Production process and compounding device of degradable food packaging paper

Abstract

The application discloses a production process and a compounding device of degradable food packaging paper, and relates to the technical field of paper compounding devices.The compounding device is internally provided with a sanding assembly for scratching the surface of paper, a mixed brushing assembly for gluing the surface of paper, a glue storage assembly for providing glue for the mixed brushing assembly, a film for pasting the film on the surface of paper and a winding roll for winding the compounded packaging paper, and a side pressing assembly for pressing the side of the winding roll.The sanding assembly can make the surface of paper rough, thereby increasing the surface area, so that the glue can better penetrate into the small concave-convex structure of the paper in the subsequent gluing process, a more firm mechanical interlocking is formed, and the bonding strength between the paper and the film is significantly enhanced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of paper compounding devices, and in particular to a production process and compounding device for degradable food packaging paper. BACKGROUND

[0002] A packaging paper compounding machine is an automatic device capable of bonding two or more layers of packaging materials together with an adhesive. The packaging paper compounding machine is suitable for compounding materials such as film, paper and cloth. During the compounding process, the adhesive glue coated between the packaging paper and the film needs to be uniformly delivered to the packaging paper by a glue applying roller.

[0003] For example, a glue applying device of a packaging paper compounding machine with the publication number CN113289838A includes a bottom plate, two mounting plates fixedly connected to the upper side wall of the bottom plate, a conveying roller group arranged between the two mounting plates, a rotating shaft arranged between the two mounting plates, a glue applying roller fixedly connected to the side wall of the rotating shaft, a motor arranged at the upper end of the bottom plate, an output shaft of the motor penetrating through one of the mounting plates and fixedly connected to the rotating shaft, a glue applying mechanism arranged at the upper end of the bottom plate, the glue applying mechanism including a glue storage tank fixedly connected to the side wall of one of the mounting plates, a partition plate fixedly connected to the inner wall of the glue storage tank, a one-way opening penetratingly arranged in the side wall of the partition plate, and an electromagnetic plate fixedly connected to the inner bottom of the glue storage tank. The invention does not require manual glue applying by workers, saving people's time and energy, and the glue applying effect is more uniform than manual work, and the situation of too thin glue on the rear material is avoided, ensuring the glue applying effect of the device.

[0004] The above-mentioned invention does not pre-treat the surface of the paper with sanding to increase the surface area, resulting in the inability of the applied glue to penetrate deeper into the microstructure of the paper to form a firm mechanical interlock, which reduces the bonding strength of the paper and the film. At the same time, the smooth surface of the paper is prone to bubbles and wrinkles when compounding with the paper. Therefore, the present application provides a production process and compounding device for degradable food packaging paper to meet the needs. SUMMARY

[0005] The present application aims to provide a production process and compounding device for degradable food packaging paper, which can effectively solve the problems raised in the background art.

[0006] To achieve the above object, the application provides the following technical scheme: a composite device for degradable food packaging paper, comprising a composite mechanism, a sanding assembly for scratching the surface of the paper is arranged in the composite mechanism, a mixed brushing assembly for coating glue on the surface of the paper is arranged in the composite mechanism, a glue storage assembly for providing glue for the mixed brushing assembly is arranged in the composite mechanism, a film for pasting the film on the surface of the paper and a winding roll for winding the composite packaging paper are arranged in the composite mechanism, and an edge pressing assembly for pressing the side edge of the winding roll is arranged in the composite mechanism.

[0007] The mixed brushing assembly comprises an agitating plate, a plurality of flow guide grooves are arranged on the outer surface of the agitating plate in equal intervals, and the outer surface of the agitating plate is in a triangular pointed shape for scratching the surface of the paper.

[0008] The composite mechanism comprises a support frame, a roller, a film pasting roller, a supporting rod, a winding roller and a cylindrical rod are arranged in the support frame, the film is sleeved on the winding roller, and the winding roller is sleeved on the supporting rod.

[0009] The sanding assembly comprises a cylinder, the cylinder is fixedly installed in the support frame, an adapter frame is fixedly installed on the outer surface of the cylinder, two sliding grooves are symmetrically arranged on the bottom of the adapter frame, an adapter plate is slidably installed in the sliding grooves, a sanding plate is installed on the bottom of the adapter plate, the sanding plate contacts the surface of the paper to rub the paper to make the surface rough, a baffle is arranged on the upper end of the adapter frame, and a plurality of springs are arranged between the baffle and the adapter plate in equal intervals.

