Innerwrap with polyvinyl alcohol slip coating
US6692835B1 · kind B1 · utility
12Cited by
12References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 14, 2000 |
| Grant date | Feb 17, 2004 |
| Priority date | — |
| Expiry date | Sep 14, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31993
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Polyvinyl alcohol (PVOH) is used as a slip coating on a cigarette package innerwrap to prevent the innerwrap from sticking to the rollers of cigarette packaging machinery during processing of the innerwrap material. PVOH unexpectedly has a low retention of menthol, as compared to conventional slip coating materials, which also makes it useful in mentholation processes that involve applying menthol to the innerwrap rather than to the cigarettes per se.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.