Multifunctional non-woven material filter stick, preparation method thereof and cigarette product

Abstract

The invention provides a multifunctional non-woven material filter stick, a preparation method thereof and a cigarette product. The multifunctional non-woven material filter stick comprises a non-woven fabric and a base material which are stacked and wound, the non-woven fabric is made of one or more of lyocell fibers, modal fibers, polylactic acid fibers, viscose fibers, hemp fibers and wood pulp fibers; the base material comprises a membrane material, and the membrane material comprises one or more of a polylactic acid membrane, a polyvinyl chloride membrane, a polyethylene membrane, a polypropylene membrane, a polyethylene glycol terephthalate membrane, a polyadipic acid / butylene terephthalate membrane, a cellulose acetate membrane, a water-based coating membrane and a metallized membrane. The filter stick is prepared from the non-woven fabric made of the specific material and the base material made of the specific material, the non-woven fabric has a good tar reducing and harm reducing effect, and the content of harmful substances such as nicotine and tar in smoke can be obviously reduced; the base material can improve the roundness, hardness and the like of the filter stick, so that the filter stick has good supporting performance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of filter rods for cigarettes, in particular to a multifunctional non-woven material filter rod, a preparation method thereof and a cigarette product. BACKGROUND

[0002] A filter rod is an important component of a cigarette product, mainly used for filtering smoke and reducing harmful substances, etc.

[0003] Traditional cellulose acetate tow filter rods have good adsorption effect and good filtration, but the natural degradation time of cellulose acetate tow is relatively long, and the discarded filter rods are mainly treated by incineration, which pollutes the environment. The filter rod made of degradable paper has a significant filtering effect on harmful substances such as tar in smoke, but has problems such as weak smoke flavor, insufficient aroma and heavy paper smell. In recent years, the non-woven material filter rod has both degradability and the functions of reducing tar and reducing harm, and can maintain good smoking experience, but has the problem of poor support. SUMMARY

[0004] Therefore, one or more embodiments of the present application provide a multifunctional non-woven material filter rod with environmental protection, obvious tar reduction and harm reduction effect and good support, a preparation method thereof, and a cigarette product comprising the multifunctional non-woven material filter rod.

[0005] According to a first aspect of an embodiment of the present application, a multifunctional non-woven material filter rod is provided, comprising a non-woven fabric and a substrate which are laminated and wound.

[0006] The material of the non-woven fabric comprises one or more of lyocell fiber, modal fiber, polylactic acid fiber, viscose fiber, hemp fiber and wood pulp fiber.

[0007] The substrate comprises a film material, and the film material comprises one or more of polylactic acid film, polyvinyl chloride film, polyethylene film, polypropylene film, polyethylene terephthalate film, polybutylene adipate / terephthalate film, cellulose acetate film, water-based coating film and metallized film.

[0008] In some embodiments, the film material comprises a polylactic acid film and a polypropylene film which are laminated.

[0009] In some embodiments, the material of the non-woven fabric comprises modified lyocell fiber, and the modifier for preparing the modified lyocell fiber is selected from one or more of alkyl ketene dimer, silicone resin, silicone oil, cellulose acetate and fatty acid derivative.

[0010] In some embodiments, the basis weight of the non-woven fabric is 10g / m 2 ~100g / m 2 ; and / or,

[0011] the nonwoven fabric has a width of 50mm to 200mm; and / or,

[0012] the nonwoven fabric has a thickness of 0.05mm to 1mm.

[0013] In some embodiments, the film material has a basis weight of 10g / m 2 500g / m 2 ; and / or,

[0014] the film material has a width of 50mm to 200mm; and / or,

[0015] the film material has a thickness of 0.05mm to 1mm.

[0016] In some embodiments, the substrate further comprises a shaped paper disposed on the outer side of the film material.

[0017] In some embodiments, the multifunctional nonwoven material filter rod has a circumference of 14mm to 28mm; and / or,

[0018] the multifunctional nonwoven material filter rod has a length of 5mm to 60mm.

[0019] According to a second aspect of the embodiments of the present application, a preparation method of the multifunctional nonwoven material filter rod is provided, comprising the following steps:

[0020] stacking the nonwoven fabric and the film material, and sequentially performing embossing treatment and roll forming treatment to prepare the multifunctional nonwoven material filter rod.

