EP 3799729 A4 20211124 - MOUTHPIECE FILTER AND CIGARETTE HAVING VARIABLE VENTILATION
Title (en)
MOUTHPIECE FILTER AND CIGARETTE HAVING VARIABLE VENTILATION
Title (de)
MUNDSTÜCKFILTER UND ZIGARETTE MIT VARIABLER BELÜFTUNG
Title (fr)
FILTRE D'EMBOUT BUCCAL ET CIGARETTE AYANT UNE VENTILATION VARIABLE
Publication
Application
Priority
- CN 201910672151 A 20190724
- CN 2019102662 W 20190827
Abstract (en)
[origin: EP3799729A1] The invention discloses a variable-ventilation filter tip and a cigarette. The above filter tip includes a filter element and a coating layer, wherein the coating layer wraps the filter element; the filter element includes a smoke inlet end and a smoke release end; a phase-change ventilation area and a non-phase-change ventilation area are arranged on the coating layer, a plurality of first ventilation holes are arranged in the phase-change ventilation area, and a plurality of second ventilation holes are arranged in the non-phase-change ventilation area; outside air penetrates through the coating layer through the first ventilation holes and the second ventilation holes to enter a part of the filter element; a part in the filter element close to the smoke inlet end is provided with a starch tube; and a phase-change material is filled in the first ventilation hole; and a phase-change temperature of the phase-change material ranges from 45°C to 60°C. The invention further discloses the cigarette applying the above filter tip. According to the invention, the cigarette may be smoked in an ignition manner or a non-ignition heating manner.
IPC 8 full level
A24D 3/04 (2006.01); A24D 1/02 (2006.01); A24D 1/20 (2020.01); A24D 3/14 (2006.01)
CPC (source: CN EP KR US)
A24D 1/02 (2013.01 - EP); A24D 1/027 (2013.01 - KR); A24D 1/04 (2013.01 - CN); A24D 1/045 (2013.01 - KR US); A24D 1/20 (2020.01 - US); A24D 3/0287 (2013.01 - KR); A24D 3/041 (2013.01 - EP); A24D 3/043 (2013.01 - CN KR US); A24D 3/048 (2013.01 - US); A24D 3/06 (2013.01 - CN KR); A24D 3/08 (2013.01 - US); A24D 3/14 (2013.01 - EP); A24D 3/17 (2020.01 - US); A24D 1/20 (2020.01 - EP)
Citation (search report)
- [I] CN 109924542 A 20190625 - CHINA TOBACCO HUNAN IND CO LTD
- [I] CN 109924539 A 20190625 - CHINA TOBACCO HUNAN IND CO LTD
- [I] CN 207653554 U 20180727 - CHINA TOBACCO HUNAN IND CO LTD
- [I] CN 207653551 U 20180727 - CHINA TOBACCO HUNAN IND CO LTD
- See also references of WO 2021012349A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3799729 A1 20210407; EP 3799729 A4 20211124; EP 3799729 B1 20231213; CN 110419773 A 20191108; CN 110419773 B 20220429; JP 2021535736 A 20211223; KR 102649730 B1 20240319; KR 20210018949 A 20210218; PH 12021550151 A1 20210913; UA 127234 C2 20230614; US 2021177047 A1 20210617; WO 2021012349 A1 20210128
DOCDB simple family (application)
EP 19934340 A 20190827; CN 2019102662 W 20190827; CN 201910672151 A 20190724; JP 2020573411 A 20190827; KR 20217000914 A 20190827; PH 12021550151 A 20210119; UA A202100091 A 20190827; US 201917259558 A 20190827