Triangularly spaced full hollow filter rod and method of forming same

Abstract

The application discloses a kind of triangle interval full hollow filter rod, the appearance of the kind of triangle interval full hollow filter rod is cylindrical, and its composition is that outer layer is outer formed paper (W) is rolled into cylinder (W1), and inner layer is that inner formed paper (N) is folded into the cylinder (W1) axial cross section is equilateral triangle (N1) of cylinder;And three vertices of triangle (N1) are on the inner wall surface of cylinder (W1);Wherein, between outer formed paper (W) and inner formed paper (N), and inside inner formed paper (N) are not filled with tow.The application also discloses the forming method of triangle interval full hollow filter rod.

Description

Technical Field

[0001] This invention belongs to the field of tobacco technology, specifically relating to a triangularly spaced hollow filter rod and its processing method. Background Technology

[0002] With increasing market competition in the tobacco industry, single-function tobacco materials can no longer meet the needs of cigarette brand development and product specialization. Along with the application of new technologies, processes, and materials in cigarette products, tobacco materials have evolved from single-function to multi-functional and diversified. As an important component of cigarettes, filter rods are increasingly favored by consumers for their novel appearance and special functions, leading to the growing use of hollow filter rods in cigarettes due to their unique features.

[0003] The purpose of adding flavoring to cigarettes is to improve their physicochemical properties, providing consumers with specific taste, smell, and tactile sensations, and enhancing their acceptability. There are many methods of flavoring, including adding it directly to the tobacco or to other cigarette accessories such as filters, cigarette paper, and packaging materials. Microcapsules in tobacco products can be placed at the junction of the filter and the cigarette, or concentrated in the middle of the filter to form the filter itself. They play different roles during inhalation, while the flavoring substances retain their original flavor, effectively enhancing the aroma of the cigarette product, masking off-flavors, and improving the overall taste.

[0004] The hollow filter rods disclosed in patents CN210076559U, CN210382609U, and CN105342005A have multiple layers, each filled with filament bundles. However, the hollow filter rods in the above patents require pressure-reducing channels or grooves made of folded forming paper. These pressure-reducing channels or grooves have complex shapes, making them difficult to mass-produce industrially.

[0005] The present invention is proposed to solve the above problems. Summary of the Invention

[0006] This invention discloses a triangularly spaced, fully hollow filter rod and its molding method. The triangularly spaced, fully hollow filter rod of this invention can be placed at the smoking end of a cigarette, allowing direct observation of the hollow structure. It primarily serves to alter the appearance of the filter rod, creating a refreshing visual impact. Since no fiber is added, it does not provide any filtering function.

[0007] The technical solution of the present invention is as follows:

[0008] The first aspect of this invention discloses a triangularly spaced hollow filter rod. The triangular filter rod is cylindrical in appearance and is composed of an outer layer of outer forming paper W rolled into a cylinder W1, and an inner layer of inner forming paper N folded into a cylinder with an equilateral triangle N1 in cross-section along the axial direction of the cylinder W1. The three vertices of the triangle N1 are on the inner wall surface of the cylinder W1. The outer forming paper W and the inner forming paper N are not filled with filaments, nor are the inner forming paper N filled with filaments.

[0009] Preferably, the basis weight of the outer forming paper W is 30-40 g / m². 2 .

[0010] Preferably, the basis weight of the internal forming paper N is 90-110 g / m³. 2 .

[0011] Preferably, triangle N1 is formed by folding two layers of inner forming paper N.

[0012] Preferably, the inner and outer layers of the forming paper can be scented separately or simultaneously.

[0013] The second aspect of this invention discloses a method for forming the triangularly spaced hollow filter rod, using a one-time filter rod forming system;

[0014] The filter rod one-time forming system includes the following components: forming horn nozzle C, outer forming paper conveyor belt 3W, and inner forming paper conveyor belt 3N; the forming horn nozzle C includes an outer forming horn nozzle 11 and an inner forming horn nozzle 21, with the inner forming horn nozzle 21 fitted inside the outer forming horn nozzle 11; the outer forming horn nozzle 11 is a cylindrical shape with a gradually decreasing radius; the inner forming horn nozzle 21 has two layers, with the outer layer 211 being a cylindrical shape that gradually transitions from a circle to an equilateral triangle, and the inner layer 212 being a triangular prism with an equilateral triangle at one end and an equilateral triangle at the other end with a smaller area;

