Classifications

• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
  • A24B3/00—Preparing tobacco in the factory
  • A24B3/18—Other treatment of leaves, e.g. puffing, crimpling, cleaning
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
  • A24B3/00—Preparing tobacco in the factory
  • A24B3/18—Other treatment of leaves, e.g. puffing, crimpling, cleaning
  • A24B3/182—Puffing

Definitions

• the invention relates to a method for increasing the fillability of tobacco materials, such as for example cut tobacco leaves, ribs or plant-based tobacco additives with cellular structure, by treatment of the tobacco material, which has 8 to 16 wt. % initial moisture, with a treatment gas consisting of nitrogen and/or argon at pressures of 50 to 1,000 bar in either one autoclave or with cascade-type switching in several autoclaves followed by thermal after-treatment of the tobacco material discharged after decompression has occurred.
• a treatment gas consisting of nitrogen and/or argon at pressures of 50 to 1,000 bar in either one autoclave or with cascade-type switching in several autoclaves followed by thermal after-treatment of the tobacco material discharged after decompression has occurred.
• a tobacco material with reduced moisture of 10 to 15 wt. % is additionally used at an operating temperature below 50° C., to achieve greater cooling of the tobacco material to be discharged when the tension is released.
• the pressure reduction times in this case are 1.3 to 2 minutes.
• DE 34 14 625 C2 discloses a cascade method, according to which after cooling of the treatment gas before admitting it into the reactor, cooling of the autoclave or use of an undercooled and liquefied treatment gas, a lower impregnation temperature of the tobacco is [achieved].
• the pressure reduction times amount to 0.5 to 10, especially 1 to 2 minutes.
• the minimum temperatures of the tobacco discharged should be below 0° C.
• the aim of the invention is to improve the existing INCOM methods and to achieve equally good or better degrees of expansion independently of expensive cooling measures.
• a method is therefore proposed of the type initially mentioned in accordance with the patent claim preamble, characterised in that the decompression is carried out with at least one holding stage, whose pressure corresponds to 3 to 60%, preferably 3 to 30% of the original maximum pressure and in that the heating of the system whilst under residual pressure is carried out in such a way that the tobacco discharge temperature following full pressure reduction lies within the range 10 to 80° C.
• the pressure reduction from the maximum pressure in question to the pressure of the holding stage is preferably carried out within an interval of 20 seconds to 5 minutes, whilst the reduction of the residual pressure is carried out within an interval of 3 seconds to 3 minutes.
• the high pressure treatment or the sequence of high pressure treatment and thermal treatment is carried out several times with the same tobacco material.
• the high pressure treatment was carried out with a treatment gas consisting of nitrogen in a laboratory autoclave with a used content of 2 l, wherein to adjust the desired operating temperatures, a casing was used for circulation of the liquid media.
• the pressure build-up/gas supply to the autoclave took place from below, the pressure reduction/gas discharge from the autoclave took place upwards.
• a compressor was used, whilst the tobacco temperature was measured in the upper section or upper half of the tobacco filling unit with a thermocouple element.
• the laboratory device for thermal after-treatment of the tobacco consisted of a permeable conveyor belt/wire gauze, which was driven at a speed of approx. 5 cm/s.
• the tobacco mat guided between baffles was after-treated under a steam nozzle approx. 160 mm wide with a slit-type outlet of approx. 8 mm with approx. 10 kg/h saturated steam.
• -A steam suction device was situated below the conveyor belt opposite the steam nozzle.
• the fillabilities were determined by means of a Borgwaldt density meter and the specific volume converted into ml/g with a nominal moisture of 12 wt. % and a nominal temperature of 22° C. From the data of the untreated comparison sample and the expanded sample, the relative improvement in fillability and/or the degree of expansion is calculated as follows:
• T A means the discharge temperature of the tobacco subjected to high-pressure treatment.
• test 1 during the pressure reduction, two holding stages each lasting 2 minutes at 400 bar and 100 bar were applied, and in tests 2 and 3 only one holding stage lasting 2 min/4 min at 50 bar was applied.
• test no. 4 the pressure reduction took place directly, i.e. without a holding stage in a pressure reduction time of ⁇ 1 min.
• Example 2 A procedure similar to that of Example 2 was followed, wherein during pressure reduction, the pressure was kept constant at 50 bar for a holding stage of 1 min and heated gas from a second autoclave, designated the “donor” was introduced into the treatment container.
• the donor before the transfer, had a pressure of 100 bar and an operating temperature of 80° C. with a content of 4 l.
• the gas supply during pressure reduction and during transfer now took place from below, the gas outlet with holding stage and pressure reduction upwards.
• TABLE 3 Test results Operating temperature 40° C. No. Operation during pressure reduction T A ° C. ⁇ % 7 Holding stage 1 min at 50 bar, transfer 16 89 from donor, pressure 100 bar Operating temperature 60° C.
• examples 2 and 3 above show that the circulation according to example 2 via a heat exchanger or the transfer of gas from the donor according to example 3 with a constant holding stage/constant pressure also lead to a raised operating temperature when the operating temperature of the gas-containing treatment container, designated the “acceptor” is 40° C.
• a first stage 150 g tobacco were subjected to high-pressure treatment at an operating temperature of the autoclave of 60° C., analogously to example 3 by transfer of heated treatment gas from the donor with a holding stage with constant pressure. Before the transfer the donor had a pressure of 300 bar and an operating temperature of 80° C.; the holding stage was adjusted to 1 min at 200 bar.
• the tobacco material from the first stage, expanded and conditioned according to test no. 10 was used as base material for a further cycle of treatment consisting of high-pressure treatment and thermal after-treatment.
• the high-pressure treatment was carried out with 100 g tobacco and at an operating temperature of the autoclave of 60° C., and a holding stage of 1 min at 100 bar was provided during pressure reduction.
• the donor container before the transfer possessed a pressure of 200 bar at an operating temperature of 80° C., the results of this test and test no. 10 are shown by Table 5.
• TABLE 5 Test results Operating temperature 60° C. No. Operation during pressure reduction T A ° C. ⁇ % 10 Holding stage 1 min at 200 bar, 26 86 transfer from donor, pressure 300 bar Operating temperature 80° C. 11 Holding stage 1 min at 100 bar, 24 116 transfer from donor, pressure 200 bar (Treatment Operating temperature 80° C. of expanded tobacco from test 10)
• stage 2 Whereas the expanded tobacco material of stage 1 from example 5 was used for renewed treatment in stage 2, in this example 6 the pressure treatment cycle was carried out twice in succession and only then was the pressure-treated tobacco material subjected to the thermal after-treatment. Both methods are based on the principle of a multiple expansion by repetition of the sequence of high-pressure treatment and thermal after-treatment or one repeated high-pressure treatment only followed by thermal after-treatment.
• Example 5 shows that the effect of the first expansion stage can be further increased by the renewed treatment in stage 2 and a tobacco material with extremely high fillability is obtained.
• Example 6 is simpler, due to the omission of an after-treatment stage, but does not reach the maximum value of example 5.

