A controllable application material filter rod preparation device and method, and a filter rod

Abstract

The application provides a filter rod preparation device and method capable of controllably applying materials, and a filter rod, comprising a supporting unit and an input application unit; the supporting unit is arranged between an input roller and a collecting port of a forming machine, and has a supporting and transferring channel for supporting and transferring a filter rod body material in an open state; the input application unit comprises a storage bin, a conveying pipeline, a start-stop switch and a spraying port, the storage bin is used for storing a filter rod functional material to be applied, the conveying pipeline is connected with the storage bin and the spraying port, the start-stop switch is installed on the conveying pipeline, and the spraying port is located directly above the supporting and transferring channel. In the application, the input application unit applies the filter rod functional material on the filter rod body material in the open state in an intermittent and discontinuous manner, so that the application uniformity of the filter rod functional material is very good, the application position of the filter rod functional material can be accurately controlled, and the cross-sectional position of the filter rod functional material after application in the filter rod can be better controlled.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cigarette filter material preparation, in particular to a filter rod preparation device capable of controllably adding materials, a filter rod preparation method using the filter rod preparation device, and a filter rod obtained using the filter rod preparation method. BACKGROUND

[0002] With the progress and development of society, ordinary people have increasingly high quality requirements for cigarette consumption, pay more attention to health, and focus on the function of reducing tar and harm of cigarettes, and continuously improve the demand for individualization of cigarettes. In recent years, the cigarette manufacturing level of domestic and foreign tobacco companies is rapidly progressing, and a large number of filter rod products with the functions of reducing tar and harm, increasing aroma, preserving moisture, and novel appearance have been launched, such as activated carbon materials, molecular sieve materials, cotton thread aroma, burst bead aroma, groove harm reduction, and hollow tube special-shaped filter rods. As one of the main auxiliary materials of cigarettes, filter rods (also known as filters) play an important role in improving the quality of smoking.

[0003] At present, there are few methods for controllably adding materials in filter rods, mainly through intermittent and non-continuous addition of liquid at the cigarette tongue. For example, a Chinese invention patent with the authorization announcement number CN104720107B discloses a cigarette filter with function materials added in a fixed position in the tow and a preparation method thereof, which mainly sprays a solution containing function materials on the tow through a tail liquid nozzle and a gas nozzle in the tongue of a forming machine, to achieve the purpose of controllably adding materials. For another example, a Chinese invention patent with the authorization announcement number CN107802032B discloses a production method of a non-continuous warm phase change gel aroma-loaded filter rod, which first prepares a warm phase change aroma-loaded gel, and then injects the warm phase change aroma-loaded gel in a liquid state into a conventional acetate filter rod during the forming process of the acetate filter rod, to form a warm phase change gel core line. Through non-continuous addition of the gel in the filter rod, a gel aroma-loaded filter rod with discontinuous gel addition is obtained.

[0004] It can be seen from the above that the existing technology mainly controllably adds function materials to the center position of the filter rod, but the uniformity and cross-sectional position of the added function materials cannot be controlled, and the function materials are basically added in a liquid or semi-solid state, which has high requirements for the form of the function materials, so that the function materials are relatively single, and the simultaneous addition of multiple function materials cannot be achieved, which limits the production of multiple filter rod products. SUMMARY

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the present application is to provide a filter rod preparation device capable of controllably adding materials, which can uniformly add function materials and better control the cross-sectional position of the added function materials.

[0006] To achieve the above object, the present application provides a filter rod preparation device capable of controllable application of materials, comprising a supporting unit and an input application unit.

[0007] The supporting unit is arranged between an input roller and a collection port of a forming machine, and has a supporting and transferring channel for supporting and transferring the filter rod body material in an open state.

[0008] The input application unit comprises a storage bin for storing the filter rod functional material to be applied, a conveying pipeline, a start-stop switch and a material spraying port, the conveying pipeline is connected to the storage bin and the material spraying port, the start-stop switch is installed on the conveying pipeline, and the material spraying port is located directly above the supporting and transferring channel.

[0009] Further, the input application unit further comprises an anti-overflow cover, the material spraying port is located inside the anti-overflow cover, and the lower end of the anti-overflow cover extends to above the supporting and transferring channel.

