Composite embossed cigarette paper capable of forming embossed combustion chamber, cigarette and preparation method of composite embossed cigarette paper

Abstract

The invention belongs to the technical field of cigarettes, and particularly relates to composite embossed cigarette paper capable of forming an embossed combustion chamber, a cigarette and a preparation method of the composite embossed cigarette paper. The composite embossed cigarette paper comprises a cigarette paper main body and a supporting layer, wherein embossed patterns are formed on the cigarette paper main body; the supporting layer is provided with embossing or not provided with embossing, a combustion chamber is formed in a space between the embossing of the supporting layer and a to-be-wrapped fuming material of the composite embossed cigarette paper, or a combustion chamber is formed between the embossing of the cigarette paper main body and the supporting layer; or a combustion chamber is formed between the two supporting layers, or a combustion chamber is formed in a space between the embossing of the cigarette paper main body and a to-be-wrapped fuming material. According to the method, the quality problems of hidden paper cracks, cigarette air leakage and the like caused by the fact that the fiber structure of the cigarette paper is damaged by mechanical force during pattern imprinting can be avoided; a'combustion chamber 'structure can be constructed on the surface of the cigarette, tobacco shreds are promoted to be combusted more sufficiently, and richer and more layered aroma substances and taste are obtained.

Description

Technical Field

[0001] This application belongs to the field of cigarette technology, and specifically relates to a composite embossed cigarette paper capable of forming an embossed combustion chamber, cigarettes, and a method for preparing the same. Background Technology

[0002] In the field of tobacco technology, conventional cigarette paper embossing technology involves embossing patterns onto a single layer of cigarette paper, cutting it into strips of a specified width, and then rolling it into a disc for later use. In application, adhesives are used to wrap the tobacco shreds to create tobacco strips, which are then combined with filter rods, tipping paper, and adhesives to produce a complete cigarette.

[0003] Building upon conventional techniques, those skilled in the art have made numerous attempts to obtain cigarette paper with a strong tactile feel. Examples include patent application CN200810099498.6 (patent title: tactile embossed cigarette wrapping material and processing method); and application CN03802901.4 (patent title: cigarettes), etc. However, due to inherent technical defects, no similar products are currently available on the market, primarily because of the following technical limitations:

[0004] I. Existing technologies for cigarette wrapping materials require the use of mechanical force to disrupt the microfiber structure of the material's surface, creating an embossed texture. This leads to quality issues such as fiber breakage and paper cracks, resulting in cigarette leaks and aesthetically unappealing defects. Furthermore, these issues are often difficult to detect visually, increasing the technical complexity of quality control and production costs. This is the primary reason why similar products have not yet been commercialized due to the inherent hidden quality problems of existing technologies.

[0005] Second, the depth of embossed patterns produced by existing technologies cannot exceed 50 micrometers. To allow for compromise in situations where cigarette paper exhibits minor cracks or damage, existing technologies can only require the embossed pattern depth to not exceed 50 micrometers. Therefore, existing technologies are simply incapable of meeting technical requirements for embossed patterns exceeding 50 micrometers in depth.

[0006] Third, existing technologies cannot solve the quality problems of embossed patterns, such as deformation, weakening, crushing, and disappearance, that occur in cigarette paper with an embossing depth exceeding 50 micrometers during the slitting, rolling, storage, transportation, and tobacco wrapping stages. Existing technologies do not consider the complex stress conditions that occur on the embossed pattern after its production and before its successful application to cigarettes, leading to deformation, weakening, crushing, and disappearance of the embossed pattern. This is one of the main reasons why similar products have not yet been commercialized. In particular, during slitting, rolling, storage, transportation, and tobacco wrapping, cigarette paper needs to withstand different stresses, including longitudinal tension, pressure, and lateral tension. Without the support layer to provide solidification and cushioning, once the embossed pattern depth exceeds 50 micrometers (approximately one-third of the cigarette paper's thickness), the embossed pattern is highly susceptible to deformation, weakening, crushing, and disappearance. Consequently, the embossing effect cannot be maintained for 6 months or more in a storage environment.

[0007] Fourth, existing technologies cannot provide any beneficial assistance in increasing complete combustion or reducing incomplete combustion. Current cigarette paper or cigarette wrapping materials are always tightly bonded to the tobacco or other smoking materials, thus lacking any technical means to further increase oxygen supply or pre-mix the tobacco with oxygen. The embossing depth of existing cigarette paper is 5-50 micrometers, and the thickness of cigarette paper is generally around 150 micrometers (0.15 mm). This means the embossing depth can barely reach about one-third of the cigarette paper thickness. Furthermore, the width of tobacco is 0.8 mm-3.0 mm, and it is elastic. The tight bond between the cigarette paper and tobacco prevents an increase in the surface area of ​​the cigarette paper, and there is no space between them. This significantly inhibits oxygen supply and mixing, preventing the tobacco or smoking materials from achieving the beneficial effects of improved smoking quality or flavor, increased aroma production, or reduced tar through increased complete combustion or reduced incomplete combustion.

[0008] This application is submitted in order to address the above issues. Summary of the Invention

[0009] The purpose of this application is to address the shortcomings of existing cigarette paper technology by providing a cigarette paper capable of forming an embossed combustion chamber, along with its manufacturing and application methods, while adhering to existing technological processes. This allows the cigarette paper, when applied to cigarette products, to not only retain the functions of wrapping the smoking material and identifying the product visually and / or tactilely, but also to achieve various additional beneficial effects in multiple directions. These include, but are not limited to: avoiding quality problems such as hidden paper cracks and cigarette leakage caused by mechanical damage to the cigarette paper fiber structure during embossing; solving quality problems caused by the crushing or deformation of the embossed pattern during manufacturing, storage, transportation, and use; and constructing a "combustion chamber" structure on the cigarette surface. Compared to existing technologies, this structure not only increases the cigarette surface area and the amount of oxygen passing through the cigarette paper, but also allows for pre-mixing of oxygen and tobacco before combustion, promoting more complete combustion of the tobacco and resulting in richer, more layered aroma substances and flavors, significantly improving product quality.

[0010] The first aspect of this application provides a composite embossed cigarette paper capable of forming an embossed combustion chamber, the composite embossed cigarette paper comprising: a cigarette paper body having embossing on the cigarette paper body;

[0011] The structure of the composite embossed cigarette paper is selected from one of the following structures:

[0012] Structure A: The inner surface of the composite embossed cigarette paper has no support layer, the embossing depth on the main body of the cigarette paper is more than 50 mm, and the space between the main body of the cigarette paper and the smoking material to be wrapped by the composite embossed cigarette paper forms an embossed combustion chamber; at this time, the composite embossed cigarette paper is the main body of the cigarette paper.

[0013] Structure B1: The inner surface of the composite embossed cigarette paper has a support layer, the support layer also has embossing, and the space between the embossing of the support layer and the smoke-generating material to be wrapped by the composite embossed cigarette paper forms an embossed combustion chamber.

[0014] Structure B2: The inner surface of the composite embossed cigarette paper has a support layer, the support layer has no embossing, and the space between the embossing of the main body of the cigarette paper and the support layer forms an embossed combustion chamber;

[0015] Structure B3: The inner surface of the composite embossed cigarette paper has a support layer. The support layer includes a first support layer and a second support layer arranged sequentially from near to far from the inner surface of the cigarette paper body. The first support layer has embossing, while the second support layer does not have embossing. The space between the embossing of the first support layer and the second support layer forms an embossed combustion chamber.

