High-bulk aluminum foil lining paper and production process thereof

Abstract

The invention discloses high-bulk aluminum foil lining paper and a production process thereof, and belongs to the technical field of papermaking, and the high-bulk aluminum foil lining paper comprises: a base paper layer comprising softwood pulp and hardwood pulp; a bonding layer is arranged between the aluminum foil layer and the base paper layer; the antibacterial layer comprises antibacterial microcapsules, and the antibacterial layer is sprayed on the base paper layer; wherein the bonding layer comprises polyurethane, epoxy resin, bentonite, a curing agent and the like, and the antibacterial microcapsule comprises garlic powder. The production method can be used for producing the aluminum foil lining paper which is firm, durable and antibacterial.

Description

Technical Field

[0001] This application belongs to the technical field of papermaking, and particularly relates to a high bulk aluminum foil backing paper and its production process. Background Art

[0002] Aluminum foil paper is a paper formed by laminating aluminum foil with a base paper, and is widely used in packaging of airline food, ordinary meat, cigarettes, etc. Aluminum foil paper for food and cigarettes has high barrier properties to light, gas, and water, and has moisture-proof and humidity-proof functions, so that food can be preserved fresh, and cigarettes are not easily affected by moisture, resulting in a decline in quality and loss of aroma.

[0003] There are still deficiencies in the existing aluminum foil backing paper, such as insufficient antibacterial performance: traditional aluminum foil backing paper lacks effective antibacterial components, is prone to becoming a medium for the spread of bacteria and viruses, and cannot provide effective hygiene protection, so improvements are needed. Summary of the Invention

[0004] The purpose of this application is to address the above-mentioned existing technical problems, and provide a high bulk aluminum foil backing paper and its production process, which can produce a strong, durable, and antibacterial aluminum foil backing paper.

[0005] This application provides a high bulk aluminum foil backing paper, including: A base paper layer, the composition cost of which includes softwood pulp and hardwood pulp; An aluminum foil layer, with an adhesive layer provided between the aluminum foil layer and the base paper layer; An antibacterial layer, including antibacterial microcapsules, and the antibacterial layer is sprayed on the base paper layer; Among them, the adhesive layer includes polyurethane, epoxy resin, bentonite, curing agent, etc., and the antibacterial microcapsules include garlic powder.

[0006] The base paper layer made of softwood pulp and hardwood pulp has the property of high bulk. Spraying the antibacterial layer on both sides of the base paper layer can improve the antibacterial performance of the base paper layer. Then, the base paper layer and the antibacterial layer are bonded and laminated through the adhesive layer. The antibacterial layer is formed by spraying antibacterial microcapsules, and the antibacterial performance is provided by the garlic powder in the antibacterial microcapsules. The garlic powder is obtained by crushing dry garlic slices to 30 - 100 mesh.

[0007] This application also provides a production process for high bulk aluminum foil backing paper, and the specific steps include: S1, fully mixing softwood pulp and hardwood pulp to prepare a mixed slurry; S2, dispersing antibacterial microcapsules into the mixed slurry in step S1, and performing pulp flushing to obtain a diluted slurry; S3, after screening the diluted slurry, forming it on a wire for papermaking, then pressing to dewater and drying to obtain a paper sheet; S4. Disperse the antibacterial microcapsules in food-grade natural coconut oil to prepare a spraying solution. S5. Spray the sizing solution obtained in step S4 onto both sides of the paper sheet obtained in step S3, and obtain the liner paper through drying. S6. Through a composite device, calender the liner paper, and then bond and composite it with the aluminum foil to obtain the aluminum foil liner paper.

[0008] By dispersing the antibacterial microcapsules in food-grade natural coconut oil and then spraying them on the paper sheet, the food-grade property of the liner paper can be ensured, which is hygienic and healthy for cigarette use. The liner paper is composite with the aluminum foil to form the aluminum foil liner paper. Before composite, calendering is carried out to make the side of the liner paper that does not bond with the aluminum foil have extremely high smoothness.

