| (19) |
 |
|
(11) |
EP 0 390 419 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
03.04.1991 Bulletin 1991/14 |
| (43) |
Date of publication A2: |
|
03.10.1990 Bulletin 1990/40 |
| (22) |
Date of filing: 21.03.1990 |
|
|
| (84) |
Designated Contracting States: |
|
AT BE CH DE DK ES FR GB GR IT LI LU NL SE |
| (30) |
Priority: |
31.03.1989 GB 8907255
|
| (71) |
Applicant: BRITISH-AMERICAN TOBACCO COMPANY LIMITED |
|
Staines,
Middlesex TW18 1DY (GB) |
|
| (72) |
Inventors: |
|
- Brown, Ian Campbell
Winchester,
Hampshire (GB)
- Dittrich, David John
Southampton,
Hampshire (GB)
- Fiebelkorn, Richard Thomas
Southampton,
Hampshire (GB)
|
| (74) |
Representative: MacLean, Kenneth John Hamson et al |
|
Patents Section
British-American Tobacco Company Ltd.
Technology Centre
Regents Park Road
Southampton, S09 1PE
Southampton, S09 1PE (GB) |
|
| |
|
| (54) |
Improvements relating to smoking articles |
(57) A smoking article which comprises tobacco treated with a high loading level of humectant
and which has been expanded by a high level expansion process to produce expanded
tobacco having a humectant loading level in the range of 4% to 15%. The particulate
matter, water, nicotine and humectant free (PMWNHF) to nicotine delivery ratio of
smoking articles according to the invention and smoked under standard machine smoking
conditions is not more than 8 to 1.