[0016] Structure B4: The outer surface of the composite embossed cigarette paper has a support layer, the support layer has embossing, and the space between the embossing of the main body of the cigarette paper and the smoke-generating material to be wrapped forms a relief-shaped combustion chamber.

[0017] The embossing is one or more spaced apart. Correspondingly, the relief-shaped combustion chamber is one or more spaced apart.

[0018] Preferably, the support layer and the first support layer are independently selected from: a calcium carbonate mixture layer or a paper layer;

[0019] The second support layer is a paper layer. This paper layer can be thin paper, cigarette forming paper, etc.

[0020] Preferably, the calcium carbonate mixture layer contains, in addition to calcium carbonate, plant fiber powder and / or adhesive;

[0021] The adhesive is selected from one or both of latex and guar gum.

[0022] Preferably, the paper layer and the cigarette paper body contain or do not contain an adhesive. A second aspect of this application provides a cigarette with an embossed combustion chamber, the cigarette comprising a composite embossed cigarette paper of the first aspect and a smoke-generating material wrapped within the composite embossed cigarette paper.

[0023] A third aspect of this application provides a method for preparing the composite embossed cigarette paper capable of forming an embossed combustion chamber as described in the first aspect, the method comprising the following steps:

[0024] The method for preparing the composite embossed cigarette paper of structure A includes the following steps:

[0025] A support layer is provided on the inner and / or outer surfaces of the cigarette paper body, and then embossing is performed on the cigarette paper body and the support layer, with the embossing depth being more than 50 mm. In this way, at least the cigarette paper body is left with embossing. The support layer is removed to obtain the composite embossed cigarette paper of structure A.

[0026] The method for preparing the composite embossed cigarette paper with structure B1 includes the following steps:

[0027] A support layer is provided on the inner surface of the cigarette paper body, and then embossing is done on the cigarette paper body and the support layer. Thus, embossing is left on both the cigarette paper body and the support layer. The cigarette paper body and the support layer as a whole form a composite embossed cigarette paper. The space between the embossing of the support layer and the smoke-generating material to be wrapped by the embossed cigarette paper forms a relief-shaped combustion chamber.

[0028] The method for preparing cigarette paper with structure B2 includes the following steps:

[0029] A support layer is provided on the inner surface of the cigarette paper body, and then embossing is performed on the cigarette paper and the support layer. The embossing is left on the cigarette paper, and the support layer rebounds without leaving any embossing. The cigarette paper body and the support layer as a whole form a composite embossed cigarette paper. The space between the embossing of the cigarette paper body and the support layer forms an embossed combustion chamber.

[0030] The method for preparing cigarette paper with structure B3 is as follows:

[0031] A first support layer is provided on the inner surface of the cigarette paper body, and then embossing is done on the cigarette paper body and the first support layer, so that embossing is left on both the cigarette paper body and the first support layer.

[0032] Then, a second support layer is set on the inner surface of the first support layer. Then, embossing is done on the cigarette paper body and the first and second support layers. The second support layer rebounds without leaving any embossing. The cigarette paper body and the first and second support layers are integrally formed into a composite embossed cigarette paper. The space between the embossing of the first support layer and the second support layer forms an embossed combustion chamber.

[0033] The method for preparing the composite embossed cigarette paper with structure B4 includes the following steps:

[0034] A support layer is provided on the outer surface of the cigarette paper body, and then embossing is done on the support layer and the cigarette paper body. Thus, embossing is left on both the cigarette paper and the support layer. The cigarette paper body and the support layer as a whole form a composite embossed cigarette paper. The space between the embossing of the cigarette paper body and the smoke-generating material to be wrapped forms a relief-shaped combustion chamber.

[0035] Preferably, when the support layer or the second support layer springs back without leaving any embossing after embossing, the support layer or the second support layer is a paper layer. Furthermore, this paper layer does not contain any adhesive between itself and the cigarette paper body.

[0036] Preferably, the embossing location is the inner or outer surface of the object to be embossed, and the embossing area is the entire area or a partial area of ​​the object to be embossed.

[0037] Preferably, the steps of setting the support layer, setting the first support layer, setting the second support layer, and embossing are performed once or multiple times.

[0038] Preferably, the area where the support layer and the first support layer are disposed is the entire area or a partial area of ​​the corresponding surface of the cigarette paper body.

[0039] Preferably, the area where the second support layer is disposed is the entire area or a partial area of ​​the inner surface of the first support layer.

[0040] Preferably, the preparation method further includes a slitting and winding step: the obtained composite embossed cigarette paper is slitted into strips of a specified width, and after peeling or not peeling the support layer, the first support layer or the second support layer, it is wound into a disc-shaped composite embossed cigarette paper for later use.

[0041] Preferably, the support layer, the first support layer, or the second support layer are not peeled off when the embossed pattern is wound up for later use, so as to provide support during the cutting, winding, storage and transportation processes, and to avoid quality problems such as deformation, weakening, crushing and disappearance of the embossed pattern during the above processes.

[0042] The fourth aspect of this application provides a method for preparing a cigarette with an embossed combustion chamber as described in the second aspect, the method comprising the following steps:

[0043] When the structure of the composite embossed cigarette paper is structure A, the composite embossed cigarette paper is used to wrap the smoking material and is combined with an adhesive to prepare a cigarette bar; then the cigarette bar is cut, a filter rod is attached, and it is cut again to obtain cigarettes.

[0044] When the structure of the composite embossed cigarette paper is structure B1, structure B2, structure B3 or structure B4, after peeling off or not peeling off the support layer, a composite embossed cigarette paper with an embossed combustion chamber is obtained. The composite embossed cigarette paper is used to wrap the smoking material and is combined with an adhesive to prepare a cigarette bar. Then the cigarette bar is cut, a filter rod is attached, and it is cut again to obtain cigarettes.

[0045] Preferably, when the support layer is a calcium carbonate mixture layer, the support layer is not peeled off. When the support layer is a paper layer, if there is no adhesive between the paper layer and the cigarette paper body, the support layer is peeled off; if there is adhesive between the paper layer and the cigarette paper body, the support layer is not peeled off. The above method also applies to the first support layer or the second support layer.

[0046] Compared with existing technologies, this invention, through ingenious design, not only achieves greater embossing depth, but also adds several beneficial effects on top of basic functions such as wrapping smoke-generating materials and identifying products using visual and / or tactile senses, as follows:

[0047] (1) This invention can avoid a series of hidden quality problems such as paper cracks caused by mechanical damage to the microfiber structure on the surface of cigarette paper. In particular, it solves the above-mentioned quality problems by relying on the buffering, reinforcement, fixing and fiber dispersion effects provided by the support layer.

[0048] Specifically, when the support layer is a calcium carbonate mixture layer: the calcium carbonate in the support layer acts as a medium and / or structural reinforcement material that absorbs mechanical forces during plastic deformation, suppressing deformation rebound and / or reinforcing the structure, preventing or reducing fiber breakage and damage; the guar gum or latex in the support layer further disperses the paper fibers in the stress area along the direction of force, slowing down fiber breakage. In a preferred embodiment, the calcium carbonate mixture layer also contains finely powdered plant fibers. These finely powdered plant fibers in the support layer act as a buffer medium and / or structural reinforcement material for the cigarette paper to withstand embossing mechanical forces, preventing shear effects due to concentrated stress and preventing the cigarette paper from being shredded, torn, or crushed.

[0049] When the support layer is a paper layer, the paper layer is used as a buffer medium and / or structural reinforcement material to withstand the mechanical force of embossing on the cigarette paper, so as to avoid shearing effect due to force concentration and prevent the cigarette paper from being cut, torn or crushed.