[0015] The forming method of the triangular-spaced hollow filter includes the following steps: the outer forming paper conveyor belt 3W conveys the outer forming paper W to the inlet of the forming flared nozzle C, where it is baked by the outer forming paper baking device 31 and then enters the cylinder of the outer forming flared nozzle 11 to be formed into a cylindrical shape W1. After being glued by the outer sealing adhesive device 34, it exits from the outlet of the outer forming flared nozzle 11. At the same time, the inner forming paper conveyor belt 3N conveys the inner forming paper N to the inlet of the forming flared nozzle C, where it is baked by the inner forming paper baking device 32 and then enters the outer layer 211 and inner layer of the inner forming flared nozzle 21. Between 212, after gradually forming a cylindrical shape of equilateral triangle N1, it is glued by the inner sealing adhesive device 33 and comes out from the outlet of the inner forming horn nozzle 21; at this time, the cylindrical shape of equilateral triangle N1 is nested with the cylindrical cylinder W1 coming out from the outlet of the outer forming horn nozzle 11. After the adhesive device 35 applies adhesive, it glues the three vertices of triangle N1 to the inner wall surface of cylindrical cylinder W1. After being heated again by heater 36 and cooled by cooler 37, it is cut by cutter 38 and output by dividing roller 39, thus obtaining the triangularly spaced hollow filter rod.

[0016] The triangularly spaced hollow filter rods prepared according to this invention are used as base rod A and combined with other filter rods B of different types, such as pod filter rods, granule filter rods, and flavored filter rods, in a certain order and length ratio to prepare an inner-core-filled outer hollow binary filter rod. Base rod A is then combined with filter rods B1 and B2 in a certain order and length ratio to prepare an inner-core-filled outer hollow ternary filter rod. After the filter rods are attached to the cigarette rolling machine and the cigarette, the inner-core-filled outer hollow filter rod is placed at the lip end of the cigarette.

[0017] The beneficial effects of this invention are:

[0018] 1. This invention uses high-basis-weight inner and outer forming paper to prepare a paper-based, fully hollow triangular filter rod. The resulting cavity, when placed in the middle section of the composite filter rod, can be used to add fragrance, such as with popping beads; when placed near the lip end of the composite filter rod, it can present a unique appearance. The special hollow structure does not require filling with filament bundles. Compared to current hollow filter rods, which do not require filament bundle melting mold forming, this effectively reduces the use of filament bundles and lowers the cost of the filter rod.

[0019] 2. This invention independently designed and manufactured a shaped flared nozzle. The shaped flared nozzle includes an outer shaped flared nozzle and an inner shaped flared nozzle, with the inner shaped flared nozzle nested inside the outer shaped flared nozzle. The outer shaped flared nozzle is a cylindrical shape with a gradually decreasing radius. The inner shaped flared nozzle has two layers: the outer layer is a cylindrical shape that gradually transitions from a circle to an equilateral triangle, and the inner layer is a triangular prism with one end being an equilateral triangle with a larger area and the other end being an equilateral triangle with a smaller area. The shaped flared nozzle of this invention easily shapes the inner and outer forming papers into the desired shape.

[0020] 3. In this invention, the inner and outer layers of molded paper are bonded together, and the connecting area between the outer and inner layers forms a cavity. This differs from the current hollow structure of hollow filter rods in terms of the position and mechanism of smoke flow. It can better gather the smoke, resulting in a softer, more delicate smoke with a smoother, more cohesive feel, and a more rounded and astringent flavor. Compared to spiral-formed paper hollow filter rods, the special hollow structure can divide the smoke into two regions, which helps to improve the quality of the smoke and aroma.

[0021] 4. This invention utilizes the spacing between the inner and outer forming papers and the special hollow structure of the inner and outer forming papers, combined with the flavoring of the forming papers, to better concentrate the aroma of cigarettes, improve the aroma quality and enhance the aroma quantity, and effectively improve the sensory quality of cigarettes. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the cross-section of the vertical filter rod center axis of the triangularly spaced hollow filter rod of the present invention.

[0023] Figure 2 This is a schematic diagram of the molded horn nozzle of the present invention.

