A cigarette frame paper and a tobacco product

Abstract

The application discloses a cigarette frame paper, which comprises a base material layer, a first adhesive layer, a first information layer and a first protective layer. The base material layer is arranged between the first information layer and the first protective layer in a laminated manner, and is used for supporting the first information layer and the first protective layer, so that breakage or deformation is not prone to occur in the processing and use process. The grammage of the base material layer is 190 g / m 2 to 200 g / m 2 The base material layer not only has a certain structural strength, but also realizes the lightweight of the base material layer. The first adhesive layer is arranged between the first information layer and the base material layer in a laminated manner. The first adhesive layer is used for firmly bonding the first information layer and the base material layer. The base material layer comprises a first surface facing the first adhesive layer, the first surface is provided with a plurality of first grooves, and the first adhesive layer is partially embedded in the first grooves. The contact area between the first adhesive layer and the base material layer is increased, the bonding strength between the base material layer and the first adhesive layer and between the base material layer and the first information layer is enhanced, and therefore the interlayer separation phenomenon that may occur in the subsequent processing, storage or use process is reduced.

Description

Technical Field

[0001] This application relates to the field of packaging materials technology, and in particular to a cigarette frame paper and tobacco products. Background Technology

[0002] Cigarette frame paper is a type of cardboard used to support and position the frame of a cigarette pack. It is mainly lined inside the cigarette pack, serving a supporting and positioning function to ensure the stability and aesthetics of the cigarette pack during transportation and use.

[0003] The base material for cigarette packing paper is often white cardboard, which is combined with functional layers such as aluminum foil to achieve functions such as moisture protection and anti-counterfeiting. However, the bonding strength between the white cardboard and the functional layers may not be strong, which can cause interlayer separation during subsequent processing, storage, or use, directly affecting product quality and reliability. Utility Model Content

[0004] This application aims to provide a cigarette frame paper and tobacco products, with the goal of improving the structural stability between the layers of the cigarette frame paper.

[0005] In a first aspect, this application proposes a cigarette frame paper, which includes a substrate layer, a first adhesive layer, a first information layer, and a first protective layer. The substrate layer is stacked between the first information layer and the first protective layer; the first adhesive layer is stacked between the first information layer and the substrate layer. The substrate layer includes a first surface facing the first adhesive layer, and the first surface has a plurality of first grooves, with the first adhesive layer partially embedded in the first grooves. The basis weight of the substrate layer is 190 g / m². 2 Up to 200g / m 2 .

[0006] In some embodiments, the cross-sectional area of ​​the first groove gradually decreases along the first direction in the second direction; the first direction is the direction from the substrate layer to the first protective layer; the first direction and the second direction are perpendicular.

[0007] In some embodiments, the cigarette frame paper further includes a second protective layer disposed on the side of the first information layer opposite to the first adhesive layer.

[0008] In some embodiments, the cigarette frame paper further includes a second adhesive layer disposed between the substrate layer and the first protective layer.

[0009] In some embodiments, along the thickness direction of the substrate layer, the substrate layer further includes a second surface disposed opposite to the first surface, the second surface having a plurality of second grooves, and the second adhesive layer being partially embedded in the second grooves.

[0010] In some embodiments, the cigarette frame paper further includes an antibacterial layer disposed between the first information layer and the second protective layer.

[0011] In some embodiments, the depth of the first groove is 5 μm to 15 μm along the thickness direction of the substrate layer; and / or the thickness of the substrate layer is 250 μm to 350 μm.

[0012] In some embodiments, the surface of the first information layer opposite to the first adhesive layer is provided with a textured pattern, the texture being configured to display the first information.

[0013] In some embodiments, the thickness of the first adhesive layer is 1 μm to 2 μm.

[0014] Secondly, embodiments of this application also provide a tobacco product, including cigarette frame paper as described in any of the first aspects.

[0015] Unlike existing technologies, this application provides a cigarette frame paper comprising a substrate layer, a first adhesive layer, a first information layer, and a first protective layer. The substrate layer is stacked between the first information layer and the first protective layer, serving to support both layers and preventing damage or deformation during subsequent processing and use. 2 Up to 200g / m 2 This design not only provides the substrate layer with structural strength but also reduces its weight. A first adhesive layer is stacked between the first information layer and the substrate layer to firmly bond the two layers together. The substrate layer includes a first surface facing the first adhesive layer, and the first surface has several first grooves, with the first adhesive layer partially embedded in these grooves. This increases the contact area between the first adhesive layer and the substrate layer, enhancing the bonding strength between the substrate layer and the first adhesive layer, as well as between the substrate layer and the first information layer, thereby reducing the possibility of delamination during subsequent processing, storage, or use.

