Honeycomb paper roll preparation process and product thereof

Abstract

The invention relates to the technical field of honeycomb paper processing, in particular to a honeycomb paper roll preparation technology and a product thereof, and the honeycomb paper roll preparation technology comprises the following preparation steps that S1, kraft paper is prepared, the upper surface and the lower surface of the kraft paper are evenly coated with waterproof glue, and the kraft paper is dried and cured to obtain gelled kraft paper, and the waterproof glue is phenolic resin waterproof glue; s2, cutting and pressing the gelling kraft paper to form a honeycomb core material with a specific shape and size; s3, the honeycomb-shaped core material is stretched and shaped, and a pretreated honeycomb-shaped core material is obtained; s4, the pretreated honeycomb-shaped core material is soaked in a hydrophobic agent, the hydrophobic agent on the surface is wiped off, drying is conducted, then rolling is conducted, and the honeycomb paper roll is obtained.The honeycomb paper roll prepared through the scheme has the good moisture resistance, mechanical strength, structural stability and other performance in the use process, and meanwhile the honeycomb paper roll is good in moisture resistance, mechanical strength and structural stability. The honeycomb structure of the honeycomb paper can effectively disperse and absorb energy when being impacted by external force, and objects are prevented from being scratched or collided in the transportation process.

Description

Technical Field

[0001] The present application relates to the technical field of honeycomb paper processing, and more specifically, to a preparation process of a honeycomb paper roll and a product thereof. Background Art

[0002] With the global emphasis on environmental protection and the plastic restriction and ban orders issued by countries such as Europe, honeycomb paper packaging is becoming more and more widely used and has become one of the main forms of cushioning packaging. Honeycomb paper packaging is made of pure wood pulp paper, which is highly environmentally friendly and easy to recycle. It is also pollution-free during the production process and relatively easy to dispose of, which is in line with the development trend of green packaging. At the same time, the structure of honeycomb paper packaging is special. The three-dimensional hexagonal honeycombs are stacked together after stretching, which has excellent cushioning and shock-absorbing properties. It can effectively reduce the impact and damage to the items during transportation and ensure the safe transportation of the items.

[0003] However, honeycomb paper is easily affected by moisture in a humid environment, causing it to lose its original strength and rigidity, thus affecting its protective performance, especially in some rainy areas or humid storage environments. Summary of the invention

[0004] In order to solve the problem of poor moisture resistance of honeycomb paper, the present application provides a preparation process of a honeycomb paper roll and a product thereof.

[0005] In a first aspect, the present application provides a process for preparing a honeycomb paper roll, which adopts the following technical solution: A preparation process of a honeycomb paper roll comprises the following preparation steps: S1, preparing kraft paper, coating the upper and lower surfaces of the kraft paper evenly with waterproof glue, drying and curing, to obtain gelled kraft paper, wherein the waterproof glue is phenolic resin waterproof glue; S2, cutting and pressing the gelatinized kraft paper to form a honeycomb core material with a specific shape and size; S3, stretching and shaping the honeycomb core material to obtain a pretreated honeycomb core material; S4, soaking the pretreated honeycomb core material in a hydrophobic agent, wiping off the surface hydrophobic agent, drying, and then rolling up to obtain a honeycomb paper roll.

[0006] By adopting the above technical solution, the prepared honeycomb paper roll has good moisture-proof performance, mechanical strength, structural stability and other properties during use. At the same time, the honeycomb structure of the honeycomb paper can effectively disperse and absorb energy when impacted by external force, preventing items from being scratched or collided during transportation.

[0007] In step S1, waterproof glue is applied on the surface of kraft paper, which effectively prevents moisture from penetrating into the interior of kraft paper, thereby improving the moisture-proof performance of honeycomb paper, allowing honeycomb paper to remain dry in a humid environment, avoiding strength loss and deformation caused by water absorption, and at the same time, the waterproof glue enhances the internal fiber bonding force of kraft paper after curing into a film, thereby improving the strength and structural stability of honeycomb paper, making honeycomb paper less susceptible to damage when subjected to external impact. Through cutting and pressing in step S2, a honeycomb core material with a specific shape and size is formed, which can effectively disperse and withstand external loads, and improve the overall strength and structural stability of honeycomb paper. The stretching and shaping treatment in step S3 further enhances the fiber arrangement and internal structure of the honeycomb core material, reduces internal defects and stress concentration points, and thus improves its bearing capacity and anti-deformation ability.

