Patent · US Active

Hydrophobic plug wrap

US11439177B2 · kind B2 · utility

0Cited by

12References

16Claims

0Family size

Assignee

Philip Morris Products S.A. · CH

Inventors

Clement Besso · Neuchâtel, CH
Aurelien Guyard · Orbe, CH
Alen Kadiric · Orpund, CH

Key dates

Filing date	Oct 15, 2015
Grant date	Sep 13, 2022
Priority date	—
Expiry date	Feb 3, 2036

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21H21/16
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A smoking article includes a tobacco substrate and a filter segment comprising filtration material axially aligned in an abutting end to end relationship with the tobacco substrate. A hydrophobic plug wrap is disposed about the filtration material. The plug wrap is hydrophobic via hydrophobic groups chemically bonded to the plug wrap.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.