Boosting the cross-machine direction shrinkage and extensibility of a fiber product

Elias Retulainen; Jarmo Kouko

Boosting the cross-machine direction shrinkage and extensibility of a fiber product

Elias Retulainen (Inventor)
, Jarmo Kouko (Inventor)

BA5406 Soft matter

Research output: Patent › Patent

Abstract

The present invention concerns a method for modifying a fiber network of a fiber web, typically made of a cellulose-based pulp, in order to increase the drying shrinkage as well as boost the cross-machine direction (CD) extensibility of the thus prepared fiber product. The method includes the steps of imposing a three-dimensional pattern in the wet fiber web, and drying the web using evaporative drying while allowing the web to shrink without major restraints. The pattern is imposed on the web in the forming section or after the forming section, before evaporative drying, while utilizing the wet elongation of the web for the shapes of the pattern, thereby not affecting the width of the wet web. The invention also concerns the formed fiber product having an increased CD extensibility.

Patent family as of 17.7.2026
EP4519495 A1, FI131732 B, FI20225377 A, US2025347057 AA, WO23214114 A1

Original language	English
Patent number	FI131732 B1
IPC	D21F11/12
Priority date	2/05/22
Filing date	2/05/22
Publication status	Published - 22 Oct 2025
MoE publication type	H1 Granted patent

Cite this

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abstract = "The present invention concerns a method for modifying a fiber network of a fiber web, typically made of a cellulose-based pulp, in order to increase the drying shrinkage as well as boost the cross-machine direction (CD) extensibility of the thus prepared fiber product. The method includes the steps of imposing a three-dimensional pattern in the wet fiber web, and drying the web using evaporative drying while allowing the web to shrink without major restraints. The pattern is imposed on the web in the forming section or after the forming section, before evaporative drying, while utilizing the wet elongation of the web for the shapes of the pattern, thereby not affecting the width of the wet web. The invention also concerns the formed fiber product having an increased CD extensibility. Patent family as of 17.7.2026 EP4519495 A1, FI131732 B, FI20225377 A, US2025347057 AA, WO23214114 A1",

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T1 - Boosting the cross-machine direction shrinkage and extensibility of a fiber product

AU - Retulainen, Elias

AU - Kouko, Jarmo

PY - 2025/10/22

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N2 - The present invention concerns a method for modifying a fiber network of a fiber web, typically made of a cellulose-based pulp, in order to increase the drying shrinkage as well as boost the cross-machine direction (CD) extensibility of the thus prepared fiber product. The method includes the steps of imposing a three-dimensional pattern in the wet fiber web, and drying the web using evaporative drying while allowing the web to shrink without major restraints. The pattern is imposed on the web in the forming section or after the forming section, before evaporative drying, while utilizing the wet elongation of the web for the shapes of the pattern, thereby not affecting the width of the wet web. The invention also concerns the formed fiber product having an increased CD extensibility. Patent family as of 17.7.2026 EP4519495 A1, FI131732 B, FI20225377 A, US2025347057 AA, WO23214114 A1

AB - The present invention concerns a method for modifying a fiber network of a fiber web, typically made of a cellulose-based pulp, in order to increase the drying shrinkage as well as boost the cross-machine direction (CD) extensibility of the thus prepared fiber product. The method includes the steps of imposing a three-dimensional pattern in the wet fiber web, and drying the web using evaporative drying while allowing the web to shrink without major restraints. The pattern is imposed on the web in the forming section or after the forming section, before evaporative drying, while utilizing the wet elongation of the web for the shapes of the pattern, thereby not affecting the width of the wet web. The invention also concerns the formed fiber product having an increased CD extensibility. Patent family as of 17.7.2026 EP4519495 A1, FI131732 B, FI20225377 A, US2025347057 AA, WO23214114 A1

UR - https://fi.espacenet.com/publicationDetails/biblio?II=0&ND=3&adjacent=true&locale=fi_FI&FT=D&date=20251113&CC=US&NR=2025347057A1&KC=A1

M3 - Patent

M1 - FI131732 B1

Y2 - 2022/05/02

ER -

Boosting the cross-machine direction shrinkage and extensibility of a fiber product

Abstract

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