EP 0820947 A1 19980128 - Roller with contoured surface for conveying ultrathin webs and apparatus comprising such a roller
Title (en)
Roller with contoured surface for conveying ultrathin webs and apparatus comprising such a roller
Title (de)
Transportrolle mit profilierter Oberfläche zum Führen von ultradünnen Bahnen und Vorrichtung mit einer solchen Transportrolle
Title (fr)
Rouleau avec surface profilée pour transporter des bandes ultrafines et appareil comprenant un tel rouleau
Publication
Application
Priority
US 68690796 A 19960726
Abstract (en)
A web conveying roller (18) is provided with circumferentially or spirally extending grooves (42) and radially stiff lands (44), the lands having convex curvatures (46, 48; 54) to cause a conveyed, ultrathin web (30), at the beginning of a wrap angle ( alpha ) onto the roller (18), to undulate along the width of the roller (18) over the lands (44) and into the grooves (42) while remaining spaced from the convex curvatures of the lands (44); so that, air entrained between the web (30) and the lands (44) can flow into the grooves (42). <IMAGE>
IPC 1-7
IPC 8 full level
B65H 27/00 (2006.01)
CPC (source: EP)
B65H 27/00 (2013.01); B65H 2404/1311 (2013.01); B65H 2404/1313 (2013.01); B65H 2404/1316 (2013.01)
Citation (search report)
- [X] EP 0705786 A2 19960410 - EASTMAN KODAK CO [US]
- [XA] EP 0590253 A1 19940406 - ESCHER WYSS GMBH [DE]
- [A] EP 0316735 A1 19890524 - WOLFF WALSRODE AG [DE]
- [A] GB 2185726 A 19870729 - MITA INDUSTRIAL CO LTD
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
DOCDB simple family (application)
EP 97202209 A 19970714; JP 19548697 A 19970722