Manufacturing process of high-strength moisture-proof corrugated paper and corrugated paper

Abstract

The invention discloses a high-strength moisture-proof corrugated paper manufacturing process and corrugated paper, and relates to the field of corrugated paper production.In the production process, firstly, selected long-fiber wood pulp raw materials are fed into a high-temperature and high-pressure steam furnace to be pretreated, so that a hydrogen bond network between fibers is damaged, the fibers are more tightly combined together, and then the high-strength moisture-proof corrugated paper is obtained; the preparation method comprises the following steps: preparing corrugated medium paper with a specific waveform through a forming machine, uniformly coating two sides of the corrugated medium paper with a mixed moisture-proof surface layer material, and carrying out hot-pressing curing to obtain a finished product. In actual use, the specially-made moisture-proof surface layer can form a layer of compact barrier on the surface of the paper to prevent external water molecules from entering; therefore, the corrugated paper can be endowed with excellent moisture resistance and high strength, the service life of the corrugated paper is greatly prolonged, and meanwhile, good ecological friendliness is also shown.

Description

Technical Field

[0001] The present application relates to the field of corrugated paper production, and in particular to a high-strength moisture-proof corrugated paper manufacturing process and corrugated paper. Background Art

[0002] With the rapid development of the logistics industry, the demand for packaging materials is increasing, especially packaging materials with moisture-proof properties, which are one of the key market demands. Although the corrugated paper on the market currently meets the basic requirements of packaging to a certain extent, it still generally has the problem of moisture absorption, softening, and reduced strength when facing a high humidity environment. These problems not only affect the transportation safety of the products, but also increase costs and restrict the development of the industry. In order to overcome these challenges, researchers are constantly exploring new technologies and materials to improve the comprehensive performance of corrugated paper, especially in terms of enhancing moisture resistance and improving overall strength.

[0003] At present, there are two main improvement solutions on the market for the problems of moisture resistance and insufficient strength of corrugated paper: one is to form a protective film on the corrugated paper by adding waterproofing agents or applying moisture-proof coatings to prevent moisture penetration, thereby achieving the purpose of moisture-proofing; the other is to optimize the internal structure design of corrugated paper, such as increasing the number of layers, adjusting the shape of the corrugations and other measures to enhance the physical strength. These two methods have their own advantages and disadvantages. Although the method of adding waterproofing agents can effectively prevent the intrusion of water vapor, it may affect the air permeability and recyclability of corrugated paper. Although the optimized structural design can significantly improve the strength, it has limited effect on moisture-proofing, especially when exposed to water vapor for a long time.

[0004] Although the above methods can improve the moisture resistance and strength of corrugated paper to a certain extent, there are still obvious limitations. First, the method that relies solely on chemical treatment is prone to environmental pollution and is not conducive to the promotion of environmental protection concepts. Secondly, although the adjustment of the physical structure improves the compressive strength, it does not fundamentally solve the moisture absorption problem. Long-term exposure to high humidity environment will still lead to performance degradation. Summary of the invention

[0005] The purpose of this application is to solve the problem that the method proposed in the above-mentioned background technology that relies solely on chemical treatment is prone to cause environmental pollution and is not conducive to the promotion of environmental protection concepts. Secondly, although the adjustment of the physical structure improves the compressive strength, it does not fundamentally solve the moisture absorption problem. Long-term exposure to a high humidity environment will still lead to performance degradation. This application provides a high-strength moisture-proof corrugated paper manufacturing process and corrugated paper.

[0006] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions: A high-strength moisture-proof corrugated paper manufacturing process and corrugated paper, the manufacturing process comprising: S1: Prepare high-quality long-fiber wood pulp raw materials and ensure they are dry; S2: placing the raw materials into a steam furnace for pretreatment; S3: Take out the processed fibers and immediately send them to a forming machine for processing to form a corrugated core paper of a predetermined shape; S4: Mix the moisture-proof surface material in a certain proportion, stir evenly and spray it on both sides of the corrugated core paper; S5: sent to hot pressing equipment for final curing; S6: After cooling to room temperature, check the product quality and qualified products can be put into storage for future use.