[0010] Further, the filter rod preparation device further comprises a collection and recycling unit, the collection and recycling unit comprises a collection groove, a recycling bin and a recycling pipeline connected to the collection groove and the recycling bin, the collection groove is arranged directly below the supporting and transferring channel and opposite to the anti-overflow cover.

[0011] Preferably, the anti-overflow cover and the collection groove are one-to-one corresponding in up-down direction, the outer edge of the upper end of the collection groove is aligned with the outer edge of the lower end of the anti-overflow cover, or the outer edge of the upper end of the collection groove is located on the outer circumferential side of the outer edge of the lower end of the anti-overflow cover.

[0012] Further, the supporting unit comprises a first supporting roller arranged on the side of the input roller of the forming machine, a first motor for driving the first supporting roller to rotate, a second supporting roller arranged on the side of the collection port of the forming machine, and a second motor for driving the second supporting roller to rotate, and the area between the upper end of the first supporting roller and the upper end of the second supporting roller constitutes the supporting and transferring channel.

[0013] Preferably, the diameters of the first supporting roller and the second supporting roller are both 80-220 mm, the axial lengths of the first supporting roller and the second supporting roller are both 300-460 mm, and the center distance of the first supporting roller and the second supporting roller is 0.5-1.2 m.

[0014] Further, the input application unit has at least one group, and each material spraying port in each input application unit has at least one.

[0015] The present application also provides a filter rod preparation method capable of controllable application of materials, which uses the filter rod preparation device as described above, and comprises the following steps in sequence:

[0016] S1, the input roller of the forming machine delivers the filter rod body material in an open state to the support transfer channel of the support unit;

[0017] S2, the support transfer channel of the support unit supports and transfers the filter rod body material in an open state, and at the same time, the filter rod functional material in the storage bin is sprayed out through the delivery pipeline and the material spraying port in a certain cycle frequency, and the sprayed filter rod functional material is attached to the filter rod body material, so that the filter rod body material has multiple sections of material area and non-material area, the filter rod body material in the material area is attached with the filter rod functional material, and the filter rod body material in the non-material area is not attached with the filter rod functional material;

[0018] S3, the collection port of the forming machine receives the filter rod body material transferred by the support transfer channel, and rolls and forms the filter rod body material into a filter rod semi-finished product;

[0019] S4, the forming paper is rolled and connected to the outer periphery of the filter rod semi-finished product;

[0020] S5, the filter rod semi-finished product is cut to obtain multiple filter rods, the filter rod has a material section corresponding to the material area and a non-material section corresponding to the non-material area.

[0021] Further, the length of the material area is 10-60mm, and the length of the non-material area is 6-60mm.

[0022] The application further provides a filter rod obtained by using the filter rod preparation method described above, the filter rod comprising a material section and a non-material section connected to each other; the material section comprises a first outer shell composed of forming paper, a first filter rod body part composed of filter rod body material, and a filter rod functional part composed of filter rod functional material, the first filter rod body part is wrapped in the first outer shell, and the filter rod functional part is fixed in the first filter rod body part; the non-material section comprises a second outer shell composed of forming paper and a second filter rod body part composed of only filter rod body material, and the second filter rod body part is wrapped in the second outer shell.

[0023] As described above, the filter rod preparation device and method with controllable material application and the filter rod have the following beneficial effects:

[0024] In the application, the filter rod body material in an open state is supported and transferred by the support transfer channel, and in this process, the filter rod functional material is intermittently and discontinuously applied to the filter rod body material in an open state by the input application unit, so that the application uniformity of the filter rod functional material is very good, and the filter rod functional material is added in line, so that the application position of the filter rod functional material can be accurately controlled, and the cross-sectional position of the filter rod functional material after application can be better controlled. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1Figure 1 is a side view of a filter rod manufacturing device according to an embodiment of the present application.

[0026] Figure 2 Figure 2 is a front view of the filter rod manufacturing device according to the embodiment of the present application. Figure 1

[0027] Figure 3 Figure 3 is a schematic diagram of the application of filter rod functional material to filter rod body material according to the embodiment of the present application. Figure 2

[0028] Figure 4 Figure 4 is a side view of a filter rod manufacturing device according to another embodiment of the present application.

