Preparation method and device for an aqueous laminating adhesive

Abstract

The present invention relates to the technical field of water-based laminating adhesives, and specifically discloses a preparation method and device for a water-based laminating adhesive, including the following steps: S1: Take the following raw materials for the water-based laminating adhesive in parts by weight: 1-5 parts of hydroxyethyl acrylate, 18-29 parts of butyl acrylate, 0.5-1.2 parts of emulsifier, 5-8 parts of styrene, 0.2-0.4 parts of initiator, 1-7 parts of tackifying resin, and 20-35 parts of deionized water. In the present invention, the filter disk rotates in the tank body, the electric slider moves downward on the guide rail, and the mutual adsorption of the first magnetic block and the second magnetic block drives the filter disk to slide downward in the tank body. When the filter disk rotates, the convex blocks at the bottom are driven to rotate and frequently collide with the iron wire, which can cause the iron wire to vibrate. During the vibration process of the iron wire, the barbs on the outer wall of the iron wire are driven to vibrate to pierce the bubbles in the water-based laminating adhesive, so as to eliminate the bubbles in the water-based laminating adhesive, and avoid the influence of a large number of bubbles in the water-based laminating adhesive on the bonding strength of the water-based laminating adhesive.

Description

Technical Field

[0001] The present invention relates to the technical field of water-based laminating adhesives, and in particular to a preparation method and device for a water-based laminating adhesive. Background Art

[0002] Water-based laminating adhesives are used to process the surface of printed products to improve the surface gloss, strength, and aesthetic effect of printed products. To measure the quality of lamination, it is also necessary to examine its brightness, strength, adhesion, etc.

[0003] For example, Chinese Patent with application number 201611146339.8 discloses "a water-based laminating adhesive and its preparation method. The raw materials of the water-based laminating adhesive include deionized water, butyl acrylate, methacrylic acid, diisooctyl acrylate, diacetone acrylamide, adipic dihydrazide, tert-butyl hydroperoxide, initiator, initiator. The present invention prepares a milky white liquid with a blue glow through a pre-emulsification process, with a viscosity of 15 - 25 seconds, a solid content of 48% - 55%, and a film-forming substance that is colorless and transparent"; however, after the above water-based laminating adhesive is prepared, a large number of bubbles will be contained in the prepared water-based laminating adhesive, and the bubbles contained in the water-based laminating adhesive will affect the bonding strength during the later use of the water-based laminating adhesive. Therefore, to solve such problems, we propose a preparation method and device for a water-based laminating adhesive. Summary of the Invention

[0004] The purpose of the present invention is to solve the disadvantages existing in the prior art, and to propose a preparation method and device for a water-based laminating adhesive.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A preparation method for a water-based laminating adhesive includes the following steps:

[0007] S1: Take the following raw materials for the water-based laminating adhesive by weight:

[0008] 1 - 5 parts of hydroxyethyl acrylate, 18 - 29 parts of butyl acrylate, 0.5 - 1.2 parts of emulsifier, 5 - 8 parts of styrene, 0.2 - 0.4 parts of initiator, 1 - 7 parts of tackifying resin, 20 - 35 parts of deionized water;

[0009] S2: Pour deionized water into an emulsifying bucket, add hydroxyethyl acrylate to the emulsifying bucket and stir evenly to obtain solution A;

[0010] S3: Add butyl acrylate to solution A in S2 and stir for 15 - 20 min to obtain solution B;

[0011] S4: Add styrene and tackifying resin to solution B in S3 simultaneously and stir evenly to obtain solution C;

[0012] S5: Add the emulsifier to solution C in S4, stir evenly and then start emulsification for 1.2 - 2.5 hours to obtain emulsion A.

[0013] S6: Add 2 / 3 of the initiator to the emulsion in S5 to obtain emulsion B.

[0014] S7: Pour emulsion B in S6 into the reaction kettle for reaction, heat up and stir emulsion B in the reaction kettle, and stop after reacting for 1.5 - 2 hours in the reaction kettle.