[0008] Soaking the pretreated honeycomb core material in a hydrophobic agent and then drying it can further reduce the hydrophilicity of the cut of the honeycomb paper, making it more difficult for water or water vapor to adhere to or penetrate into the material from the cut. In this application, by first coating the waterproof glue, the kraft paper has waterproof properties and strength, and then cutting and pressing, the honeycomb paper will be affected when the cut contacts water or water vapor. The hydrophobic agent can improve the water repellency of the cut, further improving the waterproof and moisture-proof properties of the honeycomb paper. The hydrophobic agent on the surface of the visible waterproof glue can be wiped off by using a rag.

[0009] The honeycomb core material is formed by cutting and pressing the gelatinized kraft paper, and then stretched and shaped to give the kraft paper a honeycomb structure. The honeycomb paper has good compression and bending resistance, and can provide sufficient strength support while ensuring light weight.

[0010] Preferably, the waterproof glue is prepared from the following raw materials in weight percentage: Phenolic resin 20-30% Acrylic polyurethane resin 4-8% Nano-scale solid filler 10-15% Oil repellent 4-6% Silane coupling agent 1-2% Emulsifier 1-2% Curing agent 0.8-1% Water 10-15% The remainder is diluent.

[0011] By adopting the above technical solution, the waterproof glue obtained has good fluidity, adhesion and waterproofness, and can be stably attached to the surface of kraft paper.

[0012] As the main film-forming material of waterproof glue, phenolic resin has excellent water resistance and chemical stability, can form a tough and dense film layer, and effectively blocks water penetration. However, the curing performance of phenolic resin is poor, and the time required is long. In this regard, an appropriate amount of acrylic polyurethane resin and phenolic resin are added to prepare waterproof glue in this application, which can accelerate the curing efficiency of waterproof glue. In addition, acrylic polyurethane resin has good wettability, permeability and flexibility, can form a strong bonding force with the fiber on the surface of kraft paper, can increase the adhesion of waterproof glue, and give honeycomb paper certain flexibility at the same time, reduce the cracks caused by temperature changes or external forces. Subsequent hydrophobic agent will be used to process the kraft paper pressed by cutting, so as to enhance the waterproof performance at the incision, so the use of oil-proof agent can effectively reduce the hydrophobic agent remaining on the surface of the glue layer.

[0013] Nano-scale solid fillers can fill the gaps between resins, improve the density and hardness of waterproof glue, enhance the physical strength of the waterproof glue layer, make it more wear-resistant and scratch-resistant, and also improve the overall structural strength of honeycomb paper. Silane coupling agents play a bridging role in waterproof glue, improving the interfacial bonding between acrylic polyurethane resin, phenolic resin and nano-scale solid fillers, which helps to improve the overall performance and stability of waterproof glue.

[0014] The curing agent promotes the curing of acrylic polyurethane resin and phenolic resin, forming a three-dimensional network structure, so that the waterproof glue can be cured quickly and fully. The emulsifier plays a role in stabilizing the emulsion in the preparation process of the waterproof glue, ensuring that the components are evenly dispersed, thereby improving the adhesion performance of the waterproof glue, and making it easy to apply and penetrate the waterproof glue during the construction process, so that it can be evenly covered on the surface of the kraft paper to form a dense waterproof layer. Water plays a role in diluting and dispersing the components in the preparation process of the waterproof glue.

[0015] Preferably, the waterproof glue is prepared by the following method: 1) heating and stirring the phenolic resin, acrylic polyurethane resin and diluent to obtain a mixture A; 2) Mix water, emulsifier, nano-scale solid filler, oil-proof agent and silane coupling agent evenly, then add mixture A and curing agent, mix evenly, and obtain waterproof glue.

[0016] By adopting the above technical scheme, the softening and dissolution of the phenolic resin and the acrylic polyurethane resin are first promoted by heating and stirring, and then the water, emulsifier, nano-scale solid filler, oil-proof agent and silane coupling agent are evenly mixed, and then the mixture A and the curing agent are added and further stirred evenly, which is beneficial to reduce the agglomeration and stratification between the components and ensure the uniform distribution of the components in the waterproof glue, thereby improving the uniformity and stability of the waterproof glue.

[0017] Preferably, the emulsifier is obtained by mixing fatty acid sorbitan, gelatin and sodium carboxymethyl cellulose in a weight ratio of (4-6): (2-3): 0.5.