[0021] In some embodiments, the film material is prepared by one or more of a flow casting method, an extrusion method or a blowing method; and / or,

[0022] the embossing treatment has an embossing width of 0.5mm to 5mm.

[0023] According to a third aspect of the embodiments of the present application, a cigarette product is provided, comprising the multifunctional nonwoven material filter rod.

[0024] Compared with the prior art, the present application has the following beneficial effects:

[0025] The multifunctional nonwoven material filter rod of the present application is prepared by using a nonwoven fabric of a specific material and a substrate of a specific material, wherein the nonwoven fabric has good smoke reduction and harm reduction effects, and can significantly reduce the content of harmful substances such as nicotine and tar in smoke; the specific type of substrate can improve the roundness and hardness of the filter rod, and make it have good supportability. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application, the following will briefly introduce the drawings needed to be used in the specific embodiments description. Obviously, the drawings described below are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0027] Figure 1 A schematic diagram of embossing treatment in the preparation of a multifunctional nonwoven material filter rod according to an embodiment of the present application. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application will be described in detail. In the following description, a large number of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein is only for the purpose of describing specific embodiments of the present application and is not intended to limit the present application. Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present application can be purchased on the market or can be prepared by existing methods.

[0030] The selection range of the terms "and / or", "or / and", "and / or" used herein includes any one of two or more related listed items, and also includes any and all combinations of related listed items, which includes any two related listed items, any more related listed items, or all related listed items. It should be noted that when at least two conjunctions selected from "and / or", "or / and", "and / or" are combined to connect at least three items, it should be understood that in the present application, the technical solution undoubtedly includes the technical solution connected by "logical and", and also undoubtedly includes the technical solution connected by "logical or". For example, "A and / or B" includes three parallel solutions of A, B and A+B. For another example, the technical solution of "A, and / or, B, and / or, C, and / or, D" includes any one of A, B, C and D (i.e. the technical solution connected by "logical or"), and also includes any and all combinations of A, B, C and D, i.e. includes the combination of any two or any three of A, B, C and D, and also includes the four-item combination of A, B, C and D (i.e. the technical solution connected by "logical and").

[0031] In the present application, “plurality”, “varieties”, “multiple times”, “multiple”, and the like, if not specifically limited, refer to more than 2 or equal to 2 in quantity. For example, “one or more” means one or more than two.

[0032] As used herein, “combinations thereof”, “any combination thereof”, “any combination manner thereof”, and the like, include all suitable combination manners of any two or more of the listed items.

[0033] In the present application, “suitable”, “suitable manner”, “any suitable manner”, and the like, refer to the ability to implement the technical solutions of the present application, solve the technical problems of the present application, and achieve the intended technical effects of the present application.

[0034] In the present application, “preferably”, “better”, “better”, “as appropriate”, and the like, are only used to describe the implementation manner or embodiment with better effect, and it should be understood that it does not constitute a limitation on the protection scope of the present application.

[0035] In the present application, “further”, “more further”, “particularly”, and the like are used to describe the purpose, indicating the difference in content, but should not be understood as a limitation on the protection scope of the present application.

[0036] In the present application, the technical features described in an open manner include both the closed technical solutions composed of the listed features and the open technical solutions containing the listed features.

[0037] In the present application, if no special instructions are given, the numerical interval (i.e. the numerical range) is selected to be continuous within the above-mentioned numerical interval, and includes the two numerical endpoints (i.e. the minimum value and the maximum value) of the numerical range, as well as every numerical value between the two numerical endpoints. If no special instructions are given, when the numerical interval only refers to the integers within the numerical interval, including the two endpoint integers of the numerical range and every integer between the two endpoints, in this article, it is equivalent to directly listing each integer, such as t is an integer selected from 1 to 10, which means that t is any one integer selected from the group consisting of 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10. In addition, when multiple ranges are provided to describe characteristics or properties, these ranges can be combined. In other words, unless otherwise specified, the ranges disclosed herein should be understood to include any and all sub-ranges encompassed therein.