[0009] Further, the preparation method of the antibacterial microcapsules includes: T1. Dissolve ethyl cellulose in acetone - isopropanol to obtain a wall material solution. T2. In a fluidized bed, suspend the garlic powder in an air stream, and then through bottom spraying, co-spray the silicon dioxide and the wall material solution to form spherical antibacterial microcapsules.

[0010] By using the fluidized bed to wrap the garlic powder with silicon dioxide and the wall material solution, the allicin in the garlic powder can be slowly released, increasing the release time of allicin and the antibacterial effective period. The hydrophobicity of the antibacterial microcapsules is improved by silicon dioxide, further reducing the conditions for bacterial growth, and the moisture-proof performance of the liner paper can be provided, making the aluminum foil liner paper more antibacterial and durable.

[0011] Further, the composite device includes: Unwinding rollers, with two groups, and the unwinding rollers are respectively used for unwinding the liner paper and the aluminum foil. Composite pressure rollers, with two, and the composite pressure rollers are used for composite the liner paper and the aluminum foil. Calendering pressure rollers, with two, and the calendering pressure rollers cooperate with the liner paper correspondingly. Gluing roller, used for coating the material of the bonding layer onto the liner paper.

[0012] On the composite device, the liner paper and the aluminum foil are respectively placed on the unwinding rollers. The liner paper and the aluminum foil are unwound through the unwinding rollers. One side of the liner paper is first calendered by the calendering pressure rollers, and then the material of the bonding layer is coated on the un-calendered side of the liner paper through the gluing roller. Finally, the liner paper and the aluminum foil are bonded and composite by the composite pressure rollers to obtain the aluminum foil liner paper.

[0013] Further, the calendering pressure roller includes: Roller barrel; Outer soft pressing layer, made of soft material, and the outer soft pressing layer is placed outside the roller barrel. One of the rollers is fixedly connected to its corresponding outer soft pressing layer, and the other roller is movably connected to its corresponding outer soft pressing layer.

[0014] The roller that needs to rotate is driven by a power source such as a motor. There are two calendering rollers. The inner liner paper is passed through between the two calendering rollers to achieve calendering of the inner liner paper. The outer soft pressing layer can improve the stability when the inner liner paper moves. By fixedly connecting one outer soft pressing layer to the corresponding roller and movably connecting the other outer soft pressing layer to the corresponding roller, it can prevent wrinkles or breaks from occurring on the inner liner paper due to the speed difference between the rotations of the two rollers, improving the stability of the calendering of the inner liner paper. The roller corresponding to the movably connected outer soft pressing layer does not need to be driven by a motor.

[0015] Furthermore, the calendering roller further comprises: A heating device, installed on the roller that is movably connected to the outer soft pressing layer; A punching device, installed on the roller that is fixedly connected to the outer soft pressing layer. The punching device includes punching needles; Wherein, the outer soft pressing layer is provided with movable slots corresponding to the punching needles.

[0016] The heating device is installed on the roller that is movably connected to the outer soft pressing layer. By the action of the heating device on the calendering surface, the flatness of the matte surface is improved. A heat-conducting medium is filled between the roller installed with the heating device and the corresponding outer soft pressing layer to quickly and evenly conduct the heat to the outer soft pressing layer, ensuring the calendering effect. Grooves are formed on the other side of the inner liner paper through the punching device to facilitate improving the bonding stability between the inner liner paper and the aluminum foil. The grooves on the inner liner paper are formed by the punching needles. The movable slots correspond to the punching needles of the punching device, facilitating the punching needles to extend from the punching device into the outer soft pressing layer. The end of the punching needle does not exceed the outer wall surface of the outer soft pressing layer. When the inner liner paper is calendered, the outer soft pressing layer squeezes and deforms the inner liner paper, enabling the punching needles to act on the inner liner paper to form partial grooves without penetrating the inner liner paper.

