CN103478902B - A kind of composite cigarette filter stick and preparation method thereof - Google Patents

Abstract

The invention discloses a composite cigarette filter rod and a preparation method thereof. The cigarette composite filter rod is made by compounding the filter rod composed of tobacco stem fiber, expanded stem shreds, stem slices, low-grade tobacco leaf shreds, thin slices and acetate fiber. The present invention makes full use of tobacco stem waste and low-grade tobacco leaves as raw materials, mixes tobacco stem fibers, stem pieces and shredded tobacco with different shapes, lengths and diameters, and rolls them into filter rods. The parameters of filter rods made of shredded or cut tobacco are stable, and the variability of draw resistance is small. Moreover, the invention has low cost and environmental protection; it can be processed by ordinary cigarette making machines without additional equipment.

Description

A kind of composite cigarette filter rod and preparation method thereof

technical field

The invention belongs to the field of tobacco processing, and in particular relates to a composite cigarette filter rod and a preparation method thereof.

Background technique

Existing cigarette filter rods are generally acetate fiber and polypropylene fiber filter rods, and waste materials and discarded cigarette butts generated during the production of these filter rods are not easy to degrade and will cause environmental pollution. Many people have conducted research on plant fiber filter rods, such as CN101703314A, etc., which use rice straw, wheat straw, straw fiber, etc. as filter rod raw materials. Although they are easy to degrade, these fibers inevitably bring their own miscellaneous taste, which affects the quality of cigarettes. smell. Therefore, in the patent documents CN201310057094.1 and CN201310057010.4, tobacco stem shreds or flakes are respectively used to make filter sticks, and tobacco stem fibers and tobacco flakes are used to prepare filter sticks, which will not bring non-tobacco flavor and reduce cigarette flavor and fragrance. cost. However, the inventors found that the two documents still cannot be really used for industrial production. The parameters of the filter rod vary greatly, mainly affecting the suction resistance of the filter rod. The coefficient of variation of the circumference of the filter rod can be as high as 20-30%. The suction resistance is one of the important physical indicators that affect the sensory quality of cigarette smoke and the amount of tar. First, the large coefficient of variation of draw resistance leads to instability in the sensory quality of cigarettes and affects the quality of cigarettes.

Among the filter rods made of cellulose acetate and flakes or cellulose acetate and filamentary stems, they are filter rods made from tobacco stems or flakes. The prepared filter rods have large variability in resistance to draw, and the resistance to draw in batch production is low. The target value of the filter rod is ±1500Pa, and the target value of the filter rod is ±3000Pa, and the coefficient of variation reaches 10-30%. Although it is compounded with cellulose acetate, the coefficient of variation still exceeds the range of production requirements, which seriously affects the stability of the resistance of the filter rod, thereby affecting the smoke. Flavor stability.

Contents of the invention

The inventor has been researching and looking for a filter stick, which can not only make full use of the existing discarded tobacco materials while ensuring the stability of cigarette smoking, but also be really beneficial to industrial production, and make the filter stick have The coefficient of variation of the resistance of suction and the coefficient of variation of the circumference are low, and the stability of the coefficient of variation of the resistance of suction can be improved.

The inventor finds a kind of filter rod that can realize the above-mentioned requirements through repeated research and screening.

The cigarette composite filter stick of the present invention is made by compounding a mixed filter stick composed of tobacco stem fiber, expanded stem shreds, stem slices, low-grade tobacco shreds and thin slices, and a cellulose acetate filter stick; the tobacco stem in the mixed filter stick The fibers account for 10-40% by weight, the expanded cut stems account for 5-30% by weight, the stem slices account for 5-30% by weight, the shredded tobacco of low-grade tobacco leaves accounts for 20-60% by weight, and the thin slices account for 5-30% by weight.

The particularly preferred solution of the present invention is: the weight percentage of each component in the mixed filter rod is that tobacco stem fibers account for 10-35%, expanded stems account for 15-20%, and stem slices account for 15-30%. The shredded tobacco of secondary tobacco leaves accounts for 20-30%, and the thin sheet accounts for 10-20%.

The size range of the raw materials used above is: tobacco stem fiber length is 3-30mm, expanded cut stem length is 3.17-6.35mm, stem sheet area is 2-8mm ² , low grade tobacco shredded tobacco length is 1.0-7.5mm, sheet length is 1.0-15mm.

The preparation method of the cigarette composite filter rod of the present invention comprises mixing the tobacco stem fiber, expanded cut stem, stem sheet, low-grade tobacco shredded tobacco leaf and thin slice evenly, balancing the water content to 8-16%, and rolling it into cigarettes with a cigarette rolling machine. strips, and then cut into filter rods, and then compound the obtained filter rods with cellulose acetate filter rods to obtain composite cigarette filter rods.