[0029] Figure 5 Figure 5 is a front view of the filter rod manufacturing device according to the embodiment of the present application. Figure 4

[0030] Figure 6 Figure 6 is a schematic diagram of the application of filter rod functional material to filter rod body material according to the embodiment of the present application. Figure 5

[0031] Figure 7 is a schematic diagram of the application of filter rod functional material to filter rod body material according to the embodiment of the present application. Figure 7

[0032] Figure 8 Figure 8 is a schematic diagram of the structure of a filter rod according to the embodiment of the present application.

[0033] Figure 9

[0034] Element Number Explanation

[0035] 10 filter rod body material

[0036] 101 material zone

[0037] 102 material-free zone

[0038] 20 filter rod functional material

[0039] 30 input roller

[0040] 40 collection port

[0041] 50 support and transfer channel

[0042] 60 storage hopper

[0043] 70 delivery duct

[0044] 80 start / stop switch

[0045] 90 material spray port

[0046] 110 spill-proof cover

[0047] ​​​​​120 collection tank

[0048] 130 recycle bin

[0049] 140 recycle pipe

[0050] 150 first support roller

[0051] 160 second support roller DETAILED DESCRIPTION

[0052] The present application will be described by way of specific embodiments, and other advantages and effects of the present application will be readily understood by those skilled in the art from the disclosure.

[0053] It should be noted that the structures, proportions, sizes, etc. shown in the drawings of the present specification are merely used to facilitate understanding and reading by those skilled in the art in conjunction with the disclosure, and do not define the limiting conditions for the implementation of the present application, and therefore do not have technical significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, which does not affect the effects and purposes that can be achieved by the present application, should still fall within the scope of the disclosed technology.

[0054] The present application provides a filter rod preparation device capable of controllably applying a material, a filter rod preparation method using the filter rod preparation device, and a filter rod obtained using the filter rod preparation method. For ease of description, in the following embodiments, the moving direction of the filter rod body material 10 in the filter rod preparation device is defined as the front direction; thus, Figure 1 and Figure 4 In the view shown, the left and right sides of the paper are the front direction and the rear direction, respectively.

[0055] As Figure 1 and Figure 2 , or as Figure 4 and Figure 5As shown, the filter rod preparation device for controllably applying materials according to the present application is located between the input roller 30 and the collection port 40 of the forming machine, and comprises a support unit and an input application unit. The support unit is arranged between the input roller 30 and the collection port 40 of the forming machine and has a support conveying channel 50 for supporting and forwardly conveying the filter rod body material 10 in the open state. The input application unit comprises a storage bin 60, a conveying pipeline 70, a start-stop switch 80, and a spraying port 90. The storage bin 60 is used for storing the filter rod functional material 20 to be applied. The conveying pipeline 70 is connected between the storage bin 60 and the spraying port 90. The start-stop switch 80 is installed on the conveying pipeline 70. The spraying port 90 is located directly above the support conveying channel 50, or in other words, the spraying port 90 is downwardly directed to the support conveying channel 50 and is used for spraying the filter rod functional material 20 to the filter rod body material 10 on the support conveying channel 50.

[0056] Further, based on the filter rod preparation device with the above structure, the present application further provides a filter rod preparation method for controllably applying materials. The filter rod preparation method comprises the following steps in sequence:

[0057] In step S1, the input roller 30 of the forming machine conveys the filter rod body material 10 in the open state to the support conveying channel 50 of the support unit. The open state of the filter rod body material 10 means that the filter rod body material 10 is in a flat state, as shown in Figure 3 or Figure 6 The filter rod body material 10 includes but is not limited to the following materials: fibrous materials such as dacron filament bundles, polylactic acid filament bundles, and polypropylene fibers; and paper materials such as conventional paper and functional paper.

[0058] In step S2, the support conveying channel 50 of the support unit supports and forwardly conveys the filter rod body material 10 in the open state. During the forward conveying process, the start-stop switch 80 is opened and closed at a certain periodic frequency, so that the filter rod functional material 20 in the storage bin 60 is sequentially sprayed downward through the conveying pipeline 70 and the spraying port 90 at a certain periodic frequency. The sprayed filter rod functional material 20 is attached to the filter rod body material 10, so that the filter rod functional material 20 is intermittently and discontinuously applied to the filter rod body material 10 in the open state. In this way, as shown in Figure 7 The filter rod body material 10 has a plurality of material zones 101 and non-material zones 102 spaced apart in the front-rear direction. The filter rod body material 10 in the material zones 101 has the filter rod functional material 20 attached thereto, and the filter rod body material 10 in the non-material zones 102 is free of the filter rod functional material 20. In addition, the filter rod functional material 20 includes but is not limited to the following materials: active carbon particles, molecular sieve materials, fibrous materials, and the like for reducing harm and reducing tar; liquid flavor or solid flavor for flavoring; and pigments for color display.

