A sandwiched filled hollow triangular filter rod and a method of processing the same

Abstract

The application discloses a sandwich filled hollow triangular filter rod, which is cylindrical and is composed of an outer layer of outer tipping paper (W) rolled into a cylinder (W1) and an inner layer of inner tipping paper (N) folded into a cylinder with a triangular cross section (N1) along the axial direction of the cylinder (W1), wherein the three vertices of the triangle (N1) are on the inner wall surface of the cylinder (W1), and wherein the outer tipping paper (W) and the inner tipping paper (N) are filled with outer tow (S1). The application also discloses a forming method of the sandwich filled hollow triangular filter rod.

Description

Technical Field

[0001] This invention belongs to the field of tobacco technology, specifically relating to a hollow triangular filter rod with sandwich filling 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 hollow triangular filter rod with sandwich filling. The fiber bundle is filled between an inner supporting forming paper and an outer wrapping forming paper, providing a certain filtering effect in cigarettes. Because the triangular structure contains relatively few fibers, it can be placed at the end of the filter rod. By controlling the type and amount of fiber bundle added, either cellulose acetate or polylactic acid fiber bundles can be used to prepare an equilateral triangular filter rod with low draw resistance. The inner supporting forming paper can be flavored or coated forming paper, allowing for the preparation of flavored filter rods.

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

[0008] The first aspect of this invention discloses a sandwich-filled hollow triangular filter rod, which is cylindrical in appearance 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; and the three vertices of the triangle N1 are on the inner wall surface of the cylinder W1; wherein, an outer filament bundle S1 is filled between the outer forming paper W and the inner forming paper N.

[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 2.

[0012] Preferably, the single denier and total denier of the outer yarn bundle S1 are 3.0-12.0Y and 15000-35000D, respectively; generally, they are 3.9Y / 31000D, 3.0Y / 32000D, 3.0Y / 35000D, and 3.8Y / 34000D, which can be selected according to the filter rod design requirements. Generally, standard branch filter rods are 3.0-3.9Y, 31000-35000D; medium branch filter rods are 3.8-6.7Y, 22000-34000D; and fine branch filter rods are 6.0-12.0Y, 15000-16000D.

[0013] Preferably, the inner and outer layers of the forming paper can be scented separately or simultaneously.

[0014] The second aspect of this invention discloses a method for forming the sandwich-filled hollow triangular filter rod, using a one-time filter rod forming system;

[0015] The filter rod one-time forming system includes the following components: forming trumpet mouth C, outer forming paper conveyor belt 3W, inner forming paper conveyor belt 3N, and outer filament conveyor belt 42; the forming trumpet mouth C includes an outer forming trumpet mouth 11 and an inner forming trumpet mouth 21, with the inner forming trumpet mouth 21 fitted inside the outer forming trumpet mouth 11; the outer forming trumpet mouth 11 is a cylindrical shape with a gradually decreasing radius; the inner forming trumpet mouth 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 shape with an equilateral triangle with a larger area at one end and a smaller area at the other end;

[0016] The molding method of the sandwich-filled hollow triangular 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 glue device 34, it comes out from the outlet of the outer forming flared nozzle 11. At this time, the outer filament bundle S1 conveyed by the outer filament bundle conveyor belt 42 is fed into the outer forming paper W; 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, it gradually takes shape into a cylindrical form 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 flared nozzle 21; the cylindrical form of equilateral triangle N1 is nested with the cylindrical form W1 coming out from the outlet of the outer forming flared nozzle 11, and the space between the outer forming paper W and the inner forming paper N is filled with outer filament bundle S1; after the formed sandwich-filled triangular filter rod is glued by the adhesive device 35, the three vertices of triangle N1 are glued to the inner wall surface of the cylindrical form W1, and after being heated by the heater 36, it is cooled and shaped by the cooler 37, and after being cut by the cutter 38, it is output by the dividing roller 39, thus obtaining the sandwich-filled hollow triangular filter rod.