[0018] By adopting the above technical scheme and optimizing the type and dosage of emulsifier, fatty acid sorbitan has good emulsification performance and stability. It can effectively reduce the tension of the oil-water interface, promote the mixing of the oil phase and the water phase, and form a stable emulsion system; gelatin has good film-forming and adhesion properties, which helps the waterproof glue to form a uniform waterproof layer on the surface of kraft paper; sodium carboxymethyl cellulose, as a water-soluble polymer compound, mainly plays the role of a stabilizer in the emulsification system, which can increase the viscosity of the emulsion, prevent emulsion stratification and demulsification, and improve the stability of the emulsion. By combining the emulsification properties of fatty acid sorbitan, the film-forming and adhesion properties of gelatin, and the stability and thickening effect of sodium carboxymethyl cellulose, the stability of the waterproof glue can be improved to effectively block the penetration and erosion of water, thereby enhancing the waterproof performance of the waterproof glue. Even in a humid environment, the waterproof glue can maintain its original performance and structural stability.

[0019] Preferably, the nano-scale solid filler is obtained by mixing a solid filler with an average particle size of 10-100 nm and a solid filler with an average particle size of 100-300 nm in a weight ratio of (5-8):1.

[0020] By adopting the above technical solution, the average particle size and dosage of nano solid fillers are optimized to further improve the adhesion and strength of waterproof adhesives. Solid fillers with an average particle size of 10-100nm can more effectively fill the tiny gaps in the resin matrix, increase the contact area of ​​the interface, and improve the interaction between the filler and the resin. Solid fillers with an average particle size of 100-300nm can increase the packing density of the filler and improve the overall hardness of the waterproof adhesive. The combination of the two can improve strength and hardness while maintaining toughness.

[0021] Preferably, the curing agent is at least one of toluene diisocyanate, diphenylmethane diisocyanate, aziridine, catechol and tetraisopropoxytitanium.

[0022] By adopting the above technical solution, the curing of the phenolic resin of the acrylic polyurethane resin is promoted, the density and hardness of the waterproof glue are further improved, the physical strength of the waterproof glue layer is enhanced, making it more wear-resistant and scratch-resistant, and the overall structural strength of the honeycomb paper is also improved.

[0023] Preferably, the acrylic polyurethane resin has a hydroxyl value of 20-50 mgKOH / g, a functionality of 5-9, and a viscosity of 8000-20000 cps at 25°C.

[0024] By adopting the above technical solution, the parameters of the acrylic polyurethane resin are optimized, the curing efficiency of the waterproof glue is further improved, and at the same time, the adhesion of the waterproof glue to kraft paper is improved.

[0025] Preferably, in step S3, the hydrophobic agent is obtained by mixing ethanol and the lipophilic agent in a weight ratio of (20-30): (9-10).

[0026] By adopting the above technical solution, the prepared hydrophobic agent can penetrate from the cut to the inside of the kraft paper, and after drying and ethanol evaporation, the oleophilic agent adheres to the cut surface, naturally forming a protective film, effectively reducing the influence of moisture or water vapor on the cut, which leads to the decrease of the strength, toughness and seismic resistance of the honeycomb paper. At the same time, the hydrophobic agent will not adhere to the surface of the waterproof layer, and the hydrophobic agent on the surface of the waterproof layer can be wiped off during the preparation process.

[0027] Preferably, the lipophilic agent comprises at least one of soybean oil, olive oil, palm oil, castor oil, buckwheat oil, coconut oil and tea oil.

[0028] By adopting the above technical solution, the type of oleophilic agent is optimized, and the oleophilic agent is further attached to the cut of kraft paper, thereby improving the waterproof performance of the cut. The above oleophilic agents all contain hydroxyl groups, and kraft paper contains a large number of hydroxyl groups, which makes it easier for the oleophilic agent containing hydroxyl groups to penetrate into it, thereby improving the waterproof performance of honeycomb paper.

[0029] In a second aspect, the present application provides a honeycomb paper roll, which adopts the following technical solution: A honeycomb paper roll is prepared by the honeycomb paper roll preparation process described in the first aspect.

[0030] By adopting the above technical solution, the honeycomb paper roll has good moisture resistance, mechanical strength, structural stability and other properties, and can be used in a humid environment or an environment with high humidity.

