# US 11,439,178 B2 · Smokeless cigarette having decreased vapor temperature and preventing heat-caused collapse of cigarette holder > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,439,178 B2 - Document ID: US11439178B2 - Status: Granted - Kind: B2 - Application number: 16/616,652 - Filed: 2018-05-25 - Published: 2020-07-02 - Granted: 2022-09-13 - Earliest claimed: 2017-05-26 - Assignees: Hubei China Tobacco Industry Co., Ltd. - Applicants: Hubei China Tobacco Industry Co., Ltd. - Inventors: Huachen Liu; Yikun Chen; Weichang Ke; Chenghao Luo; Bing Liu - Web page: https://patentgrep.com/patent/US11439178B2 ## CPC - A24D 3/17: Filters specially adapted for simulated smoking devices - A24B 15/167: in liquid or vaporisable form, e.g. liquid compositions for electronic cigarettes - A24B 15/283: {by encapsulation of the chemical substances} - A24D 1/002: {with additives, e.g. for flavouring} - A24D 1/045: {with smoke filter means (A24D1/047 takes precedence)} - A24D 1/20: Cigarettes specially adapted for simulated smoking devices - A24D 3/04: Tobacco smoke filters characterised by their shape or structure - A24D 3/061: {containing additives entrapped within capsules, sponge-like material or the like, for further release upon smoking} - A24D 3/062: {characterised by structural features} - A24D 3/067: {characterised by functional properties} - A24D: CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES - A24B: MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF ## Abstract A smokeless cigarette having a decreased vapor temperature and preventing the heat-caused collapse of a cigarette holder comprises a filter tip, a heat-resistant hollow section and a tobacco section sequentially connected, wherein the heat-resistant hollow section consists of a heat-resistant hollow section cover and a heat-resistant hollow section hollow layer. The heat-resistant hollow section is made by rolling a high-temperature resistant material into a hollow tubular structure; the high-temperature resistant material forms the heat-resistant hollow section cover. The heat-resistant hollow section hollow layer is a cavity structure formed and surrounded by the heat-resistant hollow section cover. An inner layer of the heat-resistant hollow section cover is coated with a layer of phase-change heat-absorbing material, or the heat-resistant hollow section hollow layer is filled with a phase-change heat-absorbing material. ## Claims ### Claim 1 A cigarette capable of lowering a vapor temperature and preventing heat-caused collapse of a cigarette holder, comprising a filter tip and a tobacco section, wherein: the cigarette further comprises a heat-resistant hollow section provided between the filter tip and the tobacco section, the heat-resistant hollow section is constructed by a heat-resistant hollow section housing and a hollow layer for heat-resistant hollow section, and the heat-resistant hollow section is made by rolling a heat-resistant material into a hollow tubular structure, wherein the heat-resistant hollow section housing is formed by the heat-resistant material, the hollow layer for heat-resistant hollow section is a cavity structure surrounded by the heat-resistant hollow section housing, and an inner layer of the heat-resistant hollow section housing is coated with a layer of phase-change heat-absorbing material or the hollow layer for heat-resistant hollow section is filled with a phase-change heat-absorbing material; wherein: the filter tip section is added with a flavoring capsule that is filled with flavors and essences and is capable of being crumbed; the tobacco section consists of, by mass percent: tobacco shreds 5%-77%, tobacco sheets 20%-92%, an atomizing agent 2%-40%, supplementary materials 0.1-10%, a tobacco extract 0.1%-20%, tobacco flavors and essences 0.01%-6% and a heat-sensitive capsule 0.1-5%; the atomizing agent consists of glycerol and ethylene glycol in a mass ratio of (1-4):1; the heat-sensitive capsule is filled with flavoring water or water, which is released when the heat-sensitive capsule is heated to a temperature higher than 210° C., and the vapor temperature of the cigarette is lowered via the heat absorption by the water or the flavoring water. ### Claim 2 (depends on 1) The cigarette capable of lowering a vapor temperature and preventing the heat-caused collapse of a cigarette holder of claim 1, wherein: the hollow layer for heat-resistant hollow section has an incompact porous structure or a hollow structure, wherein a ventilation direction of the loose porous structure is consistent with a circulation direction of vapor in the cigarette. ### Claim 3 (depends on 2) The cigarette capable of lowering a vapor temperature and preventing the heat-caused collapse of a cigarette holder of claim 2, wherein: the hollow structure has a circle, square, rectangle or triangle sectional shape. ### Claim 4 (depends on 3) The cigarette capable of lowering a vapor temperature and preventing the heat-caused collapse of a cigarette holder of claim 3, wherein: the heat-resistant hollow section housing is formed with a vent hole in communication with the hollow layer for heat-resistant hollow section. ### Claim 5 (depends on 2) The cigarette capable of lowering a vapor temperature and preventing the heat-caused collapse of a cigarette holder of claim 2, wherein: the heat-resistant hollow section housing is formed with a vent hole in communication with the hollow layer for heat-resistant hollow section. ### Claim 6 (depends on 1) The cigarette capable of lowering a vapor temperature and preventing the heat-caused collapse of a cigarette holder of claim 1, wherein: the phase-change heat-absorbing material comprises one of a hydroxy acrylic resin and a polylactic acid, or a mixture thereof. ### Claim 7 (depends on 6) The cigarette capable of lowering a vapor temperature and preventing the heat-caused collapse of a cigarette holder of claim 6, wherein: the heat-resistant hollow section housing is formed with a vent hole in communication with the hollow layer for heat-resistant hollow section. ### Claim 8 (depends on 1) The cigarette capable of lowering a vapor temperature and preventing the heat-caused collapse of a cigarette holder of claim 1, wherein: the heat-resistant material is selected from a group consisting of a fibrous material, a ceramic material, a non-woven fabric and paper, each of which has a heat-resistant characteristic. ### Claim 9 (depends on 8) The cigarette capable of lowering a vapor temperature and preventing the heat-caused collapse of a cigarette holder of claim 8, wherein: the heat-resistant hollow section housing is formed with a vent hole in communication with the hollow layer for heat-resistant hollow section. ### Claim 10 (depends on 1) The cigarette capable of lowering a vapor temperature and preventing the heat-caused collapse of a cigarette holder of claim 1, wherein: the heat-resistant hollow section housing has a wall thickness of 0.5-1.1 mm. ### Claim 11 (depends on 1) The cigarette capable of lowering a vapor temperature and preventing the heat-caused collapse of a cigarette holder of claim 1, wherein: a hollow section is provided between the filter tip and the heat-resistant hollow section, or the hollow section is provided at one side of the filter tip away from the heat-resistant hollow section. ### Claim 12 (depends on 1) The cigarette capable of lowering a vapor temperature and preventing the heat-caused collapse of a cigarette holder of claim 1, wherein: the heat-resistant hollow section housing is formed with a vent hole in communication with the hollow layer for heat-resistant hollow section.