[0017] The hollow triangular filter rod with sandwich filling prepared in this invention is used as base rod A. It is then combined with other filter rods B of different types, such as pod filter rods, granule filter rods, and flavored filter rods, in a specific order and length ratio to prepare a sandwich-filled triangular 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 sandwich-filled triangular ternary composite filter rod. After the composite filter rod is attached to the cigarette rolling machine and the cigarette, the sandwich-filled triangular filter rod is placed at the lip end of the cigarette.

[0018] The beneficial effects of this invention are:

[0019] 1. This invention uses filaments of different denier and inner and outer forming papers of different basis weights to prepare hollow triangular filter rods with sandwich filling, thereby achieving different functions; the filling filaments can use low denier filaments to improve filtration efficiency. In contrast, hollow filter rods obtained by existing methods cannot utilize existing fragrance technology for differentiated processing due to thermoplastic molding, nor can they be made into hollow filter rod segments.

[0020] 2. This invention independently designed and manufactured a molded flared nozzle. The molded flared nozzle includes an outer molded flared nozzle and an inner molded flared nozzle, with the inner molded flared nozzle nestled inside the outer molded flared nozzle. The outer molded flared nozzle is a cylindrical shape with a gradually decreasing radius. The inner molded 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 shaped like an equilateral triangle with a larger area at one end and a smaller area at the other end. The molded flared nozzle of this invention easily molds the inner and outer molded paper into the desired shape in one step; it is easily suitable for large-scale industrial production.

[0021] 3. In this invention, the inner and outer layers of forming paper are bonded together, and the space between the inner and outer layers of forming paper is filled with filament bundles. The inner layer of forming paper has a cavity, which is different from the hollow structure inside the current hollow filter rod in terms of the position and mechanism of smoke flow. The hollow triangular filter rod with interlayer filling in this invention can better gather the smoke, making the smoke softer and more delicate, with a smooth and cohesive feel, and a rounded and astringent taste.

[0022] 4. The hollow triangular filter rod of the present invention is filled with filaments in the interlayer. Combined with the flavoring of the forming paper and the flavoring of the filaments, the flavoring effect of the filaments can be better utilized, which is more conducive to the accumulation of cigarette aroma, improves the aroma quality of cigarette, strengthens the aroma quantity, and can effectively improve the sensory quality of cigarette. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the cross-section of the hollow triangular filter rod with sandwich filling according to the present invention, perpendicular to the central axis of the filter rod.

[0024] Figure 2 This is a schematic diagram of the molded horn nozzle of the present invention.

[0025] Figure 3 This is a schematic diagram of the internally formed horn nozzle of the present invention.

[0026] Figure 4 This is a schematic diagram of the one-time molding system for the sandwich-filled hollow triangular filter rod of the present invention.

[0027] 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 grouting device; 34, outer grouting device; 35, adhesive device; 36, heater; 37, cooler; 38, cutter; 39, separating roller; 41, outer filament bundle; 42, outer filament bundle conveyor belt; 43, outer additive box; W, outer forming paper; N, inner forming paper; W1, cylinder; N1, triangle; C, forming bell mouth; S1, outer filament bundle. Detailed Implementation

[0028] 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.

[0029] like Figure 1 The diagram shows a cross-sectional view of the hollow triangular filter rod with sandwich filling according to the present invention, perpendicular to the central axis of the filter rod. The triangular filter rod is cylindrical in appearance 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; an outer filament bundle S1 is filled between the outer forming paper W and 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 Triangle N1 is formed by folding two layers of inner forming paper 2.

[0030] The single denier and total denier of the outer yarn bundle S1 are 3.0Y / 32000D.

[0031] The second aspect of this invention discloses a method for forming the sandwich-filled hollow triangular filter rod, using a one-time filter rod forming system;

[0032] like Figure 4 As shown, the filter rod one-time forming system includes the following components: forming bell mouth C, outer forming paper conveyor belt 3W, inner forming paper conveyor belt 3N, and outer filament conveyor belt 42; Figure 2 As shown, the molded flared nozzle C includes an outer molded flared nozzle 11 and an inner molded flared nozzle 21, with the inner molded flared nozzle 21 fitted inside the outer molded flared nozzle 11; the outer molded flared nozzle 11 is a cylindrical shape with a gradually decreasing radius; as shown... Figure 3 As shown, the inner-formed horn 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 with an equilateral triangle with a larger area at one end and a smaller area at the other end.

