Degradable corrugated paperboard and preparation process thereof

Abstract

The present application relates to corrugated paperboard production equipment technical field, specifically, a kind of degradable corrugated paperboard and its preparation process, including finished paperboard, the finished paperboard includes two upper and lower parallel face paper layers, the core paper layer being arranged in the inner side of two face paper layers, biodegradable coating is sprayed on the bottom surface of core paper layer, glue block is adhered to the end position of core paper layer and two adhering layers are adhered to the central position.The degradable corrugated paperboard and its preparation process, additional spraying biodegradable coating in finished paperboard, change the physical and chemical properties of corrugated paperboard, enhance the hydrophilicity and hygroscopicity of corrugated paperboard, so that it is easier to be decomposed by microorganism, meanwhile, biodegradable coating can also provide the place for microorganism attachment and reproduction, accelerate the decomposition speed of corrugated paperboard in subsequent recycling.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of corrugated paperboard production equipment, in particular to a degradable corrugated paperboard and a preparation process thereof. BACKGROUND

[0002] The corrugated paperboard is a packaging material made of paper and glue, and its structure is to make continuous corrugated shapes on the flat paper, which has the advantages of lightness, firmness, easy processing, environmental protection, etc., and is widely used in commodity packaging, transportation protection and other fields. In the process of processing a plurality of raw paper into corrugated paperboard, the single facer is one of the important equipment of the production line. The single facer is generally composed of a paper roll support and a single facer, which heats the corrugated core paper and presses it into the required corrugated shape through the corrugated roller, and then glues it through the internal glue roller, and then glues it with the face paper to form a single facer.

[0003] When the glue in the internal glue coating device of the existing single facer is insufficient, it is often necessary to stop for maintenance, observe the remaining content of the glue in the glue supply system, and then supplement the glue through the glue injection hole. The overall process is complicated, which will make the whole production line unable to complete the production of single facer paperboard. At the same time, with the improvement of people's environmental protection consciousness, it is necessary to degrade and reuse the corrugated paperboard after use and recycling. The existing engineering generally adds a spraying device for degradable coating in the production line, which increases the cost of the whole production line.

[0004] In view of this, a degradable corrugated paperboard and a preparation process thereof are provided.

[0005] The information disclosed in this BACKGROUND section is only intended to increase an understanding of the general context in which the present application can be practiced. It is not admitted that any of the information provided in this section is prior art. SUMMARY

[0006] The purpose of the present application is to provide a degradable corrugated paperboard and a preparation process thereof to solve the problems raised in the background.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0008] On the one hand, the present application provides a preparation process of a degradable corrugated paperboard, comprising the following steps:

[0009] I. Raw paper conveying stage

[0010] S1, the selected outer face paper and corrugated raw paper are placed on the automatic logistics conveying belt on the production workshop by forklift;

[0011] S2, start the conveying belt, and send a plurality of groups of outer face paper and corrugated raw paper to the lower side of the corresponding automatic paper receiving machine;

[0012] II. Preheating stage of base paper

[0013] S3, start the automatic paper receiving machine, fix the outer layer of paper and corrugated base paper on the base paper frame, and the operator cooperates with the automatic paper receiving machine to complete the paper traction in the production line, and sends the outer layer of paper and corrugated base paper into the preheating wheel for preheating;

[0014] III. Corrugated base paper processing stage

[0015] S4, the preheated corrugated base paper enters the inside of the fixed machine body from the guide roller at the upper left position of the single-sided machine;

[0016] S5, start the power device in the single-sided machine, drive the two corrugated rollers to rotate towards each other, clamp and press the corrugated base paper into a corrugated shape, and start the vacuum suction device to suck the corrugated base paper onto the corrugated roller below;

[0017] S6, with the start of the power device, the glue roller in the glue coating device rotates, and through the transmission part, the glue roller and the outer shaft in the spraying part rotate;

[0018] S7, after the outer shaft rotates, the shaft body round plate rotates in the inside of the pipe body cylinder, and the biodegradable coating in the outer pipe is intermittently sprayed from the spraying head to the inside of the corrugated base paper;

[0019] S8, the corrugated roller below continues to rotate with the corrugated base paper, and contacts the rotating glue roller, and the corrugated tip of the corrugated base paper adheres to the glue;

[0020] S9, another group of automatic paper receiving machines loaded with corrugated base paper enter the inside of the fixed machine body from the guide roller at the lower right position of the single-sided machine;

[0021] S10, after the corrugated base paper is preheated by the preheating roller, it is contacted with the corrugated base paper with glue under the drive of the pressure roller, and finally the corrugated core paper is pulled out of the inside of the single-sided machine by the conveying roller in the sky bridge conveying belt;

[0022] IV. Bonding stage

[0023] S11, the sky bridge conveying belt sends a plurality of corrugated core papers and outer layer of paper into the inside of the double-layer paste machine, and the outer layer of paper is attached to the outside of the plurality of corrugated core papers to form corrugated paper board;

[0024] V. Drying and trimming stage

[0025] S12, the double-layer paste machine sends the corrugated paper board into the inside of the double-sided machine for drying, and the corrugated paper board is trimmed by the rotary cutting machine when passing through the outlet of the double-sided machine;

[0026] VI. Slitting stage

[0027] S13, the rotary cutting machine continues to send the trimmed corrugated paper into the inside of the slitting machine, starts the slitting machine, and cuts the corrugated paper according to requirements;

[0028] Seven, stacking stage

[0029] S14, the slitting machine sends the cut corrugated paper to the conveying belt of the stacker, starts the stacker, and stacks the cut corrugated paper layer by layer and binds;

[0030] S15, the subsequent worker takes out the bound finished paperboard from the stacker by the forklift and places it in the storage area.