[0031] In summary, this application has the following beneficial effects: 1. Enhanced strength of kraft paper: Through the coating and curing of waterproof glue, not only the waterproofness of kraft paper is improved, but also the bonding force between its fibers is enhanced, making the kraft paper itself tougher.

[0032] 2. Optimization of honeycomb structure: The cutting and pressing process in step S2 ensures that the honeycomb core material has a precise shape and size, forming a stable honeycomb structure, effectively dispersing external forces, and improving the overall load-bearing capacity and structural stability of the honeycomb paper.

[0033] 3. The stretching and shaping treatment in step S3 further improves the internal structure of the honeycomb core material, eliminates internal stress concentration points, and thus enhances its mechanical properties and durability. DETAILED DESCRIPTION

[0034] Preparation Example Phenolic resin was purchased from Dongguan Xiangteng Plastic Co., Ltd., model XT-101.

[0035] Preparation Example 1 A waterproof glue is prepared by the following method: 1) 200 g of phenolic resin, 80 g of acrylic polyurethane resin and 310 g of diluent (butyl acetate) were heated and stirred to obtain a mixture A; 2) 150 g of water, 20 g of emulsifier (sorbitan fatty acid), 150 g of nano-scale solid filler (silicon dioxide, average particle size of 10-50 nm), 60 g of oil repellent (chitosan) and 20 g of silane coupling agent (vinyl trimethoxy silane) are stirred evenly, and then mixture A and 10 g of curing agent (toluene diisocyanate) are added and stirred evenly to obtain a waterproof glue.

[0036] The difference between Preparation Example 2-3 and Preparation Example 1 is that the types of raw materials, amounts and experimental parameters for preparing the waterproof glue are different. The specific differences are shown in Table 1: Table 1 Types, amounts and experimental parameters of raw materials used in preparing waterproof adhesives in Preparation Examples 1-3 Preparation Example 4 A waterproof glue, the difference between this preparation example and preparation example 1 is that the emulsifier is obtained by mixing fatty acid sorbitan, gelatin and sodium carboxymethyl cellulose in a weight ratio of 4:2:0.5.

[0037] Preparation Example 5 A waterproof glue, the difference between this preparation example and preparation example 1 is that the emulsifier is obtained by mixing fatty acid sorbitan, gelatin and sodium carboxymethyl cellulose in a weight ratio of 6:3:0.5.

[0038] Preparation Example 6 A waterproof glue, the difference between this preparation example and preparation example 1 is that the emulsifier is obtained by mixing fatty acid sorbitan, gelatin and sodium carboxymethyl cellulose in a weight ratio of 2:2:0.5.

[0039] Preparation Example 7 A waterproof glue, the difference between this preparation example and preparation example 1 is that the emulsifier is obtained by mixing fatty acid sorbitan and gelatin in a weight ratio of 4:2.

[0040] Preparation Example 8 A waterproof glue. The difference between this preparation example and preparation example 1 is that the nano-scale solid filler is obtained by mixing a solid filler with an average particle size of 10-50nm and a solid filler with an average particle size of 100-200nm in a weight ratio of 5:1.

[0041] Preparation Example 9 A waterproof glue, the difference between this preparation example and preparation example 1 is that the nano-scale solid filler is obtained by mixing a solid filler with an average particle size of 50-90nm and a solid filler with an average particle size of 200-300nm in a weight ratio of 6.5:1.

[0042] Preparation Example 10 A waterproof glue, the difference between this preparation example and preparation example 4 is that the nano-scale solid filler is obtained by mixing a solid filler with an average particle size of 50-90nm and a solid filler with an average particle size of 200-300nm in a weight ratio of 5:1.

[0043] Preparation Example 11 A waterproof glue, the difference between this preparation example and preparation example 1 is that the nano-scale solid filler is a solid filler with an average particle size of 100-200nm.

[0044] Preparation Comparative Example Preparation Comparative Example 1 A waterproof glue, the difference between this preparation comparative example and preparation example 1 is that polyurethane resin is used instead of phenolic resin.

[0045] The polyurethane resin was purchased from Dongguan Haosheng Plastic Raw Materials Co., Ltd., model TPU 5703.

[0046] Preparation Comparative Example 2 A waterproof glue, the difference between this preparation comparative example and preparation example 1 is that polyurethane resin is used instead of acrylic polyurethane resin.

[0047] The polyurethane resin was purchased from Dongguan Haosheng Plastic Raw Materials Co., Ltd., model TPU 5703.

