Method for manufacturing discrete articles from a material web using synchronized servo-actuated operational units
US6869386B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2002 |
| Grant date | Mar 22, 2005 |
| Priority date | — |
| Expiry date | Oct 7, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P90/02
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Method for manufacturing discrete articles from a material web using a cyclic master reference signal to synchronize the servo actuation of multiple operational units in a manufacturing apparatus to perform periodic operations on successive product segments of the material web and thereby form the articles, without the need for ongoing external phasing or registration to maintain synchronization of the operational units relative to the articles being made. The method is particularly suited for application in the manufacture of disposable absorbent articles and other products formed from web materials. Because of the coordination by a common reference signal, the execution by each of the individual servo systems of its programmed actuation instructions results in its actuation being synchronous with that of the other servo systems. These actuation instructions can include motion profiles, torque profiles, force profiles, “cam” profiles, and any other form of actuation sequence within the capability of servo actuators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.