SG11201809654XA - Smoking article with combined ventilation and filtration efficiency adjustment - Google Patents

Abstract

INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property 1111111111111111111111111111111111111111111111111111111111111111111111110111111 Organization International Bureau (10) International Publication Number (43) International Publication Date ......0\"\" WO 2018/002042 Al 04 January 2018 (04.01.2018) W I PO I PCT (51) International Patent Classification: OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, A24D 3/04 (2006.01) A24D 3/06 (2006.01) SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, (21) International Application Number: TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. PCT/EP2017/065840 (84) Designated States (unless otherwise indicated, for every (22) International Filing Date: kind of regional protection available): ARIPO (BW, GH, 27 June 2017 (27.06.2017) GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, (25) Filing Language: English TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, (26) Publication Language: English EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, (30) Priority Data: TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, 16176490.7 27 June 2016 (27.06.2016) EP KM, ML, MR, NE, SN, TD, TG). (71) Applicant: PHILIP MORRIS PRODUCTS S.A. Published: [CH/CH]; Quai Jeanrenaud 3, CH-2000 Neuchatel (CH). — with international search report (Art. 21(3)) (72) Inventors: FIGUEROA, Loi Mark C.; Blk 17, Lot 34, St. Joseph 8 Butong, Cabuyao Laguna, 4025 (PH). UTHUR- RY, Jerome; Route des Falaises 66, 2000 Neuchatel (CH). (74) Agent: CIVERA, Andrea; Reddie & Grose LLP, The _ White Chapel Building, 10 Whitechapel High Street, Lon- don — Greater London El 8QS (GB). = (81) Designated States (unless otherwise indicated, for every = _ kind of national protection available): AE, AG, AL, AM, _ AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, = CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, = KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, = = (54) Title: SMOKING ARTICLE WITH = = = _ = COMBINED VENTILATION AND FILTRATION EFFICIENCY ADJUSTMENT 14 10 n 22 D2 / = = = = 16 20 18 12 24 D1 1-1 Fig. 1 ei ii- 0 (57) : The invention relates to a smoking article (10) comprising a tobacco rod (12) and a filter, the filter comprising a filter alit el unit (14) comprising a first segment (16) of filtration material; a second segment comprising a tubular element (18) of filtration material © upstream of the first segment (16), the tubular element (18) having an outer diameter (D2) and an inner diameter (D1). An inner surface ot .---- of the tubular element (18) is substantially air impermeable. The second segment further comprises a frangible or irreversibly collapsible 1-1 flow restrictor (24) disposed in the tubular element (18). When the flow restrictor (24) is in a substantially unbroken or non-collapsed C:::: ) state, the filter unit (14) has a first RTD. When the flow restrictor (24) is broken or collapsed, the filter unit (14) has a second RTD, ei _ the second RTD being smaller than the first RTD.