07533709 is referenced by 52 patents and cites 436 patents.

This invention proposes a new, improved method and apparatus for applying web segments to a traveling web. These web segments, sometimes called ears or wings, may be asymmetrical or otherwise incompatible with the usual slip-and-cut method. The asymmetrical shape may have differing web tensions which can cause the web segments to be improperly engaged with the vacuum holes on an anvil roll. The present invention utilizes both circumferential rows of vacuum holes and an additional pattern of ear retaining vacuum holes. The circumferential rows of vacuum holes are activated consecutively by vacuum commutation, however, the pattern of ear retaining vacuum holes are activated simultaneously to counter the effects of differing web tensions on the ear portions.

Title
High speed vacuum porting
Application Number
11/141552
Publication Number
7533709 (B2)
Application Date
May 31, 2005
Publication Date
May 19, 2009
Inventor
Thomas C Meyer
Elkhart Lake
WI, US
Agent
Ryan Kromholz & Manion S C
Assignee
Curt G Joa
WI, US
IPC
B32B 37/00
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