Extended sheet cigarette filler
US4168712A · kind A · utility
38Cited by
6References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 9, 1976 |
| Grant date | Sep 25, 1979 |
| Priority date | — |
| Expiry date | Jul 9, 1996 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA24D3/04
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Cigarettes or cigarette filters are made by forming a filler by feeding continuously at least one web of filler material which has lines of spaced slits extending across the width of the web, the slits in each line being offset from those in adjacent lines; stretching the web so as to open up the slits while distorting out of their original plane the interconnected strip-like portions of the web left between the slits; compressing the web laterally to form a filler; enclosing the thus-formed filler in a wrapper to form a continuous rod; and cutting the continuous rod into individual portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.