Converting machine
US12319050B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 22, 2022 |
| Grant date | Jun 3, 2025 |
| Priority date | — |
| Expiry date | Aug 22, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41P2233/13
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method of aligning a plurality of printed motifs on a sheet (3) in a converting machine (10). An actual position (Pa_1) at a first sensor is defined as an initial reference position (P_ref1) for the sheet, and at least one displacement error (Δd2) is calculated and compared to a first threshold (T1). If the displacement error is lower than the first threshold, then the angular position (α) of a printing cylinder (42) in the second flexographic printing unit (16b) is adjusted. However, if the error is higher than the first threshold, then at least part of the of the displacement error (Δd_2) is corrected by modifying the speed (V) of a vacuum transfer unit located between the first printing unit and the second printing unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.