CN114983017B - Inner core filled outer hollow filter stick and processing method thereof - Google Patents

Inner core filled outer hollow filter stick and processing method thereof Download PDF

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Publication number
CN114983017B
CN114983017B CN202210568132.9A CN202210568132A CN114983017B CN 114983017 B CN114983017 B CN 114983017B CN 202210568132 A CN202210568132 A CN 202210568132A CN 114983017 B CN114983017 B CN 114983017B
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China
Prior art keywords
paper
horn mouth
cylinder
forming
molding
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Application number
CN202210568132.9A
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Chinese (zh)
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CN114983017A (en
Inventor
岳保山
余振华
沈艳飞
张莹
王涛
王浩
谢姣
王旭
丁卫
郑晗
余婷婷
李利伟
余耀
桂永发
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China Tobacco Yunnan Industrial Co Ltd
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China Tobacco Yunnan Industrial Co Ltd
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Priority to CN202210568132.9A priority Critical patent/CN114983017B/en
Publication of CN114983017A publication Critical patent/CN114983017A/en
Priority to EP23772391.1A priority patent/EP4305975A1/en
Priority to PCT/CN2023/080716 priority patent/WO2023226522A1/en
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Publication of CN114983017B publication Critical patent/CN114983017B/en
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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0229—Filter rod forming processes
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/025—Final operations, i.e. after the filter rod forming process
    • A24D3/0254—Cutting means
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0275—Manufacture of tobacco smoke filters for filters with special features
    • A24D3/0287—Manufacture of tobacco smoke filters for filters with special features for composite filters
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0275—Manufacture of tobacco smoke filters for filters with special features
    • A24D3/0291—Manufacture of tobacco smoke filters for filters with special features for hollow tipped filters, e.g. recess filters
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/061—Use of materials for tobacco smoke filters containing additives entrapped within capsules, sponge-like material or the like, for further release upon smoking
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
    • A24D3/10—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent of cellulose or cellulose derivatives

Abstract

The invention discloses an outer hollow filter rod filled with an inner core, wherein the appearance of the filter rod is cylindrical, the outer layer of the filter rod is formed by rolling outer forming paper (W) into a cylinder (W1), and the inner layer of the filter rod is formed by folding inner forming paper (N) into a cylinder with an equilateral triangle (N1) along the axial cross section of the cylinder (W1); and three vertexes of the triangle (N1) are on the inner wall surface of the cylinder (W1); wherein the inner forming paper (N) is internally filled with inner tows (S2). The invention also discloses a forming method of the triangular filter stick filled with the inner core.

