Global Patent Index - EP 1052211 A2

EP 1052211 A2 2000-11-15 - A core pipe for a sheet roll

Title (en)

A core pipe for a sheet roll

Title (de)

Hülsenrohr für Bandrolle

Title (fr)

Noyau tubulaire pour rouleau de bande

Publication

EP 1052211 A2 (EN)

Application

EP 00116709 A

Priority

  • EP 97115567 A
  • JP 25049296 A

Abstract (en)

[origin: EP0831048A1] It is desired to prevent disalignment of the edges of a folded sheet (U) by smoothly feeding the sheet while keeping tension fluctuactions to a minimum when the sheet is unwound from a paper roll (R) set in a paper feed unit to a packaging unit even though the paper roll diameter decreases gradually as the sheet is unwound. A sheet length measuring sensor or rotary encoder (3,32) is provided in the paper feed path through which the packaging sheet unwound from the paper roll is fed toward the packaging unit. An angle sensor (24,25) is provided which comprises Hall element sensors provide on a support shaft and magnets provided on a core pipe of the paper roll (R). Any change is the signals from one of these sensors relative to the signal from the other sensor is used to calculate the paper roll winding length, and the sheet tension is adjusted to an optimum, constant level by controlling the sheet braking force stepwise according to the roll diameter measured by the sensors. <IMAGE>

IPC 1-7 (main, further and additional classification)

B65H 75/10

IPC 8 full level (invention and additional information)

B65B 43/04 (2006.01); B65B 47/02 (2006.01); B65H 16/02 (2006.01); B65H 23/06 (2006.01); B65H 23/08 (2006.01); B65H 75/10 (2006.01); B65H 75/18 (2006.01); B65H 77/00 (2006.01)

CPC (invention and additional information)

B65H 75/10 (2013.01); B65H 16/005 (2013.01); B65H 16/103 (2013.01); B65H 23/063 (2013.01); B65H 75/182 (2013.01); B65H 2511/114 (2013.01); B65H 2511/142 (2013.01); B65H 2513/114 (2013.01); B65H 2553/22 (2013.01); B65H 2553/51 (2013.01); B65H 2801/81 (2013.01)

Combination set (CPC)

B65H 2511/142 + B65H 2220/03

Designated contracting state (EPC)

BE DE DK ES FR GB GR IE IT NL PT

EPO simple patent family

EP 0831048 A1 19980325; EP 0831048 B1 20020807; CA 2214597 A1 19980320; CA 2214597 C 20020402; CA 2316091 A1 19980320; CA 2316140 A1 19980320; CA 2316140 C 20031230; CN 1077080 C 20020102; CN 1162317 C 20040818; CN 1165472 C 20040908; CN 1178765 A 19980415; CN 1269318 A 20001011; CN 1356253 A 20020703; DE 69714535 D1 20020912; DE 69714535 T2 20021205; DE 69721084 D1 20030522; DE 69721084 T2 20031030; DE 69721591 D1 20030605; DE 69721591 T2 20040318; DK 0831048 T3 20021104; DK 1029818 T3 20030602; DK 1052211 T3 20030610; EP 1029818 A2 20000823; EP 1029818 A3 20000906; EP 1029818 B1 20030502; EP 1052211 A2 20001115; EP 1052211 A3 20010411; EP 1052211 B1 20030416; ES 2179986 T3 20030201; ES 2193914 T3 20031116; ES 2195816 T3 20031216; PT 1029818 E 20030829; PT 1052211 E 20030930; PT 831048 E 20021231

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