Classifications

• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
  • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
  • A24D3/06—Use of materials for tobacco smoke filters
  • A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
  • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
  • A24D3/04—Tobacco smoke filters characterised by their shape or structure
  • A24D3/043—Tobacco smoke filters characterised by their shape or structure with ventilation means, e.g. air dilution

Definitions

• the invention relates to a ventilated cigarette, the mouthpiece zone of which consists of tobacco or a filter or a hollow mouthpiece and there contains at least one ventilation zone in the casing or wall.
• a ventilated cigarette is described in US Pat. No. 3,526,904, in which a meltable polymer film covers parts of the ventilation zone on the tobacco rod; after the polymer film has melted - due to the approaching glowing zone - there is an increase in strand ventilation.
• the invention has for its object to provide a ventilated cigarette, which has a mouthpiece zone made of tobacco or a filter or a hollow mouthpiece, the degree of ventilation of which increases during smoking, in order to equalize the smoke yield and taste and thus reduce the overall smoke values to achieve both in the particle and in the gas phase.
• a filter for tobacco smoke which is composed of several filter elements, at least one of the filter elements consisting entirely of non-crimped fibers made of thermoplastic polymeric non-absorbent material, which have a diameter of less than about 5 microns and their the greater part is arranged so that the fibers are transverse to the tobacco smoke flow.
• this known filter is one without a ventilation zone (s).
• this known filter has the disadvantage that it clogs after a few puffs when a cigarette provided with such a filter is smoked, that is to say that a large amount of condensate is very quickly deposited on the filter element made of non-crimped fibers made of thermoplastic polymeric non-absorbent material, as a result of which the draw resistance is excessively increased.
• the element according to the invention can - from a mixture of staple fibers (staple fibers), i.e. fibers of finite length, and filaments, i.e. endless threads, or - only from staple fibers or - only from filaments consist.
• staple fibers staple fibers
• filaments i.e. endless threads
• the staple fibers and filaments according to the invention can consist of natural or synthetic thermoplastic, polymeric materials which can be shaped into staple fibers and filaments with a diameter of 0.1 to 20 ⁇ m.
• materials are Polyolefins, such as polypropylene and polyethylene, but also substituted polyolefins, such as polytrifluoroethylene, Polyamides such as nylon-66, nylon-6 and nylon 610, Polyester, such as polyethylene terephthalate - poly (methyl methacrylate), - polystyrene.
• polymer blends or copolymers can also be used.
• the staple fibers and filaments of an element according to the invention consist of a single, ie of the same polymeric material; however, the element can also consist of a mixture of staple fibers and / or filaments made of two or more polymeric materials.
• the staple fibers and filaments of an element according to the invention can have the same diameter; however, it can also be staple fibers and filaments of different diameters.
• Polypropylene with a melt index of 13 g / 10 min at 230 ° C / 2.16 kg, a density of 0.902 g / cm3 at 23 ° C and a melting range of 165-170 ° C was melted using a spinning head similar to that in accordance with German patent 25 50 463 spun into staple fibers and filaments (blow spun).
• the staple fibers and filaments were formed into a spunbonded fabric by being placed on a rotating drum.
• spunbonded webs were obtained in three experiments: - Spunbond A with a weight per square meter of 85 g and an air permeability of 65 l / min.cm2 at 50 Pascal (approx.
• Table 3 shows the values determined for the degree of ventilation and the draft resistance for the filter cigarette C during smoking.
• Tables 2 and 3 show in particular that the degree of ventilation of the original filter cigarette only increases by about 11 percent up to the ninth pull, while the degree of ventilation of the filter cigarette C increases by about 25 percent, which ultimately leads to an equalization of the Tobacco smoke yield per train and thus also leads to a reduction in the overall smoke yield in both the particle and the gas phase.
• Table 4 shows the values determined for the degree of ventilation and the draw resistance for the filter cigarette A during smoking.
• Table 5 below shows the ventilation degree and draft resistance values determined for filter cigarette B during smoking.
• discs A and B in the - ventilated - filter cigarettes achieve a very significant increase in the degree of ventilation during smoking, which of course leads to a very strong equalization of the smoke yields per train and a reduction the total smoke yield per cigarette leads.
• the invention has the following advantages:
• the ventilated cigarette according to the invention shows - compared to commercially available ventilated cigarettes - an equalization of the smoke yield when smoking step by step, whereby the taste of the tobacco smoke remains practically the same during the smoking. Furthermore, a reduction in the overall smoke yield in the particle phase as well as in the gas phase per cigarette is achieved.

Landscapes

• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Materials Engineering (AREA)
• Cigarettes, Filters, And Manufacturing Of Filters (AREA)
• Stored Programmes (AREA)
• Manufacture Of Tobacco Products (AREA)
• Vending Machines For Individual Products (AREA)
• Medicinal Preparation (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (3)

Family

ID=6305657

Family Applications (1)

Country Status (9)

Cited By (5)

Families Citing this family (10)

Family Cites Families (10)

• 1986
  • 1986-07-22 DE DE19863624661 patent/DE3624661A1/de active Granted
• 1987
  • 1987-06-06 EP EP87108239A patent/EP0254004B1/fr not_active Expired - Lifetime
  • 1987-06-06 AT AT87108239T patent/ATE100286T1/de active
  • 1987-06-06 ES ES87108239T patent/ES2048145T3/es not_active Expired - Lifetime
  • 1987-06-06 DE DE87108239T patent/DE3788829D1/de not_active Expired - Fee Related
  • 1987-06-25 ZA ZA874603A patent/ZA874603B/xx unknown
  • 1987-07-03 AU AU75225/87A patent/AU579771B2/en not_active Ceased
  • 1987-07-08 US US07/070,892 patent/US4809717A/en not_active Expired - Fee Related
  • 1987-07-21 JP JP62180190A patent/JPS6342680A/ja active Granted
  • 1987-07-21 PT PT85369A patent/PT85369B/pt not_active IP Right Cessation

Also Published As

Similar Documents

Legal Events