[0050] (2) The present invention can produce embossed patterns with a depth far exceeding 50 micrometers and ensure that the product quality remains stable.

[0051] (3) The present invention fully considers the actual stress of cigarette paper in the process of cutting, rolling, storage and transportation, and wrapping tobacco. It focuses on cigarette paper with embossed patterns deeper than 50 micrometers. By utilizing the buffering, reinforcement, solidification and fiber dispersion provided by the support layer, it effectively avoids quality problems such as deformation, weakening, crushing and disappearance of embossed patterns in the above-mentioned processes.

[0052] When the support layer is a mixture of calcium carbonate materials: the calcium carbonate in the support layer serves as a medium that can absorb mechanical forces during plastic deformation and / or a structural reinforcement material, playing a role in inhibiting deformation rebound and / or structural reinforcement, thus avoiding quality problems such as deformation, weakening, or disappearance of the embossed pattern during the cutting and wrapping of tobacco shreds due to tension or strain.

[0053] In the preferred technical solution, the calcium carbonate mixture layer also contains finely powdered plant fibers. The finely powdered plant fibers in the support layer serve as a buffer medium and / or structural reinforcement material for the cigarette paper to withstand the winding pressure, preventing quality problems such as deformation, weakening, crushing, or disappearance of the embossed pattern due to pressure during winding, storage, and transportation.

[0054] When the support layer is a paper layer, the paper layer is used as a buffer medium for the cigarette paper to withstand the winding pressure, and / or as a structural reinforcement material, to avoid quality problems such as deformation, weakening, crushing, and disappearance of the embossed pattern caused by pressure during winding, storage and transportation.

[0055] (4) The present invention can provide very helpful assistance in increasing complete combustion and reducing incomplete combustion. The cigarette paper or cigarette wrapping material made using the present invention can maintain a greater depth and larger spatial size of plastic deformation, so that when wrapping the smoking material, it is not affected by factors such as shallow embossing pattern depth, tobacco shred size, and large elastic deformation range. It can reserve a stable spatial distance between the cigarette paper and the smoking material, construct a combustion chamber structure to support the generation of more complete combustion effect and reduce incomplete combustion.

[0056] This invention helps tobacco to mix more thoroughly with oxygen before combustion; on the other hand, it increases the surface area of ​​cigarette paper, allowing for greater oxygen flow. This increases the complete combustion of tobacco and reduces incomplete combustion, resulting in richer and more layered aromas and flavors, significantly improving the smoking quality. It also helps reduce harmful substances produced by incomplete combustion, such as tar and carbon monoxide.

[0057] (5) This invention can create differentiated product features in terms of visual and / or tactile perception, providing highly effective assistance for repeat purchases. Cigarette paper or cigarette wrapping materials made using this invention exhibit a visually striking, relief-like effect resembling "ornamental columns" or "Roman columns" on their surface, such as... Figure 11 , Figure 12 As shown. Furthermore, after the tobacco is wrapped in this cigarette paper, and combined with tipping paper, filter rod, and adhesive to create a complete cigarette, this cigarette can be clearly and accurately identified by touch alone in a microscopic or dark environment, making it an important reference for repeat purchases of this product.

[0058] (6) The anti-counterfeiting effect of this application is significant and can be easily identified. While protecting the legitimate rights and interests of consumers, it can also promote the normal development of the cigarette industry. Attached Figure Description

[0059] Figure 1 This is a schematic diagram of the structure of a longer cigarette 14 according to Embodiment 1 of the present invention;

[0060] Figure 2 This is a partially enlarged cross-sectional view of a cigarette 14 of one length according to Embodiment 1 of the present invention;

[0061] Figure 3 This is a partially enlarged cross-sectional view of a cigarette 14 of one length, according to Embodiment 2 of the present invention;

[0062] Figure 4 This is a partially enlarged cross-sectional view of a cigarette 14 of one length, as described in Embodiment 3 of the present invention.

[0063] Figure 5 This is a partially enlarged cross-sectional view of a cigarette 14 of one length, according to Embodiment 4 of the present invention;

[0064] Figure 6 This is a schematic diagram of the cigarette structure in Comparative Example 1;

[0065] Figure 7 This is a partially enlarged schematic diagram of the cross-section of a cigarette in Comparative Example 1.

[0066] Figure 8 This is a schematic diagram of the application process of the present invention without peeling off the support layer 2;

[0067] Figure 9 This is a schematic diagram of the application process of the peeling support layer 2 of the present invention;

[0068] Figure 10 This is a schematic diagram of the application process of Comparative Example 1;

[0069] Figure 11 This is a schematic diagram of a cigarette with a similar "Huabiao" relief effect to the present invention;

[0070] Figure 12 This is a schematic diagram of a cigarette with a similar "Roman column" relief effect to the present invention;

[0071] Figure 13 This is a partially enlarged schematic diagram of the cross-section of a cigarette stick 14 of one length, as described in Embodiment 5 of the present invention.

[0072] List of reference numerals in the attached diagram:

[0073] 1. Cigarette paper body; 2. Support layer; 2-1. First support layer; 2-2. Second support layer; 3. Smoke-generating material; 4. Embossed combustion chamber; 5. Comparative example 1 embossed cigarette paper; 6. One-length tipping paper; 6-2. Two-length tipping paper; 7-1. Two-length filter rod; 8. Cigarette stick; 9. Two-length cigarette stick; 9-1. One-length cigarette stick; 12. First slitting cutter; 13. Two-length cigarette stick; 14. One-length cigarette stick; 15. Second slitting cutter; 16. Third slitting cutter. Detailed Implementation

[0074] The present application will now be described in further detail with reference to the embodiments.

[0075] Those skilled in the art will understand that the following embodiments are for illustrative purposes only and should not be construed as limiting the scope of this application. Where specific techniques or conditions are not specified in the embodiments, they are performed in accordance with the techniques or conditions described in the literature in the field or according to the product manual. Materials or equipment whose manufacturers are not specified are all conventional products that can be obtained by purchase.

[0076] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. In the description of this application, unless otherwise stated, “a plurality” means two or more. It should be further understood that the term “comprising” as used in the specification of this application means the presence of the stated feature, integer, step, operation, element, and / or component, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is “connected” to another element, it can be directly connected to the other element, or there may be an intermediate element. Furthermore, the term “connected” as used herein can include wireless connections.

[0077] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0078] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0079] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0080] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0081] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0082] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the meaning consistent with their meaning in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless defined as herein.

[0083] This invention discloses a composite embossed cigarette paper capable of forming an embossed combustion chamber 4, and its manufacturing and application methods. After setting a support layer 2 in a designated area of ​​the cigarette paper, an embossing process is applied to a specific area of ​​the cigarette paper, creating a tactile, embossed-like texture on the cigarette paper, ensuring that the cigarette paper will not develop quality problems such as cracks or breaks. The embossing depth is 1–600 micrometers or deeper. Preferably, the embossing depth is 55–300 micrometers.

[0084] The support layer 2 refers to a material layer formed by fixing a material with or without adhesives to a designated position on cigarette paper. These functions include, but are not limited to: preventing paper breakage during embossing of patterns on cigarette paper and improving the processing resistance of paper fibers under pressure; ensuring the plastic deformation of the embossed pattern remains stable during preparation, storage, and application, preventing crushing or deformation; and not negatively affecting the smoking flavor during combustion.