[0038] In the present application, the temperature parameter, if not specifically limited, allows for constant temperature treatment, and also allows for fluctuations within a certain temperature range. It should be understood that the constant temperature treatment allows the temperature to fluctuate within the accuracy range controlled by the instrument. It is allowed to fluctuate within the range of, for example, ±5℃, ±4℃, ±3℃, ±2℃, ±1℃.

[0039] In the present application, %(w / w) and wt% both represent weight percentage, %(v / v) refers to volume percentage, and %(w / v) refers to mass volume percentage.

[0040] The weight of the related components mentioned in the embodiment description of the present application can not only refer to the specific content of each component, but also represent the proportional relationship between the weights of each component. Therefore, as long as the content of the related components in the embodiment description of the present application is enlarged or reduced in proportion, it is within the scope disclosed in the embodiment description of the present application. Specifically, the weight mentioned in the embodiment description of the present application can be μg, mg, g, kg, and other mass units commonly known in the chemical field.

[0041] Except as otherwise indicated in the operation examples or otherwise indicated, all numbers expressing quantities of components, properties, and so forth used in the specification and claims are to be understood as being modified in all instances by the term "about." Accordingly, unless indicated to the contrary, the numerical parameters set forth in the foregoing description and attached claims are approximations that can vary depending upon the desired properties sought to be obtained by those skilled in the art utilizing the teachings of the present disclosure. At the very least, each numerical parameter should at least be construed in light of the number of reported significant digits and by applying ordinary rounding techniques. The disclosure should not be construed as being limited to the exact numerical values set forth herein but rather to apply to any numerical values missing the precision of the values set forth.

[0042] In some embodiments of the present application, a multifunctional nonwoven filter rod is provided, comprising a nonwoven fabric and a substrate which are laminated and wound;

[0043] The material of the nonwoven fabric comprises one or more of lyocell fiber, modal fiber, polylactic acid fiber, viscose fiber, hemp fiber, and wood pulp fiber.

[0044] The substrate comprises a film material, and the film material comprises one or more of polylactic acid film, polyvinyl chloride film, polyethylene film, polypropylene film, polyethylene terephthalate film, polybutylene adipate terephthalate film, cellulose acetate film, water-based coating film, and metallized film.

[0045] The multifunctional nonwoven filter rod of the present application is prepared by using a nonwoven fabric of a specific material and a film material of a specific material. The nonwoven fabric has good effect of reducing tar and harm, and can significantly reduce the content of harmful substances such as nicotine and tar in smoke. The film material can improve the roundness and hardness of the filter rod, and make it have good supportability.

[0046] In some embodiments, the film material comprises a polylactic acid film and a polypropylene film which are laminated.

[0047] It can be understood that the composite film made of polylactic acid and polypropylene can further improve the cooling effect and supporting performance of the multifunctional non-woven filter rod.

[0048] In some embodiments, the material of the non-woven fabric is selected from modified lyocell fibers, and the modifier for preparing the modified lyocell fibers is selected from one or more of alkyl ketene dimer, silicone resin, silicone oil, cellulose acetate, and fatty acid derivative. It can be understood that the use of modified lyocell fibers can further improve the properties of reducing tar, sweetening taste, and degradation.

[0049] Further, the silicone resin is a food-grade silicone resin.

[0050] Further, the silicone oil is a food-grade silicone oil.

[0051] In some specific embodiments, the modified lyocell fiber is a hydrophobically modified lyocell fiber.

[0052] In some embodiments, the basis weight of the non-woven fabric is 10g / m 2 ~100g / m 2 .

[0053] In the present application, the "basis weight" refers to the weight of the material per unit area.

[0054] For example, the basis weight of the non-woven fabric can be 10g / m 2 , 20g / m 2 , 30g / m 2 , 40g / m 2 , 50g / m 2 , 60g / m 2 , 70g / m 2 , 80g / m 2 , 90g / m 2 , 100g / m 2 , or any value within the range formed by any two of the above values.

[0055] Further, the basis weight of the non-woven fabric is 10g / m 2 ~50g / m 2 .

[0056] In some embodiments, the width of the non-woven fabric is 50mm~200mm.

