US 12,075,817 B2
Smoking article with heat resistant sheet material
Laurent Poget, Bussigny (CH); Alexandre Malgat, Rouffach (FR); Christoph Sorg, Munich (DE); Andreas Hofenauer, Eichenau (DE); David Croll, Poing (DE); and Rolf Gericke, Holzkirchen (DE)
Assigned to Philip Morris USA Inc., Richmond, VA (US)
Filed by Philip Morris USA Inc., Richmond, VA (US)
Filed on Dec. 17, 2021, as Appl. No. 17/554,241.
Application 17/554,241 is a continuation of application No. 16/436,247, filed on Jun. 10, 2019, granted, now 11,224,249.
Application 16/436,247 is a continuation of application No. 15/461,947, filed on Mar. 17, 2017, granted, now 10,314,331, issued on Jun. 11, 2019.
Application 15/461,947 is a continuation of application No. 14/556,995, filed on Dec. 1, 2014, granted, now 9,730,468, issued on Aug. 15, 2017.
Application 14/556,995 is a continuation of application No. 13/637,263, granted, now 8,915,255, previously published as PCT/IB2011/001147, filed on Mar. 28, 2011.
Claims priority of application No. 10250601 (EP), filed on Mar. 26, 2010.
Prior Publication US 2022/0104536 A1, Apr. 7, 2022
Int. Cl. A24D 1/02 (2006.01); A24B 15/16 (2020.01); A24D 1/20 (2020.01); A24D 1/22 (2020.01)
CPC A24D 1/02 (2013.01) [A24B 15/165 (2013.01); A24D 1/20 (2020.01); A24D 1/22 (2020.01)] 20 Claims
OG exemplary drawing
 
1. A heat resistant sheet material comprising:
a fibrous layer including,
cellulosic fibers in an amount of less than 40% by weight,
an inorganic filler material in an amount of at least 50% by weight, the inorganic filler material including,
a plurality of spherical-shaped particles, the plurality of spherical-shaped particles having an average particle size of 0.1 μm to 50 μm, and
an organic binder in an amount ranging from 0.1% to 10% by weight,
the heat resistant sheet material having a weight of 70 grams per square meter to 130 grams per square meter.