The invention provides a composite cigarette filter rod and a preparation method thereof. The coefficient of variation of the resistance of suction and the coefficient of variation of the circumference of the filter rod prepared by the invention are low, and the stability of the coefficient of variation of the resistance of suction can be improved. In addition, high-quality binary or ternary cigarette filter rods can be produced by compounding the filter rods with cellulose acetate. The variation of suction resistance and the coefficient of circumferential variation of the composite filter rods of the present invention can be as low as about 5%.

The expanded shredded stems are shredded tobacco stems that have undergone moisture regaining treatment and then expanded. Compared with shredded cut stems that have not been expanded, the volume of the expanded cut stems is increased.

The low-grade tobacco leaves mentioned above refer to tobacco leaves that cannot be used in the production of cigarette formulas. The tobacco leaves generally have higher nicotine, thicker leaves or poorer color and combustibility of the tobacco leaves.

The present invention is also particularly preferred that the tobacco stem fiber accounts for 30% by weight, the expanded cut stem accounts for 20% by weight, and the stem sheet accounts for 20% by weight in a filter rod composed of tobacco stem fibers, expanded cut stems, stem slices, low-grade tobacco shreds and sheets. The shredded tobacco of low-grade tobacco leaves accounts for 20% by weight, and the thin sheet accounts for 10% by weight.

The size scope of the further preferred raw material of the present invention is:

The length of the tobacco stem fiber is 3-30mm, and the diameter of the tobacco stem fiber or fiber bundle is 0.01-0.3mm.

The length of the expanded cut stem is 3.17-6.35mm, and the width is 0.14-0.2mm.

The stalks are flakes with an area of 2-8mm ² and a thickness of 0.11-0.19mm.

The cut tobacco of the low grade tobacco leaves has a width of 0.3-0.5mm and a length of 1.0-7.5mm.

The width of the flakes is 0.3-0.5 mm; the length is 1.0-15 mm.

Since tobacco stem fibers, expanded cut stems, flakes, and cut tobacco leaves have certain lengths, the inventors make full use of and control their lengths, control their proportions and corresponding filling values, and increase the synergistic effect of several of their components. On the premise of maximizing the filling value, the hardness of the filter tip is strengthened, thereby increasing the stability of the circumference and reducing the suction resistance of the filter rod. Therefore, the present invention makes full use of the characteristics of tobacco stem fiber, shredded tobacco and thin sheet itself, which are longer after being shredded, and cut stems, stem slices, etc. are different in length and size due to various materials, and they are mixed in proportion to form the filter rod of the present invention The raw material structure makes the cigarette filter rods prepared finally achieve increased draw resistance and circumferential stability, and reduced variability. And it is low in cost and environment-friendly; it can be processed by using ordinary cigarette rolling machines, and does not require additional equipment and has a good effect.

The present invention proposes for the first time that a filter rod is prepared by mixing the tobacco stem fiber, shredded stem, thin slice, and low-grade tobacco leaf and shredded tobacco in proportion, and compounding the obtained filter rod with cellulose acetate to obtain a composite filter rod. Compared with the filter sticks prepared by using stems or flakes and cellulose acetate alone in the prior art, the filter sticks prepared by the present invention are not only easy to roll, but also unexpectedly reduce the absorption rate compared with the existing cellulose acetate composite filter sticks. Resistance variation coefficient and circumference coefficient of variation, and improve the stability of suction resistance variation coefficient. In addition, through the present invention, it is possible to turn waste into wealth and achieve the purpose of protecting the environment.

detailed description

The present invention will be further described below through specific examples, but the present invention is not limited.

Example 1

Mix 10% of tobacco stem fiber, 15% of expanded cut stem, 15% of stem sheet, 30% of shredded tobacco of low-grade tobacco leaves, and 30% of thin sheet according to the weight ratio, and the length of the tobacco stem fiber is 3-30mm, and the tobacco stem fiber or fiber Bundle diameter: 0.01-0.3mm; the length of the expanded cut stem is ^3.17-6.35mm , and the width is 0.14-0.2mm; The width of shredded tobacco leaves is 0.3-0.5mm; the length is 1.0-7.5mm; the width of the sheet is 0.3-0.5mm; the length is 1.0-15mm; (the same as in the following examples). Balance the moisture content to 12±0.5%, roll these tobacco stem fibers, expanded stems, shredded tobacco and thin slices into tobacco rods with ordinary cigarette rolling machines, cut them into filter rods of a certain length according to needs, and then make the filter rods Combined with ordinary cellulose acetate filter rods to make binary or ternary filter rods, the filter rods are tested by Borgwatt comprehensive test bench, the coefficient of variation of suction resistance is 8.6%, and the coefficient of variation of circumference is 8.5%, which meets the national standard of filter rods.

