Title (en)

Press blanket

Title (de)

Pressmantel

Title (fr)

Courroie de pressage

Publication

EP 0953678 B2 20110504 (DE)

Application

EP 99104438 A 19990305

Priority

DE 19819526 A 19980430

Abstract (en)

[origin: EP0953678A2] A new press mantle of a roller for water extraction from a wet fiber web, of paper or cardboard, has grooves (14) or blind drillings at the roller mantle surface (12). The side walls (18) are chamfered (20) and/or rounded (20') on a curved line at the opening, to prevent compression of the opening when the mantle is under pressure. The chamfer (20) edge length (y), towards the depth of the groove/drilling, is 1-3 times and preferably twice the edge length (x) along the longitudinal direction. The chamfer edge length on the longitudinal line (x) is 0.1-0.3 mm, especially 0.2 mm. With a rounded opening edge (20'), the length (y) of the edge in relation to a tangent is 1-3 times, preferably twice the edge length (x) along the longitudinal line which is 0.1-0.3 mm and preferably 0.2 mm. The chamfered/rounded edge (20,20') length (y) towards the depth of the groove/drilling is set to give a cylindrical wall section (24) between the base (22) of the groove (14) or drilling and the start of the chamfered/rounded edge. The curvature of the rounded edge (20') follows a circular arc or an involute. The chamfered/rounded edge (20,20') is at the outer edge of each groove (14) or blind drilling, or it is offset inwards towards the depth by a given gap from the mantle surface as a ring step.

IPC 8 full level

D21F 3/00 (2006.01); D21F 3/08 (2006.01); D21F 3/02 (2006.01)

CPC (source: EP US)

D21F 3/0227 (2013.01 - EP US); D21F 3/083 (2013.01 - EP US); D21F 3/086 (2013.01 - EP US); Y10S 462/901 (2013.01 - EP US); Y10T 428/24669 (2015.01 - EP US); Y10T 428/24694 (2015.01 - EP US)

Citation (opposition)

Opponent :

• EP 0241389 A1 19871014 - GERLAND STOWE WOODWARD IND BV [FR]
• DE 276833 C
• GB 1050823 A
• FR 2348316 A1 19771110 - VALMET OY [FI]
• DE 3708605 A1 19880929 - BOETTCHER GMBH & CO FELIX [DE]
• US 5543015 A 19960806 - JERMO OLLI A [FI]
• GERHARD MATHÉE, LEXIKON DER FERTIGUNGSTECHNIK UND ARBEITSMASCHINEN, vol. 9, 1968, pages 311

Designated contracting state (EPC)

AT DE FI GB SE

DOCDB simple family (publication)

EP 0953678 A2 19991103; EP 0953678 A3 20010207; EP 0953678 B1 20050608; EP 0953678 B2 20110504; AT E297484 T1 20050615; DE 19819526 A1 19991104; DE 59912133 D1 20050714; JP 4331315 B2 20090916; JP H11335992 A 19991207; US 6416630 B1 20020709

DOCDB simple family (application)

EP 99104438 A 19990305; AT 99104438 T 19990305; DE 19819526 A 19980430; DE 59912133 T 19990305; JP 12050499 A 19990427; US 29901299 A 19990426