[0031] The above steps use a single facer and an automatic paper receiving machine to prepare corrugated core paper, a double-layer sizing machine, a double facer, a slitting machine, and a stacker are sequentially arranged on the right side horizontal line of the single facer for preparing finished paperboard, and a sky bridge conveying belt for conveying outer layer paper and corrugated base paper is arranged above several groups of the single facer;

[0032] The single facer comprises a fixed machine body, a power device arranged on the front side wall of the fixed machine body, an external load-bearing frame arranged outside the power device, two corrugated rollers rotatably connected between the inner side walls of the fixed machine body, a gluing device arranged below the left side of the two corrugated rollers, a pressure roller arranged in front of the gluing device, a preheating roller arranged below the right side of the pressure roller, a plurality of guide rollers arranged at the corner positions of the inner side walls of the fixed machine body, and a vacuum suction device arranged on the top surface of the fixed machine body;

[0033] The gluing device comprises a gluing cabin, a mounting cabin arranged in the front-rear direction of the gluing cabin, a fixed cover plate arranged on the outer side wall of the mounting cabin, an automatic glue supplementing part arranged below the inside of the gluing cabin for controlling the glue supplementing pump, a gluing roller rotatably connected inside the gluing cabin, a glue scraping roller arranged on the left side horizontal line of the gluing roller for removing excess glue on the surface of the gluing roller during rotation, a spraying part arranged above the inside of the gluing cabin, and a transmission part for transmitting power of the power device;

[0034] The automatic glue supplementing part comprises a floating plate floating above the glue, a plate top fixed rod arranged on the top surface of the floating plate, a rotating shaft arranged above the left side of the floating plate, a moving platform arranged above the rotating shaft, a connecting rod arranged at the end positions of the shaft body supports on the left and right of the rotating shaft, a fixed probe rod arranged on the top surface of the moving platform, and a control box arranged above the fixed probe rod, when the floating plate moves up and down, the connecting rod connected with the plate top fixed rod drives the rotating shaft to rotate, and the connecting rod at the other end of the rotating shaft drives the moving platform to move up and down, with the change of the position of the moving platform, the fixed probe rod intermittently presses the glue supplementing switch on the control box;

[0035] The spraying part comprises an outer connecting pipe connected with the flange of the feeding pump, a transversely arranged extension pipe arranged at the top pipe opening of the outer connecting pipe, branch pipes arranged on the pipe body of the extension pipe, pipe body cylinders arranged at the central position of the branch pipes, an outer connecting shaft penetrating through a plurality of groups of pipe body cylinders, and a shaft body circular plate arranged on the shaft body.

[0036] In the technical scheme of the present application, the power device is fixedly connected to the outer side wall of the fixed fuselage by bolts, the motor in the power device is fixedly connected to the inner bottom surface of the external load-bearing frame by bolts, the front and rear ends of the pressure roller and the preheating roller are both rotatably connected to the inner side walls at the front and rear ends of the fixed fuselage, the front and rear ends of the guide roller are fixedly connected to the inner side walls at the front and rear ends of the fixed fuselage by bolts, and the vacuum adsorption device is fixedly connected to the top surface of the fixed fuselage and the external load-bearing frame by bolts.

[0037] In the technical scheme of the present application, the glue applying bin comprises a bin body frame plate, a plurality of pressure springs fixedly welded to the top position of the right end of the bottom arc-shaped frame plate of the bin body frame plate, a scraper fixedly welded to the top end of the plurality of pressure springs, and a filter box slidingly connected to the front end plate wall of the bottom arc-shaped frame plate of the bin body frame plate.

[0038] In the technical scheme of the present application, a plurality of regularly distributed and vertically penetrating circular holes are formed in the surface of the bottom arc-shaped frame plate of the bin body frame plate, the glue applying area is above the bottom arc-shaped frame plate of the bin body frame plate, the glue storage area is below the bottom arc-shaped frame plate of the bin body frame plate, the glue supplementing area is at the lower left of the bin body frame plate, the spraying area is at the upper left of the bin body frame plate, and a plurality of regularly distributed backflow grooves for returning paint to the spraying area are formed in the surface of the arc-shaped plate at the upper left of the bin body frame plate.

[0039] In the technical scheme of the present application, the mounting bin body is fixedly welded to the outer side wall of the bin body frame plate, the fixed cover plate is fixedly connected to the outer side wall of the bin body frame plate by bolts, a plurality of glue supplementing pipes connected with the external glue supplementing pump are flange-connected to the bottom position of the outer side wall of the bin body frame plate, the top end of the glue supplementing pipe extends to above the glue supplementing area, a backflow pipe for communicating with the bottom of the spraying area is flange-connected to the top position of the outer side wall of the bin body frame plate, the bottom of the backflow pipe is connected with a paint storage container, the glue applying roller is located at the central position of the glue applying area of the bin body frame plate, and the glue scraping roller is located at the upper position of the glue supplementing area of the bin body frame plate.

[0040] In the technical scheme of the present application, the floating plate is slidingly connected to the inside of the glue supplement area in the frame plate of the bin body, the plate top fixed rod is welded and fixed on the top surface of the floating plate through the brackets integrally formed at both ends, the rotating shaft is rotatably connected to the outer side wall of the bin body frame plate, the shaft body brackets at both ends of the rotating shaft are rotatably connected to the connecting rod, the moving platform is slidingly connected to the outer side wall of the bin body frame plate, the fixed probe rod is fixedly connected to the moving platform through bolts, and the control box is fixedly connected to the outer side wall of the bin body frame plate through bolts.

[0041] In the technical scheme of the present application, the extension pipe is connected with the flange of the external connecting pipe, the branch pipe is integrally formed with the extension pipe, the pipe body cylinder is integrally formed with the branch pipe, the through holes with the size matched with the external connecting shaft are formed in the outer side walls of the front and rear ends of the pipe body cylinder, the top flanges of the branch pipes are connected with the spraying heads, and the spraying heads are clamped and fixed to the outer side wall of the bin body frame plate.

[0042] In the technical scheme of the present application, the front and rear ends of the external connecting shaft are rotatably connected to the inner side walls of the front and rear ends of the bin body frame plate, the shaft body round plate is integrally formed with the external connecting shaft, the shaft body round plate is rotatably connected to the inside of the pipe body cylinder, and the plate body through slot with the size matched with the internal pipe diameter of the branch pipe and penetrating left and right is formed in the inside of the shaft body round plate.

[0043] In the technical scheme of the present application, the transmission part comprises two roller body gears fixedly connected to the central shafts of the glue applying roller and the glue scraping roller through the clamping pins, two butt gears rotatably connected to the inner side walls of the installation bin body, two belt pulleys fixedly connected to the central shaft of the glue scraping roller and the outer side wall of the external connecting shaft, and a transmission belt sleeved between the two groups of belt pulleys.