Description

Inner core filled outer hollow filter stick and processing method thereof
Technical Field
The invention belongs to the technical field of tobacco, and particularly relates to an inner core filled outer hollow filter rod and a processing method thereof.
Background
With the increase of market competition in the tobacco industry, single-function tobacco materials have been difficult to meet the demands of cigarette brand development and product characterization. Along with new technology, new technology and application of new materials in cigarette products, the cigarette materials have been developed from single functions to multiple functions and diversification directions. With the increasing competition of the cigarette market, the cigarette products with novel appearance and special functions are favored by consumers, the filter sticks are taken as important constituent parts of the cigarettes, and the hollow filter sticks are increasingly applied to the cigarettes due to the special functions.
The flavoring effect of the cigarette is to improve the physical and chemical properties of the cigarette, so that the consumer obtains the feeling of specific taste, smell and touch, and the acceptability of the cigarette is improved. There are also various methods of flavoring, including direct addition to tobacco shreds, and other adjuvants added to cigarettes, such as filters, cigarette papers and packaging materials. The microcapsule is placed in the joint of the filter tip and the cigarette, or can be intensively placed in the middle section of the filter tip to form the filter tip, and plays different roles in smoking, and the spice substance keeps the original flavor, and can effectively set off the aroma of the cigarette product, cover miscellaneous gases and improve the smoking flavor.
The hollow filter rods disclosed in the patents CN210076559U, CN210382609U and CN105342005A have multiple layers and each layer is filled with tows. However, the hollow filter rods of the above patent require a pressure-reducing channel or groove formed by folding a forming paper, and the shape of the pressure-reducing channel or groove is complex, which is difficult to mass-produce.
The present invention has been made to solve the above problems.
Disclosure of Invention
The invention discloses an outer hollow filter rod filled with an inner core and a processing method thereof.
The technical scheme of the invention is as follows:
the invention discloses an outer hollow filter rod filled with an inner core, which is cylindrical in appearance, and comprises an outer layer made of outer forming paper W rolled into a cylinder W1, and an inner layer made of inner forming paper N folded into a cylinder with an equilateral triangle N1 along the axial cross section of the cylinder W1; and three vertexes of the triangle N1 are on the inner wall surface of the cylinder W1; wherein the inner forming paper N is internally filled with an inner tow S2.
Preferably, the basis weight of the inner forming paper N is 30-40g/m 2 。
Preferably, the basis weight of the outer forming paper W is 90-110g/m 2 。
Preferably, the regular triangle N1 is folded for two layers of the second forming paper 2.
Preferably, the inner tow S2 has a single denier and a total denier of 3.0 to 12.0Y,15000 to 35000D; typically 3.9Y/31000D, 3.0Y/32000D, 3.0Y/35000D, 3.8Y/34000D, can be selected according to the design requirements of the filter stick. The general conventional branch filter stick is 3.0-3.9Y,31000-35000D, the medium branch filter stick is 3.8-6.7Y,22000-34000D, and the fine branch filter stick is 6.0-12.0Y,15000-16000D.
Preferably, the inner and outer layer forming papers may be flavored separately or simultaneously.
The second aspect of the invention discloses a molding method of the inner core filled outer hollow filter stick, which uses a filter stick one-step molding system;
the filter rod one-time forming system comprises the following components: a forming horn mouth C, an outer forming paper conveyor 3W, an inner forming paper conveyor 3N, and an inner tow conveyor 52; the molding horn mouth C comprises an outer molding horn mouth 11 and an inner molding horn mouth 21, and the inner molding horn mouth 21 is sleeved in the outer molding horn mouth 11; the outer shaping horn mouth 11 is a cylinder with gradually smaller radius; the inner horn mouth 21 has two layers, the outer layer 211 is in a cylinder shape which gradually transits from a circular shape to a regular triangle, the inner layer 212 is in a triangular prism shape with a larger area at one end and a smaller area at the other end;
the forming method of the outer hollow filter rod filled with the inner core comprises the following steps: the outer shaping paper conveying belt 3W conveys the outer shaping paper W to the inlet of the shaping horn mouth C, is baked by the outer shaping paper baking device 31, enters the cylinder of the outer shaping horn mouth 11, is shaped into a cylinder WI shape, is glued by the outer lap adhesive device 33, and then comes out from the outlet of the outer shaping horn mouth 11; meanwhile, the inner molding paper conveying belt 3N conveys the inner molding paper N to the inlet of the molding horn mouth C, is baked by the inner molding paper baking device 32, enters between the outer layer 211 and the inner layer 212 of the inner molding horn mouth 21, is gradually molded into a cylinder shape of a regular triangle N1, is glued by the inner lap adhesive device 33, and then comes out from the outlet of the inner molding horn mouth 21; the inner tow S2 conveyed from the inner tow conveyor 52 at this time is fed into the inner forming paper N; the cylinder of the regular triangle N1 is sleeved with a cylinder WI coming out of the outlet of the outer shaping horn mouth 11, and the inner shaping paper N is internally filled with inner tows S2; the molded filter stick is glued by a gluing device 35, three vertexes of a triangle N1 are glued on the inner wall surface of a cylinder W1, and the filter stick is heated by a heater 36 again, cooled by a cooler 37 for molding, cut by a cutter 38 and output by a stick separating roller 39, so that the outer hollow filter stick filled with the inner core is obtained.