[0007] By adopting the above technical scheme, the long fiber wood pulp raw material is cooked in a steam furnace, and the pressure in the steam furnace is gradually increased to high temperature and high pressure conditions to destroy the hydrogen bond network between the fibers and make the fibers more tightly combined together. The moisture-proof surface material is evenly sprayed on the surface of the corrugated core paper by using a spraying device, and then the corrugated core paper sprayed with the moisture-proof surface material is sent to a hot pressing device, and the moisture-proof surface material on the corrugated core paper is cured by using the hot pressing equipment, thereby giving the corrugated paper excellent moisture-proof performance and high strength characteristics, while also showing good eco-friendliness.

[0008] Furthermore, in the steam furnace pretreatment in S2, the temperature is controlled between 180-200° C. for no less than 45 minutes, and the temperature of the hot pressing equipment in S5 is set to 150-160° C. for about 30 seconds.

[0009] By adopting the above technical scheme, the cooking time and temperature of the long fiber wood pulp raw material are strictly controlled, and the heating and curing time of the moisture-proof surface material on the corrugated core paper is strictly controlled, so that the fibers can be more closely combined together and the possibility of the moisture-proof curing material falling off the corrugated core paper can be reduced.

[0010] Furthermore, a loosening cabin is provided on the steam furnace, the steam furnace and the loosening cabin are fixedly connected and communicated with each other, a loosening mechanism is provided in the loosening cabin, and a loading port is opened on the loosening cabin.

[0011] By adopting the above technical scheme, while the long-fiber wood pulp raw material is being fed into the loosening chamber, the loosening mechanism in the loosening chamber is used to loosen the long-fiber wood pulp raw material passing through, so that the long-fiber wood pulp raw material enters the steam furnace in a loose state, thereby reducing the possibility of agglomeration of the long-fiber wood pulp raw material when it is fed into the steam furnace, resulting in uneven heating of the long-fiber wood pulp raw material.

[0012] Furthermore, the loosening mechanism includes a support rod arranged in the loosening compartment, and a loosening disk is rotatably connected to the support rod; a driving assembly is arranged between the loosening disk and the loosening compartment, the loosening disk is truncated cone-shaped, and an auxiliary loosening assembly is arranged between the loosening disk and the loosening compartment.

[0013] By adopting the above technical scheme, the long-fiber wood pulp raw material falls directly on the side of the loosening disk, and under the action of the inclined surface of the loosening disk, the long-fiber wood pulp raw material is evenly scattered. At the same time, the driving component is used to drive the loosening disk to rotate, so that the long-fiber wood pulp raw material in contact with the loosening disk rotates and falls into the steam furnace, so that the long-fiber wood pulp raw material passing through the loosening chamber can be evenly scattered in the steam furnace, thereby improving the uniform heating rate of the long-fiber wood pulp raw material.

[0014] Furthermore, the driving assembly includes a driving motor fixed on the loose cabin, a rotating rod is rotatably connected to the supporting rod, and an output end of the driving motor passes through the loose cabin and is fixedly connected to the rotating rod.

[0015] By adopting the above technical solution, the driving motor can drive the loosening disk to rotate, thereby conveniently driving the loosening disk to rotate, and allowing the loosening disk to drive the long-fiber wood pulp raw material.

[0016] Furthermore, the auxiliary loosening component includes a support ring arranged at one end of the loosening disk away from the support rod, the support ring is rotatably connected to the inner wall of the loosening chamber, a plurality of circumferentially distributed dispersion rods are fixed on the inner wall of the support ring, the plurality of dispersion rods are staggered, and three circumferentially distributed synchronization blocks are fixed on the support ring, and the end of the synchronization block away from the support ring is fixedly connected to the loosening disk.

[0017] By adopting the above technical solution, the loose disk drives the synchronous block, the synchronous agglomeration drives the support ring, and while the support ring rotates, the support ring drives the dispersion rod to further stir the long fiber wood pulp raw material falling from the loose disk, thereby further reducing the agglomeration of the long fiber wood pulp raw material and causing the possibility of uneven heating in the steam furnace.

[0018] Furthermore, a plurality of evenly distributed loose bosses are fixed on the side wall of the loose disk.