[0010] The mixed brushing assembly further comprises a shaft and a driving motor, the shaft is rotatably installed on the inner wall of the support frame, a gear is sleeved on one side of the outer surface of the shaft, a gear wheel is arranged on the output end of the driving motor, the gear wheel is engaged with the gear, the driving motor drives the shaft to rotate through the gear wheel and the gear, the driving motor is fixedly installed on the inner wall of the support frame, a rolling cylinder is arranged on the outer surface of the shaft, a plurality of mounting grooves and clamping grooves are arranged in annular array on the outer surface of the rolling cylinder.

[0011] The mounting grooves are provided with mounting blocks in the interiors thereof, the mounting blocks are fixedly installed on the bottom of the agitating plate, the clamping grooves are provided with adapter pieces in the interiors thereof, the adapter pieces are fixedly installed with glue brushing plates on one side, a plurality of air holes are arranged in the interiors of the glue brushing plates, the outer surfaces of the glue brushing plates are in a sawtooth shape, and the glue brushing plates are made of rubber.

[0012] The glue storage assembly comprises a support plate fixedly installed on the inner wall of the support frame, a liquid storage tank fixedly installed on the outer surface of the support plate, a glue passing pipe communicated with the bottom of the liquid storage tank, a mounting plate connected to one end of the glue passing pipe, and a glue applying box fixedly installed at the bottom of the mounting plate.

[0013] The edge pressing assembly comprises a support rod fixedly installed on the inner wall of the support frame, two support frames rotatably installed on the outer surface of the support rod, torsion springs arranged on one side of the two support frames and sleeved on the support rod, and edge pressing wheels rotatably installed in the two support frames.

[0014] The edge pressing wheels are in contact with the winding drum and are used to extrude the edge corners of the composite wound packaging paper.

[0015] A production process of a degradable food packaging paper composite device, the specific operation steps of which are as follows:

[0016] S1, during production, the paper is laid in the inside of the composite mechanism, and then the paper is moved by being pulled by the winding drum, and the paper first passes through the sanding assembly, the sanding assembly rubs the surface of the paper to make the surface of the paper rough and fuzzy;

[0017] S2, the paper rubbed by the above-mentioned sanding assembly passes through the mixed brushing assembly for glue application, the glue brushing plate arranged in the mixed brushing assembly is used for glue application, and the stirring plate is used for scratching the paper to make the applied glue fully contact with the rough surface of the paper, so that the glue is soaked on the rough surface of the paper.

[0018] S3, when the mixed brushing assembly rotates to apply glue to the paper, the glue storage assembly uniformly applies glue to the surface of the mixed brushing assembly with the rotation of the mixed brushing assembly, the film on the film of the paper is covered on the surface of the paper after the glue is applied to the paper, and then the composite paper is wound on the winding drum.

[0019] The edge pressing assembly is used to extrude the two sides of the surface of the winding drum, and prevents the edge of the composite paper from opening glue.

[0020] In summary, the technical effects and advantages of the present application are as follows:

[0021] 1, the sanding assembly is arranged to make the surface of the paper rough, thereby increasing the surface area, so that the glue can better penetrate into the small concave-convex structure of the paper in the subsequent glue application process, forming a more firm mechanical interlocking, and significantly enhancing the bonding strength between the paper and the film;

[0022] And the rough surface can provide more contact points, so that the film can be more closely and uniformly attached to the paper, reducing the generation of bubbles and wrinkles.

[0023] 2、The serrated shape of the outer surface of the glue brushing plate and the rubber material, as well as the hollow structure with air holes, can flexibly adapt to the unevenness of the paper surface when being extruded by the rolling cylinder, realizing uniform brushing of the glue. Since the surface of the paper is roughened in advance, combined with the extrusion effect of the glue brushing plate, the glue can penetrate deeper into the paper, forming a more secure mechanical bond and accelerating the drying process of the glue, thereby forming a tighter and more durable bond between the film and the paper during compounding, reducing the risk of delamination.

