| (19) |
 |
|
(11) |
EP 0 198 718 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
20.04.1988 Bulletin 1988/16 |
| (43) |
Date of publication A2: |
|
22.10.1986 Bulletin 1986/43 |
| (22) |
Date of filing: 16.04.1986 |
|
|
| (84) |
Designated Contracting States: |
|
CH DE FR GB IT LI NL |
| (30) |
Priority: |
16.04.1985 US 723883
03.06.1985 US 740325
|
| (71) |
Applicant: PHILIP MORRIS INCORPORATED |
|
() |
|
| (72) |
Inventors: |
|
- Keritsis, Gus D.
()
- Nichols, Walter A.
()
- Burnett, George H.
()
- Thesing, Richard A.
()
- Nepomuceno, Jose G.
()
|
|
| |
|
| (54) |
Manufacture of foamed tobacco-containing articles by extrusion |
(57) A wet blend containing tobacco particles and a binder is extruded under conditions
such that steam is generated within the material upon extrusion and effects foaming.
To minimize the amount of water used, which may subsequently have to be dried off,
the binder is pre-hydrated by mixing with water before being mixed with the tobacco
particles. To improve the consistency of the hydrated binder a small proportion of
tobacco particles can be mixed with the binder before hydration or part of the binder
can be mixed dry with the tobacco particles, leaving an excess of water for admixture
with the rest of the binder.