The inner core filled outer hollow filter rod prepared by the invention is used as a base rod A and other filter rods B of different types such as a bead explosion filter rod, a particle filter rod, a flavoring filter rod and the like, the inner core filled outer hollow binary filter rod can be prepared by once compounding according to a certain sequence and a certain length proportion, and the base rod A and the filter rods B1 and B2 can be prepared by twice compounding according to a certain sequence and a certain length proportion. After the cigarette making machine is connected with the cigarette, the outer hollow filter rod filled with the inner core is arranged at the lip end of the cigarette.
The invention has the beneficial effects that:
1. the invention adopts the inner and outer shaping papers with different quantitative, prepares the outer hollow filter stick filled with the inner core, thereby realizing different functions; the outer layer improves the filtration permeability and the light feeling; the inner space is filled with the tow to improve the filtration efficiency. The hollow filter rod obtained by the method in the prior art cannot be filled with tows because of thermoplastic molding, and cannot be processed differently by using the conventional perfuming technology, and cannot play a role in filtering the hollow filter rod section.
2. The invention designs and prepares the shaping horn mouth by itself. The forming horn mouth comprises an outer forming horn mouth and an inner forming horn mouth, and the inner forming horn mouth is sleeved in the outer forming horn mouth; the outer shaping horn mouth is cylindrical with gradually smaller radius; the inner horn mouth is two layers, the outer layer is in a cylinder shape which gradually transits from a round shape to a regular triangle, the inner layer is in a triangular prism shape with a larger area at one end and a smaller area at the other end. The shaping horn mouth of the invention can easily shape the inner and outer shaping papers into the required shape at one time; and large-scale industrial production is easy to carry out.
3. The inner layer forming paper and the outer layer forming paper are bonded together, tows are filled in the inner layer forming paper, a cavity is formed between the outer layer forming paper and the inner layer forming paper, and the position and the mechanism of smoke ventilation of the hollow structure in the hollow filter stick are different from those of the existing hollow filter stick; the triangular filter stick filled with the inner core can better collect smoke, the smoke is softer and finer, the smooth feeling is good, the clusters are good, and the taste absorption is round and smooth and the convergence feeling is strong.
4. The inner core filled outer hollow filter stick and the inner layer filled tows are matched with the forming paper for perfuming and the tows for perfuming, so that the perfuming effect of the tows can be better exerted, the aggregation of cigarette aroma is facilitated, the aroma quality of the cigarette is improved, the aroma quantity is enhanced, and the sensory quality of the cigarette can be effectively improved.
Drawings
Fig. 1 is a schematic cross-sectional view of the vertical central axis of an inner core-filled outer hollow filter rod of the present invention.
FIG. 2 is a schematic view of a shaped horn mouth of the present invention.
FIG. 3 is a schematic view of an internally molded horn mouth of the present invention.
Fig. 4 is a schematic diagram of an inner core filled outer hollow filter rod one-time molding system of the present invention.
The reference numerals are: 11. forming a horn mouth externally; 111. a fixed point; 21. an internally molded horn mouth; 211. an outer layer; 212. an inner layer; 3W, an outer forming paper conveyor belt; 3N, inner and outer forming paper conveyor belts; 31. an outer forming paper baking device; 32. an inner forming paper baking device; 33. an inner lap adhesive device; 34. an outer lap adhesive device; 35. a bonding glue device; 36. a heater; 37. a cooler; 38. a cutter; 39. a rod separating roller; 51. an inner tow package; 52. an inner tow conveyor belt; 53. an internal additive tank; w, outer forming paper; n, inner forming paper; w1, a cylinder; n1, triangles; C. shaping a horn mouth; s2, inner tows.
Detailed Description
The present invention will be further illustrated by the following examples, but is not limited to the examples. Experimental methods, in which specific conditions are not specified in examples, are generally available commercially according to conventional conditions as well as those described in handbooks, or according to general-purpose equipment, materials, reagents, etc. used under conditions suggested by manufacturers, unless otherwise specified. The raw materials required in the following examples and comparative examples are all commercially available.