[0033] The molding method of the sandwich-filled hollow triangular 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 glue device 34, it comes out from the outlet of the outer forming flared nozzle 11. At this time, the outer filament bundle S1 conveyed by the outer filament bundle conveyor belt 42 is fed into the outer forming paper W; 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 21 of the inner forming flared nozzle 21. Between 2, 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; the cylindrical shape of equilateral triangle N1 is nested with the cylinder W1 coming out from the outlet of the outer forming horn nozzle 11, and the space between the outer forming paper W and the inner forming paper N is filled with outer filament bundle S1; after the formed sandwich-filled triangular filter rod is glued by the adhesive device 35, the three vertices of triangle N1 are glued to the inner wall surface of cylinder W1, and after being heated by heater 36, it is cooled and shaped by cooler 37, and after being cut by cutter 38, it is output by dividing roller 39, thus obtaining the sandwich-filled hollow triangular filter rod.

[0034] The hollow triangular filter rod with sandwich filling prepared in this invention is used as base rod A. It is then combined with other filter rods B of different types, such as pod filter rods, granule filter rods, and flavored filter rods, in a specific order and length ratio to prepare a sandwich-filled triangular 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 sandwich-filled triangular ternary composite filter rod. After the composite filter rod is attached to the cigarette rolling machine and the cigarette, the sandwich-filled triangular filter rod is placed at the lip end of the cigarette.

[0035] A comparison of the operation and cigarette results of the method of the present invention with those of existing technologies:

[0036] Production methods Fragrance Aroma Softness and delicacy rounded feel Convergence Cigarette sensory quality The method of the present invention 14 16.0 4.5 5 5 91.5 Existing Techniques 13 14.5 3.5 3.5 3 90.0

[0037] As can be seen from the above comparison, the hollow triangular filter rod with interlayer filling prepared by the method of the present invention is 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.

[0038] 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 sandwich-filled hollow triangular filter rod, wherein the sandwich-filled hollow triangular filter rod is characterized in that, The hollow triangular filter rod is cylindrical in appearance 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 the triangle (N1) are on the inner wall of the cylinder (W1); an outer filament bundle (S1) is filled between the outer forming paper (W) and 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 (2); the outer filament bundle (S1) is 3.0-12.0Y, 15000-35000D; Its characteristic is that it uses a one-time filter rod forming system; The filter rod one-time forming system includes the following components: forming trumpet nozzle (C), outer forming paper conveyor belt (3W), inner forming paper conveyor belt (3N), and outer filament conveyor belt (42); the forming trumpet nozzle (C) includes an outer forming trumpet nozzle (11) and an inner forming trumpet nozzle (21), with the inner forming trumpet nozzle (21) fitted inside the outer forming trumpet nozzle (11); the outer forming trumpet nozzle (11) is a cylindrical shape with a gradually decreasing radius; the inner forming trumpet 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 with a larger area at one end and a smaller area at the other end; The molding method of the sandwich-filled hollow triangular 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 horn nozzle (C), where it is baked by the outer forming paper baking device (31) and then enters the cylinder of the outer forming horn nozzle (11) to be formed into a cylindrical shape (W1). After being glued by the outer sealing glue device (34), it comes out from the outlet of the outer forming horn nozzle (11). At this time, the outer filament bundle (S1) conveyed from the outer filament bundle conveyor belt (42) is sent into the outer forming paper (W); at the same time, the inner forming paper conveyor belt (3N) conveys the inner forming paper (N) to the inlet of the forming horn 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 horn nozzle (21). Between 12), it is gradually formed 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); 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), and the outer forming paper (W) and the inner forming paper (N) are filled with outer filament bundles (S1); after the formed sandwich-filled triangular filter rod is glued by the adhesive device (35), the three vertices of the triangle (N1) are glued to the inner wall surface of the cylinder (W1), heated by the heater (36), cooled and shaped by the cooler (37), and cut by the cutter (38) and output by the dividing roller (39), thus obtaining the sandwich-filled hollow triangular filter rod.

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