[0016] Additional aspects and advantages of the embodiments of this application will be described, shown, or illustrated in part by way of implementation of the embodiments of this application in the following description. Attached Figure Description

[0017] One or more embodiments are illustrated by way of example with reference to the accompanying drawings, which are not intended to limit the embodiments, and elements having the same reference numerals in the drawings are designated as similar elements.

[0018] Figure 1 This is a schematic diagram of the structure of the cigarette frame paper provided in some embodiments of this application; Figure 2 This is a planar schematic diagram of the first groove provided in some embodiments of this application; Figure 3 This is a schematic diagram of the structure of the cigarette frame paper provided in some embodiments of this application; Figure 4 This is a schematic diagram of the structure of the cigarette frame paper provided in some embodiments of this application; Figure 5 This is a planar schematic diagram of the second groove provided in some embodiments of this application; Figure 6 This is a schematic diagram of the structure of the cigarette frame paper provided in some embodiments of this application.

[0019] Figure label: 100. Cigarette frame paper; 10. Substrate layer; 11. First surface; 111. First groove; 12. Second surface; 121. Second groove; 20. First adhesive layer; 30. First information layer; 40. First protective layer; 50. Second protective layer; 60. Second adhesive layer; 70. Antibacterial layer; X, the first direction; Y, the second direction. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0021] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0022] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0023] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0024] The technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0025] In the first aspect, embodiments of this application provide a cigarette frame paper 100, please refer to... Figure 1 The cigarette frame paper 100 includes a substrate layer 10, a first adhesive layer 20, a first information layer 30, and a first protective layer 40.

[0026] The substrate layer 10 is the main body of the cigarette frame paper 100, with a thickness of 250μm to 350μm, and is used to support the overall structure of the cigarette frame paper 100. The substrate layer 10 is stacked between the first information layer 30 and the first protective layer 40, and serves to support both layers. The substrate layer 10 needs to possess sufficient structural strength to prevent damage or deformation during subsequent processing and use. The substrate layer 10 can be made of high bulk, low basis weight white cardboard. For example, the basis weight of the substrate layer 10 can be 190g / m². 2 Up to 200g / m 2 The white cardboard used not only gives the substrate layer 10 a certain structural strength and makes it lightweight, but also reduces production costs.

[0027] The first adhesive layer 20 is stacked between the first information layer 30 and the substrate layer 10 to firmly bond the first information layer 30 and the substrate layer 10. Please refer to... Figure 1 and Figure 2The substrate layer 10 includes a first surface 11 facing the first adhesive layer 20. The first surface 11 has a plurality of first grooves 111, which can be randomly or regularly distributed on the first surface 11. The first adhesive layer 20 is partially embedded in the first grooves 111, increasing the contact area between the first adhesive layer 20 and the substrate layer 10, and enhancing the bonding strength between the substrate layer 10 and the first adhesive layer 20, as well as between the substrate layer 10 and the first information layer 30, thereby reducing interlayer separation that may occur during subsequent processing, storage, or use. The depth of the first grooves 111 along the thickness direction of the substrate layer 10 is 5μm to 15μm. For example, the first grooves 111 can be 5μm, 6μm, 7μm, 8μm, 9μm, 10μm, 11μm, 13μm, 15μm, etc. The first grooves 111 being positioned within the above range not only optimize the interlayer bonding performance and enhance the stability of the overall structure, making it less prone to breakage or warping during subsequent processing.

[0028] Furthermore, along the first direction X, the cross-sectional area of ​​the first groove 111 gradually decreases in the second direction Y. The first direction X is the direction from the substrate layer 10 to the first protective layer 40, and the first direction X is perpendicular to the second direction Y. The second direction Y can be the length direction of the substrate layer 10, or it can be the width direction of the substrate layer 10. It can be understood that after the adhesive in the first adhesive layer 20 is embedded in the first groove 111, it forms an "inverted trapezoidal" anchoring structure in the first groove 111, making the first adhesive layer 20 bonded to the substrate layer 10 more firmly. Moreover, the cross-sectional area of ​​the first groove 111 gradually decreases in the second direction Y, making the groove wall of the first groove 111 an inclined surface. Stress can be evenly transmitted to the interior of the substrate layer 10 along the inclined surface, so that the stress is evenly distributed and local stress overload is reduced.

[0029] The first adhesive layer 20 in this embodiment is mainly formed by blending acrylic resin and styrene-butadiene resin. By using a combination of acrylic resin and styrene-butadiene resin, the first adhesive layer 20 can effectively improve its adhesion performance and durability. Acrylic resin has good transparency and bonding strength, while styrene-butadiene resin provides excellent flexibility and anti-aging ability. The combination of the two allows the first adhesive layer 20 to maintain its structural integrity even in high temperature or humid environments.

