JPS61224975A - Production of sheet tobacco - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application 1] This invention relates to a method for manufacturing tobacco sheets, which are used as raw materials for rolled cigarettes and the like. 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. In the process of shredding tobacco leaves or other tobacco manufacturing processes, leaf waste,
Various types of tobacco waste such as 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 Publications Act 1977).
8-5919), 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 Prior Art] However, according to the conventional method, the fluidity of the raw material supplied to the forming roller is poor.

Extrusion by the forming roller becomes uneven, 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 moisture content became uneven, resulting in unstable quality.

[Problem that the invention seeks to solve]

An object of the present invention is to provide a method for manufacturing sheet cigarettes that allows sheet cigarettes with uniform width and thickness to be obtained.

[Summary of the Invention] In the method of the present invention, first, 100 parts by weight of tobacco and moisture are added to a powder containing tobacco, a binder, and 5 to 20 parts by weight of reinforcing material based on 100 parts by weight of tobacco. 2
Water is added in an amount of 5 to 35 parts by weight, and the resulting wet powder is granulated.

When the obtained granular tobacco is fed between a pair of rollers rotating in opposite directions through a hopper from above between the rollers, each granular tobacco is sandwiched between the rollers and formed into 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 an approximately constant particle size fits adjacent to the valleys between the rollers, so that the granular tobacco is not fed between the rollers. The amount of raw material used is constant, resulting in a uniform thickness of the resulting sheet tobacco. Furthermore, since the angle of repose of the granular tobacco is constant, the granular tobacco is supplied between the rollers in a constant width, and the cap and thickness of the manufactured sheet cigarettes 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 is similar to the conventionally used wet granular material,
It contains tobacco such as tobacco scraps and backbones, a binder, a reinforcing material, and if necessary, a moisturizing agent, a water-resistant agent, etc., and water is added to maintain an 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. The preferred 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. Further, as the binder, sodium carboxymethyl cellulose, methyl cellulose, ethyl cellulose, starch, sodium alginate, etc. can be used as in the past, and the content thereof is usually 1 to 15 parts by weight, preferably 3 to 15 parts by weight, based on 100 parts by weight of tobacco. It is 10 parts by weight. In addition, the wet powder may optionally contain an appropriate amount of a moisturizing agent, a water-resistant agent, etc. As a moisturizing agent, for example, a mixture of propylene glycol and corn syrup (blending ratio is, for example, 1: on a weight basis) 2) Examples of water-resistant agents 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 by a granulator, preferably having a diameter of 1 layer to 7 mm,
More preferably, there are three to five layers. Granulation is
This can be easily carried out using a well-known commercially available granulator equipped with stirring blades 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 roller 1.1 via a hopper 2, as shown in FIG. Spread on rollers. 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 granular tobacco does not spread outside the roller. Roller 1.1
If the distance between the hopper 2 and the hopper 2 is kept constant, the granular tobacco will always spread to a constant width, so that sheet tobacco with a uniform width can be obtained. In addition, since the granulated tobacco particles having a uniform diameter fit into the valleys of 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 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 method 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 disposed below the discharge path 9, and the other end of the belt conveyor 10 is connected to a raw material supply storage 11.
is placed at the top of one end of the The raw material supply storage 11 consists of a side plate 12 and a belt conveyor 13 at the bottom.

A hopper 2 is arranged below the other end side of the raw material supply storage device 11 . A pair of floodlights 14.14 are installed on the side of the hopper 2.
° are provided above and below. A pair of light receivers 15, 15° corresponding to the projector 14.14' are connected to the projector 14.14°.
It is provided on the outside of the hopper 2 via the side surface 1B opposite to the side surface on which the hopper is attached. The side surface 16 is made of a transparent material and can receive light from the projector 14.14 degrees when no granular tobacco is contained in the hopper 2. Photodetector 15.15° is photoelectric detector 1
A motor 18 that drives the belt conveyor 13 is connected to the photoelectric detector 17 . When the hopper 2 is filled with granular tobacco and the light from the projector 14° is blocked by the granular tobacco and does not reach the light receiver 15°, the motor 18 does not operate. The granular tobacco in the hopper 2 is reduced, and the amount of light emitted and the receiver 15 are reduced.
When light passes between the hopper 2 and the hopper 2, the motor 18 is activated, and the granulated tobacco in the raw material supply storage container 11 is supplied to the hopper 2 by the belt conveyor 13. When the amount of granular tobacco in the hopper 2 increases and the light from the projector 14 is blocked and no longer reaches the light receiver 15, the motor 18 is stopped and the supply of granular tobacco from the belt conveyor 13 is stopped. In this way, the top surface of the granulated tobacco in the hopper 2 is always exposed to the light emitter 14.
and 14 degrees. Hopper 2
A roller 1.1 is arranged below. The rollers each rotate in the direction of arrow 19, 19'.