[0059] Step S3, the collecting port 40 of the forming machine receives the filter rod body material 10 forwarded by the support forwarding channel 50, and the filter rod body material 10 enters the forming gun of the forming machine, and the forming machine rolls the filter rod body material 10 into a filter rod semi-product.

[0060] Step S4, as shown in the figure, the filter rod semi-product is wrapped with the forming paper. Figure 8

[0061] Step S5, the filter rod semi-product is cut at the middle position of the material area 101 and the middle position of the non-material area 102 to obtain a plurality of filter rods; as shown in the figure, the filter rod has a material segment corresponding to the material area 101 and a non-material segment corresponding to the non-material area 102. Figure 9

[0062] Further, based on the above filter rod preparation method with controllable application of materials, the application further provides a filter rod, as shown in the figure, which comprises a material segment and a non-material segment connected in front and back. The material segment comprises a first shell composed of forming paper, a first filter rod body part composed of the filter rod body material 10, and a filter rod functional part composed of the filter rod functional material 20, the first filter rod body part is wrapped in the first shell, and the filter rod functional part is fixed in the first filter rod body part. The non-material segment comprises a second shell composed of forming paper and a second filter rod body part composed of only the filter rod body material 10, and the second filter rod body part is wrapped in the second shell. Figure 9

[0063] The application improves the filter rod forming machine, installs a filter rod preparation device with controllable application of materials between the input roller 30 and the collecting port 40 of the filter rod forming machine, supports and forwards the filter rod body material 10 in the flat and fully opened state by the support forwarding channel 50 before the filter rod body material 10 enters the collecting port 40 of the forming machine, and in this process, the filter rod functional material 20 is intermittently and discontinuously applied on the opened filter rod body material 10 by the input application unit, realizing the online positioning and adding of the filter rod functional material 20 on the filter rod body material 10 in the filter rod forming process, realizing one-step forming without composite process, and making the filter rod meet the design and application of multiple specifications of materials, improving the diversity of products. In particular, the application applies the filter rod functional material 20 in the fully flat and opened state of the filter rod body material 10, so that the uniformity of the application of the filter rod functional material 20 is very good, and the application position of the filter rod functional material 20 on the filter rod body can be accurately controlled, so that the cross-sectional position of the filter rod functional material 20 after application in the filter rod can be better controlled. Moreover, the process of the application is simple and easy to operate, meets the one-step forming requirement of the filter rod containing functional materials, and reduces the composite steps.

[0064] Further, as shown in the figure, Figure 1 or Figure 4 ​​​As shown, the support unit comprises a first support roller 150 arranged at the input roller 30 side of the forming machine, a first motor driving the first support roller 150 to rotate, a second support roller 160 arranged at the collecting port 40 side of the forming machine, and a second motor driving the second support roller 160 to rotate, and the area between the upper end of the first support roller 150 and the upper end of the second support roller 160 constitutes the support conveying channel 50. The first support roller 150 and the second support roller 160 are driven to rotate by two independent motors, and the linear speed of the first support roller 150 and the second support roller 160 is the same as the running speed of the filter rod body material 10. In the present application, the diameters of the first support roller 150 and the second support roller 160 are both 80-220 mm, and preferably both 140-180 mm; the axial lengths of the first support roller 150 and the second support roller 160 in the left-right direction are both 300-460 mm, and preferably both 350-400 mm, and the axial direction of the first support roller 150 and the second support roller 160 is the circumferential direction of the filter rod; the center distance of the first support roller 150 and the second support roller 160 is 0.5-1.2 m, and preferably 0.8 m. Through this arrangement, the filter rod body material 10 can be in a fully open state between the first support roller 150 and the second support roller 160, facilitating the accurate application of the filter rod functional material 20.