[0085] Specifically, the support layer 2 includes, but is not limited to, one or more of the following materials: calcium carbonate, latex, guar gum, finely powdered plant fibers, tissue paper coated with fragrance or cigarette paper. Preferably, the support layer 2 is a material layer formed by coating or bonding a mixture of calcium carbonate, latex, and guar gum onto the cigarette paper. Alternatively, it is more preferably a material layer formed by depositing one or more layers of fragrance-coated tissue paper on the inner wall of the cigarette paper without using adhesives.

[0086] The designated area refers to the fact that the support layer 2 can be disposed on the inner wall of the cigarette paper that is in contact with the smoking material 3, or on the outer surface of the cigarette paper that is not in contact with the smoking material 3, or simultaneously on both the inner and outer surfaces of the cigarette paper. The area of ​​the support layer 2 can be the entire area of ​​the inner wall and / or outer surface of the cigarette paper, or a partial area of ​​the inner wall and / or outer surface of the cigarette paper. Preferably, the support layer 2 is disposed on a partial area of ​​the inner wall of the cigarette paper.

[0087] The specific area refers to the area on which the embossing process can be applied, either to the inner wall of the cigarette paper that is in contact with the smoking material, or to the outer surface of the cigarette paper that is not in contact with the smoking material, or simultaneously to both the inner and outer surfaces. The area used for embossing can be the entire area of ​​the inner wall and / or outer surface of the cigarette paper, or a partial area. Preferably, the embossing process is applied to a partial area of ​​the outer surface of the cigarette paper.

[0088] Another object of the present invention is to disclose a method for manufacturing composite embossed cigarette paper capable of forming an embossed combustion chamber 4, comprising the following steps:

[0089] 1. Add support layer 2: Add support layer 2 to the designated area on the cigarette paper body 1.

[0090] 2. Embossing: Patterns are embossed on a specific area of ​​the cigarette paper body 1 in step 1. During the embossing process, the support layer 2 provides support.

[0091] 3. Depending on the actual needs of the relief effect, repeat or not repeat steps 1 and 2.

[0092] 4. Slitting and winding: The cigarette paper body 1 obtained in step 3 is slitted into long strips of a specified width. After peeling off or not peeling off the support layer 2, it is wound into a disc-shaped composite embossed cigarette paper for later use.

[0093] The third objective of this invention is to disclose a method for preparing a cigarette with an embossed combustion chamber 4, the method comprising the following steps:

[0094] 1. Wrapping: After peeling or not peeling off the support layer 2, wrap the smoking material 3, such as tobacco, with composite embossed cigarette paper with an embossed combustion chamber 4, and then prepare the cigarette stick 8 with adhesive.

[0095] 2. Cutting: Cut the tobacco strip 8 from step 1 into tobacco strips 9 that are twice the length.

[0096] 3. Fitting: After cutting the twice-long cigarette stick 9 from the center position in step 2, insert the twice-long filter rod 7-1 in the middle, and then wrap it with twice-long fitting paper 6-2 and adhesive to prepare the twice-long cigarette stick 13.

[0097] 4. Further cutting: Cut the twice-length cigarette 13 from the center to obtain two complete cigarettes, namely, one-length cigarettes 14. Each complete cigarette contains a one-length cigarette pack 9-1, a one-length filter rod, and a one-length splicing paper 6.

[0098] To enable those skilled in the art to better understand and implement the patent described herein, the following five specific embodiments are provided. Unless otherwise specified, all percentage values ​​listed are mass percentages.

[0099] Example 1

[0100] Production of composite embossed cigarette paper:

[0101] 1. Adding Support Layer 2: Support layer 2 is added adhesively to the inner wall of regular cigarette paper in areas requiring pressure resistance. Support layer 2 is a mixture containing calcium carbonate, guar gum, and finely powdered plant fibers. Support layer 2 has a thickness of 75 micrometers. The regular cigarette paper has a basis weight of 32 grams per square meter, an air permeability of 60 CU, and a thickness of 150 micrometers. (See also...) Figure 2 .

[0102] The method for adding support layer 2 is as follows: Calcium carbonate, guar gum, finely powdered plant fiber, and water are uniformly mixed in a mass ratio of 60:10:20:10 to obtain a slurry. This slurry is then uniformly coated onto the inner wall of conventional cigarette paper to a thickness of 75 micrometers and dried at 120 degrees Celsius for 0.5 hours to obtain support layer 2.

[0103] 2. Embossing: On the inner wall of conventional cigarette paper with the support layer 2 bonded thereto, a pattern with a width A of 660 micrometers and a depth H of 180 micrometers is embossed, with a spacing B of 300 micrometers between the embossed patterns. The cross-section formed by the embossed patterns is as follows: Figure 2 As shown. Conventional cigarette paper is prepared to form the main body of cigarette paper 1.

[0104] 3. Based on the embossed effect: Steps 1 and 2 are not repeated. The cigarette paper body 1 and the support layer 2 together form a composite embossed cigarette paper.

[0105] 4. Slitting and winding: The prepared composite embossed cigarette paper is slid into strips with a width of 26.2mm. The composite embossed cigarette paper is then wound into discs for storage, transportation and use without peeling off the support layer 2.

[0106] The structure of the above-mentioned composite embossed cigarette paper is structure B1: the inner surface of the composite embossed cigarette paper has a support layer 2, the support layer 2 also has embossing, and the space between the embossing of the support layer 2 and the smoke-generating material 3 to be wrapped by the composite embossed cigarette paper forms an embossed combustion chamber 4.

[0107] Applications of composite embossed cigarette paper:

[0108] 5. Wrapping: The smoking material 3, such as tobacco, is wrapped in composite embossed cigarette paper with an embossed combustion chamber 4 without peeling off the support layer 2. Then, an adhesive is used to prepare a cigarette strip 8 with a circumference of 24.2 mm. Figure 8 As shown.

[0109] 6. Slitting: Using the first slitting cutter 12, cut the tobacco strip 8 from the previous step into tobacco strips 9 that are twice the length. The length of the twice-length tobacco strip 9 is 108mm. (Example...) Figure 8 As shown.

[0110] 7. Splicing: Using the second slitting cutter 15, cut the double-length cigarette stick 9 from the previous step at the center position to obtain two single-length cigarette sticks 9-1, each 54mm in length. Insert a double-length filter rod 7-1 between the two single-length cigarette sticks 9-1, then wrap them together using double-length splicing paper 6-2 and adhesive to prepare a double-length cigarette 13. The double-length filter rod 7-1 is 60mm long, the double-length splicing paper 6-2 is 70mm long, and the double-length cigarette 13 is 168mm long. Figure 8 As shown.

[0111] 8. Further Cutting: Using the third cutting blade 16, cut the double-length cigarette 13 from the previous step in half from the center, resulting in two complete single-length cigarettes 14. Each single-length cigarette 14 is 84mm long and has a circumference of 24.2mm. Each complete single-length cigarette 14 contains a single-length cigarette bar 9-1, a single-length filter rod, and a single-length tipping paper 6. Specifically, the single-length cigarette bar 9-1 is 54mm long, the single-length filter rod is 30mm long, and the single-length tipping paper 6 is 35mm long. Figure 8 As shown in the diagram. A schematic diagram of a cigarette of 14 times its original length is shown below. Figure 1 As shown in the enlarged view of the cross-sectional structure of a cigarette of one length (14mm), a partial view is shown below. Figure 2 As shown.

[0112] Example 2

[0113] Production of composite embossed cigarette paper:

[0114] 1. Adding Support Layer 2: Support layer 2 is added to the entire inner wall of regular cigarette paper without the use of adhesives. Support layer 2 is a highly permeable, low-filler forming paper with a basis weight of 21 g / m², an air permeability of 10000 CU, and a thickness of 100 micrometers. A citric acid solution with a pH of 6.5 is coated onto the forming paper at a coating amount of 3 g / m². The regular cigarette paper has a basis weight of 30 g / m², an air permeability of 60 CU, and a thickness of 150 micrometers. See also... Figure 3 .