[0044] On the other hand, the present application provides a degradable corrugated paperboard, which comprises a finished paperboard, the finished paperboard comprises two upper and lower parallel face paper layers, a core paper layer arranged inside the two face paper layers, a biodegradable coating layer sprayed on the bottom surface of the core paper layer, a glue applying block adhered to the end position of the core paper layer, and two adhesive layers adhered to the central position.

[0045] The raw material proportion of the face paper layer is: 90% of high wear-resistant wood pulp paper and 10% of hemp pulp.

[0046] The raw material proportion of the core paper layer is: 70% of waste paper pulp, 20% of bamboo pulp and 10% of wood pulp.

[0047] The raw material proportion of the biodegradable coating layer is: 80% of polyhydroxyalkanoate, 8% of plasticizer, 10% of antioxidant and 2% of calcium carbonate.

[0048] The proportion of raw materials of the rubberized block is: natural plant extract 20%; water 40%; corn starch 30%; preservative 10%, the natural plant extract in the formula is prepared from plant oil, plant fiber and natural adhesive according to 5:4:1;

[0049] The proportion of raw materials of the adhesive layer is: surface paper pulp 70%; core paper pulp 30%.

[0050] Compared with the prior art, the beneficial effects of the present application are:

[0051] 1. The degradable corrugated paperboard and its preparation process, the additional biodegradable coating sprayed in the finished paperboard changes the physical and chemical properties of the corrugated paperboard, enhances the hydrophilicity and hygroscopicity of the corrugated paperboard, makes it easier to be decomposed by microorganisms, and at the same time, the biodegradable coating can also provide a place for microorganisms to attach and reproduce, accelerating the decomposition speed of the corrugated paperboard in subsequent recycling and reuse.

[0052] 2. The degradable corrugated paperboard and its preparation process, when the glue in the glue storage area of the gluing device is reduced, the floating plate in the automatic glue supplementing part will lower the height, through the connecting rod rotatingly connected with the plate top fixed rod, the rotating shaft is driven to rotate, and the connecting rod at the other end of the rotating shaft drives the moving platform to move up and down, with the change of the position of the moving platform, the fixed probe rod will intermittently press the glue supplementing switch on the control box, when the glue supplementing switch is pressed, the glue supplementing pump is started immediately, and the glue supplementing pipe automatically supplements glue to the glue supplementing area in the gluing device, ensuring that the production line will not stop production due to insufficient glue in the single-sided machine.

[0053] 3. The degradable corrugated paperboard and its preparation process, by setting the spraying part in the spraying area inside the gluing device, the biodegradable coating spraying device is directly combined with the gluing device, and through the transmission part, the external shaft in the spraying part can rotate with the gluing roller, the biodegradable coating is intermittently sprayed on the inside of the corrugated base paper, the length of the production line is shortened, and the input cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0054] Figure 1 It is a schematic diagram of the overall structure of the invention;

[0055] Figure 2 It is a schematic diagram of the structure of the finished paperboard in the invention;

[0056] Figure 3 It is a schematic diagram of the structure of the single-sided machine in the invention;

[0057] Figure 4 It is a schematic diagram of the structure of the single-sided machine in the invention;

[0058] Figure 5 It is a schematic diagram of the structure of the gluing device in the invention;

[0059] Figure 6 Structure of the glue applying device in the invention;

[0060] Figure 7 Structure of the glue applying device in the invention;

[0061] Figure 8 Structure of the glue applying device in the invention;

[0062] Figure 9 Structure of the glue applying device in the invention;

[0063] Figure 10 Structure of the glue applying device in the invention;

[0064] Figure 11 Structure of the glue applying device in the invention;

[0065] Figure 12 Structure of the glue applying device in the invention;

[0066] Figure 13 Structure of the glue applying device in the invention;

[0067] Figure 14 Structure of the glue applying device in the invention.

[0068] Explanation of the reference signs:

[0069] 1, finished paperboard; 10, surface paper layer; 11, core paper layer; 12, biodegradable coating layer; 13, glue applying block; 14, adhesive layer;

[0070] 2, single facer; 20, fixed machine body; 21, power device; 22, external load bearing frame; 23, corrugating roller; 24, glue applying device; 240, glue applying chamber; 2401, chamber body frame plate; 2402, pressure spring; 2403, scraper; 2404, filter box; 241, mounting chamber body; 242, fixed cover plate; 243, glue supplementing pipe; 244, return pipe; 245, automatic glue supplementing part; 2450, floating plate; 2451, plate top fixed rod; 2452, rotating shaft; 2453, moving platform; 2454, connecting rod; 2455, fixed probe rod; 2456, control box; 246, glue applying roller; 247, glue scraping roller; 248, spraying part; 2480, external connection pipe; 2481, extension pipe; 2482, branch pipe; 2483, pipe body cylinder; 2484, external connection shaft; 2485, shaft body round plate; 2486, spraying head; 249, transmission part; 2490, roller body gear; 2491, butt joint gear; 2492, belt pulley; 2493, transmission belt; 25, pressure roller; 26, preheating roller; 27, guide roller; 28, vacuum suction device;

[0071] 3. Automatic paper receiving machine

[0072] 4. Overhead conveyor

[0073] 5. Double paste machine

[0074] 6. Double-sided machine

[0075] 7. Slitting machine

[0076] 8. Stacking machine DETAILED DESCRIPTION

[0077] The technical solutions in the present application will be described clearly and completely below in combination with the drawings in the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0078] Please refer to Figures 1-14 The present embodiment provides a technical solution:

[0079] A degradable corrugated board, comprising a finished paperboard 1, the finished paperboard 1 comprising two upper and lower parallel face paper layers 10, a core paper layer 11 arranged on the inner side of the two face paper layers 10, a biodegradable coating 12 sprayed on the bottom surface of the core paper layer 11, a glue block 13 adhered to the end position of the core paper layer 11, and two adhesive layers 14 adhered to the central position;

[0080] The raw material ratio of the face paper layer 10 is: 90% of high wear-resistant wood pulp paper and 10% of hemp pulp.