Example 2

Mix 30% of the tobacco stem fiber, 20% of the expanded stem, 20% of the stem piece, 20% of the shredded tobacco of the low-grade tobacco leaf, and 10% of the thin sheet according to the weight ratio, and balance the moisture to 12±0.5%. Tobacco stem fibers, expanded stems, shredded tobacco and thin slices are rolled into tobacco rods, cut into filter rods of a certain length according to needs, and then compounded with ordinary cellulose acetate filter rods to make binary or ternary filters Rod, the filter rod is tested by Borgwatt comprehensive test bench, the coefficient of variation of suction resistance is 4.6%, and the coefficient of variation of circumference is 6.3%, which meets the national standard for filter rods.

Example 3

Mix 30% of the tobacco stem fiber, 15% of the expanded stem, 15% of the stem piece, 20% of the shredded tobacco of the low-grade tobacco leaf, and 20% of the thin sheet according to the weight ratio, and balance the moisture to 12±0.5%. Tobacco stem fibers, expanded stems, shredded tobacco and thin slices are rolled into tobacco rods, cut into filter rods of a certain length according to needs, and then compounded with ordinary cellulose acetate filter rods to make binary or ternary filters Rod, the coefficient of variation of suction resistance of the filter rod is 5.6% and the coefficient of variation of circumference is 5.3% by Borgwatt comprehensive test bench, which meets the national standard for filter rods.

Example 4

Mix 30% of the tobacco stem fiber, 20% of the expanded stem, 30% of the stem piece, 20% of the shredded tobacco of the low-grade tobacco leaf, and 10% of the thin sheet according to the weight ratio, and balance the moisture to 12±0.5%. Tobacco stem fibers, expanded stems, shredded tobacco and thin slices are connected into tobacco strips, cut into filter rods of a certain length according to needs, and then the filter rods are combined with ordinary cellulose acetate filter rods to form binary or ternary filters. Rod, the filter rod is tested by Borgwatt comprehensive test bench, the coefficient of variation of suction resistance is 6.4%, and the coefficient of variation of circumference is 5.8%, which meets the national standard for filter rods.

Example 5

Mix 40% tobacco stem fiber, 5% expanded cut stem, 5% stem sheet, 20% shredded tobacco of low-grade tobacco leaf, and 30% thin sheet according to weight ratio, and balance the moisture to 12±0.5%. Tobacco stem fibers, expanded stems, shredded tobacco and thin slices are rolled into tobacco rods, cut into filter rods of a certain length according to needs, and then compounded with ordinary cellulose acetate filter rods to make binary or ternary The filter rod is tested by Borgwatt comprehensive test bench, the coefficient of variation of suction resistance is 15.4%, and the coefficient of variation of circumference is 4.9%, which meets the national standard for filter rods.

Example 6

Mix 5% of tobacco stem fiber, 5% of expanded cut stem, 5% of stem sheet, 60% of shredded tobacco of low-grade tobacco leaves, and 25% of shredded flakes in a weight ratio, and balance the moisture to 12±0.5%. These tobacco stem fibers, expanded stems, shredded tobacco and thin slices are rolled into tobacco rods, cut into filter rods of a certain length according to needs, and then compounded with ordinary cellulose acetate filter rods to make binary or triple filter rods. For element filter rods, the filter rods are detected by Borgwatt comprehensive test bench, the coefficient of variation of suction resistance is 12.4%, and the coefficient of variation of circumference is 8.6%.

Comparative example 1

Balance the moisture content of the tobacco stem fibers to 12±0.5%, roll these stem fibers into tobacco rods with an ordinary cigarette rolling machine, cut them into filter sticks of a certain length according to needs, and then combine the filter sticks with ordinary acetate fiber The filter rods are combined to make binary or ternary filter rods, and the filter rods are tested by Borgwatt comprehensive test bench. The coefficient of variation of suction resistance is 26.4%, and the coefficient of variation of circumference is 6.2%.

Comparative example 2

The shredded tobacco of low-grade tobacco leaves should be balanced to a moisture content of 12±0.5%, and the shredded tobacco of these low-grade tobacco leaves should be rolled into tobacco rods with an ordinary cigarette rolling machine, and cut into filter rods of a certain length according to needs, and then the filter rods made Composite with ordinary cellulose acetate filter rods to make binary or ternary filter rods, the filter rods are tested by Borgwatt comprehensive test bench, the coefficient of variation of suction resistance is 30.4%, and the coefficient of variation of circumference is 7.2%.

Comparative example 3

Balance the moisture content of the stalks to 12±0.5%, roll these stalk fibers into tobacco rods with an ordinary cigarette rolling machine, cut them into filter sticks of a certain length according to needs, and then filter the made filter sticks with ordinary cellulose acetate The rods are compounded to make binary or ternary filter rods, and the filter rods are tested by Borgwatt comprehensive test bench. The coefficient of variation of suction resistance is 25.4%, and the coefficient of variation of circumference is 10.2%.