[0017] Furthermore, the punching device comprises: A mounting shell, installed on the roller; An adjusting column, threadedly connected to the mounting shell; A needle sleeve, hinged in the mounting shell; A first spring, placed on both sides of the needle sleeve and connected between the needle sleeve and the mounting shell; A counterweight block, connected to the needle sleeve; Wherein, the punching needle is movably connected in the needle sleeve.

[0018] The mounting shell is installed on the roller. The roller has a mounting groove that exceeds the length of the mounting shell. The position of the mounting shell in the mounting groove is adjusted by an adjusting column. The needle sleeve is hinged to the mounting shell, and the punching needle is installed on the needle sleeve. A first spring acts on the needle sleeve to make the needle sleeve have a force tending to the normal direction of the corresponding position of the roller during rotation. A counterweight is used to make the end of the punching needle in the upper half area of the roller face upward. With the above structure, during the rotation of the roller, the inner liner paper moves, and the punching needle can form a groove on the inner liner paper with an arc-shaped bottom and inwardly inverted sides on both sides. When the adhesive layer material is coated on the inner liner paper, it reduces the fluidity of the adhesive material and improves the fastening property after bonding. The mounting shell has a flange to limit the movement of the mounting shell in the axial direction of the roller.

[0019] Furthermore, the needle sleeve includes: A second spring placed between the punching needle and the needle sleeve; A moving plate in a comb shape, with connecting parts provided on both sides of the moving plate; Wherein, the punching needle is provided with an abutting part corresponding to the moving plate, the roller is provided with a connecting seat corresponding to the connecting part, the connecting part extends outside the end of the roller, the roller is provided with a fitting groove corresponding to and adapted to the moving plate, and the connecting seat is placed on both sides of the fitting groove.

[0020] The second spring acts between the punching needle and the needle sleeve to make the punching needle extend out of the roller. When the moving plate acts on the abutting part, the punching needle can be contracted inward, facilitating the disassembly and assembly of the outer soft pressing layer. When the connecting part on the moving plate is connected to the connecting seat on the roller close to the axial direction by fasteners such as bolts and nuts, the moving plate abuts against the abutting part to realize the contraction of the punching needle. When the connecting part on the moving plate is connected to the connecting seat on the roller far from the axial direction by fasteners such as bolts and nuts, the abutting part is separated from the moving plate, and the punching needle can move through the hinged structure of the needle sleeve. When controlling the contraction of the punching needle, the punching needle is moved to the uppermost end of the roller to make the punching needle basically coincide with the normal of the corresponding position of the roller, facilitating the stability of the punching needle during movement.

[0021] The beneficial effects of this application are: 1. The base paper layer and the antibacterial layer are bonded and compounded through the adhesive layer. The antibacterial layer is formed by spraying antibacterial microcapsules, and the antibacterial performance is provided by the garlic powder in the antibacterial microcapsules. 2. Encapsulated by silica and the wall material solution, the allicin in the garlic powder can be slowly released, increasing the release time of allicin and the antibacterial effective period.

[0022] 3. The hydrophobicity of the antibacterial microcapsules is improved by silica, further reducing the conditions for bacterial growth and providing moisture-proof performance for the inner liner paper, making the aluminum foil inner liner paper more antibacterial and durable.

[0023] 4. Act on the calendering surface through a heating device to improve the flatness of the matte surface, and form grooves on the other side of the lining paper through a punching device to facilitate improving the bonding stability between the lining paper and the aluminum foil. Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of the composite device of the present application; Figure 2 It is a schematic structure of the calendering roller of the present application Figure 1 ; Figure 3 It is a schematic structure of the calendering roller of the present application Figure 2 ; Figure 4 It is a schematic structural diagram of the punching device of the present application; Figure 5 It is of the present application Figure 4 An enlarged view of part A; Figure 6 It is a schematic structural diagram of the aluminum foil lining paper of the present application; In the figure, reference numerals: 001, base paper layer; 002, aluminum foil layer; 003, antibacterial layer; 004, bonding layer; 100, unwind roller; 200, composite roller; 300, calendering roller; 310, roller; 311, connecting seat; 312, mating groove; 320, outer soft pressing layer; 321, movable groove; 330, heating device; 400, glue coating roller; 500, punching device; 510, punching needle; 520, mounting shell; 530, adjusting column; 540, needle sleeve; 550, first spring; 560, counterweight block; 570, second spring; 580, abutting portion; 600, moving plate; 610, connecting portion. Detailed Embodiments

[0025] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are 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 of ordinary skill in the art belong to the scope of protection of the present application.