[0024] 3、The triangular pointed shape of the stirring plate can penetrate into the tiny gaps on the surface of the paper during rotation, allowing the glue to penetrate more fully into the rough fibers of the paper through physical scratching, and the deep contact and combing effect helps the glue to tightly bind with the paper fibers, thereby forming a stronger adhesive force when the paper and the film are compounded, improving the strength and durability of the overall composite material. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the composite device for degradable food packaging paper;

[0027] Figure 2 It is a schematic diagram of the local three-dimensional structure of the composite device for degradable food packaging paper;

[0028] Figure 3 It is a sectional view of the three-dimensional connection structure of the composite device for degradable food packaging paper;

[0029] Figure 4 It is a schematic diagram of the three-dimensional connection structure of the glue storage assembly;

[0030] Figure 5 It is a schematic diagram of the local three-dimensional connection structure of the glue storage assembly;

[0031] Figure 6 It is a schematic diagram of the three-dimensional connection structure of the mixing and brushing assembly;

[0032] Figure 7 It is a sectional view of the three-dimensional connection structure of the mixing and brushing assembly;

[0033] Figure 8 Fig. 1 is a schematic diagram of the three-dimensional connection structure of the stirring plate;

[0034] Figure 9 Fig. 2 is a schematic diagram of the three-dimensional connection structure of the glue brushing plate;

[0035] Figure 10 Fig. 3 is a schematic diagram of the three-dimensional connection structure of the sanding assembly;

[0036] Figure 11 Fig. 4 is an exploded view of the three-dimensional connection structure of the sanding assembly;

[0037] Figure 12 Fig. 5 is a schematic diagram of the three-dimensional connection structure of the edge pressing assembly.

[0038] In the figure: 1, composite mechanism; 11, support frame; 12, roller; 13, film pasting cylinder; 14, support rod; 15, winding cylinder; 16, cylindrical rod; 2, winding cylinder; 3, film; 4, edge pressing assembly; 41, support rod; 42, support frame; 43, torsional spring; 44, edge pressing wheel; 5, mixed brushing assembly; 51, driving motor; 52, shaft rod; 53, rolling cylinder; 54, stirring plate; 55, glue brushing plate; 56, mounting groove; 57, clamping groove; 58, mounting block; 59, connecting piece; 511, flow guide groove; 50, air hole; 6, glue storage assembly; 61, support plate; 62, liquid storage tank; 63, glue conveying pipe; 64, mounting plate; 65, glue coating box; 66, mesh; 7, sanding assembly; 71, cylinder; 72, connecting frame; 73, sliding groove; 74, sanding plate; 75, baffle; 76, connecting plate; 77, spring. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0040] Embodiment one: reference Figures 1 to 12 A composite device of degradable food packaging paper comprises a composite mechanism 1, the inside of the composite mechanism 1 is provided with a sanding assembly 7 for scratching the surface of the paper, the inside of the composite mechanism 1 is provided with a mixed brushing assembly 5 for coating glue on the surface of the paper, the inside of the composite mechanism 1 is provided with a glue storage assembly 6 for providing glue for the mixed brushing assembly 5, the inside of the composite mechanism 1 is provided with a film 3 for pasting the film on the surface of the paper and a winding cylinder 2 for winding the composite packaging paper, and the inside of the composite mechanism 1 is provided with an edge pressing assembly 4 for pressing the side edge of the winding cylinder 2.

[0041] It is worth mentioning that the paper is first laid on the laminating mechanism 1, and then the paper is pulled and moved along with the winding of the roll 2, and the paper first passes through the sanding assembly 7, which rubs the surface of the paper to make the surface of the paper rough and rough;

[0042] After the surface of the paper becomes rough, the surface area can be increased, so that in the subsequent glue coating process, the glue can better penetrate into the small concave and convex structure of the paper, form a more firm mechanical interlocking, and significantly enhance the bonding strength between the paper and the film;

[0043] Moreover, the rough surface can provide more contact points, so that the film can be more closely and uniformly attached to the paper, reducing the generation of bubbles and wrinkles.