[0081] The raw material ratio of the core paper layer 11 is: 70% of waste paper pulp, 20% of bamboo pulp, and 10% of wood pulp.

[0082] The raw material ratio of the biodegradable coating 12 is: 80% of polyhydroxyalkanoate PHA, 8% of plasticizer, 10% of antioxidant, and 2% of calcium carbonate.

[0083] The raw material ratio of the glue block 13 is: 20% of natural plant extract, 40% of water, 30% of corn starch, and 10% of preservative. The natural plant extract in the formula is prepared by 5 parts of vegetable oil, 4 parts of plant fiber, and 1 part of natural adhesive.

[0084] The raw material ratio of the adhesive layer 14 is: 70% of face paper pulp and 30% of core paper pulp.

[0085] The surface paper layer 10 is used to ensure the wear resistance of the finished paperboard 1, the core paper layer 11 increases the strength of the finished paperboard 1, reduces the weight, and has the effects of heat insulation, heat preservation and shock absorption and buffering, and the biodegradable coating layer 12 is used to change the physical and chemical properties of the corrugated paperboard, specifically, the biodegradable coating layer 12 can enhance the hydrophilicity and hygroscopicity of the corrugated paperboard, so that it is easier to be decomposed by microorganisms, at the same time, the biodegradable coating layer 12 can also provide a place for microorganisms to attach and reproduce, and accelerate the decomposition speed of the corrugated paperboard, and the glue coating block 13 is used to ensure the stable adhesion of the paper inside the finished paperboard 1.

[0086] The preparation process of the degradable corrugated paperboard of the present application comprises the following steps:

[0087] I. Paper conveying stage

[0088] S1, the selected outer layer surface paper and corrugated paper are placed on the automatic logistics conveying belt in the production workshop by the forklift;

[0089] S2, start the conveying belt, and send a plurality of groups of outer layer surface paper and corrugated paper to below the corresponding automatic paper receiving machine 3;

[0090] II. Paper preheating stage

[0091] S3, start the automatic paper receiving machine 3, fix the outer layer surface paper and the corrugated paper on the paper frame, and the operator cooperates with the automatic paper receiving machine 3 to complete the paper traction in the production line, and sends the outer layer surface paper and the corrugated paper into the preheating wheel for preheating;

[0092] III. Corrugated paper processing stage

[0093] S4, the preheated corrugated paper enters the inside of the fixed machine body 20 from the guide roller 27 at the left upper position of the single-sided machine 2;

[0094] S5, start the power device 21 in the single-sided machine 2, drive the two corrugated rollers 23 to rotate towards each other, clamp and press the corrugated paper into corrugated shape, and start the vacuum adsorption device 28 to adsorb the corrugated paper on the corrugated roller 23 below;

[0095] S6, with the start of the power device 21, the glue coating roller 246 in the glue coating device 24 rotates, and through the transmission part 249, the glue coating roller 247 and the outer connecting shaft 2484 in the spraying part 248 are driven to rotate;

[0096] S7, after the outer connecting shaft 2484 rotates, the shaft body disc 2485 rotates in the inside of the pipe body cylinder 2483, and the biodegradable coating in the outer connecting pipe 2480 is intermittently sprayed by the spraying head 2486 to the inside of the corrugated paper;

[0097] S8, the lower corrugated roller 23 continues to rotate while contacting the rotating glue roller 246, and the corrugated tip of the corrugated paper adheres to the glue;

[0098] S9, another set of automatic paper receiving machine 3 loading corrugated paper, the corrugated paper is introduced into the inside of the fixed machine body 20 from the guide roller 27 at the right lower position of the single facer 2;

[0099] S10, after the corrugated paper is preheated by the preheating roller 26, it is contacted with the corrugated paper with glue under the driving of the pressure roller 25, and finally the corrugated core paper is pulled out of the inside of the single facer 2 by the conveying roller in the sky bridge conveying belt 4;

[0100] Four, the bonding stage

[0101] S11, the sky bridge conveying belt 4 sends several corrugated core papers and outer layer papers into the inside of the double layer pasting machine 5, and the outer layer paper is attached to the outside of the several corrugated core papers to form corrugated paper board;

[0102] Five, drying and trimming stage

[0103] S12, the double layer pasting machine 5 sends the corrugated paper board into the inside of the double facer 6 for drying, and when the corrugated paper board passes through the outlet of the double facer 6, the trimming of the corrugated paper board is carried out by the rotary cutting machine;

[0104] Six, the cutting stage

[0105] S13, the rotary cutting machine continues to send the trimmed corrugated paper board into the inside of the cutting machine 7, and starts the cutting machine 7 to cut the corrugated paper board according to the demand;

[0106] Seven, the stacking stage

[0107] S14, the cutting machine 7 sends the cut corrugated paper board to the conveying belt of the stacking machine 8, and starts the stacking machine 8 to stack and bind the cut corrugated paper board layer by layer;

[0108] S15, the subsequent workers take out the bound finished paper board 1 from the stacking machine 8 by forklift and place it in the storage area.

[0109] In this embodiment, as shown in Figure 1 the above steps, the corrugated core paper is prepared by the single facer 2 and the automatic paper receiving machine 3, the double layer pasting machine 5, the double facer 6, the cutting machine 7 and the stacking machine 8 for preparing the finished paper board 1 are arranged on the right side horizontal line of the single facer 2 in sequence, and the sky bridge conveying belt 4 for conveying the outer layer paper and the corrugated paper is arranged above the several sets of single facer 2;

[0110] Further, the single facer 2 is used for preparing single-layer corrugated core paper, the automatic paper receiving machine 3 is used for sending the raw paper into the single facer 2, the catwalk conveying belt 4 is used for conveying the prepared single-layer corrugated core paper, the double-layer pasting machine 5 is used for pasting multiple groups of single-layer corrugated core paper together, the double facer 6 is used for heating and curing the pasted multiple groups of single-layer corrugated core paper into corrugated paperboard, and drying and cold setting the corrugated paperboard, the slitting machine 7 is used for cutting the cold set corrugated paperboard according to the preparation requirements of manufacturers, and the stacking machine 8 is used for stacking the cut corrugated paperboard together, facilitating subsequent workers to transport by forklifts.

