JPS641113B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to the production of cigarettes, which are used as raw materials for rolled cigarettes, etc.
This invention relates to a method for manufacturing tobacco sheets. More specifically, the present invention relates to a method for manufacturing sheet cigarettes obtained by binding tobacco waste such as tobacco powder with a binder.

[Prior Art] For ordinary tobacco such as rolled cigarettes, so-called shredded tobacco, which is made by shredding tobacco leaves, is used. BACKGROUND ART In the process of shredding tobacco leaves or other tobacco manufacturing processes, various tobacco wastes such as leaf scraps, shreds, powdered tobacco, and backbones are generated. In order to make effective use of these tobacco scraps, conventional methods have been to bind tobacco scraps with a suitable binder, add reinforcing materials, moisturizers, etc. to this, extrude it between rolling rollers, form a sheet, and attach it to one of the rollers. Sheet cigarettes are manufactured by peeling off the sheet with a doctor's knife (Special Publication No. 48-5919). This sheet tobacco is shredded and mixed with cut tobacco to be used as a raw material for rolled cigarettes and the like.

[Disadvantages of the Prior Art] However, according to the conventional method, the fluidity of the raw material supplied to the forming roller is poor, resulting in non-uniform extrusion by the forming roller, resulting in large fluctuations in the width and thickness of the sheet tobacco. For this reason,
The amount of raw material supplied to the next drying process also fluctuated, and as a result, the finished product's moisture content was uneven, resulting in unstable quality.

[Problems to be Solved by the Invention] An object of the present invention is to provide a method for manufacturing sheet cigarettes that can produce sheet cigarettes with uniform width and thickness.

[Summary of the Invention] In the method of the present invention, first, 100 parts by weight of tobacco is added to a powder containing tobacco, a binder, and 5 to 20 parts by weight of a reinforcing material based on 100 parts by weight of tobacco. Water is added in an amount of 25 to 35 parts by weight, and the resulting wet powder is granulated. When the obtained granular tobacco is fed through a hopper from above between a pair of rollers rotating in opposite directions, the granular tobacco is sandwiched between the rollers and becomes a sheet, thereby obtaining a sheet tobacco.

[Effects of the Invention] According to the method of the present invention, the granular tobacco has high fluidity and the granular tobacco having a substantially constant particle size fits adjacent to the valleys between the rollers, so that the granular tobacco is supplied between the rollers. The amount of raw materials is constant,
As a result, the thickness of the resulting sheet tobacco becomes uniform. Furthermore, since the angle of repose of the granular tobacco is constant, the granular tobacco is supplied between the rollers with a constant width, and the width and thickness of the manufactured sheet cigarette are uniform.

[Detailed Description of the Invention] In the method of the present invention, first, a wet granular material in which tobacco such as tobacco waste is bound with a binder is prepared. This wet granular material, like the conventionally used wet granular material, contains tobacco such as tobacco scraps and backbones, a binder, a reinforcing material, and if necessary, a moisturizing agent, a waterproofing agent, etc. Water is added to achieve the appropriate moisture content. In the method of this invention,
The wet powder contains 5 to 20 parts by weight of reinforcing material and 25 to 35 parts by weight of water based on 100 parts by weight of tobacco. As the reinforcing material, a conventionally used defibrated pulp product is preferable. The tobacco content in the wet granules is usually 75 to 95%, preferably 80 to 90%, based on the total weight of the granules before adding water. In addition, the binders used are sodium carboxymethyl cellulose, methyl cellulose, ethyl cellulose, starch,
Sodium alginate or the like can be used, and its content is usually 1 to 15 parts by weight, preferably 3 to 10 parts by weight, based on 100 parts by weight of tobacco. Further, the wet powder may optionally contain an appropriate amount of a moisturizing agent, a water-resistant agent, and the like. As a humectant, for example, a mixture of propylene glycol and corn syrup (blending ratio, for example, 1:2 on a weight basis),
Examples of the water resistance agent include glyoxal. The wet granular material can be manufactured by mixing each component other than water, and then adding and mixing water. These mixtures can be performed in a granulator, which will be described later.