[0026] The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of this application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same category, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / ", generally represents an "or" relationship between the associated objects before and after.

[0027] The following will combine the accompanying drawings and provide a detailed description of the embodiments of this application through specific embodiments and their application scenarios.

[0028] Embodiment 1: As Figure 6 shown, the embodiments of this application provide a high bulk aluminum foil backing paper, including: Base paper layer 001, the composition cost includes softwood pulp and hardwood pulp; Aluminum foil layer 002, a bonding layer 004 is provided between the aluminum foil layer 002 and the base paper layer 001; Antibacterial layer 003, including antibacterial microcapsules, the antibacterial layer 003 is sprayed on the base paper layer 001; Among them, the bonding layer 004 includes polyurethane, epoxy resin, bentonite, curing agent, etc., and the antibacterial microcapsules include garlic powder.

[0029] The base paper layer 001 made of softwood pulp and hardwood pulp has the property of high bulk. Spraying the antibacterial layer 003 on both sides of the base paper layer 001 can improve the antibacterial property of the base paper layer 001. Then, the base paper layer 001 and the antibacterial layer 003 are bonded and compounded through the bonding layer 004. The antibacterial layer 003 is formed by spraying antibacterial microcapsules, and the antibacterial property is provided by the garlic powder in the antibacterial microcapsules. The garlic powder is obtained by crushing dried garlic slices to 30 - 100 meshes.

[0030] Embodiment 2: This application also provides a production process for high bulk aluminum foil backing paper, and the specific steps include: S1, fully mix softwood pulp and hardwood pulp to prepare a mixed slurry; S2, disperse antibacterial microcapsules into the mixed slurry in step S1, and perform pulp flushing to obtain a diluted slurry; S3, after screening the diluted slurry, form it into a sheet on a wire, then press and dehydrate and dry to obtain a paper sheet; S4, disperse antibacterial microcapsules in food-grade natural coconut oil to prepare a spraying liquid; S5. Spray the sizing liquid obtained in step S4 onto both sides of the paper sheet obtained in step S3, and obtain the liner paper through drying; S6. Through a composite device, calender the liner paper, and then bond and composite it with the aluminum foil to obtain the aluminum foil liner paper.

[0031] By dispersing the antibacterial microcapsules in food-grade natural coconut oil and then spraying them on the paper sheet, the food-grade property of the liner paper can be ensured. It is hygienic and healthy for use in cigarettes. The liner paper is composite with the aluminum foil to form the aluminum foil liner paper. Before composite, calendering is carried out to make the side of the liner paper that does not bond with the aluminum foil have extremely high smoothness.

[0032] Further, the preparation method of the antibacterial microcapsules includes: T1. Dissolve ethyl cellulose in acetone - isopropanol to obtain the wall material solution; T2. In a fluidized bed, suspend the garlic powder in an air stream, and then through bottom spraying, co-spray the silicon dioxide and the wall material solution to form spherical antibacterial microcapsules.

[0033] The garlic powder is wrapped with silicon dioxide and the wall material solution through the fluidized bed, so that allicin in the garlic powder can be slowly released, increasing the release time of allicin and the antibacterial effective period. The hydrophobicity of the antibacterial microcapsules is improved through silicon dioxide, further reducing the conditions for bacterial growth, and can provide the moisture-proof property of the liner paper, making the aluminum foil liner paper more antibacterial and durable.