[0015] S8: Drop the remaining 1 / 3 of the initiator into the reaction kettle in S7, and control the dropping time of the remaining 1 / 3 of the initiator within 2 - 3.5 hours, raise the temperature of the reaction kettle to 80 - 90 °C for heat preservation for 1.5 hours, and finally cool the emulsion B in the reaction kettle to below 40 °C, then carry out an elimination reaction on emulsion B and control the pH value of the obtained emulsion B within 6.8 - 7.2 to obtain the water - based laminating adhesive.

[0016] S9: Pour the water - based laminating adhesive obtained in S8 into the preparation device for defoaming treatment, and use the preparation device to filter the obtained water - based laminating adhesive to finally obtain the finished water - based laminating adhesive.

[0017] Preferably, the stirring speed of the reaction kettle in S7 is controlled within 800 - 1000 rmp.

[0018] A preparation device for a water - based laminating adhesive in the present invention includes a tank body. Two rotating rings are rotatably sleeved on the outer wall of the tank body. The two rotating rings are arranged vertically. Two fixing blocks are fixed on the outer wall of the rotating ring. A strip - shaped plate is fixed at the end of the fixing block. A guide rail is installed on the side of the strip - shaped plate close to the tank body. An electric slider is slidably installed on the guide rail. A first magnetic attraction block is installed on the side of the electric slider close to the tank body. A filter disk is slidably installed in the tank body. A second magnetic attraction block that mutually attracts with the first magnetic attraction block is arranged on the outer wall of the filter disk. When the first magnetic attraction block and the second magnetic attraction block are attracted, the filter disk is in a static state in the tank body. A rotating mechanism for rotating the filter disk is arranged on the outer wall of the tank body, and a puncturing mechanism for puncturing bubbles in the water - based laminating adhesive is arranged in the tank body.

[0019] Preferably, the rotating mechanism includes a fixing plate fixed on the outer wall of the tank body. A motor is installed at the bottom of the fixing plate. The output shaft of the motor is connected with a gear. A toothed ring is installed on the side of the strip - shaped plate away from the tank body. The toothed ring meshes with the gear, and the tank body is located inside the inner circle of the toothed ring.

[0020] Preferably, the puncturing mechanism includes a material receiving box installed at the bottom of the tank body. A number of elastic iron wires are installed on the inner bottom wall of the material receiving box. The iron wires are in a vertical state in the natural state. The top ends of the iron wires penetrate through the material receiving box and the tank body and extend into the tank body. The top ends of the iron wires are located below the filter disc, and a number of protrusions are provided at the bottom of the filter disc.

[0021] Preferably, a number of barbs are provided on the outer wall of the iron wire. A through hole communicating with each other is provided on the contact surface between the tank body and the material receiving box, and the iron wire is located in the through hole.

[0022] Preferably, a delivery port is inclined downward on the outer wall of the tank body. A collection box communicating with the delivery port is installed on the outer wall of the tank body. An electronic valve is installed in the delivery port. The collection box is located inside the inner ring of the gear ring and below the top end of the iron wire.

[0023] Preferably, the tank body is communicated with a storage box. The storage box is communicated with the tank body through a connecting pipe. The communication port between the connecting pipe and the tank body is located below the filter disc, and a water pump is installed in the connecting pipe. The storage box is located inside the inner ring of the gear ring. The storage box is loaded with an antifoaming agent and is located below the top end of the iron wire.

[0024] Preferably, an annular sliding groove is provided on the outer wall of the tank body. The rotating ring is slidably installed in the annular sliding groove. A wear-resistant plate is installed on the side of the first magnetic block close to the tank body. The side of the wear-resistant plate close to the tank body is in contact with the outer wall of the tank body. An inlet communicating with the tank body is provided at the top of the tank body, and an outlet is provided on the side of the material receiving box.