[0115] 2. Embossing: On the inner wall of conventional cigarette paper with added support layer 2, a pattern with a width A of 660 micrometers and a depth H of 100 micrometers is embossed, and the spacing B between the embossed patterns is 300 micrometers. The cross-section formed by the embossed patterns is as follows: Figure 3 As shown. Conventional cigarette paper is prepared to form the main body of cigarette paper 1.

[0116] 3. Judging from the embossed effect: Because the support layer 2 has a strong buffering effect and high resilience, step 2 needs to be repeated once to ensure that the depth H of the embossed pattern finally reaches 200 micrometers. The cigarette paper body 1 and the support layer 2 together form a composite embossed cigarette paper.

[0117] 4. Slitting and winding: The prepared composite embossed cigarette paper is slid into strips with a width of 26.2mm. The composite embossed cigarette paper is then wound into discs for storage, transportation and use without peeling off the support layer 2.

[0118] The structure of the composite embossed cigarette paper is structure B2: the inner surface of the composite embossed cigarette paper has a support layer 2, the support layer 2 has no embossing, and the space between the embossing of the cigarette paper body 1 and the support layer 2 forms a relief-shaped combustion chamber 4.

[0119] Applications of cigarette paper:

[0120] 5. Wrapping: The smoking material 3, such as tobacco, is wrapped in composite embossed cigarette paper with an embossed combustion chamber 4 without peeling off the support layer 2. Then, an adhesive is used to prepare a cigarette strip 8 with a circumference of 24.2 mm. Figure 8 As shown.

[0121] 6. Slitting: Using the first slitting cutter 12, cut the tobacco strip 8 from the previous step into tobacco strips 9 that are twice the length. The length of the twice-length tobacco strip 9 is 108mm. (Example...) Figure 8 As shown.

[0122] 7. Splicing: Using the second slitting cutter 15, cut the double-length cigarette stick 9 from the previous step at the center position to obtain two single-length cigarette sticks 9-1, each 54mm in length. Insert a double-length filter rod 7-1 between the two single-length cigarette sticks 9-1, then wrap them together using double-length splicing paper 6-2 and adhesive to prepare a double-length cigarette 13. The double-length filter rod 7-1 is 60mm long, the double-length splicing paper 6-2 is 70mm long, and the double-length cigarette 13 is 168mm long. Figure 8 As shown.

[0123] 8. Further Cutting: Using the third cutting blade 16, cut the double-length cigarette 13 from the previous step at the center to obtain two complete single-length cigarettes 14. The single-length cigarette 14 is 84mm long and has a circumference of 24.2mm. Each complete single-length cigarette 14 includes a single-length cigarette bar 9-1, a single-length filter rod, and a single-length tipping paper 6. The single-length cigarette bar 9-1 is 54mm long, the single-length filter rod is 30mm long, and the single-length tipping paper 6 is 35mm long. Figure 8 As shown. A schematic diagram of a cigarette of one length (14), as shown. Figure 1 As shown in the enlarged view of the cross-sectional structure of a cigarette of one length (14), as shown in the image. Figure 3 As shown.

[0124] Example 3

[0125] Production of composite embossed cigarette paper:

[0126] 1. Adding Support Layer 2: Support layer 2 is added to the entire inner wall of regular cigarette paper without the use of adhesive. Support layer 2 is a thin sheet of paper with a basis weight of 30 grams per square meter and a thickness of 100 micrometers. The regular cigarette paper has a basis weight of 36 grams per square meter, an air permeability of 60 CU, and a thickness of 150 micrometers. See also... Figure 4 .

[0127] 2. Embossing: Patterns with a width A of 660 micrometers and a depth H of 100 micrometers are embossed on both the outer surface of regular cigarette paper and the inner wall with added support layer 2. The spacing B between the embossed patterns is 300 micrometers. The cross-section formed by the embossed patterns is referenced. Figure 4 .

[0128] 3. Based on the embossed effect: Steps 1 and 2 are not repeated. Conventional cigarette paper is prepared to form the cigarette paper body 1. The cigarette paper body 1 and the support layer 2 together form a composite embossed cigarette paper.

[0129] 4. Slitting and winding: The prepared composite embossed cigarette paper is slid into strips with a width of 22mm. The composite embossed cigarette paper is then wound into discs for storage, transportation and use without peeling off the support layer 2.

[0130] Applications of composite embossed cigarette paper:

[0131] 5. Wrapping: After peeling off the support layer 2, the smoking material 3, such as tobacco, is wrapped with composite embossed cigarette paper having an embossed combustion chamber 4, and then an adhesive is used to prepare the cigarette strip 8, which has a circumference of 20mm; Figure 9 As shown.

[0132] After the support layer 2 is removed, the structure of the composite embossed cigarette paper is structure A: the inner surface of the composite embossed cigarette paper does not have the support layer 2, the depth of the embossing on the main body of the cigarette paper 1 is more than 50 mm, and the space between the embossing on the main body of the cigarette paper 1 and the smoke-generating material 3 to be wrapped by the composite embossed cigarette paper forms a relief-shaped combustion chamber 4.

[0133] 6. Slitting: Using the first slitting cutter 12, cut the tobacco strip 8 from the previous step into tobacco strips 9 that are twice the length. The length of the twice-length tobacco strip 9 is 116mm. (Example...) Figure 9 As shown.

[0134] 7. Splicing: Using the second slitting cutter 15, cut the double-length cigarette stick 9 from the previous step at the center position to obtain two single-length cigarette sticks 9-1. The single-length cigarette stick 9-1 is 58mm long. Insert a double-length filter rod 7-1 between the two single-length cigarette sticks 9-1, and then wrap them together using double-length splicing paper 6-2 and adhesive to prepare a double-length cigarette 13. The double-length filter rod 7-1 is 60mm long, the double-length splicing paper 6-2 is 76mm long, and the double-length cigarette 13 is 176mm long. Figure 9 As shown.

[0135] 8. Further Cutting: Using the third cutting blade 16, cut the double-length cigarette 13 from the previous step in half from the center, resulting in two complete single-length cigarettes 14. Each single-length cigarette 14 is 88mm long and has a circumference of 20mm. Each complete single-length cigarette 14 includes a single-length cigarette bar 9-1, a single-length filter rod, and a single-length tipping paper 6. The single-length cigarette bar 9-1 is 58mm long, the single-length filter rod is 30mm long, and the single-length tipping paper 6 is 38mm long. Figure 9 As shown. A schematic diagram of a cigarette of one length (14), as shown. Figure 11 As shown in the enlarged view of the cross-sectional structure of a cigarette of one length (14), as shown in the image. Figure 4 As shown.

[0136] Example 4

[0137] Production of composite embossed cigarette paper:

[0138] 1. Adding Support Layer 2: A first support layer 2-1 is added to the inner wall of conventional cigarette paper, only in areas requiring pressure resistance, by adhesive bonding. The first support layer 2-1 is a homogeneous mixture of 60% calcium carbonate, 20% guar gum, and 10% latex, with a thickness of 75 micrometers. The conventional cigarette paper has a basis weight of 28 grams per square meter, an air permeability of 60 CU, and a thickness of 150 micrometers. See also... Figure 5 .