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• 2000
  • 2000-02-14 DE DE10006424A patent/DE10006424C2/de not_active Expired - Fee Related
• 2001
  • 2001-02-05 CN CN01804935A patent/CN1400873A/zh active Pending
  • 2001-02-05 CZ CZ20023080A patent/CZ20023080A3/cs unknown
  • 2001-02-05 IL IL15079101A patent/IL150791A0/xx unknown
  • 2001-02-05 EP EP01902411A patent/EP1255460B1/de not_active Expired - Lifetime
  • 2001-02-05 ES ES01902411T patent/ES2243436T3/es not_active Expired - Lifetime
  • 2001-02-05 EA EA200200855A patent/EA003544B1/ru not_active IP Right Cessation
  • 2001-02-05 DE DE50106887T patent/DE50106887D1/de not_active Expired - Lifetime
  • 2001-02-05 HU HU0204445A patent/HUP0204445A2/hu unknown
  • 2001-02-05 BR BR0108338-4A patent/BR0108338A/pt not_active Application Discontinuation
  • 2001-02-05 EE EEP200200447A patent/EE200200447A/xx unknown
  • 2001-02-05 WO PCT/EP2001/001227 patent/WO2001058295A1/de not_active Ceased
  • 2001-02-05 MX MXPA02007848A patent/MXPA02007848A/es unknown
  • 2001-02-05 AT AT01902411T patent/ATE300198T1/de not_active IP Right Cessation
  • 2001-02-05 KR KR1020027010638A patent/KR20020075429A/ko not_active Withdrawn
  • 2001-02-05 JP JP2001557417A patent/JP2003525036A/ja not_active Withdrawn
  • 2001-02-05 PL PL01357092A patent/PL194440B1/pl unknown
  • 2001-02-05 SK SK1331-2002A patent/SK13312002A3/sk unknown
  • 2001-02-05 AU AU30248/01A patent/AU3024801A/en not_active Abandoned
  • 2001-02-05 US US10/182,732 patent/US20030075191A1/en not_active Abandoned
  • 2001-02-05 CA CA002400068A patent/CA2400068A1/en not_active Abandoned
  • 2001-02-14 AR ARP010100652A patent/AR034404A1/es unknown
  • 2001-05-02 UA UA2002097455A patent/UA72315C2/uk unknown
• 2002
  • 2002-08-09 NO NO20023781A patent/NO20023781L/no not_active Application Discontinuation
  • 2002-09-13 BG BG107104A patent/BG107104A/xx unknown

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