Preferential defect marking on a web
US7937233B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 17, 2008 |
| Grant date | May 3, 2011 |
| Priority date | — |
| Expiry date | Jul 16, 2029 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21G9/0054
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for preferentially marking defects on a web is described. The system includes a web of material to be converted into individual sheets of a plurality of different grade levels, a database storing anomaly data of anomalies on the web, wherein an anomaly is a potential defect in at least one of the plurality of different grade levels, a marker that associates a unique mark with at least one of the grade levels, and a controller to retrieve the anomaly data from the database and to signal the marker as to where to make a mark, wherein the marker applies the mark associated with at least one of the grade levels for which the anomaly may cause a defect. The system may provide advantages, such as that a converter of various products from a single web roll may determine which regions of the web satisfy each grade level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.