Roll-to-roll-imprinting

Jussi Hiltunen; Olli-Heikki Huttunen; Jarno Petäjä; Johanna Hiitola-Keinänen

Roll-to-roll-imprinting

Jussi Hiltunen (Inventor)
, Olli-Heikki Huttunen (Inventor)
, Jarno Petäjä (Inventor)
, Johanna Hiitola-Keinänen (Inventor)

Research output: Patent › Patent

Abstract

The present invention relates to roll-to-roll surface patterning by imprint method. A film of liquid phase resist is coated on a running web and subsequently brought into contact with a rolling replication tool with patterned features on its outer surface. In a simultaneous step, resist is 5 cured typically by heat or UV-light and patterned features on the rolling replication tool are replicated into the resist film during the contact with the replication tool. A major deficiency of conventional roll-to-roll imprinting is the generation of defects in the patterns due to trapped air. To overcome this limitation, the present invention describes a method and 10 apparatus to perform roll-to-roll imprinting under reduced-pressure or vacuum conditions.

Patent family as of 21.7.2026
EP4232873 A1, FI131751 B, FI20206041 A, JP2023547106 T2, US2023398728 AA, WO22084585 A1

Original language	English
Patent number	FI131751 B1
IPC	B29C59/02
Priority date	21/10/20
Filing date	21/10/20
Publication status	Published - 7 Nov 2025
MoE publication type	H1 Granted patent

Cite this

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abstract = "The present invention relates to roll-to-roll surface patterning by imprint method. A film of liquid phase resist is coated on a running web and subsequently brought into contact with a rolling replication tool with patterned features on its outer surface. In a simultaneous step, resist is 5 cured typically by heat or UV-light and patterned features on the rolling replication tool are replicated into the resist film during the contact with the replication tool. A major deficiency of conventional roll-to-roll imprinting is the generation of defects in the patterns due to trapped air. To overcome this limitation, the present invention describes a method and 10 apparatus to perform roll-to-roll imprinting under reduced-pressure or vacuum conditions. Patent family as of 21.7.2026 EP4232873 A1, FI131751 B, FI20206041 A, JP2023547106 T2, US2023398728 AA, WO22084585 A1",

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T1 - Roll-to-roll-imprinting

AU - Hiltunen, Jussi

AU - Huttunen, Olli-Heikki

AU - Petäjä, Jarno

AU - Hiitola-Keinänen, Johanna

PY - 2025/11/7

Y1 - 2025/11/7

N2 - The present invention relates to roll-to-roll surface patterning by imprint method. A film of liquid phase resist is coated on a running web and subsequently brought into contact with a rolling replication tool with patterned features on its outer surface. In a simultaneous step, resist is 5 cured typically by heat or UV-light and patterned features on the rolling replication tool are replicated into the resist film during the contact with the replication tool. A major deficiency of conventional roll-to-roll imprinting is the generation of defects in the patterns due to trapped air. To overcome this limitation, the present invention describes a method and 10 apparatus to perform roll-to-roll imprinting under reduced-pressure or vacuum conditions. Patent family as of 21.7.2026 EP4232873 A1, FI131751 B, FI20206041 A, JP2023547106 T2, US2023398728 AA, WO22084585 A1

AB - The present invention relates to roll-to-roll surface patterning by imprint method. A film of liquid phase resist is coated on a running web and subsequently brought into contact with a rolling replication tool with patterned features on its outer surface. In a simultaneous step, resist is 5 cured typically by heat or UV-light and patterned features on the rolling replication tool are replicated into the resist film during the contact with the replication tool. A major deficiency of conventional roll-to-roll imprinting is the generation of defects in the patterns due to trapped air. To overcome this limitation, the present invention describes a method and 10 apparatus to perform roll-to-roll imprinting under reduced-pressure or vacuum conditions. Patent family as of 21.7.2026 EP4232873 A1, FI131751 B, FI20206041 A, JP2023547106 T2, US2023398728 AA, WO22084585 A1

UR - https://fi.espacenet.com/publicationDetails/biblio?II=0&ND=3&adjacent=true&locale=fi_FI&FT=D&date=20231214&CC=US&NR=2023398728A1&KC=A1

M3 - Patent

M1 - FI131751 B1

Y2 - 2020/10/21

ER -

Roll-to-roll-imprinting

Abstract

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