JPS59159767A - Reduction of tar producing amount - 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 The present invention relates to a method for reducing the amount of tar produced during cigarette smoking (hereinafter simply referred to as smoking).

The purpose of the present invention is to eliminate major changes in the manufacturing process of cigarette wrapping materials (hereinafter simply referred to as wrapping materials) and cigarette wraps (hereinafter simply referred to as wrappers) and to avoid deterioration of their environmental conditions by combining a flame retardant and a flame improver. Another object of the present invention is to provide a method for reducing the amount of tar produced during smoking without substantially changing the number of puffs during smoking.

Yet another object is to provide a method for reducing the total amount of tar produced during smoking without changing the overall air permeability of the roll material.

Here, the term “rolling material” refers to rolling paper produced by general papermaking,
Flame retardants include inorganic substances, hydrocarbon compounds, and 9/acid. They should be selected singly or in combination from phosphorus, bromine, chlorine, and other compounds such as ammonium, ammonium sulfamate, antimono compounds, lower alkyl phosphites, and hydroxymethylphosphonium. Preferably, among hydrocarbon compounds, cellulose derivatives such as carboxymethyl cellulose,
Pectin, gum, starch! 1Aft-, and these hydrocarbon compounds also function as a binder during the production of sheet-like materials.

The combustion improver is nitric acid, tartaric acid, phosphoric acid, hexamaric acid or
They are selected singly or in combination from salts of alkali metals and alkaline earth metals such as citric acid.

The present invention involves adding a flame retardant to the winding material or coating the surface of the winding material not in contact with the grooves, and further applying a flame retardant to the surface in contact with the grooves or adding the flame retardant during the process. This is achieved by a combination of coating addition methods.

The flammability test of the winding material was carried out in accordance with the flame contact test method of the flammability test method for textile products of Japanese Industrial Standard JIS-L1091. In this method, the length is 200tn and the width is 27mm.
m of winding material is wound using a cylinder with an outer diameter of 8 mm, and the length of the cylindrical winding material is f 100 ten. This was installed in advance at an angle of 45 degrees from the vertical plane with an inner diameter of 1 (1w11).
．． A flame-retardant winding material of 0.5 mm wire diameter is inserted into a coil with a heat resistance of 2 mm, and the lower end of this sample is exposed to a flame with a burner to incinerate the cylindrical winding material to 90 mm f. At this time, calculate the number of burner flame contacts and the burning speed of the winding material with good combustibility, repeat the above procedure 5 times, and calculate the average number of flame contacts and average burning speed (ram/SEC). Table 1 shows the relationship between the addition of flame retardant and the combustibility of the winding material.

Table 1 shows that the addition of flame retardants increases the number of flame contacts and worsens combustibility.

According to the present invention, the flame retardant wrapping material refers to a wrapping material that has been exposed to flame 1.5 times or more, preferably within the range of 1.5 to 15 times.The air permeability of the wrapping material is 1-1. The winding material is subjected to a constant differential pressure (100 water column)
It is expressed as the amount of air passing through each minute (-) in Coresta units.

Changing the air permeability of the winding material causes changes in the air permeability and suction resistance of the winding material, which causes various problems related to the manufacture of the winding product, such as changing the design conditions of the filter, and should be avoided.

Conventionally, regarding the reduction of O sidestream smoke during smoking, US Patent No. 4,231,377 and Japanese Patent Publication No. 1983
No. 163,479 of 1997 is publicly known. Regarding the reduction of mainstream smoke and sidestream smoke during smoking, Japanese Patent Publication No. 61.699 of 1972 is known.

US Pat. No. 4,231,377 completely reduces sidestream smoke by adding a magnesium compound such as magnesium oxide or magnesium hydroxide to the wrapping material, but there is no mention of mainstream smoke.

Japanese Patent Publication No. 163.479, issued in 1982, uses wrapping materials with low air permeability (about 0.5 to 8 Coresta) to reduce sidestream smoke, but does not mention mainstream smoke. Also, there is a drawback that mainstream smoke and the number of puffs tend to increase.