[0065] Further, in the input application unit, the conveying pipe 70 is used to ensure that the added filter rod functional material 20 enters the material spraying port 90 under the control of the start-stop switch 80. The start-stop switch 80 is a controller that realizes the rapid start-stop of the switching signal, such as a pulse electromagnetic valve switch; of course, in other embodiments, the start-stop switch 80 can be selected from other controllers. The switching control of the start-stop switch 80 makes the passage of the conveying pipe 70 open and close at a certain periodic frequency, and of course, it can also be kept in a normally open state, so that the filter rod functional material 20 in the storage bin 60 enters the conveying pipe 70 and then enters the material spraying port 90 as needed. When the start-stop switch 80 is open, the filter rod functional material 20 can be sprayed downward from the material spraying port 90 and attached to the filter rod body material 10; when the start-stop switch 80 is closed, the filter rod functional material 20 cannot be sprayed downward from the material spraying port 90, and there is no attachment on the filter rod body material 10. In this way, according to the switching frequency of the start-stop switch 80, the lengths of the material area 101 and the non-material area 102 on the filter rod body material 10 can be controlled; in the present application, the length of the material area 101 is 10-60 mm, and preferably 20-40 mm, and the length of the non-material area 102 is 6-60 mm, and preferably 10-20 mm.

[0066] Further, the input application unit has at least one group, such as 1-4 groups, which can satisfy the application of a single filter rod functional material 20 or multiple filter rod functional materials 20. Each group of the input application unit has at least one, such as 1-4 groups; more specifically, each group of the input application unit has 1-2 groups when a single filter rod functional material 20 is applied; and each group of the input application unit has 2-3 groups when multiple filter rod functional materials 20 are applied. The spray port 90 can satisfy the output flow of various filter rod functional materials 20, such as solid particles, liquid materials, gel materials, and fiber materials. The application mode of the spray port 90 is diverse, including but not limited to the following modes: spraying liquid materials by using air pressure difference, spraying nanofiber materials by using electrospinning process, and applying particle materials by using gravity.

[0067] Further, as shown in Figure 1 and Figure 2 , or Figure 4 and Figure 5 , the input application unit further includes an anti-overflow cover 110, the spray port 90 is located inside the anti-overflow cover 110 and fixed to the upper part of the anti-overflow cover 110, and the lower end of the anti-overflow cover 110 extends to above the support transfer channel 50. The filter rod manufacturing device further includes a collection and recycling unit, which includes a collection tank 120, a recycling bin 130, and a recycling pipeline 140 connecting the collection tank 120 and the recycling bin 130. The collection tank 120 is located directly below the support transfer channel 50 and is arranged opposite to the anti-overflow cover 110. The space between the anti-overflow cover 110 and the collection tank 120 is the support transfer channel 50, and the space between the anti-overflow cover 110 and the collection tank 120 should allow the filter rod body material 10 to pass normally. The excess filter rod functional material 20 sprayed from the spray port 90 is collected by the collection tank 120 and then flows into the corresponding recycling bin 130 through the recycling pipeline 140. The filter rod functional material 20 in the recycling bin 130 can be returned to the storage bin 60 for continuous use, achieving material recycling and avoiding waste.

[0068] Preferably, the anti-overflow cover 110 and the collection tank 120 correspond one-to-one in up and down directions and are consistent in number with the spray port 90. The upper end outer edge of the collection tank 120 is aligned with the lower end outer edge of the anti-overflow cover 110, or the upper end outer edge of the collection tank 120 is located on the outer circumferential side of the lower end outer edge of the anti-overflow cover 110, to avoid leakage of excess filter rod functional material 20 to the outside. In addition, when the materials applied by multiple spray ports 90 are the same, multiple spray ports 90 can correspond to one collection tank 120; however, when the materials applied by multiple spray ports 90 are different, the spray port 90, the anti-overflow cover 110, and the collection tank 120 need to correspond one-to-one to facilitate the recycling of the filter rod functional material 20.

[0069] Further, the following provides two preferred embodiments of the filter rod preparation device, filter rod preparation method, and filter rod prepared according to the present application.