[0019] By adopting the above technical solution, the loosening disk rotates, and the loosening protrusions on the loosening disk further stir and loosen the long-fiber wood pulp raw material, thereby further dispersing the long-fiber wood pulp raw material falling on the loosening disk.

[0020] A high-strength moisture-proof corrugated paper, the corrugated paper consists of three layers, the middle layer is high-density corrugated core paper, the high-density corrugated core paper uses long-fiber pine pulp as a base material, and moisture-proof surface layers are fixed on both sides of the high-density corrugated core paper, and the moisture-proof surface layers are composed of natural bamboo fiber and polylactic acid.

[0021] By adopting the above technical solution, the high-density corrugated core paper can have good moisture-proof performance and high strength characteristics, and also has good eco-friendliness.

[0022] In summary, the present application includes at least one of the following beneficial effects: 1. The present application, by feeding the selected long-fiber wood pulp raw material into a high-temperature and high-pressure steam furnace, sealing the steam furnace before starting the cooking, and then using the steam furnace to cook the long-fiber wood pulp raw material, allowing the pressure in the steam furnace to gradually increase to high-temperature and high-pressure conditions to destroy the hydrogen bond network between the fibers, so that the fibers are more tightly combined together, thereby improving the close bonding and durability between the fibers, taking out the cooked fibers, using a washing process to remove impurities attached to the fibers, and then turning the fibers into dry paper, and then feeding the dry paper into a corrugated machine to form corrugated core paper, and then preparing a moisture-proof surface material in a certain proportion, using a spraying device to evenly spray the moisture-proof surface material on the surface of the corrugated core paper, and then feeding the corrugated core paper sprayed with the moisture-proof surface material into a hot pressing device, and using the hot pressing device to cure the moisture-proof surface material on the corrugated core paper, thereby achieving the purpose of giving the corrugated paper excellent moisture-proof performance and high-strength characteristics, greatly extending the service life of the corrugated paper, and also demonstrating good eco-friendliness.

[0023] 2. In the present application, the long-fiber wood pulp raw material is fed from the feeding port of the loosening chamber into the loosening chamber by an external conveyor belt. When the long-fiber wood pulp raw material is fed into the loosening chamber, the long-fiber wood pulp raw material directly falls on the side of the loosening disk. Under the action of the inclined surface of the loosening disk, the long-fiber wood pulp raw material is evenly scattered. At the same time, the driving component is used to drive the loosening disk to rotate, so that the long-fiber wood pulp raw material in contact with the loosening disk rotates and falls into the steam furnace, so that the long-fiber wood pulp raw material can be evenly scattered in the steam furnace. When the driving motor drives the loosening disk to rotate, the loosening disk drives the synchronous block, and the synchronous agglomeration drives the support ring, so that the support ring rotates under the support of the loosening chamber. When the support ring rotates, the support ring drives the dispersion rod to further stir the long-fiber wood pulp raw material falling from the loosening disk, so that the long-fiber wood pulp raw material falls more evenly in the steam furnace, thereby achieving the purpose of reducing the possibility of agglomeration of the long-fiber wood pulp raw material when it is fed into the steam furnace, resulting in uneven heating of the long-fiber wood pulp raw material.

[0024] 3. In the present application, evenly distributed loosening protrusions are fixed on a loosening disk. When the long-fiber wood pulp raw material falls on the loosening disk, the loosening disk rotates, and the loosening protrusions on the loosening disk further stir and loosen the long-fiber wood pulp raw material, thereby achieving the purpose of further dispersing the long-fiber wood pulp raw material that falls on the loosening disk. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a first three-dimensional structural schematic diagram of the steam furnace in this application; Figure 2 It is a schematic diagram of the first partial internal structure of the steam furnace in the present application; Figure 3 is a schematic diagram of the second partial internal structure of the steam furnace in the present application; Figure 4 This application Figure 2 The enlarged schematic diagram at A in the middle; Figure 5 This application Figure 3 Enlarged schematic diagram of point B in the middle.

[0026] Description of reference numerals: 1. Steam furnace; 2. Loosening chamber; 3. Loosening mechanism; 31. Support rod; 32. Loosening plate; 33. Driving assembly; 331. Driving motor; 332. Rotating rod; 34. Auxiliary loosening assembly; 341. Support ring; 342. Dispersion rod; 343. Synchronous block; 35. Loosening boss; 4. Feeding port. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1 —5 further describes this application in detail.