[0057] As an example, the nonwoven fabric can have a width of 50 mm, 60 mm, 70 mm, 80 mm, 90 mm, 100 mm, 110 mm, 120 mm, 130 mm, 140 mm, 150 mm, 160 mm, 170 mm, 180 mm, 190 mm, 200 mm, or any value within a range defined by any two of the above values.

[0058] Further, the nonwoven fabric can have a width of 80 mm to 200 mm.

[0059] In some embodiments, the nonwoven fabric can have a thickness of 0.05 mm to 1 mm.

[0060] As an example, the nonwoven fabric can have a thickness of 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm, 0.1 mm, 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, or any value within a range defined by any two of the above values.

[0061] Further, the nonwoven fabric can have a thickness of 0.2 mm to 1 mm.

[0062] In some embodiments, the film material can have a basis weight of 10 g / m 2 to 500 g / m 2 .

[0063] As an example, the film material can have a basis weight of 10 g / m 2 , 20 g / m 2 , 30 g / m 2 , 40 g / m 2 , 50 g / m 2 , 60 g / m 2 , 70 g / m 2 , 80 g / m 2 , 90 g / m 2 , 100 g / m 2 , 100 g / m 2 , 150 g / m 2 , 200 g / m 2 , 250 g / m 2 , 300 g / m 2 , 350 g / m 2 , 400 g / m 2 , 450 g / m 2 , 500 g / m 2 , or any value within a range defined by any two of the above values.

[0064] In some embodiments, the width of the film is 50mm to 200mm.

[0065] For example, the width of the film can be 50mm, 60mm, 70mm, 80mm, 90mm, 100mm, 110mm, 120mm, 130mm, 140mm, 150mm, 160mm, 170mm, 180mm, 190mm, 200mm, or any value within a range defined by any two of the above values.

[0066] Further, the width of the film is 80mm to 200mm.

[0067] In some embodiments, the thickness of the film is 0.05mm to 1mm.

[0068] For example, the thickness of the film can be 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, 0.1mm, 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, or any value within a range defined by any two of the above values.

[0069] Further, the thickness of the film is 0.2mm to 1mm.

[0070] In some embodiments, the substrate further comprises a formed paper disposed on the outer side of the film. It is understood that the outer side of the film refers to the side of the film that is away from the central axis of the multifunctional nonwoven filter rod.

[0071] In some embodiments, the circumference of the multifunctional nonwoven filter rod is 14mm to 28mm.

[0072] For example, the circumference of the multifunctional nonwoven filter rod can be 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm, 25mm, 26mm, 27mm, 28mm, or any value within a range defined by any two of the above values.

[0073] In some embodiments, the length of the multifunctional nonwoven filter rod is 5mm to 60mm.

[0074] For example, the length of the multifunctional nonwoven filter rod can be 5mm, 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm, or any value within a range defined by any two of the above values.

[0075] The multifunctional nonwoven filter rod of the present application has at least the advantages of reducing tar and harm, environmental protection and degradation, good support, and good cooling effect.

[0076] Some embodiments of the present application further provide a method for preparing the multifunctional nonwoven filter rod as described above, comprising the following steps:

[0077] The nonwoven fabric and the film material are stacked, and are sequentially subjected to the embossing treatment and the roll forming treatment to prepare the multifunctional nonwoven filter rod.

[0078] In some embodiments, the method further comprises a step of cutting the multifunctional nonwoven filter rod after the roll forming treatment.

[0079] In some embodiments, the method for preparing the multifunctional nonwoven filter rod comprises the following steps: the film material is attached to the forming paper, and a base material is prepared by a film coating process; the base material and the nonwoven fabric are stacked, and are sequentially subjected to the embossing treatment and the roll forming treatment to prepare the multifunctional nonwoven filter rod. In the base material, the side where the film material is attached is in contact with the nonwoven fabric.

[0080] In some specific embodiments, the film coating process comprises one or more of adhesion, extrusion, CVD, and PVD.

[0081] In some specific embodiments, during the embossing treatment, steps such as spraying, injecting a flavoring line, injecting a gel, or adding functional particles can be performed to achieve flavoring and moisture retention, tar reduction, and harm reduction.