[0111] In this embodiment, as shown in Figures 3-4 The single facer 2 includes a fixed body 20, a power device 21 arranged on the front side wall of the fixed body 20, an external load-bearing frame 22 arranged outside the power device 21, two corrugated rollers 23 rotatably connected between the inner side walls of the fixed body 20, a gluing device 24 arranged below the left side of the two corrugated rollers 23, a pressure roller 25 arranged in front of the gluing device 24, a preheating roller 26 arranged below the right side of the pressure roller 25, a plurality of guide rollers 27 arranged at the corner positions of the inner side walls of the fixed body 20, and a vacuum suction device 28 arranged on the top surface of the fixed body 20.

[0112] Further, the power device 21 is fixedly connected to the outer side wall of the fixed body 20 by bolts, the motor in the power device 21 is fixedly connected to the inner bottom surface of the external load-bearing frame 22 by bolts, the front and rear ends of the pressure roller 25 and the preheating roller 26 are rotatably connected to the inner side walls at the front and rear ends of the fixed body 20, the two ends of the guide roller 27 are fixedly connected to the inner side walls at the front and rear ends of the fixed body 20 by bolts, and the vacuum suction device 28 is fixedly connected to the top surfaces of the fixed body 20 and the external load-bearing frame 22 by bolts.

[0113] Further, the fixed body 20 ensures the strength of the overall structure of the single facer 2, the power device 21 is used to drive the corrugated rollers 23, the pressure roller 25, and the gluing roller 246 in the gluing device 24 to rotate after being started, the external load-bearing frame 22 is used to provide a fixed platform for the power device 21 and the vacuum suction device 28, the corrugated rollers 23 are used to press the raw paper into a corrugated shape, the pressure roller 25 is used to ensure that the face paper can be attached to the corrugated core paper, the preheating roller 26 is used to soften the paper, the guide roller 27 is used to change the transportation direction of the paper, and the vacuum suction device 28 is used to make the corrugated raw paper adsorbed on the corrugated roller 23 below.

[0114] In this embodiment, as shown in Figures 5-14As shown, the glue applying device 24 comprises a glue applying cabin 240, a mounting cabin body 241 arranged at the front and back ends of the glue applying cabin 240, a fixed cover plate 242 arranged at the outer cabin wall of the mounting cabin body 241, an automatic glue supplementing part 245 arranged at the lower part inside the glue applying cabin 240 for controlling the glue supplementing pump to supplement glue, a glue applying roller 246 rotatably connected to the inside of the glue applying cabin 240, a glue scraping roller 247 arranged at the horizontal line on the left side of the glue applying roller 246 for removing the excess glue on the surface of the glue applying roller 246 when rotating, a spraying part 248 arranged at the upper part inside the glue applying cabin 240, and a transmission part 249 for transmitting the power of the power device 21.

[0115] Specifically, the glue applying cabin 240 comprises a cabin body frame plate 2401, a plurality of pressure springs 2402 welded and fixed at the top position of the right end of the bottom arc-shaped frame plate of the cabin body frame plate 2401, a scraper 2403 welded and fixed at the top end of the plurality of pressure springs 2402, and a filter box 2404 slidingly connected to the front end plate wall of the bottom arc-shaped frame plate of the cabin body frame plate 2401.

[0116] Further, a plurality of circular holes regularly distributed and penetrating through the upper and lower parts are formed on the surface of the bottom arc-shaped frame plate of the cabin body frame plate 2401, the upper part of the bottom arc-shaped frame plate of the cabin body frame plate 2401 is a glue applying area, the lower part of the bottom arc-shaped frame plate of the cabin body frame plate 2401 is a glue storage area for storing glue, the lower left part of the cabin body frame plate 2401 is a glue supplementing area for placing the automatic glue supplementing part 245, the upper left part of the cabin body frame plate 2401 is a spraying area for placing the spraying part 248, and the surface of the arc-shaped plate at the upper left part of the cabin body frame plate 2401 is provided with a plurality of regularly distributed backflow grooves for returning the glue to the spraying area.

[0117] Further, the cabin body frame plate 2401 is used to ensure the strength of the overall structure of the glue applying cabin 240, the pressure springs 2402 cooperate with the scraper 2403 to remove the paper scraps on the surface of the glue applying roller 246 when the glue applying roller 246 rotates, the filter box 2404 is used to filter the paper scraps on the glue, and the left end of the arc-shaped frame plate in the cabin body frame plate 2401 is used to remove the glue on the surface of the glue scraping roller 247 so that the glue can return to the inside of the glue storage area and the glue supplementing area in the glue applying cabin 240.

[0118] In this embodiment, as shown in Figures 5-6As shown, the installation warehouse body 241 is welded and fixed on the outer side wall of the warehouse body frame plate 2401, the fixed cover plate 242 is fixedly connected with the outer side wall of the warehouse body frame plate 2401 through bolts, the flange at the bottom position of the outer side wall of the warehouse body frame plate 2401 is connected with a plurality of glue supplement pipes 243 connected with external glue supplement pumps, the top end of the glue supplement pipe 243 extends to the upper side of the glue supplement area, the flange at the position close to the top of the outer side wall of the warehouse body frame plate 2401 is connected with a backflow pipe 244 used for communicating with the bottom of the spraying area, the bottom of the backflow pipe 244 is connected with a container for storing paint, the glue roller 246 is located at the central position of the glue area of the warehouse body frame plate 2401, and the glue scraping roller 247 is located at the upper position of the glue supplement area of the warehouse body frame plate 2401.

[0119] Further, the installation warehouse body 241 and the fixed cover plate 242 are used to ensure that the glue coating device 24 can be fixed in the inside of the fixed machine body 20, after the glue pump is started, the glue supplement pipe 243 is used for supplementing glue to the glue supplement area in the glue coating warehouse 240, the backflow pipe 244 is used for making the excess paint back to the container for storing paint, facilitating resource reuse, and the glue roller 246 is used for transporting glue to the surface of the corrugated roller 23.