[0139] The method for adding the first support layer 2-1 is as follows: Calcium carbonate, guar gum, latex, and water are uniformly mixed in a mass ratio of 60:20:10:10 to obtain a slurry. This slurry is then uniformly coated onto the inner wall of conventional cigarette paper to a thickness of 75 micrometers and dried at 120 degrees Celsius for 0.5 hours to obtain the first support layer 2-1.

[0140] 2. Embossing: On the inner wall of the conventional cigarette paper coated with the first support layer 2-1, a pattern with a width A of 580 micrometers and a depth H of 60 micrometers is embossed, and the spacing B between the embossed patterns is 380 micrometers. The cross-section formed by the embossed pattern is as follows: Figure 5 As shown.

[0141] 3-1. Based on the embossed effect, add a second support layer: On the first support layer 2-1 of the regular cigarette paper inner wall, add a second support layer 2-2 covering the entire area without using adhesive. The second support layer 2-2 is a highly permeable, low-filler forming paper with a basis weight of 18 grams per square meter, an air permeability of 10000 CU, and a thickness of 100 micrometers. The forming paper is coated with a citric acid solution with a pH of 6.5, at a coating amount of 3 grams per square meter. Figure 5 As shown.

[0142] 3-2. Re-embossing: On the outer surface of regular cigarette paper, emboss a pattern with a width A of 660 micrometers and a depth H of 200 micrometers. The spacing B between the embossed patterns is 300 micrometers. The cross-section formed by the patterns is as follows: Figure 5 The overall appearance is as follows: Figure 12 As shown. Conventional cigarette paper forms the cigarette paper body 1. The cigarette paper body 1 and the support layer 2 are integrally formed into composite embossed cigarette paper.

[0143] 4. Slitting and winding: The prepared composite embossed cigarette paper is slid into strips with a width of 19mm. The composite embossed cigarette paper is then wound into discs for storage, transportation and use without peeling off the first support layer 2-1 and the second support layer 2-2.

[0144] The structure of the above-mentioned composite embossed cigarette paper is structure B3: the inner surface of the composite embossed cigarette paper has a support layer 2, the support layer 2 includes a first support layer 2-1 and a second support layer 2-2 arranged sequentially from near to far from the inner surface of the cigarette paper body 1, the first support layer 2-1 has embossing, the second support layer 2-2 does not have embossing, and the space between the embossing of the first support layer 2-1 and the second support layer 2-2 forms an embossed combustion chamber 4.

[0145] Applications of composite embossed cigarette paper:

[0146] 5. Wrapping: The smoking material 3, such as tobacco, is wrapped in composite embossed cigarette paper with an embossed combustion chamber 4 without peeling off the first support layer 2-1 and the second support layer 2-2. Then, an adhesive is used to prepare a cigarette strip 8 with a circumference of 17mm. Figure 8 As shown.

[0147] 6. Slitting: Using the first slitting cutter 12, cut the tobacco strip 8 from the previous step into tobacco strips 9 that are twice the length. The length of the twice-length tobacco strip 9 is 94mm. (Example...) Figure 8 As shown.

[0148] 7. Splicing: Using the second slitting cutter 15, cut the double-length cigarette stick 9 from the previous step at the center position to obtain two single-length cigarette sticks 9-1, each 47mm in length. Insert a double-length filter rod 7-1 between the two single-length cigarette sticks 9-1, then wrap them together using double-length splicing paper 6-2 and adhesive to prepare a double-length cigarette 13. The double-length filter rod 7-1 is 106mm long, the double-length splicing paper 6-2 is 116mm long, and the double-length cigarette 13 is 200mm long. Figure 8 As shown.

[0149] 8. Further Cutting: Using the third cutting blade 16, cut the double-length cigarette 13 from the previous step in half from the center, resulting in two complete single-length cigarettes 14. Each single-length cigarette 14 is 100mm long and has a circumference of 17mm. Each complete single-length cigarette 14 includes a single-length cigarette bar 9-1, a single-length filter rod, and a single-length tipping paper 6. The single-length cigarette bar 9-1 is 47mm long, the single-length filter rod is 53mm long, and the single-length tipping paper 6 is 58mm long. Figure 8 As shown. A schematic diagram of a cigarette, as shown. Figure 12 As shown in the image. A partially enlarged view of the cross-sectional structure of a cigarette of one length (14), as shown in the image. Figure 5 As shown.

[0150] Example 5

[0151] Production of composite embossed cigarette paper:

[0152] 1. Adding Support Layer 2: Support layer 2 is added to the outer surface of regular cigarette paper in areas requiring pressure resistance by adhesive bonding. Support layer 2 is a mixture containing calcium carbonate, guar gum, and finely powdered plant fibers. Support layer 2 has a thickness of 95 micrometers. The regular cigarette paper has a basis weight of 32 grams per square meter, an air permeability of 60 CU, and a thickness of 150 micrometers.

[0153] The method for adding support layer 2 is as follows: Calcium carbonate, guar gum, finely powdered plant fiber, and water are uniformly mixed in a mass ratio of 60:10:20:10 to obtain a slurry. This slurry is then uniformly coated onto the outer surface of conventional cigarette paper to a thickness of 95 micrometers and dried at 120 degrees Celsius for 0.5 hours to obtain support layer 2.

[0154] 2. Embossing: On the outer surface of conventional cigarette paper with the support layer 2 bonded thereto, a pattern with a width A of 660 micrometers and a depth H of 180 micrometers is embossed, with a spacing B of 300 micrometers between the embossed patterns. The cross-section formed by the embossed patterns is as follows: Figure 13 As shown. Conventional cigarette paper is prepared to form the main body of cigarette paper 1.

[0155] 3. Based on the embossed effect: Steps 1 and 2 are not repeated. The cigarette paper body 1 and the support layer 2 together form a composite embossed cigarette paper.

[0156] 4. Slitting and winding: The prepared composite embossed cigarette paper is slid into strips with a width of 26.2mm. The composite embossed cigarette paper is then wound into discs for storage, transportation and use without peeling off the support layer 2.

[0157] The structure of the composite embossed cigarette paper is structure B4: the outer surface of the composite embossed cigarette paper has a support layer 2, the support layer 2 has embossing, and the space between the embossing of the cigarette paper body 1 and the smoke-generating material 3 to be wrapped forms an embossed combustion chamber 4.

[0158] Applications of composite embossed cigarette paper:

[0159] 5. Wrapping: The smoking material 3, such as tobacco, is wrapped in composite embossed cigarette paper with an embossed combustion chamber 4 without peeling off the support layer 2. Then, an adhesive is used to prepare a cigarette strip 8 with a circumference of 24.2 mm. Figure 8 As shown.

[0160] 6. Slitting: Using the first slitting cutter 12, cut the tobacco strip 8 from the previous step into tobacco strips 9 that are twice the length. The length of the twice-length tobacco strip 9 is 108mm. (Example...) Figure 8 As shown.

[0161] 7. Splicing: Using the second slitting cutter 15, cut the double-length cigarette stick 9 from the previous step at the center position to obtain two single-length cigarette sticks 9-1, each 54mm in length. Insert a double-length filter rod 7-1 between the two single-length cigarette sticks 9-1, then wrap them together using double-length splicing paper 6-2 and adhesive to prepare a double-length cigarette 13. The double-length filter rod 7-1 is 60mm long, the double-length splicing paper 6-2 is 70mm long, and the double-length cigarette 13 is 168mm long. Figure 8 As shown.