[0070] Example 1, Preparation of Filter Rod with Intermittent Application of Menthol Flavor Material

[0071] As shown in Figure 1 and Figure 2 , the filter rod preparation device has a set of input application units with a spraying port 90. The filter rod base material 10 is a tow of rayon fibers, and the filter rod functional material 20 is a menthol flavor solution mixed with propylene glycol at a mass ratio of 1:1. The menthol flavor solution is added to the storage hopper 60. The tow of rayon fibers is fully opened between the first support roller 150 and the second support roller 160 and is moved forward. The start-stop switch 80 is activated, and the menthol flavor solution is intermittently sprayed at the spraying port 90. The menthol flavor solution is uniformly dispersed on the upper surface of the tow of rayon fibers at a certain frequency of spraying and non-spraying alternation, and the upper surface of the tow of rayon fibers has multiple sections with the menthol flavor solution attached to the material area 101 and without the menthol flavor solution attached to the non-material area 102. The tow of rayon fibers enters the forming gun for rolling and forming after passing through the collection port 40 of the forming machine, is wrapped with forming paper, and is finally cut into multiple sections of filter rods of the desired length by the cutting knife. In the material section of the filter rod, the forming paper wraps the tow of rayon fibers, and the tow of rayon fibers contains the menthol flavor solution. In the non-material section of the filter rod, the forming paper wraps the tow of rayon fibers, and the tow of rayon fibers does not contain the menthol flavor solution.

[0072] Example 2, Preparation of Filter Rod with Regional Application of Activated Carbon Particles and Tobacco Leaf Particles

[0073] As shown in Figure 4 and Figure 5As shown, there are two groups of input application units in the filter rod preparation device, each group of input application units has a spraying port 90; the filter rod body material 10 is a cellulose acetate tow; the filter rod functional material 20 has two kinds, which are activated carbon particles and tobacco particles. The activated carbon particles are added to the storage bin 60 of one group of input application units, and the tobacco particles are added to the storage bin 60 of the other group of input application units; the cellulose acetate tow is fully opened between the first supporting roller 150 and the second supporting roller 160 and is forwarded, the width of the cellulose acetate tow between the first supporting roller 150 and the second supporting roller 160 is about 260 mm; the start-stop switch 80 in the two groups of input application units is started, the spraying port 90 in one group of input application units intermittently sprays activated carbon particles, and the spraying port 90 in the other group of input application units intermittently sprays tobacco particles, the width ratio of the activated carbon particles and the tobacco particles applied by the two groups of input application units is 2:1; by adjusting the application amount of the spraying port 90 in the two groups of input application units, the mass ratio of the activated carbon particles and the tobacco particles added in the cellulose acetate tow is 2:1. The activated carbon particles and the tobacco particles are uniformly attached on the upper surface of the cellulose acetate tow in a certain frequency of spraying and non-spraying alternation. After the cellulose acetate tow passes through the collection port 40 of the forming machine, it enters the forming tobacco gun for rolling and forming, is wrapped with the forming paper, and is finally cut into multiple filter rods with required lengths by the cutting knife. In the filter rod with material, the forming paper wraps the cellulose acetate tow, and the cellulose acetate tow contains activated carbon particles and tobacco particles; in the filter rod without material, the forming paper wraps the cellulose acetate tow, and the cellulose acetate tow does not contain activated carbon particles and tobacco particles.

[0074] In summary, the present application realizes online positioning and adding of functional materials on the tow in the filter rod forming process, so that the filter rod meets the design and application of multiple specifications of materials. In particular, the present application applies the filter rod functional material 20 in the state that the filter rod body material 10 is fully opened, and the uniformity of application is better, which not only realizes regional application of materials, but also realizes intermittent and discontinuous application, thereby improving the diversity of products; through the multiple spraying ports 90, simultaneous selection and application of different filter rod functional materials 20 can be realized; and the process is simple and easy to operate, which meets the one-time forming demand of filter rods containing functional materials and reduces the composite steps.

[0075] Therefore, the present application effectively overcomes various disadvantages in the prior art and has high industrial utilization value.

[0076] The above embodiments are only illustrative of the principles of the present application and its efficacy, and are not intended to limit the present application. Any modification or change made by any person skilled in the art without departing from the spirit and scope of the present application shall be covered by the claims of the present application.

