Powder applicator device, particularly for cigarette making machines
US5520738A · kind A · utility
5Cited by
14References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 1994 |
| Grant date | May 28, 1996 |
| Priority date | — |
| Expiry date | Feb 22, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B14/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A device for applying bronze or similar powder, particularly in a cigarette making machine, uses a corona discharge wire (36) or similar conductor maintained at high voltage to establish an electrostatic field which causes powder to be attracted to prepared adhesive patches on a paper web (14). Excess powder carried by the web is removed with the assistance of vibration, which may be produced by passing the web over an ultrasound device (44) or a pulsed air mover (102). Excess powder may also be removed by an air mover (152) directing a stream of air at the surface of the web carrying the powder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.