[0044] The paper rubbed by the sanding assembly 7 described above will pass through the mixing brush assembly 5 for glue coating, and the brush plate 55 arranged inside the mixing brush assembly 5 is used for coating glue, and the stirring plate 54 is used for scratching the paper to make the coated glue fully contact with the rough surface of the paper, so that the glue is soaked on the rough surface of the paper;

[0045] The brush plate 55 in the mixing brush assembly 5 can uniformly distribute the glue, ensure that each part of the paper can obtain a consistent glue coating, avoid local excess or deficiency, ensure the flatness of the composite material and prevent peeling problems in subsequent processing;

[0046] The stirring plate 54 helps to remove excess glue through the scratching action, and also promotes the glue to penetrate into the micropores of the rough surface of the paper, accelerates the penetration process of the glue, makes the gluing more thorough, and improves the adhesion between the composite layers.

[0047] When the mixing brush assembly 5 rotates to coat the paper with glue, the glue storage assembly 6 uniformly coats the glue on the surface of the mixing brush assembly 5 with the rotation of the mixing brush assembly 5. After the paper is coated with glue, the film on the film 3 covers the surface of the paper, and then the laminated paper is wound on the roll 2. The edge compression assembly 4 is arranged to extrude the surface of the roll 2 on both sides, and the edge compression assembly 4 prevents the edge of the laminated paper from opening.

[0048] The laminating mechanism 1 comprises a support frame 11, and the inside of the support frame 11 is provided with a roller 12, a film sticking roller 13, a supporting rod 14, a winding roller 15 and a cylindrical rod 16. The film 3 is sleeved on the winding roller 15, and the roll 2 is sleeved on the supporting rod 14.

[0049] It is worth mentioning that the paper is laid on the support frame 11, and then passes through the bottom of the sanding assembly 7 and the mixed brush assembly 5, the paper passes through the outer surface of the roller 12, and then passes through the film sticking roller 13 and the cylindrical rod 16, and then is wound on the winding drum 2, the paper is coated with glue by the mixed brush assembly 5, and then the film 3 wrapped on the surface of the winding drum 15 is pulled out and stuck on the surface of the coated paper, and the compounded paper is wound on the winding drum 2, and the support rod 14 is driven to rotate by the driving motor, thereby providing power for winding the paper on the winding drum 2, and the winding path of the paper and the film is shown in the figure. Figure 2

[0050] The sanding assembly 7 comprises a cylinder 71 fixedly installed in the support frame 11, the outer surface of the cylinder 71 is fixedly installed with an adapter frame 72, the bottom of the adapter frame 72 is symmetrically provided with two sliding grooves 73, the adapter plate 76 is slidably installed in the two sliding grooves 73, the bottom of the adapter plate 76 is installed with a sanding plate 74, and the sanding plate 74 contacts the surface of the paper for rubbing the paper to make the surface rough, the upper end of the adapter frame 72 is provided with a baffle 75, and a plurality of springs 77 are arranged between the baffle 75 and the adapter plate 76.

[0051] It is worth mentioning that the paper laid on the support frame 11 first contacts the sanding plate 74, and the bottom of the sanding plate 74 is provided with a sanding groove, or sandpaper is pasted on the bottom of the sanding plate 74 to provide friction, and when the paper contacts the sanding plate 74, a large friction force is generated between the sanding plate 74 and the paper, and the paper is moved to scratch the surface of the paper, so that the surface of the paper becomes rough, and the sanding plate 74 is driven by the friction force to slide the adapter plate 76 in the sliding groove 73, and the adapter plate 76 is pressed to contract the spring 77 when the adapter plate 76 slides, and the contraction of the spring 77 enables the sanding plate 74 to automatically adjust the self-adaptive ability according to the friction force brought by the paper, so as to prevent the paper from being broken due to excessive tension between the sanding plate 74 and the paper.

[0052] The spring 77 can automatically adjust the pressure according to the movement and resistance of the paper, which can not only ensure sufficient friction to effectively sand the surface of the paper, but also avoid damage to the paper due to excessive pressure, improve the stability of the production process and the application range of the paper processing, and the sanding groove or the pasted sandpaper at the bottom of the sanding plate 74 can ensure consistent friction on the entire width of the paper, so that the sanding treatment effect of the surface of the paper is uniform.