[0025] Preferably, two groups of support columns are symmetrically installed at the bottom of the tank body. The bottom ends of the support columns are connected with a chassis, and the material receiving box is located between the tank body and the chassis.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] 1: In the present invention, the filter disc rotates in the tank body, and the electric slider moves downward on the guide rail. Then, through the mutual adsorption of the first magnetic block and the second magnetic block, the filter disc is driven to slide downward in the tank body until the convex block at the bottom of the filter disc comes into contact with the iron wire. When the filter disc rotates, the convex block at the bottom drives the filter disc to rotate and frequently collides with the iron wire, which can cause the iron wire to vibrate. During the vibration process of the iron wire, the barbs on the outer wall of the iron wire are driven to vibrate to puncture the bubbles in the water-based laminating adhesive, so that the bubbles in the water-based laminating adhesive can be punctured and eliminated, avoiding the influence of a large number of bubbles in the water-based laminating adhesive on the bonding strength of the water-based laminating adhesive.

[0028] 2: When the top of the iron wire collides with the bump at the bottom of the filter disc in the present invention, it can clean and dredge the filter holes of the filter disc to a certain extent, thereby avoiding the difficulty of the water-based film laminating adhesive passing through the filter holes of the filter disc due to its own tension when passing through the filter holes of the filter disc. Moreover, it can clean the impurities filtered in the filter holes of the filter disc to prevent the impurities filtered by the filter disc from blocking the filter disc, enabling the device to have the function of automatically dredging the filter disc.

[0029] 3: In the present invention, by the electric slider sliding up and down on the guide rail, the filter disc can be moved up and down in the tank. When too much water-based film laminating adhesive is poured onto the filter disc, the filter disc can move up quickly to quickly extrude the water-based film laminating adhesive between the filter disc and the top wall of the tank, thereby accelerating the efficiency of the water-based film laminating adhesive passing through the filter disc. Using the centrifugal force generated by the rotation of the filter disc, the impurities filtered on the filter disc can be thrown to the edge of the filter disc. And as the impurities on the filter disc rotate, when the impurities on the filter disc move to the conveying port, the impurities can fall into the collection box through the conveying port under the action of the centrifugal force, automatically completing the cleaning step of the impurities filtered on the filter disc, enabling the device to have the function of automatically cleaning the filtered impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is an axonometric view of a preparation device for water-based film laminating adhesive proposed by the present invention;

[0031] Figure 2 is an axonometric view of a preparation device for water-based film laminating adhesive proposed by the present invention;

[0032] Figure 3 is Figure 2 a partial enlarged view of part A in

[0033] Figure 4 is an axonometric view of a preparation device for water-based film laminating adhesive proposed by the present invention;

[0034] Figure 5 is an axonometric view of a preparation device for water-based film laminating adhesive proposed by the present invention;

[0035] Figure 6 is a schematic structural view of the tank body of a preparation device for water-based film laminating adhesive proposed by the present invention;

[0036] Figure 7 is a sectional view of the tank body of a preparation device for water-based film laminating adhesive proposed by the present invention.

[0037] In the figure: 1, tank body; 2, fixing plate; 3, motor; 4, gear; 5, rotating ring; 6, wire; 7, fixing block; 8, strip plate; 9, guide rail; 10, toothed ring; 11, collection box; 12, storage box; 13, feeding port; 14, support column; 15, chassis; 16, receiving box; 17, electric slider; 18, first magnetic attraction block; 19, wear-resistant plate; 20, annular chute; 21, filter disc; 22, second magnetic attraction block; 23, conveying port; 24, electronic valve. Detailed implementation manner

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0039] A preparation method of water-based laminating adhesive includes the following steps:

[0040] S1: Take the following raw materials of water-based laminating adhesive by weight parts:

[0041] 1-5 parts of hydroxyethyl acrylate, 18-29 parts of butyl acrylate, 0.5-1.2 parts of emulsifier, 5-8 parts of styrene, 0.2-0.4 parts of initiator, 1-7 parts of tackifying resin, 20-35 parts of deionized water;

[0042] S2: Pour deionized water into the emulsifying bucket, add hydroxyethyl acrylate to the emulsifying bucket and stir evenly to obtain solution A;

[0043] S3: Add butyl acrylate to solution A in S2 and stir for 15-20 min to obtain solution B;

[0044] S4: Add styrene and tackifying resin to solution B in S3 at the same time and stir evenly to obtain solution C;