[0028] The embodiments of the present application disclose a high-strength moisture-proof corrugated paper manufacturing process and corrugated paper.

[0029] Reference Figure 1 , a high-strength moisture-proof corrugated paper manufacturing process and corrugated paper, the manufacturing process comprises: S1: Prepare high-quality long-fiber wood pulp raw materials and ensure they are dry; S2: putting the raw materials into the steam furnace 1 for pretreatment; S3: Take out the processed fibers and immediately send them to a forming machine for processing to form a corrugated core paper of a predetermined shape; S4: Mix the moisture-proof surface material in a certain proportion, stir evenly and spray it on both sides of the corrugated core paper; S5: sent to hot pressing equipment for final curing; S6: After cooling to room temperature, check the product quality and qualified products can be put into storage for future use.

[0030] When producing corrugated paper, firstly, the selected long-fiber wood pulp raw material is sent into the high-temperature and high-pressure steam furnace 1. Before starting the cooking, the steam furnace 1 is sealed, and then the long-fiber wood pulp raw material is cooked by the steam furnace 1, and the pressure in the steam furnace 1 is gradually increased to the high-temperature and high-pressure conditions to destroy the hydrogen bond network between the fibers, so that the fibers are more tightly combined together, and the tight bonding and durability between the fibers are improved. The cooking liquid in the steam furnace 1 is discharged from the steam furnace 1, and then the pressure in the steam furnace 1 is reduced, and then the steam furnace 1 is opened, and the cooked fibers are taken out, and the impurities attached to the fibers are removed by the washing process, and then the treated fibers are diluted and mixed to form pulp, and then the pulp is transported to the papermaking machine, and the pulp is formed into wet paper sheets for drying to become dry paper, and then the dry paper is sent to the corrugator to form corrugated core paper, and then the moisture-proof surface material is prepared according to a certain proportion. Among the moisture-proof surface materials, the natural plant fiber is preferably bamboo fiber because it has Good softness and skin-friendly feel, at the same time, bamboo has a short growth cycle, which is in line with the principle of sustainable development. Polylactic acid (PLA) is selected as biodegradable plastic, which is a polymer derived from natural resources such as corn starch. It can be decomposed into carbon dioxide and water under natural conditions and will not cause environmental pollution. Then, the moisture-proof surface material is evenly sprayed on the surface of the corrugated core paper using a spraying device, and then the corrugated core paper sprayed with the moisture-proof surface material is sent to the hot pressing equipment. The moisture-proof surface material on the corrugated core paper is cured by the hot pressing equipment. After the curing is completed, the corrugated core paper is cooled to room temperature, and the quality of the corrugated core paper is checked. After the quality is qualified, it is put into storage for standby. High-density corrugated core paper is made by using long-fiber wood pulp treated with high temperature and high pressure, and then the outer layer of the corrugated core paper is covered with a moisture-proof surface layer composed of bamboo fiber and polylactic acid, so that the corrugated paper can be given excellent moisture-proof performance and high-strength characteristics, which greatly extends the service life of the corrugated paper, and also shows good eco-friendliness.

[0031] In S2, the steam oven 1 is pretreated with a temperature controlled between 180-200°C for no less than 45 minutes, and in S5, the temperature of the hot pressing equipment is set to 150-160°C for a duration of about 30 seconds. When the long-fiber wood pulp raw material is being cooked, the temperature in the steam furnace 1 is controlled at 180-200°C and monitored in real time. The cooking time should be no less than 45 minutes, so that the long-fiber wood pulp raw material in the steam furnace 1 can be fully cooked and heated, and the hydrogen bond network between the fibers can be fully and efficiently destroyed. When the moisture-proof surface material is evenly sprayed on the corrugated paper core, the corrugated core paper is passed through a hot pressing device, and the temperature in the hot pressing device is set to 150-160°C. The corrugated core paper is then allowed to stay in the hot pressing device for about 30 seconds to allow the moisture-proof surface material on the corrugated core paper to be fully cured. By strictly controlling the cooking time and temperature of the long-fiber wood pulp raw material and strictly controlling the heating and curing time of the moisture-proof surface material on the corrugated core paper, the fibers can be more closely combined together, and the possibility of the moisture-proof curing material falling off the corrugated core paper can be reduced.