[0082] In some embodiments, the film material is prepared by one or more of a flow casting method, an extrusion method, or a blow molding method.

[0083] In some embodiments, the nonwoven fabric is prepared by the following steps: sequentially performing mixing and opening, web forming, web laying, reinforcing, and drying.

[0084] In some embodiments, the embossing width of the embossing treatment is 0.5mm-5mm.

[0085] For example, the embossing width of the embossing treatment can be 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 2mm, 3mm, 4mm, 5mm, or any value within the range formed by any two of the above-mentioned values.

[0086] Some embodiments of the present application further provide a cigarette product comprising the multifunctional nonwoven filter rod as described above.

[0087] In some embodiments, the cigarette product comprises a tobacco segment and a filter segment, and the filter segment comprises the multifunctional nonwoven filter rod as described above.

[0088] In some embodiments, the filter segment can comprise a single filter rod or a multi-component filter rod. If a multi-component filter rod, one of the base rods is the multifunctional nonwoven material filter rod described above, and the other base rods can be one or more of acetate filter rods, polymer filter rods, paper filter rods, reconstituted tobacco filter rods, etc.

[0089] The application will be further described in conjunction with specific examples and comparative examples, but should not be construed as limiting the scope of protection of the application. The raw materials involved in the following specific examples, if not specifically stated, can be sourced from the market, and the instruments used, if not specifically stated, can be sourced from the market. The processes involved, if not specifically stated, are routinely selected by those skilled in the art.

[0090] Example 1

[0091] (1) Preparation of nonwoven fabric: 80wt% lyocell fiber and 20wt% wood pulp fiber were mixed, then hydrophobically modified by alkyl ketene dimer, mixed and opened, carded, sprayed and modified, cross-laid 5 layers, water-jet reinforced, and dried to obtain a nonwoven fabric with a basis weight of 38g / m 2 , a breaking strength of 28N, and a thickness of 220μm. It was slit into 105mm width and wound for use.

[0092] (2) Preparation of substrate: 50wt% polylactic acid film and 50wt% polybutylene adipate terephthalate film were laminated to prepare a film material with a thickness of 0.25mm by casting method; and a formed paper with a basis weight of 45g / m 2 was bonded with the composite film to prepare a substrate by composite extrusion. The substrate was slit into 100m width and wound for use.

[0093] (3) As shown in Figure 1 , on the filter rod forming machine, the nonwoven fabric roll and the substrate were respectively pulled by independent paper guide rollers to the embossing roller, and then passed through a corrugated embossing process with an embossing width of 0.9mm, and then rolled into a filter strip with a circumference of 20mm, and finally cut into multifunctional nonwoven material filter rods with a length of 120mm.

[0094] Example 2

[0095] It is basically the same as Example 1, except that the material of the nonwoven fabric is different, which is a single material nonwoven fabric. Specifically, the nonwoven material in Example 2 is prepared from 100wt% unmodified lyocell fiber, mixed and opened, carded, sprayed and modified, cross-laid 5 layers, water-jet reinforced, and dried to obtain.

[0096] Example 3

[0097] The same as example 1, the difference is only that the film material is different, which is a single material film; specifically, the film material in example 3 is made of 100wt% polylactic acid film with a thickness of 0.25mm, and the shaped paper with a basis weight of 45g / m 2 is bonded with the composite film, and the substrate is prepared by composite extrusion, and then the substrate is cut into a width of 100m and wound for use.

[0098] Comparative example 1

[0099] An acetate fiber filter rod with a circumference of 20mm and a length of 120mm is prepared by using acetate fiber tows.

[0100] Comparative example 2

[0101] 80wt% lyocell fibers and 20wt% wood pulp fibers are mixed, hydrophobically modified, mixed and opened, carded, sprayed and modified, cross-laid 5 layers, water-jet reinforced, and dried to obtain a nonwoven fabric with a basis weight of 38g / m 2 , a breaking strength of 28N, and a thickness of 220μm; an acetate fiber filter rod with a circumference of 20mm and a length of 120mm is prepared by using the above nonwoven fabric.

[0102] The filter rods prepared in the above examples and comparative examples are detected respectively, and the results are shown in table 1.