[0034] Example 3: As Figure 1 shown, the embodiment of the present application provides a production process of a high bulk aluminum foil liner paper. In addition to including the above technical features, further, the composite device includes: Unwinding rollers 100, two groups are provided, and the unwinding rollers 100 are respectively used for unwinding the liner paper and the aluminum foil; Composite pressure rollers 200, two are provided, and the composite pressure rollers 200 are used for composite the liner paper and the aluminum foil; Calendering pressure rollers 300, two are provided, and the calendering pressure rollers 300 are correspondingly matched with the liner paper; Gluing roller 400, used for coating the material of the bonding layer 004 onto the liner paper.

[0035] On the composite device, the liner paper and the aluminum foil are respectively placed on the unwinding rollers 100. The liner paper and the aluminum foil are unwound through the unwinding rollers 100. One side of the liner paper is first calendered by the calendering pressure rollers 300, and then the material of the bonding layer 004 is coated on the uncalendered side of the liner paper through the gluing roller. Finally, the liner paper and the aluminum foil are bonded and composite by the composite pressure rollers 200 to obtain the aluminum foil liner paper.

[0036] Example 4: As Figure 2As shown in the figure, the embodiment of the present application provides a production process for high bulk aluminum foil backing paper. In addition to the above technical features, further, the calendering roller 300 includes: a roller 310; an outer soft pressing layer 320, made of a soft material, and the outer soft pressing layer 320 is disposed outside the roller 310; Among them, one of the rollers 310 is fixedly connected to its corresponding outer soft pressing layer 320, and the other roller 310 is movably connected to its corresponding outer soft pressing layer 320.

[0037] The roller 310 that needs to rotate is driven by a power source such as a motor. There are two calendering rollers 300. The inner liner paper is passed through between the two calendering rollers 300 to achieve calendering of the inner liner paper. The outer soft pressing layer 320 can improve the stability when the inner liner paper moves. By fixedly connecting one outer soft pressing layer 320 to the corresponding roller 310 and movably connecting the other outer soft pressing layer 320 to the corresponding roller 310, it can prevent wrinkles or breaks from occurring in the inner liner paper due to the speed difference between the rotations of the two rollers 310, and improve the stability of the calendering of the inner liner paper. The roller 310 corresponding to the movably connected outer soft pressing layer 320 does not need to be driven by a motor.

[0038] Further, the calendering roller 300 further includes: a heating device 330, installed on the roller 310 where the outer soft pressing layer 320 is movably connected to the roller 310; a punching device 500, installed on the roller 310 where the outer soft pressing layer 320 is fixedly connected to the roller 310, and the punching device 500 includes a punching needle 510; Among them, the outer soft pressing layer 320 is provided with a movable groove 321 corresponding to the punching needle 510.

[0039] The heating device 330 is installed on the roller 310 that is movably connected to the outer soft pressing layer 320 and the roller 310. The heating device 330 acts on the calendering surface to improve the flatness of the matte surface. A heat-conducting medium is filled between the roller 310 on which the heating device 330 is installed and the corresponding outer soft pressing layer 320, so that the heat is quickly and evenly transferred to the outer soft pressing layer 320 to ensure the calendering effect. A groove is formed on the other side of the inner lining paper through the punching device 500 to improve the gap between the inner lining paper and the aluminum foil. In order to ensure the bonding stability, the groove on the inner lining paper is formed by the punching needle 510, and the movable groove 321 corresponds to the punching needle 510 of the punching device 500, so that the punching needle 510 can extend from the punching device 500 to the outer soft pressing layer 320, and the end of the punching needle 510 does not exceed the outer wall surface of the outer soft pressing layer 320. When the inner lining paper is calendered, the outer soft pressing layer 320 squeezes and deforms the inner lining paper, so that the punching needle 510 can act on the inner lining paper to form a partial groove without penetrating the inner lining paper.