[0120] In the embodiment, as shown in the figure, Figure 10 The automatic glue supplement part 245 includes a floating plate 2450 floating on the glue, a plate top fixed rod 2451 arranged on the top surface of the floating plate 2450, a rotating shaft 2452 arranged at the upper left side of the floating plate 2450, a moving platform 2453 arranged above the rotating shaft 2452, a connecting rod 2454 arranged at the end position of the shaft body support of the rotating shaft 2452, a fixed probe rod 2455 arranged on the top surface of the moving platform 2453, and a control box 2456 arranged at the upper position of the fixed probe rod 2455. When the floating plate 2450 moves up and down, the connecting rod 2454 connected with the plate top fixed rod 2451 drives the rotating shaft 2452 to rotate, and the connecting rod 2454 at the other end of the rotating shaft 2452 drives the moving platform 2453 to move up and down. With the change of the position of the moving platform 2453, the fixed probe rod 2455 intermittently presses the glue supplement switch on the control box 2456;

[0121] Further, the floating plate 2450 is slidingly connected in the inside of the glue supplement area of the warehouse body frame plate 2401, the plate top fixed rod 2451 is welded and fixed on the top surface of the floating plate 2450 through the supports integrally formed at both ends, the rotating shaft 2452 is rotatably connected with the outer side wall of the warehouse body frame plate 2401, the shaft body supports at both ends of the rotating shaft 2452 are rotatably connected with the connecting rod 2454, the moving platform 2453 is slidingly connected with the outer side wall of the warehouse body frame plate 2401, the fixed probe rod 2455 is fixedly connected with the moving platform 2453 through bolts, and the control box 2456 is fixedly connected with the outer side wall of the warehouse body frame plate 2401 through bolts.

[0122] Further, when the glue in the glue storage area of the glue applying cabin 240 is reduced, the floating plate 2450 in the automatic glue supplementing part 245 will be lowered in height, and through the connecting rod 2454 rotatably connected with the top fixing rod 2451, the rotating shaft 2452 will be rotated, and the connecting rod 2454 at the other end of the rotating shaft 2452 will drive the moving platform 2453 to move up and down. With the change of the position of the moving platform 2453, the fixed probe rod 2455 will intermittently press the glue supplementing switch on the control box 2456, and when the glue supplementing switch is pressed, the glue supplementing pump will be started to automatically supplement glue from the glue supplementing pipe 243 to the glue supplementing area in the glue applying cabin 240, so as to ensure that the production line will not stop production due to insufficient glue in the single-sided machine.

[0123] In this embodiment, as shown in Figures 12-13 The spraying part 248 includes an external connecting pipe 2480 connected with the flange of the feeding pump, a transversely arranged extension pipe 2481 arranged at the top pipe opening of the external connecting pipe 2480, branch pipes 2482 arranged on the pipe body of the extension pipe 2481, pipe body cylinders 2483 arranged at the center position of the branch pipes 2482, an external connecting shaft 2484 penetrating through a plurality of groups of pipe body cylinders 2483, and a shaft body round plate 2485 arranged on the shaft body of the external connecting shaft 2484. When the shaft body round plate 2485 rotates, the plate body through slot inside the shaft body round plate 2485 will intermittently connect the two ends of the branch pipes 2482.

[0124] Specifically, the extension pipe 2481 is connected with the flange of the external connecting pipe 2480, the branch pipes 2482 are integrally formed with the extension pipe 2481, and the pipe body cylinders 2483 are integrally formed with the branch pipes 2482. The outer side walls at the front and rear ends of the pipe body cylinders 2483 are provided with through holes with sizes matched with the external connecting shaft 2484. The top flanges of a plurality of branch pipes 2482 are connected with spraying heads 2486, and the spraying heads 2486 are clamped and fixed to the outer side walls of the cabin body frame plate 2401.

[0125] Further, the front and rear ends of the external connecting shaft 2484 are rotatably connected with the inner side walls at the front and rear ends of the cabin body frame plate 2401. The shaft body round plate 2485 is integrally formed with the external connecting shaft 2484, and the shaft body round plate 2485 is rotatably connected with the inside of the pipe body cylinder 2483. The inside of the shaft body round plate 2485 is provided with a plate body through slot with sizes matched with the internal pipe diameters of the branch pipes 2482 and penetrating through left and right sides.

[0126] Further, the outer pipe 2480 is connected with the feeding pump, and transports the external coating to the extension pipe 2481, and the extension pipe 2481 cooperates with the branch pipe 2482 to ensure that the coating can be uniformly transported to the spraying head 2486. When the power device 21 is started, the glue roller 246 in the glue applying device 24 rotates, and through the transmission part 249, the glue scraping roller 247 and the outer shaft 2484 in the spraying part 248 rotate, and after the outer shaft 2484 rotates, the shaft body disc 2485 rotates in the inner pipe cylinder 2483, and the biodegradable coating in the outer pipe 2480 is intermittently sprayed to the inner side of the corrugated paper by the spraying head 2486.

[0127] In the embodiment, as shown in the figure, Figure 14 The transmission part 249 includes two roller gears 2490 fixedly connected with the center shafts of the glue roller 246 and the glue scraping roller 247 respectively, two butt gears 2491 rotatably connected with the inner wall of the installation bin body 241, two belt pulleys 2492 fixedly connected with the center shaft of the glue scraping roller 247 and the outer wall of the outer shaft 2484 respectively, and a transmission belt 2493 sleeved between the two groups of belt pulleys 2492.

[0128] Further, when the roller gear 2490 fixedly connected with the center shaft of the glue roller 246 rotates, the two butt gears 2491 are driven to rotate, and the other roller gear 2490 is driven to rotate together with the glue scraping roller 247, and the belt pulley 2492 fixedly connected with the center shaft of the glue scraping roller 247 is driven to rotate, so that the outer shaft 2484 is driven to rotate together with the upper belt pulley 2492 through the transmission belt 2493.

