| (19) |
 |
|
(11) |
EP 0 558 254 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
21.12.1994 Bulletin 1994/51 |
| (43) |
Date of publication A2: |
|
01.09.1993 Bulletin 1993/35 |
| (22) |
Date of filing: 23.02.1993 |
|
|
| (84) |
Designated Contracting States: |
|
AT BE CH DE DK ES FR GB GR IE IT LI LU NL PT SE |
| (30) |
Priority: |
26.02.1992 US 842276
10.09.1992 US 939236
|
| (71) |
Applicant: R.J. REYNOLDS TOBACCO COMPANY |
|
Winston-Salem
North Carolina 27102 (US) |
|
| (72) |
Inventors: |
|
- Gentry, Jeffrey S.
Pfafftown,
North Carolina 27040 (US)
- Raker, Mark L.
Clemmons,
North Carolina 27012 (US)
|
| (74) |
Representative: Skailes, Humphrey John |
|
Frank B. Dehn & Co.
Imperial House
15-19 Kingsway
London WC2B 6UZ
London WC2B 6UZ (GB) |
|
| |
|
|
|
Remarks: |
|
A request for correction of the description has been filed pursuant to Rule 88 EPC.
A decision on the request will be taken during the proceedings before the Examining
Division (Guidelines for Examination in the EPO, A-V, 2.2). |
|
(57) A cigarette includes a charge or roll of smokable material (e.g., tobacco cut filler)
circumscribed by at least one layer of paper wrapping material to form a tobacco rod.
A certain cigarette includes an outer wrapping material which circumscribes and overwraps
an inner wrapping material. The outer paper wrapping material of the tobacco rod includes
an additive package. The additive package includes at least one water soluble salt
which is applied in a water soluble form. For example, a paper wrapper including wood
pulp fiber and calcium carbonate filler material is treated with an aqueous solution
of calcium acetate, potassium chloride and potassium acetate. The inner paper wrapping
material includes flax fiber, magnesium hydroxide filler and calcium carbonate filler.
The cigarette is capable of sustaining smolder under FTC smoking conditions while
yielding very low levels of visible sidestream smoke.