[0162] 8. Further Cutting: Using the third cutting blade 16, cut the double-length cigarette 13 from the previous step in half from the center, resulting in two complete single-length cigarettes 14. Each single-length cigarette 14 is 84mm long and has a circumference of 24.2mm. Each complete single-length cigarette 14 contains a single-length cigarette bar 9-1, a single-length filter rod, and a single-length tipping paper 6. Specifically, the single-length cigarette bar 9-1 is 54mm long, the single-length filter rod is 30mm long, and the single-length tipping paper 6 is 35mm long. Figure 8 As shown in the diagram. A schematic diagram of a cigarette of 14 times its original length is shown below. Figure 1 As shown in the enlarged view of the cross-sectional structure of a cigarette of one length (14mm), a partial view is shown below. Figure 13 As shown.

[0163] Comparative Example 1

[0164] Production of composite embossed cigarette paper:

[0165] 1. Selection and preparation of cigarette paper: The cigarette paper has a basis weight of 36 grams per square meter, an air permeability of 60 CU, and a thickness of 180 micrometers. See also... Figure 7 .

[0166] 2. Embossing: On the outer surface of cigarette paper, a pattern with a width A of 660 micrometers and a depth H of 70 micrometers is embossed, with a spacing B of 300 micrometers between the embossed patterns. The cross-section formed by the embossed patterns is as follows. Figure 7 As shown, Comparative Example 1 embossed cigarette paper 5 was obtained.

[0167] 3. Slitting and winding: The prepared Comparative Example 1 embossed cigarette paper 5 is slid into strips with a width of 26.2mm, and then wound into discs for storage, transportation and use.

[0168] Applications of composite embossed cigarette paper:

[0169] 4. Wrapping: Wrap the tobacco-generating material 3, such as shredded tobacco, with the slit cigarette paper 5 from Comparative Example 1, and then use adhesive to prepare the tobacco stick 8. The tobacco stick 8 has a circumference of 24.2 mm. Figure 10 As shown.

[0170] 5. Slitting: Using the first slitting cutter 12, cut the tobacco strip 8 from the previous step into tobacco strips 9 that are twice the length. The length of the twice-length tobacco strip 9 is 108mm. For example... Figure 10 As shown.

[0171] 6. Splicing: Using the second slitting cutter 15, cut the double-length cigarette stick 9 from the previous step at the center position to obtain two single-length cigarette sticks 9-1, each 54mm in length. Insert a double-length filter rod 7-1 between the two single-length cigarette sticks 9-1, then wrap them together using double-length splicing paper 6-2 and adhesive to prepare a double-length cigarette 13. The double-length filter rod 7-1 is 60mm long, the double-length splicing paper 6-2 is 70mm long, and the double-length cigarette 13 is 168mm long. Figure 10 As shown.

[0172] 7. Second Cutting: Using the third cutting blade 16, cut the double-length cigarette 13 from the previous step in half from the center, resulting in two complete single-length cigarettes 14. The single-length cigarette 14 is 84mm long and has a circumference of 24.2mm. Each complete single-length cigarette 14 includes a single-length cigarette bar 9-1, a single-length filter rod, and a single-length tipping paper 6. The single-length cigarette bar 9-1 is 54mm long, the single-length filter rod is 30mm long, and the single-length tipping paper 6 is 35mm long. Figure 10 As shown. Figure 6 This is a schematic diagram of the cigarette structure in Comparative Example 1. Figure 7 This is a magnified view of the cross-sectional structure of the cigarette in Comparative Example 1.

[0173] The composite embossed cigarette paper and cigarettes of the above embodiments and comparative examples were tested, and the sensory evaluation of the cigarettes was carried out. The results are shown in Table 1 below.

[0174] Table 1 Application Conclusions:

[0175]

[0176] The sensory evaluation of smoking in the table above is based on the national standard GB5606.4-2005 "Cigarettes Part 4: Sensory Technical Requirements".

[0177] Compared to Comparative Example 1, Example 1 improves the processing resistance of the embossed cigarette paper, avoiding paper cracks and the resulting cigarette leakage. It also prevents the embossed pattern from crumbling during rolling, storage, transportation, and application. This reduces quality control and production costs. After application, the cigarette can utilize the formed combustion chamber 4 structure to produce more complete combustion, resulting in a richer and more layered flavor, significantly improving product quality and reducing harmful substances such as tar and carbon monoxide produced by incomplete combustion. Furthermore, the cigarette paper surface exhibits a visually appealing, "Roman column" embossed effect. This provides significant anti-counterfeiting protection, leaving a lasting impression on consumers for repeat purchases. Therefore, Example 1 has broad application prospects. Figure 2 , Figure 12 As shown.

[0178] Compared to Comparative Example 1, Example 2 improves the processing resistance of the embossed cigarette paper, avoiding paper cracks and the resulting cigarette leakage. It also prevents the embossed pattern from crumbling during rolling, storage, transportation, and application. This reduces quality control and production costs. After application, the cigarette can utilize the formed combustion chamber 4 structure to produce more complete combustion, resulting in a richer and more layered flavor, significantly improving product quality and reducing harmful substances such as tar and carbon monoxide produced by incomplete combustion. Furthermore, the cigarette paper surface exhibits a visually appealing, "Roman column" embossed effect. This provides significant anti-counterfeiting protection, leaving a lasting impression on consumers for repeat purchases. Therefore, Example 2 has broad application prospects. Figure 3 , Figure 12 As shown.

[0179] Compared to Comparative Example 1, Example 3 improves the processing resistance of the embossed cigarette paper, avoiding paper cracks and the resulting cigarette leakage. It also prevents the embossed pattern from crumbling during rolling, storage, transportation, and application. This reduces quality control and production costs. After application, the cigarette can utilize the formed combustion chamber 4 structure to produce more complete combustion, resulting in a richer and more layered flavor, significantly improving product quality and reducing harmful substances such as tar and carbon monoxide produced by incomplete combustion. Furthermore, the cigarette paper surface exhibits a visually appealing, "huabiao"-like embossed effect. This provides significant anti-counterfeiting protection, leaving a lasting impression on consumers for repeat purchases. Therefore, Example 3 has a very broad application prospect. Figure 4 , Figure 11 As shown.

[0180] Compared to Comparative Example 1, Example 4 improves the processing resistance of the embossed cigarette paper, avoiding paper cracks and the resulting cigarette leakage. It also prevents the embossed pattern from crumbling during rolling, storage, transportation, and application. This reduces quality control and production costs. After application, the cigarette can utilize the formed combustion chamber 4 structure to produce more complete combustion, resulting in a richer and more layered flavor, significantly improving product quality and reducing harmful substances such as tar and carbon monoxide produced by incomplete combustion. Furthermore, the cigarette paper surface exhibits a visually appealing, "Roman column" embossed effect. This provides significant anti-counterfeiting protection, leaving a lasting impression on consumers for repeat purchases. Therefore, Example 4 has a very broad application prospect. Figure 5 , Figure 12 As shown.

[0181] Compared to Comparative Example 1, Example 5 improves the processing resistance of the embossed cigarette paper, avoiding paper cracks and the resulting cigarette leakage. It also prevents the embossed pattern from crumbling during rolling, storage, transportation, and application. This reduces quality control and production costs. After application, the cigarette can utilize the formed combustion chamber 4 structure to produce more complete combustion, resulting in a richer and more layered flavor, significantly improving product quality and reducing harmful substances such as tar and carbon monoxide produced by incomplete combustion. Furthermore, the cigarette paper surface exhibits a visually appealing, "Roman column" embossed effect. This provides significant anti-counterfeiting protection, leaving a lasting impression on consumers for repeat purchases. Therefore, Example 5 has broad application prospects. Figure 13 , Figure 12 As shown.