[0053] ​The mixed brushing assembly 5 further comprises a shaft 52 and a driving motor 51. The shaft 52 is rotatably installed on the inner wall of the support frame 11, and a gear is sleeved on one side of the outer surface of the shaft 52. The driving motor 51 is fixedly installed on the inner wall of the support frame 11. The outer surface of the shaft 52 is provided with a rolling cylinder 53. The outer surface of the rolling cylinder 53 is provided with a plurality of annularly arranged mounting grooves 56 and clamping grooves 57.

[0054] The mounting grooves 56 are internally provided with mounting blocks 58, which are fixedly installed on the bottom of the stirring plate 54. The clamping grooves 57 are internally provided with a connecting piece 59, one side of which is fixedly installed with a glue brushing plate 55. The inner part of the glue brushing plate 55 is provided with a plurality of air holes 50. The outer surface of the glue brushing plate 55 is in a sawtooth shape, and the glue brushing plate 55 is made of rubber.

[0055] It is worth noting that the paper after being rubbed by the sanding plate 74 will be sent to the bottom of the rolling cylinder 53. The paper contacts the stirring plate 54 and the glue brushing plate 55. Because the output end of the driving motor 51 is provided with a gear, and the gear is engaged with the gear, the driving motor 51 drives the shaft 52 to rotate through the gear and the gear. The rotating direction of the shaft 52 is opposite to the moving direction of the paper. The shaft 52 drives the rolling cylinder 53 to rotate. The rolling cylinder 53 drives the stirring plate 54 and the glue brushing plate 55 to rotate. When the glue brushing plate 55 contacts the paper, the outer surface of the sawtooth shape is extruded. The glue inside the sawtooth shape is extruded and applied on the paper. Because the surface of the paper is rough, the paper can absorb part of the glue to prevent uniform sticking when the film is compounded. The glue that invades the inside of the paper can make the glue dry quickly after the film is compounded;

[0056] And because the glue brushing plate 55 is made of rubber, and the air holes 50 are provided, the inside of the glue brushing plate 55 is hollow. When the glue brushing plate 55 is extruded, it can deform, so that the glue is evenly applied on the paper;

[0057] The sawtooth shape design of the outer surface of the glue brushing plate 55 and the rubber material, as well as the hollow structure matched with the air holes 50, can flexibly adapt to the unevenness of the surface of the paper when extruded by the rolling cylinder 53, realizing the uniform application of the glue. Because the surface of the paper is rough after sanding, combined with the extrusion of the glue brushing plate 55, the glue can penetrate deeper into the paper, forming a more firm mechanical combination and accelerating the drying process of the glue, so as to form a more close and durable bonding between the film and the paper during compounding, reducing the risk of delamination.

[0058] The mixed brushing assembly 5 comprises a stirring plate 54. The outer surface of the stirring plate 54 is provided with a plurality of equidistantly distributed flow guide grooves 511. The outer surface of the stirring plate 54 is in a triangular pointed shape for scratching the surface of the paper.

[0059] With the rotation of the rolling cylinder 53, the stirring plate 54 is rotated and contacted with the paper. When the stirring plate 54 is rotated and contacted with the paper, the surface of the stirring plate 54 is triangular and used for scratching the surface of the paper. Therefore, the rough surface of the paper can be further scratched with the rotation of the stirring plate 54, so that the glue and the rough fiber of the paper are re-combed, the rough surface of the paper is fully mixed with the glue, and the flow guide groove 511 can expel the excess glue into the flow guide groove 511.

[0060] The triangular design of the stirring plate 54 can penetrate into the small gap of the surface of the paper during rotation, so that the glue can be more fully penetrated into the rough fiber of the paper through physical scratching. The deep contact and combing effect can help the glue to be closely combined with the fiber of the paper, so that a stronger bonding force is formed when the paper is combined with the film, and the strength and durability of the overall composite material are improved.

[0061] The glue storage assembly 6 comprises a support plate 61 fixedly installed on the inner wall of the support frame 11, and a liquid storage tank 62 fixedly installed on the outer surface of the support plate 61. The bottom of the liquid storage tank 62 is communicated with a glue conveying pipe 63, one end of the glue conveying pipe 63 is connected with a mounting plate 64, the bottom of the mounting plate 64 is fixedly installed with a glue applying box 65, the inside of the glue applying box 65 is provided with a mesh screen 66, and the glue applying box 65 is attached to the surface of the rolling cylinder 53 and contacted with the stirring plate 54 and the glue applying plate 55.