The core-filled outer hollow filter rod of the present invention shown in fig. 1 is a schematic cross-sectional view of the central axis of a vertical filter rod; the invention discloses an outer hollow filter rod filled with an inner core, which is cylindrical in appearance, and comprises an outer layer made of outer forming paper W rolled into a cylinder W1, and an inner layer made of inner forming paper N folded into a cylinder with an equilateral triangle N1 along the axial cross section of the cylinder W1; and three vertexes of the triangle N1 are on the inner wall surface of the cylinder W1; wherein the inner forming paper N is internally filled with an inner tow S2. The ration of the inner shaping paper N is 30-40g/m 2 . The basis weight of the external forming paper W is 90-110g/m 2 . The regular triangle N1 is folded for two layers of the second forming paper 2. The inner tow S2 has a single denier and a total denier of 3.0-12.0Y, 15000-35000D.
The second aspect of the invention discloses a molding method of the inner core filled outer hollow filter stick, which uses a filter stick one-step molding system;
as shown in fig. 4, the filter rod one-time molding system comprises the following components: a forming horn mouth C, an outer forming paper conveyor 3W, an inner forming paper conveyor 3N, and an inner tow conveyor 52; as shown in fig. 2, the molding horn mouth C includes an outer molding horn mouth 11 and an inner molding horn mouth 21, and the inner molding horn mouth 21 is sleeved in the outer molding horn mouth 11; the outer shaping horn mouth 11 is a cylinder with gradually smaller radius; as shown in fig. 3, the inner horn mouth 21 has two layers, the outer layer 211 has a cylindrical shape gradually transiting from a circular shape to a regular triangle, the inner layer 212 has a triangular prism shape with a larger area at one end and a smaller area at the other end;
the forming method of the triangular filter stick filled with the inner core comprises the following steps: the outer shaping paper conveying belt 3W conveys the outer shaping paper W to the inlet of the shaping horn mouth C, is baked by the outer shaping paper baking device 31, enters the cylinder of the outer shaping horn mouth 11, is shaped into a cylinder WI shape, is glued by the outer lap adhesive device 33, and then comes out from the outlet of the outer shaping horn mouth 11; meanwhile, the inner molding paper conveying belt 3N conveys the inner molding paper N to the inlet of the molding horn mouth C, is baked by the inner molding paper baking device 32, enters between the outer layer 211 and the inner layer 212 of the inner molding horn mouth 21, is gradually molded into a cylinder shape of a regular triangle N1, is glued by the inner lap adhesive device 33, and then comes out from the outlet of the inner molding horn mouth 21; the inner tow S2 conveyed from the inner tow conveyor 52 at this time is fed into the inner forming paper N; the cylinder of the regular triangle N1 is sleeved with a cylinder WI coming out of the outlet of the outer shaping horn mouth 11, and the inner shaping paper N is internally filled with inner tows S2; the formed filter stick is glued by a gluing device 35, three vertexes of a triangle N1 are glued on the inner wall surface of a cylinder W1, and the triangular filter stick filled with the inner core is obtained after the filter stick is heated by a heater 36, cooled by a cooler 37 and formed, cut by a cutter 38 and output by a stick separating roller 39.
The inner core filled outer hollow filter rod prepared by the invention is used as a base rod A and other filter rods B of different types such as a bead explosion filter rod, a particle filter rod, a flavoring filter rod and the like, the inner core filled outer hollow binary filter rod can be prepared by once compounding according to a certain sequence and a certain length proportion, and the base rod A and the filter rods B1 and B2 can be prepared by twice compounding according to a certain sequence and a certain length proportion. After the cigarette making machine is connected with the cigarette, the outer hollow filter rod filled with the inner core is arranged at the lip end of the cigarette.
Compared with the operation condition of the method in the prior art, the method provided by the invention has the advantages that the obtained cigarette result is compared with the operation condition of the method in the prior art:
production method Fragrant quality Fragrance amount Softness and fineness Feeling of smoothness Convergence feeling Sensory quality of cigarette
The method of the invention 14 16.5 5 5 4.5 91.5
Methods of the prior art 13 14.5 3.5 3.5 3 90.0
As can be seen from the comparison results, the cigarettes prepared by the filter stick prepared by the method have the advantages that the smoke is collected, the smoke is softer and finer, the smooth feeling is good, the agglomeration is good, the taste is mellow and the convergence is strong, the aroma quality and the aroma quantity are increased, and the sensory quality of the cigarettes can be effectively improved.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (1)

