Manufacturing patterned cellulose-based film

Tapio Mäkelä (Inventor)

Research output: PatentPatent


There is provided manufacturing a patterned cellulose-based film. Cellulose-based film to be modified with a pattern provided by a mold is caused to absorb water. The absorbed water causes a volume increase of the cellulose-based film, which causes modifying the cellulose-based film by the cellulose-based film pressing against the mold. Since, the cellulose-based film is pressed against the mold due to swelling caused by water molecules absorbed into the cellulose-based film, the pattern of the mold may be replicated to the cellulose-based film without necessarily requiring any external pressure.

Patent family as of 27.12.2021
EP3921366 A1 20211215 EP20200708530 20200204      
FI128772 B 20201130 FI20190007019 20190207      
FI20197019 A 20200808 FI20190007019 20190207      
WO20161390 A1 20200813 WO2020FI50067 20200204

Link to current patent family on right 

Original languageEnglish
Patent numberEP3921366
IPCD06C 15/ 00 A I
Priority date4/02/20
Publication statusPublished - 15 Dec 2021
MoE publication typeH1 Granted patent


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