Porous colorful composite filter stick and dyeing forming method of colorful filter stick

Abstract

The invention belongs to the technical field of cigarette materials, and relates to a filter stick, in particular to a porous colorful composite filter stick which comprises cylindrical forming paper, a porous hollow pipe filter stick and a colorful filter stick are arranged in the forming paper, the porous hollow pipe filter stick and the colorful filter stick are connected end to end, and the colorful filter stick is composed of at least two dyed tow filter strips arranged side by side. The colors of every two adjacent dyed tow filter strips are different, and the number of holes in the porous hollow pipe filter stick is consistent with the number of the colors of the dyed tow filter strips of the colorful filter stick. The invention further discloses a dyeing forming method of the colorful filter stick. The preparation process is simple, the cost is low, the end face of the prepared porous colorful composite filter stick is provided with two kinds of tows with different colors to naturally form a color transition zone, the anti-fake capacity is higher, and the appearance characteristic is more remarkable; in addition, by adding various different essences, smoke can be effectively blended, and the smoking comfort is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of cigarette materials, and relates to a filter rod, in particular to a porous multi-color composite filter rod and a dyeing and forming method of the multi-color filter rod. BACKGROUND

[0002] The filter rod is made of cigarette acetate tow or cigarette polypropylene fiber tow, and the end face thereof usually has only one color, i.e. white, and has no visual identification feature. At present, some special filter rods using hollow tubes or grooves improve the visual features of the filter rod to a certain extent, but are highly homogeneous and easy to be imitated, and have weak characteristic.

[0003] The patent CN201238601Y discloses a color pattern cigarette filter rod with anti-fake function, which has a color pattern on the end face, i.e. long strips of different color tows are made into a certain shape, spliced and combined, but the preparation method is complicated, the splicing of different shaped filter strips is difficult, and the production efficiency is low. SUMMARY

[0004] The present application aims to disclose a porous multi-color composite filter rod, prepare a multi-color filter rod, and improve the appearance feature and anti-fake ability of the filter rod.

[0005] TECHNICAL SCHEME

[0006] A porous multi-color composite filter rod comprises a cylindrical forming paper, and two sections of porous hollow tube filter rods and multi-color filter rods are arranged in the forming paper in a head-to-tail mode, wherein the multi-color filter rod is composed of no less than two parallel arranged dyed tow filter strips, the color of the adjacent two dyed tow filter strips is different, the number of the pores in the porous hollow tube filter rod is consistent with the number of the colors of the dyed tow filter strips of the multi-color filter rod, and different colors can be observed through the different pores.

[0007] The forming paper is an oil-proof forming paper or a high-transparency forming paper, and is preferably an oil-proof forming paper.

[0008] The pore diameter of the porous hollow tube filter rod is between 1.0 and 3.0 mm.

[0009] The dyed tow includes but is not limited to acetate tow, polypropylene fiber tow, polylactic acid tow, polylactic acid-PET composite tow and ES fiber tow, and is preferably acetate tow or polypropylene fiber tow.

[0010] The present application also aims to disclose a dyeing and forming method of the multi-color filter rod, which comprises the following steps:

[0011] (1) edible pigment is dissolved in a solvent to prepare a dyeing agent with a concentration of 0.1-2 wt.%, the dyeing agent is atomized and uniformly sprayed on the surface of the tow, and the tow is dyed and dried in line.

[0012] (2) The dried colored tow is separated by the same number of guide rings as the tow strands and introduced into a tongue press with a partition plate, the tongue press is divided into the same number of chambers as the tow strands by the partition plate, so that the tow is separated and poured into the smoke gun at the same time, and the tow naturally converges after entering the smoke gun, and the colors of different color contact parts naturally mix.

[0013] In a preferred embodiment of the application, the edible pigment is any one or several of the pigments in the YQ 15.1-2020 List of Substances Permitted for Use in Tobacco Materials, compounded in any proportion.

[0014] In a preferred embodiment of the application, the mass ratio of the added dyeing agent to the tow is 5-35:100, preferably 8-15:100.

[0015] In a preferred embodiment of the application, the solvent is a mixture of propylene glycol, anhydrous ethanol, glyceryl triacetate and water, with a mass ratio of 70-85:30-60:3-8:0-5.

