Method and apparatus for sorting waste paper of different grades and conditions
US6506991B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2000 |
| Grant date | Jan 14, 2003 |
| Priority date | — |
| Expiry date | Apr 28, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S209/932
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Method and apparatus for sorting waste paper pieces of different grades and conditions. The method includes moving a plurality of waste paper pieces in a conveying direction on at least one sorting belt, each waste paper piece having a surface, irradiating at least one area of the surface with radiation, registering the radiation reflected from the surface, and sorting the waste paper on the basis of the reflected radiation, wherein waste paper pieces of at least one type are separated from waste paper pieces of at least one other type. The apparatus includes at least one sorting belt for conveying a plurality of waste paper pieces in a conveying direction, at least one radiation source arranged above the sorting belt for irradiating at least one area of the sorting belt, at least one evaluation device which registers the radiation reflected from the pieces of waste paper, and at least one sorting device arranged downstream from the at least one radiation source, wherein waste paper pieces of at least one type are separated from waste paper pieces of at least one other type using the at least one sorting device and on the basis of outputs from the evaluation device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.