[0062] It is worth noting that when the mixing and brushing assembly 5 rotates to apply glue to the paper, the glue applying box 65 provides glue for the mixing and brushing assembly 5 through the mesh screen 66. The mesh screen 66 is a fiber mesh that can prevent the glue from directly dripping on the mixing and brushing assembly 5 without obstruction. Only when the sawtooth-shaped rubber of the glue applying plate 55 rotates to the bottom of the glue applying box 65 and scratches the mesh screen 66, the surface of the glue applying plate 55 can be fully coated with glue. The glue applying plate 55 can absorb more glue than the stirring plate 54, and the glue in the glue applying box 65 is provided through the glue conveying pipe 63 and the liquid storage tank 62.

[0063] In example two, the edge pressing assembly 4 comprises a support rod 41 fixedly installed on the inner wall of the support frame 11, and two support frames 42 rotatably installed on the outer surface of the support rod 41. The two support frames 42 are provided with torsion springs 43 on one side, and the torsion springs 43 are sleeved on the support rod 41. The two support frames 42 are rotatably installed with edge pressing wheels 44 in the interiors thereof, the edge pressing wheels 44 are contacted with the winding drum 2, and the edge pressing wheels 44 are used for pressing the edges of the composite and the packaging paper after winding.

[0064] It is worth mentioning that the paper after compounding is wound on the reel 2, and the edge roller 44 is pressed on both sides of the outer surface of the reel 2. The torsion spring 43 provides a torsion force through the support frame 42 to press the edge roller 44 on the paper wound on the reel 2. The edge roller 44 is pressed on the edge of the paper, which can prevent the paper from opening after compounding.

[0065] A production process of a degradable food packaging paper compounding device, the specific operation steps are as follows:

[0066] S1, during production, the paper is laid in the inside of the compounding mechanism 1, and then the paper is moved by the reel 2 during winding. The paper first passes through the sanding assembly 7, which rubs the surface of the paper to make the surface rough.

[0067] S2, the paper after rubbing the above-mentioned sanding assembly 7 will pass through the mixing brush assembly 5 to smear glue. The brush plate 55 arranged in the mixing brush assembly 5 is used to smear glue, and the stirring plate 54 is used to scratch the paper to make the smeared glue fully contact with the rough surface of the paper, so that the glue is soaked on the rough surface of the paper.

[0068] S3, when the mixing brush assembly 5 rotates to smear glue on the paper, the glue storage assembly 6 rotates with the mixing brush assembly 5 to evenly smear glue on the surface of the mixing brush assembly 5. The film on the film 3 covers the surface of the paper after the paper is smeared with glue, and then the compounded paper is wound on the reel 2. The edge assembly 4 is arranged to press on both sides of the surface of the reel 2. The edge assembly 4 prevents the edge of the compounded paper from opening.

[0069] Finally, it should be pointed out that the above-mentioned only for the preferred embodiments of the present application, and does not limit the present application, although the above-mentioned embodiments of the present application are described in detail, for the person skilled in the art, it still can modify the technical scheme recorded in the above-mentioned embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A composite device for biodegradable food packaging paper, comprising a composite mechanism (1), characterized in that: The composite mechanism (1) is equipped with a frosting component (7) for scraping the paper surface, a mixing brush component (5) for applying glue to the paper surface, a glue storage component (6) for providing glue to the mixing brush component (5), a film (3) for pasting the film onto the paper surface and a packaging paper roll (2) for winding and laminating, and an edge pressing component (4) for pressing the side of the roll (2). The mixing brush assembly (5) includes a stirring plate (54), and the outer surface of the stirring plate (54) is provided with a plurality of guide grooves (511) distributed at equal intervals. The outer surface of the stirring plate (54) is triangular-pointed for scraping the paper surface. The composite mechanism (1) includes a support frame (11), and the frosting assembly (7) includes a cylinder (71). The cylinder (71) is fixedly installed inside the support frame (11). A connecting frame (72) is fixedly installed on the outer surface of the cylinder (71). Two sliding grooves (73) are symmetrically opened at the bottom of the connecting frame (72). A connecting plate (76) is slidably installed inside the two sliding grooves (73). A frosting plate (74) is installed at the bottom of the connecting plate (76), and the frosting plate (74) contacts the paper surface to rub the paper to make the surface rough. A baffle (75) is provided at the upper end of the connecting frame (72). Several springs (77) are provided between the baffle (75) and the connecting plate (76) at equal intervals. The mixing brush assembly (5) also includes a shaft (52) and a drive motor (51). The shaft (52) is rotatably mounted on the inner wall of the support frame (11). A gear is sleeved on one side of the outer surface of the shaft (52). A meshing gear is provided at the output end of the drive motor (51), and the meshing gear meshes with the gear. The drive motor (51) drives the shaft (52) to rotate through the meshing gear and the gear. The drive motor (51) is fixedly mounted on the inner wall of the support frame (11). A rolling cylinder (53) is provided on the outer surface of the shaft (52). Several mounting grooves (56) and slots (57) are provided on the outer surface of the rolling cylinder (53) in a ring array. The mounting slot (56) is provided with a mounting block (58) inside. The mounting block (58) is fixedly installed at the bottom of the stirring plate (54). The slot (57) is provided with a connector (59) inside. A glue brush plate (55) is fixedly installed on one side of the connector (59). The glue brush plate (55) has several air holes (50) inside. The outer surface of the glue brush plate (55) is serrated and is made of rubber.