[0103] Table 1

[0104]

[0105] The filter rods prepared in the above examples and comparative examples are combined with tobacco segments to make cigarettes, wherein the length of the filter rod segment is 30mm and the length of the tobacco segment is 60mm; the cigarette smoke index data is analyzed, and the results are shown in table 2; the content of each substance in table 2 is calculated in units of a single cigarette.

[0106] Table 2

[0107]

[0108] From the above table, compared with comparative example 1, the harmful substances such as nicotine and tar of the filter rods prepared in the three examples of the present application are significantly reduced; compared with comparative example 2, the roundness and hardness of the filter rods prepared in the three examples are significantly improved. The above results show that the filter rods prepared in the present application not only retain the advantages of nonwoven material filter rods, but also improve the problem of insufficient support.

[0109] The average temperature of the mouth end of the filter rod was measured, and it was found that the average temperature of the mouth end of the filter rod prepared in Example 1 was 54℃, the average temperature of the mouth end of the filter rod prepared in Example 2 was 53℃, and the average temperature of the mouth end of the filter rod prepared in Example 3 was 56℃; compared with the filter rod of Comparative Example 1, the temperature reduction effect was obvious.

[0110] Meanwhile, through the soil landfill-weighing method degradation test, the results showed that the filter rods prepared in Examples 1-3 could be basically degraded within 30 days.

[0111] The technical features of the above-described embodiments can be combined arbitrarily, and to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the description.

[0112] The above-described embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it should not be understood as the limitation of the scope of the patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A multi-functional nonwoven material filter rod, characterized by, The nonwoven fabric is laminated and wound with a base material; The material of the nonwoven fabric comprises one or more of lyocell fiber, modal fiber, polylactic acid fiber, viscose fiber, hemp fiber and wood pulp fiber; The base material comprises a film material, and the film material comprises one or more of polylactic acid film, polyvinyl chloride film, polyethylene film, polypropylene film, polyethylene terephthalate film, polybutylene adipate / terephthalate film, cellulose acetate film, water-based coating film and metallized film.

2. The multi-functional nonwoven material filter rod of claim 1, wherein, The film material comprises a polylactic acid film and a polypropylene film arranged in layers.

3. The multi-functional nonwoven material filter rod of claim 1, wherein, The material of the nonwoven fabric comprises modified lyocell fiber, and a modifier for preparing the modified lyocell fiber is selected from one or more of alkyl ketene dimer, silicone resin, silicone oil, cellulose acetate and fatty acid derivative.

4. The multi-functional nonwoven material filter rod according to any one of claims 1 to 3, characterized in that, The nonwoven fabric has a basis weight of 10 g / m 2 100 g / m 2 ; and / or, The width of the nonwoven fabric is 50mm-200mm; and / or, The thickness of the nonwoven fabric is 0.05mm-1mm.

5. The multi-functional nonwoven material filter rod according to any one of claims 1 to 3, characterized in that, The film material has a basis weight of 10 g / m 2 500 g / m 2 ; and / or, The width of the film material is 50mm-200mm; and / or, The thickness of the film material is 0.05mm-1mm.

6. The multi-functional nonwoven material filter rod according to any one of claims 1 to 3, wherein The base material further comprises a shaped paper arranged on the outer side of the film material.

7. The multi-functional nonwoven material filter rod according to any one of claims 1 to 3, wherein The circumference of the multifunctional nonwoven material filter rod is 14mm-28mm; and / or, The length of the multifunctional nonwoven material filter rod is 5mm-60mm.

8. A method of making a multi-functional nonwoven material filter rod as claimed in any one of claims 1 to 7, characterised in that, The method comprises the following steps: The nonwoven fabric is laminated with the film material, and then subjected to embossing treatment and roll forming treatment to prepare the multifunctional nonwoven material filter rod.

9. The method of making a multi-functional nonwoven material filter rod according to claim 8, wherein, The film material is prepared by one or more of casting method, extrusion method or blow molding method; and / or, The embossing width of the embossing treatment is 0.5mm-5mm.

10. A smoking article, characterized in that, The multifunctional nonwoven material filter rod of any one of claims 1-7 is included.

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