[0032] Reference Figure 1 , Figure 2 and Figure 3 The steam furnace 1 is provided with a loosening chamber 2, which is fixedly connected with the loosening chamber 2 and communicated with each other. A loosening mechanism 3 is provided in the loosening chamber 2, and a loading port 4 is provided on the loosening chamber 2. When the long-fiber wood pulp raw material is fed into the steam furnace 1, the long-fiber wood pulp raw material is first fed into the loosening chamber 2 from the loading port 4 of the loosening chamber 2 by an external conveyor belt. When the long-fiber wood pulp raw material is fed into the loosening chamber 2, the loosening mechanism 3 in the loosening chamber 2 is used to loosen the long-fiber wood pulp raw material passing through, so that the long-fiber wood pulp raw material enters the steam furnace 1 loosely. By allowing the long-fiber wood pulp raw material to pass through the loosening chamber 2 before entering the steam furnace 1, and using the loosening mechanism 3 in the loosening chamber 2 to break up the long-fiber wood pulp raw material passing through, the possibility of agglomeration of the long-fiber wood pulp raw material when it is fed into the steam furnace 1, which causes uneven heating of the long-fiber wood pulp raw material, can be reduced.

[0033] Reference Figure 2 , Figure 3 , Figure 4 and Figure 5The loosening mechanism 3 includes a support rod 31 arranged in the loosening compartment 2, and a loosening disk 32 is rotatably connected to the support rod 31; a driving component 33 is arranged between the loosening disk 32 and the loosening compartment 2, and the loosening disk 32 is truncated cone-shaped, and an auxiliary loosening component 34 is arranged between the loosening disk 32 and the loosening compartment 2. When the long fiber wood pulp raw material is fed into the loose chamber 2, the long fiber wood pulp raw material directly falls on the side of the loose disk 32, and under the action of the inclined surface of the loose disk 32, the long fiber wood pulp raw material is evenly scattered, and at the same time, the driving component 33 is used to drive the loose disk 32 to rotate, so that the long fiber wood pulp raw material in contact with the loose disk 32 rotates and falls into the steam furnace 1, so that the long fiber wood pulp raw material can be evenly scattered in the steam furnace 1. When the long fiber wood pulp raw material is fed into the loose chamber 2, the long fiber wood pulp raw material is guided by the side of the loose disk 32, and the loose disk 32 is rotated at the same time, so that the long fiber wood pulp raw material passing through the loose chamber 2 can be evenly scattered in the steam furnace 1, thereby improving the uniform heating rate of the long fiber wood pulp raw material.

[0034] Reference Figure 2 , Figure 3 , Figure 4 and Figure 5 The driving assembly 33 includes a driving motor 331 fixed on the loosening chamber 2, a rotating rod 332 is rotatably connected to the supporting rod 31, and the output end of the driving motor 331 passes through the loosening chamber 2 and is fixedly connected to the rotating rod 332. When the loosening disk 32 needs to rotate, the driving motor 331 is directly started, so that the driving motor 331 drives the rotating rod 332 to rotate, and the rotating rod 332 drives the loosening disk 32 to rotate. By driving the driving motor 331 to drive the loosening disk 32 to rotate, the loosening disk 32 can be easily driven to rotate, so that the loosening disk 32 drives the long-fiber wood pulp raw material.