Japanese Patent Publication No. 61,699 of 1972 is 0.1
Activated carbon with a particle size of 77 mm or less and containing 25% to 50%/t of 0D particle size of 44 mm or less,
The side of the wrapping material containing activated carbon added up to about 70% of the wrapping material is wrapped with wrapping paper manufactured by general paper making (and the outer side is wrapped with wrapping paper manufactured by general paper making), which separates mainstream smoke and sidestream smoke. However, instead of using a wrapping material with a thickness of about 0', 03 mm) to 0.04 mm, we use activated carbon-added wrapping material with a maximum thickness of 0.177 mm. As a result, the thickness of the winding material becomes extremely thick, which interferes with the hoisting operation using a regular hoist and requires a modification of the hoist or a new hoist. It has the drawback that it requires development, etc. and is not practical.Even if it is possible to hoist it with a hoisting machine,
Another drawback is that the activated carbon may peel off or fall off during hoisting, worsening the environmental conditions related to hoisting, and that maintenance and maintenance of the hoisting machine is difficult.

According to the present invention, the above-described objective of reducing the amount of tar generated is achieved by (a) adding a flame retardant to the tobacco wrapping material, and coating a flame improver on the surface of the wrapping material that comes into contact with shredded tobacco; . Φ
) A flame retardant is added to the cigarette wrapping material, and a flame improver is added to the cigarette wrapper wrapped with the cigarette wrapping material. (C) A flame retardant is applied to the surface of the cigarette wrapping material that does not come into contact with the shredded tobacco, and a flame improver is applied to the surface of the cigarette wrapping material that comes into contact with the shredded tobacco.

(d) Any of the above (a) to (d), in which a flame retardant is coated on the side of the cigarette wrapping material that does not come into contact with the shredded tobacco, and a flame improver is added to the cigarette wrapper wrapped with the wrapping material. This is accomplished by a method selected from the following.・Compared to the untreated roll material, the rolled material treated with this method has almost no change in appearance or thickness, has almost no change in air permeability, and has almost no change in the number of puffs during smoking, and has less tar when smoked. The amount produced can be reduced.

Example] Winding length: 53 mm, acetate filter length: 1
7 days, standard size with filter, total length 80mm, outer circumference 25WIn, roll sample A- processed by the method of the present invention.
Five types of E and a normal volume sample F for comparison.
A total of 6 types of rolls (control) were prepared and subjected to a smoking test according to the following method.

The sample side of the volume, the type of flame retardant and flame improver, the method of addition, and the amount added are as shown in Table 2.

Furthermore, the air permeability and combustibility of the rolled material treated by the method of the present invention are also listed in Table 2 for reference.

Next, the rolled sample prepared as described above was placed in a fully automatic smoker and smoked under standard conditions. The automatic smoker is configured in advance so that it can separately collect and collect all of the tar in the mainstream smoke and sidestream smoke generated during smoking.

Here, the standard conditions are a combustion length of 50 cm, a smoking frequency of 1 time/
The smoking method has a smoking capacity of 35 minutes/time, and a smoking time of 2 seconds/time.

Tar was collected using a Cambridge filter, and the amount of tar produced was determined by subtracting water from the difference in weight before and after collection with the Cambridge filter. In addition, each sample to be tested in the automatic smoker was 5 times A, and this was repeated 3 times.
The above results are shown in Table 3, which is the average amount of tar calculated in terms of the weight of one roll.

As can be seen from Table 3, it can be seen that in volumes A to E, the amount of tar in both the mainstream smoke and the amount of tar in sidestream smoke is reduced compared to the control volume F.

In particular, in Volumes A and D, the amount of tar in the mainstream smoke is around 15 inches, and the amount of tar in the sidestream smoke is around 50 inches, each lower than the control volume F.

As is clear from the above explanation, the method according to the present invention can produce tar during smoking without changing the air permeability of the wrapping material or the number of puffs. ■It is possible to reduce.

Claims (1)

[Claims] (a) All flame retardants are added to the cigarette wrapping material, and a flame retardant is coated on the surface of the cigarette wrapping material that comes into contact with shredded tobacco. A combustion agent is added, and a combustion improver is added to the cigarette that is wrapped with the wrapping material. (C) A flame retardant is coated on the side of the cigarette wrapping material that does not come into contact with the shredded tobacco, and a flame improver is coated on the side of the cigarette wrapping material that comes into contact with the shredded tobacco.C (d) Tobacco of the cigarette wrapping material A cigarette wrapper selected from any of (a) to (d) above, in which a flame retardant is coated on the surface that does not come into contact with the tobacco wrapper, and a flame improver is added to the cigarette wrapper wrapped with the wrapper material. A method for reducing the amount of tar generated when smoking a cigarette without changing the air permeability of the material or the number of puffs when smoking a cigarette.