Environment-friendly inner liner paper for cigarette

Abstract

The utility model discloses an environmental protection type is with inner lining paper in cigarette belongs to inner lining paper technical field, including inner lining paper body, the inner lining paper body is by base paper layer, adsorption layer, antibacterial layer, toughening layer, barrier layer and wear -resisting layer constitutes, one side of base paper layer and one side of adsorption layer mutually adhere, the other side of adsorption layer and one side of antibacterial layer mutually adhere, the other side of antibacterial layer and one side of toughening layer mutually adhere, the other side of toughening layer and one side of barrier layer mutually adhere, the other side of barrier layer and one side of wear -resisting layer mutually adhere, the other side of wear -resisting layer is provided with hot melt adhesive layer, reaches the effect of improving inner lining paper body tear -resistant through the toughening layer set, through the promotion tear -resistant index and the folding number of times, makes the breakage rate reduction in the processing, through the stress dispersion effect of toughening layer, improves the connecting effect between layer and layer, avoids the situation of delamination.

Description

Technical Field

[0001] This utility model relates to the field of inner lining paper technology, specifically to an environmentally friendly cigarette inner lining paper. Background Technology

[0002] Cigarettes are tobacco products made by drying tobacco, shredding it, and then rolling it into long, cylindrical strips using paper. Cigarette liner paper is the packaging material used to line the inner layer of cigarette packs, whether soft or hard, and is an important component of cigarette products. Because the liner paper, which is in close contact with cigarettes, is often made of non-environmentally friendly aluminum foil composite paper, prolonged use of aluminum foil composite paper for cigarette packaging leads to a significant waste of aluminum resources. Furthermore, the non-biodegradable nature of the material causes serious environmental pollution. However, an environmentally friendly cigarette liner paper, with announcement number CN219294945U, uses polyhydroxyalkanoate film to replace aluminum foil. The use of this material effectively blocks the aroma of cigarettes, preventing aroma leakage and improving the aroma retention of the inner liner paper. It also reduces the waste of aluminum foil resources. Furthermore, since polyhydroxyalkanoate film is a type of biodegradable plastic, it has good environmental effects and will not cause pollution to the environment. In addition, the antibacterial layer, heat insulation layer, breathable layer, odor absorption layer, and waterproof layer are all made of environmentally friendly materials, thereby improving the environmental performance of the inner liner paper. This solves the problem of the waste of a large amount of aluminum resources caused by the long-term use of aluminum foil composite paper for cigarette inner packaging, as well as the serious environmental pollution caused by the non-degradable material.

[0003] While the aforementioned technologies can improve the environmental performance of the inner lining paper itself, they suffer from insufficient tear resistance. During the conveying, folding, and cutting processes of high-speed packaging machines, the inner lining paper is prone to edge tearing, local damage, or breakage due to insufficient tear resistance. This leads to equipment jamming, machine shutdown, and increased frequency of downtime for cleaning and material replacement, thereby reducing production efficiency. Furthermore, insufficient tear resistance can also cause a decrease in interlayer peel strength, resulting in delamination. Utility Model Content

[0004] The purpose of this invention is to provide an environmentally friendly cigarette liner paper to solve the problem mentioned in the background art of insufficient tear resistance of the liner paper currently on the market.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an environmentally friendly cigarette liner paper, comprising a liner paper body, wherein the liner paper body is composed of a base paper layer, an absorbent layer, an antibacterial layer, a toughening layer, a barrier layer, and a wear-resistant layer. One side of the base paper layer and one side of the absorbent layer are bonded together, the other side of the absorbent layer and one side of the antibacterial layer are bonded together, the other side of the antibacterial layer and one side of the toughening layer are bonded together, the other side of the toughening layer and one side of the barrier layer are bonded together, the other side of the barrier layer and one side of the wear-resistant layer are bonded together, and a hot melt adhesive layer is provided on the other side of the wear-resistant layer.

[0006] Preferably, the base paper layer is made of softwood pulp, and the base paper layer is reinforced with a plant fiber layer, which is made of hemp fiber material.

[0007] Preferably, the adsorption layer is made of activated carbon nanofiber membrane, and polylactic acid is added inside the adsorption layer.

[0008] Preferably, the toughening layer is a biomimetic micro / nano structure, and the toughening layer is made of a composite of polycaprolactone film and cellulose nanofibers.

[0009] Preferably, the antibacterial layer is made of chitosan and nano zinc oxide composite, and the barrier layer is made of microcrystalline wax and water-based polyvinyl alcohol composite.

[0010] Preferably, the wear-resistant layer is made of water-based polyurethane, and a matting agent is added to the wear-resistant layer.

