Method and arrangement for synchronized positioning of at least one essentially continuous material web based on a virtual master function
US8168254B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2006 |
| Grant date | May 1, 2012 |
| Priority date | — |
| Expiry date | Aug 6, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2557/33
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for synchronized positioning of a web for manufacturing products. The method includes feeding the web into a production apparatus at a first speed; processing in the production apparatus, with the web being fed forward at a second speed; and detection of each synchronization mark for positioning the respective motif in a predetermined position on each product. The method includes the following steps: generation of a reading of the actual value of a virtual master function upon the detection, which includes a cyclic clock where the number of cycles per product includes an integer; comparison between the actual value and the expected value of the virtual master function; and stretching of the web in response to any deviation between the actual value and the expected value, with the aim of minimizing the deviation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.