[0045] S5: Add the emulsifier to solution C in S4, stir evenly and then start emulsifying for 1.2-2.5 hours to obtain emulsion A;

[0046] S6: Take 2 / 3 of the initiator and add it to the emulsion in S5 to obtain emulsion B;

[0047] S7: Pour emulsion B in S6 into the reaction kettle for reaction, so that emulsion B is heated and stirred in the reaction kettle, and the reaction stops after 1.5-2 hours of reaction of emulsion B in the reaction kettle;

[0048] S8: Add the remaining 1 / 3 initiator dropwise to the reactor in S7, and control the dropping time of the remaining 1 / 3 initiator within 2 - 3.5 hours. Then raise the temperature of the reactor to 80 - 90 °C and keep it warm for 1.5 hours. Finally, cool the emulsion B in the reactor to below 40 °C, carry out an elimination reaction on the emulsion B, and control the pH value of the obtained emulsion B within 6.8 - 7.2 to obtain the water-based laminating adhesive.

[0049] S9: Pour the water-based laminating adhesive obtained in S8 into the preparation device for defoaming treatment, and use the preparation device to filter the obtained water-based laminating adhesive to finally obtain the finished water-based laminating adhesive.

[0050] As a technical optimization scheme of the present invention, the stirring speed of the reactor in S7 is controlled within 800 - 1000 rmp.

[0051] Refer to Figure 1-7 As shown in [reference], a preparation device for a water-based laminating adhesive in the present invention includes a tank body 1. Two rotating rings 5 are rotatably sleeved on the outer wall of the tank body 1. The two rotating rings 5 are arranged up and down. Two fixing blocks 7 are fixed on the outer wall of the rotating ring 5. A strip plate 8 is fixed at the end of the fixing block 7. A guide rail 9 is installed on the side of the strip plate 8 close to the tank body 1. An electric slider 17 is slidably installed on the guide rail 9. A first magnetic attraction block 18 is installed on the side of the electric slider 17 close to the tank body 1. A filter disk 21 is slidably installed in the tank body 1. A second magnetic attraction block 22 that magnetically attracts the first magnetic attraction block 18 is arranged on the outer wall of the filter disk 21. When the first magnetic attraction block 18 and the second magnetic attraction block 22 are magnetically attracted, the filter disk 21 is in a static state in the tank body 1. A rotating mechanism for rotating the filter disk 21 is arranged on the outer wall of the tank body 1, and a puncturing mechanism for puncturing the bubbles in the water-based laminating adhesive is arranged in the tank body 1.

[0052] As a technical optimization scheme of the present invention, the rotating mechanism includes a fixing plate 2 fixed on the outer wall of the tank body 1. A motor 3 is installed at the bottom of the fixing plate 2. The output shaft of the motor 3 is connected to a gear 4. A toothed ring 10 is installed on the side of the strip plate 8 far from the tank body 1. The toothed ring 10 meshes with the gear 4. The tank body 1 is located inside the inner ring of the toothed ring 10. By the combined use of the motor, the gear 4 and the toothed ring 10, it is convenient to make the motor 3 drive the toothed ring 10 to rotate, and finally make the filter disk 21 in the tank body 1 rotate.

[0053] As a technical optimization solution of the present invention, the puncturing mechanism includes a material receiving box 16 installed at the bottom of the tank body 1. A plurality of elastic iron wires 6 are installed on the inner bottom wall of the material receiving box 16. The iron wires 6 are in a vertical state in the natural state. The top ends of the iron wires 6 penetrate through the material receiving box 16 and the tank body 1 and extend into the tank body 1. The top ends of the iron wires 6 are located below the filter disc 21. A plurality of protrusions are provided at the bottom of the filter disc 21. When the filter disc 21 rotates, the bumps at the bottom are driven to rotate and frequently collide with the iron wires 6, which can cause the iron wires 6 to vibrate. During the vibration process of the iron wires 6, the barbs on the outer wall of the iron wires 6 are driven to vibrate to puncture the bubbles in the water-based laminating adhesive, so as to puncture and eliminate the bubbles in the water-based laminating adhesive, and avoid the influence of a large number of bubbles in the water-based laminating adhesive on the bonding strength of the water-based laminating adhesive.