Comparative example 4

Put the tobacco stems into the microwave expansion equipment, microwave expansion;. The expanded tobacco stems are subjected to conventional moisture regain treatment, and the moisture content is controlled to 28%, and then cut into 0.9mm-1.2mm wide filamentary stems on a shredder , using a cigarette rolling machine to make a rod; and then make a binary filter rod with a cellulose acetate filter through a nozzle rod compounding machine, and use a Borgwatt comprehensive test bench to test the filter rod. 9.2%.

Comparative Example 5

Cut the tobacco flakes into 2-30mm long, 1mm wide, and 0.1-0.3mm thick thin slices with a shredder, and roll them into rods with a cigarette rolling machine; and then prepare binary filters with cellulose acetate filters through a mouth rod compounding machine For the mouth rod, the filter rod is detected by Borgwatt comprehensive test bench, the coefficient of variation of suction resistance is 29.4%, and the coefficient of variation of circumference is 8.7%.

According to the data of embodiment, it can be seen that:

It can be seen from Examples 2, 3, and 4 that when the proportions of tobacco stem fiber, shredded stem, stem sheet, low-grade tobacco leaf shreds, and thin slices are all maintained at about 20%, the coefficient of variation of the resistance to draw is small and the effect is the best. In Example 6, the proportion of low-grade tobacco leaves and shredded tobacco is relatively large, and the coefficient of variation of draw resistance is slightly larger, but still better than that of Comparative Examples 1-5.

Can find out from the contrast of embodiment and comparative example:

A filter rod made of a single material combined with cellulose acetate has a large coefficient of variation of the filter rod parameters, that is to say, the parameters are unstable, and industrial production and application cannot be carried out. However, the combination of the mixed filter rod and cellulose acetate of the present invention can improve the stability of filter rod parameters.

Claims (10)

1. a composite filter rod for cigarettes, characterized in that, it is made of composite filter rod and cellulose acetate filter rod composed of tobacco stem fiber, expanded stem shreds, stem sheet, low-grade tobacco shredded tobacco and thin sheet; The percentage by weight of each component in the filter rod is 10-40% for tobacco stem fiber, 5-30% for expanded cut stem, 5-30% for stem sheet, 20-60% for shredded tobacco of low-grade tobacco leaves, and 20-60% for sheet tobacco. 5-30%. 2. The composite filter stick according to claim 1, characterized in that, the weight percentage of each component in the mixed filter stick is that the tobacco stem fiber accounts for 10-35%, the expanded cut stem accounts for 15-20%, Stems account for 15-30%, cut tobacco of low-grade tobacco leaves accounts for 20-30%, and thin slices account for 10-20%. 3. The composite filter stick according to claim 1, characterized in that, the weight percentage of each component in the mixed filter stick is that the tobacco stem fiber accounts for 30%, the expanded cut stem accounts for 20%, and the stem slice accounts for 20%. %, cut tobacco of low-grade tobacco leaves accounts for 20%, and flakes account for 10%. 4. The composite filter rod according to claim 1, 2 or 3, characterized in that the tobacco stem fiber length is 3-30mm, the expanded cut stem length is 3.17-6.35mm, and the stem slice area is 2-8mm ² , which is as low as 3-30mm. The length of shredded tobacco of secondary tobacco leaves is 1.0-7.5 mm, and the length of thin slices is 1.0-15 mm. 5. The composite filter rod according to claim 1, characterized in that the tobacco stem fiber has a length of 3-30 mm and a diameter of 0.01-0.1 mm. 6. The composite filter rod according to claim 1, characterized in that the length of the expanded cut stem is 3.17-6.35mm, and the width is 0.14-0.2mm. 7. The composite filter rod according to claim 1, characterized in that the area of the stem is 2-8mm ² and the thickness is 0.11-0.19mm. 8 . The composite filter rod according to claim 1 , characterized in that the cut tobacco leaves of low grade tobacco have a width of 0.3-0.5 mm and a length of 1.0-7.5 mm. 9. The composite filter rod according to claim 1, characterized in that, the width of the sheet is 0.3-0.5mm; the length is 1.0-15mm. 10. The method for preparing the composite cigarette filter rod according to any one of claims 1-9, after mixing the tobacco stem fibers, expanded stem cuts, stem slices, low-grade tobacco leaf shreds and thin slices evenly, the moisture content is balanced to 8-16% , use a cigarette rolling machine to roll it into a cigarette rod, then cut it into a filter rod, and then compound the prepared filter rod with an acetate filter rod to obtain a composite cigarette filter rod.