When manufacturing sheet tobacco using the above-mentioned apparatus 1/1, first, components other than water of the wet powder containing tobacco described above are supplied into the granulation 114, and then the stirring blades 5 are rotated. Next, water is added and the stirring blade 5 is rotated to granulate the wet powder into granules. When the granulation is completed, the electric @S is stopped, the formed tobacco granules are discharged from the discharge passage 9 by opening the discharge passage 9, and placed on the belt conveyor 10. The 0-granule tobacco is transferred to the raw material supply storage 11 by the belt conveyor 10. The zero-grain tobacco falling onto the end of the belt conveyor 13 at the bottom of the belt conveyor 13 is transported by the belt conveyor 13 and fed to the hopper 2. Since the hopper 2 is located above the roller 1.1, the granulated tobacco is placed on the roller 1.1.
．． Supplied during 1 hour. Roller 1.1 is indicated by arrows 19,11
As it rotates in the direction of 11 degrees, the granular tobacco is sandwiched between them and becomes 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.

100 parts by weight of tobacco waste, 15 parts by weight of defibrated pulp 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, waterproofing agent 5 parts by weight of glyoxal was supplied to the commercially available granulator shown in Figure 2, mixed by rotating the stirring blade at a rotational speed of 115 rpm for 80 seconds, then 30 parts by weight of water was added, and the mixture was further stirred for 60 seconds. As a result, granulated tobacco with a diameter of about 3 to 5 layers was obtained. This was supplied between a pair of rollers from a hopper placed on the rollers to produce sheet tobacco. The circumferential speed of rotation of the roller was 75 layers/min. Because the 0-granule tobacco has good fluidity, the raw material spreads over the entire surface of the roller at the bottom of the hopper.

A sheet tobacco with uniform width and thickness was obtained.

The load current required to drive the roller at this time was measured by a conventional method. The results are shown in FIG. 3. For comparison, the load current of the roller was similarly measured when sheet tobacco was formed by the conventional method. The results are shown in Figure 4. As can be seen from these figures, the present invention has less load fluctuation than the conventional method (the coefficient of variation, which is the standard deviation divided by the average value, is about 1/2 that of the conventional method). This indicates that sheet tobacco with a uniform width and thickness 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 173 compared to that obtained by the conventional method. .

Furthermore, regarding finishing moisture, the sheet tobacco obtained by the method of this invention has a uniform width and thickness, and the flow rate of raw materials to the drying process is stable, so even if the dryer is controlled at a fixed value, it can produce a sufficiently uniform finish. Moisture obtained.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view for explaining the present invention in detail, FIG. 2 is a schematic perspective view showing an apparatus for carrying out the method of the present invention, and FIG. 3 is a schematic perspective view of a roller in the method of the present invention. FIG. 4 is a diagram showing fluctuations in the first load current value to be driven, and FIG. 4 is a diagram showing fluctuations in the load current value to drive the rollers in the conventional method. 1... Roller, 2... Hopper, 3... Granulated tobacco, 4... Granulator, 5... Stirring blade. 11... Raw material supply storage device, 13. Fist belt conveyor, 14, 14°... Emitter, 15, 15° - Receiver, 17... Photoelectric converter, 18... Motor diagram.

Claims (1)

[Claims] One part of tobacco is added to a powder containing tobacco, a binder, and 5 to 20 parts by weight of reinforcing material based on 100 parts by weight of tobacco.
Adding water to make the moisture content 25 to 35 parts by weight (00 parts by weight) and granulating the granulated tobacco, and passing the granulated tobacco thus obtained into a hopper from above between a pair of rollers rotating in opposite directions. A method for manufacturing a sheet cigarette, comprising the step of feeding the sheet cigarette between the rollers through the cigarette.