[0054] As a technical optimization solution of the present invention, a plurality of barbs are provided on the outer wall of the iron wire 6. A through hole communicating with each other is provided on the contact surface between the tank body 1 and the material receiving box 16, and the iron wire 6 is located in the through hole.

[0055] As a technical optimization solution of the present invention, a delivery port 23 is obliquely opened downward on the outer wall of the tank body 1. A collection box 11 connected to the delivery port 23 is installed on the outer wall of the tank body 1. An electronic valve 24 is installed in the delivery port 23. The collection box 11 is located inside the inner ring of the gear ring 10 and below the top end of the iron wire 6.

[0056] As a technical optimization solution of the present invention, the tank body 1 is communicated with a storage box 12. The storage box 12 is communicated with the tank body 1 through a connecting pipe. The communication port of the connecting pipe with the tank body 1 is located below the filter disc 21, and a water pump is installed in the connecting pipe. The storage box 12 is located inside the inner ring of the gear ring 10. The storage box 12 is loaded with an antifoaming agent and is located below the top end of the iron wire 6. The antifoaming agent in the storage box 12 is pumped into the water-based laminating adhesive in the tank body 1 through the water pump in the connecting pipe. When the iron wire 6 vibrates, the antifoaming agent can be vibrated to a certain extent to better blend with the water-based laminating adhesive, and the antifoaming agent is used to eliminate the bubbles in the water-based laminating adhesive, further reducing the bubbles contained in the water-based laminating adhesive and reducing the influence of the bubbles in the water-based laminating adhesive on the bonding strength of the water-based laminating adhesive.

[0057] As a technical optimization solution of the present invention, an annular sliding groove 20 is opened on the outer wall of the tank body 1. The rotating ring 5 is slidably installed in the annular sliding groove 20. A wear-resistant plate 19 is installed on the side of the first magnetic attraction block 18 close to the tank body 1. The side of the wear-resistant plate 19 close to the tank body 1 is in contact with the outer wall of the tank body 1. An inlet 13 communicating with the tank body 1 is provided at the top of the tank body 1. An outlet is provided on the side of the material receiving box 16. The wear-resistant plate 19 can prevent the first magnetic attraction block 18 from being excessively worn and damaged due to frequent friction with the outer wall of the tank body 1, and improve the protection of the first magnetic attraction block 18.

[0058] As a technical optimization solution of the present invention, two groups of support columns 14 are symmetrically installed at the bottom of the tank body 1. The bottom ends of the support columns 14 are connected to a chassis 15. The material receiving box 16 is located between the tank body 1 and the chassis 15. By the combined use of the support columns 14 and the chassis 15, the tank body 1 can be supported.

[0059] When the present invention is in use, the following raw materials of the water-based laminating adhesive are taken by weight:

[0060] 1-5 parts of hydroxyethyl acrylate, 18-29 parts of butyl acrylate, 0.5-1.2 parts of emulsifier, 5-8 parts of styrene, 0.2-0.4 parts of initiator, 1-7 parts of tackifying resin, 20-35 parts of deionized water; pour the deionized water into an emulsifying barrel, add hydroxyethyl acrylate to the emulsifying barrel and stir evenly to obtain solution A; add butyl acrylate to solution A in S2 and stir for 15-20 min to obtain solution B; add styrene and tackifying resin to solution B in S3 at the same time and stir evenly to obtain solution C; add the emulsifier to solution C in S4, stir evenly and then start emulsification. Emulsify for 1.2-2.5 hours to obtain emulsion A; take 2 / 3 of the initiator and add it to the emulsion in S5 to obtain emulsion B; pour emulsion B in S6 into a reaction kettle for reaction, so that emulsion B is heated and stirred in the reaction kettle. Stop after emulsion B reacts in the reaction kettle for 1.5-2 hours; drop the remaining 1 / 3 of the initiator into the reaction kettle in S7, and control the dropping time of the remaining 1 / 3 of the initiator to be 2-3.5 hours, and raise the temperature of the reaction kettle to 80-90 °C and keep it warm for 1.5 hours. Finally, cool the emulsion B in the reaction kettle to below 40 °C, carry out an elimination reaction on emulsion B, and control the pH value of the obtained emulsion B to be 6.8-7.2 to obtain a water-based laminating adhesive; pour the water-based laminating adhesive obtained in S8 into a preparation device for defoaming treatment, and use the preparation device to filter the obtained water-based laminating adhesive to finally obtain a finished water-based laminating adhesive.