[0011] Preferably, the hot melt adhesive layer is made of polylactic acid and polycaprolactone composite, and the hot melt adhesive layer is evenly distributed around the wear-resistant layer.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: By using softwood pulp base paper in the base paper layer and an internal composite plant fiber reinforcement layer, an environmentally friendly effect is achieved. There is no need to add non-degradable components such as glass fiber and synthetic fiber. Plant fiber and wood pulp are both natural polymers that can be completely degraded in the natural environment, avoiding soil pollution or microplastic residues caused by traditional reinforcement materials.

[0013] The toughening layer enhances the tear resistance of the inner liner paper, increases the tear resistance index and folding endurance, reduces the breakage rate during processing, and improves the bonding effect between layers through the stress dispersion effect of the toughening layer, thus preventing delamination.

[0014] By using a hot melt adhesive layer, the inner lining paper is secured, ensuring a tight fit between the folded paper and the inner wall of the cigarette box, preventing the cigarette from shifting. Furthermore, the hot melt adhesive is made of biodegradable materials, replacing traditional non-biodegradable EVA adhesive. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the exploded structure of this utility model; Figure 4 This is a schematic diagram of the installation structure of the inner lining paper body of this utility model; Figure 5 This utility model Figure 2 Enlarged structural diagram at point A; Figure 6 This utility model Figure 4 A magnified structural diagram at point B in the middle.

[0016] In the diagram: 1. Inner liner paper body; 2. Base paper layer; 3. Adsorption layer; 4. Antibacterial layer; 5. Toughening layer; 6. Barrier layer; 7. Wear-resistant layer; 8. Hot melt adhesive layer. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] This utility model provides the following technical solution: an environmentally friendly cigarette liner paper. Example 1: To address the problem of insufficient tear resistance in existing inner lining paper, the following is disclosed: an inner lining paper body 1, which is composed of a base paper layer 2, an absorbent layer 3, an antibacterial layer 4, a toughening layer 5, a barrier layer 6, and a wear-resistant layer 7 (e.g., ...). Figures 1-3 , Figure 5 and Figure 6 As shown), one side of the base paper layer 2 and one side of the absorbent layer 3 are bonded together (as shown). Figures 1-6 As shown), the other side of the adsorption layer 3 is bonded to one side of the antibacterial layer 4, the other side of the antibacterial layer 4 is bonded to one side of the toughening layer 5, the other side of the toughening layer 5 is bonded to one side of the barrier layer 6, the other side of the barrier layer 6 is bonded to one side of the wear-resistant layer 7, and a hot melt adhesive layer 8 (as shown) is provided on the other side of the wear-resistant layer 7. Figures 1-3 and Figure 6 As shown), the base paper layer 2 is made of softwood pulp base paper, and a plant fiber reinforcement layer is composited inside the base paper layer 2. The plant fiber reinforcement layer is made of hemp fiber material. The adsorption layer 3 is made of activated carbon nanofiber membrane, and polylactic acid is also added inside the adsorption layer 3. The toughening layer 5 is a biomimetic micro-nano structure. The toughening layer 5 is made of polycaprolactone film and cellulose nanofibers composite. The antibacterial layer 4 is made of chitosan and nano zinc oxide composite (as shown). Figure 3 , Figure 5 and Figure 6 As shown), the barrier layer 6 is made of microcrystalline wax and water-based polyvinyl alcohol composite, the wear-resistant layer 7 is made of water-based polyurethane, and a matting agent is added inside the wear-resistant layer 7.

