Method and apparatus for neutralizing electrostatic charges of filter material for smokers' products
US3974750A · kind A · utility
2Cited by
5References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 6, 1975 |
| Grant date | Aug 17, 1976 |
| Priority date | — |
| Expiry date | Feb 6, 1995 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24D3/025
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Successive filter rod sections which are produced in a filter rod making machine are caused to pass through a body of ionized air before they leave the machine. This insures that ionized air destroys the electrostatic charges which the non-conductive wrappers and/or fillers of filter rod sections accumulate in the machine upstream of the ionizing station. The conveyor or conveyors which transport the filter rod sections through ionized air are designed to transport the sections sideways. At least one electrode of the ionizing device or devices for air is preferably connected with a source of high-voltage a-c energy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.