[0030] In some embodiments, the thickness of the first adhesive layer 20 is 1 μm to 2 μm. For example, the thickness of the first adhesive layer 20 can be 1 μm, 1.1 μm, 1.3 μm, 1.5 μm, 1.8 μm, 2 μm, etc.

[0031] The first information layer 30 is the portion of the cigarette frame paper 100 used to carry information, and its thickness is 5μm to 10μm. The first information layer 30 can be made of aluminum foil, PET film, or PET composite film. For example, aluminum foil has extremely high metallic luster and excellent barrier properties, which not only allows for the printing of textured patterns to achieve anti-counterfeiting information but also provides moisture-proof, oxygen-proof, and light-proof functions. Furthermore, the surface of the first information layer 30 facing away from the first adhesive layer 20 is provided with a textured pattern. This textured pattern not only enhances the visual effect but can also be configured to display the first information, such as anti-counterfeiting labels or brand information.

[0032] The first protective layer 40 is made of water-based acrylic waterproof barrier material. It possesses excellent waterproof and barrier properties, effectively reducing the penetration of external moisture or humidity into the cigarette frame paper 100, thus protecting the substrate layer 10 and the first information layer 30 from moisture. The water-based acrylic material is environmentally friendly and non-toxic, meeting the requirements of modern packaging materials for green production. It also has good flexibility and adhesion, making the first protective layer 40 less prone to cracking or peeling during processing. Furthermore, the first protective layer 40 also has certain UV resistance, which can delay the aging or discoloration of the cigarette frame paper 100 caused by prolonged exposure to sunlight, further extending the product's lifespan.

[0033] In some real-world applications, the thickness of the first protective layer 40 is 1 μm to 2 μm. For example, the thickness of the first protective layer 40 can be 1 μm, 1.2 μm, 1.5 μm, 1.8 μm, 2 μm, etc. This ensures the waterproof barrier performance of the first protective layer 40 without excessively increasing the overall thickness of the cigarette frame paper 100, thus ensuring its flexibility and adaptability in practical applications.

[0034] In some embodiments, please refer to Figure 3 The cigarette frame paper 100 also includes a second protective layer 50, which is disposed on the side of the first information layer 30 opposite to the first adhesive layer 20.

[0035] The second protective layer 50 is made of a water-based varnish of water-based ester amine ester material. This water-based varnish is non-toxic, odorless, and highly transparent, and also possesses excellent abrasion resistance and scratch resistance, effectively protecting the first information layer 30 from external physical damage. The thickness of the second protective layer 50 is typically between 1 μm and 2 μm, providing protection without significantly increasing the overall thickness of the cigarette frame paper 100. Furthermore, the second protective layer 50 exhibits good optical transparency, with a light transmittance exceeding 90%, ensuring that the textured patterns on the first information layer 30 are clearly visible. The second protective layer 50 and the first information layer 30 form a stable composite structure, further enhancing the durability and service life of the cigarette frame paper 100.

[0036] In some embodiments, please refer to Figure 4 The cigarette frame paper 100 also includes a second adhesive layer 60, which is disposed between the substrate layer 10 and the first protective layer 40. This second adhesive layer 60 is used to firmly bond the first protective layer 40 and the substrate layer 10. Figure 5 The substrate layer 10 also includes a second surface 12 disposed opposite to the first surface 11. The second surface 12 has a plurality of second grooves 121. The second adhesive layer 60 is partially embedded in the second grooves 121, which increases the contact area between the second adhesive layer 60 and the substrate layer 10, and enhances the bonding strength between the substrate layer 10 and the second adhesive layer 60, as well as between the substrate layer 10 and the first protective layer 40, thereby reducing the interlayer separation phenomenon that may occur during subsequent processing, storage or use.

[0037] Furthermore, in the opposite direction of the first direction X, the cross-sectional area of ​​the second groove 121 gradually decreases in the second direction Y. After the adhesive in the second adhesive layer 60 is embedded in the second groove 121, it forms an inverted trapezoidal anchoring structure within the second groove 121, making the bond between the second adhesive layer 60 and the substrate layer 10 more secure. Moreover, the gradual decrease in the cross-sectional area of ​​the second groove 121 in the second direction Y results in a sloped groove wall, allowing stress to be evenly transmitted to the interior of the substrate layer 10 along the slope, thus dispersing stress evenly and reducing localized stress overload.