[0016] Further, 0.1-1 wt.% of tobacco flavoring of different flavors, including but not limited to fruit flavor, floral flavor or woody flavor, can be added to the dyeing agent of different colors.

[0017] Advantages

[0018] The porous multi-color composite filter rod disclosed in the application is prepared by on-line dyeing of the tow by one-step method, introduction of the tow into the smoke gun by the tongue press, and wrapping by the forming paper, with simple preparation process, low cost, natural formation of color transition zone on the end face of the multi-color filter rod by two different colored tows, stronger anti-counterfeiting ability, and more significant appearance characteristics; in addition, the addition of various flavors can effectively harmonize the smoke and improve the smoking comfort. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 . Double-color double-hole filter rod solid and cross-sectional schematic diagram (without forming paper);

[0020] Figure 2 . Three-color three-hole filter rod solid and cross-sectional schematic diagram (without forming paper);

[0021] Figure 3 . Four-color four-hole filter rod solid and cross-sectional schematic diagram (without forming paper);

[0022] Wherein, 1, porous hollow tube filter rod, 2, multi-color filter rod. DETAILED DESCRIPTION

[0023] The application will be described in detail below with reference to the examples, so that those skilled in the art can better understand the application, but the application is not limited to the following examples.

[0024] Example 1

[0025] A double-hole double-color composite filter rod comprises a cylindrical plug wrap, and two sections of a porous hollow tube filter rod 1 and a multi-color filter rod 2 are connected end to end in the plug wrap, wherein the hollow tube filter rod 1 is double-holed, the two holes are uniformly arranged, and the hole diameter is 2.5 mm; the multi-color filter rod 2 is composed of two strands of cellulose acetate tow filter strips, one strand is red, and the other strand is yellow.

[0026] A dyeing forming method of a multi-color filter rod comprises:

[0027] (1) edible pigments are dissolved in a solvent to prepare a dyeing agent with a concentration of 0.1-2 wt.%, the dyeing agent is uniformly sprayed onto the surface of the tow after atomization, and the tow is dyed in-line and dried; wherein the pigments are red or yellow, 0.1-1 wt.% lemon flavor is added to the yellow dyeing agent, and 0.1-1 wt.% strawberry flavor is added to the red dyeing agent;

[0028] (2) the dried dyed tow is separated by a tow guide ring with the same number of strands as the tow and introduced into a tongue depressor with a partition plate, the tongue depressor is divided by the partition plate into chambers with the same number of strands as the tow, so that the tow is separated but simultaneously poured into a smoke gun, and the tow naturally converges after entering the smoke gun, and the colors of the contact parts of different colors naturally mix.

[0029] Example 2

[0030] A triple-hole triple-color composite filter rod comprises a cylindrical plug wrap, and two sections of a porous hollow tube filter rod 1 and a multi-color filter rod 2 are connected end to end in the plug wrap, wherein the hollow tube filter rod 1 is triple-holed, the three holes are uniformly arranged, and the hole diameter is 1.8 mm; the multi-color filter rod 2 is composed of two strands of cellulose acetate tow and one strand of polylactic acid tow filter strips, one strand of the cellulose acetate tow filter strips is blue, the other strand of the cellulose acetate tow is dyed green, and the polylactic acid tow filter strips are yellow.

[0031] A dyeing forming method of a multi-color filter rod comprises:

[0032] (1) edible pigments are dissolved in a solvent to prepare a dyeing agent with a concentration of 0.1-2 wt.%, the dyeing agent is uniformly sprayed onto the surface of the tow after atomization, and the tow is dyed in-line and dried; wherein the pigments are blue, green or yellow, 0.1-1 wt.% mint flavor is added to the blue dyeing agent, 0.1-1 wt.% lemon flavor is added to the yellow dyeing agent, and 0.1-1 wt.% apple flavor is added to the green dyeing agent;

[0033] (2) the dried dyed tow is separated by a tow guide ring with the same number of strands as the tow and introduced into a tongue depressor with a partition plate, the tongue depressor is divided by the partition plate into chambers with the same number of strands as the tow, so that the tow is separated but simultaneously poured into a smoke gun, and the tow naturally converges after entering the smoke gun, and the colors of the contact parts of different colors naturally mix.