[0040] Embodiment 5: like Figures 3 - 5 As shown, the embodiment of the present application provides a production process of high bulk aluminum foil liner paper. In addition to the above technical features, the punching device 500 further includes: A mounting shell 520 mounted on the roller 310; The adjusting column 530 is threadedly connected to the mounting shell 520; The needle sleeve 540 is hinged in the mounting shell 520; The first spring 550 is disposed on both sides of the needle sleeve 540 and connected between the needle sleeve 540 and the mounting shell 520; A counterweight 560 connected to the needle sleeve 540; The punching needle 510 is movably connected to the needle sleeve 540 .

[0041] The mounting shell 520 is mounted on the roller 310. The roller 310 has a mounting groove that exceeds the length of the mounting shell 520. The position of the mounting shell 520 in the mounting groove is adjusted by the adjusting column 530. The needle sleeve 540 is hinged on the mounting shell 520. The punching needle 510 is mounted on the needle sleeve 540. The first spring 550 acts on the needle sleeve 540, so that the needle sleeve 540 has a force tending to the normal direction of the corresponding position of the roller 310 during the rotation process. The counterweight block 560 The end of the punching needle 510 located in the upper half of the roller 310 is facing upward. Through the above structure, the lining paper moves during the rotation of the roller 310, and a groove with an arc-shaped bottom and inverted two sides can be formed on the lining paper through the punching needle 510. When the adhesive layer 004 material is coated on the lining paper, the fluidity of the adhesive material is reduced, and the tightness after bonding is improved. The mounting shell 520 has a flange to limit the movement of the mounting shell 520 toward the axial direction of the roller 310.

[0042] Furthermore, the needle sleeve 540 includes: A second spring 570 disposed between the punching needle 510 and the needle sleeve 540; A moving plate 600, in a comb-tooth shape, with connecting portions 610 provided on both sides of the moving plate 600; Wherein, the punching needle 510 is provided with an abutting portion 580 corresponding to the moving plate 600, the roller 310 is provided with a connecting seat 311 corresponding to the connecting portion 610, the connecting portion 610 extends outside the end of the roller 310, the roller 310 is provided with a mating groove 312 corresponding and adapted to the moving plate 600, and the connecting seat 311 is disposed on both sides of the mating groove 312.

[0043] Through the action of the second spring 570 between the punching needle 510 and the needle sleeve 540, the punching needle 510 extends outwards from the roller 310. When the moving plate 600 acts on the abutting portion 580, the punching needle 510 can be contracted inwards, facilitating the disassembly and assembly of the outer soft pressing layer 320. When the connecting portion 610 on the moving plate 600 and the connecting seat 311 on the roller 310 in the direction close to the axis are connected by fasteners such as bolts and nuts, the moving plate 600 abuts against the abutting portion 580, realizing the contraction of the punching needle 510. When the connecting portion 610 on the moving plate 600 and the connecting seat 311 on the roller 310 in the direction away from the axis are connected by fasteners such as bolts and nuts, the abutting portion 580 is separated from the moving plate 600, and the punching needle 510 can move through the hinge structure of the needle sleeve 540. When controlling the contraction of the punching needle 510, the punching needle 510 is moved to the uppermost end of the roller 310, making the normal line of the corresponding position of the punching needle 510 and the roller 310 basically coincide, facilitating the stability of the movement of the punching needle 510.

[0044] It should be noted that in this article, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, the features described with reference to certain examples may be combined in other examples.

[0045] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them fall within the protection scope of the present application.

Claims

1. A high bulk aluminum foil backing paper, characterized in that, Comprising: Base paper layer (001), the composition cost includes softwood pulp and hardwood pulp; Aluminum foil layer (002), with an adhesive layer (004) provided between it and the base paper layer (001); Antibacterial layer (003), including antibacterial microcapsules, and the antibacterial layer (003) is sprayed on the base paper layer (001); Among them, the adhesive layer (004) includes polyurethane, epoxy resin, bentonite, curing agent, etc., and the antibacterial microcapsules include garlic powder.