[0061] When pouring the water-based laminating adhesive obtained in S8 into the preparation device, the water-based laminating adhesive drips onto the filter disc 21 in the tank body 1. The filter disc 21 is used to filter the water-based laminating adhesive, and the impurities in the water-based laminating adhesive can be filtered on the filter disc 21, avoiding a large amount of impurities in the water-based laminating adhesive from affecting the quality of the water-based laminating adhesive.

[0062] Meanwhile, start the motor 3. The output shaft of the motor 3 drives the gear 4 to rotate. The rotation of the gear 4 drives the toothed ring 10 to rotate. The rotation of the toothed ring 10 drives the strip plate 8, the guide rail 9, and the electric slider 17 to rotate around the tank body 1. The rotation of the electric slider 17 around the tank body 1 drives the first magnetic attraction block 18 to rotate around the tank body 1. Due to the mutual adsorption between the first magnetic attraction block 18 and the second magnetic attraction block 22, when the first magnetic attraction block 18 rotates, the second magnetic attraction block 22 can be driven to rotate in the tank body 1 through the mutual adsorption and traction between the first magnetic attraction block 18 and the second magnetic attraction block 22. Furthermore, the second magnetic attraction block 22 drives the filter disc 21 to rotate in the tank body 1, enabling the filter disc 21 to rotate in the tank body 1. Then, start the electric slider 17. The electric slider 17 moves downward on the guide rail 9. Then, through the mutual adsorption between the first magnetic attraction block 18 and the second magnetic attraction block 22, the filter disc 21 is driven to slide downward in the tank body 1 until the convex block at the bottom of the filter disc 21 contacts the iron wire 6. When the filter disc 21 rotates, the convex block at the bottom drives the filter disc 21 to rotate and frequently collides with the iron wire 6, causing the iron wire 6 to vibrate. During the vibration process of the iron wire 6, the barbs on the outer wall of the iron wire 6 are driven to vibrate to puncture the bubbles in the water-based laminating adhesive, and the bubbles in the water-based laminating adhesive can be punctured and eliminated, avoiding the influence of a large number of bubbles in the water-based laminating adhesive on the bonding strength of the water-based laminating adhesive.

[0063] When the top of the iron wire 6 collides with the convex block at the bottom of the filter disc 21, the filter holes of the filter disc 21 can be cleaned and dredged to a certain extent, thereby avoiding the situation that the water-based laminating adhesive is difficult to pass through the filter holes of the filter disc 21 due to its own tension when passing through the filter holes of the filter disc 21. And the impurities filtered in the filter holes of the filter disc 21 can be cleaned, preventing the impurities filtered by the filter disc 21 from blocking the filter disc 21, enabling the device to have the function of automatically dredging the filter disc 21.

[0064] Moreover, through the water pump in the connecting pipe, the defoamer in the storage tank 12 is pumped to add to the water-based laminating adhesive in the tank body 1. When the iron wire 6 vibrates, the defoamer can be vibrated to a certain extent to better blend with the water-based laminating adhesive, and the defoamer is used to eliminate the bubbles in the water-based laminating adhesive, further reducing the bubbles contained in the water-based laminating adhesive and reducing the influence of the bubbles in the water-based laminating adhesive on the bonding strength of the water-based laminating adhesive.

[0065] And by the up-and-down sliding of the electric slider 17 on the guide rail 9, the filter disc 21 can be moved up and down in the tank body 1. When too much water-based laminating adhesive is poured on the filter disc 21, the filter disc 21 can be quickly lifted to quickly extrude the water-based laminating adhesive between the filter disc 21 and the inner top wall of the tank body 1, thereby accelerating the efficiency of the water-based laminating adhesive passing through the filter disc 21. It can be adjusted independently according to the specific usage situation, or the water-based laminating adhesive can freely filter and drip on the filter disc 21 according to the gravity of the water-based laminating adhesive itself.