[0034] Example 3

[0035] The four-hole, four-color composite filter rod includes a cylindrical forming paper, in which two sections of porous hollow tube filter rods 1 and colorful filter rods 2 are connected end to end. The hollow tube filter rod 1 has four holes, which are evenly arranged and have a pore diameter of 1.5 mm. The colorful filter rod 2 is composed of four strands of polypropylene fiber tow filter strips, two of which are blue and non-adjacent, and the other two are yellow and non-adjacent.

[0036] The dyeing and molding method of a colorful filter rod comprises:

[0037] (1) Dissolving food coloring in a solvent to prepare a dye with a concentration of 0.1 to 2 wt.%, spraying the dye evenly onto the surface of a polypropylene fiber tow after atomization, dyeing online, and drying; wherein the coloring is blue or yellow, 0.1 to 1 wt.% of mint flavor is added to the blue dye, and 0.1 to 1 wt.% of banana flavor is added to the yellow dye;

[0038] (2) The dried dyed silk bundles are separated by a wire guide ring with the same number of strands as the silk bundles and introduced into a tongue with a partition plate. The tongue is divided into chambers with the same number of strands as the silk bundles by the partition plate so that the silk bundles can be separated but poured into the smoke gun at the same time. After entering the smoke gun, the silk bundles naturally converge and the colors of the contact parts of different colors are naturally mixed.

[0039] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the description of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A porous and colorful composite filter rod, comprising a cylindrical wrapping paper, wherein the wrapping paper is provided with two sections of porous hollow tube filter rods (1) and colorful filter rods (2) connected end to end, characterized in that: The multi-colored filter rod (2) is composed of no less than two strands of dyed filament filter strips arranged in parallel, and the colors of the two adjacent strands of dyed filament filter strips are different. The number of holes in the porous hollow tube filter rod (1) is consistent with the number of colors of the dyed filament filter strips of the multi-colored filter rod (2), and different colors can be observed through different holes.

2. The porous colorful composite filter rod according to claim 1, characterized in that: The wrapping paper is oil-proof wrapping paper or high-transparency wrapping paper, preferably oil-proof wrapping paper.

3. The porous colorful composite filter rod according to claim 1, characterized in that: The pore diameter of the porous empty tube filter stick (1) is between 1.0 and 3.0 mm.

4. The porous colorful composite filter rod according to claim 1, characterized in that: The dyed yarn tow is any one of cellulose acetate yarn tow, polypropylene fiber yarn tow, polylactic acid yarn tow, polylactic acid-PET composite yarn tow, and ES fiber yarn tow; preferably cellulose acetate yarn tow or polypropylene fiber yarn tow.

5. A dyeing and molding method for a multi-colored filter rod (2), characterized in that: The steps include: (1) The food coloring is dissolved in a solvent to prepare a dye with a concentration of 0.1 to 2 wt.%, and the dye is evenly sprayed onto the surface of the tow after atomization, and then dyed online and dried; (2) The dried dyed silk bundles are separated by a wire guide ring with the same number of strands as the silk bundles and introduced into a tongue with a partition plate. The tongue is divided into chambers with the same number of strands as the silk bundles by the partition plate so that the silk bundles can be separated and poured into the smoke gun at the same time. After entering the smoke gun, the silk bundles naturally converge and the colors of the contact parts of different colors are naturally mixed.

6. The dyeing and molding method of the multi-colored filter rod (2) according to claim 5, characterized in that: The edible pigment is any one or more of the pigments listed in the "YQ15.1-2020 List of Substances Permitted for Use in Tobacco Materials" in any proportion.

7. The dyeing and molding method of the multi-colored filter rod (2) according to claim 5, characterized in that: The mass ratio of the added dye to the yarn bundle is 5~35:

100.

8. The dyeing and molding method of the multi-colored filter rod (2) according to claim 5, characterized in that: The mass ratio of dye to silk tow is 8~15:

100.

9. The dyeing and molding method of the multi-colored filter rod (2) according to claim 5, characterized in that: The solvent is a mixture of propylene glycol, anhydrous ethanol, triacetin and water, and the mass ratio thereof is 70-85:30-60:3-8:0-5.

10. The dyeing and molding method of the multicolored filter rod (2) according to any one of claims 5 to 9, characterized in that: 0.1-1 wt.% of tobacco flavor is also added to the dye.

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