[0024] Figure 3 This is a schematic diagram of the internally formed horn nozzle of the present invention.

[0025] Figure 4 This is a schematic diagram of the one-piece molding system for the triangularly spaced hollow filter rods of the present invention.

[0026] The attached figures are labeled as follows: 11, outer forming bell mouth; 111, fixing point; 21, inner forming bell mouth; 211, outer layer; 212, inner layer; 3W, outer forming paper conveyor belt; 3N, inner and outer forming paper conveyor belts; 31, outer forming paper baking device; 32, inner forming paper baking device; 33, inner overlap adhesive device; 34, outer overlap adhesive device; 35, adhesive device; 36, heater; 37, cooler; 38, cutter; 39, separating roller; W, outer forming paper; N, inner forming paper; W1, cylinder; N1, triangle; C, forming bell mouth. Detailed Implementation

[0027] The present invention will be further described below through embodiments, but is not limited to these embodiments. Experimental methods not specifically described in the embodiments generally use conventional conditions and conditions described in the manual, or conditions recommended by the manufacturer. The general equipment, materials, reagents, etc., used are all commercially available unless otherwise specified. The raw materials used in the following embodiments and comparative examples are all commercially available.

[0028] like Figure 1As shown, this invention discloses a triangularly spaced hollow filter rod. The triangularly spaced hollow filter rod is cylindrical in shape and consists of an outer layer of outer forming paper W rolled into a cylinder W1, and an inner layer of inner forming paper N folded into a cylinder with an equilateral triangle N1 in cross-section along the axial direction of the cylinder W1. The three vertices of triangle N1 are located on the inner wall of the cylinder W1. No filament bundles are filled between the outer forming paper W and the inner forming paper N, or inside the inner forming paper N. The basis weight of the outer forming paper W is 30-40 g / m³. 2 Preferably, the basis weight of the internal forming paper N is 90-110 g / m³. 2 To ensure the supporting function of the inner forming paper, triangle N1 is formed by folding two layers of inner forming paper N.

[0029] The method for forming a triangularly spaced hollow filter rod of the present invention uses a one-time filter rod forming system;

[0030] like Figure 4 As shown in Figure 2, the filter rod one-time forming system includes the following components: forming trumpet mouth C, outer forming paper conveyor belt 3W, and inner forming paper conveyor belt 3N; as shown in Figure 2, the forming trumpet mouth C includes an outer forming trumpet mouth 11 and an inner forming trumpet mouth 21, the inner forming trumpet mouth 21 is fitted inside the outer forming trumpet mouth 11, and the outer forming trumpet mouth 11 and the inner forming trumpet mouth 21 are fixed together by fixing point 111; the outer forming trumpet mouth 11 is a cylindrical shape with a gradually decreasing radius; the inner forming trumpet mouth 21 has two layers, the outer layer 211 is a cylindrical shape that gradually transitions from a circle to an equilateral triangle, and the inner layer 212 is a triangular prism shape with an equilateral triangle with a larger area at one end and an equilateral triangle with a smaller area at the other end;

[0031] The forming method of the triangularly spaced hollow filter rod includes the following steps: the outer forming paper conveyor belt 3W conveys the outer forming paper W to the inlet of the forming flared nozzle C, where it is baked by the outer forming paper baking device 31 and then enters the cylinder of the outer forming flared nozzle 11 to be formed into a cylindrical shape W1. After being glued by the outer sealing adhesive device 34, it exits from the outlet of the outer forming flared nozzle 11. At the same time, the inner forming paper conveyor belt 3N conveys the inner forming paper N to the inlet of the forming flared nozzle C, where it is baked by the inner forming paper baking device 32 and then enters the outer layer 211 and inner layer 2 of the inner forming flared nozzle 21. Between 12, it gradually takes shape into a cylindrical shape of equilateral triangle N1, and after being glued by the inner sealing adhesive device 33, it comes out from the outlet of the inner forming horn nozzle 21; at this time, the cylindrical shape of equilateral triangle N1 is nested with the cylindrical cylinder W1 coming out from the outlet of the outer forming horn nozzle 11. After the adhesive device 35 applies adhesive, it glues the three vertices of triangle N1 to the inner wall surface of cylindrical cylinder W1. After being heated again by heater 36, it is cooled and shaped by cooler 37. After being cut by cutter 38, it is output by dividing roller 39, thus obtaining the triangularly spaced hollow filter rod.