Claims

1. A method for preparing a filter rod with controllable material application, using a filter rod preparation apparatus with controllable material application, characterized in that: The filter rod preparation device with controllable material application includes a support unit and an input application unit; The support unit is disposed between the input roller (30) and the collection port (40) of the molding machine and has a support transfer channel (50), which is used to support and transfer the filter rod body material (10) in the open state. The input application unit includes a storage bin (60), a conveying pipe (70), a start / stop switch (80), and a spray nozzle (90). The storage bin (60) is used to store the filter rod functional material (20) to be applied. The conveying pipe (70) connects the storage bin (60) and the spray nozzle (90). The start / stop switch (80) is installed on the conveying pipe (70). The spray nozzle (90) is located directly above the support transfer channel (50). The filter rod preparation method includes the following steps in sequence: S1. The input roller (30) of the molding machine transports the filter rod body material (10) in the open state to the support transfer channel (50) of the support unit. S2, the support and transfer channel (50) of the support unit supports and transfers the filter rod body material (10) in the open state. The open state of the filter rod body material (10) also means that the filter rod body material (10) is in a flat state. At the same time, the filter rod functional material (20) in the storage bin (60) is sprayed out at a certain periodic frequency through the conveying pipe (70) and the spray nozzle (90) by the start / stop switch (80). The sprayed filter rod functional material (20) adheres to the filter rod body material. On the filter rod body material (10), filter rod functional material (20) is intermittently and discontinuously applied to the filter rod body material (10) in the open state, so that the filter rod body material (10) has multiple spaced material areas (101) and material-free areas (102). The filter rod body material (10) in the material area (101) is attached with filter rod functional material (20), and the filter rod body material (10) in the material-free area (102) is free of filter rod functional material (20). S3, the collection port (40) of the molding machine receives the filter rod body material (10) transferred by the support transfer channel (50) and rolls the filter rod body material (10) into a filter rod semi-finished product; S4. Wrap forming paper around the outer periphery of the filter rod semi-finished product; S5. Cut the filter rod semi-finished product to obtain multiple filter rod segments. The filter rod has a material segment corresponding to the material area (101) and a material-free segment corresponding to the material-free area (102).

2. The method for preparing a filter rod with controllable material application according to claim 1, characterized in that: The input application unit also includes an overflow shield (110), the nozzle (90) is located inside the overflow shield (110), and the lower end of the overflow shield (110) extends above the support transfer channel (50).

3. The method for preparing a filter rod with controllable material application according to claim 2, characterized in that: The filter rod preparation device also includes a collection and reuse unit, which includes a collection tank (120), a reuse hopper (130), and a reuse pipe (140) connecting the collection tank (120) and the reuse hopper (130). The collection tank (120) is located directly below the support transfer channel (50) and is positioned opposite the overflow cover (110).

4. The method for preparing a filter rod with controllable material application according to claim 3, characterized in that: The overflow cover (110) and the collection trough (120) are in a one-to-one correspondence; the upper outer edge of the collection trough (120) is aligned with the lower outer edge of the overflow cover (110), or the upper outer edge of the collection trough (120) is located on the outer periphery of the lower outer edge of the overflow cover (110).

5. The method for preparing a filter rod with controllable material application according to claim 1, characterized in that: The support unit includes a first support roller (150) disposed on the side of the input roller (30) of the molding machine, a first motor that drives the first support roller (150) to rotate, a second support roller (160) disposed on the side of the collection port (40) of the molding machine, and a second motor that drives the second support roller (160) to rotate. The area between the upper end of the first support roller (150) and the upper end of the second support roller (160) constitutes the support transfer channel (50).

6. The method for preparing a filter rod with controllable material application according to claim 5, characterized in that: The diameter of the first support roller (150) and the second support roller (160) is 80-220mm, the axial length of the first support roller (150) and the second support roller (160) is 300-460mm, and the center distance between the first support roller (150) and the second support roller (160) is 0.5-1.2m.

7. The method for preparing a filter rod with controllable material application according to claim 1, characterized in that: There is at least one set of input application units; each input application unit has at least one nozzle (90).

8. The method for preparing filter rods according to claim 1, characterized in that: The length of the material area (101) is 10-60mm, and the length of the materialless area (102) is 6-60mm.

9. A filter rod, characterized in that: The filter rod is obtained using the filter rod preparation method according to claim 1, wherein the filter rod comprises a connected material section and a material-free section; The material section includes a first outer shell made of molded paper, a first filter rod body made of filter rod body material (10), and a filter rod functional part made of filter rod functional material (20). The first filter rod body is wrapped inside the first outer shell, and the filter rod functional part is fixed inside the first filter rod body. The material-free section includes a second outer shell made of molded paper and a second filter rod body made only of filter rod body material (10), the second filter rod body being enclosed within the second outer shell.

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