2. The production process of the high-thickness aluminum foil backing paper according to claim 1, characterized in that, The specific steps include: S1, fully mix softwood pulp and hardwood pulp to prepare a mixed slurry; S2, disperse antibacterial microcapsules into the mixed slurry in step S1, and perform pulp flushing to obtain a diluted slurry; S3, after screening the diluted slurry, form it into a paper web on a wire, then press and dehydrate, and dry to obtain a paper sheet; S4, disperse antibacterial microcapsules in food-grade natural coconut oil to prepare a spraying liquid; S5, spray the sizing liquid obtained in step S4 on both sides of the paper sheet obtained in step S3, and obtain the liner paper through drying; S6, through a composite device, calender the liner paper, and then bond and composite it with the aluminum foil to obtain the aluminum foil liner paper.

3. The production process of the high-pine-thickness aluminum foil backing paper according to claim 1, characterized in that, The preparation method of the antibacterial microcapsules includes: T1, dissolve ethyl cellulose in acetone - isopropanol to obtain a wall material solution; T2, suspend garlic powder in a fluidized bed by air flow, and then through bottom spraying, co-spray silica and the wall material solution to form spherical antibacterial microcapsules.

4. The production process of the high-thickness aluminum foil backing paper according to claim 2, characterized in that, The composite device includes: Unwinding rollers (100), there are two groups, and the unwinding rollers (100) are respectively used for unwinding the liner paper and the aluminum foil; Composite pressing rollers (200), there are two, and the composite pressing rollers (200) are used for composite the liner paper and the aluminum foil; Calendering pressing rollers (300), there are two, and the calendering pressing rollers (300) cooperate correspondingly with the liner paper; Gluing roller (400), used for coating the material of the adhesive layer (004) onto the liner paper.

5. The production process of the aluminum foil backing paper with high pine thickness according to claim 4, characterized in that, The calendering pressing roller (300) includes: Roller barrel (310); Outer soft pressing layer (320), made of soft material, and the outer soft pressing layer (320) is placed outside the roller barrel (310); Among them, one of the roller barrels (310) is fixedly connected to its corresponding outer soft pressing layer (320), and the other roller barrel (310) is movably connected to its corresponding outer soft pressing layer (320).

6. The production process of the high-pine-thickness aluminum foil backing paper according to claim 5, characterized in that, The calendering pressing roller (300) further includes: Heating device (330), installed on the roller barrel (310) where the outer soft pressing layer (320) is movably connected to the roller barrel (310); Punching device (500), installed on the roller barrel (310) where the outer soft pressing layer (320) is fixedly connected to the roller barrel (310), and the punching device (500) includes punching needles (510); Among them, the outer soft pressing layer (320) is provided with an activity groove (321) corresponding to the punching needles (510).

7. The production process of the aluminum foil backing paper with a high pine thickness according to claim 6, characterized in that, The punching device (500) includes: Installation shell (520), installed on the roller barrel (310); Adjusting column (530), threadedly connected to the installation shell (520); Needle sleeve (540), hinged in the installation shell (520); The first spring (550) is placed on both sides of the needle sleeve (540) and connected between the needle sleeve (540) and the mounting shell (520); The counterweight (560) is connected to the needle sleeve (540); Wherein, the punching needle (510) is movably connected in the needle sleeve (540).

8. The production process of the high-thickness aluminum foil backing paper according to claim 7, characterized in that, The needle sleeve (540) includes: The second spring (570) is placed between the punching needle (510) and the needle sleeve (540); The moving plate (600) is comb-shaped, and connecting portions (610) are arranged on both sides of the moving plate (600); Wherein, the punching needle (510) is provided with an abutting portion (580) corresponding to the moving plate (600), the roller (310) is provided with a connecting seat (311) corresponding to the connecting portion (610), the connecting portion (610) extends outside the end of the roller (310), the roller (310) is provided with a fitting groove (312) corresponding to and adapted to the moving plate (600), and the connecting seat (311) is placed on both sides of the fitting groove (312).

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