[0032] The prepared triangular-spaced hollow filter rod is used as base rod A. It is then combined with other types of filter rods B, such as pod filter rods, granule filter rods, and flavored filter rods, in a specific order and length ratio to produce a triangular-spaced hollow binary composite filter rod. A second combination of base rod A with filter rods B1 and B2 in a specific order and length ratio yields a triangular-spaced hollow ternary composite filter rod. After the composite filter rod is attached to the cigarette rolling machine and the cigarette, the triangular-spaced hollow filter rod is placed at the lip end of the cigarette.

[0033] A comparison of the operation and cigarette results of the method of the present invention with those of existing technologies:

[0034] Production methods Fragrance Aroma rounded feel Convergence Cigarette sensory quality The method of the present invention 14.5 14.5 4 4 91.0 Existing Techniques 13 14.5 3.5 3 90.0

[0035] As can be seen from the above comparison, the triangular-spaced hollow filter rods prepared by the method of the present invention are used in cigarettes prepared by splicing composite filter rods. The smoke is gathered, the smoke is more mellow and delicate, the smoothness is good and it forms a cluster, the taste is round and astringent, and the aroma quality and aroma quantity are increased, which can effectively improve the sensory quality of cigarettes.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A method for forming a fully hollow filter rod with triangular spacing, characterized in that, A one-step filter rod forming system is used; the triangularly spaced hollow filter rod has a cylindrical appearance, consisting of an outer layer of outer forming paper (W) rolled into a cylinder (W1), and an inner layer of inner forming paper (N) folded into a cylinder with an equilateral triangle (N1) in cross-section along the axial direction of the cylinder (W1); the three vertices of the triangle (N1) are on the inner wall surface of the cylinder (W1); there is no fiber bundle between the outer forming paper (W) and the inner forming paper (N), nor inside the inner forming paper (N); the basis weight of the outer forming paper (W) is 30-40 g / m³. 2 The basis weight of the internal forming paper (N) is 90-110 g / m³. 2 The triangle (N1) is formed by folding two layers of inner forming paper (N); The filter rod one-time forming system includes the following components: forming horn nozzle (C), outer forming paper conveyor belt (3W), and inner forming paper conveyor belt (3N); the forming horn nozzle (C) includes an outer forming horn nozzle (11) and an inner forming horn nozzle (21), with the inner forming horn nozzle (21) fitted inside the outer forming horn nozzle (11); the outer forming horn nozzle (11) is a cylindrical shape with a gradually decreasing radius; the inner forming horn nozzle (21) has two layers, with the outer layer (211) being a cylindrical shape that gradually transitions from a circle to an equilateral triangle, and the inner layer (212) being a triangular prism with an equilateral triangle at one end and an equilateral triangle at the other end with a smaller area; The forming method of the triangularly spaced hollow filter rod includes the following steps: the outer forming paper conveyor belt (3W) conveys the outer forming paper (W) to the inlet of the forming flared nozzle (C), where it is baked by the outer forming paper baking device (31) and then enters the cylinder of the outer forming flared nozzle (11) to be formed into a cylindrical (W1) shape. After being glued by the outer sealing glue device (34), it comes out from the outlet of the outer forming flared nozzle (11); at the same time, the inner forming paper conveyor belt (3N) conveys the inner forming paper (N) to the inlet of the forming flared nozzle (C), where it is baked by the inner forming paper baking device (32) and then enters the outer layer (211) and inner layer (211) of the inner forming flared nozzle (21). Between 212), it gradually takes shape into a cylindrical shape of an equilateral triangle (N1), and after being glued by the inner sealing glue device (33), it comes out from the outlet of the inner forming horn mouth (21); at this time, the cylindrical shape of the equilateral triangle (N1) is nested with the cylinder (W1) coming out from the outlet of the outer forming horn mouth (11). After the adhesive device (35) applies glue, it glues the three vertices of the triangle (N1) to the inner wall surface of the cylinder (W1). After being heated again by the heater (36) and cooled by the cooler (37), it is cut by the cutter (38) and output by the dividing roller (39), thus obtaining the hollow filter rod with triangular spacing.

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