[0019] The base paper layer 2, made of softwood pulp and hemp fiber, can support the subsequent adsorption layer 3, antibacterial layer 4, toughening layer 5, barrier layer 6, and abrasion-resistant layer 7, ensuring the overall stability of the inner liner paper body 1 (e.g., Figures 1-6 As shown), hemp fibers are interwoven with wood pulp fibers through wet papermaking, utilizing the high crystallinity of hemp fibers to improve tear resistance. Furthermore, the all-plant fiber system is biodegradable, avoiding the reliance on non-degradable components like glass fibers in traditional base paper. The adsorption layer 3 uses an activated carbon nanofiber membrane (such as...). Figure 3 , Figure 5 and Figure 6 As shown), the porous structure of activated carbon nanofibers adsorbs odor molecules such as aldehydes and esters generated during cigarette storage, improving the purity of the smoke. Simultaneously, the added polylactic acid ensures that the adsorption layer 3 has a high degradation rate under composting conditions, avoiding secondary pollution. The antibacterial layer 4 is made of a composite of chitosan and nano-zinc oxide (as shown). Figure 3 , Figure 5 and Figure 6 As shown), chitosan can disrupt bacterial cell walls, and nano-zinc oxide inhibits enzyme activity, increasing the inhibition rate against Escherichia coli and Staphylococcus aureus, thus preventing cigarettes from becoming moldy. Furthermore, nano-zinc oxide, through a slow-release mechanism, can enhance the sustained antibacterial effect. The toughening layer 5 is made of a composite of polycaprolactone film and cellulose nanofibers (as shown). Figure 3 , Figure 5 and Figure 6 As shown), the flexibility of polycaprolactone synergistically combines with the rigidity of cellulose nanofibers to improve the folding resistance of the inner lining paper body 1, solving the problem of increased brittleness after multilayer composite. Furthermore, the toughening layer 5 disperses external tearing forces throughout the interlayer through its micro-nano structure, preventing damage caused by localized stress concentration. The barrier layer 6 is made of a composite of microcrystalline wax and water-based polyvinyl alcohol (as shown). Figure 3 , Figure 5 and Figure 6As shown), the low air permeability of microcrystalline wax synergistically combines with the high moisture barrier properties of water-based polyvinyl alcohol to prevent cigarette aroma leakage and external moisture intrusion. It also replaces traditional aluminum foil and aluminized layers, reducing aluminum resource consumption. The material is recyclable and can be re-pulped. The wear-resistant layer 7 is made of water-based polyurethane (e.g., ...). Figures 1-3 , Figure 5 and Figure 6 As shown, it can increase the wear resistance of the wear-resistant layer 7, prevent surface damage during packaging and transportation, block external oil and moisture from eroding the internal functional layer, extend the service life of the inner lining paper, and control the gloss through the matting agent, thereby adapting to the matte and semi-matte appearance requirements of different cigarette brands.

[0020] Example 2: Unlike Example 1, the hot melt adhesive layer 8 serves to fix the inner lining paper body 1. It is disclosed that the hot melt adhesive layer 8 is made of a composite of polylactic acid and polycaprolactone (e.g., ...). Figures 1-3 and Figure 6 As shown in the figure, the hot melt adhesive layer 8 is evenly distributed around the wear-resistant layer 7 and is used to fix the hot melt adhesive layer 8.

[0021] Through the hot melt adhesive layer 8 distributed around the perimeter (such as Figures 1-3 As shown), without affecting the main function of the wear-resistant layer 7, the inner lining paper body 1 is firmly fixed to the inner wall of the cigarette box to prevent wrinkles of the inner lining paper body 1 and skewing of the cigarettes due to shaking during transportation. The hot melt adhesive layer 8 is made of polylactic acid and polycaprolactone composite (as shown). Figures 1-3 and Figure 6 As shown, both polylactic acid (PLA) and polycaprolactone (PCL) are bio-based biodegradable materials that can replace the microplastic pollution risk of traditional EVA hot melt adhesives. PLA provides rigid bonding, while PCL provides flexible adjustment. The composite hot melt adhesive layer 8 can withstand the pressure during cigarette box molding and avoid the brittleness of the inner lining paper body 1 caused by the adhesive layer being too hard.

[0022] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0023] The contents not described in detail in this specification are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An environmentally friendly cigarette liner paper, comprising a liner paper body (1); Its features are: The inner lining paper body (1) is composed of a base paper layer (2), an adsorption layer (3), an antibacterial layer (4), a toughening layer (5), a barrier layer (6), and a wear-resistant layer (7). One side of the base paper layer (2) and one side of the adsorption layer (3) are bonded to each other. The other side of the adsorption layer (3) and one side of the antibacterial layer (4) are bonded to each other. The other side of the antibacterial layer (4) and one side of the toughening layer (5) are bonded to each other. The other side of the toughening layer (5) and one side of the barrier layer (6) are bonded to each other. The other side of the barrier layer (6) and one side of the wear-resistant layer (7) are bonded to each other. A hot melt adhesive layer (8) is provided on the other side of the wear-resistant layer (7).

2. The environmentally friendly cigarette liner paper according to claim 1, characterized in that: The base paper layer (2) is made of softwood pulp base paper, and the base paper layer (2) is internally reinforced with a plant fiber layer, which is made of hemp fiber material.

3. The environmentally friendly cigarette liner paper according to claim 1, characterized in that: The adsorption layer (3) is made of activated carbon nanofiber membrane, and polylactic acid is added inside the adsorption layer (3).

4. The environmentally friendly cigarette liner paper according to claim 1, characterized in that: The wear-resistant layer (7) is made of water-based polyurethane, and a matting agent is added inside the wear-resistant layer (7).

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