In the method of this invention, the wet powder is then granulated using a granulator. The diameter of the grains is preferably 1mm.
The range is from 3 mm to 7 mm, more preferably from 3 mm to 5 mm. Granulation can be easily carried out using a well-known commercially available granulator equipped with a stirring blade at the bottom.

Next, the granular tobacco thus obtained is fed between a pair of rolling rollers that rotate in opposite directions. This supply is carried out from above the rollers 1, 1 via a hopper 2, as shown in FIG. The granulated tobacco 3 supplied from the hopper 2 is
As shown in the figure, it spreads out on a roller with a constant angle of repose. In this case, the distance between the hopper and the roller is determined based on the width of the roller and the angle of repose so that the granulated tobacco does not spread outside the roller. If the distance between the rollers 1, 1 and the hopper 2 is kept constant, the granulated tobacco will always spread to a constant width, so that sheet tobacco with a uniform width can be obtained. Further, since the granular tobacco having a substantially uniform diameter is fitted into the valley between the rollers 1, 1 in a state where they are adjacent to each other, the amount of tobacco fed between the rollers is constant, and a sheet tobacco with a uniform thickness can be obtained.

The sheet-shaped tobacco extruded from between the rollers adheres to one of the rollers, but when this is peeled off with a doctor knife as in the past, a sheet tobacco is obtained.

The object of the invention can be carried out continuously using an apparatus such as that shown in FIG.

The granulator 4 is a widely known commercially available device having stirring blades 5 at the bottom and baffle plates 6 at the upper inner surface. The stirring blade 5 is driven by an electric motor 8 via a power transmission means 7. A discharge passage 9 for discharging the granulated tobacco granulated by the granulator 4 is provided at the bottom of the granulator. An end of a belt conveyor 10 is arranged below the discharge path 9,
The other end of the belt conveyor 10 is a raw material supply storage device 1
1 at the top of one end. The raw material supply storage 11 has a side plate 12 and a belt conveyor 1 at the bottom.
It consists of 3. A hopper 2 is arranged below the other end side of the raw material supply storage device 11 . A pair of projectors 14, 14' are provided on the side surface of the hopper 2, one above the other. A pair of light receivers 15, 15' corresponding to the projectors 14, 14' are provided on the outside of the hopper 2 via a side surface 16 opposite to the side surface on which the projectors 14, 14' are attached. The side surface 16 is made of a transparent material, and when there is no granulated tobacco in the hopper 2, the projector 14, 14'
can receive light from light receiver 15,
15' is connected to the photoelectric detector 17, and the motor 18 that drives the belt conveyor 13 is connected to the photoelectric detector 1.
7 is connected. The motor 18 does not operate when the hopper 2 is filled with granulated tobacco and the light from the projector 14' is blocked by the granulated tobacco and does not reach the light receiver 15'. Particulate tobacco in the hopper 2 is reduced, and the floodlight 1
When light passes between 4' and the light receiver 15', the motor 18 is activated, and the granulated tobacco in the raw material supply storage device 11 is supplied into the hopper 2 by the belt conveyor 13. The amount of granular tobacco in Hoppa 2 increases,
When the light from the projector 14 is blocked and no longer reaches the light receiver 15, the motor 18 stops and the supply of granular tobacco from the belt conveyor 13 stops. In this way, the upper surface of the granulated tobacco in the hopper 2 is controlled to be located between the projectors 14' and 14. Rollers 1, 1 are arranged below the hopper 2. The rollers rotate in the directions of arrows 19, 19', respectively.