[0035] Reference Figure 2 , Figure 3 , Figure 4 and Figure 5The auxiliary loosening component 34 includes a support ring 341 arranged at the end of the loosening disk 32 away from the support rod 31, the support ring 341 is rotatably connected to the inner wall of the loosening chamber 2, a plurality of circumferentially distributed dispersion rods 342 are fixed on the inner wall of the support ring 341, and the plurality of dispersion rods 342 are staggered. Three circumferentially distributed synchronization blocks 343 are fixed on the support ring 341, and the end of the synchronization block 343 away from the support ring 341 is fixedly connected to the loosening disk 32. When the driving motor 331 drives the loosening disk 32 to rotate, the loosening disk 32 drives the synchronous block 343, and the synchronous block drives the support ring, so that the support ring 341 rotates under the support of the loosening chamber 2. While the support ring 341 is rotating, the support ring 341 drives the dispersion rod 342 to further stir the long-fiber wood pulp raw material falling from the loosening disk 32, so that the long-fiber wood pulp raw material can fall more evenly in the steam furnace 1. By rotating the loosening disk 32 and rotating the synchronous block 343 at the same time, the synchronous block 343 drives the support ring 341 to rotate, and the loosening rod on the support ring 341 can disperse the falling long-fiber wood pulp raw material, thereby further reducing the possibility of agglomeration of the long-fiber wood pulp raw material and uneven heating in the steam furnace 1.

[0036] Reference Figure 4 and Figure 5 A plurality of evenly distributed loosening protrusions 35 are fixed on the side wall of the loosening disk 32. The evenly distributed loosening protrusions 35 are fixed on the loosening disk 32. When the long-fiber wood pulp raw material falls on the loosening disk 32, the loosening disk 32 rotates, and the loosening protrusions 35 on the loosening disk 32 further stir and loosen the long-fiber wood pulp raw material. By fixing the evenly distributed loosening protrusions 35 on the loosening disk 32, when the loosening disk 32 rotates, the loosening disk 32 drives the loosening protrusions 35 to rotate, so that the long-fiber wood pulp raw material falling on the loosening disk 32 can be further dispersed.

[0037] A high-strength moisture-proof corrugated paper, the corrugated paper is composed of three layers, the middle layer is high-density corrugated core paper, the high-sealing corrugated core paper is a long-fiber pine pulp base material, and both sides of the high-density corrugated core paper are fixed with a moisture-proof surface layer, which is composed of natural bamboo fiber and polylactic acid. The high-density corrugated core paper has good moisture-proof performance and high-strength characteristics, and the outer layer is covered with a moisture-proof surface layer composed of bamboo fiber and polylactic acid, which can further improve the moisture-proof performance of the corrugated paper, and also has good ecological friendliness.

[0038] Working principle: When corrugated paper is produced, first, the long-fiber wood pulp raw material is fed into the loosening chamber 2 from the feeding port 4 of the loosening chamber 2 by an external conveyor belt. When the long-fiber wood pulp raw material is fed into the loosening chamber 2, the long-fiber wood pulp raw material directly falls on the side of the loosening plate 32. Under the action of the inclined surface of the loosening plate 32, the long-fiber wood pulp raw material is evenly scattered. At the same time, the driving component 33 is used to drive the loosening plate 32 to rotate, so that the long-fiber wood pulp raw material in contact with the loosening plate 32 rotates and falls into the steam furnace 1, so that the long-fiber wood pulp raw material can be evenly scattered in the steam furnace 1, and then the driving motor 331 drives the loosening plate 3 2 rotates, the loose disk 32 drives the synchronous block 343, and the synchronous block drives the support ring, so that the support ring 341 rotates under the support of the loose chamber 2. While the support ring 341 rotates, the support ring 341 drives the dispersion rod 342 to further stir the long fiber wood pulp raw material falling from the loose disk 32, so that the long fiber wood pulp raw material falls more evenly in the steam furnace 1, the steam furnace 1 is sealed, and then the long fiber wood pulp raw material is steamed by the steam furnace 1, and the pressure in the steam furnace 1 is gradually increased to a high temperature and high pressure condition to destroy the hydrogen bond network between the fibers, so that the fibers are more closely combined together, and the steam furnace 1 is improved. The close bonding and durability between the fibers are improved, the cooking liquid in the steam furnace 1 is discharged from the steam furnace 1, and then the pressure in the steam furnace 1 is reduced, and then the steam furnace 1 is opened, the cooked fibers are taken out, and the impurities attached to the fibers are removed by the washing process, and then the treated fibers are diluted and mixed to form pulp, and then the pulp is transported to the papermaking machine, and the pulp is formed into wet paper sheets for drying to become dry paper, and then the dry paper is sent to the corrugator to form corrugated core paper, and then the moisture-proof surface material is prepared according to a certain ratio. Among the moisture-proof surface materials, the natural plant fiber is preferably bamboo fiber because it has good softness and skin-friendly feel. At the same time, bamboo has a short growth cycle and is in line with the principle of sustainable development. Polylactic acid (PLA) is selected as the biodegradable plastic, which is a polymer derived from natural resources such as corn starch. It can be decomposed into carbon dioxide and water under natural conditions and will not cause environmental pollution. Then use the spraying equipment to evenly spray the moisture-proof surface material on the surface of the corrugated core paper, and then send the corrugated core paper sprayed with the moisture-proof surface material into the hot pressing equipment. Use the hot pressing equipment to cure the moisture-proof surface material on the corrugated core paper. After curing, cool the corrugated core paper to room temperature, check the quality of the corrugated core paper, and put it into storage for use after the quality is qualified.