[0066] When too many impurities in the water-based laminating adhesive are filtered by the filter disc 21, two electric sliders 17 are started simultaneously, so that the filter disc 21 moves up and down in the tank body 1 to adjust the position of the filter disc 21 in the tank body 1 until the top of the filter disc 21 is flush with the conveying port 23 and then stops. The electronic valve 24 in the conveying port 23 is opened, and the motor 3 is started to make the filter disc 21 rotate in the tank body 1. By using the centrifugal force generated by the rotation of the filter disc 21, the impurities filtered on the filter disc 21 can be thrown to the edge of the filter disc 21. And as the impurities on the filter disc 21 rotate, when the impurities on the filter disc 21 move to the conveying port 23, the impurities can fall into the collection box 11 through the conveying port 23 under the action of centrifugal force, and the cleaning step of the impurities filtered on the filter disc 21 can be automatically completed, so that the device has the function of automatically cleaning the filtered impurities.

[0067] Moreover, the water-based laminating adhesive filtered by the filter disc 21 drips onto the inner bottom wall of the tank body 1, and the filtered water-based laminating adhesive flows downward along the iron wire 6 through the through holes, so that the filtered water-based laminating adhesive flows into the material receiving box 16 along the iron wire 6. By adopting the method of transporting the water-based laminating adhesive flowing downward along the iron wire 6, the water-based laminating adhesive can be transported into the material receiving box 16 and wait for discharging. And as the water-based laminating adhesive flows along the iron wire 6, no collision occurs during the transportation process, so as to avoid the generation of bubbles again due to collision of the water-based laminating adhesive, and the water-based laminating adhesive can flow into the material receiving box 16 under its own gravity.

[0068] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent replacements or changes, should be covered by the protection scope of the present invention.

Claims

1. A preparation device for water-based laminating adhesive, which is applied to a preparation method of water-based laminating adhesive, and is characterized in that The preparation method includes the following steps: S1: Take the raw materials of water-based laminating adhesive in the following parts by weight: 1-5 parts of hydroxyethyl acrylate, 18-29 parts of butyl acrylate, 0.5-1.2 parts of emulsifier, 5-8 parts of styrene, 0.2-0.4 parts of initiator, 1-7 parts of tackifying resin, 20-35 parts of deionized water; S2: Pour deionized water into the emulsifying bucket, add hydroxyethyl acrylate to the emulsifying bucket and stir evenly to obtain solution A; S3: Add butyl acrylate to solution A in S2 and stir for 15-20 min to obtain solution B; S4: Add styrene and tackifying resin to solution B in S3 at the same time and stir evenly to obtain solution C; S5: Add the emulsifier to solution C in S4, stir evenly and then start emulsification for 1.2-2.5 hours to obtain emulsion A; S6: Take 2 / 3 of the initiator and add it to the emulsion in S5 to obtain emulsion B; S7: Pour emulsion B in S6 into the reaction kettle for reaction, so that emulsion B is heated and stirred in the reaction kettle, and the reaction in the reaction kettle stops after 1.5-2 hours; S8: Drop the remaining 1 / 3 of the initiator into the reaction kettle in S7, and control the dropping time of the remaining 1 / 3 of the initiator to be 2-3.5 hours, and raise the temperature of the reaction kettle to 80-90 °C for heat preservation for 1.5 hours. Finally, cool the emulsion B in the reaction kettle to below 40 °C, carry out an elimination reaction on emulsion B, and control the pH value of the obtained emulsion B to be 6.8-7.2 to obtain water-based laminating adhesive; S9: Pour the water-based laminating adhesive obtained in S8 into the preparation device for defoaming treatment, and use the preparation device to filter the obtained water-based laminating adhesive to finally obtain the finished water-based laminating adhesive; The stirring speed of the reaction kettle in S7 is controlled at 800-1000 rmp; The preparation device includes a tank body (1), two rotating rings (5) are rotatably sleeved on the outer wall of the tank body (1), the two rotating rings (5) are arranged up and down, two fixing blocks (7) are fixed on the outer wall of the rotating ring (5), a strip plate (8) is fixed at the end of the fixing block (7), a guide rail (9) is installed on the side of the strip plate (8) close to the tank body (1), an electric slider (17) is slidably installed on the guide rail (9), a first magnetic attraction block (18) is installed on the side of the electric slider (17) close to the tank body (1), a filter disc (21) is slidably installed in the tank body (1), and a second magnetic attraction block (22) that mutually attracts with the first magnetic attraction block (18) is arranged on the outer wall of the filter disc (21). When the first magnetic attraction block (18) and the second magnetic attraction block (22) are attracted, the filter disc (21) is in a static state in the tank body (1). A rotating mechanism for rotating the filter disc (21) is arranged on the outer wall of the tank body (1), and a puncturing mechanism for puncturing the bubbles in the water-based laminating adhesive is arranged in the tank body (1); The puncturing mechanism includes a material receiving box (16) installed at the bottom of the tank body (1). A number of elastic iron wires (6) are installed on the inner bottom wall of the material receiving box (16). The iron wires (6) are in a vertical state in the natural state. The top ends of the iron wires (6) penetrate through the material receiving box (16) and the tank body (1) and extend into the tank body (1). The top ends of the iron wires (6) are located below the filter disc (21). A number of protrusions are provided at the bottom of the filter disc (21).