[0182] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the structure of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

[0183] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered as falling under the protection of the present invention.

Claims

1. A composite embossed cigarette paper capable of forming an embossed combustion chamber, characterized in that, The composite embossed cigarette paper includes: a cigarette paper body (1), the cigarette paper body (1) having embossing; The structure of the composite embossed cigarette paper is selected from one of the following structures: Structure A: The inner surface of the composite embossed cigarette paper has no support layer (2), the embossing depth on the main body of the cigarette paper (1) is more than 50 mm, and the space between the main body of the cigarette paper (1) and the smoke-generating material (3) to be wrapped by the composite embossed cigarette paper forms an embossed combustion chamber (4). Structure B1: The inner surface of the composite embossed cigarette paper has a support layer (2), the support layer (2) also has embossing, and the space between the embossing of the support layer (2) and the smoke-generating material (3) to be wrapped by the composite embossed cigarette paper forms an embossed combustion chamber (4). Structure B2: The inner surface of the composite embossed cigarette paper has a support layer (2), the support layer (2) has no embossing, and the space between the embossing of the cigarette paper body (1) and the support layer (2) forms a relief-shaped combustion chamber (4); Structure B3: The inner surface of the composite embossed cigarette paper has a support layer (2). The support layer (2) includes a first support layer (2-1) and a second support layer (2-2) arranged sequentially from near to far from the inner surface of the cigarette paper body (1). The first support layer (2-1) has embossing, while the second support layer (2-2) does not have embossing. The space between the embossing of the first support layer (2-1) and the second support layer (2-2) forms an embossed combustion chamber (4). Structure B4: The outer surface of the composite embossed cigarette paper has a support layer (2), the support layer (2) has embossing, and the space between the embossing of the cigarette paper body (1) and the smoke-generating material (3) to be wrapped forms a relief-shaped combustion chamber (4).

2. The composite embossed cigarette paper capable of forming an embossed combustion chamber (4) according to claim 1, characterized in that, The support layer (2) and the first support layer (2-1) are independently selected from: a calcium carbonate mixture layer or a paper layer; The second support layer (2-2) is a paper layer.

3. The composite embossed cigarette paper capable of forming an embossed combustion chamber (4) according to claim 2, characterized in that, The calcium carbonate mixture layer, in addition to calcium carbonate, also contains: plant fiber powder and / or adhesive; The adhesive is selected from one or both of latex and guar gum.

4. The composite embossed cigarette paper capable of forming an embossed combustion chamber (4) according to claim 2, characterized in that, The paper layer and the cigarette paper body (1) may or may not contain an adhesive.

5. A cigarette with an embossed combustion chamber, characterized in that, The cigarette comprises the composite embossed cigarette paper as described in claim 1 and the smoke-generating material (3) wrapped by the composite embossed cigarette paper.

6. A method for preparing composite embossed cigarette paper capable of forming an embossed combustion chamber (4) as described in claim 1, characterized in that, The preparation methods include the following: The method for preparing the composite embossed cigarette paper of structure A includes the following steps: A support layer (2) is provided on the inner and / or outer surfaces of the cigarette paper body (1), and then embossing is performed on the cigarette paper body (1) and the support layer (2), with the embossing depth being more than 50 mm. Thus, at least the cigarette paper body (1) is left with embossing. The support layer (2) is removed to obtain the composite embossed cigarette paper of structure A. The space between the cigarette paper body (1) and the smoke-generating material (3) to be wrapped by the composite embossed cigarette paper forms an embossed combustion chamber (4), thus obtaining the composite embossed cigarette paper of structure A1. The method for preparing the composite embossed cigarette paper with structure B1 includes the following steps: A support layer (2) is provided on the inner surface of the cigarette paper body (1), and then embossing is done on the cigarette paper body (1) and the support layer (2), so that embossing is left on both the cigarette paper and the support layer (2), and the cigarette paper body (1) and the support layer (2) are integrally formed into a composite embossed cigarette paper. The space between the embossing of the support layer (2) and the smoking material to be wrapped by the cigarette paper forms a relief-shaped combustion chamber (4), thus obtaining the composite embossed cigarette paper with structure B1. The method for preparing cigarette paper with structure B2 includes the following steps: A support layer (2) is provided on the inner surface of the cigarette paper body (1), and then embossing is performed on the cigarette paper body (1) and the support layer (2). Embossing is left on the cigarette paper body (1), and the support layer (2) rebounds without leaving embossing. The space between the embossing of the cigarette paper body (1) and the support layer (2) forms an embossed combustion chamber (4), thus obtaining the composite embossed cigarette paper with structure B2. The method for preparing cigarette paper with structure B3 is as follows: A first support layer (2-1) is provided on the inner surface of the cigarette paper body (1), and then embossing is done on the cigarette paper body (1) and the first support layer (2-1), so that embossing is left on both the cigarette paper body (1) and the first support layer (2-1); Then, a second support layer (2-2) is provided on the inner surface of the first support layer (2-1). Then, embossing is done on the cigarette paper and the first support layer (2-1) and the second support layer (2-2). The second support layer (2-2) rebounds without leaving any embossing. The space between the embossing of the first support layer (2-1) and the second support layer (2-2) forms an embossed combustion chamber (4), thus obtaining the composite embossed cigarette paper with structure B3. The method for preparing the composite embossed cigarette paper with structure B4 includes the following steps: A support layer (2) is provided on the outer surface of the cigarette paper body (1), and then embossing is done on the support layer (2) and the cigarette paper body (1). Embossing is left on both the cigarette paper and the support layer (2). The cigarette paper body (1) and the support layer (2) together form a composite embossed cigarette paper. The space between the embossing of the cigarette paper body (1) and the smoke-generating material (3) to be wrapped forms a relief-shaped combustion chamber (4), thus obtaining the composite embossed cigarette paper with structure B4.

7. The preparation method according to claim 6, characterized in that, The embossing location is the inner or outer surface of the object to be embossed, and the embossing area is the entire area or a partial area of ​​the object to be embossed. The steps of setting the support layer (2), setting the first support layer (2-1), setting the second support layer (2-2), and embossing are performed once or multiple times.

8. The preparation method according to claim 6, characterized in that, The areas where the support layer (2) and the first support layer (2-1) are set are the entire area or a partial area of ​​the corresponding surface of the cigarette paper body (1); The area where the second support layer (2-2) is disposed is the entire area or a partial area of ​​the inner surface of the first support layer (2-1).

9. The preparation method according to claim 6, characterized in that, The preparation method further includes a slitting and winding step: the obtained composite embossed cigarette paper is slit into strips of a specified width, and after peeling or not peeling the support layer (2), the first support layer (2-1) or the second support layer (2-2), it is wound into a disc-shaped composite embossed cigarette paper for later use.

10. A method for preparing a cigarette with an embossed combustion chamber (4) as described in claim 5, characterized in that, The preparation method includes the following steps: When the structure of the composite embossed cigarette paper is structure A, the cigarette paper is used to wrap the smoking material (3) and is combined with an adhesive to prepare a cigarette bar (8); then the cigarette bar (8) is cut, a filter rod is attached, and then it is cut again to obtain cigarettes; When the structure of the composite embossed cigarette paper is structure B1, structure B2, structure B3 or structure B4, after peeling off or not peeling off the support layer (2), a composite embossed cigarette paper with an embossed combustion chamber (4) is obtained. The composite embossed cigarette paper is used to wrap the smoking material (3) and is combined with an adhesive to prepare a cigarette bar (8). Then the cigarette bar (8) is cut, a filter rod is attached, and then it is cut again to obtain cigarettes.

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