When manufacturing sheet tobacco using the above-mentioned apparatus, first, components other than water of the wet powder containing the above-mentioned tobacco are supplied into the granulator 4, and mixed by rotating the stirring blade 5. . Next, when water is added and the stirring blade 5 is rotated, the wet powder is granulated into granules. When the granulation is completed, the electric motor 8 is stopped, and the formed granular tobacco is discharged from the discharge passage 9 by opening the discharge passage 9 and placed on the belt conveyor 10.
The granulated tobacco falls by the belt conveyor 10 onto the end of the belt conveyor 13 at the bottom of the raw material supply reservoir 11. The granulated tobacco is transported by a belt conveyor 13 and supplied to the hopper 2.
Since the hopper 2 is located above the rollers 1,1, the granulated tobacco is fed between the rollers 1,1. As the rollers 1, 1 rotate in the directions of arrows 19, 19', the granulated tobacco is sandwiched between them and shaped into a sheet, forming a sheet tobacco.
The formed sheet tobacco adheres to one of the rollers, and is peeled off with a doctor knife (not shown) to obtain a sheet tobacco.

Examples: 100 parts by weight of tobacco waste, 15 parts by weight of pulp disintegration equipment as a reinforcing material, 3 parts by weight of carboxymethylcellulose sodium salt as a binder, 5 parts by weight of propylene glycol and 8 parts by weight of corn syrup as humectants, and as a water-repellent agent. 5 parts by weight of glyoxal were supplied to a commercially available granulator shown in FIG. 2, and mixed by rotating a stirring blade for 80 seconds at 1150 rpm. Next, 30 parts by weight of water was added and the mixture was further stirred for 60 seconds to obtain granulated tobacco with a diameter of about 3 to 5 mm. This was supplied between a pair of rollers from a hopper placed on the rollers to produce sheet tobacco. The rotational speed of the roller is 75m/
It was hot in minutes. Because granular tobacco has good fluidity, the raw material spreads over the entire surface of the roller at the bottom of the hopper, resulting in sheet tobacco with uniform width and thickness.

The load current required to drive the roller at this time was measured by a conventional method. The results are shown in Figure 3. For comparison, the load current of the roller was similarly measured when sheet tobacco was formed using the conventional method. The results are shown in Figure 4. As can be seen from these figures, this invention has less variation in load than the conventional method (the coefficient of variation, which is the standard deviation divided by the average value, is about 1/2 of the conventional method), and the width and thickness This indicates that uniform sheet tobacco was obtained.

Furthermore, when the thickness of the obtained sheet cigarette was measured in the width direction and machine direction, the coefficient of variation of the thickness of the sheet cigarette obtained by the method of this invention was 1/3 of that obtained by the conventional method. was. Furthermore, regarding finished moisture, the sheet tobacco obtained by the method of this invention has a uniform width and thickness;
Because the flow rate of raw materials to the drying process was stable, even when the dryer was controlled at a constant value, a sufficiently uniform finished moisture content was obtained.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view for explaining the method of this invention, FIG. 2 is a schematic perspective view showing an apparatus for carrying out the method of this invention, and FIG. 3 is a schematic perspective view of a roller in the method of this invention. FIG. 4 is a diagram showing variations in the load current value used to drive a roller in a conventional method. 1...roller, 2...hopper, 3...granular tobacco,
4... Granulator, 5... Stirring blade, 11... Raw material supply storage device, 13... Belt conveyor, 14, 14'... Light emitter, 15, 15'... Light receiver, 17... Photoelectric converter,
18...Motor.

Claims (1)

[Claims] 1 Powder containing tobacco, a binder, and 5 to 20 parts by weight of reinforcing material based on 100 parts by weight of tobacco, and a moisture content of 25 to 35 parts by weight based on 100 parts by weight of tobacco.
A step of adding water and granulating it so that it becomes parts by weight,
A method for producing a sheet cigarette comprising the step of feeding the granular tobacco thus obtained between a pair of rollers rotating in opposite directions from above through a hopper.