2. The composite device for biodegradable food packaging paper according to claim 1, characterized in that: The support frame (11) is equipped with a roller (12), a film-applying roller (13), a support rod (14), a take-up roller (15), and a cylindrical rod (16). The film (3) is sleeved on the take-up roller (15), and the roller (2) is sleeved on the support rod (14).

3. The composite device for biodegradable food packaging paper according to claim 1, characterized in that: The glue storage assembly (6) includes a support plate (61), which is fixedly installed on the inner wall of the support frame (11). A liquid storage tank (62) is fixedly installed on the outer surface of the support plate (61). A glue-passing pipe (63) is connected to the bottom of the liquid storage tank (62). One end of the glue-passing pipe (63) is connected to an installation plate (64). A glue-applying box (65) is fixedly installed at the bottom of the installation plate (64). A mesh screen (66) is provided inside the glue-applying box (65). The glue-applying box (65) is attached to the surface of the rolling cylinder (53) and is in contact with the stirring plate (54) and the glue-applying plate (55).

4. The composite device for biodegradable food packaging paper according to claim 1, characterized in that: The pressing assembly (4) includes a support rod (41), which is fixedly installed on the inner wall of the support frame (11). Two supports (42) are rotatably installed on the outer surface of the support rod (41). A torsion spring (43) is provided on one side of each of the two supports (42), and the torsion spring (43) is sleeved on the support rod (41). Pressing wheels (44) are rotatably installed inside each of the two supports (42).

5. The composite device for biodegradable food packaging paper according to claim 4, characterized in that: The pressure roller (44) is in contact with the roll (2) and is used to squeeze the edges and corners of the packaging paper after the composite winding.

6. A production process using the biodegradable food packaging paper composite device according to any one of claims 1-5, characterized in that, The specific operating steps of this production process are as follows: S1. During production, the paper is laid inside the composite mechanism (1). Then, as the roll (2) is wound and pulled, the paper moves. The paper first passes through the abrasive component (7). The abrasive component (7) rubs the surface of the paper, making the paper surface fuzzy and rough. S2. After being rubbed by the above-mentioned abrasive component (7), the paper will be coated with glue by the mixing brush component (5). The glue brush (55) inside the mixing brush component (5) is used to apply glue, while the stirring plate (54) is used to scrape the paper so that the glue applied is fully in contact with the rough surface of the paper, so that the glue is soaked into the rough surface of the paper. S3. When the above-mentioned mixing brush assembly (5) rotates to apply glue to the paper, the glue storage assembly (6) will evenly apply the glue to the surface of the mixing brush assembly (5) as the mixing brush assembly (5) rotates. After the paper is coated with glue, the film on the film (3) will cover the surface of the paper, and then the composite paper will be rolled up onto the roll (2).

7. The production process using the biodegradable food packaging paper composite device according to claim 6, characterized in that: The edge pressing component (4) is used to press the two sides of the surface of the roll (2) to prevent the edges of the paper from coming apart after lamination.

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