A kind of destructive distillation type cigarette
The invention belongs to cigarette field, be specifically related to a kind of destructive distillation type cigarette.
Background technology
There are some researches show, nicotine and most tobacco flavor composition at a lower temperature (300-500 ℃) just can be transferred in flue gas.If cigarette temperature is reduced to 600 ℃ following (approximately 700 ℃ of tobacco burning-points), the multiple harmful components of flue gas can significantly reduce, and the impact that flavor component is subject to is relatively little.Therefore, a kind ofly use the cigarette that carbon heat source carries out destructive distillation tobacco component to be invented.
Destructive distillation type cigarette is mainly made up of four major parts, i.e. thermal source section, retort section, filled section and chew rod section.Wherein thermal source section is take carbon-point as basis, and skin wraps up air-permeable layer and regular-size cigarette paper successively; Retort section is divided into three layers from inside to outside successively, and ground floor is destructive distillation pipe tobacco, and the second layer is heat conductivity heat-insulating layer, and the 3rd layer is fire-retardant integument, and the second layer and the 3rd layer are aluminium-foil paper; Two effects are mainly played in filled section, and the one, supplement atomized feed is provided, the 2nd, reduce the flue-gas temperature after destructive distillation atomization, prevent from scalding, this part is made up of the airtight cigarette paper of tobacco product and parcel tobacco product.
What the cigarette carbon heat source of R.J. Rainolds Tobacco CO. adopted is the mode of glass fibre parcel carbon-point, but carbon-point is that extruding forms, inner closely knit, need the ventilative glass fibre of outer parcel for forming thermal current, have research to think, this particle enables to be held back by filter tip material, but in the processes such as packing, is adsorbed onto on filter tip unavoidably, thereby cause sucking, health risk, meanwhile, the also more very thin carbonaceous filamentary material difficult point combustion of closely knit carbon-point.
Summary of the invention
The object of the invention is for above-mentioned deficiency, a kind of destructive distillation type cigarette of the carbon heat source with nature space is provided, thus the harm that minimizing glass fibre suction human body causes the combustibility that improves carbon heat source.
Above-mentioned purpose is achieved through the following technical solutions:
A kind of destructive distillation type cigarette, comprise thermal source section, retort section, filled section and chew rod section, described thermal source section, retort section, filled section and chew rod section and connect successively, described thermal source section comprises carbon heat source and is wrapped in the outer field cigarette paper of carbon heat source, and the inside of described carbon heat source is provided with the hole connecting vertically.
Between described carbon heat source and cigarette paper, be also provided with metal level, described metal level is provided with netted pore.
Preferably, described metal is aluminium foil.
As a kind of preferred version, described carbon heat source is to roll by sheet carbonaceous material the sandwich construction forming, and described hole is located between sheet carbonaceous material.
As another kind of preferred version, described carbon heat source is to roll by thread carbonaceous material the loose structure forming, and described hole is located between thread carbonaceous material.
Described thread carbonaceous material is along cigarette axial distribution.
Described netted pore can not allow the ball of diameter 3mm pass through.
The resistance to suction of described thermal source section is 10-40Pa/mm.
The invention has the beneficial effects as follows:
1) itself there is natural space in the thermal source section in the present invention, flexible, be convenient to cigarette processing, and carbon-point in existing thermal source section to be extruding form, inner closely knit, for forming the needs of ventilative and cigarette flexibility, skin will wrap up ventilative glass fibre, and carbon heat source in the present invention does not wrap up with glass fibre, thereby reduce glass fibre to suck human body and the harm that causes.
2) because the thermal source section in the present invention is provided with the space connecting vertically, have good air stream through passage, therefore the combustibility of thermal source section of the present invention is better than the combustibility of the thermal source section of preparing with same material, and the atomizing effect of pipe tobacco is also better.
3) the present invention is simple in structure, easily manufactured, and production cost is low.
Accompanying drawing explanation
Fig. 1 is the structural representation of destructive distillation type cigarette;
Fig. 2 is the radial section schematic diagram of sheet carbonaceous material thermal source section;
Fig. 3 is the radial section schematic diagram of thread carbonaceous material thermal source section.
In figure: 1-thermal source section (1a-carbon heat source, 1b-cigarette paper, 1c-hole, 1d-metal level), 2-retort section (2a-destructive distillation pipe tobacco, 2b-heat conductivity heat-insulating layer, the fire-retardant integument of 2c-), 3-filled section (3a-tobacco product, 3b-cigarette paper), 4-chews rod section.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described in detail.
Embodiment 1
As depicted in figs. 1 and 2, a kind of destructive distillation type cigarette, by thermal source section 1, retort section 2, filled section 3 and chew rod section 4 and form, described thermal source section 1, retort section 2, filled section 3 and chew rod section 4 and connect successively, described thermal source section 1 comprises carbon heat source 1a and is wrapped in the outer field cigarette paper 1b of carbon heat source 1a, described retort section 2 is destructive distillation pipe tobacco 2a, heat conductivity heat-insulating layer 2b, fire-retardant integument 2c from inside to outside successively, and described filled section 3 forms by tobacco product 3a with for the cigarette paper 3b that wraps up tobacco product 3a.
The inside of carbon heat source 1a is provided with the hole 1c connecting vertically, and carbon heat source 1a rolls by sheet carbonaceous material the sandwich construction forming, and rolls the hole of the self-assembling formation between layers 1c at sheet carbonaceous material in process.The resistance to suction of thermal source section 1 is 40Pa/mm.
Embodiment 2
As shown in figures 1 and 3, a kind of destructive distillation type cigarette, by thermal source section 1, retort section 2, filled section 3 and chew rod section 4 and form, described thermal source section 1, retort section 2, filled section 3 and chew rod section 4 and connect successively, described thermal source section 1 comprises carbon heat source 1a and is wrapped in the outer field cigarette paper 1b of carbon heat source 1a, described retort section 2 is destructive distillation pipe tobacco 2a, heat conductivity heat-insulating layer 2b, fire-retardant integument 2c from inside to outside successively, and described filled section 3 forms by tobacco product 3a with for the cigarette paper 3b that wraps up tobacco product 3a.
The inside of carbon heat source 1a is provided with the hole 1c connecting vertically, carbon heat source 1a rolls by thread carbonaceous material the loose structure forming, thread carbonaceous material is along cigarette axial distribution, roll in process the silk of thread carbonaceous material with thread between self-assembling formation hole 1c.Between carbon heat source 1a and cigarette paper 1b, be also provided with metal level 1d, metal level 1d is provided with netted pore, and netted pore can not allow the ball of diameter 3mm pass through, and metal is aluminium foil.The resistance to suction of thermal source section 1 is 10Pa/mm.
The effect of metal level 1d is: 1) reduce the charcoal ash producing after carbon heat source 1a burning and come off, for the abundant burning of carbonaceous material provides certain thickness ash content insulation; 2) in the time of burning, owing to there being cigarette paper to cover netted pore, can forced air flow through burning red heat region, reach the object that adds hot-air, after burning, the partial mesh pore that catches fire exposes, in adding hot-air, also for the carbonaceous material burning that is embedded in rear portion provides air duct, avoid extinguishing.