefits of the raw material, improved casting method and replacement of sulphuric acid with sodium carbonate or sodium hydrogen carbonate in regeneration bath. Patent family as of 17.7.2026 BR112024022949 A2, CL2024003316 A1, EP4526515 A1, FI131693 B, FI20225448 A, US2025283277 AA, WO23222955 A1

AB - According to an example aspect of the present invention, there is provided method for manufacturing a barrier layer on top of a paper or carton board from dissolved cellulose, which combines the benefits of the raw material, improved casting method and replacement of sulphuric acid with sodium carbonate or sodium hydrogen carbonate in regeneration bath. Patent family as of 17.7.2026 BR112024022949 A2, CL2024003316 A1, EP4526515 A1, FI131693 B, FI20225448 A, US2025283277 AA, WO23222955 A1

UR - https://fi.espacenet.com/publicationDetails/biblio?II=0&ND=3&adjacent=true&locale=fi_FI&FT=D&date=20231121&CC=FI&NR=20225448A1&KC=A1

M3 - Patent

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ER -

Coating layer for paper and board using dissolved cellulose

Abstract

UN SDGs

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