[0129] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only preferred examples of the present application, and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A process for the preparation of degradable corrugated paperboard, characterized by: The method comprises the following steps: I. Base paper conveying stage S1, the selected outer layer paper and corrugated base paper are placed on the automatic logistics conveying belt in the production workshop by forklift; S2, start the conveying belt, and send several groups of outer layer paper and corrugated base paper to the lower part of the automatic paper receiving machine (3); II. Base paper preheating stage S3, start the automatic paper receiving machine (3), fix the outer layer paper and corrugated base paper on the base paper frame, and the operator cooperates with the automatic paper receiving machine (3) to complete the paper traction in the production line, and sends the outer layer paper and corrugated base paper into the preheating roller for preheating; III. Corrugated base paper processing stage S4, the preheated corrugated base paper enters the inside of the fixed machine body (20) from the guide roller (27) at the upper left position of the single-sided machine (2); S5, start the power device (21) in the single-sided machine (2), drive the two corrugated rollers (23) to rotate towards each other, clamp and press the corrugated base paper into a corrugated shape, and start the vacuum suction device (28) to suck the corrugated base paper onto the corrugated roller (23) below; S6, with the start of the power device (21), the glue applying roller (246) in the glue applying device (24) rotates, drives the glue scraping roller (247) and the external shaft (2484) in the spraying part (248) to rotate through the transmission part (249); S7, after the external shaft (2484) rotates, the shaft body disc (2485) rotates in the inside of the pipe body cylinder (2483), and the biodegradable coating in the external pipe (2480) is intermittently sprayed from the spraying head (2486) to the inside of the corrugated base paper; S8, the corrugated roller (23) below continues to rotate with the corrugated base paper, and is in contact with the rotating glue applying roller (246), and the corrugated tip of the corrugated base paper adheres to the glue; S9, another group of automatic paper receiving machines (3) loaded with corrugated base paper enter the inside of the fixed machine body (20) from the guide roller (27) at the lower right position of the single-sided machine (2); S10, after the corrugated base paper is preheated by the preheating roller (26), it is in contact with the corrugated base paper with glue under the drive of the pressure roller (25), and finally the corrugated core paper is pulled out of the inside of the single-sided machine (2) by the conveying roller in the sky bridge conveying belt (4); IV. Bonding stage S11, the sky bridge conveying belt (4) sends several corrugated core papers and outer layer papers into the inside of the double-layer pasting machine (5), pastes the outer layer paper on the outside of the several corrugated core papers to form corrugated paper boards; V. Drying and edge trimming stage S12, the double-layer pasting machine (5) sends the corrugated paper boards into the inside of the double-sided machine (6) for drying, and when the corrugated paper boards pass through the outlet of the double-sided machine (6), the rotary cutting machine trims the edges of the corrugated paper boards; VI. Slitting stage S13, the rotary cutting machine continues to send the trimmed corrugated paper boards into the inside of the slitting machine (7), starts the slitting machine (7), and according to the requirements, the corrugated paper boards are cut; VII. Piling stage S14, the slitting machine (7) sends the cut corrugated paper boards onto the conveying belt of the piling machine (8), starts the piling machine (8), and piles and binds the cut corrugated paper boards layer by layer. S15, the subsequent workers take the finished paperboard (1) from the stacking machine (8) by the forklift and place it in the storage area; The above steps adopt single facer (2) and automatic paper receiving machine (3) to prepare corrugated core paper, the right side horizontal line of the single facer (2) is sequentially provided with double-layer sizing machine (5), double facer (6), slitting machine (7) and stacking machine (8) for preparing finished paperboard (1), the upper side of several groups of the single facer (2) is provided with sky bridge conveying belt (4) for conveying outer layer paper and corrugated base paper; The single facer (2) comprises fixed machine body (20), power device (21) arranged on the front side wall of the fixed machine body (20), external load-bearing frame (22) arranged outside the power device (21), two corrugated rollers (23) rotatably connected between the inner side walls of the fixed machine body (20), glue coating device (24) arranged below the left side of the two corrugated rollers (23), pressure roller (25) arranged in front of the glue coating device (24), preheating roller (26) arranged below the right side of the pressure roller (25), several groups of guide rollers (27) arranged at the corner positions of the inner side walls of the fixed machine body (20), and vacuum suction device (28) arranged on the top surface of the fixed machine body (20); The glue coating device (24) comprises glue coating bin (240), mounting bin body (241) arranged in the front and back directions of the glue coating bin (240), fixed cover plate (242) arranged at the outer side bin wall of the mounting bin body (241), automatic glue supplementing part (245) arranged below the inside of the glue coating bin (240) for controlling the glue supplementing pump, glue coating roller (246) rotatably connected inside the glue coating bin (240), glue scraping roller (247) arranged on the left side horizontal line of the glue coating roller (246) for removing excess glue on the surface of the glue coating roller (246) during rotation, spraying part (248) arranged above the inside of the glue coating bin (240), and transmission part (249) for transmitting power of the power device (21); The glue coating bin (240) comprises bin body frame plate (2401), a plurality of circular holes regularly distributed and penetrating up and down are formed on the surface of the bottom arc frame plate of the bin body frame plate (2401), the top of the bottom arc frame plate of the bin body frame plate (2401) is a glue coating area, the bottom of the bottom arc frame plate of the bin body frame plate (2401) is a glue storage area for storing glue, the left bottom of the bin body frame plate (2401) is a glue supplementing area for placing the automatic glue supplementing part (245), the left top of the bin body frame plate (2401) is a spraying area for placing the spraying part (248), and a plurality of reflux grooves regularly distributed for returning paint to the spraying area are formed on the surface of the arc plate at the left top of the bin body frame plate (2401); The automatic glue supplementing part (245) comprises a floating plate (2450) floating above the glue, a plate top fixing rod (2451) arranged on the top surface of the floating plate (2450), a rotating shaft (2452) arranged above the left upper portion of the floating plate (2450), a moving platform (2453) arranged above the rotating shaft (2452), a connecting rod (2454) arranged at the end portions of the left and right shaft body supports of the rotating shaft (2452), a fixed probe rod (2455) arranged on the top surface of the moving platform (2453), and a control box (2456) arranged at the position above the fixed probe rod (2455). When the floating plate (2450) moves up and down, the connecting rod (2454) connected with the plate top fixing rod (2451) drives the rotating shaft (2452) to rotate, and the connecting rod (2454) at the other end of the rotating shaft (2452) drives the moving platform (2453) to move up and down. With the change of the position of the moving platform (2453), the fixed probe rod (2455) intermittently presses the glue supplementing switch of the control box (2456); The spraying part (248) comprises an external connecting pipe (2480) connected with the flange of the feeding pump, a transversely arranged extension pipe (2481) arranged at the top pipe opening of the external connecting pipe (2480), branch pipes (2482) arranged on the pipe bodies of the extension pipes (2481), pipe body cylinders (2483) arranged at the central positions of the branch pipes (2482), external connecting shafts (2484) penetrating through a plurality of groups of pipe body cylinders (2483), and shaft body round plates (2485) arranged on the shaft bodies of the external connecting shafts (2484). The outer side walls of the front and rear ends of the pipe body cylinders (2483) are provided with through holes matched with the sizes of the external connecting shafts (2484). The shaft body round plates (2485) are rotatably connected to the interiors of the pipe body cylinders (2483). The interiors of the shaft body round plates (2485) are provided with plate body through grooves which are matched with the sizes of the internal diameters of the branch pipes (2482) and which are left and right through. When the shaft body round plates (2485) rotate, the plate body through grooves in the interiors of the shaft body round plates (2485) intermittently connect the two ends of the branch pipes (2482). The transmission part (249) comprises two roller body gears (2490) fixedly connected to the central shafts of the glue applying roller (246) and the glue scraping roller (247) through the snap pins, two abutting gears (2491) rotatably connected to the inner side walls of the installation bin body (241), two belt pulleys (2492) fixedly connected to the central shaft of the glue scraping roller (247) and the outer side wall of the external connecting shaft (2484), and a transmission belt (2493) sleeved between the two groups of belt pulleys (2492).