[0048] Preparation Comparative Example 3 A waterproof glue, the difference between this preparation comparative example and preparation example 1 is that butyl acetate is used instead of the oil-proof agent.

[0049] Preparation Comparative Example 4 A waterproof glue, the difference between this preparation comparative example and preparation example 1 is that the average particle size of the solid filler used is 1 micron. Example

[0050] The kraft paper was purchased from Hangzhou Jixin Paper Co., Ltd. and the model was original wood pulp natural color kraft paper.

[0051] The commercially available phenolic resin waterproof glue was purchased from Fengze Glue Factory in Lanshan District, Linyi City, and the grade was E1.

[0052] Example 1 A honeycomb paper roll is prepared by the following method: S1. Prepare kraft paper and evenly apply commercially available phenolic resin waterproof glue on the upper and lower surfaces of the kraft paper. The wet coating weight is 40g / m 2 , drying and curing to obtain gelatinized kraft paper; S2, cutting and pressing the gelatinized kraft paper to form a honeycomb core material with a specific shape and size; S3, stretching and shaping the honeycomb core material to obtain a pretreated honeycomb core material; S3, soaking the pretreated honeycomb core material in a hydrophobic agent, wiping off the surface hydrophobic agent, drying, and then rolling up to obtain a honeycomb paper roll.

[0053] The hydrophobic agent is obtained by mixing ethanol and a lipophilic agent (soybean oil) in a weight ratio of 20:9.

[0054] The difference between Example 2-3 and Example 1 is that the types of raw materials, amounts and experimental parameters for preparing the honeycomb paper rolls are different. The specific differences are shown in Table 2: Table 2 Types, amounts and experimental parameters of raw materials for preparing honeycomb paper rolls in Examples 1-3 The difference between Example 4-18 and Example 1 is that the sources of the waterproof glue are different, and the specific sources are shown in Table 3: Table 3 Source of waterproof glue in Example 4-18 Comparative Example Comparative Example 1 A honeycomb paper roll. The difference between this comparative example and Example 1 is that the step of pre-treating the honeycomb core material by soaking it in a hydrophobic agent is removed in step S3.

[0055] Comparative Example 2 A honeycomb paper roll. The difference between this comparative example and Example 1 is that the waterproof glue is polyurethane waterproof glue, which is purchased from Jining Sunbright Biotechnology Co., Ltd. with a product number of AL570824794148.

[0056] Detection method / test method Moisture-proof test: 15 g of the honeycomb paper prepared in Examples 1-18 and Comparative Example 1 was placed in an environment with a humidity of 90% and a temperature of 30° C., left to stand for 48 hours, and then weighed, and the weight change before and after was recorded.

[0057] Earthquake resistance test: prepare an ordinary glass cup with a height of 10 cm and a diameter of 5 cm, unfold the honeycomb paper to wrap the glass cup, wrap it in 3 layers to obtain a sample, and then let the sample fall freely from a horizontal height of 1.5 m to a cement surface, and observe whether the glass cup has cracks.

[0058] Fracture strength test: The honeycomb paper prepared in Examples 1-17 and Comparative Example 1 was cut into samples with a width of 1.5 cm and a length of 10 cm. The samples were placed in the clamp of the tensile testing machine using a tensile testing machine. The samples were clamped tightly and the clamping lines were parallel and coplanar. The tensile testing machine was started and the force when the samples broke was recorded. The experimental data are shown in Table 4: Table 4 Experimental data of Examples 1-18 and Comparative Example 1 Comparing Example 1 with Comparative Example 1, the weight of Comparative Example 1 increased to 3.34 g after the moisture-proof test, which is much larger than the weight increase of Example 1, indicating that the honeycomb paper roll prepared by the preparation method of the present application has good moisture-proof performance.

[0059] By comparing Example 1 with Comparative Example 2, the weight of Comparative Example 2 increased to 1.69 g after the moisture-proof test, and cracks appeared in Comparative Example 1 in the earthquake-proof test, indicating that the honeycomb paper roll prepared by the preparation method of the present application has good moisture-proof performance and good earthquake-resistant performance.

[0060] Comparing Example 1 with Examples 4-6, the weight of Examples 4-6 increased by 0.86-0.87 g after the moisture-proof test, and the breaking strength increased to above 69.3 MPa, indicating that the honeycomb paper roll obtained by the preparation method of the present application has good moisture-proof performance and breaking strength.