Claims

1. A high-strength moisture-proof corrugated paper manufacturing process, characterized in that: The production process includes: S1: Prepare high-quality long-fiber wood pulp raw materials and ensure they are dry; S2: placing the raw materials into a steam furnace (1) for pretreatment; S3: Take out the processed fibers and immediately send them to a forming machine for processing to form a corrugated core paper of a predetermined shape; S4: Mix the moisture-proof surface material in a certain proportion, stir evenly and spray it on both sides of the corrugated core paper; S5: sent to hot pressing equipment for final curing; S6: After cooling to room temperature, check the product quality and qualified products can be put into storage for future use.

2. A high-strength moisture-proof corrugated paper manufacturing process according to claim 1, characterized in that: The steam furnace (1) pretreatment in S2 is controlled at a temperature between 180-200° C. for a period of not less than 45 minutes, and the temperature of the hot pressing equipment in S5 is set at 150-160° C. for a period of about 30 seconds.

3. The high-strength moisture-proof corrugated paper manufacturing process according to claim 1, characterized in that: The steam furnace (1) is provided with a loosening chamber (2). The steam furnace (1) and the loosening chamber (2) are fixedly connected and communicate with each other. A loosening mechanism (3) is provided in the loosening chamber (2). A loading port (4) is provided on the loosening chamber (2).

4. A high-strength moisture-proof corrugated paper manufacturing process according to claim 3, characterized in that: The loosening mechanism (3) comprises a support rod (31) arranged in a loosening compartment (2), and a loosening disk (32) is rotatably connected to the support rod (31); a driving assembly (33) is arranged between the loosening disk (32) and the loosening compartment (2); the loosening disk (32) is in a truncated cone shape; and an auxiliary loosening assembly (34) is arranged between the loosening disk (32) and the loosening compartment (2).

5. A high-strength moisture-proof corrugated paper manufacturing process according to claim 4, characterized in that: The driving assembly (33) comprises a driving motor (331) fixed on the loose compartment (2); a rotating rod (332) is rotatably connected to the supporting rod (31); and an output end of the driving motor (331) passes through the loose compartment (2) and is fixedly connected to the rotating rod (332).

6. A high-strength moisture-proof corrugated paper manufacturing process according to claim 5, characterized in that: The auxiliary loosening assembly (34) comprises a support ring (341) arranged at one end of the loosening disk (32) away from the support rod (31); the support ring (341) is rotatably connected to the inner wall of the loosening chamber (2); a plurality of circumferentially distributed dispersion rods (342) are fixed to the inner wall of the support ring (341); the plurality of dispersion rods (342) are staggeredly distributed; three circumferentially distributed synchronization blocks (343) are fixed to the support ring (341); one end of the synchronization block (343) away from the support ring (341) is fixedly connected to the loosening disk (32).

7. The high-strength moisture-proof corrugated paper manufacturing process according to claim 4, characterized in that: A plurality of evenly distributed loose protrusions (35) are fixed on the side wall of the loose plate (32).

8. A high-strength moisture-proof corrugated paper, characterized in that: The corrugated paper is composed of three layers, the middle layer is high-density corrugated core paper, the high-sealing corrugated core paper uses long-fiber pine pulp as a base material, and moisture-proof surface layers are fixed on both sides of the high-density corrugated core paper, and the moisture-proof surface layers are composed of natural bamboo fiber and polylactic acid.

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