2. The degradable corrugated paperboard manufacturing process of claim 1, wherein: The power unit (21) is fixedly connected to the outer wall of the fixed body (20) by bolts. The motor in the power unit (21) is fixedly connected to the inner bottom surface of the outer support frame (22) by bolts. The front and rear ends of the pressure roller (25) and the preheating roller (26) are rotatably connected to the inner side walls of the front and rear ends of the fixed body (20). The two ends of the guide roller (27) are fixedly connected to the inner side walls of the front and rear ends of the fixed body (20) by bolts. The vacuum adsorption device (28) is fixedly connected to the top surface of the fixed body (20) and the outer support frame (22) by bolts.

3. The degradable corrugated paperboard manufacturing process of claim 2, wherein: The adhesive coating chamber (240) includes several pressure springs (2402) welded and fixed to the top right end of the bottom arc-shaped frame plate of the chamber body frame plate (2401), scrapers (2403) welded and fixed to the top of the pressure springs (2402), and filter boxes (2404) slidably connected to the front wall of the bottom arc-shaped frame plate of the chamber body frame plate (2401).

4. The process for the preparation of degradable corrugated paperboard according to claim 3, characterized by the fact that: The installation chamber (241) is welded and fixed to the outer wall of the chamber frame plate (2401). The fixing cover plate (242) is fixedly connected to the outer wall of the chamber frame plate (2401) by bolts. At the bottom of the outer wall of the chamber frame plate (2401), a number of glue-applying pipes (243) connected to an external glue-applying water pump are flanged. The top of the glue-applying pipes (243) extends to the top of the glue-applying area. At the top of the outer wall of the chamber frame plate (2401), a return pipe (244) for communicating with the bottom of the spraying area is flanged. The bottom of the return pipe (244) is connected to a container for storing paint. The glue-applying roller (246) is located at the center of the glue-applying area of ​​the chamber frame plate (2401). The glue-scraping roller (247) is located above the glue-applying area of ​​the chamber frame plate (2401).

5. The process for the preparation of degradable corrugated paperboard according to claim 4, characterized by the fact that: The float (2450) is slidably connected to the inside of the glue-applying area in the silo frame plate (2401). The top fixing rod (2451) is welded and fixed to the top surface of the float (2450) by brackets integrally formed at both ends. The rotating shaft (2452) is rotatably connected to the outer wall of the silo frame plate (2401). The shaft brackets at both ends of the rotating shaft (2452) are rotatably connected to the connecting rod (2454). The moving platform (2453) is slidably connected to the outer wall of the silo frame plate (2401). The fixed probe (2455) is fixedly connected to the moving platform (2453) by bolts. The control box (2456) is fixedly connected to the outer wall of the silo frame plate (2401) by bolts.

6. The process for the preparation of degradable corrugated paperboard according to claim 5, characterized by the fact that: The extension pipe (2481) is flanged and connected to the outer pipe (2480). The branch pipe (2482) is integrally formed with the extension pipe (2481). The pipe body cylinder (2483) is integrally formed with the branch pipe (2482). The top flanges of several branch pipes (2482) are connected to spray heads (2486). The spray heads (2486) are snapped and fixed to the outer side wall of the silo frame plate (2401).

7. The process for the preparation of degradable corrugated paperboard according to claim 6, characterized by the fact that: The front and rear ends of the outer shaft (2484) are rotatably connected to the inner side walls at the front and rear ends of the warehouse body frame plate (2401), and the shaft body circular plate (2485) is integrally formed with the outer shaft (2484).

8. A degradable corrugated paperboard, prepared by the degradable corrugated paperboard manufacturing process of claim 7, characterized by: The application relates to a finished paperboard (1) which comprises two parallel face paper layers (10), a core paper layer (11) arranged on the inner side of the two face paper layers (10), a biodegradable coating (12) sprayed on the bottom surface of the core paper layer (11), a glue block (13) adhered to the end position of the core paper layer (11), and two adhesive layers (14) adhered to the central position. The proportion of raw materials of the face paper layer (10) is as follows: 90% of high wear-resistant wood pulp paper and 10% of hemp pulp The proportion of raw materials of the core paper layer (11) is as follows: 70% of waste paper pulp, 20% of bamboo pulp and 10% of wood pulp. The proportion of raw materials of the biodegradable coating (12) is as follows: 80% of polyhydroxyalkanoate (PHA), 8% of plasticizer, 10% of antioxidant and 2% of calcium carbonate. The proportion of raw materials of the glue block (13) is as follows: 20% of natural plant extract, 40% of water, 30% of corn starch and 10% of preservative, and the natural plant extract in the formula is prepared from plant oil, plant fiber and natural adhesive in a ratio of 5:4:

1. The proportion of raw materials of the adhesive layer (14) is as follows: 70% of face paper pulp and 30% of core paper pulp.

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