[0061] Comparing Example 1 with Examples 7-10, the weight change of Examples 7-8 after moisture-proof test is less than that of Examples 1, 9, and 10, and the breaking strength is greater than that of Examples 1, 9, and 10, indicating that the moisture-proof performance and breaking strength of the honeycomb paper roll are improved by optimizing the type and amount of the emulsifier in the application.

[0062] Comparing Example 1 with Examples 11-12 and 14, the weight change of Examples 11-12 after moisture resistance test is less than that of Examples 1 and 14, and the breaking strength is greater than that of Examples 1 and 14; Comparing Example 4 with Example 13, the weight change of Example 13 after moisture resistance test is smaller than that of Example 4, and the breaking strength is greater than that of Example 13; It can be seen from the experimental data of Examples 1, 11-12, 14 and Examples 4, 13 that optimizing the type and amount of nano solid fillers is beneficial to improving the moisture resistance and breaking strength of the honeycomb paper roll.

[0063] Comparing Example 4 with Examples 15-18, the weight change of Examples 15-18 after moisture-proof test is greater than that of Example 4, and the breaking strength is less than that of Example 4. In the seismic test, both Examples 15 and 16 showed cracks, indicating that the waterproof glue prepared by the formula of the present application is beneficial to improving moisture-proof performance, seismic performance and breaking strength.

[0064] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A process for preparing a honeycomb paper roll, characterized in that: The method comprises the following preparation steps: S1, preparing kraft paper, coating the upper and lower surfaces of the kraft paper evenly with waterproof glue, drying and curing, to obtain gelled kraft paper, wherein the waterproof glue is phenolic resin waterproof glue; S2, cutting and pressing the gelatinized kraft paper to form a honeycomb core material with a specific shape and size; S3, stretching and shaping the honeycomb core material to obtain a pretreated honeycomb core material; S3, soaking the pretreated honeycomb core material in a hydrophobic agent, wiping off the surface hydrophobic agent, drying, and then rolling up to obtain a honeycomb paper roll.

2. The process for preparing a honeycomb paper roll according to claim 1, characterized in that: The waterproof glue is prepared from the following raw materials in weight percentage: Phenolic resin 20-30% Acrylic polyurethane resin 4-8% Nano-scale solid filler 10-15% Oil repellent 4-6% Silane coupling agent 1-2% Emulsifier 1-2% Curing agent 0.8-1% Water 10-15% The remainder is diluent.

3. The process for preparing a honeycomb paper roll according to claim 2, characterized in that: The waterproof glue is prepared by the following method: 1) Heat and stir the phenolic resin, acrylic polyurethane resin and diluent to obtain a mixture A; 2) Mix water, emulsifier, nano-scale solid filler, oil-proof agent and silane coupling agent evenly, then add mixture A and curing agent, mix evenly, and obtain waterproof glue.

4. The process for preparing a honeycomb paper roll according to claim 2, characterized in that: The emulsifier is obtained by mixing fatty acid sorbitan, gelatin and sodium carboxymethyl cellulose in a weight ratio of (4-6): (2-3): 0.

5.

5. The process for preparing a honeycomb paper roll according to claim 2, characterized in that: The nano-scale solid filler is obtained by mixing a solid filler with an average particle size of 10-100 nm and a solid filler with an average particle size of 100-300 nm in a weight ratio of (5-8):

1.

6. The process for preparing a honeycomb paper roll according to claim 2, characterized in that: The curing agent is at least one of toluene diisocyanate, diphenylmethane diisocyanate, aziridine, catechol and tetraisopropoxy titanium.

7. The process for preparing a honeycomb paper roll according to claim 2, characterized in that: The acrylic polyurethane resin has a hydroxyl value of 20-50 mgKOH / g, a functionality of 5-9, and a viscosity of 8000-20000 cps at 25°C.

8. The process for preparing a honeycomb paper roll according to claim 1, characterized in that: In step S3, the hydrophobic agent is obtained by mixing ethanol and the lipophilic agent in a weight ratio of (20-30): (9-10).

9. The process for preparing a honeycomb paper roll according to claim 8, characterized in that: The lipophilic agent comprises at least one of soybean oil, olive oil, palm oil, castor oil, buckwheat oil, coconut oil and tea oil.

10. A honeycomb paper roll prepared by the honeycomb paper roll preparation process according to any one of claims 1 to 9, characterized in that: The honeycomb paper roll is prepared by the honeycomb paper roll preparation process according to any one of claims 1 to 9.

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