Method of removal of paper wraps from cigarette filter rods
US4457317A · kind A · utility
6Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 9, 1982 |
| Grant date | Jul 3, 1984 |
| Priority date | — |
| Expiry date | Aug 9, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1911
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Method of removing paper wraps that are secured by thermoplastic adhesive around and/or to waste cigarette filter rods to enable subsequent recovery of the filter material in the cigarette filter rods, the method including the step of heating the cigarette filter rods to the melting point of the thermoplastic adhesive and then agitating the paper wrap against the filter material to obtain separation of the paper wrap therefrom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.