[0038] In some embodiments, the cigarette frame paper 100 further includes an antibacterial layer 70, please refer to Figure 6 An antibacterial layer 70 is disposed between the first information layer 30 and the second protective layer 50. The antibacterial layer 70 can be made of natural or inorganic antibacterial agents. For example, the antibacterial layer 70 is composed of a silver ion antibacterial agent and a water-based polyurethane material, giving it excellent antibacterial properties and good adhesion. The silver ion antibacterial agent inhibits bacterial growth by slowly releasing silver ions, reducing microbial growth on the surface of the cigarette frame paper 100 and thus improving the product's hygiene and safety. The water-based polyurethane material gives the antibacterial layer 70 a certain degree of flexibility and abrasion resistance, making it less prone to cracking or peeling during use. Furthermore, the antibacterial layer 70 also has a certain degree of transparency, reducing obstruction of the textured patterns on the first information layer 30 and maintaining the decorative effect and information display function of the cigarette frame paper 100.

[0039] This application provides a cigarette frame paper 100, including a substrate layer 10, a first adhesive layer 20, a first information layer 30, and a first protective layer 40. The substrate layer 10 is stacked between the first information layer 30 and the first protective layer 40, and can be used to support the first information layer 30 and the first protective layer 40, making it less prone to damage or deformation during subsequent processing and use. The basis weight of the substrate layer 10 is 190 g / m². 2Up to 200g / m 2 This design not only provides the substrate layer 10 with structural strength but also reduces its weight. A first adhesive layer 20 is stacked between the first information layer 30 and the substrate layer 10. It is used to firmly bond the first information layer 30 and the substrate layer 10. The substrate layer 10 includes a first surface 11 facing the first adhesive layer 20, and the first surface 11 has a plurality of first grooves 111. The first adhesive layer 20 is partially embedded in the first grooves 111. This increases the contact area between the first adhesive layer 20 and the substrate layer 10, enhancing the bonding strength between the substrate layer 10 and the first adhesive layer 20, as well as between the substrate layer 10 and the first information layer 30, thereby reducing the possibility of interlayer separation during subsequent processing, storage, or use.

[0040] Secondly, embodiments of this application also provide a tobacco product, including a cigarette frame paper 100 as described in any of the first aspects.

[0041] The following describes embodiments of this application. The embodiments described below are exemplary and are only used to explain this application, and should not be construed as limiting this application. Where specific techniques or conditions are not specified in the embodiments, they are performed according to the techniques or conditions described in the literature in this field or according to the product instructions. Reagents or instruments used, unless otherwise specified, are all conventional products that can be obtained commercially.

[0042] Example 1 (1) Select a thickness of 300μm and a basis weight of 195g / m 2 The substrate is a thick white cardboard. Several first grooves are made on the first surface of the substrate. A layer of water-based acrylic is coated on the other side of the substrate to form a first composite layer. The water-based acrylic is dried to form a first protective layer.

[0043] (2) Select an aluminum foil with a thickness of 6μm as the first information layer, and back coat the surface of the first information layer with an adhesive made of acrylic resin and styrene-butadiene resin to form a second composite layer. After drying, the adhesive forms a first adhesive layer on the surface of the first information layer.

[0044] (3) After the first surface of the first composite layer and the first adhesive layer of the second composite layer are positioned opposite each other, hot pressing is performed at a pressure of 6 bar and then dried at a temperature of 120°C to obtain cigarette frame paper.

[0045] Example 2 (1) Select a thickness of 300μm and a basis weight of 195g / m 2 The substrate is a thick white cardboard. Several first grooves are made on the first surface of the substrate. A layer of water-based acrylic is coated on the other side of the substrate to form a first composite layer. The water-based acrylic is dried to form a first protective layer.

[0046] (2) Select an aluminum foil with a thickness of 6μm as the first information layer, and back coat the surface of the first information layer with an adhesive made of acrylic resin and styrene-butadiene resin to form a second composite layer. After drying, the adhesive forms a first adhesive layer on the surface of the first information layer.

[0047] (3) After the first surface of the first composite layer and the first adhesive layer of the second composite layer are positioned opposite each other, hot pressing is performed at a pressure of 6 bar. After drying at 120°C, water-based varnish is applied to the surface of the first information layer and dried at 100°C. The water-based varnish forms a second protective layer on the surface of the adhesive layer, thus obtaining cigarette frame paper.

[0048] Comparative Example 1 (1) Select a thickness of 300μm and a basis weight of 225g / m 2 Ordinary white cardboard is used as the base layer. A layer of water-based acrylic is coated on one side of the base layer to form the first composite layer. The water-based acrylic is dried to form the first protective layer.

