WO2026052469 - A METHOD FOR MANUFACTURING A YANKEE DRYING CYLINDER
National phase entry is expected:
Publication Number
WO/2026/052469
Publication Date
12.03.2026
International Application No.
PCT/EP2025/074343
International Filing Date
27.08.2025
Title **
[English]
A METHOD FOR MANUFACTURING A YANKEE DRYING CYLINDER
[French]
PROCÉDÉ DE FABRICATION D'UN CYLINDRE DE SÉCHAGE À TAMBOURS
Applicants **
VALMET AB
Inventors
WEDIN, Erik
OTTOSSON, Anders
IVARSSON, Hans
TOLFSSON, Karl-Johan
Priority Data
2430453-7
09.09.2024
SE
Application details
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International Searching Authority |
EPO
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| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
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| Type of Assignment |
The Standard Agent's Assignment
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| Applicant's Legal Status |
Legal Entity
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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| Translation |
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 2206 | |
| EPO | Filing, Examination, Granting | 11192 | |
| Japan | Filing, Examination, Granting | 2340 | |
| South Korea | Filing, Examination, Granting | 2449 | |
| USA | Filing, Examination, Granting | 4940 |
Total:
23,127
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Abstract[English]
The invention relates to a method for manufacturing a Yankee drying cylinder (1). The method may comprise providing (S1) a design of an external surface (7) of a portion (2a) of a shell (2) of the cylinder (1), wherein, in a cross-section which coincides with a rotational axis (RA) of the cylinder (1), a contour (C7) of the external surface (7) is a crown contour. The method may comprise providing (S2) a design of an internal surface of said portion (2a), which presents a plurality of circumferential grooves (3). In said cross-section, a maximum difference of the radial distance (DB) from the external surface (7) to the bottoms of the grooves (3), is less than a maximum difference (MD) of the radial distance from the rotational axis to said external surface (7). The shell may be machined (S3) internally, using the design of the internal surface (6a) as a model.[French]
L'invention concerne un procédé de fabrication d'un cylindre de séchage à tambours (1). Le procédé peut comprendre le fait de prévoir (S1) une conception d'une surface externe (7) d'une partie (2a) d'une coque (2) du cylindre (1), dans lequel, dans une section transversale qui coïncide avec un axe de rotation (RA) du cylindre (1), un contour (C7) de la surface externe (7) est un contour en forme de couronne. Le procédé peut comprendre le fait de prévoir (S2) une conception d'une surface interne de ladite partie (2a), qui présente une pluralité de rainures circonférentielles (3). Dans ladite section transversale, une différence maximale de distance radiale (DB) entre la surface externe (7) et les fonds des rainures (3) est inférieure à une différence maximale (MD) de distance radiale entre l'axe de rotation et ladite surface externe (7). La coque peut être usinée (S3) à l'intérieur, en utilisant la conception de la surface interne (6a) comme modèle.