1. The forming method of the outer hollow filter rod filled with the inner core is characterized in that the outer hollow filter rod is cylindrical in appearance, the outer layer is formed by rolling outer forming paper (W) into a cylinder (W1), and the inner layer is a cylinder formed by folding inner forming paper (N) and is in a shape of a regular triangle (N1) along the axial cross section of the cylinder (W1); and three vertexes of the triangle (N1) are on the inner wall surface of the cylinder (W1); wherein the inner forming paper (N) is internally filled with inner tows (S2); the basis weight of the inner shaping paper (N) is 30-40g/m 2 The method comprises the steps of carrying out a first treatment on the surface of the The basis weight of the external forming paper (W) is 90-110g/m 2 The method comprises the steps of carrying out a first treatment on the surface of the The regular triangle (N1) is formed by folding two layers of second forming paper (2); the inner tow (S2) is 3.0-12.0Y, 15000-35000D;
the molding method of the outer hollow filter stick filled with the inner core uses a filter stick one-step molding system;
the filter rod one-time forming system comprises the following components: a forming horn mouth (C), an outer forming paper conveyor belt (3W), an inner forming paper conveyor belt (3N) and an inner tow conveyor belt (52); the forming horn mouth (C) comprises an outer forming horn mouth (11) and an inner horn mouth (21), and the inner horn mouth (21) is sleeved in the outer forming horn mouth (11); the outer shaping horn mouth (11) is in a cylinder shape with gradually smaller radius; the inner horn mouth (21) is two layers, the outer layer (211) is in a cylinder shape which gradually transits from a round shape to a regular triangle, the inner layer (212) is in a triangular prism shape with a larger area at one end and a smaller area at the other end;
the forming method of the outer hollow filter rod filled with the inner core comprises the following steps: the outer shaping paper conveying belt (3W) conveys the outer shaping paper (W) to the inlet of the shaping horn mouth (C), the outer shaping paper is baked by the outer shaping paper baking device (31), and then enters the cylinder of the outer shaping horn mouth (11) to be shaped into a cylinder (W1), and the outer shaping paper is glued by the outer lap adhesive device (34) and then comes out from the outlet of the outer shaping horn mouth (11); meanwhile, the inner molding paper conveyor belt (3N) conveys the inner molding paper (N) to the inlet of the molding horn mouth (C), and the inner molding paper enters between the outer layer (211) and the inner layer (212) of the inner molding horn mouth (21) after being baked by the inner molding paper baking device (32), and the inner molding paper is gradually molded into a cylindrical shape of a regular triangle (N1) and then is glued by the inner lap adhesive device (33) and then comes out from the outlet of the inner molding horn mouth (21); at this time, the inner tow (S2) conveyed from the inner tow conveyor belt (52) is fed into the inner forming paper (N); the cylinder of the regular triangle (N1) is sleeved with a cylinder (W1) coming out of the outlet of the outer shaping horn mouth (11), and the inner shaping paper (N) is internally filled with inner tows (S2); the formed filter stick is glued by a gluing device (35) and then is glued to the three vertexes of a triangle (N1) on the inner wall surface of a cylinder (W1), and is cooled and formed by a cooler (37) after being heated by a heater (36) again, and is output by a stick separating roller (39) after being cut by a cutter (38), so that the outer hollow filter stick filled with the inner core is obtained.
CN202210568132.9A 2022-05-24 2022-05-24 Inner core filled outer hollow filter stick and processing method thereof Active CN114983017B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN202210568132.9A CN114983017B (en) 2022-05-24 2022-05-24 Inner core filled outer hollow filter stick and processing method thereof
EP23772391.1A EP4305975A1 (en) 2022-05-24 2023-03-10 Filter rod having hollow outer section and filled inner core, and processing method therefor
PCT/CN2023/080716 WO2023226522A1 (en) 2022-05-24 2023-03-10 Filter rod having hollow outer section and filled inner core, and processing method therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210568132.9A CN114983017B (en) 2022-05-24 2022-05-24 Inner core filled outer hollow filter stick and processing method thereof

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Publication Number Publication Date
CN114983017A CN114983017A (en) 2022-09-02
CN114983017B true CN114983017B (en) 2023-08-22

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EP (1) EP4305975A1 (en)
CN (1) CN114983017B (en)
WO (1) WO2023226522A1 (en)

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CN114983018A (en) * 2022-05-24 2022-09-02 云南中烟工业有限责任公司 Triangular-spaced full-hollow filter stick and forming method thereof
CN114983015A (en) * 2022-05-24 2022-09-02 云南中烟工业有限责任公司 Interlayer filled hollow triangular filter rod and processing method thereof
CN114983017B (en) * 2022-05-24 2023-08-22 云南中烟工业有限责任公司 Inner core filled outer hollow filter stick and processing method thereof

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