[0049] (2) Select an aluminum foil with a thickness of 6μm as the first information layer, and back coat the surface of the first information layer with an adhesive made of acrylic resin and styrene-butadiene resin to form a second composite layer. After drying, the adhesive forms a first adhesive layer on the surface of the first information layer.

[0050] (3) After the surface of the first composite layer away from the first protective layer is placed opposite to the first adhesive layer of the second composite layer, hot pressing is performed at a pressure of 6 bar and then dried at a temperature of 120°C to obtain cigarette frame paper.

[0051] Ten sheets of cigarette frame paper prepared in Example 1 and Comparative Example 1 were selected and subjected to the following experiments: adhesion test, freeze resistance test, abrasion resistance test, and back moisture resistance test.

[0052] Table 1

[0053] According to the results in Table 1, the film layers in Examples 1 and 2 did not peel off, indicating that the cigarette frame paper prepared in this application has good adhesion between the layers and is not prone to interlayer separation during production and processing. In Comparative Example 1, the substrate layer peeled off, indicating that the adhesion between the substrate layer and the first adhesive layer in Comparative Example 1 is not strong. This may be due to the absence of a first groove structure in the substrate layer, which reduces the adhesive force between the substrate layer and the first adhesive layer.

[0054] Comparing the results of the freeze-thaw resistance and abrasion resistance tests of Example 1 and Comparative Example 1, it can be seen that Example 1 and Comparative Example 1 performed similarly in the freeze-thaw resistance and abrasion resistance tests, indicating that the first groove structure of the substrate layer has little impact on these two properties. However, in the adhesion test, Comparative Example 1 experienced substrate layer detachment, while Example 1 and Example 2 did not experience similar problems, further verifying the effectiveness of the first groove in enhancing interlayer bonding strength.

[0055] Comparing Example 1, Example 2, and Comparative Example 1, Example 2 showed a higher number of folding cycles than Example 1 and Comparative Example 1, indicating that the addition of the second protective layer further improved the flexibility and folding resistance of the cigarette frame paper. This may be related to the characteristics of the water-based varnish in the second protective layer, whose excellent abrasion resistance and scratch resistance provide additional support and protection for the overall structure.

[0056] The water absorption of both the examples and the comparative examples is less than 3%, indicating that the cigarette frame can effectively block external moisture and reduce the main substrate layer from becoming brittle due to moisture.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them; under the concept of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this application as described above, which are not provided in detail for the sake of brevity; although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A cigarette frame paper, characterized in that, It includes a substrate layer, a first adhesive layer, a first information layer, and a first protective layer; the substrate layer is stacked between the first information layer and the first protective layer; the first adhesive layer is stacked between the first information layer and the substrate layer; The substrate layer includes a first surface facing the first adhesive layer, and the first surface is provided with a plurality of first grooves, wherein the first adhesive layer is partially embedded in the first grooves. The basis weight of the substrate layer is 190 g / m³. 2 Up to 200g / m 2 .

2. The cigarette frame paper according to claim 1, characterized in that, Along the first direction, the cross-sectional area of ​​the first groove gradually decreases in the second direction; The first direction is the direction from the substrate layer to the first protective layer; The first direction and the second direction are perpendicular.

3. The cigarette frame paper according to claim 1, characterized in that, The cigarette frame paper also includes a second protective layer, which is disposed on the side of the first information layer opposite to the first adhesive layer.

4. The cigarette frame paper according to any one of claims 1 or 3, characterized in that, The cigarette frame paper further includes a second adhesive layer, which is disposed between the substrate layer and the first protective layer.

5. The cigarette frame paper according to claim 4, characterized in that, Along the thickness direction of the substrate layer, the substrate layer further includes a second surface disposed opposite to the first surface, the second surface having a plurality of second grooves, and the second adhesive layer being partially embedded in the second grooves.

6. The cigarette frame paper according to claim 3, characterized in that, The cigarette frame paper also includes an antibacterial layer, which is disposed between the first information layer and the second protective layer.

7. The cigarette frame paper according to claim 1, characterized in that, Along the thickness direction of the substrate layer, the depth of the first groove is 5 μm to 15 μm; And / or, the thickness of the substrate layer is 250 μm to 350 μm.

8. The cigarette frame paper according to claim 1, characterized in that, The surface of the first information layer opposite to the first adhesive layer is provided with a textured pattern, and the texture is configured to display the first information.

9. The cigarette frame paper according to claim 1, characterized in that, The thickness of the first adhesive layer is 1 μm to 2 μm.

10. A tobacco product, characterized in that, Includes the cigarette frame paper as described in any one of claims 1 to 9.

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