2. The preparation device of an aqueous laminating adhesive according to claim 1, characterized in that, The rotating mechanism includes a fixing plate (2) fixed to the outer wall of the tank body (1). A motor (3) is installed at the bottom of the fixing plate (2). The output shaft of the motor (3) is connected with a gear (4). A toothed ring (10) is installed on the side of the strip plate (8) away from the tank body (1). The toothed ring (10) meshes with the gear (4). The tank body (1) is located inside the inner ring of the toothed ring (10).

3. The preparation device of an aqueous laminating adhesive according to claim 1, characterized in that, A number of barbs are provided on the outer wall of the iron wire (6). A through hole communicating with each other is provided at the contact surface between the tank body (1) and the material receiving box (16). The iron wire (6) is located inside the through hole.

4. The preparation device of an aqueous laminating adhesive according to claim 3, wherein, A delivery port (23) is obliquely opened downward on the outer wall of the tank body (1). A collection box (11) communicating with the delivery port (23) is installed on the outer wall of the tank body (1). An electronic valve (24) is installed inside the delivery port (23). The collection box (11) is located inside the inner ring of the toothed ring (10). The collection box (11) is located below the top end of the iron wire (6).

5. The preparation device of an aqueous laminating adhesive according to claim 4, characterized in that, The tank body (1) is communicated with a storage box (12). The storage box (12) is communicated with the tank body (1) through a connecting pipe. The communication port of the connecting pipe and the tank body (1) is located below the filter disc (21). And a water pump is installed inside the connecting pipe. The storage box (12) is located inside the inner ring of the toothed ring (10). The storage box (12) is loaded with an antifoaming agent. The storage box (12) is located below the top end of the iron wire (6).

6. The preparation device of an aqueous film laminating adhesive according to claim 4, characterized in that, An annular sliding groove (20) is provided on the outer wall of the tank body (1). A rotating ring (5) is slidably installed inside the annular sliding groove (20). A wear-resistant plate (19) is installed on the side of the first magnetic attraction block (18) close to the tank body (1). The side of the wear-resistant plate (19) close to the tank body (1) is in contact with the outer wall of the tank body (1). An inlet (13) communicating with the tank body (1) is provided at the top end of the tank body (1). An outlet is provided on the side of the material receiving box (16).

7. The preparation device of an aqueous film laminating adhesive according to claim 4, characterized in that, Two groups of support columns (14) are symmetrically installed at the bottom of the tank body (1). The bottom ends of the support columns (14) are connected with a chassis (15). The material receiving box (16) is located between the tank body (1) and the chassis (15).

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